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I have a binary image and want to find the area of white in the image

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MJ Thangaraj
MJ Thangaraj 2016년 3월 8일
댓글: Image Analyst 2016년 3월 8일
I used rgb2gray(), im2bw and I have a Binary Image all is to find the area of the white portion

답변 (1개)

Image Analyst
Image Analyst 2016년 3월 8일
There are 3 ways
area1 = bwarea(binaryImage)
area2 = sum(binaryImage(:))
measurements = regionprops(logical(binaryImage), 'Area');
area3 = sum([measurements.Area])
The first one uses a different algorithm than the other two and will give different results depending on the shape of the boundary. The second two are just pixel counting.
  댓글 수: 2
MJ Thangaraj
MJ Thangaraj 2016년 3월 8일
But the Answer is in Pixels.What should I do to get it in cm2 or some other world units?
Image Analyst
Image Analyst 2016년 3월 8일
See my attached spatial calibration demo. If that answers all your questions, can you mark it as Accepted?

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