Assigns a unique value to each blob in the input image in order of area.

 

function call:

[out_img1]=vsg('LabelByArea',in_img1);

 

Arguments:

in_img1 input image, 3 channel RGB, 1 channel greyscale or binary image, or DICOM image.

 

Description:

out_img1 - An image which has dimensions the same as the input image. The output image displays individual blobs which have unique greyscale values for each blob. The values increase according to the size of the blobs, i.e. the larger blobs will have larger greyscale values

 

Example:

img = imread('crown.jpg');

figure;image(img);

[out_img1]=vsg('Threshold',img,100);

[out_img1]=vsg('LabelByArea',out_img1);

h=figure;imagesc(out_img1(:,:,1));set(h,'Name','Label By Area Image');

 

Notes:

1. For DICOM images, the function operates on each slice separately.

2. For RGB images, the input on all 3 channels must be white for the area to be considered white.