【Android图像处理】图像处理之-R&B

  将图像每个点的rgb通道值取均值就得到R&B效果。

下面是详细代码：

	//R&B
	public static Bitmap RandB(Bitmap bitmap) {
		int mBitmapWidth = 0;
		int mBitmapHeight = 0;

		mBitmapWidth = bitmap.getWidth();
		mBitmapHeight = bitmap.getHeight();

		Bitmap bmpReturn = Bitmap.createBitmap(mBitmapWidth, mBitmapHeight,
				Bitmap.Config.ARGB_8888);
		int iPixel = 0;
		for (int i = 0; i < mBitmapWidth; i++){
			for (int j = 0; j < mBitmapHeight; j++){
				int curr_color = bitmap.getPixel(i, j);

				int avg = (Color.red(curr_color) + Color.green(curr_color) + Color.blue(curr_color)) / 3;
				if (avg >= 100){
					iPixel = 255;
				}else{
					iPixel = 0;
				}
				int modif_color = Color.argb(255, iPixel, iPixel, iPixel);

				bmpReturn.setPixel(i, j, modif_color);
			}
		}
		return bmpReturn;
	}

                           效果图                                                    原图