我已经回答了我自己的问题,以帮助未来的观众。
使用维基百科上找到的颜色公式和注释中显示的颜色公式,该功能将采用3个参数并返回最接近的颜色。
const int distinctRGB[22][3] = {{255, 255, 255},{0,0,0},{128,0,0},{255,0,0},{255, 200, 220},{170, 110, 40},{255, 150, 0},{255, 215, 180},{128, 128, 0},{255, 235, 0},{255, 250, 200},{190, 255, 0},{0, 190, 0},{170, 255, 195},{0, 0, 128},{100, 255, 255},{0, 0, 128},{67, 133, 255},{130, 0, 150},{230, 190, 255},{255, 0, 255},{128, 128, 128}};
const String distinctColors[22] = {"white","black","maroon","red","pink","brown","orange","coral","olive","yellow","beige","lime","green","mint","teal","cyan","navy","blue","purple","lavender","magenta","grey"};
String closestColor(int r,int g,int b) {
String colorReturn = "NA";
int biggestDifference = 1000;
for (int i = 0; i < 22; i++) {
if (sqrt(pow(r - distinctRGB[i][0],2) + pow(g - distinctRGB[i][1],2) + pow(b - distinctRGB[i][2],2)) < biggestDifference) {
colorReturn = distinctColors[i];
biggestDifference = sqrt(pow(r - distinctRGB[i][0],2) + pow(g - distinctRGB[i][1],2) + pow(b - distinctRGB[i][2],2));
}
}
return colorReturn;
}
此功能,为了做到式较少打字使用Math.h
。
https://en.wikipedia.org/wiki/Color_difference –
我不是专家,但也许采取差异的总和或差异的平方和的最接近的价值? – agbinfo
没有确切的答案 - 尝试创建一个感知均匀的色彩空间,让您在深水中非常迅速。但是,红色差异5倍,绿色差异9倍,蓝色差异2倍是一个好的开始。 –