Ciao,
ho un altro suggerimento (forse non utilissimo ma la butto li):
con pdflatex si possono usare anche immagini bmp a patto di caricare il pacchetto bmpsize
http://texcatalogue.sarovar.org/entries/bmpsize.html
Cito dalla doc:
1.1 Introduction
The support of bitmap images in the TEX world is quite poor. TEX can read tex tfiles and thus parse the bounding box of EPS files, but it cannot read binary files.
If TEX reads a line, it removes spaces before the line end and normalizes the line end itself to get independent from the convention of the operating system. The situation changed with pdfTEX. It is a TEX compiler, where the output driver is already integrated. Images of type JPEG and PNG are supported directly and the size of the images are reported back to the TEX language. Thus it is easy for package graphics to get the size of the images. The problem remains for other drivers than pdfTEX in PDF mode. The size information must either be given manually by the bounding box options or an
additional file is used for each image, where the size information is stored as EPS bounding box. Program dvips comes with the program ebb that create these .bb files. However it ignores the natural size of the image and uses a fixed resolution of 100 DPI.
Since pdfTEX 1.30.0 there are some new primites. Especially \pdffiledump is very helpful. It reads a file in binary mode and reports the selected area as hex dump. It works in both DVI and PDF mode of pdfTEX. Thus it is now possible to read and parse bitmap files to get their size. This project uses this feature to implement parsers for many bitmap file types.
1.2 Bitmap image parsers
This project supports the following image types:
BMP, GIF, JPEG, MSP, PAM, PCX, PNG, PNM, SGI, TGA, TIFF,
WMF, XPM