How to extract curve data from such a JPEG image?

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Yihan Ma
Yihan Ma 2019-7-19
评论： Yihan Ma 2019-7-20
When I use a machine to record the ECG data, it can only save as .jpg format, just like the figure I show in the below.
But I want to extract the green line digital data. The problem is that the three green lines data are continues, I wonder if I can use some methods to extract green line data and combine them together?
YihanMa_Happy_Page2.jpg

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darova
darova 2019-7-19
Try this simple script. Like it please
We have a picture with green pixels. What we gonna do now?
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Rik
Rik 2019-7-20
Can't you convert the lines to pixel height? Then you can use the value of the last point from the first line as the offset for the second line.
Yihan Ma
Yihan Ma 2019-7-20
Got it, I can use 'impixelinfo' to chck the position of the pixels, thx!

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