how to remove object that contain more than X% black pixels
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i have some roi and i want to remove roi that has more then 90% black pixels how can i do that???
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Image Analyst
2014년 12월 26일
편집: Image Analyst
2014년 12월 26일
Is your ROI in the form of a binary image? Are there multiple regions in that binary image? Just call regionprops and find blobs where the (FilledArea - Area) / FilledArea > 0.1.
labeledImage = bwlabel(binaryImage);
measurements = regionprops(labeledImage, 'FilledArea', 'Area');
allAreas = [measurements.Area];
allFilledAreas = [measurements.FilledArea];
darkRatios = (allFilledAreas - allAreas) / allFilledAreas;
darkIndexes = find(darkRatios > 0.1);
newLabeledImage = ismember(labeledImage, darkIndexes);
% Relabel
labeledImage = bwlabel(newLabeledImage > 0);
% Measure again with new blobs.
measurements = regionprops(labeledImage, 'FilledArea', 'Area');
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Image Analyst
2014년 12월 27일
It's only 9 lines of code, that do what you asked for.
If you really wanted OCR instead, then you should have said so initially and posted your image.
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