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File: JPEG_example_JPG_RIP_100.jpg
[Spoiler](81 KB, 313x234) ▶
83261
No.181963 Yeah x2 AS
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[Reply]
https://github.com/victorvde/jpeg2png

There's this rather obscure tool on github from a decade ago called "jpeg2png" that's designed to remove jpeg artifacts. I've been using it for a decade now and nothing else even comes close to it in terms of quality. Even those expensive neural network based ones are considerably less effective than this tool.

The only real flaw of it is that some images that actually do contain significant noise and are saved at low quality get smoothed out slightly. Understand though that importantly, that this is not smoothing in the sense of blurring, but reduction of the JPEG coefficients. In general, this tool does not result in any blurring. I believe the tool works by tweaking the DCT coefficients to result in the minimum noise and maximum coherence, which usually results in a result very close to the original.

The reason the smoothing happens for high noise images is presumably because it is because the solution it finds is just to tweak every DCT coefficient so it is slightly smaller to minimize the cost. I wonder if this issue could be simply fixed by detecting when most DCT coefficients decrease, and not changing them in that case. In cases where they are legitimately being decreased, the reduction in cost would be significantly higher and the changes in DCT coefficient should be pretty much evenly spread, as the errors were introduced by quantization/rounding, which is not biased.
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No.182003 Yeah x1
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that's pretty cool, honestly
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No.182179 Yeah x1
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I have used the same program for a while. I use it with cjxl a lot so images have minimal jpeg artifacting before converting to lossless or lossy jxl, which also has lossless recompression for jpegs but isn't as efficient.
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File: Hayley-Marie Coppin nude - Cashback 2006.mp4
[Spoiler](22.43 MB, 1366x582) ▶
23520104
No.182078 Yeah x6 AS
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[Reply]
:cry:😭:cry:😭:cry:😭
6 posts omitted. Click Reply to view.
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No.182118 Yeah x1
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>>182111
I mean if it's a clip from a movie that can be legally viewed and bought in America I doubt it would be deleted either way.
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No.182122 Yeah x1
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File: neko confused.png
[Spoiler](459 KB, 1400x1000) ▶
470736
you mean this isnt normal that your mom and sister etc walk around naked around young boyz?!?
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No.182131 Yeah x1
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>>182122
tis true! my sister would walk around only in her underwear at home! ヽ(´∇`)ノ
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No.182138 Yeah x1
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I just watched this movie, i hate happy endings.:angry::angry::angry: I don't think it fits. A somber melancholic ending would fit better.
I liked the beginning when it was contemplative and introspective and a bit fatalist, but then it turned into happy go lucky fun movie about success.
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No.182174 Yeah x1
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>>182138
go watch little lips. its on youtube
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File: cat.jpg
[Spoiler](374 KB, 1280x960) ▶
383852
No.182170 Yeah x1 AS
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[Reply]
kagunya if he was a cat 🐱
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No.182172 Yeah x2
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File: 0c418a862b72536333691a077490738a.gif
[Spoiler](2.99 MB, 425x430) ▶
3138097
ｷﾀ━━━(ﾟ∀ﾟ)━━━!!
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No.182173 Yeah x1
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>>182172
chubby
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File: my face.jpg
[Spoiler](115 KB, 1080x1162) ▶
118538
No.182141 Yeah x1 AS
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[Reply]
Hai~ :pata:

Your fortune: We don't know what happens next

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No.182143 +
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File: 0mRQ8ir elliot rodger.jpg
[Spoiler](211 KB, 1159x957) ▶
216464
The man, the myth, the legend. :mona2:
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No.182144 Yeah x1
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he wasn't even ugly, he could even have been popular at school
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No.182158 Yeah x1
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geek
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No.182166 Yeah x1
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>>182158
ur a fat sweaty hairy otaku nerd loser w/ pathetic chimpo :lolico:
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No.182168 Yeah x1
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Elliot Rodger needed dick and he would've been saved :happy:
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File: image.png
[Spoiler](355 KB, 500x281) ▶
364075
No.182108 + AS
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[Reply]
ｷﾀ━━━(ﾟ∀ﾟ)━━━!!
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No.182109 +
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Cheap plastic crap .. （ ´,_ゝ`）
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No.182164 +
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kawaii
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File: 1427261053513.jpg
[Spoiler](131 KB, 932x784) ▶
135142
No.182135 Yeah x1 AS
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[Reply]
ｷﾀ━━━(ﾟ∀ﾟ)━━━!!
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No.182136 +
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*fapfapfapfapfapfapfapfapfapfap*
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No.182159 +
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*FAPFAPFAPFAPFAPFAPFAPFAPFAPFAPFAPFAPFAPFAPFAPFAPFAPFAPFAPFAPFAPFAPFAPFAP* sorry you said something?
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File: cute tifa cosplay.png
[Spoiler](642 KB, 796x597) ▶
658140
No.181819 + AS
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[Reply]
post ur best cosplayz! （ ´,_ゝ`）
18 posts omitted. Click Reply to view.
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No.182043 +
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File: leia2.jpg
[Spoiler](291 KB, 1200x1151) ▶
298818
ｷﾀ━━━(ﾟ∀ﾟ)━━━!!
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No.182058 +
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File: Initial-D_Cosplay.jpg
[Spoiler](292 KB, 1024x768) ▶
299040
ｷﾀ━━━(ﾟ∀ﾟ)━━━!!
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No.182059 +
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File: comiket-83-funny-cosplayers-01.jpg
[Spoiler](105 KB, 640x478) ▶
107530
ｷﾀ━━━(ﾟ∀ﾟ)━━━!!
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No.182081 +
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File: madoka.jpeg
[Spoiler](399 KB, 1440x1920) ▶
408651
ｷﾀ━━━(ﾟ∀ﾟ)━━━!!
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No.182140 +
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File: Squall_pelato_cosplay (1).jpg
[Spoiler](32 KB, 338x450) ▶
33146
ｷﾀ━━━(ﾟ∀ﾟ)━━━!!
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File: image.jpeg
[Spoiler](43 KB, 410x404) ▶
44959
No.182093 + AS
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[Reply]
how to become a real heyrizen?
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No.182098 +
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>>182093
you'll need a letter of recommendation from the mayor
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No.182099 +
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firstly you must join kaguya's harem
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No.182100 +
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EAT THE FUCKING :waha:
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No.182102 Yeah x3
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File: nom.jpg
[Spoiler](37 KB, 378x370) ▶
38066
>>182100
mmmm
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No.182133 +
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you have to be a real rorikon
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File: bounce.gif
[Spoiler](2.66 MB, 480x480) ▶
2791101
No.181623 + AS
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[Reply]
JUMP!
BOUNCE!
DOWN!
UP!
JUMP!
2 posts omitted. Click Reply to view.
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No.181639 Yeah x1
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File: STICK.png
[Spoiler](526 KB, 998x768) ▶
539126
>>181635
I BROUGHT MY POGO STICK JUST TO SHOW HER A TRICK
SHE HAD SO MANY FRIENDS
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No.181640 +
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>>181639
LOL
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No.181680 +
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File: 1737501782350.gif
[Animated GIF][Spoiler](54 KB, 374x374) ▶
56160
>>181623
>>
No.182116 +
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File: peripetia-pogo.mp4
[Spoiler](3.29 MB, 1280x720) ▶
3449670
ｷﾀ━━━(ﾟ∀ﾟ)━━━!!
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No.182132 +
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i luv u japanese jesus
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File: owifvb.jpg
[Spoiler](46 KB, 1080x976) ▶
47964
No.182101 + AS
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[Reply]
:waha:
1 posts omitted. Click Reply to view.
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No.182104 +
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Kagunya :hokke:
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No.182105 +
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I love that we all pretend that kaguya is a cute girl and NOT a hairy 200cm middle eastern man
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No.182106 Yeah x3
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File: kaguynyaa.png
[Spoiler](184 KB, 401x802) ▶
188966
ｷﾀ━━━(ﾟ∀ﾟ)━━━!!
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No.182107 +
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>>182106
:xd:
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No.182120 +
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kaguNyaa~
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File: 01_gettyimages-74358271_wide-7479937511(…).jpg
[Spoiler](1.53 MB, 1400x787) ▶
1599624
No.182091 + AS
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[Reply]
I caught a nigra LOL
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No.182110 +
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>>182091
Free slave! :biggrin:
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File: Konachan.com - 119944 bottomless hatsun(…).jpg
[Spoiler](1.16 MB, 1200x913) ▶
1216202
No.182095 + AS
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[Reply]
Please give me some good Miku & Rin MMDs
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No.182096 +
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i really need to see more of rin in her shimapan
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No.182097 +
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shimapan shimapan
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File: tits.png
[Spoiler](3.1 MB, 2484x3680) ▶
3251613
No.181317 Yeah x1 AS
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[Reply]
:kuz:
Marked for deletion (Old)
>>
No.181319 +
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you are extremely evil for censoring the tits
i didn't think you had it in you, when i saw this thread i thought "no it can't be, SURELY anonymous didn't censor the tits, it must be a mistake, maybe someone hacked him"
I'm so disappointed by you that I can't even properly express myself

Whatever, go with God anon. I hope when we meet again you'll have become a better heyurizen :cry:
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No.181320 +
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thanks, OP!
I was at work so I didn't get promoted to customer for having TITS on my screen. (´人｀)
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No.181322 +
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File: ren.jpg
[Spoiler](51 KB, 779x646) ▶
52829
>>181319
MUAHAHAHAHAAHAHHAHA
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No.181334 Yeah x2
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File: tits2.png
[Spoiler](606 KB, 800x600) ▶
621009
:lolico:
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File: 26CW39_AS01-2604827447.jpg
[Spoiler](39 KB, 600x1125) ▶
40757
No.182015 + AS
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[Reply]
put something inside this bottle ヽ(´ー｀)ノ
2 posts omitted. Click Reply to view.
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No.182027 +
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File: images1.jpg
[Spoiler](9 KB, 275x183) ▶
9235
ｷﾀ━━━(ﾟ∀ﾟ)━━━!!
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No.182028 +
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File: images2.jpg
[Spoiler](14 KB, 260x194) ▶
14372
ｷﾀ━━━(ﾟ∀ﾟ)━━━!!
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No.182076 +
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>>182028
yum yum
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No.182080 Yeah x1
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File: imminent_IVU.jpg
[Spoiler](53 KB, 600x1125) ▶
54297
!!(・∀・)
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No.182088 +
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>imminent_IVU.jpg
poor, poor osaka ;_;
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File: 183-4298-2.jpg
[Spoiler](69 KB, 800x600) ▶
71158
No.182087 + AS
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[Reply]
Some real CP for ya - you've earned it (σ･∀･)σ
>>
No.182089 +
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File: CP.jpeg
[Spoiler](545 KB, 1600x1200) ▶
558807
CP test
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