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- Path: menudo.uh.edu!usenet
- From: oahvenla@vinkku.hut.fi (Osma Ahvenlampi)
- Newsgroups: comp.sys.amiga.reviews
- Subject: SURVEY: Amiga picture viewers
- Followup-To: comp.sys.amiga.graphics
- Date: 23 Feb 1994 17:45:49 GMT
- Organization: The Amiga Online Review Column - ed. Daniel Barrett
- Lines: 126
- Sender: amiga-reviews@math.uh.edu (comp.sys.amiga.reviews moderator)
- Distribution: world
- Message-ID: <2kg4od$npk@menudo.uh.edu>
- Reply-To: oahvenla@vinkku.hut.fi (Osma Ahvenlampi)
- NNTP-Posting-Host: karazm.math.uh.edu
- Keywords: graphics, viewer, IFF, JPEG, GIF, freeware, shareware
-
-
- PRODUCT NAMES
-
- FastJPEG 1.08, by Christoph Feck
- Mostra 2.0, by Sebastiano Vigna
- PPShow 4.0, by Nico Francois and Rafael D'Halleweyn
- ShowGIF 1.01, by Christophe Passuello
- Viewtek 1.05, by Thomas Krehbiel
-
- At the time of this writing, FastJPEG 1.08 was still in the beta
- test stage, and thus not publicly available.
-
- [MODERATOR'S NOTE: This review was updated on Feb 23, 1994.
- Search for the text "[UPDATE:" to find updated information.
- -Dan]
-
-
- BRIEF DESCRIPTION
-
- These are all picture viewers for the Amiga. They are compared
- for speed and picture quality on IFF, GIF, and JPEG images. Not all the
- viewers support all these image file formats.
-
-
- AUTHOR/COMPANY INFORMATION
-
- All the programs except FastJPEG 1.08 are available on the Aminet
- ftp sites:
-
- FastJPEG_1.0.lha gfx/show 33K+JPEG viewer with dithering for ECS/AGA
- Mostra2.lha gfx/show 53K+Shareware ILBM viewer, supports 2.0 & 3.0
- PPShow40.lha gfx/show 79K+ILBM/ANIM/GIF/JPEG/DataTypes viewer
- Viewtek.lha fish/ff903 66K+JPEG/GIF/IFF viewer. V1.05
- FastGIF2.08.lha gfx/show 151K+* Newest version (2.08) of FastGIF (21 Jun
-
- [UPDATE: Note that ShowGIF 1.01 is the CLI version of FastGIF 2.08.
- - Dan]
-
-
- LIST PRICE
-
- All programs are freeware or shareware.
-
-
- MACHINE USED FOR TESTING
-
- Amiga 500, 7.09 MHz 68010 CPU
- 1MB Chip RAM, 2MB Fast RAM
-
-
- ABOUT THE TESTS
-
- After getting the new PPShow 4.0, I decided to do a few tests of the
- various picture viewers available. The file formats tested are:
-
- JPEG - 24bit color JPEG. I didn't have any greyscale pictures around.
- GIF - 16 color and 256 color highres (~640x480) images
- IFF - Highres interlaced 16 color, and lowres interlaced HAM6
-
- NOTE: Only Viewtek and PPShow are capable of showing all these formats.
- Mostra shows IFF only, ShowGIF GIF only, and FastJPEG JPEG only.
-
- I did not test IFF24, 8bit greyscale JPEG, HAM8, and other AGA modes.
-
-
- IFF ILBM TESTS
-
- Three of the programs, PPShow, Mostra and Viewtek, support IFF.
- PPShow was the fastest of them. With 16 color highres/laced pictures,
- Mostra was about 40% slower, and Viewtek about 70% slower than PPShow..
- With lowres/laced HAM pictures, Mostra was about 20% slower than PPShow,
- while Viewtek was 230% slower!
-
-
- GIF TESTS
-
- Viewtek, ShowGIF, and PPShow can display GIF pictures. Of the three,
- ShowGIF was clearly fastest. With 16 color highres GIFs, PPShow was about
- 90% slower, while Viewtek was as much as 300% slower! All three programs
- displayed the picture on a 16 color highres screen. With 256 color
- pictures, Viewtek was the only one of the programs capable of color output.
- It did that by converting the picture to HAM for display. I could not get it
- to display these pictures as greyscale on a 16 color screen at all. This is
- what the other programs did. This time, PPShow was 160% slower than
- ShowGIF, while Viewtek took 760% more time to convert the picture to HAM
- instead of greyscale.
-
-
- JPEG TESTS
-
- JPEG format is supported by FastJPEG, PPShow, and Viewtek. Picture
- size and other variations seemed to have little effect on the relative speeds
- of the viewers. All three display 24bit color JPEGs by converting them to
- HAM. All three also support HAM8, even though FastJPEG has a separate
- version for that. At least FastJPEG and Viewtek also support greyscale
- (8bit) JPEGs, but I did not test the speed of those. FastJPEG was the clear
- winner in this league. Not only it was the fastest, but also had the best
- display quality, especially noticeable in HAM6. PPShow was about 20%
- slower, Viewtek about 70% slower than FastJPEG. PPShow had terrible
- artifacting on vertical and diagonal lines with high contrast. FastJPEG, on
- the other hand, produced crisp lines with fairly good anti-aliasing. Viewtek
- output was something between these two. FastJPEG has good dithering
- routines, while both PPShow and Viewtek hardly seem to dither at all.
-
-
- SUMMARY
-
- All times are in seconds.
-
- IFF/16 IFF/HAM GIF/16 GIF/256 JPEG/24
- 640x512 384x480 528x296 720x512 300x474 JPEG quality
- FastJPEG -- -- -- -- 42.4 s good
- ShowGIF -- -- 4.6 s 15.4 s -- --
- PPShow 2.3 s 2.5 s 8.7 s 39.4 s 50.3 s poor
- Mostra 3.2 s 2.9 s -- -- -- --
- Viewtek 4.0 s 8.3 s 18.6 s *132.2 s 72.2 s fair
-
- *) Viewtek was the only one of the programs that could produce color output
- of 256 color GIFs on ECS machines. The time given is for that.
-
-
- COPYRIGHT NOTICE
-
- Tests made by Osma Ahvenlampi.
- This article is freely distributable through any channels.
-
- ---
-
- Daniel Barrett, Moderator, comp.sys.amiga.reviews
- Send reviews to: amiga-reviews-submissions@math.uh.edu
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