Method of effectively suppressing coding ringing effect, coder and coding method

摘要: In a method of effectively suppressing coding ringing effect provided by the invention, an actual quantized loss value is obtained prediction, whether excessive appears judged to determine carry out suppression and block effect, extra resources are not occupied; filtering carried before reconstruction obtain optimal result current y, same embedded in block-based process coder, processing accuracy real-time performance insufficiency caused disengaging coder avoided; LMMSE criterion used for filtering, low-bit-rate/very-low-bit-rate applications, appearing near strong edges due on high-frequency signals components can be suppressed. The invention also provides method, which mode result, have higher compression efficiency better subjective quality performance.