VIDEO MANAGEMENT

摘要

The disclosure relates to a method of processing a sequence of image frames to reduce its length. One implementation may involve extracting coefficients (e.g., Discrete Cosine Transform coefficients) from components of individual frames, and comparing the resulting coefficients for sequential frames to identify frames having the least change from a prior frame. Also, scene change values for each frame may be calculated and placed in a sorted list to facilitate identification of frames for removal. Frame removal may be conducted in rounds, where a group of pictures (GOP) may only have one frame removed for any given round.

主权项

1. A method, comprising:
obtaining luminance component coefficient values for a plurality of image frames in a sequence of image frames; generating a scene change value for each of the plurality of image frames by comparing the coefficient values for sequential ones of the plurality of image frames; ranking the plurality of image frames according to their scene change values; and selecting one or more of the image frames for removal based on the ranked plurality of image frames.