How to Connecting nearby pixels of binary image

조회 수: 12 (최근 30일)
hussain abdelaziz
hussain abdelaziz 2021년 4월 5일
댓글: hussain abdelaziz 2021년 4월 5일
How Connecting nearby pixels of binary image. Because i need to use image region analyzer and need to the image to be as one connected pixels i have thousands of image like that i need to make all pixels connected or how to make image region analyzer as one image not parts.. I work on CT image like this which i need image region analyzer as one part
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KALYAN ACHARJYA
KALYAN ACHARJYA 2021년 4월 5일
Is this segmenattion result?
hussain abdelaziz
hussain abdelaziz 2021년 4월 5일
This a slice of CT IMAGE OF HEAD OF A DOLPHIN

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답변 (2개)

Matt J
Matt J 2021년 4월 5일
imclose() is the traditional way to close small gaps between nearby pixels.

Image Analyst
Image Analyst 2021년 4월 5일
Are there really gaps/openings there or not? If they aren't there, then it looks like you just did the segmentation improperly, like you chose a bad threshold or something. With a good threshold, you should be able to get at least the outer perimeter closed.
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Image Analyst
Image Analyst 2021년 4월 5일
It doesn't look like a binary image. It looks like a gray scale image that was thresholded to create a binary image, and then the binary image was used to mask (erase) the gray scale image outside the mask. Like
mask = grayImage > someThresholdValue;
outputImage = grayImage; % Initialize
outputImage(~mask) = 0; % Erase outside mask.
What I'm saying is that your segmentation algorithm, which might be a simple global threshold like the first line of code I gave above OR it may be something more complicated, is not doing a good job masking the image. So, did you do a global threshold? If so, try changing the threshold value. Or did you do something more sophisticated, like called imbinarize() with the adaptive (locally varying) option?
hussain abdelaziz
hussain abdelaziz 2021년 4월 5일
Yes it's gray image.
Ok I will try thank you very much

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