Problem with RGB, CMYK Image

[Patel Chintan]

Hi, I need to convert RGB image to CMYK. I tried with different code but didn't get any success. So to verify all conversion I just tried to read Image and again creating another image with RGB only. But I am not able to generate proper image. It just creates some parts only from original image.

Here is code to read and get RGB data array. I have created a list of RGB array(of pixel).

 

BufferedImage bImage =  readImage(file);
                        List<int[]> pixelList = new ArrayList<int[]>(); 
                        
                        int colorSpaceType = bImage.getColorModel().getColorSpace().getType();
                        if( colorSpaceType == ColorSpace.TYPE_CMYK)
                        {
                        	System.out.println("is CMYK image");
                        }
                        else if(colorSpaceType == ColorSpace.TYPE_RGB)
                        {
                        	
                        	System.out.println("is RGB image");
                        	for(int x =0; x<bImage.getWidth(); x++)
                        	{
                        		for(int y=0; y>< bImage.getHeight(); y++)
                        		{
                        			int rgb = bImage.getRGB(x, y); //read Pixel
                        			int rgbArr[] = getRGBArrData(rgb); // array of length 3, R, G and B value (0-255)                        			
                        			pixelList.add(rgbArr);
                        		}
                        	}
                        }
                        else
                        {
                        	System.out.println("Other Image Type:"+colorSpaceType);
                        }
   

Here is code which I am using to re create Image from RGB array data.

 
                         ColorSpace l_cs = ColorSpace.getInstance(ColorSpace.CS_sRGB); //Modified Color Space                        
                        ComponentColorModel l_ccm = new ComponentColorModel(l_cs, false, false,
        						1, DataBuffer.TYPE_INT);
                        
                        int[] l_bandoff = {0, 1, 2};//, 3};
                        PixelInterleavedSampleModel l_sm = new PixelInterleavedSampleModel(
     						   DataBuffer.TYPE_INT,(int)bImage.getWidth(), (int)bImage.getHeight(),
     					     	   3,(int)bImage.getWidth()*3, l_bandoff);
                        
                       WritableRaster l_raster = WritableRaster.createWritableRaster(l_sm,
     							new Point(0,0));
                       int count = 0;
                      
                       for(int x =0; x<bImage.getWidth(); x++)
	                   	{
	                   		for(int y=0; y>< bImage.getHeight(); y++)
	                   		{
	                   			l_raster.setPixel(x, y, pixelList.get(count));
	                   			
	                   			count++;
	                   		}
	                   	}
                       System.out.println("count:"+count);
                       BufferedImage convertedBufferedImage = new BufferedImage(l_ccm, l_raster, false, null);


                       //Create Image File
                       File oFile = new File("c:\\cFile.jgp");
                       if(!oFile.exists())
                    	   oFile.createNewFile();

                       BufferedOutputStream bout = new BufferedOutputStream(new FileOutputStream(oFile));
                       JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(bout);
                       JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(convertedBufferedImage);
                       param.setQuality(1, false);
                       encoder.setJPEGEncodeParam(param);
                       encoder.encode(convertedBufferedImage);
   

If this works then I can try for CMYK image.
I can't understand what is going wrong with this, as I am new to image processing.


Thanks