Accession Number:

ADA171612

Title:

Analysis of Structure and Motion from Optical Flow. Part 1. Orthographic Projection. Revision

Descriptive Note:

Technical rept.

Corporate Author:

MARYLAND UNIV COLLEGE PARK CENTER FOR AUTOMATION RESEARCH

Personal Author(s):

Report Date:

1985-06-01

Pagination or Media Count:

47.0

Abstract:

The 3D structure and motion of an object is determined from its optical flow under orthrographic projection. First, the image domain is divided into planar or almost planar regions by checking the flow. For each region, parameters of the flow are determined. Transformation rules under coordinate changes and hydrodynamic analogies are also discussed. the 3D structure and motion are determined in explicit forms in terms of irreducible parameters deduced from group representation theory. The solution is not unique, containing an indeterminate scale factor and comprising true and spurious solutions. Their geometrical interpretations are also studied. The spurious solution disappears if two or more regions of the object are observed.

Subject Categories:

  • Printing and Graphic Arts
  • Human Factors Engineering and Man Machine Systems
  • Bionics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE