dot crawl


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dot crawl

An artifact of composite video sources in which dots seem to crawl between contrasting colors. This is the result of an inexpensive comb filter that does not entirely separate the luma from the chroma (the black & white from the color). Also called "cross-luma."


Dots Crawling
Dot crawl (cross-luma) is noticeable at the boundary of contrasting colors such as blue and yellow. (Image courtesy of Home Theater and High Fidelity, www.hometheaterhifi.com)
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58 notch filter reduces dot crawl, and Video Noise Reduction helps smooth the picture.
Chrominance and luminance filters limit dot crawl effects and tearing effects are managed using a dedicated tearing effect signal.
When this connection is utilized, typical NTSC artifacts -- like video noise, dot crawl, and flicker -- are virtually eliminated, resulting in a low-noise, highly detailed picture with unequaled color purity.
TVX2 provides sharp text, superb graphics, and vivid video quality while substantially reducing dot crawl and color bleeding," said Dr.
By comparison with the original Digital Home Theater(TM) unit, black levels are significantly better, the colors are more vivid and dot crawl is virtually non-existent.
A high-performance, adaptive 4-line comb filter significantly reduces -- dot crawl -- and enhances image resolution and detail.
Notable picture enhancements include a 3-Line Digital Comb Filter to reduce dot crawl and produce a more stable and clear video image.
The 13-inch KV-13FM12 (gray), KV-13FM13 (white) and KV-13FM14 (blue), produce superb picture performance and feature a 3-Line Digital Comb Filter for clearer display of video images and the elimination of dot crawl.