A simple image convolution

A simple image convolution

3Blue1Brown

11 месяцев назад

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@ryanwellence
@ryanwellence - 26.12.2023 21:08

In imagine science, modern digital sensors use this when combining RGB filtered sensors to produce the colors it originally captured

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@brandon05mn
@brandon05mn - 26.12.2023 23:04

What would I look like if you divided by 1/9 (basically mathematically undoing what you originally did), but I'm guessing the picture will not return to normal. Would it be even more blurred?

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@ministryofwrongthink6962
@ministryofwrongthink6962 - 27.12.2023 04:18

Did I learn something, or what?

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@joelmatousek1817
@joelmatousek1817 - 27.12.2023 11:23

What would happen if you multiply by a number greater than one?

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@eugenew2
@eugenew2 - 27.12.2023 20:55

This idea I had when I was a kid, could this similar idea take an image behind a diffusing filter & decode the original image?

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@4bschaum
@4bschaum - 27.12.2023 20:57

Is that what anti-aliasing does in video games?

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@RBRT02
@RBRT02 - 27.12.2023 22:13

Wht does Paint do this after you save as an image?

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@FuzzyImages
@FuzzyImages - 28.12.2023 03:30

I had to do this in cs50… the hard part though was removing the edges from counting as black

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@shadowblaze463
@shadowblaze463 - 28.12.2023 04:19

This is why blur is considered non-destructive to information

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@chr13
@chr13 - 28.12.2023 05:14

If colors are vectors, that means that you can multiply them.

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@alangfp
@alangfp - 28.12.2023 12:22

Oh so that’s how blurring an image works code-wise…. Amazing how simple it is!

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@martinhawes5647
@martinhawes5647 - 28.12.2023 17:43

Why rotated by 180?

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@hendreor.m6685
@hendreor.m6685 - 29.12.2023 00:59

So this is like how people saw the pixels on a crt?

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@doudymac
@doudymac - 29.12.2023 02:33

So when you start drinking there's all kinds of math equations going on with every pixel you see.
😁

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@agentred8732
@agentred8732 - 29.12.2023 09:36

I learned nothing

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@caezium.133
@caezium.133 - 29.12.2023 10:37

If you apply a normal distribution with its mean in the center and scale its values wrt the number of points from the center, you get a Gaussian Blur Filter. :)

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@TheSuperiorCat
@TheSuperiorCat - 30.12.2023 05:53

I thought that was how it worked :)

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@gunjanjain3126
@gunjanjain3126 - 30.12.2023 10:07

Why multiplied by 1/9 what is 1/9? Also why 3*3 matrix of 1/9?

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@fancypigeon1031
@fancypigeon1031 - 30.12.2023 17:12

Uhuh

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@user-wg6fe5uj8r
@user-wg6fe5uj8r - 30.12.2023 23:29

If you run this backwards on blurry images can you make it look like you’re “enhancing” the image?

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@rogercabo5545
@rogercabo5545 - 31.12.2023 14:51

I done this about 32 years ago on my first PC with a 256 b/w colors. the intention was to move a picture to any position between 0 and 1. No one talks about Antialiasing, but I did it already...

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@stickguy9109
@stickguy9109 - 01.01.2024 18:52

Or in short this is box blur

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@5akura
@5akura - 03.01.2024 01:14

the technique that you use is for making an image with poor resolution look better. but when the resolution is that bad like your mario, the result is not that great

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@MeMaN1029
@MeMaN1029 - 09.01.2024 06:03

Me trying to paint anything be like:

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@darkside3ng
@darkside3ng - 09.01.2024 23:01

Do have an idea about what Nintendo gonna do with you if they discover that you are using Mario image without permission?

😂😂😂😂

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@koctf3846
@koctf3846 - 12.01.2024 14:29

This is the AVERAGE BLUR, changing the values in the matrix bit you can a GAUSSIAN BLUR🎉

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@Sphyxx
@Sphyxx - 12.01.2024 17:08

So when i blur an image in photoshop this is what happens?

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@RayanMufti
@RayanMufti - 15.01.2024 17:30

How can we reverse that?

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@1nbp
@1nbp - 16.01.2024 02:18

funnily enough also learned about making images blurry like this in my computer vision course in order to differentiate image features from noise etc

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@RebekahSolWest
@RebekahSolWest - 16.01.2024 22:21

But, what is cloud gaming?

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@c0tt0nfl0w3r
@c0tt0nfl0w3r - 18.01.2024 07:44

this is what anti-aliasing is and why it sucks

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@JensenPalmer
@JensenPalmer - 18.01.2024 08:13

Is the reverse how those action movies do it when they say "Enhance!" and the picture gets less blurry?

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@neuro7594
@neuro7594 - 19.01.2024 00:34

Now... How to reverse...

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@DanielJohnson-bd1ng
@DanielJohnson-bd1ng - 19.01.2024 08:10

Vector?!
Does it allow you to commit crimes with both direction and magnitude?

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@yahyadiaa9679
@yahyadiaa9679 - 19.01.2024 18:04

Isn't this called anti ailising in video games ?

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@chimerathrawn5875
@chimerathrawn5875 - 20.01.2024 20:30

That's how a linear filter for digital images works

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@BoKWaa
@BoKWaa - 21.01.2024 04:59

>3am
>Cant sleep
why im watching this?

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@2nd-place
@2nd-place - 23.01.2024 04:44

Is the reverse of this how you unblur an image? I’ve heard that is a problem and you should never blur sensitive body…I mean items.

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@Boneless1213
@Boneless1213 - 25.01.2024 03:00

Hmm. Is there a reverse for this? Does it actually sharpen the image?

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@Kevin-gj5es
@Kevin-gj5es - 03.02.2024 09:35

What if you make a correction afterwards? Such as a color palette from the original, depending on which color from the duplicate fits best is replaced by the original color.

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@v037_
@v037_ - 09.02.2024 17:19

🗿bro flexed hard

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@kdee1428
@kdee1428 - 10.02.2024 15:41

So that's how the gaussian blur works nice

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@omriella4109
@omriella4109 - 14.02.2024 10:42

Question: is it possible to "unblur" an image, and find its original state before the convulation?

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@jithebarua7789
@jithebarua7789 - 15.02.2024 13:25

Hi

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@Henfredemars
@Henfredemars - 23.02.2024 05:38

It's also the same as multiplication in the frequency domain.

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@Kramer-tt32
@Kramer-tt32 - 26.03.2024 14:10

Iterate it, and all images turn into a gaussian.

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@lounes9777
@lounes9777 - 03.04.2024 22:45

Does it affect the luminosity of the image ?

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@theblackbaron4119
@theblackbaron4119 - 05.04.2024 00:18

Isn't that just Gaussian blur? Or would that be averaging the adjacent pixels.

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@uninstalledsoftwares6266
@uninstalledsoftwares6266 - 03.05.2024 17:05

How to do for a sharp image

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@Studio_salesmen
@Studio_salesmen - 11.11.2024 08:17

My mind is screaming DOT PRODUCT.

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