diff options
Diffstat (limited to 'src/kernels/morphology.cl')
| -rw-r--r-- | src/kernels/morphology.cl | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/src/kernels/morphology.cl b/src/kernels/morphology.cl index 2f0c38d..af76b58 100644 --- a/src/kernels/morphology.cl +++ b/src/kernels/morphology.cl @@ -17,14 +17,26 @@ * License along with this library. If not, see <http://www.gnu.org/licenses/>. */ +/** + * Set mask to 1 if value exceeds threshold. If sgn is -1, value has to be below + * threshold, if it is 1 it has to be above threshold, if it is 0 absolute value + * is compared. + */ kernel void -set_abs_above_threshold (global float *input, +set_above_threshold (global float *input, global float *output, - const float threshold) + const float threshold, + const int sgn) { int index = get_global_id (1) * get_global_size (0) + get_global_id (0); + float value = input[index]; + if (!sgn) { + value = fabs (value) - threshold; + } else { + value = sgn * (value - threshold); + } - output[index] = fabs (input[index]) > threshold ? 1 : 0; + output[index] = value > 0 ? 1 : 0; } kernel void |