| 摘要 |
<p>Motion picture data is compression-encoded by a compression encoding means on frame image data basis, and while being stored once in a buffer, the frame rate is changed by a frame rate changing means according to the amount of accumulated data of the buffer, which can adequately change the number of pieces of frame image data to be compression-encoded per unit time, according to the change in the picture of the motion picture, so as to stabilize compressibility and to stabilize the image quality of the motion picture, thus making it possible to adequately provide the motion picture of desired image quality. <??>In addition, a tracing means traces extract image data in the frame image data by using a simple motion vector detected for the frame image data of the motion picture data, a higher layer motion vector detection means detects a motion vector of the frame image data by using the simple motion vector in common, and a compression encoding means extracts the extract image data based on the results of tracing and compression-encodes it by using the motion vector, thus making it possible to significantly reduce the amount of operation for detecting the motion vector and further speed up the compression encoding processing of the extract image data. <IMAGE></p> |
