Adaptive Filtering for Panoramic Video Zigzag Reduction

The patent applies different quality levels to different regions of the panoramic video. The primary perspective region maintains high resolution and minimal filtering to preserve detail, while secondary perspective regions apply adaptive filtering to reduce high-frequency components that cause zigzag effects. This local differentiation resolves the contradiction by allowing compression in less critical regions without compromising the overall viewing experience.

The patent dynamically adjusts filtering parameters based on the perspective region and high-frequency component distribution. By changing the filtering strength and type according to local characteristics, the system achieves better compression while controlling zigzag effects in regions where they are most problematic, without unnecessarily degrading image quality in primary viewing areas.

The patent applies filtering selectively only to secondary perspective regions where zigzag effects are most problematic, while leaving the primary perspective region unfiltered or minimally filtered. This localized approach ensures that sharpness is preserved in the most important viewing area while still achieving zigzag reduction in peripheral regions.

The patent applies partial filtering action rather than uniform filtering across the entire image. By applying filtering only to specific secondary regions and not to the primary perspective region, the system achieves sufficient zigzag reduction without excessive filtering that would degrade overall image sharpness.