Detect features from an image with BRISK algorithm
fobj = imdetect_BRISK(im [,thresh [,octaves [,patternScale]]]);
Input image
FAST/AGAST detection threshold score. Default value is 30.
detection octaves. Use 0 to do single scale. Default value is 3.
apply this scale to the pattern used for sampling the neighbourhood of a keypoint. Default value is 1.0.
Features object contains following fields -
Type of features
Numbers of detected features
Coordinates of the detected features - X
Coordinates of the detected features - Y
Size of detected features
keypoint orientation
The response by which the most strong keypoints have been selected.
pyramid octave in which the keypoint has been detected
object id
This function used to detect the features of an image using BRISK method
1. OpenCV 2.4 Online Documentation