I'm planning to use a camera sensor to measure flicker from luminaries. In some environments there are many different luminaries with different flicker characteristics in the ceiling. Because of that I would like to use a cheap camera sensor to build a flicker meter that will create a heatmap of the luminaries.
I need frame rates up to about 50 kHz but the number of pixels of the image isn't very critical. Ov2640 has a throughput of 1600x1200 pixels @ 15 fps = 28.8 MPixels/sec, so given the same data rate I would like to use a cheap camera sensor to sample an image of 320x240 pixels. So if the frame rate is 50 kHz, I would typically fit 28.8e6/50e3=576 pixels in one window and then scan it for 50 000 times or so, then moving on to the next window until I have scanned the entire image.
I wish ov2640 could be used for this but from what I understand from the datasheet the frame rate doesn't depend on the window size. Does anyone know about a cheap camera sensor that can do this?