Ejemplo n.º 1
0
    public int[] doContrast(int[] pix, int iw, int ih, double contrast)
    {    
		ColorModel cm = ColorModel.getRGBdefault();
		int r, g, b;
		for(int i = 0; i < iw*ih; i++)	
		{			
			r = (int) (contrast>=0?cm.getRed(pix[i]) + (255-cm.getRed(pix[i]))*contrast:
				cm.getRed(pix[i]) + cm.getRed(pix[i])*contrast);
			g = (int) (contrast>=0?cm.getGreen(pix[i]) + (255-cm.getGreen(pix[i]))*contrast:
				cm.getGreen(pix[i]) + cm.getGreen(pix[i])*contrast);
			b = (int) (contrast>=0?cm.getBlue(pix[i]) + (255-cm.getBlue(pix[i]))*contrast:
				cm.getBlue(pix[i]) + cm.getBlue(pix[i])*contrast);
	
			pix[i] = 255 << 24|r << 16|g << 8|b;
			
		}
		System.out.println("contrast is: " + contrast);
		return pix;
	}	
Ejemplo n.º 2
0
 public int filterRGB(int x, int y, int rgb) {
   int R, G, B, color;
   ColorModel cm = ColorModel.getRGBdefault();
   if (x == -1) ;
   R = cm.getRed(rgb) & 0xff;
   G = cm.getGreen(rgb) & 0xff;
   B = cm.getBlue(rgb) & 0xff;
   if (R >= 100 && G >= 100 && B >= 100) color = 0xffffffff;
   else color = 0xff000000;
   return color;
 }
Ejemplo n.º 3
0
  public static void main(String args[]) {
    ColorModel cm =
        new ColorModel(32) {
          public int getAlpha(int pixel) {
            return 255;
          }

          public int getBlue(int pixel) {
            return 255;
          }

          public int getGreen(int pixel) {
            return 255;
          }

          public int getRed(int pixel) {
            return 255;
          }
        };

    cm.hasAlpha();
    cm.isAlphaPremultiplied();
    cm.getTransferType();
    cm.getPixelSize();
    cm.getComponentSize();
    cm.getComponentSize();
    cm.getTransparency();
    cm.getNumComponents();
    cm.getNumColorComponents();
    cm.getRed(20);
    cm.getGreen(20);
    cm.getBlue(20);
    cm.getAlpha(20);
    cm.getRGB(20);
    cm.isAlphaPremultiplied();
    cm.isAlphaPremultiplied();

    cm = ColorModel.getRGBdefault();
  }
Ejemplo n.º 4
0
  // ///////////////////////////////////////////////////////////////
  // 双线性内插值算法
  // 参数:img:要缩放的Image对象
  // dstW:目标图像宽
  // dstH:目标图像高
  // comp:组件参数,比如Applet
  //
  // 公式:f(i+u,j+v) = (1-u)(1-v)f(i,j) + (1-u)vf(i,j+1) + u(1-v)f(i+1,j) +
  // uvf(i+1,j+1)
  //
  // ///////////////////////////////////////////////////////////////
  public static Image doubleLinearScale(Image img, int dstW, int dstH) {
    OperateImage OI = new OperateImage();
    Image imgTemp;
    int[] scaled, src;
    int srcW, srcH;
    int R, G, B;
    double widthFactor, heightFactor, tempX, tempY;
    // double srcX_float = 0.0, srcY_float = 0.0;// 坐标的小数部分
    // int srcX_int = 0, srcY_int = 0;// 坐标的整数部分
    src = OI.takeImg(img, img.getWidth(null), img.getHeight(null));
    ColorModel cm = ColorModel.getRGBdefault();
    for (int j = 0; j < src.length; j++) {
      R = cm.getRed(src[j]);
      G = cm.getGreen(src[j]);
      B = cm.getBlue(src[j]);
      if (R >= 200 && G >= 200 && B >= 200) src[j] = 0xffffffff;
      else src[j] = 0xff000000;
    }
    scaled = new int[dstW * dstH]; // 存放缩放后的图片
    srcW = img.getWidth(null);
    srcH = img.getHeight(null);

    widthFactor = srcW / (dstW + 0.0);
    // System.out.println("widthFactor:"+widthFactor);
    heightFactor = srcH / (dstH + 0.0);
    // System.out.println("heightFactor:"+heightFactor);
    for (int a = 0; a < dstH; a++)
      for (int b = 0; b < dstW; b++) {
        tempX = b * widthFactor;
        tempY = a * heightFactor;
        scaled[a * dstW + b] = getDestPixle(src, srcW, srcH, tempX, tempY);
      }
    // System.out.println("双线性内插值算法完成!");
    imgTemp = OI.madeImg(scaled, dstW, dstH);
    ImageFilter filter = new BWFilter();
    return Toolkit.getDefaultToolkit()
        .createImage(new FilteredImageSource(imgTemp.getSource(), filter));
    // return imgTemp;
  }
Ejemplo n.º 5
0
  /**
   * PS see http://astronomy.swin.edu.au/~pbourke/geomformats/postscript/ Java
   * http://show.docjava.com:8086/book/cgij/doc/ip/graphics/SimpleImageFrame.java.html
   */
  public boolean drawImage(
      Image img, int x, int y, int width, int height, Color bgcolor, ImageObserver observer) {
    try {
      // get data from image
      int[] pixels = new int[width * height];
      PixelGrabber grabber = new PixelGrabber(img, 0, 0, width, height, pixels, 0, width);
      grabber.grabPixels();
      ColorModel model = ColorModel.getRGBdefault();

      // print data to ps
      m_printstream.println("gsave");
      m_printstream.println(
          xTransform(xScale(x)) + " " + (yTransform(yScale(y)) - yScale(height)) + " translate");
      m_printstream.println(xScale(width) + " " + yScale(height) + " scale");
      m_printstream.println(
          width + " " + height + " " + "8" + " [" + width + " 0 0 " + (-height) + " 0 " + height
              + "]");
      m_printstream.println("{<");

      int index;
      for (int i = 0; i < height; i++) {
        for (int j = 0; j < width; j++) {
          index = i * width + j;
          m_printstream.print(toHex(model.getRed(pixels[index])));
          m_printstream.print(toHex(model.getGreen(pixels[index])));
          m_printstream.print(toHex(model.getBlue(pixels[index])));
        }
        m_printstream.println();
      }

      m_printstream.println(">}");
      m_printstream.println("false 3 colorimage");
      m_printstream.println("grestore");
      return true;
    } catch (Exception e) {
      e.printStackTrace();
      return false;
    }
  }