Figure 2From: Automatic Level Control for Video Cameras towards HDR Techniques(a) Median of the input image is less sensitive than the average to very bright pixels in the background. (b) Histogram of two input signals, a and b. (c) Cumulative functions based on input signals a and b. Although not very different, they yield very different medians, which can lead to instability. We propose to modify calculation of the median by looking at its 2δ neighborhood.Back to article page