mirror of
https://github.com/DrKLO/Telegram.git
synced 2024-12-23 06:50:36 +01:00
61 lines
3 KiB
C++
61 lines
3 KiB
C++
/*
|
|
FAST-EDGE
|
|
Copyright (c) 2009 Benjamin C. Haynor
|
|
|
|
Permission is hereby granted, free of charge, to any person
|
|
obtaining a copy of this software and associated documentation
|
|
files (the "Software"), to deal in the Software without
|
|
restriction, including without limitation the rights to use,
|
|
copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
copies of the Software, and to permit persons to whom the
|
|
Software is furnished to do so, subject to the following
|
|
conditions:
|
|
|
|
The above copyright notice and this permission notice shall be
|
|
included in all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
|
|
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
|
|
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
|
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#ifndef _FASTEDGE
|
|
#define _FASTEDGE
|
|
|
|
namespace ocr{
|
|
//#define WIDTH 640 // uncomment to define width for situations where width is always known
|
|
//#define HEIGHT 480 // uncomment to define heigh for situations where height is always known
|
|
|
|
//#define CLOCK // uncomment to show running times of image processing functions (in seconds)
|
|
//#define ABS_APPROX // uncomment to use the absolute value approximation of sqrt(Gx ^ 2 + Gy ^2)
|
|
//#define PRINT_HISTOGRAM // uncomment to print the histogram used to estimate the threshold
|
|
struct image {
|
|
int width;
|
|
int height;
|
|
unsigned char * pixel_data;
|
|
};
|
|
|
|
void canny_edge_detect(struct image * img_in, struct image * img_out);
|
|
void gaussian_noise_reduce(struct image * img_in, struct image * img_out);
|
|
void calc_gradient_sobel(struct image * img_in, int g[], int dir[]);
|
|
void calc_gradient_scharr(struct image * img_in, int g_x[], int g_y[], int g[], int dir[]);
|
|
void non_max_suppression(struct image * img, int g[], int dir[]);
|
|
void estimate_threshold(struct image * img, int * high, int * low);
|
|
void hysteresis (int high, int low, struct image * img_in, struct image * img_out);
|
|
int trace (int x, int y, int low, struct image * img_in, struct image * img_out);
|
|
int range (struct image * img, int x, int y);
|
|
void dilate_1d_h(struct image * img, struct image * img_out);
|
|
void dilate_1d_v(struct image * img, struct image * img_out);
|
|
void erode_1d_h(struct image * img, struct image * img_out);
|
|
void erode_1d_v(struct image * img, struct image * img_out);
|
|
void erode(struct image * img_in, struct image * img_scratch, struct image * img_out);
|
|
void dilate(struct image * img_in, struct image * img_scratch, struct image * img_out);
|
|
void morph_open(struct image * img_in, struct image * img_scratch, struct image * img_scratch2, struct image * img_out);
|
|
void morph_close(struct image * img_in, struct image * img_scratch, struct image * img_scratch2, struct image * img_out);
|
|
}
|
|
#endif
|