punchik punchik wrote: > hi i making a multituouch surface with pd, i want be > able to filter the low and middle bands in the video > from my web cam. im interesting in just letting the > high images pass... > is there something like a high pass filter for > imagens?
in Gem: [pix_convolve] does spatial convolution with a square kernel. fill it with the right coefficients to produce a spatial high-pass. [pix_tIIR] does temporal filterin using an IIR-filter of settable length. fill with the right coefficients to produce a temporal high-pass. unfortunately the taps in the filter store the images only in the usual precision (e.g. RGBA32), which might yield weird results in pdp and Gridflow there are surely solutions (which i don't know; just go through the manual), for spatial filtering see [pdp_convolve] (pdp) and [#convolve] (Gridflow). pdp will work with higher precission (16bit instead of 8bit per channel), and GridFlow will even allow you to use floating point. mfa.cae. IOhannes _______________________________________________ [email protected] mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
