/ocr/ocrservice/jni/hydrogen/include/leptonica/dewarp.h
http://eyes-free.googlecode.com/ · C Header · 55 lines · 21 code · 6 blank · 28 comment · 0 complexity · 57151c9ef0aa73e643aad92f7beea132 MD5 · raw file
- /*====================================================================*
- - Copyright (C) 2001 Leptonica. All rights reserved.
- - This software is distributed in the hope that it will be
- - useful, but with NO WARRANTY OF ANY KIND.
- - No author or distributor accepts responsibility to anyone for the
- - consequences of using this software, or for whether it serves any
- - particular purpose or works at all, unless he or she says so in
- - writing. Everyone is granted permission to copy, modify and
- - redistribute this source code, for commercial or non-commercial
- - purposes, with the following restrictions: (1) the origin of this
- - source code must not be misrepresented; (2) modified versions must
- - be plainly marked as such; and (3) this notice may not be removed
- - or altered from any source or modified source distribution.
- *====================================================================*/
- #ifndef LEPTONICA_DEWARP_H
- #define LEPTONICA_DEWARP_H
- /*
- * dewarp.h
- *
- * Data structure to hold arrays and results for generating
- * a vertical disparity array based on textlines. The disparity
- * array is two-dimensional, and it represents a vertical
- * displacement, relative to the flat point in the textlines.
- * After dewarping, all points on the altered curve will have
- * a y-value equal to the flat point.
- *
- * The sampled vertical disparity array is expanded to full resolution,
- * using linear interpolation, from which it is trivially applied
- * to the input image.
- */
- struct L_Dewarp
- {
- struct Pix *pixs; /* source pix, 1 bpp */
- struct Pix *pixd; /* dewarped pix; 1, 8 or 32 bpp */
- struct FPix *sampvdispar; /* sampled vertical disparity array */
- struct FPix *fullvdispar; /* full vertical disparity array */
- struct FPix *fullhdispar; /* full horiztontal disparity array */
- struct Numa *naflats; /* sorted flat location of each line */
- struct Numa *nacurves; /* sorted curvature of each line */
- l_int32 sampling; /* sampling factor of disparity array */
- l_int32 minlines; /* min number of long lines required */
- l_int32 applyhoriz; /* flag for estimating horiz. disparity */
- l_int32 nx; /* number of sampling pts in x direction */
- l_int32 ny; /* number of sampling pts in y direction */
- l_int32 extraw; /* extra width required for hor. disparity */
- l_int32 success; /* sets to 1 if model build succeeds */
- };
- typedef struct L_Dewarp L_DEWARP;
- #endif /* LEPTONICA_DEWARP_H */