Zero Crossing functions. More...
#include <stdio.h>#include <math.h>
Go to the source code of this file.
Macros | |
| #define | TINY 1.0e-3 |
Functions | |
| int | G_math_findzc (double conv[], int size, double zc[], double thresh, int num_orients) |
| Finds locations and orientations of zero crossings. More... | |
Detailed Description
Zero Crossing functions.
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This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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- Date
- 2006
Definition in file findzc.c.
Macro Definition Documentation
◆ TINY
| #define TINY 1.0e-3 |
Definition at line 32 of file findzc.c.
Referenced by G_math_findzc().
Function Documentation
◆ G_math_findzc()
| int G_math_findzc | ( | double | conv[], |
| int | size, | ||
| double | zc[], | ||
| double | thresh, | ||
| int | num_orients | ||
| ) |
Finds locations and orientations of zero crossings.
Finds the locations and orientations of zero crossings in the input array conv, which is the result of the convolution of the Marr-Hildreth operator with the image. The output array is zc, which is non-zero only at zero crossing pixels. At those pixels, the value is 1 + (orientation), where orientation is a value from 0 to num_orients.
- Parameters
-
[in] conv input [in] size size of largest matrix column or row [out] zc output [in] thresh magnitude threshold [in] num_orients
- Returns
- int always returns 0
