[問題] 如何把灰階bmp圖複製暫存起來做程式運算??

[bubu19861213 (宅宇)]

我是想要做灰階bmp圖的邊緣偵測

以下是我的部分程式碼

====================================

public void run(ImageProcessor ip) {
                //將ip圖先暫存到tempImage裡面
                ImageProcessor tempImage = ip;
                int w = ip.getWidth();
                int h = ip.getHeight();

                //int[][][] arr = new int[2][2][3];
            int up,down,left,right,temp1,temp2;

            for(int y = 0;y<h;y++)
            {
                up = y-1;
                down = y+1;
                for(int x = 0;x<w;x++)
                {
                    left = x-1;
                    right = x+1;
                    int total = 0;
                    temp1 = (int)((tempImage.getPixel(left,up))+0+0
                    +0-(tempImage.getPixel(x,y))+0
                    +0+0+0);

                    if(temp1<0)
                    temp1 = -temp1;

                    temp2 = (int)(0+(tempImage.getPixel(x,up))+0
                    -(tempImage.getPixel(left,y))+0+0
                    +0+0+0);

                    if(temp2<0)
                    temp2 = -temp2;

                    total = temp1+temp2;
                    if(total>256)
                        total = 256;
                    if(total<0)
                            total = 0;
                    ip.putPixel(x, y, total);
                }
            }

        }

}

========================================

//將ip圖先暫存到tempImage裡面
ImageProcessor tempImage = ip;

這裡好像有問題

請問要怎樣把我讀取到的ip圖先複製一份放到tempImage裡面



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