Robust detection of mosaic masking region

In this paper, a novel method to automatically detect mosaic masking regions in an input image is proposed. Mosaic masking region can be used as an important clue for recognizing commercial pornographic images. The proposed method is composed of three steps. The first step is to extract SRE features using a new cross-shaped feature characteristic, and the second step is to estimate the parameters of a mosaic candidate region, and the final step is SRD verification using the characteristic of luminance distribution in a mosaic masking region. Proposed method is fast and robust to blurring effects caused by image resizing and low quality video compression and it can be used for computer vision application to block adult videos.