How do I detect spots on tablets

Question

1.00/5 (1 vote)

See more:

I have a frame which consist of many tablets. There are spots on the tablets. I want to detect those spots which are on tablet. The spots are of random color, random shape and random size. How can i detect these spots using image processing?

What I have tried:

I have tried edge detection, histogram analysis method, blob detection method. I am not able to get accurate results.

Posted 25-Apr-24 20:59pm

01fe20bec297

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Pete O'Hanlon · Answer 1 · 2024-04-25T21:52:00

I'm going to have to make assumptions that you have circular tablets with circular spots. Off the top of my head, you would use something like HoughCircles to detect all circles in the image; once you have the list of all circles, you would look for circles inside circles; these should be your spots. If there are any circles without a containing circle, this means that either the tablet is not a circle, or the circle is a tablet without a spot. Unfortunately, you're going to have to decide which of these is the case.

Note that you could end up with situations with spots so very close together that they get missed because the minimum distance would be too small. This approach also assumes that you don't get spots inside spots inside the tablet.

Amarnath S · Answer 2 · 2024-04-29T00:29:00

Looks like you should use Particle analysis/detection within each of those tablets. Firstly, to identify the tablets, you should again use particle analysis/detection.

The open source software ImageJ has code for this - see Particle Analysis[^]

You can find source code for ImageJ (is in Java) at their site, or on Github. You'll need to examine the code which does this, and port it to the language you need.

How do I detect spots on tablets

2 solutions

Solution 1

Solution 2

Add your solution here

Preview 0