Use pixel informations to create a grid on images
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I have an picture of graph paper I have to use as a reference. To be clear I have to use the grid as calibration for an acquisition sistem wich I used also to acquire the picture.
I want to get the grid of this image and superimpose it on other images that are acquired during a measurement session. Is it possible? how to do it? I was thinking to count the pixel between two lines and get the coordinates of the central pixel and make a plot on the other images using this information
Image Analyst on 23 Jan 2012
Sounds reasonable. If the image is good, threshold it and find the crossings
columns = find(grayImage(rowToExamine, :) < 100);
There are more robust ways to do it where you look at more than just one line.