| 摘要 |
A perceptual error processing method and an image coding device using the same, which includes a generator for generating a predictive error image from the difference between an original image of a present frame to be coded and a restored image of a previous frame, a coder for coding the predictive error image through discrete cosine transform and quantization, a former for forming the coded predictive error image into a bitstream after performing variable length coding, a decoder for decoding the coded predictive error image through inverse quantization and inverse discrete cosine transform, a predictor for predicting the restored image of the previous frame by estimating and compensating a movement from the decoded predictive error image, and a perceptual error processor which reconstructs the predictive error image into a perceptual error image composed of only the predictive error generating the perceptual color difference by using a perceptual color difference look-up table and applies the same to the coder. Therefore, the coding efficiency of the image can be improved by enhancing the temporal and spatial correlation between the image data without causing deterioration of picture quality of the restored image by applying the human color perception to a conventional image coding method.
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