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i designed my own filter coefficeints and got the result .. want to know whether my results are better or not than db4

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tamanna
tamanna 2013-6-5
my results are
The compression ratio is 28.0859
Retained Energy is 100.0000
PSNR value of decompressed image is 87.8646
and for 'db4' filter coefficients i got the result as
The compression ratio is 44.4661
Retained Energy is 99.9996
PSNR value of decompressed image is 113.4202

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Jan
Jan 2013-6-5
How do you want to measure "better"?
Obviously your function performs a stronger compression for the costs of a lower PSNR, while the reatined energy is almost equal.
If the memory is limited, your method is "better". When quality is more important db4 is "better".

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