Keypoint histogram🔗
Calculates the gray-level histogram around a set of key points.
Inputs🔗
image: Input image. If a color image is received, its intensity will be used.points: Points of interest in world coordinates. An N-by-2 or N-by-3 matrix.radius: Radius of the region-of-interest (ROI) around each key point on which the histogram is calculated, in pixels.shape: The shape of the ROI around each key point.
Outputs🔗
histogram: a histogram for each key point. An N-by-K integer matrix, where N is the number of key points and K is the length of the histogram, which depends on the maximum possible (not actual) value in the input image.