As some of you may know, one of the defining features of Japanese porn is that genitals are pixelated. This might seem a little odd, considering the reputation that Japan has for being slightly on the sexually depraved side, but for decades there has been a law that requires all domestic porn to be censored. Unpixelated porn is produced, but because it’s illegal (and actually policed) it’s usually only produced by smaller studios or enterprising sole traders. Now, for the discerning porn watcher, there’s finally another solution: A depixelation machine!

Depixelation is a topic that’s particularly close to ExtremeTech’s heart — not because of porn, you understand, but because of 8-bit art. To this day, an 8-bit depixelation algorithm developed by Microsoft Research was one of the site’s most popular stories of all time. Given how new technologies are nearly always first adopted by the gaming and sex industries, we’re actually rather surprised that it took this long for depixelation machines so long to appear. (And yes, I’m as curious as you about whether these machines could be used to more effectively upscale your old NES games. I’ve emailed one of the machine makers to ask for a review unit, and hope to report back with my findings soon.)

The devices, called mosaic removal machines (モザイク除去機, mozaiku jyokyo-ki), essentially consist of a video pass-through box with a bunch of knobs on. Sadly, there don’t appear to be any photos of what’s inside these boxes, but given that the boxes sport composite and coaxial input/output, we’re probably not talking about hyper-advanced tech. Going by the labels, it seems you get a targeting reticule that depixelates everything beneath it. It doesn’t appear to automatically target the pixelated regions; instead, you have to move a little joystick around and twiddle a “zoom” knob to match the size of the genital in question. (Read: Just how big are porn sites?)

Using the top best censor remover, such as 🌎 Remove logo Now, you will restore your video to its original version. The software replaces the censored or blur part with intelligently generated texture to fill the space left without leaving any visible residues. Sometime back, I referred my best friend to this censor remover. The step-by-step guide below will help you to clear your personal computer from adware that opens various Adult ads or redirects the Google Chrome, Firefox, IE or Edge to unwanted Adult sites. Technically, the adware is not a virus, but it does bad things, it can show a lot of pop-up ads including Adult ads.

According to Kotaku, there is a mass debate over whether these machines actually work. (Kotaku also says that Japanese porn is painstakingly censored by hand, earning the highly skilled laborers $15 per hour.) Scientifically speaking, it depends on how the original censorship mosaic is produced. Similar to how Photoshop can de-blur photos if it can work out what camera movement caused the blur, if the pixelation algorithm is known, it might be possible to rebuild the original image. Ultimately, though, the main problem with pixelation is that you can’t recreate data that doesn’t exist; if you imagine that each censored pixel has been replaced by a block of 32×32 pixels, there is no way to recover all 1024 pixels. At best, by analyzing its neighbours and using some other more complex methods, you might get a handful of pixels that are the correct color — at worst, you’ll get just a single pixel of the correct color. So, while this machine might unscramble the mosaic, it won’t miraculously restore the genitals to their original high-definition glory. One Japanese website (which doesn’t contain nudity but isn’t work-safe) claims the de-mosaic device costs almost $900; I really hope that isn’t the case.

Get VirtualDub and Video Enhancer. Open your video in VirtualDub, zoom in your video and measure the size of squares in mosaiced part. Let's call this number N. In example above each square is 4x4 pixels, so N=4. Apply resize filter, make new size N times smaller (so 360x288 video from example would become 90x72) and choose bilinear method. Let us see in detail how to use this software to remove censor box from images: Option 1. Remove Censored Parts from Photos. Step 1: Open the censored image in Photoshop by using the “Open Image” option located on the top left corner of the program interface. Step 2: Now, move the cursor to the “Action” menu and choose “Edit” option.

As I wrote this story, another possible solution came to mind: Genital replacement. Rather than trying to salvage what little detail is left, it should be possible to write some software that removes the pixelated region, and then splices in a matching organ from a database of porn. It obviously wouldn’t match perfectly, but it would be easy enough to match skin tone, and perhaps a few other features.

The other option, of course, is that Japanese porn watchers should just start appending “uncensored” to their BitTorrent searches.

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