Hi Simone, I tried your suggestion, but at first I had an IllegalArgumentException: "The specified ColorModel is incompatible with the image SampleModel."
after a little try and error I came up with following solution. ImageWorker imageWorker = new ImageWorker( image ); imageWorker = imageWorker.rescaleToBytes(); imageWorker.makeColorTransparent( Color.BLACK); image = imageWorker.getRenderedImage(); rescaleToBytes was necessary because my WritableRaster is of type float. thanks! On Thu, Mar 26, 2009 at 12:48 AM, Simone Giannecchini <[email protected]> wrote: > Ciao Pete, > you can try to use the makeColorTransparentMethod on a renderedImage > obtained from a coverage and then wrap the result as a coverage again. > > Simone. > > ------------------------------------------------------- > Ing. Simone Giannecchini > GeoSolutions S.A.S. > Owner - Software Engineer > Via Carignoni 51 > 55041 Camaiore (LU) > Italy > > phone: +39 0584983027 > fax: +39 0584983027 > mob: +39 333 8128928 > > > http://www.geo-solutions.it > http://simboss.blogspot.com/ > http://www.linkedin.com/in/simonegiannecchini > > ------------------------------------------------------- > > > > On Mon, Mar 23, 2009 at 10:33 AM, Pete Ballack > <[email protected]> wrote: >> Hi Simone, >> >> thats correct. >> >> I'll take a look at the ImageWorker class, but any help is appreciated. >> >> Thanks >> >> On Mon, Mar 23, 2009 at 1:35 AM, Simone Giannecchini >> <[email protected]> wrote: >>> Dear Pete, >>> If I understood correctly your statements, you need to make exactly >>> one color transparent, right? >>> If my undertanding is correct I'll try to guide you through using the >>> ImageWorker class. >>> >>> Simone. >>> ------------------------------------------------------- >>> Ing. Simone Giannecchini >>> GeoSolutions S.A.S. >>> Owner - Software Engineer >>> Via Carignoni 51 >>> 55041 Camaiore (LU) >>> Italy >>> >>> phone: +39 0584983027 >>> fax: +39 0584983027 >>> mob: +39 333 8128928 >>> >>> >>> http://www.geo-solutions.it >>> http://simboss.blogspot.com/ >>> http://www.linkedin.com/in/simonegiannecchini >>> >>> ------------------------------------------------------- >>> >>> >>> >>> On Sat, Mar 21, 2009 at 3:56 PM, Pete Ballack >>> <[email protected]> wrote: >>>> Hi everybody, >>>> >>>> I have an Gridcoverage (grayscale) and I'm am displaying it over some >>>> other images. I successfully applied an alpha, but it covers more than >>>> just one value. What i need is too hide just one specific color index. >>>> >>>> Example: >>>> My grayscale image has values from [0,255] and when i display it I >>>> only want values from [1,255] to be shown. >>>> >>>> >>>> Does anybody have an idea how to accomplish that task? >>>> >>>> Thanks >>>> >>>> ------------------------------------------------------------------------------ >>>> Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are >>>> powering Web 2.0 with engaging, cross-platform capabilities. Quickly and >>>> easily build your RIAs with Flex Builder, the Eclipse(TM)based development >>>> software that enables intelligent coding and step-through debugging. >>>> Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com >>>> _______________________________________________ >>>> Geotools-gt2-users mailing list >>>> [email protected] >>>> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users >>>> >>> >> >> ------------------------------------------------------------------------------ >> Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are >> powering Web 2.0 with engaging, cross-platform capabilities. Quickly and >> easily build your RIAs with Flex Builder, the Eclipse(TM)based development >> software that enables intelligent coding and step-through debugging. >> Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com >> _______________________________________________ >> Geotools-gt2-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users >> > ------------------------------------------------------------------------------ _______________________________________________ Geotools-gt2-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
