Applying a ConvolveOp many times....

Question

Hi!
i have implemented some ConvolveOp in my app (Sharpen, Blur, Edge Detect).
But the problem is that if i press one of the three buttons (eg. blur button), then if i try pressing another one after it to apply another filter (eg. sharpen) this filter will return an error saying that
"src image cannot be the same as dst image".
This method creates the BufferedImages:
    public void createBufferedImage()
        mBufferedImage = new BufferedImage(image.getWidth(this),
                                           image.getHeight(this),
                                           BufferedImage.TYPE_INT_RGB);
        g2 = mBufferedImage.createGraphics();
        g2.drawImage(image, 0, 0, this);
          //--For Sharpen, Blur and Edge Detect Functions:------
          /*biSrc = new BufferedImage(image.getWidth(this),
                                          image.getHeight(this),
                                          BufferedImage.TYPE_INT_RGB);
        big = biSrc.createGraphics();
        big.drawImage(image, 0, 0, this);*/
          biSrc = mBufferedImage;
          biDest = new BufferedImage(image.getWidth(this),
                                           image.getHeight(this),
                                           BufferedImage.TYPE_INT_RGB);
    }These are my filter methods:
    public void sharpen()
          biSrc = mBufferedImage;
        // Define the kernel data which is basically the
        // Sharpening mask.
        float data[] = {-1.0f, -1.0f, -1.0f,
                        -1.0f,  9.0f, -1.0f,
                        -1.0f, -1.0f, -1.0f};
        Kernel kernel = new Kernel(3, 3, data);
        ConvolveOp convolve = new ConvolveOp(kernel,
                                             ConvolveOp.EDGE_NO_OP,
                                             null);
        convolve.filter(biSrc, biDest);
        mBufferedImage = biDest;
    public void blur()
          biSrc = mBufferedImage;
        float data[] = {0.0625f, 0.125f, 0.0625f,
                        0.125f,  0.25f,  0.125f,
                        0.0625f, 0.125f, 0.0625f};
        Kernel kernel = new Kernel(3, 3, data);
        ConvolveOp convolve = new ConvolveOp(kernel,
                                             ConvolveOp.EDGE_NO_OP,
                                             null);
        convolve.filter(biSrc, biDest);
        mBufferedImage = biDest;
    public void edgeDetect()
          biSrc = mBufferedImage;
        // Prewitt's  horizontal convolution mask
        float data[] = {1.0f, 0.0f, -1.0f,
                        1.0f, 0.0f, -1.0f,
                        1.0f, 0.0f, -1.0f};
        Kernel kernel = new Kernel(3, 3, data);
        ConvolveOp convolve = new ConvolveOp(kernel,
                                             ConvolveOp.EDGE_NO_OP,
                                             null);
        convolve.filter(biSrc, biDest);
        mBufferedImage = biDest;
    }And this is how i call these methods from my actionPreformed():
          else if(obj == sharpenButton)
               displayPanel.createUndo();
               displayPanel.sharpen();
               displayPanel.repaint();
          else if(obj == blurButton)
               displayPanel.createUndo();
               displayPanel.blur();
               displayPanel.repaint();
          else if(obj == edgeDetectButton)
               displayPanel.createUndo();
               displayPanel.edgeDetect();
               displayPanel.repaint();
          }Is there anyway around this problem???
Ideally i would like to apply as many ConvolveOps as possibly on top of each other, is this possible?
Thanks for your help!
Claire
x

Answer 1

Someone please help me! :)