TIEVisionFeaturesDetector.setThreshold
Declaration
procedure setThreshold(value: Double); safecall;
Description
Specifies the sensitivity of the keypoint detector. Higher values find fewer, stronger keypoints. 0 restores the default of the algorithm.
| Algorithm | Meaning | Default |
| ievFeatureORB | FAST threshold | 20 |
| ievFeatureSIFT | Contrast threshold | 0.04 |
| ievFeatureAKAZE | Detector response threshold | 0.001 |
| ievFeatureKAZE | Detector response threshold | 0.001 |
| ievFeatureBRISK | AGAST threshold | 30 |
Lower the threshold if too few keypoints are found in images with little contrast.
See Also
◼detect