Per pixel luma data output.

deliriodelux

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

DusX

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.

deliriodelux

Thanks DusX, I will doit in processing.

MatthewH

Is this not something that could be calculated by using the difference actor, calc brightness, and some arithmetic?

DusX

@MathewH Interesting thought.. run thru dif and then use cal brightness. take the percentage and multiply by width and height.. hmm. I like.

mark

DusX is on the right track. I might use a Value Delay Line like so...