Accession Number:

ADA247862

Title:

Curvature Estimation in Orientation Selection

Descriptive Note:

Final rept. 1 Feb 1989-31 Jan 1992

Corporate Author:

MCGILL RESEARCH CENTRE FOR INTELLIGENT MACHINES MONTREAL (QUEBEC) COMPUTER VISION AND ROBOTICS LAB

Personal Author(s):

• Zucker, Steven W.
• Cynader, Max S.

Report Date:

1992-01-31

Pagination or Media Count:

7.0

Abstract:

To summarize, progress has been made on a family of related problems, including A model of endstopped visual cortical neurons was extended to include complex components An extensive simulation of the model was completed with regard to orientation, positional, spatial frequency, curvature, chevron, and end-line sensitivity Orientation discontinuities were extended into the motion domain, and psychological and computational experiments were performed to confirm the hypothesis of multiple directions being represented at a point of discontinuity A theory was developed to capture the non-linearities necessary for early measurement of orientation and curvature A totally different theory has begun to take shape for functionally characterizing cytochrome oxidase blobs and The mathematical foundations were laid for a theory of shape.

Descriptors:

• *CURVATURE
• FREQUENCY
• SIMULATION
• SPATIAL DISTRIBUTION
• MEASUREMENT
• POSITION(LOCATION)
• COMPUTATIONS
• MATHEMATICS
• DISCONTINUITIES
• CYTOCHROME OXIDASE
• SELECTION
• PSYCHOLOGY
• HYPOTHESES
• MODELS
• THEORY
• SHAPE
• MOTION
• ORIENTATION(DIRECTION)
• ESTIMATES

Subject Categories:

• Biology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE