Questions tagged [color]

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How to properly color particles in N body sim?

In my n-body simulation I would like to color the particles in way which corresponds to the magnitude of the net force acting on them. This is so that I can confirm visually that the particles ...
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29 views

Weird glColor3f results in framebuffer objects

The code is glColor3f(1, 1, 1); gluSphere(gluq, 0.2, 10, 10); glColor3f(1, 0, 0); glTranslatef(1, 0, 0); gluSphere(gluq, 0.2, 10, 10); In short, when I draw ...
1
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38 views

Reddish tint with spectral renderer

I'm trying to implement a spectral path tracer and comparing results from my program with renders of the same scene done with pbrt and ...
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77 views

What causes this color shift?

Below are the original image and a JPEG encoded/decoded image. To my untrained eyes, cyan becomes yellow, yellow becomes magenta, and magenta becomes cyan. Obviously there's a problem with the ...
1
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0answers
85 views

Why does this edge detect show different results for the same color combinations?

I'm researching highlighting accessible color contrast via filter operations. I have a test screenshot of SRGB hex values compared with WCAG's official contrast algorithm: I converted it to its ...
0
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0answers
27 views

Custom background color

I am exporting an OpenSCAD file with OpenSCAD with: openscad model.scad -o model.png --imgsize=1920,1080 --camera 400,300,150,74,0,0,8000 I can set the image ...
0
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0answers
91 views

Sub pixel rendered white text on black background changes color when resized to a very small size

download: https://upload.wikimedia.org/wikipedia/commons/5/57/Subpixel-rendering-RGB.png The above picture is an example for sub pixel rendering. I tried resizing the image to very small size in ...
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89 views

Path tracing - Better images without Gamma correction?

So I read about tonemapping and Gamma Correction recently and have implemented it in my path tracer. For the time being I'm using Reinhard tonemapping operator as described in his paper $L_d = L_w *...