Java Utililty Methods RGB Color Convert To

List of utility methods to do RGB Color Convert To

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Description

The list of methods to do RGB Color Convert To are organized into topic(s).

Method

int[]rgb2lab(int R, int G, int B)
rgblab 
float r, g, b, X, Y, Z, fx, fy, fz, xr, yr, zr;
float Ls, as, bs;
float eps = 216.f / 24389.f;
float k = 24389.f / 27.f;
float Xr = 0.964221f; 
float Yr = 1.0f;
float Zr = 0.825211f;
r = R / 255.f; 
...
double[]rgb2luv(double[] rgb, double[] luv)
Converts color components from the CIE L*u*v* to the sRGB color space. 
double[] xyz = rgb2xyz(rgb, null);
return xyz2luv(xyz, luv);
double[]rgb2xyz(double[] RGB)
Converts from the given RGB triplet into a corresponding XYZ triplet. 
double[] xyz = new double[3];
double[] rgb = new double[3];
System.arraycopy(RGB, 0, rgb, 0, 3);
for (int i = 0; i < 3; i++) {
    if (rgb[i] > 0.04045) {
        rgb[i] = Math.pow((rgb[i] + 0.055) / 1.055, 2.4);
    } else {
        rgb[i] = rgb[i] / 12.92;
...
double[]rgb2xyz(double[] rgb, double[] xyz)
Converts color components from the sRGB to the CIE XYZ color space. 
if (xyz == null) {
    xyz = new double[rgb.length];
double[] rgbLin = new double[rgb.length];
for (int i = 0; i < rgb.length; i++) {
    if (rgb[i] <= 0.04045) {
        rgbLin[i] = rgb[i] / 12.92;
    } else {
...
int[]RGB2YCbCr(int r, int g, int b, boolean useBT601)
Convert RGB color info to YCBCr 
int[] yCbCr = new int[3];
double y, cb, cr;
if (useBT601) {
    y = r * 0.299 * 219 / 255 + g * 0.587 * 219 / 255 + b * 0.114 * 219 / 255;
    cb = -r * 0.168736 * 224 / 255 - g * 0.331264 * 224 / 255 + b * 0.5 * 224 / 255;
    cr = r * 0.5 * 224 / 255 - g * 0.418688 * 224 / 255 - b * 0.081312 * 224 / 255;
} else {
    y = r * 0.2126 * 219 / 255 + g * 0.7152 * 219 / 255 + b * 0.0722 * 219 / 255;
...
voidRGB2YCbCr(int[] rgb, float[][] Y, float[][] Cb, float[][] Cr, int imageWidth, int imageHeight)
RGBY Cb Cr 
int red, green, blue, index = 0;
for (int i = 0; i < imageHeight; i++) {
    for (int j = 0; j < imageWidth; j++) {
        red = ((rgb[index] >> 16) & 0xff);
        green = ((rgb[index] >> 8) & 0xff);
        blue = (rgb[index++] & 0xff);
        Y[i][j] = (0.299f * red + 0.587f * green + 0.114f * blue) - 128.0f;
        Cb[i][j] = -0.1687f * red - 0.3313f * green + 0.5f * blue;
...
voidrgb2yuv(float r, float g, float b, float[] yuv)
rgbyuv 
yuv[0] = .299f * r + .587f * g + .114f * b;
yuv[1] = -.14713f * r + -.28886f * g + .436f * b;
yuv[2] = .615f * r + -.51499f * g + -.10001f * b;
voidrgb565ToRGB(short pixel, byte[] rgb)
rgb To RGB 
int r = (pixel >> 11) & 0x1f;
int g = (pixel >> 5) & 0x3f;
int b = (pixel) & 0x1f;
rgb[0] = (byte) (r * 0xff / 0x1f);
rgb[1] = (byte) (g * 0xff / 0x3f);
rgb[2] = (byte) (b * 0xff / 0x1f);
intrgb8ToPixel(byte[] nrgb)
rgb To Pixel 
return ((nrgb[0] & 0xff) << 16) | ((nrgb[1] & 0xff) << 8) | (nrgb[2] & 0xff);
shortrgb8ToRgbRBXG(byte[] rgb)
rgb To Rgb RBXG 
return (short) ((((rgb[0] >> 5) & 0x7) << 12) | (((rgb[2] >> 5) & 0x7) << 8)
        | (((rgb[1] >> 5) & 0x7) << 0));