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/sci/ - Science & Math

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File: 1003 KB, 800x800, maze_distortions.png [View same] [iqdb] [saucenao] [google]
5420206 No.5420206 [Reply] [Original]

Hi /sci/.

I have a picture of a huge, 800x800 maze. When I view it in an image viewing program and start resizing the window, this starts to happen (see pic). What is this effect called and why does it happen? I know it's got something to do with rendering but I'm curious what exactly is going on. I had an idea that this effect might perhaps be turned into a noise generator of sorts.

Top left is how the should look like when sized down, the other versions are anomalies that appear when I resize the window about.

>> No.5420216

And this is the original picture containing the 800x800 maze:

http://imgur.com/hUvfJ

(I can't post it here due to huge resolution).

>> No.5420219 [DELETED] 

/x/

>> No.5420221

This doesn't even belong on /sci/
https://en.wikipedia.org/wiki/Image_scaling

>> No.5420226

>>5420221
He's trolling, like always.

>> No.5420230
File: 17 KB, 367x388, bfdghf.jpg [View same] [iqdb] [saucenao] [google]
5420230

>>5420221
If you're trying to sound smart you just failed.

>> No.5420279

It's call aliasing.

>> No.5420280

>>5420206
it's called Aliasing. mathematically, it comes out of Fourier theory and Fourier transforms. what is happening when you rescale the image is that the computer has to turn adjacent pixels into a single pixel, so it has to choose a gray scale value somehow based on the values of the individual pixels. it could average the shades of the individuals, for example. it is not random and there are many ways to do it.

>> No.5420295
File: 440 KB, 1024x768, abcd234.jpg [View same] [iqdb] [saucenao] [google]
5420295

you wouldn't really get random noise since it's pretty predictable (moire patterns)
these are generally an unwanted artifact but they're also kind of cool. i made a moire pattern generator in opengl along time ago

>> No.5420362

>>5420279
>>5420280
>>5420295
Thanks.

>> No.5420370
File: 6 KB, 1920x1080, Pattern lines wallpaper.png [View same] [iqdb] [saucenao] [google]
5420370

view it in fullscreen for the full effect

>> No.5420379

>>5420370
Holy fuck.

>> No.5420389

>>5420370
>mfw pinch to zoom
>mfw I have no face

>> No.5420404

>>5420370
>computer screen turns green
>all I can see is green and red

fuck. my eyes

>> No.5420407

>>5420370
> rapidly turn your eyes left and right for 15 seconds
> look at something else
> everything looks like carpet