Yeah, it's just fewer objects, and [pix_motion_sector] reports the % of pixels that have changed in the region. That makes it easy to set up triggers with an instance of moses. I worked on that a couple years ago and haven't really thought about it until Hans posted the link. I don't mean to hijack the thread, but right now I'm interested in getting feedback on this table info/manip extern:
http://williambrent.conflations.com/pages/research.html#tabletool I posted it on another thread earlier today and added several more functions since. Nothing that you can't do in other ways, but I think these things are useful to have easy access to: - dumping a table to a list - reporting the length of a table - offsetting (adding a constant to all values) - scaling (multiplying all values by a scalar) - curve smoothing - shifting values forward or back by index - shuffling values randomly - sorting values from low to high - sorting a sub-range of values from low to high - reversing - inverting - normalizing to a specified range - normalizing so values sum to 1.0 - copying a source table to a target table - copying a specified range of a source table to a target table - lacing alternating values from two tables into one table - table sum - table mean - table arithmetic mean - table geometric mean - table integration - table differentiation - adding two tables - subtracting two tables - multiplying two tables - dividing two tables - dot product between two tables - Euclidean distance between two tables - Manhattan distance between two tables - Pearson correlation coefficient between two tables - reporting minimum value (and its index) - reporting maximum value (and its index) - reporting the closest value in the table to a given value (and its index) - number of occurrences of a given value (and a list of their indices) - number of occurrences of a value less than a given value (and a list of their indices) - number of occurrences of a value greater than a given value (and a list of their indices) On Thu, May 13, 2010 at 7:40 PM, Mathieu Bouchard <[email protected]> wrote: > On Thu, 13 May 2010, William Brent wrote: > >> Yes - it's exactly that: an adaptation of pix_movement that lets you >> specify an area to analyze. That way you can use several instances to >> create multiple regions for triggering different events. I haven't looked >> at this in two years! I'll take a look at the helpfile and see what's >> missing/unclear. > > what's the difference between that, and using [pix_crop] and [pix_movement] > with [pix_separator] ? > > _ _ __ ___ _____ ________ _____________ _____________________ ... > | Mathieu Bouchard, Montréal, Québec. téléphone: +1.514.383.3801 -- William Brent www.williambrent.com “Great minds flock together” Conflations: conversational idiom for the 21st century www.conflations.com _______________________________________________ [email protected] mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
