Patent ID: 8958479
Filing Date: 2015-02-17
Classification: H04N

Abstract:
1. A compressed dynamic image encoding device operable to generate a motion vector by searching a reference image read from a frame memory for an image area most similar to an image area of a video input signal to be encoded; operable to generate a motion-compensated reference image as a predicted image, from the motion vector and the reference image read from the frame memory; operable to generate a prediction residual, by subtracting the motion-compensated reference image from the video input signal to be encoded; operable to generate the reference image to be stored in the frame memory, by adding the motion-compensated reference image and the result of processing of orthogonal transform, quantization, inverse quantization, and inverse orthogonal transform performed to the prediction residual; and operable to generate an encoded video output signal by the processing of orthogonal transform, quantization, and variable-length encoding performed to the prediction residual, wherein the reference image comprises an on-screen reference image located inside a video display screen, and an off-screen reference image located outside the video display screen, wherein the off-screen reference image is generated based on the positional relationship of a plurality of similar reference images of the on-screen reference image, wherein the on-screen reference image comprises a plurality of starting reference images, wherein a plurality of extended straight lines exist between the off-screen reference image and the starting reference images, wherein a plurality of similarities of reference images on each of the extended straight lines are calculated, and an extended straight line of the highest degree of similarity among the similarities is selected, and wherein image information of the off-screen reference image is generated on the basis of image information of the reference image of the extended straight line with the highest degree of similarity.