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<p>Recently, a superposition property called threshold decomposition and another property called stacking were introduced and shown to apply successfully to gray-scale morphological operations. This property allows gray-scale signals to be decomposed into multiple binary signals. The signals are processed in parallel, and the results are combined to produce the desired gray-scale result. The authors present the threshold decomposition architecture and the stacking property that allows the implementation of this architecture. Gray-scale operations are decomposed into binary operations. This decomposition allows gray-scale morphological operations to be implemented using only logic gates in VLSI architectures that can significantly improve speed as well as give theoretical insight into the operations.</p>
parallel processing; computerised picture processing; gray-scale morphology; binary morphology; stacking; multiple binary signals; threshold decomposition architecture; logic gates; VLSI; computerised picture processing; digital signal processing chips; parallel architectures; VLSI

F. Shih and O. Mitchell, "Threshold Decomposition of Gray-Scale Morphology into Binary Morphology," in IEEE Transactions on Pattern Analysis & Machine Intelligence, vol. 11, no. , pp. 31-42, 1989.
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