Defect detection by image analysis - in ImageJ

Question

I am trying to detect a defect in a product with the help of image analysis and in the course, would like to use ImageJ.

Experiment - I shall mount the product on a holder and with the help of webcam, see live image. At imageJ, I select 'Straight' line selection. Defect can be on any side of product, so I would rotate the product at fixed interval, and webcam will be live all this time.

What I need to know - I need fixed number of image capture or say intensity capture. So if I rotate the product in 10 sec, want 10 intensity measurement at equal interval, and this measurement should go to excel automatically or upon click of a button.

I need to know how to capture intensity at fixed interval, record it, and send it to excel. I need to record product ID with this data.

What I have done - I have installed webcam plugin. I want to know excel connectivity, fixed time intensity capture, adding product ID in export data.

Once data goes in excel, I can calculate the defect presence by comparing max intensity out of those 10 images at each location.

I have very little knowledge of ImageJ, but I can learn some short code if needed for ImageJ etc based on my current knowledge on Excel, sql, DAX etc.