how to create rounded edges of an irregular object? I want to smoothen the corners of this object.

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Nabanita Roy
Nabanita Roy 2020-9-8
评论： Image Analyst 2020-9-27

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Image Analyst
Image Analyst 2020-9-8
You can blur the image with imfilter() or conv2():
windowSize = 21; % Bigger for more blurring.
kernel = ones(windowSize) / windowSize^2;
output = imfilter(rgbImage, kernel);
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Nabanita Roy
Nabanita Roy 2020-9-27
I have multiple same images. Is it possible to crop all the binary images in such a way that the black object will take only 40 percent of the entire image and the rest 60 percent will remain white. Thats how I want to standardize the images.
Image Analyst
Image Analyst 2020-9-27
Yes. First get the area, then divide by 0.4 to get the number of pixels in the cropped image. Then use indexing to crop it out.
mask = bwareafilt(mask, 1); % Take largest blob only.
props = regionprops(mask, 'area', 'Centroid');
imageArea = area / 0.4;
imageWidth = sqrt(imageArea);
xCentroid = props.Centroid(1);
yCentroid = props.Centroid(2);
xLeftCol = round(xCentroid - imageWidth/2);
xRightCol = round(xCentroid + imageWidth/2);
yTopRow = round(yCentroid - imageWidth/2);
yBottomRow = round(yCentroid + imageWidth/2);
output = mask(yTopRow : yBottomRow, xLeftCol : xRightCol);

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