Is there a way to normalize incoming frames regarding the color? I am extracting ORB features from incoming frames and match them to a reference frame. But the different lightning conditions often make it really hard to match but when manually adjusting the brightness/contrast etc the matching improves. Is there a way to tell the ORB descriptors to adjust for higher lightning & color differences? Or is there a way to normalize the brightness of the complete frame? Or a complete different concept I should try?