Getting measures from some ares in an image by a mask

Posted by luckyluke on Nov 19, 2014; 9:48am
URL: http://imagej.273.s1.nabble.com/Getting-measures-from-some-ares-in-an-image-by-a-mask-tp5010537.html

Hi ImageJ developers,

I am trying to get some measures ( as specified and set measurements) on an color image however  on its specific area defined by another mask images.

I am trying to do that by java codes..actually, i try to do this in image J by doing particle analyzer on my mask image then adding this to ROI manger and then do measures in ROI manger when set measure are redirected to my main image.

I have written a piece  of code but the counter below returns me 0..I am new to imageJ so I appreciate any help so I can write this program..


This is the piece of my code but i don't get any result

==========
        File f = new File(Test.class.getResource("/IMD002.bmp").toURI());
        File f1 = new File(Test.class.getResource("/IMD002_R1_Label4.bmp").toURI());
        ColorProcessor image = new ColorProcessor(ImageIO.read(f));
        //ByteProcessor mask = new ByteProcessor(ImageIO.read(f1));
        ColorProcessor maskI=new ColorProcessor(ImageIO.read(f1));
        ImagePlus imP=new ImagePlus("tt",maskI);      
        IJ.run(imP,"8-bit", "");//conveting the mask ti 8 bit image
        ResultsTable rt=new ResultsTable();
       
        ParticleAnalyzer pt=new  ParticleAnalyzer
        (ParticleAnalyzer.ADD_TO_MANAGER+ParticleAnalyzer.CLEAR_WORKSHEET,
        ij.measure.Measurements.AREA+ij.measure.Measurements.MEAN,
        rt, 1, 1000, 1, 1000);
       
         
        ImagePlus img=new ImagePlus();  
        img.setProcessor(image);      
        RoiManager roi=RoiManager.getInstance();
        pt.setRoiManager(roi);      
        ij.plugin.filter.Analyzer.setRedirectImage(img);      
        pt.analyze(imP);
        ResultsTable rt1 = ij.plugin.filter.Analyzer.getResultsTable();
        int counter = rt1.getCounter();  //number of results
        System.out.println(counter);
        //if (counter==0)
          //no results, handle that error here
        int col = rt1.getColumnIndex("Area");
        for (int row=0; row<counter; row++)
        {
          double value = rt1.getValueAsDouble(col, row);
          System.out.println(value);
        }

======


Thanks any one if has any tip?

Regards