Image compression device and image compression method

• Main Authors: OOI TOSHIHARU, KINOSHITA YU
• Format: Patent
• Language: Chinese; English
• Published: 30.05.2012
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

The invention provides an image compression device and an image compression method. A high-frequency integrator acquires a first integrated value by integrating a high-frequency component of first image data. A corrector handles second image data, which is obtained when an image processor subjects the first image data to an image process affecting frequency characteristics, and acquires a second integrated value by correcting the first integrated value acquired by the high-frequency integrator in accordance with a change in the frequency characteristics that is brought about by the image process. An encoder calculates, in accordance with the second integrated value acquired by the corrector, a quantization scale for compressing the second image data acquired by the image processor to a predefined number of bytes at once, and compresses the second image data accordingly.