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Questions tagged [color-management]

The tag has no usage guidance.

8
votes
2answers
98 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 ...
2
votes
1answer
58 views

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 ...
2
votes
1answer
161 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, ...
7
votes
1answer
109 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 ...
2
votes
1answer
225 views

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 ...
5
votes
1answer
167 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 ...
9
votes
1answer
926 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 ...
1
vote
2answers
337 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 ...
9
votes
3answers
351 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 ...
7
votes
2answers
109 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 ...
7
votes
2answers
179 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 ...
3
votes
1answer
82 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 ...