Analysis on Optimum Word Length Allocation of Integer DCT
نویسندگان
چکیده
The integer DCT (Int-DCT), which transforms an integer input to an integer output, is attracting many researchers' attention as an effective method for DCT based lossy / lossless unified coding. There are many reports relevant to the Int-DCT. Recently, we proposed an optimum word length allocation method based on the proposed SNR sensitivity. In this report, we confirm an effectiveness of the proposed method by theoretically analyzing effects of the optimum word length allocation based on applying AR(1) model as an input signal. As a result, the optimum word length allocation, which depends on a frequency spectrum of an input signal, significantly improves quality of a reconstructed image.
منابع مشابه
Optimum word length allocation of integer DCT and its error analysis
Recently, the integer DCT (Int-DCT), which transforms an integer input to an integer output, is attracting many researchers’ attention as an effective method for DCT-based lossy/lossless unified coding. So far, there are many reports relevant to the Int-DCT, but they have been limited to a few topics such as how to reduce the number of multipliers with the four-point lossless Hadamard transform...
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