Waveform detection and analysis

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Hi,

I'm entirely new to OpenCV, however, to my knowledge I believe it can help me achieve the below.

I have a number of images that contain text along with waveforms for several signals. I need to be able to detect that there are waveforms in those images, where they are, and be able to extract point of interest from those waveforms. Interest points in the sense of: after how many clocks, signal what becomes active and when it becomes inactive.

Would someone please point me to which FeatureDetector feature can help me achieve this?

Thanks guys!