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ho_bitmap.h
Langue: en
Version: 172393 (fedora - 06/07/09)
Section: 3 (Bibliothèques de fonctions)
Sommaire
- NAME
- SYNOPSIS
- Detailed Description
- Define Documentation
- #define HO_BITMAP_H 1
- #define ho_bitmap_get(m, x, y) (((((m)->data[(x) / 8 + (y) * (m)->rowstride]) & (0x80 >> ((x) % 8))) > 0)?1:0)
- #define ho_bitmap_set(m, x, y) (((m)->data[(x) / 8 + (y) * (m)->rowstride]) |= (0x80 >> ((x) % 8)))
- #define ho_bitmap_unset(m, x, y) (((m)->data[(x) / 8 + (y) * (m)->rowstride]) &= ~(0x80 >> ((x) % 8)))
- #define ho_bitmap_get_x(m) ((m)->x)
- #define ho_bitmap_get_y(m) ((m)->y)
- #define ho_bitmap_set_x(m, new_x) ((m)->x=(new_x))
- #define ho_bitmap_set_y(m, new_y) ((m)->y=(new_y))
- #define ho_bitmap_get_width(m) ((m)->width)
- #define ho_bitmap_get_height(m) ((m)->height)
- Function Documentation
- ho_bitmap* ho_bitmap_new (const int width, const int height)
- int ho_bitmap_free (ho_bitmap * m)
- ho_bitmap* ho_bitmap_clone (const ho_bitmap * m)
- ho_bitmap* ho_bitmap_clone_window (const ho_bitmap * m, const int x, const int y, const int width, const int height)
- int ho_bitmap_and (ho_bitmap * m_left, const ho_bitmap * m_right)
- int ho_bitmap_or (ho_bitmap * m_left, const ho_bitmap * m_right)
- int ho_bitmap_xor (ho_bitmap * m_left, const ho_bitmap * m_right)
- int ho_bitmap_andnot (ho_bitmap * m_left, const ho_bitmap * m_right)
- int ho_bitmap_copy (ho_bitmap * m_left, const ho_bitmap * m_right)
- ho_bitmap* ho_bitmap_not (const ho_bitmap * m)
- ho_bitmap* ho_bitmap_dilation_n (const ho_bitmap * m, const unsigned char n)
- ho_bitmap* ho_bitmap_erosion_n (const ho_bitmap * m, const unsigned char n)
- ho_bitmap* ho_bitmap_set_height (const ho_bitmap * m, const int height, const int top, const int bottom)
- ho_bitmap* ho_bitmap_set_height_from_bottom (const ho_bitmap * m, const int height, const int top, const int bottom)
- ho_bitmap* ho_bitmap_dilation (const ho_bitmap * m)
- ho_bitmap* ho_bitmap_erosion (const ho_bitmap * m)
- ho_bitmap* ho_bitmap_opening (const ho_bitmap * m)
- ho_bitmap* ho_bitmap_closing (const ho_bitmap * m)
- ho_bitmap* ho_bitmap_hlink (const ho_bitmap * m, const int size)
- ho_bitmap* ho_bitmap_herode (const ho_bitmap * m, const int size)
- ho_bitmap* ho_bitmap_vlink (const ho_bitmap * m, const int size)
- ho_bitmap* ho_bitmap_edge (const ho_bitmap * m, const int n)
- double ho_bitmap_get_fill (const ho_bitmap * m, const int x, const int y, const int width, const int height)
- ho_bitmap* ho_bitmap_filter_hlink (ho_bitmap * m, int size, int max_height)
- ho_bitmap* ho_bitmap_filter_by_size (const ho_bitmap * m, int min_height, int max_height, int min_width, int max_width)
- ho_bitmap* ho_bitmap_filter_boxes (const ho_bitmap * m, const int leeway_down, const int leeway_up)
- ho_bitmap* ho_bitmap_filter_fill (const ho_bitmap * m)
- ho_bitmap* ho_bitmap_filter_set_height (const ho_bitmap * m, const int height, const int top, const int bottom)
- ho_bitmap* ho_bitmap_filter_set_height_from_bottom (const ho_bitmap * m, const int height, const int top, const int bottom)
- ho_bitmap* ho_bitmap_filter_obj_extend_lateraly (const ho_bitmap * m, const int ext_width)
- ho_bitmap* ho_bitmap_filter_remove_dots (const ho_bitmap * m, const unsigned char erosion_n, const unsigned char dilation_n)
- int ho_bitmap_filter_count_objects (const ho_bitmap * m)
- int ho_bitmap_draw_box (ho_bitmap * m, const int x, const int y, const int width, const int height)
- int ho_bitmap_draw_box_empty (ho_bitmap * m, const int x, const int y, const int width, const int height)
- int ho_bitmap_draw_vline (ho_bitmap * m, const int x, const int y, const int height)
- int ho_bitmap_delete_vline (ho_bitmap * m, const int x, const int y, const int height)
- int ho_bitmap_draw_hline (ho_bitmap * m, const int x, const int y, const int width)
- int ho_bitmap_delete_hline (ho_bitmap * m, const int x, const int y, const int width)
- ho_bitmap* ho_bitmap_rotate (const ho_bitmap * m, const double angle)
- int ho_bitmap_pnm_save (const ho_bitmap * m, const char * filename)
- int ho_bitmap_tiff_save (const ho_bitmap * m, const char * filename)
- Author
NAME
src/ho_bitmap.h - libhocr C language header.SYNOPSIS
Data Structures
struct ho_bitmap
libhocr bitmap struct
Defines
#define HO_BITMAP_H 1
#define ho_bitmap_get(m, x, y) (((((m)->data[(x) / 8 + (y) * (m)->rowstride]) & (0x80 >> ((x) % 8))) > 0)?1:0)
#define ho_bitmap_set(m, x, y) (((m)->data[(x) / 8 + (y) * (m)->rowstride]) |= (0x80 >> ((x) % 8)))
#define ho_bitmap_unset(m, x, y) (((m)->data[(x) / 8 + (y) * (m)->rowstride]) &= ~(0x80 >> ((x) % 8)))
#define ho_bitmap_get_x(m) ((m)->x)
#define ho_bitmap_get_y(m) ((m)->y)
#define ho_bitmap_set_x(m, new_x) ((m)->x=(new_x))
#define ho_bitmap_set_y(m, new_y) ((m)->y=(new_y))
#define ho_bitmap_get_width(m) ((m)->width)
#define ho_bitmap_get_height(m) ((m)->height)
Functions
ho_bitmap * ho_bitmap_new (const int width, const int height)
int ho_bitmap_free (ho_bitmap *m)
ho_bitmap * ho_bitmap_clone (const ho_bitmap *m)
ho_bitmap * ho_bitmap_clone_window (const ho_bitmap *m, const int x, const int y, const int width, const int height)
int ho_bitmap_and (ho_bitmap *m_left, const ho_bitmap *m_right)
int ho_bitmap_or (ho_bitmap *m_left, const ho_bitmap *m_right)
int ho_bitmap_xor (ho_bitmap *m_left, const ho_bitmap *m_right)
int ho_bitmap_andnot (ho_bitmap *m_left, const ho_bitmap *m_right)
int ho_bitmap_copy (ho_bitmap *m_left, const ho_bitmap *m_right)
ho_bitmap * ho_bitmap_not (const ho_bitmap *m)
ho_bitmap * ho_bitmap_dilation_n (const ho_bitmap *m, const unsigned char n)
ho_bitmap * ho_bitmap_erosion_n (const ho_bitmap *m, const unsigned char n)
ho_bitmap * ho_bitmap_set_height (const ho_bitmap *m, const int height, const int top, const int bottom)
ho_bitmap * ho_bitmap_set_height_from_bottom (const ho_bitmap *m, const int height, const int top, const int bottom)
ho_bitmap * ho_bitmap_dilation (const ho_bitmap *m)
ho_bitmap * ho_bitmap_erosion (const ho_bitmap *m)
ho_bitmap * ho_bitmap_opening (const ho_bitmap *m)
ho_bitmap * ho_bitmap_closing (const ho_bitmap *m)
ho_bitmap * ho_bitmap_hlink (const ho_bitmap *m, const int size)
ho_bitmap * ho_bitmap_herode (const ho_bitmap *m, const int size)
ho_bitmap * ho_bitmap_vlink (const ho_bitmap *m, const int size)
ho_bitmap * ho_bitmap_edge (const ho_bitmap *m, const int n)
double ho_bitmap_get_fill (const ho_bitmap *m, const int x, const int y, const int width, const int height)
ho_bitmap * ho_bitmap_filter_hlink (ho_bitmap *m, int size, int max_height)
ho_bitmap * ho_bitmap_filter_by_size (const ho_bitmap *m, int min_height, int max_height, int min_width, int max_width)
ho_bitmap * ho_bitmap_filter_boxes (const ho_bitmap *m, const int leeway_down, const int leeway_up)
ho_bitmap * ho_bitmap_filter_fill (const ho_bitmap *m)
ho_bitmap * ho_bitmap_filter_set_height (const ho_bitmap *m, const int height, const int top, const int bottom)
ho_bitmap * ho_bitmap_filter_set_height_from_bottom (const ho_bitmap *m, const int height, const int top, const int bottom)
ho_bitmap * ho_bitmap_filter_obj_extend_lateraly (const ho_bitmap *m, const int ext_width)
ho_bitmap * ho_bitmap_filter_remove_dots (const ho_bitmap *m, const unsigned char erosion_n, const unsigned char dilation_n)
int ho_bitmap_filter_count_objects (const ho_bitmap *m)
int ho_bitmap_draw_box (ho_bitmap *m, const int x, const int y, const int width, const int height)
int ho_bitmap_draw_box_empty (ho_bitmap *m, const int x, const int y, const int width, const int height)
int ho_bitmap_draw_vline (ho_bitmap *m, const int x, const int y, const int height)
int ho_bitmap_delete_vline (ho_bitmap *m, const int x, const int y, const int height)
int ho_bitmap_draw_hline (ho_bitmap *m, const int x, const int y, const int width)
int ho_bitmap_delete_hline (ho_bitmap *m, const int x, const int y, const int width)
ho_bitmap * ho_bitmap_rotate (const ho_bitmap *m, const double angle)
int ho_bitmap_pnm_save (const ho_bitmap *m, const char *filename)
int ho_bitmap_tiff_save (const ho_bitmap *m, const char *filename)
Detailed Description
libhocr C language header.
libhocr - LIBrary for Hebrew Optical Character Recognition
Define Documentation
#define HO_BITMAP_H 1
#define ho_bitmap_get(m, x, y) (((((m)->data[(x) / 8 + (y) * (m)->rowstride]) & (0x80 >> ((x) % 8))) > 0)?1:0)
#define ho_bitmap_set(m, x, y) (((m)->data[(x) / 8 + (y) * (m)->rowstride]) |= (0x80 >> ((x) % 8)))
#define ho_bitmap_unset(m, x, y) (((m)->data[(x) / 8 + (y) * (m)->rowstride]) &= ~(0x80 >> ((x) % 8)))
#define ho_bitmap_get_x(m) ((m)->x)
#define ho_bitmap_get_y(m) ((m)->y)
#define ho_bitmap_set_x(m, new_x) ((m)->x=(new_x))
#define ho_bitmap_set_y(m, new_y) ((m)->y=(new_y))
#define ho_bitmap_get_width(m) ((m)->width)
#define ho_bitmap_get_height(m) ((m)->height)
Function Documentation
ho_bitmap* ho_bitmap_new (const int width, const int height)
new ho_bitamp
Parameters:
- height hight of pixbuf in pixels
width width of pixbuf in pixels
Returns:
- newly allocated ho_bitmap
int ho_bitmap_free (ho_bitmap * m)
free an ho_bitmap
Parameters:
- m pointer to an ho_bitmap
Returns:
- FALSE
Referenced by hocr::Hocr::do_bitmap_closing(), hocr::Hocr::do_bitmap_dilation(), hocr::Hocr::do_bitmap_erosion(), hocr::Hocr::do_bitmap_opening(), hocr::Hocr::do_image_processing(), hocr::Hocr::set_bitmap(), hocr::Hocr::set_pixbuf(), and hocr::Hocr::~Hocr().
ho_bitmap* ho_bitmap_clone (const ho_bitmap * m)
copy a bitmap
Parameters:
- m the bitmap to copy
Returns:
- newly allocated ho_bitmap
ho_bitmap* ho_bitmap_clone_window (const ho_bitmap * m, const int x, const int y, const int width, const int height)
copy a window from a bitmap
Parameters:
- m the bitmap to copy
x x-start of window
y y-start of window
width width of window
height height of window
Returns:
- newly allocated ho_bitmap
int ho_bitmap_and (ho_bitmap * m_left, const ho_bitmap * m_right)
do bitwise and of two bitmaps
Parameters:
- m_left the left hand bitmap
m_right the right hand bitmap
Returns:
- FALSE
int ho_bitmap_or (ho_bitmap * m_left, const ho_bitmap * m_right)
do bitwise or of two bitmaps
Parameters:
- m_left the left hand bitmap
m_right the right hand bitmap
Returns:
- FALSE
int ho_bitmap_xor (ho_bitmap * m_left, const ho_bitmap * m_right)
do bitwise xor of two bitmaps
Parameters:
- m_left the left hand bitmap
m_right the right hand bitmap
Returns:
- FALSE
int ho_bitmap_andnot (ho_bitmap * m_left, const ho_bitmap * m_right)
do bitwise and not of two bitmaps
Parameters:
- m_left the left hand bitmap
m_right the right hand bitmap
Returns:
- FALSE
int ho_bitmap_copy (ho_bitmap * m_left, const ho_bitmap * m_right)
do bitwise copy of two bitmaps
Parameters:
- m_left the left hand bitmap
m_right the right hand bitmap
Returns:
- FALSE
ho_bitmap* ho_bitmap_not (const ho_bitmap * m)
do bitwise not of a bitmap
Parameters:
- m the left hand bitmap
Returns:
- a newly allocated bitmap
ho_bitmap* ho_bitmap_dilation_n (const ho_bitmap * m, const unsigned char n)
dilation of a a bitmap with 3x3 box
Parameters:
- m the bitmap to dilate
n dilation constant
Returns:
- newly allocated ho_bitmap
ho_bitmap* ho_bitmap_erosion_n (const ho_bitmap * m, const unsigned char n)
erosion of a a bitmap with 3x3 box
Parameters:
- m the bitmap to erode
n erosion constant
Returns:
- newly allocated ho_bitmap
ho_bitmap* ho_bitmap_set_height (const ho_bitmap * m, const int height, const int top, const int bottom)
take only top height black pixels of bitmap
Parameters:
- m the bitmap to erode
height the height to take
top space above black pixel included in new object
bottom space below black pixel included in new object
Returns:
- newly allocated ho_bitmap
ho_bitmap* ho_bitmap_set_height_from_bottom (const ho_bitmap * m, const int height, const int top, const int bottom)
take only bottom height black pixels of bitmap
Parameters:
- m the bitmap to erode
height the height to take
top space above black pixel included in new object
bottom space below black pixel included in new object
Returns:
- newly allocated ho_bitmap
ho_bitmap* ho_bitmap_dilation (const ho_bitmap * m)
dilation of a a bitmap with 3x3 box
Parameters:
- m the bitmap to dilate
Returns:
- newly allocated ho_bitmap
Referenced by hocr::Hocr::do_bitmap_dilation().
ho_bitmap* ho_bitmap_erosion (const ho_bitmap * m)
erosion of a a bitmap with 3x3 box
Parameters:
- m the bitmap to erode
Returns:
- newly allocated ho_bitmap
Referenced by hocr::Hocr::do_bitmap_erosion().
ho_bitmap* ho_bitmap_opening (const ho_bitmap * m)
opening of a a bitmap with 3x3 box
Parameters:
- m the bitmap to open
Returns:
- newly allocated ho_bitmap
Referenced by hocr::Hocr::do_bitmap_opening().
ho_bitmap* ho_bitmap_closing (const ho_bitmap * m)
closing of a a bitmap with 3x3 box
Parameters:
- m the bitmap to close
Returns:
- newly allocated ho_bitmap
Referenced by hocr::Hocr::do_bitmap_closing().
ho_bitmap* ho_bitmap_hlink (const ho_bitmap * m, const int size)
horizontaly link black dots in a bitmap
Parameters:
- m the bitmap to horizontaly link
size maximum distance
Returns:
- newly allocated ho_bitmap
ho_bitmap* ho_bitmap_herode (const ho_bitmap * m, const int size)
horizontaly erode black dots in a bitmap
Parameters:
- m the bitmap to horizontaly link
size maximum distance
Returns:
- newly allocated ho_bitmap
ho_bitmap* ho_bitmap_vlink (const ho_bitmap * m, const int size)
verticaly link black dots in a bitmap
Parameters:
- m the bitmap to verticaly link
size maximum distance
Returns:
- newly allocated ho_bitmap
ho_bitmap* ho_bitmap_edge (const ho_bitmap * m, const int n)
copy edges in bitmap
Parameters:
- m pointer to an ho_bitmap
n width of egde
Returns:
- a newly allocated bitmap
double ho_bitmap_get_fill (const ho_bitmap * m, const int x, const int y, const int width, const int height)
return the ratio fill/volume value of a rectangle in the bitmap
Parameters:
- m pointer to an ho_bitmap
x x of rectangel
y y of rectangel
width width of rectangel
height height of rectangel
Returns:
- the ratio value
ho_bitmap* ho_bitmap_filter_hlink (ho_bitmap * m, int size, int max_height)
horizontaly link short objects in a bitmap
Parameters:
- m the bitmap to horizontaly link
size maximum distance
max_height maximum hight of objects to link
Returns:
- newly allocated ho_bitmap
ho_bitmap* ho_bitmap_filter_by_size (const ho_bitmap * m, int min_height, int max_height, int min_width, int max_width)
copy objects from bitmap to bitmap by size
Parameters:
- m pointer to an ho_bitmap
min_height only objects with this minimal height are copied
max_height only objects with this maximal height are copied
min_width only objects with this minimal width are copied
max_width only objects with this maximal width are copied
Returns:
- a newly allocated bitmap
ho_bitmap* ho_bitmap_filter_boxes (const ho_bitmap * m, const int leeway_down, const int leeway_up)
copy boxed objects from bitmap
Parameters:
- m pointer to an ho_bitmap
leeway_down space below object to be included in box
leeway_up space above object to be included in box
Returns:
- a newly allocated bitmap
ho_bitmap* ho_bitmap_filter_fill (const ho_bitmap * m)
copy filled objects from bitmap
Parameters:
- m pointer to an ho_bitmap
Returns:
- a newly allocated bitmap
ho_bitmap* ho_bitmap_filter_set_height (const ho_bitmap * m, const int height, const int top, const int bottom)
take height top pixels from objects in bitmap
Parameters:
- m pointer to an ho_bitmap
height of new objects
top space above black pixel included in new object
bottom space below black pixel included in new object
Returns:
- a newly allocated bitmap
ho_bitmap* ho_bitmap_filter_set_height_from_bottom (const ho_bitmap * m, const int height, const int top, const int bottom)
take height bottom pixels from objects in bitmap
Parameters:
- m pointer to an ho_bitmap
height of new objects
top space above black pixel included in new object
bottom space below black pixel included in new object
Returns:
- a newly allocated bitmap
ho_bitmap* ho_bitmap_filter_obj_extend_lateraly (const ho_bitmap * m, const int ext_width)
take extend objects lateraly
Parameters:
- m pointer to an ho_bitmap
ext_width width of lateral extention
Returns:
- a newly allocated bitmap
ho_bitmap* ho_bitmap_filter_remove_dots (const ho_bitmap * m, const unsigned char erosion_n, const unsigned char dilation_n)
remove halftone dots from bitmap
Parameters:
- m pointer to an ho_bitmap
erosion_n the erosion operator factor
dilation_n the dilation operator factor
Returns:
- a newly allocated bitmap
int ho_bitmap_filter_count_objects (const ho_bitmap * m)
count the number of objects in a bitmap
Parameters:
- m pointer to an ho_bitmap
Returns:
- the number of objects in a bitmap
int ho_bitmap_draw_box (ho_bitmap * m, const int x, const int y, const int width, const int height)
draw a black box on bitmap
Parameters:
- m the bitmap to draw on
x x-start of box
y y-start of box
width width of box
height height of box
Returns:
- FALSE
int ho_bitmap_draw_box_empty (ho_bitmap * m, const int x, const int y, const int width, const int height)
draw a black empty box on bitmap
Parameters:
- m the bitmap to draw on
x x-start of box
y y-start of box
width width of box
height height of box
Returns:
- FALSE
int ho_bitmap_draw_vline (ho_bitmap * m, const int x, const int y, const int height)
draw vertical line on bitmap
Parameters:
- m the bitmap to draw on
x x-start of line
y y-start of line
height height of line
Returns:
- FALSE
int ho_bitmap_delete_vline (ho_bitmap * m, const int x, const int y, const int height)
delete vertical line on bitmap
Parameters:
- m the bitmap to draw on
x x-start of line
y y-start of line
height height of line
Returns:
- FALSE
int ho_bitmap_draw_hline (ho_bitmap * m, const int x, const int y, const int width)
draw horizontal line on bitmap
Parameters:
- m the bitmap to draw on
x x-start of line
y y-start of line
width height of line
Returns:
- FALSE
int ho_bitmap_delete_hline (ho_bitmap * m, const int x, const int y, const int width)
delete horizontal line on bitmap
Parameters:
- m the bitmap to draw on
x x-start of line
y y-start of line
width height of line
Returns:
- FALSE
ho_bitmap* ho_bitmap_rotate (const ho_bitmap * m, const double angle)
rotate a bitmap
Parameters:
- m the bitmap to rotate
angle the angle in deg.
Returns:
- newly allocated ho_bitmap
int ho_bitmap_pnm_save (const ho_bitmap * m, const char * filename)
writes ho_bitmap to pnm file
Parameters:
- m ho_bitmap 1 bpp
filename save as file name
Returns:
- FALSE
Referenced by hocr::Hocr::save_bitmap_as_pnm().
int ho_bitmap_tiff_save (const ho_bitmap * m, const char * filename)
writes ho_bitmap to tiff file
Parameters:
- m ho_bitmap 1 bpp
filename save as file name
Returns:
- FALSE
Referenced by hocr::Hocr::save_bitmap_as_tiff().
Author
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Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre