US 2019/0172428 A1 · METHOD AND SYSTEM FOR DETECTING VIDEO SCAN TYPE

Abstract

The disclosure is related to a method and a system for detecting a video scan type. In the method, a first frame and a second frame are firstly extracted from a video. The scan lines of each frame can be divided into a top field and a bottom field. A first zipper index of the combination of the top field of the first frame and the bottom field of the second frame is obtained. Further, a second zipper index of the combination of the bottom field of the first frame and the top field of the second frame is also obtained. A zipper index difference between the first zipper index and the second zipper index is calculated and is provided to determine the video scan type as an interlaced-scan video or a progressive-scan video.

Claims20

Dependent claims

A method for detecting a video scan type, comprising:

obtaining pixel information relating to a first frame and a second frame extracted from a video;
dividing scan lines of each of the first frame and the second frame into a top field and a bottom field;
calculating a first zipper index from a combination of the top field of the first frame and the bottom field of the second frame;
calculating the a second zipper index from a combination of the bottom field of the first frame and the top field of the second frame;
calculating a zipper index difference between the first zipper index and the second zipper index;
according to the zipper index difference, determining a video scan type of the video;
wherein, the video is an interlaced-scan video if the zipper index difference is larger than a predetermined threshold, and the video is a progressive-scan video if the zipper index difference is not larger than the predetermined threshold.

4 more elements

Dependencies are inferred from the claim text.

Method and system for detecting video scan type

Life of this patent

Method and system for detecting video scan type

Life of this patent

Abstract

Claims20