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https://github.com/tesseract-ocr/tesseract.git
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58 lines
2.9 KiB
C
58 lines
2.9 KiB
C
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/*====================================================================*
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- Copyright (C) 2001 Leptonica. All rights reserved.
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- This software is distributed in the hope that it will be
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- useful, but with NO WARRANTY OF ANY KIND.
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- No author or distributor accepts responsibility to anyone for the
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- consequences of using this software, or for whether it serves any
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- particular purpose or works at all, unless he or she says so in
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- writing. Everyone is granted permission to copy, modify and
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- redistribute this source code, for commercial or non-commercial
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- purposes, with the following restrictions: (1) the origin of this
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- source code must not be misrepresented; (2) modified versions must
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- be plainly marked as such; and (3) this notice may not be removed
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- or altered from any source or modified source distribution.
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*====================================================================*/
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#ifndef LEPTONICA_DEWARP_H
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#define LEPTONICA_DEWARP_H
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/*
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* dewarp.h
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*
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* Data structure to hold arrays and results for generating
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* a vertical disparity array based on textlines. The disparity
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* array is two-dimensional, and it represents a vertical
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* displacement, relative to the flat point in the textlines.
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* After dewarping, all points on the altered curve will have
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* a y-value equal to the flat point.
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*
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* The sampled vertical disparity array is expanded to full resolution,
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* using linear interpolation, from which it is trivially applied
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* to the input image.
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*/
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#define DEWARP_VERSION_NUMBER 1
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struct L_Dewarp
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{
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struct Pix *pixs; /* source pix, 1 bpp */
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struct Pix *pixd; /* dewarped pix; 1, 8 or 32 bpp */
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struct FPix *sampvdispar; /* sampled vertical disparity array */
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struct FPix *samphdispar; /* sampled horizontal disparity array */
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struct FPix *fullvdispar; /* full vertical disparity array */
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struct FPix *fullhdispar; /* full horiztontal disparity array */
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struct Numa *naflats; /* sorted flat location of each line */
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struct Numa *nacurves; /* sorted curvature of each line */
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l_int32 pageno; /* page number; important for reuse */
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l_int32 sampling; /* sampling factor of disparity array */
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l_int32 minlines; /* min number of long lines required */
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l_int32 applyhoriz; /* flag for estimating horiz. disparity */
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l_int32 nx; /* number of sampling pts in x direction */
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l_int32 ny; /* number of sampling pts in y direction */
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l_int32 extraw; /* extra width required for hor. disparity */
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l_int32 success; /* sets to 1 if model build succeeds */
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};
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typedef struct L_Dewarp L_DEWARP;
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#endif /* LEPTONICA_DEWARP_H */
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