将 RGB 转换为 HSV
Converting RGB to HSV
您好,我想从 rgb 转换为 hsv,我一直在遵循 easyRGB.com 中的算法。但是不起作用,它显示出比正常情况下更红的颜色。我重写了几次相同的算法并进行了修改,但我找不到错误。任何的想法?有算法。
public static double[] RGB2HSV(double[] tmp){
double R = tmp[0] / 255.0;
double G = tmp[1] / 255.0;
double B = tmp[2] / 255.0;
double min = Math.min(Math.min(R, G), B);
double max = Math.max(Math.max(R, G), B);
double delta = max - min;
double H = max;
double S = max;
double V = max;
if(delta == 0){
H = 0;
S = 0;
}else{
S = delta / max;
double delR = ( ( ( max - R ) / 6 ) + ( delta / 2 ) ) / delta;
double delG = ( ( ( max - G ) / 6 ) + ( delta / 2 ) ) / delta;
double delB = ( ( ( max - B ) / 6 ) + ( delta / 2 ) ) / delta;
if(R == max){
H = delB - delG;
}else if(G == max){
H = (1/3) + delR - delB;
}else if(B == max){
H = (2/3) + delG - delR;
}
if(H < 0) H += 1;
if(H > 1) H -= 1;
}
double[] hsv = new double[3];
hsv[0] = H;
hsv[1] = S;
hsv[2] = V;
return hsv;
}
1/3
和(2/3)
的值是0
,因为你运算的是两个整数,所以结果也是整数
改用1.0 / 3.0
和2.0 / 3.0
。
您好,我想从 rgb 转换为 hsv,我一直在遵循 easyRGB.com 中的算法。但是不起作用,它显示出比正常情况下更红的颜色。我重写了几次相同的算法并进行了修改,但我找不到错误。任何的想法?有算法。
public static double[] RGB2HSV(double[] tmp){
double R = tmp[0] / 255.0;
double G = tmp[1] / 255.0;
double B = tmp[2] / 255.0;
double min = Math.min(Math.min(R, G), B);
double max = Math.max(Math.max(R, G), B);
double delta = max - min;
double H = max;
double S = max;
double V = max;
if(delta == 0){
H = 0;
S = 0;
}else{
S = delta / max;
double delR = ( ( ( max - R ) / 6 ) + ( delta / 2 ) ) / delta;
double delG = ( ( ( max - G ) / 6 ) + ( delta / 2 ) ) / delta;
double delB = ( ( ( max - B ) / 6 ) + ( delta / 2 ) ) / delta;
if(R == max){
H = delB - delG;
}else if(G == max){
H = (1/3) + delR - delB;
}else if(B == max){
H = (2/3) + delG - delR;
}
if(H < 0) H += 1;
if(H > 1) H -= 1;
}
double[] hsv = new double[3];
hsv[0] = H;
hsv[1] = S;
hsv[2] = V;
return hsv;
}
1/3
和(2/3)
的值是0
,因为你运算的是两个整数,所以结果也是整数
改用1.0 / 3.0
和2.0 / 3.0
。