probleme with binarization my image

hi everyone please how can i remove thoses small pieces and small squares outside the finger imag

thanks for helping

Answer 1

[Sulaymon Eshkabilov]

Hi,

Here is a simple solution:

clearvars 
    DD=imread('image.bmp');
    figure(1),  imshow(DD), title('Original')
    MSK = DD > 25;
    MSK = bwareaopen(MSK, 25);
    MSK1 = imclearborder(MSK);
    figure(2)  % Compare Figure 1 and Figure 2
    imshow(MSK1), shg, title('Cleaned')
    

Good luck.

Answer 2

[Image Analyst]

Try

• imclearborder() to remove blobs touching the edge of the image.
• bwareafilt() to remove the largest blob(s) or blobs with areas in a certain range.
• bwareaopen() to remove blobs smaller than a certain area.