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Image compression is one of the major image processing techniques that is widely used in medical, automotive, consumer and military applications. Discrete wavelet transforms is the most popular transformation technique adopted for image compression. Complexity of DWT is always high due to large number of arithmetic operations. In this work a modified Distributive Arithmetic based DWT architecture...
Performance of Signal Processing Algorithms implemented in hardware depend on efficiency of datapath, memory speed, and address computation. Pattern of data access in signal processing applications is complex and it is desirable to execute the innermost loop of a kernel every clock. This demands generation of typically three addresses per clock: two addresses for data sample/coefficient and one for...
We describe Heraclitus as an example of a stream cipher that uses a 128 bit index string to specify the structure of each instance in real time: each instance of Heraclitus will be a stream cipher based on mutually clocked shift registers. Ciphers with key-dependent structures have been investigated and are generally based on Feistel networks. Heraclitus, however, is based on mutually clocked shift...
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