DISCRETE, SPATIOTEMPORAL, WAVELET MULTIRESOLUTION ANALYSIS METHOD FOR COMPUTING OPTICAL-FLOW

被引：17

作者：

BURNS, TJ

ROGERS, SK

RUCK, DW

OXLEY, ME

机构：

[1] Air Force Inst of Technology, Wright-Patterson AFB, OH

来源：

OPTICAL ENGINEERING | 1994年 / 33卷 / 07期

关键词：

ADAPTIVE WAVELET TRANSFORMS; WAVELET MULTIRESOLUTION ANALYSIS FAST WAVELET TRANSFORM; OPTICAL FLOW; IMAGE PROCESSING;

D O I：

10.1117/12.172250

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A wavelet-based system for computing localized velocity fields associated with time-sequential imagery is described. The approach combines the mathematical rigor of the multiresolution wavelet analysis with well-known spatiotemporal frequency flow computation principles. The foundation of the approach consists of a unique, nonhomogeneous multiresolution wavelet filter bank designed to extract moving objects in a 3-D image sequence based on their location, size, and speed. The filter bank is generated by an unconventional 3-D subband coding scheme that generates 20 orientation-tuned filters at each spatial and temporal resolution. The frequency responses of the wavelet filter bank are combined using a least-squares method to assign a velocity vector to each spatial location in an image sequence. Several examples are provided to demonstrate the flow computation abilities of the wavelet vector motion sensor.

引用

页码：2236 / 2247

页数：12

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