For the past couple of weeks, I have been struggling through some image capture issues and, more recently, some monitor issues. After reducing the number of scan lines I am displaying in each direction and subsequently increasing the gap between each scan line, we have good-looking intensity plots! Below is a montage of ~100 centroids (single-pixel) found in the set of horizontal scan line images and plots of their raw intensities over time (all of the frames of horizontal scan lines).
Next steps:
- I need to look at these intensities for actual centroids (not just single pixels), which means I also need to decide which threshold value to use for intensity (what constitutes as a 'lit' centroid). I'm currently thinking somewhere around ~150-200?
- The peaks are still about 10 frames wide, which may wider than we want, so maybe more spread apart scan lines will address this (and lead to fewer pictures having to be taken each time)
- Start writing code for screen mapping...