Patent ID: 7536055
Filing Date: 2009-05-19
Classification: H04N

Abstract:
1. An image compression device which performs lossy compression on original image data, comprising: (i) a first segmentation section for performing segmentation on the original image data and then generating a segmentation signal indicating a result of the segmentation; (ii) an image compressing section for performing lossy compression on the original image data to generate compression image data; (iii) a first image decompressing section for decompressing the compression image data to generate decompression image data; (iv) a second segmentation section for performing segmentation on the decompression image data and then generating a decompression segmentation signal indicating a result of the segmentation; (v) a differential extracting section for extracting a differential between the segmentation signal and the decompression segmentation signal, and then generating a differential signal indicating a result of the extraction; and (vi) a differential signal compressing section for performing lossless compression on the differential signal to generate a compression differential signal.