Image detect and convert white image
조회 수: 1 (최근 30일)
이전 댓글 표시
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1015940/image.png)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1015930/image.png)
I want to convert like this,,,, detect image and convert in to whole white, because i have to count white pixels
댓글 수: 0
답변 (3개)
Walter Roberson
2022년 5월 30일
filename = 'https://www.mathworks.com/matlabcentral/answers/uploaded_files/1015940/image.png';
img = imread(filename);
negmask = all(img > 240, 3);
mask = ~bwareafilt(negmask, 1);
imshow(mask)
area = nnz(mask)
댓글 수: 1
Walter Roberson
2022년 5월 30일
The 240 that I chose was arbitrary. When I filtered for any component < 240, a small number of small dots were left near the lower right of the object. The bwareafilt is used to select just the largest area, discarding the small dots.
KSSV
2022년 5월 30일
I = imread('https://in.mathworks.com/matlabcentral/answers/uploaded_files/1015935/test.png') ;
I1 = rgb2gray(I) ;
I2 = ~imbinarize(I1) ;
imshow(I2)
댓글 수: 0
참고 항목
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!