Removing contour using Marvin Framework in Java

Question

I'm using Marvin Framework to get the veins pattern, but I don't know how to remove the leaf contour

I'm doing the following : (Each function calls its corresponding Marvin Plugin.) :

    MarvinImage source = MarvinImageIO.loadImage("source.jpg");

    MarvinImage gsImage = grayscaleImage(source);

    MarvinImage blImage1 = blurEffect(gsImage.clone(),1);

    MarvinImage blImage2 = blurEffect(blImage1.clone(), 13);

    MarvinImage difi = subtract(blImage2.clone(), blImage1.clone());

    difi = invertC(difi.clone());

    difi = closingEffect(difi.clone());

    difi = MarvinColorModelConverter.binaryToRgb(difi.clone());

    difi = reduceNoise(difi.clone());

    difi = invertC(difi.clone());

    MarvinImageIO.saveImage(difi, "result.jpg");

enter image description here

I don't see how you could do this without identifying the background and preventing the background from being included when blurred. — Christian Sarofeen, May 19 '15 at 17:18

score 1 · Answer 1 · edited Sep 27 '19 at 19:11

I've developed a simple approach that may help you. It just removes the leaf borders from left to right and from right to left.

The only implication is the leaf orientation. I've rotated your output image manually. However, I think you should consider leafs in that position for better analysis.

leaf_rotated.jpg:

_{(source: sourceforge.net)}

leaf_rotated_out.jpg:

_{(source: sourceforge.net)}

SOURCE CODE:

public class LeafTest {

    public static void main(String[] args) {

        MarvinImage image = MarvinImageIO.loadImage("./res/leaf_rotated.jpg");
        removeBorder(image);
        MarvinImageIO.saveImage(image, "./res/leaf_rotated_out.jpg");
    }

    private static void removeBorder(MarvinImage image){

        // left to right
        for(int y=0; y<image.getHeight(); y++){
            for(int x=0; x<image.getWidth(); x++){

                if(image.getIntComponent0(x, y) > 10){

                    for(int x2=x; x2<image.getWidth() && x2 < x+40; x2++){
                        image.setIntColor(x2, y, 0,0,0);
                    }

                    x=0;
                    break;
                }
            }
        }

        // right to left
        for(int y=0; y<image.getHeight(); y++){
            for(int x=image.getWidth()-1; x>=0; x--){

                if(image.getIntComponent0(x, y) > 10){

                    for(int x2=x; x2>=0 && x2 > x-40; x2--){
                        image.setIntColor(x2, y, 0,0,0);
                    }

                    x=image.getWidth()-1;
                    break;
                }
            }
        }
    }
}

Yeah, i already tried this, but the goal is to remove the contour using marvin plugins... — The Eighth Ero, May 11 '15 at 22:28
What do you mean with "goal"? Is it an exercise? What is the definition of the problem? — Gabriel Archanjo, May 11 '15 at 22:32
I think we should subtract its convex hull from the black-and-white image. But I don't know how to do it correctly in this framework. — Alex Alex, May 18 '20 at 17:39

Removing contour using Marvin Framework in Java

1 Answers1