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Finding the variation in movement of particular colour in series of image

Prasanna Venkatesh さんによって質問されました 2019 年 8 月 24 日
最新アクティビティ Prabhan Purwar さんによって コメントされました 2019 年 9 月 6 日
Overview:
Camera takes a picture of top view of an object (black circular disc with colour marked center - static). Each time it takes a picture of it, I need to find the variation of displacement of the center of the object.
Questions:
How to find that particular dot?
Can I find variations in micron level?
What kind of resolution of picture is needed for this requirement?
What format of picture will be easy?
Any other tips?
Thanks in advance!

  4 件のコメント

Prasanna Venkatesh 2019 年 8 月 26 日
@ Kalyan Acharjya
Sorry. It might take time. May I know why picture is needed? Is it possible to do the above?
KALYAN ACHARJYA 2019 年 8 月 27 日
Camera takes a picture of top view of an object (black circular disc with colour marked center).
Image might help to better undestand the question.
Prasanna Venkatesh 2019 年 8 月 29 日
@ Kalyan Acharjya
Ya. Sure. I will try to do it asap.

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1 件の回答

回答者: Prabhan Purwar 2019 年 8 月 27 日

Assumption: I am assuming the camera to be stationary and object moving.
You can make use of imfindcircles() function to detect the center of the circular object along with radius.
For a more detailed insight into the topic, please refer to Image Segmentation Tutorial and Detecting circular object blog linked below.

  2 件のコメント

Prasanna Venkatesh 2019 年 8 月 29 日
@ Prabhan Purwar
Thanks! But, Why would I need to find the center of circle, when it is already marked with different colour? My question is, Can I detect the motion of coloured mark in microns? What are all needed to do that.
I think 'Image segmentation' might be useful
Prabhan Purwar 2019 年 9 月 6 日
Following is a link to coloured object detection based on spectrum selection
Please attach Image, it may help to provide you a specific solution.

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