Portable Network Graphics (PNG)Welcome to Rich Franzen's PNG Gallery |
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—> PNG Base | ( Wrong PNG? Try
Papua New Guinea Pictures ) ( Right PNG? More PNG images via libpng.org ) |
Square Snakes
4kSnake.png
21 kbytes (320x320 by 12 bits)
The above image contains 4096 shades of grey.
64kSnake.png
317 kbytes (1024x1024 by 16 bits)
You will see an image with lots of shades of grey by clicking above.
The raw pixels for both "snakes" were generated with
a program which I wrote several years ago.
| For an interesting complement to the above Image of 65536 Greys, play with my interactive Page of 60,480 Colors |
 sihWheel7.png 66 kbytes (Adam7) (632x546 by 24 bits) |
| For you square-snake lovers, click on over to the original home of pseudoGrey. See how to squeeze 1786 levels of grey from an image which only provides 256. |
 pGrey1.png 1132 bytes (64x64 by 24 bits) 1786 levels of grey |
Round Snakes | ||
 rotsnake_cropped.png, 115 kbytes, 599x477 pixels, 8-bit image from Rotating Snakes, Copyright A.Kitaoka 2003 No, it's not really moving. At least I don't think it's moving... | ||
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Clicking the image above brings you to the English version of
Akiyoshi's illusion
pages. Dr. Akiyoshi Kitaoka is an Associate Professor of psychology at
the College of Letters, Ritsumeikan University, Kyoto, Japan. Unfortunately
his site uses mostly GIF images along with a few JPEG images. Even so, they
are amazing! | ||
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Full Color Break!
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peppers.png (aka 'hell.png') 659 kbytes (512x512 by 24+8 bits) |
GreatWave.png 354 kbytes (800x538 by 8 bits) |
If you have a slow internet connection it will take
a while to show up (but it's worth it!).
'GreatWave' is also a large file, but it's a classic
which deserves to be preserved in pristine form.
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Check out the newly PNG'd
(pang?) Kodak PhotoCD PCD0992 Use above link to get to all 24 thumbnails. The images are large, 24 bits, and lossless. |
 kodim22.png 686 kbytes |
Monitoring the Monitor
ceMonTest.png
11 kbytes (1024x1024 by 11 bits)
This monitor test image was built years ago
by Chris Eizember of DuPont on their NDT Scan IV system.
| Don't |
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click |
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these |
| iSMPTE.png | 4096x4096 | SMPTE.png | ||
| 156 kbytes | by 12 bits | 104 kbytes | ||
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unless you are on a Unix system or have shiploads of memory!! | ||||
the one on the left was saved using PNG's Adam7 interlacing format.
Actual 16-bit Scan
42uResChart.png
2.5 Mbytes (1280x1280 by 16 bits)
Source image was a very old lab film. Scratches are real!
Graphics at Work
401k1.png, Business Graphics Example
14 kbytes (616x472 by 5 bits)
equivalent GIF is 26 kbytes -- 75% quality JPEG is 38 kbytes
PNG users do not need to be True Believers.
Check out this clean, business-oriented slide-show.
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To Internet Explorer Users
Internet Explorer (both v4 and v5) has an image class bug which prevent it from displaying png images directly without them being part of an HTML infrastructure (web page). So most of the image links here, which show the full PNG images with Netscape, bring up a <Save> requester in IE. This is a bit strange, because otherwise PNG support is a bit better in IE 4 than Netscape 4. IE 4 at least attempts to handle transparancy, and sometimes succeeds. It will be interesting to see if Netscape 5 gets everything right. Microsoft did not. Historical update: IE 6 shows the images without bringing up a requester. Netscape 7 (and its close-brethren Mozilla and Firefox) pretty much has everything right. IE lags in many areas now. Get Firefox! |
Accesses since 1998-08-15
Last updated 2004-11-22
Enjoy! Rich
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