Re: adaptive filter FPGA

On Jun 14, 11:17 am, "cutemonster" <ckh...@xxxxxxxxxxx> wrote:

Yes, I tried synchronous and asynchronously to Unblank signal. There are
two problems. The first one is the noise itself with the stroke signal
and the second one is the stroke signal being drawn at the second time
doesn't being drawn at the exact position. It's like one pixel toggling
between frames.

Do you know which kind of filter fit the best in this situation?

thanks for you suggestion- Hide quoted text -

- Show quoted text -

Sounds like you capture it as live video or multiple frames. In such
case you would need to synchronize or lock the clock to a reference,
the unblank may be? Having no idea what the unblank looks like so I
can't tell how to do it, how often does the unblank recycling?

Having a good synchronized clock with low jitter is, IMHO, much easier
than doing the filter to minimize the artifact of pixels toggling
positions between frames

For the spatial noise, If I was you I would try a high order analog
filter infront of the A2D first, before doing any digital filtering

Regards,



.

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