Stripes in N6's PS5520 images & supported framesizes

[darrask]

Before updating my N6, I had strong horizontal stripe patterns in the rightmost fifth of the image.

After updating the firmware (now using 5.0.0 - tip of development on 1st of April), the stripes vanished in most viewing conditions.

However, when using advanced frame differencing with WQXGA2 resolution, the horizontal stripes became visible again and the patterns would depend on the objects found in that striped region.

You can see it in these pictures:

ceiling (original):

same ceiling (frame differenced):

Note that some resolutions on the PS5520 with the N6 work while others don’t.

QHD for instance looks like this:

While other resolutions (such as QXG) yield “RuntimeError: Sensor control failed.”

Others, still, work even though they are not documented to work (see WQXGA2 above).
Happy to post to Github if useful.

[kwagyeman]

Please do not use the above FHD with the PS5520 at the moment. We will have higher reses working soon.

VGA (640x480), HD (1280x800), and FHD (1920x1080) are fine and work as advertised at 30 FPS with HDR support.

The issue is that we have to optimize performance across various DMA blocks, etc., to free up SDRAM bandwidth. This will be working after JPEG performance is maxed out and etc.