General: upscale

3_toes absurd_res after_sex anthro anus balls barefoot big_butt butt canine comic cum cum_in_ass cum_inside cum_on_tail digital_media_(artwork) fur hi_res looking_at_viewer lucario lying male mammal messy naughty_face nintendo open_mouth pawpads paws pokémon pokémon_(species) presenting red_eyes shama_nia solo teeth text toes uncensored upscale video_games

Rating: Explicit
Score: 39
User: Rushurum
Date: December 21, 2016
Deleted: Inferior version/duplicate of post #1340614 2016 absurd_res aliasing anthro bat big_breasts bikini breasts cleavage clothed clothing female hi_res huge_breasts mammal membranous_wings rouge_the_bat smile solo sonic_(series) speeds swimsuit upscale wings

Rating: Questionable
Score: 8
User: Robinebra
Date: November 16, 2016 abs absurd_res alpha_channel anthro athletic balls barefoot blue_eyes blue_skin blush claws digimon door edit erection fan_character flamedramon foreskin front_view giancarlo_rosato hi_res humanoid_penis long_foreskin looking_at_viewer male navel nipples nude open_mouth pecs penis pose prehensile_tail roommates_(comic) scalie simple_background smile solo spelunker_sal standing teeth toe_claws tongue transparent_background uncut upscale white_balls white_penis

Rating: Explicit
Score: 29
User: Jekjekje
Date: September 22, 2016 2016 <3 anal anal_penetration animated anthro clothing cowgirl_position cum cum_on_clothing cum_while_penetrated cumshot digimon digiphilia digital_media_(artwork) duo ejaculation erection faceless_male grey_background guilmon hands-free human low_res lying male male/male male_penetrating mammal navel on_back on_top orgasm penetration penis pixel_(artwork) pixel_animation red_scales scales scalie sex shirt simple_background twinfox upscale

Rating: Explicit
Score: 19
User: Mario69
Date: May 25, 2016
In order: Bilinear, nearest-neighbor, waifu2x, nearest-neighbor on pixel art.

To artificially increase and modify aspects of uploaded content. By definition, content under this tag is discouraged to be uploaded on to the site. As upscales are generated from the original file using computer alghorithms, it means that it can be done again from original file, but original file is impossible to obtain from upscale.

If you have upscales, please keep them under your personal usage scenarios. Only if the upscale is only version exsisting of the post or artists own doing, it can be accepted but will still be highly discouraged.

Resolution

Most common form of upscaling. There are several alghorithms which can be used to make image larger, most common general purpose ones are bilinear and lanczos and most popular with drawn content waifu2x.

To tell upscale from original, usually it's good idea to inspect both files. If general upscalers are used, whole image usually looks really blurry. If more advanced upscalers are used, then parts which do not have enough data look blurry, e.g. really thin line endings.

Only lossless upscale with resolution is nearest-neighbor scaling (also known as "no filter" upscaling) with whole multipliers. On the site, this is only acceptable method with pixel_(artwork), where 1:1 pixel ratio will look tiny on modern monitor resolutions, with other artwork this method will cause unwanted aliasing. All other upscales are subject for deletion if there isn't good reason for said upscale.

https://en.wikipedia.org/wiki/Image_scaling

Frame rate

Frame blending is usually common to happen if frame rates do not match when creating video and end frame rate is larger than original. Usually with this you can pause the video and have 50% change of seeing two frames on top of each other.

Another form is frame/motion interpolation, but has several other names. This means taking two exsisting frames from the video and then guessing what could happen in between them. This means that instead of seeing two frames on top of each other, there's usually slightly blurrier frames in between exsisting ones and sometimes if the prediction goes wrong (e.g. sudden high amount of movement), you can see morphed frames of two frames blend. (example: post #917295 from 0:23 onwards).
https://en.wikipedia.org/wiki/Motion_interpolation

Modern TVs usually have this technology implemented in with regular presets outside gaming mode, so usually with the models all you need to do is watch the video regularly. With PC, it's possible to use software which does this on fly:
https://www.svp-team.com/wiki/Main_Page

See also

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