Identifying circles that have black dots in them

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AAS
AAS 2021년 2월 18일
댓글: KALYAN ACHARJYA 2021년 2월 19일
Is there any way to identify all the circles in this image and within that can we identify the circles that have black dots in them?
For example can we identify the circles in red markup that have black dots and circles in blue markup those that dont.

답변(1개)

KALYAN ACHARJYA
KALYAN ACHARJYA 2021년 2월 18일
The name of color is for human perception only. Are they absolutely black, if yes, after converting to a gray image, 0 should be a gray level? Please check, or you can check the corresponding coordinates, or 0 in all three color planes.
grayImage=rgb2gray(rgbImage);
data=grayImage==0;
imshow(data);
Next count the all disjoint white blobs.(Simple: See Morpho Operations)
If the level of black gray cannot be considered absolute black, then you can try with a slightly higher gray value.
grayImage=rgb2gray(rgbImage);
data=grayImage<=5; % Check the threshold value
imshow(data);
It is all about putting in more and more effort and achieving accurate results.
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KALYAN ACHARJYA
KALYAN ACHARJYA 2021년 2월 19일
Can you again clarify the logic "which cells to detect"?
I am expecting a clear statement for the condition (If Possible: Maths language is much better)

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