在java中将深色变为亮色

Question

我正在开发一个程序,我从图像的一部分中获取RGB值.我想去除颜色中的黑暗并使其变亮.我的工作是使用Color.RGBtoHSBI然后取亮度通道并将其设置为范围内的最高值,然后将HSB转换回RGB.但是,当我这样做时,颜色会完全改变.这是一个深红色的例子,它变成紫色,我用这个代码.

System.out.println("Before Conversion:");
System.out.println("R: " + rAvg  + "\nG :" + gAvg + "\nB :" + bAvg);
Color.RGBtoHSB(rAvg, gAvg, bAvg, hsv);

hsv[2] = 100; //Set to max value
System.out.println("H: " + hsv[0] * 360 + "\nS: " +  hsv[1] * 100 + "\nV :" + hsv[2]);

int rgb = Color.HSBtoRGB(hsv[0], hsv[1], hsv[2]);
System.out.println("After conversion");
Color color = new Color(rgb);
System.out.println("R: " + color.getRed());
System.out.println("G: " + color.getGreen());
System.out.println("B: " + color.getBlue());

输出:

Before Conversion:
R: 128
G :39
B :50
H: 352.58426
S: 69.53125
V :100.0
After conversion
R: 158
G: 126
B: 233

Answer 1

亮度hsv[2]需要是 0 到 1 之间的值。尝试以下两行代码：

    hsv[2] = 1; //Set to max value
    System.out.println("H: " + hsv[0] * 360 + "\nS: " +  hsv[1] * 100 + "\nV :" + hsv[2] * 100);