Talk:Video scaler

message: The article gives the impression that upscalers are mainly hardware devices, but upscaling is also frequently done in software.
I would change the article to explain upscaling in a more device neutral way. Kwinzman (talk) 12:08, 3 May 2021 (UTC)
thread_title:  The article gives the impression that upscalers are mainly hardware devices 

message: The passage I deleted in this article gave an example of upscaling as a standard LCD computer monitor upscaling a 640x480 VGA signal to a much larger resolution.  This is preposterous... computers haven't output standard VGA for over a decade, perhaps two, except for the POST sequence.  LCD monitors actually ADJUST to the output of modern video cards, which output a far greater resolution than 640x480.  I suppose it's assumptions like this (all PCs output VGA, it's just "upscaled") that make the youth of today actually believe that true "upscaling" is even possible.  Raster images are simply not scalable upward, so all that's taking place is pixel doubling.
Another example was given about the image being processed and filtered to "retain original detail", which is completely fallacious.  Most of this article does seem to acknowledge that NO lost detail can be regained by "upscaling", but that particular example was completely misleading at best.  Image processing can only attempt to smooth out the effects of pixel doubling, but it CANNOT reconstruct original detail.  Image processing algorithms, no matter how advanced, can't tell a house from a tree, and have no way of "knowing" what detail was there to begin with.  The ONLY way to see 1080 lines of detail is to view a source containing 1080 lines of resolution.  Upscaling a 480-line source (standard DVD, for example) to fit a 1080-line display will only give you 480 lines that are simply LARGER than they were originally.  Adding "image processing" will only BLUR those lines, not add any extra detail or improve image quality.
I agree with whomever suggested that this page needs MAJOR cleanup. MaxVolume (talk) 22:48, 7 December 2009 (UTC)
thread_title:  LCD monitors for computers do NOT simply upscale a "VGA signal". 

message: upconversion redirects here, but term is never used. Mathiastck (talk) 16:46, 23 June 2010 (UTC)
replies: text: LOL...I just looked up upconversion here yesterday. (grin) It does redirect to the section on upconverting DVDs...is upconversion generally used in other contexts? It might be confusing if the redir didn't go specifically to that section. Doniago (talk) 18:36, 23 June 2010 (UTC)
thread_title:  upconversion 

message: as a possible article title alternative. Twipley (talk) 23:51, 21 April 2011 (UTC)
thread_title:  video "scaling" in place of "scaler" 

message: I believe every Blu-ray player ever made is also a DVD upscaler (Are there any exceptions, however obscure?), so should the article mention this? What kind of upscaler are they? Does the quality of the upscaling vary across models?  — Preceding unsigned comment added by 4.254.82.104 (talk) 01:11, 26 May 2011 (UTC)
thread_title:  Blu-ray players are DVD upscalers too 

message: The entire article is in desperate need of sourcing, but I'm moving some of the more troublesome sections here. Please feel free to properly reference and reincorporate into the article text. Doniago (talk) 13:28, 29 July 2011 (UTC)
thread_title:  Unsourced Material