Area of shapes inside image
in [Matlab]
|
From: ImageAnalyst on 7 Feb 2010 17:47 Well again, it's not word for word what I posted. You cut out this key portion: % Threshold the image to get a binary image (only 0's and 1's) of class "logical." % Method #1: using im2bw() % normalizedThresholdValue = 0.4; % In range 0 to 1. % thresholdValue = normalizedThresholdValue * max(max(originalImage)); % Gray Levels. % binaryImage = im2bw(originalImage, normalizedThresholdValue); % One way to threshold to binary % Method #2: using a logical operation. thresholdValue = 100; binaryImage = originalImage > thresholdValue; % Bright objects will be the chosen if you use >. % binaryImage = originalImage < thresholdValue; % Dark objects will be the chosen if you use <. I guess you removed that portion because you assumed that you were importing an image that was already binary (which it wasn't). So after you convert it to monochrome, you still need to do what I did above, namely threshold the image. Read the comments carefully because they say how to threshold the image to get white objects on a black background. Your objects are dark so you have to follow the comment for getting dark objects (which is commented out because in my example I had bright objects on a dark background - the opposite of you.)
From: Akshay Chaudhari on 7 Feb 2010 22:48 Thank you so much! The problems I was having make sense now, thanks to you. I really appreciate your time. Thanks for being so active on the forums. You're a beast :)
From: ImageAnalyst on 7 Feb 2010 22:56
You're welcome! |