<![CDATA[Per pixel luma data output.]]>Hi all.

I need to do this. 
I have a 1280x720 B&W, 180 frames, absolute blacks, absolutes whites, ( i lot of data, i know)  animation, and i need to know how many pixels change their luminance value from frame to frame. 
Any ideas how to archive that ? 
thanks 
a
]]>https://community.troikatronix.com/topic/392/per-pixel-luma-data-outputRSS for NodeSat, 18 Apr 2026 22:46:14 GMTThu, 13 Dec 2012 10:14:11 GMT60<![CDATA[Reply to Per pixel luma data output. on Fri, 14 Dec 2012 06:07:56 GMT]]>DusX is on the right track. I might use a Value Delay Line like so... 4272fc-calc-diff-pixels.png

]]>https://community.troikatronix.com/post/5389https://community.troikatronix.com/post/5389Fri, 14 Dec 2012 06:07:56 GMT<![CDATA[Reply to Per pixel luma data output. on Fri, 16 Jan 1970 16:30:23 GMT]]>@MathewH Interesting thought.. run thru dif and then use cal brightness. take the percentage and multiply by width and height.. hmm. I like.

]]>https://community.troikatronix.com/post/5366https://community.troikatronix.com/post/5366Fri, 16 Jan 1970 16:30:23 GMT<![CDATA[Reply to Per pixel luma data output. on Thu, 13 Dec 2012 17:12:09 GMT]]>Is this not something that could be calculated by using the difference actor, calc brightness, and some arithmetic?

]]>https://community.troikatronix.com/post/5365https://community.troikatronix.com/post/5365Thu, 13 Dec 2012 17:12:09 GMT<![CDATA[Reply to Per pixel luma data output. on Fri, 16 Jan 1970 16:30:11 GMT]]>Thanks DusX, I will doit in processing.

]]>https://community.troikatronix.com/post/5364https://community.troikatronix.com/post/5364Fri, 16 Jan 1970 16:30:11 GMT<![CDATA[Reply to Per pixel luma data output. on Thu, 13 Dec 2012 11:13:00 GMT]]>Look into the SDK and write a plugin, thats my suggestion.
I have played with traversing video matrix's within Isadora, and I was limited to VERY small images.
C++ is your friends for large data sets.

]]>https://community.troikatronix.com/post/5363https://community.troikatronix.com/post/5363Thu, 13 Dec 2012 11:13:00 GMT