MATLAB: How to connect pixels of a binary image as shown in picture

disconnected pixels

Best Answer

I would try morphological closing and see if that gets the result you want, e.g.

img = imread('image.png');
newimg = imclose(img, strel('disk', 3));

results in:

Related Solutions

MATLAB: How to create multiple ROI in the same figure? I’d like to manually draw multiple region on an image to create a mask of the drawn regions. I attached the code to do it using ellipse that does the job for 5 region, but only last region is displayed

You put a loop and call the code the number of times you want. Just call it multiple times and save all the regions.

Refer this file exchange, may be useful: https://in.mathworks.com/matlabcentral/fileexchange/31388-multi-roi-mask-editor-class

MATLAB: Extracting a message from a picture

Note that the decoding can be achieved much more efficiently with these three lines of codes:

cat = double(imread('Cat.png'));
codedcat = double(imread('CodedCat.png'));
message = char(bin2dec(char(reshape(abs(cat - codedcat)' == 1,  8, [])' + '0'))');

This is probably even more efficient since there's no number -> char -> number conversion to compute the ascii code of each character:

message = char(sum(bsxfun(@times, reshape(abs(cat - codedcat)' == 1, 8, []), 2 .^ (7:-1:0)')));

Best Answer

Related Solutions

MATLAB: How to create multiple ROI in the same figure? I’d like to manually draw multiple region on an image to create a mask of the drawn regions. I attached the code to do it using ellipse that does the job for 5 region, but only last region is displayed

MATLAB: Extracting a message from a picture

Related Question