2 VLSI Architecture for the 2-D Discrete Wavelet Transform

摘要

The present invention is a two-dimensional discrete wave relates to a VLSI architecture for the wavelet transform, a structure for a level calculated in the one-dimensional discrete wavelet transform to the output by multiplying the low-frequency and high-frequency coefficients that were stored with respect to the input low-frequency and high-frequency processing elements (PE) array to obtain an alternating component; And using the low-frequency output and high-frequency output value low frequency - characterized in that it comprises a processing element multiplier processing element (PE) to obtain a high-frequency component and an adder (PE) - low frequency component, a low frequency-high-frequency component, a high frequency-low frequency components, and high frequency do. According to the VLSI structure for a two-dimensional discrete wavelet transform calculated in accordance with the present invention, basically line-discrete wave of the calculation of the discrete wavelet transform in the column direction without using a column separation method and performing the result immediately direction scarlet calculating a conversion because there is no need to store the intermediate result, unlike the conventional structure, a simple control benefits.