Measure the rate of growth of a crack from Image frames
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My experiment involves subjecting a substance to pressure that makes the substance eventually crack. The crack grows with time and pressure applied. I currently have a camera set up to take pictures at of the substance at fixed intervals.
I need to measure how fast the crack grows. How do I go about this?
Sample images can be found here - https://drive.google.com/open?id=189cv8B4rm3lhSgT6OYfI_aN0Xmqi-tYi
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Hank
el 13 de Nov. de 2019
Automating the detection of the end of the crack may be possible by cropping and binarizing the image, then detecting the left most point. It would get tricky though, especially when the device is periodically closed back up as I see in the images.
Since there aren't so many, it may be easier to loop through and use drawpoint() so the user can identify the end of the crack with the mouse. Then you can track the motion, in pixel lengths programmatically.
Its up to you to get the pix to mm scale and to figure your way around the shifting image position and focus.
I agree with Daniel and Kalyan, this sounds provincial to your research and there are some methodology problems to be answered first. Good luck.
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