Patent ID: 8675132
Filing Date: 2014-03-18
Classification: H04N

Abstract:
1. A method for detecting de-interlacing for scaled video, comprising: for every scaling ratio α of a given set α∈I computing a measure, ρ(α) which indicates the visibility of de-interlacing artifacts given that the content was scaled with vertical factor α, by performing the following: analyzing the measure ρ(α) and defining a de-interlacing quality measure Q that is inversely proportional to visibility of peak(s) in ρ(α) as a function of α; analyzing the measure ρ(α) and defining the most probable vertical scaling ratio β as α corresponding to the maximum of ρ(α); and defining the positions corresponding to original lines in the scaled content as maxima of cos(π(βy+n)+φ(β)).