Questions tagged [color-management]

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Is color saturation really related to light intensity?

In this article on Wikipedia, under saturation, it's written that "The purest (most saturated) color is achieved by using just one wavelength at a high intensity, such as in laser light. If the ...
xasthor's user avatar
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1 vote
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ThreeJS multicolor material

How can I have a multicolor material in ThreeJS? I'm looking for a way to have a single material and use one or more b/w masks to color the surface of the model with the same amount of colors; the ...
fudo's user avatar
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What CMFs (aka Spectral Functions) did Microsoft and HP use to develop sRGB standardized in: IEC 61966-2-1:1999?

CIE 1931 2° probably served as a basis, but which version? Published in 1999, the final specification can not have referred to CIE 2006, but cvrl.org lists several others: CIE 1931 2°, CIE 1931 2° ...
Ben McKenneby's user avatar
3 votes
2 answers
251 views

Determining input color space primaries from spectrum data

If I have an output device, for which I have a known spectrum data for each of it's primaries, I should be able to calculate the CIEXYZ of its primaries using using the integral equations together ...
JonnyRobbie's user avatar
2 votes
0 answers
101 views

What is the CMYK color profile used by pantone.com

Pantone spot colors are specified in the RGB and CMYK color models on the https://pantone.com website. For example, the Pantone 122 spot color as it appears when printed on coated paper is specified ...
Witiko's user avatar
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2 votes
0 answers
230 views

Calculating Luminance From Y'CbCr

I have a video feed generating a stream of of Y'CbCr frames (specifically 8-bit component Y'CbCr 4:2:0, luma range of 16-235, chroma range of 16-240) from which I'd like to calculate relative ...
Tricky's user avatar
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7 votes
2 answers
237 views

Why replicating the higher bits of RGB565 when converting to RGBA8888?

I have seen in some computer graphics software's code bases that sometimes the higher bits of RGB565-format image data are replicated into the lower bits when converting to higher-bit-depth format ...
wip's user avatar
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2 votes
1 answer
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Is there a way to resize an image without creating new colors in the output image?

I have been working with a file from the USGS that is a heightmap of the Moon. I resized it to 65536 x 32768 px for use as a displacement map in Blender, and turned it into tiles. Then I created tiles ...
kim holder's user avatar
2 votes
1 answer
676 views

YUV to HSV to RGB issues

As per this resource, there is an easy way to convert from YCbCr to HSV. Saturation is sqrt(Cb^2 + Cr^2). Now here is my issue. If I take pure red (1,0,0), green(0,1,0), and blue(0,0,1) colors, ...
Deepak Sharma's user avatar
6 votes
1 answer
235 views

What determines the color gamut of a display?

I’m not sure if I’m posting this question in the right area but, I’m wondering what determines the color gamut of a display? Is or hardware down to the RGB filter built into a display like a monitor ...
ohmmy's user avatar
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1 answer
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How do I use ColorSync Utility to convert between Display P3 and sRGB?

I have a Display P3 color (1, 0, 0), on a scale of 0.0 to 1.0. I want to find out what the closest color to this is in the sRGB gamut. I chose (1, 0, 0) on the right side ... ... but the left side ...
Kartick Vaddadi's user avatar
4 votes
1 answer
245 views

Pixel density / color channel depth ratio for dithered gradients

Dithering increases percieved color depth by adding a "noise" to an image on transform from high color depth (e.g. 32-bit floating point) to lower color depth (e.g. 8-bit integer). A prerequisite is ...
Andreas's user avatar
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8 votes
1 answer
3k views

Why does checkerboard pattern on a computer screen appear with a yellowish tint?

This question was originally asked on Physics, then moved to Cognitive Sciences. Consider the following image: You might want to display the image in a new page, in case it gets resized for mobile ...
IS4's user avatar
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1 vote
2 answers
2k views

Change particular color in an image

Suppose i have a image and I want to convert the portion of image that is red to blue(or any other color). One way to do this is extract red part of image using HSV or other color values and convert ...
Sandiip's user avatar
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9 votes
3 answers
558 views

Color space of MERL BRDF database?

I know that by now it might be considered as a kind of sad recurrent joke, but by chance, does anyone here has the least information about the colorspace of RGB values in the MERL BRDF measurement ...
Fabrice NEYRET's user avatar
7 votes
2 answers
171 views

Why not calibrate all display devices to sRGB?

Why do we not calibrate all devices to sRGB in the factory? The assumption is that every monitor is sRGB anyway. So why not calibrate them to that? That would make people see same color as intended on ...
joojaa's user avatar
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8 votes
2 answers
405 views

Why is the CMYK space four sided in chromaticity charts

In chromaticity charts the CMYK color space is usually four-sided. I've lately had to read quite a few charts and it suddenly dawned to me that I don't really understand why. It has just not been ...
joojaa's user avatar
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4 votes
1 answer
131 views

How is an ICC profile embedded or built into an image?

If I were to analyze or change an ICC profile embedded in an image, how should I proceed? I'd also be glad to understand how an "end-user" is able to create these with a tristimulus colorimeter or a ...
Armfoot's user avatar
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