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Interlacing problems
Another typical location where algoritms may have problems deinterlacing is a location where camera pans from left to right or from right to left:
A moving camera can cause problems when deinterlacing (click to enlarge)
The two fields that form the image belong to the same scene, but the camera moves a bit to the left:
The first field in the frame (click to enlarge)
The second field in the frame (click to enlarge)
This is a really serious problem when text scrolls horizontally, at the bottom of the image:
Vertical scrolling text is also affected and causes a fair amount of trouble:
Some digital cameras have problems recording and interlacing images, sometimes the color smears or bleeds. This is usually because the internal hardware places different colors on different fields or because some CCD sensors react slower to some of the colors in the image.
Because there are so many issues and things to consider, there hardly is a deinterlacing method that would work with any video material. One has decide which method to use considering lots of factors.
In the next pages, I'll try to explain some of the deinterlacing methods known.
Next > Deinterlacing methods (I)
Contents
1. Introduction
2. Interlacing problems
3. Interlacing problems (continued)
4. Deinterlacing methods (I)
5. Deinterlacing methods (II)
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