How would I tell the orientation and direction of a moving object using OpenCV?

Asked Jul 09 '15 at 23:25

Active Jul 09 '15 at 23:25

Viewed 1,719 times

I am trying to track a moving insect and the tracking is not the hard part. I am using cv2.minAreaRect and I have tried using the angle of the rectangle as an indicator for the orientation but apparently it does not return the angle in a range of 0-360. See here for more explanation: Not sure about angle returned from minAreaRect.

I've also tried using cv2.contourArea because it can provide information about the orientation of the contours but I don't think it's going to be much of help in deciding which part of the contour is the "head".

I'm not really asking for a solid solution(if you know one, please feel free to share), it's more of a brainstorming conversation on how one would go about determining the orientation of a moving object using information from its contours, minAreaRect angle, etc.

Please feel free to chime in with your suggestions and I will try them out. Thanks you so much in advance!

edited May 23 '17 at 12:19

Community

asked Jul 09 '15 at 23:25

jpxrc

Consider the center of the rect at time t and t+1. Doesn't the vector between these two points give you orientation and direction? – Miki Jul 09 '15 at 23:39
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add images (input, detected contours, computed rects etc) and result values (orientation angles) please... – Micka Jul 10 '15 at 06:31
Further to @Micka: [ask] – boardrider Jul 10 '15 at 20:54
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Hi did you solve the problem with the direction? If yes please share it here, Thanks! – Bahramdun Adil Sep 20 '16 at 09:53

How would I tell the orientation and direction of a moving object using OpenCV?

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