Patent ID: 8212939
Filing Date: 2012-07-03
Classification: H04N

Abstract:
1. A method for assessing the quality of a video sequence, which is output by a video capture device, by attributing at least one score MOSo to said sequence, said method comprising the steps of calculating a series of interframe similarities s(i) of said sequence, each interframe similarity s(i) indicative of a similarity of two consecutive frames in said sequence, using said interframe similarities s(i) for calculating said score MOSo, calculating a downsampling factor DS from said interframe similarities s(i) and using said downsampling factor DS for calculating said score MOSo, comparing said interframe similarities s(i) to a first threshold value, an interframe similarity s(i) being less than the first threshold value indicating a frame change between frames i−1 and i, thus allowing a calculation of a series of interframe distances between frame changes, binning said interframe distances for calculating a series of bin values H(i), with bin i corresponding to an interframe distance i, and calculating said downsampling factor DS from the largest bin values, wherein said downsampling factor DS is calculated from with bins i1 and i2 being the bins with the two largest bin values H(i1), H(i2).