A METHOD FOR REDUCING INTENSITY VARIATIONS IN A VIDEO IMAGE STREAM DEPICTING A SCENE

摘要

The present invention relates to a method 20 and a digital video camera 30 for reducing intensity variation in a video stream depicting a scene. The method 20 includes: capturing the first frame 50 using a first sensor setting (S202); Detecting a change in intensity in a portion 590 of the first frame 50 (S204); Determining a second sensor setting based on the first frame 50 (S206); Capturing the second frame (60, 70) using the second sensor setting (S208); Generating a local tone mapping mask (S210)-The local tone mapping in the first area of the scene is different from the local tone mapping in the area outside the first area, and Local tone mapping from the outside is based on a relationship between the first sensor setting and the second sensor setting; And applying the local tone mapping mask to the second frames 60 and 70 (S212).