Method for generating thumbnail image in image frame of the H.264 standard

摘要

The present invention relates to a method for generating a thumbnail image for a video image, and more particularly, to a method for generating a thumbnail image for a video image that includes directly computing a DC coefficient of a prediction block for the video block constituting a video image from a prediction reference pixel of the video block of a spatial domain, and computing a DC coefficient of the video block from the computed DC coefficient of the prediction block and from a DC coefficient of an residual block for the video block. The method for generating a thumbnail image according to the present invention directly computes a DC coefficient of the video block from the DC coefficient of the residual block for the video block and the DC coefficient of the prediction block for the video block, thus generating a thumbnail image for a video image of the H.264 standard without transforming the video block between the spatial domain and a transform domain constituting a video image, and quickly searching a specific video image through the thumbnail image in a multimedia terminal where a plurality of video images are stored.