How to display an image like this:
MATLAB: Complement of an image
complementdispaly imageim2bwimageimage processingimcomplementloopproject
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Use imclearborder(bw). Here is the full demo:
clc; % Clear the command window.
fprintf('Beginning to run %s.m ...\n', mfilename);close all; % Close all figures (except those of imtool.)
imtool close all; % Close all imtool figures.
clear; % Erase all existing variables.
workspace; % Make sure the workspace panel is showing
fontSize = 15;I = imread("Suryajaya_Data2_front_ROI465.jpg");subplot(2, 2, 1);imshow(I);I = adapthisteq(I);subplot(2, 2, 2);imshow(I, []);%gmag = imgradient(I);
gmag = imfilter(I, fspecial('average',[5 5]),'replicate');L = watershed(gmag);Lrgb = label2rgb(L);se = strel('disk',50);Io = imopen(I,se);Ie = imerode(I,se);Iobr = imreconstruct(Ie,I);Ioc = imclose(Io,se);Iobrd = imdilate(Iobr,se);Iobrcbr = imreconstruct(imcomplement(Iobrd),imcomplement(Iobr));Iobrcbr = imcomplement(Iobrcbr);fgm = imregionalmax(Iobrcbr);fgm = not(fgm);I2 = labeloverlay(I,fgm);se2 = strel(ones(5,5));fgm2 = imclose(fgm,se2);fgm3 = imerode(fgm2,se2);fgm4 = bwareaopen(fgm3,4500);I3 = labeloverlay(I,fgm4);subplot(2, 2, 3);imshow(I3);bw = ~imbinarize(Iobrcbr);% Remove blobs touching the edge of the image.
bw = imclearborder(bw);% Fill any holes that might be there.
bw = imfill(bw, 'holes');% Extract only the biggest blob.
bw = bwareafilt(bw, 1);subplot(2, 2, 4);imshow(bw);fprintf('Done running %s.m ...\n', mfilename);
https://www.mathworks.com/help/images/ref/imfill.html imfill() with 'holes'
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