Patent ID: 8789085
Filing Date: 2014-07-22
Classification: G06F,G06T

Abstract:
1. A non-transitory computer program product, stored in the memory of at least one computer and including software code portions for performing a method of detecting pornographic contents in a sequence of video frames having associated respective motion vectors, the method including: identifying in said frames groups of motion vectors having similar orientation and module, identifying the presence in subsequent frames in said sequence, of motion types defined by groups of motion vectors affiliated as having homologous motion characteristics in subsequent frames, detecting, in said motion types, the occurrence of negative affiliations representative of an inversion in the movement of the corresponding group of vectors, counting the number of said negative affiliations over a given interval, and if the number of negative affiliations counted reaches a given count threshold, identifying in said sequence of frames a periodic movement susceptible of having pornographic content; wherein the sequence of video frames represents a sexual act having an alternating repetitive motion along one or more axes in a fixed region of a screen, and wherein using the information of the motion vectors of the video corresponding motion patterns are detected without having to intervene on the pixel domain and/or in the information frequency domain.