![]() In terms of CIE 1931 color space, the Rec. 2020 (UHDTV) color space which can reproduce colors that cannot be shown with the current Rec. UHDTV allows the future use of the new Rec. Specifically, dynamic range and color are greatly enhanced, and these impact saturation and contrast differences that are readily resolved greatly improve the experience of 4KTV compared to HDTV. UHDTV provides other image enhancements in addition to pixel density. One exception is that even if resolution surpasses the resolving ability of the human eye, there is still an improvement in the way the image appears due to higher resolutions reducing spatial aliasing. At some home viewing distances and current TV sizes, HD resolution is near the limits of resolution for the eye and increasing resolution to 4K has little perceptual impact, if consumers are beyond the critical distance ( Lechner distance) to appreciate the differences in pixel count between 4K and HD. The human visual system has a limited ability to discern improvements in resolution when picture elements are already small enough or distant enough from the viewer. NHK advertises the 8K UHDTV format with 22.2 surround sound as Super Hi-Vision.Ĭolor space, dynamic range, frame rate and resolution/aliasing
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