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git-svn-id: https://tesseract-ocr.googlecode.com/svn/trunk@132 d0cd1f9f-072b-0410-8dd7-cf729c803f20
91 lines
3.9 KiB
C++
91 lines
3.9 KiB
C++
///////////////////////////////////////////////////////////////////////
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// File: leptonica_pageseg.h
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// Description: Leptonica-based page segmenter.
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// Author: Dan Bloomberg
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// Created: Tue Aug 28 08:56:44 PDT 2007
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//
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// (C) Copyright 2007, Google Inc.
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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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#ifndef LEPTONICA_PAGESEG_H
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#define LEPTONICA_PAGESEG_H
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class Boxa;
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class Pix;
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class Pixa;
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class LeptonicaPageSeg {
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public:
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// GetHalftoneMask()
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// Input: pixs (input image, assumed to be at 300 - 400 ppi)
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// &pixht (returns halftone mask; can be NULL)
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// &baht (returns boxa of halftone mask component b.b.s; can be NULL)
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// &paht (returns pixa of halftone mask components; can be NULL)
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// debugflag (set true to write out intermediate images)
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// Return: true if ok, false on error
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// Note: If there are no halftone regions, all requested data structures
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// are returned as NULL. This is not an error.
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static bool GetHalftoneMask(Pix *pixs,
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Pix **ppixht,
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Boxa **pbaht,
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Pixa **ppaht,
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bool debugflag);
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// GetTextlineMask()
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// Input: pixs (input image, assumed to be at 300 - 400 ppi)
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// &pixtm (returns textline mask; can be NULL)
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// &pixvws (returns vertical whitespace mask; can be NULL)
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// &batm (returns boxa of textline mask component b.b.s; can be NULL)
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// &patm (returns pixa of textline mask components; can be NULL)
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// debugflag (set true to write out intermediate images)
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// Return: true if ok, false on error
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static bool GetTextlineMask(Pix *pixs,
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Pix **ppixtm,
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Pix **ppixvws,
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Boxa **pbatm,
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Pixa **ppatm,
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bool debugflag);
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// GetTextblockMask()
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// Input: pixs (input image, assumed to be at 300 - 400 ppi)
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// &pixtb (returns textblock mask; can be NULL)
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// &batb (returns boxa of textblock mask component b.b; can be NULL)
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// &patb (returns pixa of textblock mask components; can be NULL)
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// debugflag (set true to write out intermediate images)
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// Return: true if ok, false on error
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// Notes:
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// To obtain a set of polylines of the outer borders of each of the
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// textblock regions, use pixGetOuterBordersPtaa().
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static bool GetTextblockMask(Pix *pixs,
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Pix **ppixtb,
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Boxa **pbatb,
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Pixa **ppatb,
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bool debugflag);
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// GetAllRegions()
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// Input: pixs (input image, assumed to be at 300 - 400 ppi)
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// &pixhm (returns halftone mask; can be NULL)
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// &pixtm (returns textline mask; can be NULL)
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// &pixtb (returns textblock mask; can be NULL)
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// debugflag (set true to write out intermediate images and data)
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// Return: true if ok, false on error
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// Note: use NULL for input on each mask you don't want.
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static bool GetAllRegions(Pix *pixs,
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Pix **ppixhm,
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Pix **ppixtm,
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Pix **ppixtb,
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bool debugflag);
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};
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#endif // LEPTONICA_PAGESEG_H
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