tailieunhanh - Báo cáo hóa học: " Research Article An Analog Processor Array Implementing Interconnect-Efficient Reference Data Shift and SAD/SSD Extraction for Motion Estimation"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article An Analog Processor Array Implementing Interconnect-Efficient Reference Data Shift and SAD/SSD Extraction for Motion Estimation | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2009 Article ID 127630 11 pages doi 2009 127630 Research Article An Analog Processor Array Implementing Interconnect-Efficient Reference Data Shift and SAD SSD Extraction for Motion Estimation Jonne Poikonen 1 Mika Laiho 1 Ari Paasio 1 Lauri Koskinen 2 and Kari Halonen2 1 Department of Information Technology University of Turku 20014 Turku Finland 2Electronic Circuit Design Laboratory Helsinki University of Technology . Box 300 02015 Espoo Finland Correspondence should be addressed to Jonne Poikonen jokapo@ Received 25 September 2008 Accepted 30 January 2009 Recommended by Diego Cabello Ferrer A cellular analog processor array for use in variable block-size motion estimation with a new simple method for shifting reference image data is presented. The new shift method leads to a greatly reduced number of neighborhood connections for each cell of the array and allows for all shifts within the 8 8 search area to be performed in a single step with simple digital controls. The new shift circuitry together with some other cell and system level optimizations reduces silicon area and array layout complexity enabling faster and more efficient parallel full search motion estimation hardware. A 32 X 32 cell parallel analog test array for reference-shift with a maximum block-size of 16 X 16 as well as absolute value quadratic processing for variable block-size analog motion estimation AME has been designed in a pm CMOS technology. Copyright 2009 Jonne Poikonen et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. Introduction Cameras with multi- megapixel sensors have become ubiquitous in even relatively low-end mobile phones. While this makes good quality still imaging possible the limited amount of .