Question

我试图模仿Photoshop＆＃34;色彩范围＆＃34;使用Processing。我在这里找到了一些有关算法的有用信息：Emulate PhotoShop's "Color Range" algorithm

但我的问题是将它实现为处理草图，因为我是Java的新手。

我设法完成所有计算，但我不知道如何应用它们，例如。我想将饱和度更改为该范围内的像素。我该怎么做？

顺便说一句，这是我的代码（可能出现了问题）。

// Declaring variables
PImage img; 

void setup() {
  size(800,800);
  colorMode(HSB, 360, 100, 100);

  //making the window resizable
//  if (frame != null) {
//    frame.setResizable(true);
//  }
  img = loadImage("scanned_texture.jpg");
}


void draw() {
  loadPixels();
  img.loadPixels();
  img.resize(800,800);

  //loop through every pixel
  for (int x = 0; x < img.width; x++) {
  for (int y = 0; y < img.height; y++ ) {

    // Calculate the 1D pixel location
    int loc = x + y*img.width;

    // Get the H,S,B values from image
    float h = hue   (img.pixels[loc]);
    float s = saturation (img.pixels[loc]);
    float b = brightness  (img.pixels[loc]);;


    float Point1hue = hue(27);
    float Point1sat = saturation(50);
    float Point1bright = brightness(80);

    float Point2hue = hue(57);
    float Point2sat = saturation(80);
    float Point2bright = brightness(100);

    //distance between colors
    float distance = sqrt(pow((Point2hue - Point1hue),2) + pow((Point2sat - Point1sat),2) + pow((Point2bright - Point1bright),2));
    float percentage = distance/sqrt((255)^2+(255)^2+(255)^2);

    color c = color(h,s,b);

    //change saturation based on color range
    if (c == percentage) {
      s = +50;
    }

    pixels[loc] = c;
  }
}
updatePixels();
}

使用Processing模拟PhotoShop的“颜色范围”

0 个答案: