2015-11-28 183 views
1

嗨我想從rgb轉換爲hsv,我一直在關注easyRGB.com中的算法。但不起作用,它顯示比正常情況更多的紅色。我重寫了幾次相同的算法並進行了修改,但找不到錯誤。任何想法?有算法。將RGB轉換爲HSV

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; 
} 

回答

2

1/3(2/3)的值是0,因爲你有兩個整數操作,所以結果是整過。

改爲使用1.0/3.02.0/3.0

+1

真誠感謝我的真實,愚蠢的錯誤。我不敢相信我一直在試圖解決這個問題,並沒有意識到這一點。謝謝! –