Thus adding red to green yields yellow. Add in some blue to that mix in equal amounts, and you get a neutral color. A minor problem is depending on how you view the color, it may not be perfectly neutral. This will depend on how your monitor or printer is calibrated.
There are interesting depths of color science we could go into from this point. I'll stop here. Grey-scale means that all values have the same intensity. Woudln't setting R,G,and B to the same value the greyscale value for each pixel get you a correct shade of gray?
Gray channel is simply repeated in all other channels. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Convert grayscale value to RGB representation? Ask Question.
Asked 12 years, 8 months ago. Active 1 year, 9 months ago. Viewed k times. Check out the Color FAQ for information on this. These values come from the standardization of RGB values that we use in our displays. Actually, according to the Color FAQ, the values you are using are outdated, as they are the values used for the original NTSC standard and not modern monitors. The "ultimate source" are the CIE circa experiments on human color perception. The spectral response of human vision is not uniform.
Experiments led to weighting of tristimulus values based on perception. Our L, M, and S cones 1 are sensitive to the light wavelengths we identify as "Red", "Green", and "Blue" respectively , which is where the tristimulus primary colors are derived. I discuss this in another answer here.
Starting a list to enumerate how different software packages do it. Here is a good CVPR paper to read as well. Intel Performance Primitives. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 12 years, 9 months ago. Active 9 months ago. Viewed k times. However, I didn't find a good reference for this on the web. What is the source of these values?
Improve this question. Palak Bansal 10 10 silver badges 25 25 bronze badges. Yes it does. And, the channels is a grayscale image because each channel has 1-byte for each pixel. You just have to take the average of three colors. Since its an RGB image, so it means that you have add r with g with b and then divide it by 3 to get your desired grayscale image.
Its done in this way. A grayscale or graylevel image is simply one in which the only colors are shades of gray. The reason for differentiating such images from any other sort of color image is that less information needs to be provided for each pixel.
SeniorCare2Share Care about seniors? It means that our average method works. But the results were not as expected. We wanted to convert the image into a grayscale, but this turned out to be a rather black image. This problem arise due to the fact, that we take average of the three colors. Since the three different colors have three different wavelength and have their own contribution in the formation of image, so we have to take average according to their contribution, not done it averagely using average method.
Right now what we are doing is this,. But in reality thats not the case.
0コメント