Test Results |
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To test this proposal, we used a
word processor to create a five
color document. We printed it out
on a color laser printer to good
quality paper. Then we scanned it
in. The resulting image had about
250,000 colors, but with image
restoration, human-like
segmentation, and acceptable
tolerances, we were able to bring
the image back to something that
was pretty close to what we had on
the word processor.
The results are shown below in
*.png pictures. We have provided
some other common techniques as a
comparison.
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File Sizes Five Color Tests
| File Sizes (in KBytes)
|
|---|
File
Name
| *.
BMP
| *.
PNG
Pre
| *.PNG
Post
| *.
PNZ
T2
| *. JPG
High
| *.JPG
Med
| *.JPG
Low
| *. TIF
G4
| *.
LDF
| *.
DJVU
|
|---|
| e.* |
5.046 |
2.035 |
0.274 |
0.162 |
2.531 |
2.785 |
2.668 |
0.332 |
1.114 |
0.207 |
| r.* |
56.430 |
41.969 |
0.832 |
0.421 |
23.266 |
10.403 |
8.768 |
6.234 |
3.971 |
0.437 |
| p.* |
207.23 |
113.76 |
2.21 |
1.22 |
63.09 |
18.54 |
14.42 |
12.17 |
5.75 |
1.43 |
| m.* |
1,985 |
1,214 |
10 |
5 |
615 |
137 |
96 |
48 |
30 |
7 |
Click on file name in the "File Name" column
to see the images
|
Click on file name in the "File Name" column
to see the images
|
Click on file name in the "File Name" column
to see the images
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Pre: *.PNG without (before)
Pac-n-Zoom segmentation
Post: *.PNG with (after) Pac-n-Zoom
segmentation
High JPEG: JPEG with high quality
and low compression
Med JPEG: JPEG with medium quality
and medium compression
Low JPEG: JPEG with low quality and
high compression
G4: TIFF file with bitonal group 4
compression
PNZ T2: This is a Pac-n-Zoom file
type 2 (also known as the blob
compressor). The blob
compressor was run after
Pac-n-Zoom segmentation.
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