-rw-r--r-- 1 lilley users 331 Jan 9 20:28 reddot.gif
-rw-r--r-- 1 lilley users 1050 Jan 9 21:04 reddot.pcx
-rw-r--r-- 1 lilley users 1100 Jan 9 21:05 reddot.rgb
-rw-r--r-- 1 lilley users 732 Jan 9 21:04 reddot.rle
-rw-r--r-- 1 lilley users 792 Jan 9 21:05 reddot.x
-rw-r--r-- 1 lilley users 1194 Jan 9 21:14 reddot.hdf
That's ZSoft paint PCX, SGI Iris RGB, Utah RLE ( a contender, I forgot),
AVS image format and NCSA hierarchical data format.
Here's the blurb from imconv about rle, from the
University of Utah:
rle Utah Run length encoded image file
Creator: Utah Raster Toolkit, University of Utah
Read support:
8-bit RLE-compressed color index image files, with or without CLT,
with or without 8-bit Alpha plane. 24-bit RGB RLE-compressed image
files, with or without 8-bit Alpha plane.
Write support:
8-bit RLE-compressed color index image files, with or without CLT,
with or without 8-bit Alpha plane. 24-bit RGB RLE-compressed image
files, with or without 8-bit Alpha plane.
And here is the scoop on HDF. Note that Mosaic for X can be compiled to have
inline HDF already. It has supported it for a year or more:
hdf Hierarchical Data File
a.k.a.: df, ncsa
Creator: NCSA
Read support:
8-bit color index images, un- and RLE-compressed. 16-, 24-, and
32-bit color index images, un-compressed. 24-bit RGB, un- and RLE-
compressed, un-, scanline- and plane-interleaved. Raster image
groups as well as older Raster-8 files.
Write support:
8-bit color index images, un- and RLE-compressed. 16-bit color
index images, un-compressed. 24-bit RGB, uncompressed, un-,
scanline- and plane-interleaved. Raster image group and older
Raster-8 tags included.
HDF is not just an image format though. I did notice a second or two delay
converting to hdf, the others were fairly instant.
And, for completeness, the gzipped sizes:
-rw-r--r-- 1 lilley users 295 Jan 9 20:28 reddot.gif.gz
-rw-r--r-- 1 lilley users 464 Jan 9 21:14 reddot.hdf.gz
-rw-r--r-- 1 lilley users 552 Jan 9 20:31 reddot.lzw.tif.gz
-rw-r--r-- 1 lilley users 538 Jan 9 20:30 reddot.none.tif.gz
-rw-r--r-- 1 lilley users 565 Jan 9 20:31 reddot.packbits.tif.gz
-rw-r--r-- 1 lilley users 314 Jan 9 21:04 reddot.pcx.gz
-rw-r--r-- 1 lilley users 274 Jan 9 20:40 reddot.ppm.gz
-rw-r--r-- 1 lilley users 390 Jan 9 21:05 reddot.rgb.gz
-rw-r--r-- 1 lilley users 410 Jan 9 21:04 reddot.rle.gz
-rw-r--r-- 1 lilley users 287 Jan 9 21:05 reddot.x.gz
gzipped ppm still leads on file size, here.
-- Chris Lilley +-------------------------------------------------------------------------+ | Technical Author, Manchester and North HPC Training & Education Centre | +-------------------------------------------------------------------------+ | Computer Graphics Unit, | Email: Chris.Lilley@mcc.ac.uk | | Manchester Computing Centre, | Voice: +44 61 275 6045 | | Oxford Road, | Fax: +44 61 275 6040 | | Manchester, UK. M13 9PL | X400: /I=c /S=lilley | | /O=manchester-computing-centre /PRMD=UK.AC /ADMD= /C=GB/| |<A HREF="http://info.mcc.ac.uk/CGU/staff/lilley/lilley.html">my page</A> | +-------------------------------------------------------------------------+ |This is supposed to be data transfer, not artificial intelligence. M VanH| +-------------------------------------------------------------------------+