Forkanion
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Posts posted by Forkanion
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10 hours ago, Reptillian said:
I believe color curve would be the answer here.
Not sure if this matches. IIRC, C++ and C# are almost as fast each other. So, if euclidean distance is too slow on the C#, it's a safe bet that gmic version use binary search. Let me call @G'MIC.
From a online document:
-index Given a palette or look-up table of reference colors and a source image, the command determines for each source image pixel, the most closely matching reference color in the palette.
How do I do the colormap 0 palette maker thing you did on g'mic? I can't find where I can enter that line of code.
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8 hours ago, Reptillian said:
I have something for you. You can do 'colormap 0' in gmic.
The right image is all of the unique color found in the first image with the colormap command. I know this is a paint.net thread, but this solution is so much faster for your need and it is pretty specific. I will refer you to discuss.pixls.us if you find this is a good starting point.
Nevermind anything else, I can match colors to their closest value in the palette myself. I just need to know how to use the colormap command to single out every unique color together, like that cat image. Thanks for everything else you guys have done, I appreciate your time.
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2 minutes ago, MJW said:
Have you not paid attention to the long discussion about the difficulty of matching a huge palette in a reasonable amount of time?
I was being sent multiple solutions, all of which I wasn't sure how to do, so I thought the solution was there, I just didn't know how to use it because nobody was being elaborate enough. I've come across a 4096x4096 image which looked like it included every single color, even the grayscale. I'm trying to make an image like that, only with RGB 64 0 255 to RGB 192 0 255, including all the gray colors. Is there a plugin that does that, basically something that gives you every variation of a color range (R: 64 - 192), along with the whole grayscale version of that color range? If that can be done somehow, I can just use that feature, as well.
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1 minute ago, MJW said:
Just?
Yeah, why? Doesn't gmic have that feature?
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7 minutes ago, MJW said:
As I mentioned, there is an algorithm I describe in Fast algorithm for finding the minimum distances to a set that I believe could do the job in a reasonable time. The updated code for the "distance transform" algorithm is given in a later comment, since for some reason I couldn't update the lead comment. The "set pixels" mentioned in the algorithm correspond the the colors that are present in the palette image. The algorithm would need to be extended from two dimensions to three, to handle the three color components. I'm confident that would fairly straightforward -- it's just applying the second stage in the algorithm again in the other direction.
Once the Nearest Color table is build, the colors in the second image could be replaced just by indexing into the table and fetching the color. Each entry in the 256x256x256 table is the nearest palette color.
I'd be happy to help anyone who wants to try it, but I'm not inclined to do it myself. It seems like quite a lot of work for a very limited audience. I can't imagine why anyone would want to use a palette of 14 million color.
I actually already have the palette in the form of a .txt file, because of the "MakePalette" plugin tool, I now just need to use it as a palette for another image.
My Ultimate goal is to "purplify" this image.
the color palette I'm using actually appears to have only have 1 million unique colors, but I can't use any Paint.NET plugin to basically round up the closest purple to each of the colors you see in that image. I'm trying to convert each color to it's nearest value in those 1 million purples.
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4 minutes ago, MJW said:
I'm pretty sure the idea is that the new image contain only colors from the image used to build the palette.
Yes
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23 minutes ago, MJW said:
I kind of think the first part is pretty trivial compared to the second part.
I still don't know how to do either...
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1 minute ago, MJW said:
I thought the point was to find the nearest matching color. Finding the unique colors is pretty easy, I think. Just construct a linear bit-array of length 256x256x256. Then go through the image colors, setting the bit corresponding to (B << 16| G << 8 | R).
I'm trying to succeed at finding all unique colors. and THEN applying it as a palette, to another image.
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42 minutes ago, Reptillian said:
@MJW Could it be possible to alter clipboard or send to clipboard? I think I know how to do it in C# or I feel like I can do it though you'll beat me to it if this was a race.
3D integer array of size 256,256,256 would be int[,,] arr = new int[256,256,256]; or something like this. And then, a dynamic array of RGB color is as simple as either ColorBRGA list or the equivalent of list for integer array of size 3. After the dynamic array has been generated from the 3D integer array, the problem of @Forkanion would be solved. I however don't know what he wants to do with said palette.
@Forkanion Do you want it as a file?
Sure, expect I feel I wouldn't know how to use that since this is my first time using GIMP.
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2 hours ago, Reptillian said:
That's why I refer you to discuss.pixls.us as this is not a gmic forum. In G'MIC cli, you do '$ i image.png colormap 0' to create a palette of unique colors. There's also CLUT-mapping which allows you to map color from a image onto another image.
Where do I input this command?
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21 minutes ago, Reptillian said:
I have something for you. You can do 'colormap 0' in gmic.
The right image is all of the unique color found in the first image with the colormap command. I know this is a paint.net thread, but this solution is so much faster for your need and it is pretty specific. I will refer you to discuss.pixls.us if you find this is a good starting point.
Wow, that seems very helpful. How would I be able to use that to apply it to an image and use it as its palette?
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Converting an image into purple-scale, the palette involves colors from (respectively) RGB 64 0 255, to RGB 192 0 255, and then THAT gradient has a black fade and white fade on it, and then THAT gradient fades into gray by multiplying those colors by 256. I'd send the image here but it exceeds the limit.
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I actually managed to save it as a palette using the "MakePalette" tool, and it is a 13830KB .txt file. I just now need to use the SelectivePalette tool to apply it to another image I want to convert, it and so far it seems to really in fact be a matter of time rather than my PC or Paint.NET's program performance.
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Trying to use the selective palette plugin tool on an image with 16.74 million pixels, and around 90% of them are unique colors. My PC has a 3060ti and an i9-11900K CPU, and the program stops responding when I use the selective palette tool, but I feel like it'll work if I give it some hours. Is this possible? Is it a matter of time or my PC's ability?
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14 hours ago, Ego Eram Reputo said:
Hey there @Forkanion - Welcome to the forum
Conditional Hue & Saturation plugin is the answer.
To see how easy it is to do this type of effect, check out this post: https://forums.getpaint.net/topic/21134-how-can-i-create-a-shape-and-recolor-it/?do=findComment&comment=348884
Is there a version of this software (or even a way) to make it fade vertically? I tried angling the object to try and make the fade look diagonal when I angle it back to before, but that cuts out a good majority of the fade.
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Let's say, I want to make an american dollar bill look rainbowy. I would take a spectrum rainbow the size of the dollar bill, layer it on top of the bill, and use multiply or overlay, but that changes the saturation and brightness of the colors of the bill instead of directly converting the entire bill's hue into a rainbow. The point is, I only want the hue of every pixel of the bill to change into a rainbow gradient, not the saturation and brightness. How do I do this?
Trying to Create a Palette of 14-16 Million Colors
in Paint.NET Discussion and Questions
Posted · Edited by Forkanion
nevermind