Gradient Filter implementation on FPGA : Part 2 Implementing gradient Filter

RE: Gradient Filter implementation on FPGA : Part 2 Implementing gradient Filter

bhaveshbytes — Wed, 06 Sep 2017 19:55:33 GMT

Great explanations! Although one thing I found confusing is that there was no standard in using row,column vs column,row notation. For example, sometimes 2,3 meant row 2, column 3 and sometimes it meant column 2, row 3. Eventually I was able to figure this out in every case. Or maybe I'm missing something? Apologies if I didn't understand.

RE: Gradient Filter implementation on FPGA : Part 2 Implementing gradient Filter

volly — Thu, 06 Apr 2017 00:39:03 GMT

[mention:baeb63da3b4b446486e4194c965df9a0:e9ed411860ed4f2ba0265705b8793d05]

Really captivating.

RE: Gradient Filter implementation on FPGA : Part 2 Implementing gradient Filter

peepo — Wed, 15 Apr 2015 16:05:35 GMT

JP,

thanks for that,

very much looking forward to worked through example,

as playing with reduced testcase code helps me develop my understanding.

the 'two implementations' seem to be:

https://github.com/jpiat/hard-cv/blob/master/hw/rtl/image/block3X3.vhd

https://github.com/jpiat/hard-cv/blob/master/hw/rtl/image/block3X3_pixel_pipeline.vhd

but what about:

https://github.com/jpiat/hard-cv/blob/master/hw/rtl/image/block3X3_pixel_pipeline_sp.vhd

might a few more inline comments be helpful?

is this warning as expected?

WARNING:PhysDesignRules:2410 - This design is using one or more 9K Block RAMs

(RAMB8BWER). 9K Block RAM initialization data, both user defined and

default, may be incorrect and should not be used. For more information,

please reference Xilinx Answer Record 39999.

Also as we discussed, it would be great to have some discussion together with reduced testcases around timing,

such as delays, crossing time domains, etc.

many thanks once again

~:"

RE: Gradient Filter implementation on FPGA : Part 2 Implementing gradient Filter

clem57 — Thu, 26 Mar 2015 15:29:16 GMT

What hardware was used to implement this algorithm?

Clem