Modelling early stages of human vision
Technical Report
·
OSTI ID:5389822
This report presents the first results of an effort to model vision processes operating in the early layers of the human retina. The ultimate goal of this research is to develop a robot vision system based on computational principles of human vision. These include massive parallelism, dynamic feedback, and multilayer pattern recognition. Two neural models were developed. The first represented early vision in terms of static two-dimensional linear equations using a linear matrix and limited feedback. The second considered dynamic two-dimensional nonlinear processes and used matrices of nonlinear differential equations. The first set of equations was parameterized using psychophysical data from subjective intensity judgements for visual illusions. Illusions were quantified by creating a digitized image representing the subjective effect of human perception when exposed to input patterns. A Fourier transform was made of the input and output patterns and used to solve for the coefficients of the retinal operator equations. The equations were then applied to new illusions and compared with human subjective results through three dimensional plots of output pixel intensities. The second model with dynamic equations was studied using a computer simulation developed to operate on varying input wave forms and variable neural connection topologies. 27 refs., 11 figs., 5 tabs.
- Research Organization:
- Oak Ridge National Lab., TN (USA); Army Human Engineering Labs., Aberdeen Proving Ground, MD (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5389822
- Report Number(s):
- ORNL/TM-10031; ON: DE86015996
- Country of Publication:
- United States
- Language:
- English
Similar Records
Neural network modeling of early retinal vision processes
Special Session on Vision
Restoration of patterned vision with an engineered photoactivatable G protein-coupled receptor
Conference
·
Tue Dec 31 23:00:00 EST 1985
·
OSTI ID:6916838
Special Session on Vision
Conference
·
Tue May 01 00:00:00 EDT 1979
·
OSTI ID:6255427
Restoration of patterned vision with an engineered photoactivatable G protein-coupled receptor
Journal Article
·
Wed Nov 29 19:00:00 EST 2017
· Nature Communications
·
OSTI ID:1624060