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Do line doublers improve the picture clarity or just get rid of scan lines?Or do they accomplish both? Thanks.
 

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Originally posted by Quinton:
Do line doublers improve the picture clarity or just get rid of scan lines?Or do they accomplish both? Thanks.
It depends . . . (nice lawyer answer)


It depends on the quality of the line doubler and what you mean by "improve picture clarity".

A "line doubler" (or better termed "deinterlacer") in a progressive DVD player that does 3:2 pull down definitely improves picture clarity by matching up the proper interlace fields from the same frame as showing them as a full 480p frame.


An interpolating "line doubler" doesn't really add new information, but it does interpolate between lines to improve the image.


A "dumb" line doubler just doubles the lines and really doesnt improve clarity but does get ride of the scan line flicker.


So it really does depend . . .

 
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