rgb

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SIMD: Why is the SSE RGB to YUV color conversion about the same speed as the c++ implementation?

I\'ve just tried to optimize an RGB to YUV420 converter. Using a lookup table yielded a speed increase, as did using fixed point arithmetic. However I was expecting the real gains using SSE instructio[详细]

2023-02-07 19:45 分类：问答
Getting pixel color in C++

I would like to get the RGB values of a pixel at different x, y coordinates on the screen. How would I go about this in C++?[详细]

2023-02-07 17:04 分类：问答
OpenGL ES texture problem, 4 duplicate columns and horizontal lines (Android)

I have a buffer of RGB (or RGBA) texture image, and I want to display it on my Android device with the following code. I use OpenGL from NDK.[详细]

2023-02-07 16:18 分类：问答
Iphone: Converting a UIImage to RGB888 and Back again

I have a requirement to convert a image to RGB888 so some effects can be performed 开发者_开发知识库on it, once it is done, I will receive the modified image, and I will then need to convert it from t[详细]

2023-02-07 08:51 分类：问答
Photoshop Gradient - where to find the RGB-Values

i have a photoshop psd-file (opened with PS-CS4) with a new design for a website and i would like to analyse the used gra开发者_StackOverflowdients. i found the layer responsible for the gradient and[详细]

2023-02-07 00:21 分类：问答
Bitwise version of finding RGB in java

I have the following method that gets a rgb value and classifies it using a smaller palette: private static int roundToNearestColor( int rgb, int nrColors )[详细]

2023-02-06 16:39 分类：问答
RGB to HSL and back, calculation problems

I\'m trying to convert RGB to HSL and I also want to convert from HSL to RGB, I have written a class for it but if I do RGB->HSL->RGB to try if it works I get a different value.[详细]

2023-02-06 09:48 分类：问答
Getting RGB array from image in C#

I\'m currently writing a C# implementation of a little program which I have written in Java. I had used 开发者_运维问答BufferedImage.getRGB(int startX, int startY, int w, int h, int[] rgbArray, int o[详细]

2023-02-06 06:15 分类：问答
need to create a webm video from RGB frames

I have an app that generates a bunch of jpgs that I need to turn into a webm video. I\'m trying to get my rgb data from the jpegs into the vpxenc sample. I can see the basic shapes from the original j[详细]

2023-02-05 21:24 分类：问答
Is there any client-side technology able to convert sRGB to CMYK through an ICC color profile?

Is there any technology available in a browser (client-side) able to convert sRGB colors to CMYK and vice versa using a specified ICC color pro开发者_运维知识库file?[详细]

2023-02-04 07:58 分类：问答