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Pre-processing method and system for data reduction of video sequences and bit rate reduction of compressed video sequences using temporal filtering
Pre-processing method and system for data reduction of video sequences and bit rate reduction of compressed video sequences using temporal filtering
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机译:使用时间滤波的视频序列数据缩减和压缩视频序列比特率降低的预处理方法和系统
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摘要
Methods for pre-processing video sequences prior to compression to provide data reduction of the video sequence. In addition, after compression of the pre-processed video sequence, the bit rate of the pre-processed and compressed video sequence will be lower than the bit rate of the video sequence after compression but without pre-processing. A temporal filtering method is provided for pre-processing of video frames of a video sequence. In the method, pixel values of successive frames are filtered when the difference in the pixel values between the successive frames are within high and low threshold values. The high and low threshold values are determined adaptively depending on the illumination level of a video frame to provide variability of filtering strength depending on the illumination levels of a video frame.
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