Re: [OctDev] normxcorr2 development

2009-06-21 Thread Søren Hauberg
tor, 18 06 2009 kl. 05:52 -0700, skrev Travis Collier: > Here is a mex normxcorr2 implementation done by Daniel Eaton based on > the OpenCV code (stand alone, does not require the library). > http://www.cs.ubc.ca/~deaton/remarks_ncc.html > > I can't vouch for it, but it seems Mr Eaton (whoever he

Re: [OctDev] normxcorr2 development

2009-06-19 Thread Søren Hauberg
ons, 17 06 2009 kl. 14:35 -0700, skrev Travis Collier: > I'm computing the "sliding" (lags only in one dimension) cross > correlation of spectrograms. For many cases, the spectrograms are > quite large and the needed lag ranges are small. > These are used as a sound similarity metric and as a meth

Re: [OctDev] normxcorr2 development

2009-06-18 Thread Travis Collier
Here is a mex normxcorr2 implementation done by Daniel Eaton based on the OpenCV code (stand alone, does not require the library). http://www.cs.ubc.ca/~deaton/remarks_ncc.html I can't vouch for it, but it seems Mr Eaton (whoever he is) knows the math pretty well and likes being helpful. There i

Re: [OctDev] normxcorr2 development

2009-06-17 Thread Travis Collier
I'm computing the "sliding" (lags only in one dimension) cross correlation of spectrograms. For many cases, the spectrograms are quite large and the needed lag ranges are small. These are used as a sound similarity metric and as a method to estimate time delays (though I favor xcorrs of the actual

Re: [OctDev] normxcorr2 development

2009-06-17 Thread Peter Lanspeary
On Wed, Jun 17, 2009 at 04:37:12AM -0700, Travis Collier wrote: > Digging through the list archive, I see mention of norxcorr2 in devel. > Vikram never seemed to get a replay as to the status... and I am in > want of it too. > > I'm assuming that there is some clever application of FFTs which does

Re: [OctDev] normxcorr2 development

2009-06-17 Thread Søren Hauberg
ons, 17 06 2009 kl. 04:37 -0700, skrev Travis Collier: > Digging through the list archive, I see mention of norxcorr2 in devel. > Vikram never seemed to get a replay as to the status... and I am in > want of it too. > > I'm assuming that there is some clever application of FFTs which does > the co

[OctDev] normxcorr2 development

2009-06-17 Thread Travis Collier
Digging through the list archive, I see mention of norxcorr2 in devel. Vikram never seemed to get a replay as to the status... and I am in want of it too. I'm assuming that there is some clever application of FFTs which does the computation relatively efficiently. If not, someone please tell me.

Re: [OctDev] normxcorr2 development

2008-12-04 Thread vditya
Hello Just wondering what is the status of normxcorr2 function implementation, is it in the latest release of octave? I just faced the situation where I have need of this function. Thanks for any help. -- Vikram Søren Hauberg wrote: > > > ons, 19 03 2008 kl. 08:53 -0700, skrev George Stelle:

Re: [OctDev] normxcorr2 development

2008-03-19 Thread Søren Hauberg
ons, 19 03 2008 kl. 08:53 -0700, skrev George Stelle: > I'll be writing a normxcorr2 function such that it is compatible with the > Matlab function normxcorr2(template, A). I'll be following the equation > given by > Mathworks

[OctDev] normxcorr2 development

2008-03-19 Thread George Stelle
Hello, I'll be writing a normxcorr2 function such that it is compatible with the Matlab function normxcorr2(template, A). I'll be following the equation given by Mathworks