Hi, i use the actual FWTools... Sorry, but i can't give the image. Thanks. Tanguy
----- Original Message ----- From: "Frank Warmerdam" <[EMAIL PROTECTED]> To: "Ricaille Tanguy" <[EMAIL PROTECTED]> Cc: <[email protected]> Sent: Thursday, February 09, 2006 5:13 PM Subject: Re: [UMN_MAPSERVER-USERS] use of Jpeg2000 ? > Ricaille Tanguy wrote: > > Hi, > > i have jp2 files in approximately 927*927 pixels in 4 multispectral bands, > > coded in 16bits, and i need to provide 500*500 pixels in 3 multispectral > > bands, coded in 8 bits, as a quick look for this image. > > > > I try to use gdal_translate -ot Byte -of JPEG -b 1 -b 2 -b 3 test.jp2 > > test.jpeg, but result is completly black. > > I have try ather parameter and it is each time the same result. > > Tanguy, > > This looks like it should work, or might give a saturated white result. > If you add -scale, it should rescale for you too. > > eg. > gdal_translate -ot Byte -scale -of JPEG -b 1 -b 2 -b 3 test.jp2 test.jpg > > But that does not appear to be the issue since you are getting black. > Could you make your image available for me to try? Also, what GDAL > build are you using? FWTools? your own? > > Best regards, > -- > ---------------------------------------+---------------------------------- ---- > I set the clouds in motion - turn up | Frank Warmerdam, > [EMAIL PROTECTED] > light and sound - activate the windows | http://pobox.com/~warmerdam > and watch the world go round - Rush | Geospatial Programmer for Rent > >
