| 摘要 |
An image compression device includes a motion vector detecting section, a determination section, an intra-frame compression section, and an inter-frame compression section. The motion vector detecting section obtains a motion vector between sets of image data at a plurality of positions on an image. The determination section determines whether a spatial variation of the motion vector on the image is large or small. The intra-frame compression section selects an image area A, which is determined to have the large spatial variation of the motion vector, from the image data to be compressed, and subjects the selected image area A to intra-frame compression. The inter-frame compression section selects an image area B, which is determined to have the small spatial variation of the motion vector, from the image data to be compressed, and subjects the selected image area B to inter-frame prediction differential compression.
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