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- XV 2.10 is now available for anonymous ftp on the machines 'export.lcs.mit.edu'
- (in contrib/xv-2.10.tar.Z) and 'ftp.cis.upenn.edu' (in pub/xv-2.10.tar.Z).
-
- New Features:
- TIFF file i/o
- PDS/VICAR file input
- color gradient generation
- 'reload current image' on an external signal
- improved 'slow24' 24-to-8 color conversion algorithm
- incorporates the ppmquant 24-to-8 color conversion algorithm
- displays x,y coordinates of handles in the 'graph' windows
- improved GIF89 parsing
- faster dithering for 1-bit B/W X displays
-
- And of course, there's several new command line options, X resources, and more
- bug fixes than I'd care to admit :-)
-
- And no, it still doesn't display true 24-bit images on 24-bit displays. Get
- back to me next year on that subject...
-
-
- Brief Description:
- ------------------
- XV is a program that displays image files in GIF87, GIF89, JPEG,
- PBM/PGM/PPM, TIFF, PDS/VICAR Sun Rasterfile, and X11 Bitmap formats.
- XV runs on nearly ALL X displays: 1, 2, 4, 6, 8, 16, 24, and 32-bit,
- color, greyscale, and black/white.
-
- XV displays one image at a time in an output window, or on the root
- window. You can arbitrarily stretch or compress the window, and the
- picture will be rescaled to fit. You can rotate the picture in
- 90-degree steps. You can flip the picture vertically and
- horizontally. You can repeatedly 'crop' a picture (define a
- rectangular 'region-of-interest' and 'throw away' the rest). You can
- magnify any portion of the picture by any amount, up to the maximum
- size of your screen.
-
- XV allows you click on the picture to determine pixel RGB values and
- x,y coordinates. You can perform arbitrary 'gamma correction' on the
- picture both in RGB space and HSV space. You can specify the maximum
- number of colors that XV should use, for some interesting visual
- effects. You can have the program produce a stippled version of the
- picture using black and white, or any other pair of colors.
-
- XV can write images in a variety of formats, with many of the
- modifications you may have made to the picture saved as well. You can
- use XV to do format conversion. XV will also automatically uncompress
- compress-ed files, as well as read files from stdin.
-
-
- John Bradley University of Pennsylvania - GRASP Lab
- bradley@cis.upenn.edu
-
- March 3, 1992
-