Some overlapping images produce few / no control points in certain regions of the overlap, usually areas with low levels of entropy. This occurs even when otherwise dense detectors like AKAZE are used. It is unclear if this is a masking issue during feature detection, an issue with the image alignment / distortion, or some filtering of the points based on shooting pattern.
Some overlapping images produce few / no control points in certain regions of the overlap, usually areas with low levels of entropy. This occurs even when otherwise dense detectors like AKAZE are used. It is unclear if this is a masking issue during feature detection, an issue with the image alignment / distortion, or some filtering of the points based on shooting pattern.