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Thread: How to detect brightest spot among all spots?

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    Default How to detect brightest spot among all spots?

    I am doing a project in which i need to find the coordinates of a red laser dot on a screen. The screen can be plain or the desktop can be projected on a screen. Kindly tell me how do i detect the red spot? Thank you in advance.


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    mmm.. coffee JavaPF's Avatar
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    Default Re: brightest red spot detection

    Hello BharatT,

    Take a look at this link, it may help you:

    Circular Hough Transform Demonstration
    Please use [highlight=Java] code [/highlight] tags when posting your code.
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    Default Re: brightest red spot detection

    Now i am able to track the red dot but the problem is that i get a cluster of red pixels so the tracked dots are not stable when i get the pixels from successive frames. I tried to find the pixel using the first red spot but that reduced the problem to a small extent. So kindly tell me how i can stabilize the dot across multiple frames.

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    mmm.. coffee JavaPF's Avatar
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    Default Re: brightest red spot detection

    Hello BharatT,

    I am glad you have managed to move forward. Is it possible to post your code?

    I have no experience in this what so ever and I wouldn't know where to begin!
    Hopefully another member here will be able to help you.

    If I find any new information I will post back asap.
    Please use [highlight=Java] code [/highlight] tags when posting your code.
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    Default Re: brightest red spot detection

    Hi JavaPF,
    Thank u. I have not yet put the code in an understandable format. I have used lots of comments and variables. I will put them them down properly and send it. Please send me ur mail id.

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