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walala
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 Posted: Thu Aug 21, 2003 8:24 am Post subject: what are the essential features for a image compression tran |
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Dear all,
I am facing with a question in transform based image compression.
Let me ask in this way, if I want to design my own image compression
transform basis, consider the transform as 8x8 matrix multiplication.
In 2D case, the transform can be regarded as Y=T*X*T'. For 1D, the
transform is Y=T*X.
Now if I want to design my own transform basis matrix, other than DCT,
DWT, DFT, DHT, etc... what enabling features does my basis matrix must
have?
Can anybody give me some advice on this?
Thanks in advance,
-Walala |
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Andrey I. Savov
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| Posted: Thu Aug 21, 2003 9:54 am Post subject: Re: what are the essential features for a image compression |
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"walala" <mizhael@yahoo.com> wrote in message
news:6f348bd1.0308201924.14cca320@posting.google.com...
[quote]I am facing with a question in transform based image compression.
Let me ask in this way, if I want to design my own image compression
transform basis, consider the transform as 8x8 matrix multiplication.
In 2D case, the transform can be regarded as Y=T*X*T'. For 1D, the
transform is Y=T*X.
Now if I want to design my own transform basis matrix, other than DCT,
DWT, DFT, DHT, etc... what enabling features does my basis matrix must
have?
Can anybody give me some advice on this?
[/quote]
This looks like a homework, but here>s a hint: correlation |
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