Implementing grayscale morphological operators with a compact ranked order extractor circuit

J. Poikonen1, A. Paasio2,1
1Department of Information Technology, Laboratory of Electronics and Communication Systems, University of Turku, Finland
2Deportment of Electrical and Communication Engineering, Electronic Circuit Design Laboratory, Helsinki University of Technology, Finland

Tóm tắt

Mathematical morphology provides tools for many image processing tasks. In this paper we discuss the implementation of grayscale morphological operators of erosion, dilation and reconstruction with a hardware efficient ranked order filter circuit. By using dedicated hardware for these basic operations a higher performance of processing more complex functions in a massively parallel processor array can be achieved. Because the circuit realization of the ranked order filter used is very compact, the area required for one processing cell can be kept low. Simulations of the operation were performed with a 0.18 /spl mu/m digital CMOS technology.

Từ khóa

#Gray-scale #Circuits #Morphology #Image reconstruction #Filters #Image processing #Hardware #Cellular neural networks #Morphological operations #Data mining

Tài liệu tham khảo

paasio, 2001, An Analogue Circuit for Weighted Ranked Order Filtering, Proc ECCTD 01 paasio, 2001, A Compact Computational Core for Image Processing, Proc ECCTD 01 lazzaro, 1989, Winner-take-all Networks of O(n) Complexity, Advances in neural information processing systems, 1, 703 10.1109/81.661683 10.1049/el:19960728 10.1109/5.387088 goutsias, 2000, Mathematical Morphology and its Applications to Image and Signal Processing, 10.1007/b117970