tailieunhanh - Báo cáo hóa học: " Phase-Based Binocular Perception of Motion in Depth: Cortical-Like Operators and Analog VLSI Architectures"

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: Phase-Based Binocular Perception of Motion in Depth: Cortical-Like Operators and Analog VLSI Architectures | EURASIP Journal on Applied Signal Processing 2003 7 690-702 2003 Hindawi Publishing Corporation Phase-Based Binocular Perception of Motion in Depth Cortical-Like Operators and Analog VLSI Architectures Silvio P. Sabatini Department of Biophysical and Electronic Engineering University of Genoa Via All Opera Pia 11a 16145 Genova Italy Email silvio@ Fabio Solari Department of Biophysical and Electronic Engineering University of Genoa Via All Opera Pia 11a 16145 Genova Italy Email fabio@ Paolo Cavalleri Department of Biophysical and Electronic Engineering University of Genoa Via All Opera Pia 11a 16145 Genova Italy Email paolo. cavalleri@ Giacomo Mario Bisio Department of Biophysical and Electronic Engineering University of Genoa Via All Opera Pia 11a 16145 Genova Italy Email bisio@ Received 30 April 2002 and in revised form 7 January 2003 We present a cortical-like strategy to obtain reliable estimates of the motions of objects in a scene toward away from the observer motion in depth from local measurements of binocular parameters derived from direct comparison of the results of monocular spatiotemporal filtering operations performed on stereo image pairs. This approach is suitable for a hardware implementation in which such parameters can be gained via a feedforward computation . collection comparison and punctual operations on the outputs of the nodes of recurrent VLSI lattice networks performing local computations. These networks act as efficient computational structures for embedded analog filtering operations in smart vision sensors. Extensive simulations on both synthetic and real-world image sequences prove the validity of the approach that allows to gain high-level information about the 3D structure of the scene directly from sensorial data without resorting to explicit scene reconstruction. Keywords and phrases cortical architectures phase-based dynamic stereoscopy motion processing Gabor filters lattice

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