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3D scatterplot of an image

alexander.engineering

1–10 of 78 posts

Re: 3D scatterplot of an image

#5

This is cool, but I wonder why most of the demo images - and a lot of the images I uploaded - seem to have their colors aligned in a single plane.

Hmm, I guess someone would have thought of that, but this could probably be used for compressing images by reorienting the color axes so that one of them is perpendicular to this color plane, and then sending less information about that coordinate.

Re: 3D scatterplot of an image

#8

This is cool, but I wonder why most of the demo images - and a lot of the images I uploaded - seem to have their colors aligned in a single plane.

I'm not sure. It's hard to say because RGB is a bad representation of the color semantics anyway. Try visualizing the images in HSV/HSL/LAB space instead.

Re: 3D scatterplot of an image

#9

This is cool, but I wonder why most of the demo images - and a lot of the images I uploaded - seem to have their colors aligned in a single plane.

Hmm, I guess someone would have thought of that, but this could probably be used for compressing images by reorienting the color axes so that one of them is perpendicular to this color plane, and then sending less information about that coordinate.

https://en.wikipedia.org/wiki/YUV

Re: 3D scatterplot of an image

#10
post #4

So what's the insight behind such visualizations? Can it be used to separate photographic pictures from paintings for example?

Tons of artistic applications. I can’t think of anything this visualization gives that standard scopes in software like Nuke don’t provide, but those are not as intuitive or quick to read.

Color in image reproduction is notoriously difficult to measure by simply looking at a whole image. Much of what we perceive as color characteristics are contextually dependent. And while the characteristics may not vary, the level of contextual dependence seems to. Females are more likely to have more reliable contextually affected color perception than males.

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