Capturing images of an object in motion

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AnG
AnG on 23 Apr 2014
Commented: Image Analyst on 23 Apr 2014
I am trying to acquire image of an object moving on a plane with a webcam for further image processing. Now the problem is how do I deal with the blur that the motion causes? I am planning to buy Logitech HD C270 Webcam. Will it work? Speed of the moving object is about 8-10cm/s. Camera is to be placed at a height of about 25 cm from the plane. Any other alternatives? Can I use a digital camera?

Answers (1)

Image Analyst
Image Analyst on 23 Apr 2014
You can use a short exposure time. Or you can use a flash/strobe light. Those are the two easiest options. A moving/panning camera is a more complicated option.
I think you should use a digital camera. But since you ask , you must be thinking of other options besides digital cameras, so what are those?
  2 Comments
AnG
AnG on 23 Apr 2014
Edited: AnG on 23 Apr 2014
Lightning and exposure I can manage but the problem is speed. I cannot control the speed of the object moving. So I want to know if the camera is capable enough to captur the image without blur. I was thinking of using a Sony digital camera but I don't know how to control and interface it with MATLAB. I got my phone camera working too using IP webcam but it isn't possible to maintain the connection to internet throughout the duration.
Image Analyst
Image Analyst on 23 Apr 2014
Depends on how much work you want to put into it. You could have detectors determine when your part comes by and start rotating or translating the camera and then use a really bright flash with a wide open iris and short exposure time. That's probably the best you could get. If you cannot control the speed of the part, then all you can do is what I said. But you said you had good control over the lighting and exposure time so it will definitely be possible to get a good photo. At my company we have parts flying by on the manufacturing line at incredible speeds and the vision inspection systems are able to get good images and analyze them at a rate of hundreds, of not thousands of parts per second. The faster they go, the more light you need and the shorter the exposure time to "freeze" the motion. You should get the Image Acquisition Toolbox if you expect to get good control over the camera parameters. You will also need some way to detect that your part is in position and flash your strobe lamp - perhaps the Data Acquisition Toolbox.

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