| 摘要 |
PROBLEM TO BE SOLVED: To obtain an image processor in which high quality image compression can be ensured for a document mixing character images and natural images with high compression rate, and a high quality image can be outputted by subjecting decompressed character image and photograph image to adaptive processing, respectively. SOLUTION: A character region detecting section 104 detects a character part from the binary image 103 of an original image 101, and generates a character region coordinate 111. A character part interpolating section 105 removes the character part from the original image 101 based on the character region information 111, generates a multilevel non-character image A through interpolation with image data on the periphery of the character part, and then generates a compression code X112 through JPEG compression. A character extracting section 108 extracts the character part from the original image 101 based on the character region information 111 to generate a binary character image 109, and then generates a compression code Y113 through MMR compression. Since the compression codes of the character part and the non-character part can be stored independently, adaptive processing can be carried out at the time of decompression. COPYRIGHT: (C)2003,JPO
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