Astro Cam

[ben_nuttall]

I've written a little script to take a scaled-down stream from the camera and display it on the LED matrix.

See https://github.com/bennuttall/astro-pi- ... tro_cam.py

Does anyone see any ways of improving the image quality? It's hard to tell how good it is, or whether it's just the low resolution.

[jamesh]

The camera/ISP is going most of the scaling down to 64x64, and that's uses a pretty good algorithm, not sure of how picamera does the scale from 64 to 8, but I suspect that its simply the resolution of the LED's is too low.

[jdb]

Maybe a windowed crop of the source image will allow more "detail" to be captured? A centred low-res image may look better once it's on the matrix.

[topshed]

I think the 8x8 pixel array is cropped from the top left hand quarter of the 64x64 image.

_________
|...X..|......|
-----------
|.......|......|
-----------

By positioning pieces of coloured card over that quadrant, I could see the LEDs change colour appropriately. After some fiddling about, the best image I managed to capture was one of the Raspberry Pi logo:



Just about recognisable...