Problem to convert *.im5 file to jpeg file

[delthy]

Hello, I'd like to convert an image from im5 (visilog) format to jpeg format.
Datatype is S32/U32 but nconvert (Nconvert v4.16) doesn't recognize it... (cf. info)
I tried with "-ngrb 4" option, but it failed (dimensions ok but grey level false)
The size of the image is about 18Mo... Is it possible to convert these data ??? Thanks



nconvert -info toto.im5
** NCONVERT v4.16 (c) 1991-2004 Pierre-E Gougelet (Feb 17 2004/13:47:29) **
Version for Linux x86 (X11) (All rights reserved)
** This is a freeware software (for non commercial use)
lamec1.im5 : Success
Format : Im5
Compression : Uncompressed
Width : 3468
Height : 1379
Nplanes : 1
Bitscount : 8
Depth : 8
# colors : 256
Bytes Per Plane : 3468
Orientation : Top Left
Xdpi : Not set
Ydpi : Not set
Page(s) : 1

[crussol07]

Hello,


you can download the visilog viewer version from visilog web site

www.noesis.fr\download\InstallVisilog63.exe

and use the password : V63-Viewer

With that, on PC, you can load your im5 image and save it on jpeg

[xnview]

Hello, I'd like to convert an image from im5 (visilog) format to jpeg format.
Datatype is S32/U32 but nconvert (Nconvert v4.16) doesn't recognize it... (cf. info)
I tried with "-ngrb 4" option, but it failed (dimensions ok but grey level false)
The size of the image is about 18Mo... Is it possible to convert these data ??? Thanks



nconvert -info toto.im5
** NCONVERT v4.16 (c) 1991-2004 Pierre-E Gougelet (Feb 17 2004/13:47:29) **
Version for Linux x86 (X11) (All rights reserved)
** This is a freeware software (for non commercial use)
lamec1.im5 : Success
Format : Im5
Compression : Uncompressed
Width : 3468
Height : 1379
Nplanes : 1
Bitscount : 8
Depth : 8
# colors : 256
Bytes Per Plane : 3468
Orientation : Top Left
Xdpi : Not set
Ydpi : Not set
Page(s) : 1

I don't understand -info works but you can't convert it??
Do you have -truecolors?