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Hisilicon Hi3559 HI3519 HI3516 features pre-filtering encoding technology

Recently Hisilicon engineers unveiled some new image processing and encoding technologies to enhance imaging performance for the surveillance dedicated SoCs. According to the press release, the new technology - “pre-filtering encoding technique” can greatly reduce or eliminate the artifact. This overcomes temporal pumping artifact which is a typical problem for video encoding which often occurred for IP camera applications and seriously degrades the subjective video quality.

How pre-filtering encoding works? 

Pre-filtering encoding performs the block level-based temporal filtering for I frames, their subjective video quality is maintained consistent with their previous P frames, hence the entire video sequence is encoded with relatively stable quality so that pumping artifact is barely seen during the playback.

pre-filtering encoding technique demo video

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