Test Results |
|
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
|
|
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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