METHOD AND ARRANGEMENT OF CODING DIGITAL IMAGE SIGNALS UTILIZING INTERFRAME CORRELATION

摘要

"Method and Arrangement ofCoding Digital Image SignalsUtilizing Interframe Correlation"ABSTRACT OF THE DISCLOSUREIn order to encode image signals using interframecorrelation while maintaining high data compression aswell as high resulting images, a motion compensatedinterframe prediction error is orthogonally transformedand then is subject to quantization. Thereafter, thequantized error signal undergoes inverse orthogonaltransformation. In order to compensate for distortionscaused by the quantization, a difference between theinversely orthogonally transformationed error signal andthe original prediction error signal is quantized. Byselecting the quantization characteristics, the influenceor contribution of the orthogonal transformation can becontrolled continuously.