Red-Green-Blue, a way of representing colors using the three primary lights.
Questions tagged [rgb]
65 questions
102
votes
11 answers
What sense does it make for "sharpness" to be adjustable on a monitor?
Modern monitors often have a "sharpness" setting.
But I don't really understand how it makes sense for such a setting to exist.
The software asks the monitor to display a particular pattern of 32-bit RGB values, right?
i.e. The OS might ask the…
user541686
- 23,629
60
votes
6 answers
Can a printer print white color?
I was reading about different color models, when this question hit my mind.
Can the CMYK color model generate white color?
Printers use CMYK color mode. What will happen if I try to print a white colored image (rabbit) on a black paper with my…
curious_kid
- 985
9
votes
2 answers
CMYK conversion from RGB
I have several RGB images that I have to convert to CMYK for a paper submission. I have a Photoshop Elements 9 license but it doesn't support CMYK.
I remember having tried with ImageMagick on Linux but never managed to generate a result with the…
Matteo
- 8,097
- 3
- 47
- 58
8
votes
1 answer
FFMPEG: Convert .rgb images to video
I want to create a video from .rgb files. These just contain the pixels, no header.
I'm able to cerate a video from pngs:
ffmpeg -f image2 -r 30 -i %%06d.png -vcodec huffyuv video.avi
But converting the .rgb files to png via ImageMagick (not…
DiddiZ
- 241
8
votes
1 answer
What is YCbCr444?
I just brought home my first HD monitor, a ViewSonic VX2753mh, hooked it up, and began looking at the settings. Immediately, I noticed a very distinct "washed-out" feel to the colors. Googling around, I noticed that...although there were a lot of…
Shawn Holmes
- 183
5
votes
1 answer
Converting RGB to CMYK color profile in GIMP
I want to convert an sRGB image in gimp to CMYK.
Heres what I did:
Downloaded CMYK color profiles from Adobe.
Extracted them in the icc folder (/usr/share/color/icc/)
I opened my xcf image in gimp and went to Image -> Seperate -> Seperate
I…
Bravo.I
- 51
5
votes
2 answers
Different RGB values in Digital Color Meter on MacOS
I'm using the MacOS app "Digital Color Meter" to get the RGB values from different websites. Now I want to use those colors in a Word document which I'll export to PDF. I want the colors to look exactly the same on the PDF document as it looks on…
Max
- 177
4
votes
1 answer
How do twelve-character color codes work?
Possible Duplicate:
48-bit colours?
I'm using the Xfce 4.10 desktop environment on Ubuntu 12.04. While trying to get things the way I want I came across #aaaaaaaaaaaa and #666666666666 in…
user151227
4
votes
2 answers
How to generate a pure white background video with ffmpeg?
I want to create with ffmpeg a pure white video to use it as background. I mean a video that, played in a computer, you see as white. (In the examples I will pipe the output to ffplay so you don't need to delete the video later.)
To create a 3s…
cdlvcdlv
- 1,739
3
votes
2 answers
How to get the RGB or CMYK slider options in "more colors" for Office for Mac 2011?
I have a problem with Mac Word 2011 and the fact that the 'more colors' option only brings up the color wheel and no RGB or CMYK slider options?
I have tried all weekend to remedy with a number of clean installs of 2011 (after just dragging the old…
3
votes
4 answers
Converting a series of bitmap images to grey scale
I have a series of bmp image files containing RGB encoded data. I need to convert all of these images in to their greyscale equivalents. I have considered two approaches for this, both turned out to be insufficient.
1) I tried using IrfanView and…
The Vivandiere
- 2,022
3
votes
1 answer
Is setting your card to a lower custom resolution dangerous?
I have a laptop computer with integrated Core i5 Intel HD graphics..
I want to use the vga output to connect to an old tech CRT tv that has an RGB input port, So I'm using a vga to RGB cable. I heard that the cable will not work until I set the…
user1062760
- 381
3
votes
2 answers
How to go about a motherboard's Addressable RGB LED limit?
I am planning a new build and wanted to add some Addressable RGB flare to my setup. However, according to the Asus product specs, the mobo may have a limit on how many addressable LED I can connect to the ADD RGB connector, which is 3A or 60 LEDs. …
Humble Val
- 61
2
votes
0 answers
RGB to CMYK in Gimp, what i'm doing wrong?
I'm trying to convert image from RGB to CMYK in Gimp, tried to search for answers, but couldn't fine one that would work for me, or I missed something important.
My preferences of color management are:
I have one image, that has a lot of…
2
votes
1 answer
ImageMagick is incorrectly showing some images as negatives
1 2 3 4
Image 1 is the original main file as displayed by ImageMagick display. It is showing up as a negative, but shouldn't be. When displayed using other tools, it's normal.
Image 2 is Image 4 appended to Image 1 using…
Dennis Williamson
- 111,445