2007-03-08 04:03:40 +08:00
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/* -*-C-*-
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********************************************************************************
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*
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* File: protos.c (Formerly protos.c)
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* Description:
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* Author: Mark Seaman, OCR Technology
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* Created: Fri Oct 16 14:37:00 1987
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* Modified: Mon Mar 4 14:51:24 1991 (Dan Johnson) danj@hpgrlj
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* Language: C
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* Package: N/A
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* Status: Reusable Software Component
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*
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* (c) Copyright 1987, Hewlett-Packard Company.
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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** http://www.apache.org/licenses/LICENSE-2.0
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*
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*********************************************************************************/
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/*----------------------------------------------------------------------
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I n c l u d e s
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----------------------------------------------------------------------*/
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#include "protos.h"
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#include "const.h"
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#include "emalloc.h"
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#include "freelist.h"
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#include "callcpp.h"
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2008-02-01 08:21:49 +08:00
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#include "tprintf.h"
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2007-03-08 04:03:40 +08:00
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#include "adaptmatch.h"
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#include "scanutils.h"
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2007-07-18 09:15:07 +08:00
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#include "globals.h"
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2009-07-11 10:17:36 +08:00
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#include "classify.h"
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#include "varable.h"
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2007-03-08 04:03:40 +08:00
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#include <stdio.h>
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#include <math.h>
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#define PROTO_INCREMENT 32
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#define CONFIG_INCREMENT 16
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/*----------------------------------------------------------------------
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V a r i a b l e s
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----------------------------------------------------------------------*/
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CLASS_STRUCT TrainingData[NUMBER_OF_CLASSES];
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2009-07-11 10:17:36 +08:00
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STRING_VAR(classify_training_file, "MicroFeatures", "Training file");
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2007-03-08 04:03:40 +08:00
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/*----------------------------------------------------------------------
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F u n c t i o n s
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----------------------------------------------------------------------*/
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2010-07-27 21:23:23 +08:00
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/**
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* @name AddConfigToClass
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2007-03-08 04:03:40 +08:00
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*
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* Add a new config to this class. Malloc new space and copy the
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* old configs if necessary. Return the config id for the new config.
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2010-07-27 21:23:23 +08:00
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*
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* @param Class The class to add to
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*/
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2007-03-08 04:03:40 +08:00
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int AddConfigToClass(CLASS_TYPE Class) {
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int NewNumConfigs;
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int NewConfig;
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int MaxNumProtos;
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BIT_VECTOR Config;
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MaxNumProtos = Class->MaxNumProtos;
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2009-03-11 03:03:06 +08:00
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if (Class->NumConfigs >= Class->MaxNumConfigs) {
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2007-03-08 04:03:40 +08:00
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/* add configs in CONFIG_INCREMENT chunks at a time */
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NewNumConfigs = (((Class->MaxNumConfigs + CONFIG_INCREMENT) /
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CONFIG_INCREMENT) * CONFIG_INCREMENT);
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Class->Configurations =
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(CONFIGS) Erealloc (Class->Configurations,
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sizeof (BIT_VECTOR) * NewNumConfigs);
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Class->MaxNumConfigs = NewNumConfigs;
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}
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2009-07-11 10:17:36 +08:00
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NewConfig = Class->NumConfigs++;
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2007-03-08 04:03:40 +08:00
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Config = NewBitVector (MaxNumProtos);
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2009-03-11 03:03:06 +08:00
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Class->Configurations[NewConfig] = Config;
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2007-03-08 04:03:40 +08:00
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zero_all_bits (Config, WordsInVectorOfSize (MaxNumProtos));
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return (NewConfig);
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}
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2010-07-27 21:23:23 +08:00
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/**
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* @name AddProtoToClass
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2007-03-08 04:03:40 +08:00
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*
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* Add a new proto to this class. Malloc new space and copy the
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* old protos if necessary. Return the proto id for the new proto.
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2010-07-27 21:23:23 +08:00
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*
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* @param Class The class to add to
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*/
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2007-03-08 04:03:40 +08:00
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int AddProtoToClass(CLASS_TYPE Class) {
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int i;
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int Bit;
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int NewNumProtos;
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int NewProto;
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BIT_VECTOR Config;
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2009-03-11 03:03:06 +08:00
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if (Class->NumProtos >= Class->MaxNumProtos) {
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2007-03-08 04:03:40 +08:00
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/* add protos in PROTO_INCREMENT chunks at a time */
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NewNumProtos = (((Class->MaxNumProtos + PROTO_INCREMENT) /
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PROTO_INCREMENT) * PROTO_INCREMENT);
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Class->Prototypes = (PROTO) Erealloc (Class->Prototypes,
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sizeof (PROTO_STRUCT) *
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NewNumProtos);
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Class->MaxNumProtos = NewNumProtos;
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2009-03-11 03:03:06 +08:00
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for (i = 0; i < Class->NumConfigs; i++) {
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Config = Class->Configurations[i];
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Class->Configurations[i] = ExpandBitVector (Config, NewNumProtos);
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2007-03-08 04:03:40 +08:00
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2009-03-11 03:03:06 +08:00
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for (Bit = Class->NumProtos; Bit < NewNumProtos; Bit++)
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2007-03-08 04:03:40 +08:00
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reset_bit(Config, Bit);
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}
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}
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2009-03-11 03:03:06 +08:00
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NewProto = Class->NumProtos++;
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if (Class->NumProtos > MAX_NUM_PROTOS) {
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2008-02-01 08:21:49 +08:00
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tprintf("Ouch! number of protos = %d, vs max of %d!",
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2009-03-11 03:03:06 +08:00
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Class->NumProtos, MAX_NUM_PROTOS);
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2008-02-01 08:21:49 +08:00
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}
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2007-03-08 04:03:40 +08:00
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return (NewProto);
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}
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2010-07-27 21:23:23 +08:00
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/**
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* @name ClassConfigLength
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2007-03-08 04:03:40 +08:00
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*
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* Return the length of all the protos in this class.
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2010-07-27 21:23:23 +08:00
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*
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* @param Class The class to add to
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* @param Config FIXME
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*/
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2007-03-08 04:03:40 +08:00
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FLOAT32 ClassConfigLength(CLASS_TYPE Class, BIT_VECTOR Config) {
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2008-04-22 08:23:04 +08:00
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inT16 Pid;
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2007-03-08 04:03:40 +08:00
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FLOAT32 TotalLength = 0;
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2009-03-11 03:03:06 +08:00
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for (Pid = 0; Pid < Class->NumProtos; Pid++) {
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2007-03-08 04:03:40 +08:00
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if (test_bit (Config, Pid)) {
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2009-03-11 03:03:06 +08:00
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TotalLength += (ProtoIn (Class, Pid))->Length;
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2007-03-08 04:03:40 +08:00
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}
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}
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return (TotalLength);
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}
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2010-07-27 21:23:23 +08:00
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/**
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* @name ClassProtoLength
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2007-03-08 04:03:40 +08:00
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*
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* Return the length of all the protos in this class.
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2010-07-27 21:23:23 +08:00
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*
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* @param Class The class to use
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*/
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2007-03-08 04:03:40 +08:00
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FLOAT32 ClassProtoLength(CLASS_TYPE Class) {
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2008-04-22 08:23:04 +08:00
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inT16 Pid;
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2007-03-08 04:03:40 +08:00
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FLOAT32 TotalLength = 0;
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2009-03-11 03:03:06 +08:00
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for (Pid = 0; Pid < Class->NumProtos; Pid++) {
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TotalLength += (ProtoIn (Class, Pid))->Length;
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2007-03-08 04:03:40 +08:00
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}
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return (TotalLength);
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}
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2010-07-27 21:23:23 +08:00
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/**
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* @name CopyProto
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2007-03-08 04:03:40 +08:00
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*
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* Copy the first proto into the second.
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2010-07-27 21:23:23 +08:00
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*
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* @param Src Source
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* @param Dest Destination
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*/
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2007-03-08 04:03:40 +08:00
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void CopyProto(PROTO Src, PROTO Dest) {
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2009-03-11 03:03:06 +08:00
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Dest->X = Src->X;
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Dest->Y = Src->Y;
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Dest->Length = Src->Length;
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Dest->Angle = Src->Angle;
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Dest->A = Src->A;
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Dest->B = Src->B;
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Dest->C = Src->C;
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2007-03-08 04:03:40 +08:00
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}
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/**********************************************************************
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* FillABC
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*
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* Fill in Protos A, B, C fields based on the X, Y, Angle fields.
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**********************************************************************/
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void FillABC(PROTO Proto) {
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FLOAT32 Slope, Intercept, Normalizer;
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Slope = tan (Proto->Angle * 2.0 * PI);
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Intercept = Proto->Y - Slope * Proto->X;
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Normalizer = 1.0 / sqrt (Slope * Slope + 1.0);
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Proto->A = Slope * Normalizer;
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Proto->B = -Normalizer;
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Proto->C = Intercept * Normalizer;
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}
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/**********************************************************************
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* FreeClass
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*
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* Deallocate the memory consumed by the specified class.
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**********************************************************************/
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void FreeClass(CLASS_TYPE Class) {
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if (Class) {
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FreeClassFields(Class);
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2009-07-11 10:17:36 +08:00
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delete Class;
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2007-03-08 04:03:40 +08:00
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}
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}
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/**********************************************************************
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* FreeClassFields
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*
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* Deallocate the memory consumed by subfields of the specified class.
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**********************************************************************/
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void FreeClassFields(CLASS_TYPE Class) {
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int i;
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if (Class) {
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if (Class->MaxNumProtos > 0)
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memfree (Class->Prototypes);
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if (Class->MaxNumConfigs > 0) {
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2009-03-11 03:03:06 +08:00
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for (i = 0; i < Class->NumConfigs; i++)
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FreeBitVector (Class->Configurations[i]);
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2007-03-08 04:03:40 +08:00
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memfree (Class->Configurations);
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}
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}
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}
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/**********************************************************************
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* NewClass
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*
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* Allocate a new class with enough memory to hold the specified number
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* of prototypes and configurations.
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**********************************************************************/
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CLASS_TYPE NewClass(int NumProtos, int NumConfigs) {
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CLASS_TYPE Class;
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2009-07-11 10:17:36 +08:00
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Class = new CLASS_STRUCT;
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2007-03-08 04:03:40 +08:00
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if (NumProtos > 0)
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Class->Prototypes = (PROTO) Emalloc (NumProtos * sizeof (PROTO_STRUCT));
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if (NumConfigs > 0)
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Class->Configurations = (CONFIGS) Emalloc (NumConfigs *
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sizeof (BIT_VECTOR));
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Class->MaxNumProtos = NumProtos;
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Class->MaxNumConfigs = NumConfigs;
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Class->NumProtos = 0;
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Class->NumConfigs = 0;
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return (Class);
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}
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/**********************************************************************
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* PrintProtos
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*
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* Print the list of prototypes in this class type.
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**********************************************************************/
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void PrintProtos(CLASS_TYPE Class) {
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2008-04-22 08:23:04 +08:00
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inT16 Pid;
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2007-03-08 04:03:40 +08:00
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2009-03-11 03:03:06 +08:00
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for (Pid = 0; Pid < Class->NumProtos; Pid++) {
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2007-03-08 04:03:40 +08:00
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cprintf ("Proto %d:\t", Pid);
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PrintProto (ProtoIn (Class, Pid));
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cprintf ("\t");
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PrintProtoLine (ProtoIn (Class, Pid));
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new_line();
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}
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}
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2010-07-27 21:23:23 +08:00
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namespace tesseract {
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/**
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* @name ReadClassFile
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2007-03-08 04:03:40 +08:00
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*
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* Read in the training data from a file. All of the classes are read
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* in. The results are stored in the global variable, 'TrainingData'.
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2010-07-27 21:23:23 +08:00
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*/
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2009-07-11 10:17:36 +08:00
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void Classify::ReadClassFile() {
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2007-07-18 09:15:07 +08:00
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FILE *File;
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char TextLine[CHARS_PER_LINE];
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char unichar[CHARS_PER_LINE];
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2009-07-11 10:17:36 +08:00
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cprintf ("Reading training data from '%s' ...",
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static_cast<STRING>(classify_training_file).string());
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2007-07-18 09:15:07 +08:00
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fflush(stdout);
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2009-07-11 10:17:36 +08:00
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File = open_file(static_cast<STRING>(classify_training_file).string(), "r");
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2007-07-18 09:15:07 +08:00
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while (fgets (TextLine, CHARS_PER_LINE, File) != NULL) {
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sscanf(TextLine, "%s", unichar);
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ReadClassFromFile (File, unicharset.unichar_to_id(unichar));
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fgets(TextLine, CHARS_PER_LINE, File);
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fgets(TextLine, CHARS_PER_LINE, File);
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}
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fclose(File);
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new_line();
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2007-03-08 04:03:40 +08:00
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}
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2009-07-11 10:17:36 +08:00
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} // namespace tesseract
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2007-03-08 04:03:40 +08:00
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2010-07-27 21:23:23 +08:00
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/**
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2007-03-08 04:03:40 +08:00
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* ReadClassFromFile
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*
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* Read in a class description (protos and configs) from a file. Update
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* the class structure record.
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2010-07-27 21:23:23 +08:00
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*/
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2007-07-18 09:15:07 +08:00
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void ReadClassFromFile(FILE *File, UNICHAR_ID unichar_id) {
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2007-03-08 04:03:40 +08:00
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CLASS_TYPE Class;
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2007-07-18 09:15:07 +08:00
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Class = &TrainingData[unichar_id];
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2007-03-08 04:03:40 +08:00
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ReadProtos(File, Class);
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ReadConfigs(File, Class);
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}
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2010-07-27 21:23:23 +08:00
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/**
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2007-03-08 04:03:40 +08:00
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* ReadConfigs
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*
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* Read the prototype configurations for this class from a file. Read
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* the requested number of lines.
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2010-07-27 21:23:23 +08:00
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*/
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2007-03-08 04:03:40 +08:00
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void ReadConfigs(register FILE *File, CLASS_TYPE Class) {
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2008-04-22 08:23:04 +08:00
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inT16 Cid;
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register inT16 Wid;
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2007-03-08 04:03:40 +08:00
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register BIT_VECTOR ThisConfig;
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int NumWords;
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int NumConfigs;
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fscanf (File, "%d %d\n", &NumConfigs, &NumWords);
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2009-03-11 03:03:06 +08:00
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Class->NumConfigs = NumConfigs;
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2007-03-08 04:03:40 +08:00
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Class->MaxNumConfigs = NumConfigs;
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Class->Configurations =
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(CONFIGS) Emalloc (sizeof (BIT_VECTOR) * NumConfigs);
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2009-03-11 03:03:06 +08:00
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NumWords = WordsInVectorOfSize (Class->NumProtos);
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2007-03-08 04:03:40 +08:00
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for (Cid = 0; Cid < NumConfigs; Cid++) {
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2009-03-11 03:03:06 +08:00
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ThisConfig = NewBitVector (Class->NumProtos);
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2007-03-08 04:03:40 +08:00
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for (Wid = 0; Wid < NumWords; Wid++)
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fscanf (File, "%x", &ThisConfig[Wid]);
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2009-03-11 03:03:06 +08:00
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Class->Configurations[Cid] = ThisConfig;
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2007-03-08 04:03:40 +08:00
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}
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}
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2010-07-27 21:23:23 +08:00
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/**
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2007-03-08 04:03:40 +08:00
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* ReadProtos
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*
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* Read in all the prototype information from a file. Read the number
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* of lines requested.
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2010-07-27 21:23:23 +08:00
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*/
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2007-03-08 04:03:40 +08:00
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void ReadProtos(register FILE *File, CLASS_TYPE Class) {
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2008-04-22 08:23:04 +08:00
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register inT16 Pid;
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2007-03-08 04:03:40 +08:00
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register PROTO Proto;
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int NumProtos;
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fscanf (File, "%d\n", &NumProtos);
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2009-03-11 03:03:06 +08:00
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Class->NumProtos = NumProtos;
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2007-03-08 04:03:40 +08:00
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Class->MaxNumProtos = NumProtos;
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Class->Prototypes = (PROTO) Emalloc (sizeof (PROTO_STRUCT) * NumProtos);
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for (Pid = 0; Pid < NumProtos; Pid++) {
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Proto = ProtoIn (Class, Pid);
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fscanf (File, "%f %f %f %f %f %f %f\n",
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2009-03-11 03:03:06 +08:00
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&Proto->X,
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&Proto->Y,
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&Proto->Length,
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&Proto->Angle,
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&Proto->A,
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&Proto->B, &Proto->C);
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2007-03-08 04:03:40 +08:00
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}
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}
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2010-07-27 21:23:23 +08:00
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/**
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* @name SplitProto
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2007-03-08 04:03:40 +08:00
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*
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* Add a new proto to this class. Malloc new space and copy the
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* old protos if necessary. Return the proto id for the new proto.
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* Update all configurations so that each config which contained the
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* specified old proto will also contain the new proto. The caller
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* is responsible for actually filling in the appropriate proto params.
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2010-07-27 21:23:23 +08:00
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*/
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2007-03-08 04:03:40 +08:00
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int SplitProto(CLASS_TYPE Class, int OldPid) {
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int i;
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int NewPid;
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BIT_VECTOR Config;
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NewPid = AddProtoToClass (Class);
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2009-03-11 03:03:06 +08:00
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for (i = 0; i < Class->NumConfigs; i++) {
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Config = Class->Configurations[i];
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2007-03-08 04:03:40 +08:00
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if (test_bit (Config, OldPid))
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SET_BIT(Config, NewPid);
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}
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return (NewPid);
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}
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2010-07-27 21:23:23 +08:00
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/**
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* @deprecated
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* @nameWriteOldConfigFile
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2007-03-08 04:03:40 +08:00
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*
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* Write the configs in the given class to the specified file in the
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* old config format.
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2010-07-27 21:23:23 +08:00
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*
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* @param File The file to write to
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* @param Class The class to write
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*/
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2007-03-08 04:03:40 +08:00
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void WriteOldConfigFile(FILE *File, CLASS_TYPE Class) {
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int Cid, Pid;
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BIT_VECTOR Config;
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2009-03-11 03:03:06 +08:00
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fprintf (File, "%d %d\n", Class->NumConfigs, Class->NumProtos);
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2007-03-08 04:03:40 +08:00
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2009-03-11 03:03:06 +08:00
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for (Cid = 0; Cid < Class->NumConfigs; Cid++) {
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2007-03-08 04:03:40 +08:00
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fprintf (File, "1 ");
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2009-03-11 03:03:06 +08:00
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Config = Class->Configurations[Cid];
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2007-03-08 04:03:40 +08:00
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2009-03-11 03:03:06 +08:00
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for (Pid = 0; Pid < Class->NumProtos; Pid++) {
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2007-03-08 04:03:40 +08:00
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if (test_bit (Config, Pid))
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fprintf (File, "1");
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else
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fprintf (File, "0");
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}
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fprintf (File, "\n");
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}
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}
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2010-07-27 21:23:23 +08:00
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/**
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* @deprecated
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* @name WriteOldProtoFile
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2007-03-08 04:03:40 +08:00
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*
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* Write the protos in the given class to the specified file in the
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* old proto format.
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2010-07-27 21:23:23 +08:00
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*
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* @param File The file to write to
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* @param Class The class to write
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*/
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2007-03-08 04:03:40 +08:00
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void WriteOldProtoFile(FILE *File, CLASS_TYPE Class) {
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int Pid;
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PROTO Proto;
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/* print old header */
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fprintf (File, "6\n");
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fprintf (File, "linear essential -0.500000 0.500000\n");
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fprintf (File, "linear essential -0.250000 0.750000\n");
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fprintf (File, "linear essential 0.000000 1.000000\n");
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fprintf (File, "circular essential 0.000000 1.000000\n");
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fprintf (File, "linear non-essential -0.500000 0.500000\n");
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fprintf (File, "linear non-essential -0.500000 0.500000\n");
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2009-03-11 03:03:06 +08:00
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for (Pid = 0; Pid < Class->NumProtos; Pid++) {
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2007-03-08 04:03:40 +08:00
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Proto = ProtoIn (Class, Pid);
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fprintf (File, "significant elliptical 1\n");
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fprintf (File, " %9.6f %9.6f %9.6f %9.6f %9.6f %9.6f\n",
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2009-03-11 03:03:06 +08:00
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Proto->X, Proto->Y,
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Proto->Length, Proto->Angle, 0.0, 0.0);
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2007-03-08 04:03:40 +08:00
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fprintf (File, " %9.6f %9.6f %9.6f %9.6f %9.6f %9.6f\n",
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0.0001, 0.0001, 0.0001, 0.0001, 0.0001, 0.0001);
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}
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}
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