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Decomposition of grey-scale morphological structuring elements in hardware

Andreadis I., Fyrinides C., Gasteratos A., Boutalis Y.

Image Processing & Communications

2002

Vol. 8, no 2

13-22

Morphological image processing machines are not capable of handling large size structuring elements. A new architecture for fast execution of the erosion/dilation operations in an up to 9 x 9-pixel, arbitrarily shaped, image window through decomposition of grey-scale morphological structuring element into 3 x 3-pixel sub-domains is presented in this paper. The domain of the structuring element is divided into non-overlapping sub-domains. From these local results the global morphological operation is composed. The proposed hardware structure has been also implemented in VLSI and the throughput rate of the resulting ASIC is 10 Mbytes/sec.