Adaptive pre-filtering system

摘要

A method, system and apparatus for adaptive pre-filtering includes: extracting tuning parameters from video data in a video encoding process; processing the tuning parameters to generate control parameters representative of properties of the video data; coupling the control parameters to a filter response; generating filter coefficients according to the filter response; and filtering the video data using the filter coefficients prior to video encoding. The filtering of video data may thus be adapted to one or more tuning parameters of the video data and the encoding process. The filtering may decrease the complexity of encoding by an attenuation of high frequency signals, effectively decreasing the quantization step and reducing compression artifacts.

主权项

1. A method for adaptive pre-filtering of input video data for video encoding using a linear filter module, comprising:
receiving the input video data, wherein the input video data includes at least one tuning parameter of the group consisting of motion, quantization, variance, and mean square error prediction; extracting the at least one tuning parameter according to a type of video encoding; processing the at least one tuning parameter to generate at least one corresponding control parameter; coupling the at least one control parameter to a predetermined filter response; generating a plurality of filter coefficients based on the predetermined filter response; filtering the input video data with the linear filter module having the applied plurality of filter coefficients; and compensating for dynamic latency between the filtered input video data and a video encoding process.