Sorry for the late reply. Do we need to use Bluejeans for this meeting?
Here is what I have been doing so far.
Currently I was trying to establish the communication between the backend and frontend. And I wrote my proposed item into a github wiki And I made a small demo for that.
However, there are few issues I ran into.
For the first time I open the browser, I came across the violation of origin domain policy. However, if I refresh the page, there is no such problem again. I am not sure what happened.
The server I set up is only for demo purposes, and might be noticeably lagging for multiple user. (Or even completely blocked).
So, what I have done is to compute the average value for certain region. And the region is predetermined by the boundary I preset before.
If you go to the page lsst.cs.illinois.edu, and type
create_box box
read_mouse box
show_bounday
And hover the mouse on the displayed image, it will show the average pixel value.