Hi, I'm a newbie in R world. I would like to develop an application that extract contour from objects of an image. - Is R able to manage raster data (i.e., images) ? - Is there a specific package in change of such management ? I'm specificaly interest in the Canny filter. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Emmanuel POIZOT CNAM/INTECHMER B.P. 324 50103 Cherbourg Cedex T?l : 33 (0)2 33 88 73 42 Fax : 33 (0)2 33 88 73 39 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
Hi, Maybe you should look at these packages (in R): sgeostat geoR And you should look too in: http://grass.itc.it (an open GIS with R links) Hope this helps Antonio Rodr?guez ----- Mensaje Original ----- De: Poizot Emmanuel <poizot at cnam.fr> Fecha: Martes, Mayo 14, 2002 8:12 am Asunto: [R] Raster management data> > Hi, > I'm a newbie in R world. > I would like to develop an application that extract contour from > objects of > an image. > - Is R able to manage raster data (i.e., images) ? > - Is there a specific package in change of such management ? > I'm specificaly interest in the Canny filter. > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > Emmanuel POIZOT > CNAM/INTECHMER > B.P. 324 > 50103 Cherbourg Cedex > T?l : 33 (0)2 33 88 73 42 > Fax : 33 (0)2 33 88 73 39 > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- > .-.-.-.-.-.- > r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R- > FAQ.htmlSend "info", "help", or "[un]subscribe" > (in the "body", not the subject !) To: r-help- >request at stat.math.ethz.ch_._._._._._._._._._._._._._._._._._._._._._._. _._._._._._._._._._._._._._._._._>-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
R is not a very heavy duty image processing program, but the pixmap library have some aplications to use .ppm .pgm as matrix images, so you can manipulate them in numeric processes. I use R for some small image processing and it works fine for teaching objectives. (Walsh transform, fft, Low pass filter, High pass filters (Lapplace), etc) with images not bigger that 768*768. Hope will help. Kenneth Poizot Emmanuel wrote:>Hi, >I'm a newbie in R world. >I would like to develop an application that extract contour from objects of >an image. >- Is R able to manage raster data (i.e., images) ? >- Is there a specific package in change of such management ? >I'm specificaly interest in the Canny filter. > >~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >Emmanuel POIZOT >CNAM/INTECHMER >B.P. 324 >50103 Cherbourg Cedex >T?l : 33 (0)2 33 88 73 42 >Fax : 33 (0)2 33 88 73 39 >~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- >r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html >Send "info", "help", or "[un]subscribe" >(in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch >_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._ > >-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._