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You
can't
reach us
BY E-MAIL?
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The question is:
Can you trust in your eyes?
Your MPEG compression project is done and you are very satisfied with the
result watching the pictures on the TV. It seems everything is ok, the picture quality is
excellent - as you can see. Or... you can't notice the difference.
Just try this simple test. You can see two pictures below. They are JPEG
compressed, the left one's compression ratio is 1%, the right one's is 10%. Can you see
any difference? Download (clicking on them) the full size pictures.
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| Compression level is 1% |
Compression level is 10% |
What our software, the Frame Comparator
claims comparing the two pictures?
Well, the difference is huge!
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| Logical difference, the white pixels
represent the difference |
Real difference, just the black pixels mean
equality. |
Now you can suspect the purpose of our new software?
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Measures
the basic frame properties - pixel by pixel
- R,G,B,Y,U,V values.
- Min, max and average brightness, so you can check for example the contrast
has been reduced by the compressor or not. |
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Compares
two pictures or frames
- The comparison channel can be choosen by the user (R,G,B,Y,U,V) |
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Artifical
pictures can be created
- Colorbar, colormatte, random-noise, grayscale, etc to test the compressor |
What else features help your job? For example:
| Waveform window The
measuring channel can be choosen. |
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| Basic picture adjustement You might tune the picture to guess where is the difference
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| Syncronizing When you move the mouse over the comparison picture, the
mesauring point of two source pictures also moved. This means you can see the exact values
of differences.
Color meanings:
X and Y coordinates
R,G,B values
and the Y,U,V valuse are in white |
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Availability 2002. fall
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