Sebastien’s Status Report for 4/3/2021

Earlier this week we got together and finally integrated everything together in C++, which entailed working out some dependency management troubles with my teammates which use different linux distributions. Though probably better to figure out that stuff now than latter. Our meeting with Professor Kim earlier this week was elucidating to the fact that “draw on screen” is far more useful than “draw on camera input”. So I spent some time reading the X11 manual to see how best to get a feed of what’s being drawn onto the screen. At first glance the `getImage` function seemed to provide that functionality but unfortunately it’s quite slow, as it blocks the rendering process while copying the entire frame, including transparency. Instead it turns out it’s faster to just create a secondary consumer of X11 input from the UI and read that directly into a CV matrix. I have something that *mostly* works – the images are still a bit messed up because the field ordering in X11’s RGB image format is different than OpenCV’s. Additionally I abstracted away our input so we should be able to swap between different input sources while the application is running.