Re: how to create mask NxN automatically
Christopher Barker <[email protected]>
| Newsgroups | gmane.comp.python.image |
|---|---|
| Message-ID | <[email protected]> |
On 11/18/10 8:47 AM, Chris Mitchell wrote: > Are you using numpy or doing for loops? definitely a job for numpy -- if you aren't using it, check it out. -CHB > On Thu, Nov 18, 2010 at 10:46 AM, Maxime demers<[email protected]> wrote: >> Hi everyone, >> >> I would like to hear you about the possibility to create mask of N dimension >> to "scan" an image. The aim of this mask is to check for each pixel if its >> value is between the intervals confidence of the mask's pixels or not. Im >> looking for a function that will create a mask of the desired dimension of >> the user. For instance: 3x3, 5x5, 7x7, 11x11, etc. >> >> if the scanned pixel is defined by (i,j) >> the function should put all the values of the mask NxN at the position (i,j) >> into a list. >> >> For now, I can manualy create mask of 3x3 and 5x5 by including the pixels >> (i-1,j-1) to (i+1,j+1) etc... in a list, but its getting complicated for 7x7 >> and bigger mask. >> >> Thanks for your help, its really appreciated >> >> Maxime Demers >> Geomatics and Remote Sensing >> University de Sherbrooke >> >> _______________________________________________ >> Image-SIG maillist - [email protected] >> http://mail.python.org/mailman/listinfo/image-sig >> >> > _______________________________________________ > Image-SIG maillist - [email protected] > http://mail.python.org/mailman/listinfo/image-sig -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception [email protected] _______________________________________________ Image-SIG maillist - [email protected] http://mail.python.org/mailman/listinfo/image-sig