Detecting a radius that has been changing during video

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Batuhan Istanbullu 2022-12-4

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https://ww2.mathworks.cn/matlabcentral/answers/1870957-detecting-a-radius-that-has-been-changing-during-video

评论： Image Analyst 2022-12-5

Hi, I just want to set a radius for my video for my finger I mean while its getting away from my camera in a video. How do I set its radius and check the radius change of the finger's tip while its moving away from the camera? Any help would be app. it,

Best Regards,

Batuhan

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Image Analyst 2022-12-5

在 MATLAB Online 中打开

track_color_in_video.zip

I guess you could use MATLAB. Like

radius = 100; % Or whatever.

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Answer 1

Image Analyst 2022-12-5

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移动：Image Analyst 2022-12-5

You have to adapt it to find the thing you're interested in. My segmentation algorithm looked for green object. Yours will undoubtedly be something different. What that might be we have no idea because you are not attaching your video or even a frame from it. Maybe you have to change it to look for flesh colored things. Or maybe you have a dark finger against a bright uniform background and you can simply convert to grayscale and threshold it.

If you have any more questions, then attach your data and code to read it in with the paperclip icon after you read this:

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In addition, see my Image Processing Tutorial in my File Exchange:

Image Analyst's File Exchange

for a basic tutorial on finding objects by intensity thresholding.