Image coded data re-encoding apparatus without once decoding the original image coded data

摘要

An image coded data re-encoding apparatus (30) which generates in an image coded data analyzer (310) coded data after signal processing (221) by performing a first digital signal processing on first image coded data (220), supplies an image coded data synthesizer (320) with the coded data after signal processing (221) and multiple signals (222) associated with the first image coded data, and generates in the image coded data synthesizer (320) a second image coded data (240) by performing on the coded data after signal processing (221) a second digital signal processing based on multiple signals (222). The second image coded data is generated without once decoding the first image coded data. This makes it possible to prevent degradation in image quality, delay involved in the transform and an increase of the device size.