Browsing AI Memos (1959 - 2004) by Author "Weinshall, Daphna"
Now showing items 1-9 of 9
-
Computational Vision: A Critical Review
(1989-10-01)We review the progress made in computational vision, as represented by Marr's approach, in the last fifteen years. First, we briefly outline computational theories developed for low, middle and high-level vision. We ... -
Direct Computation of 3D Shape Invariants and the Focus of Expansion
(1989-05-01)Structure from motion often refers to the computation of 3D structure from a matched sequence of images. However, a depth map of a surface is difficult to compute and may not be a good representation for storage and ... -
Distance Metric Between 3D Models and 3D Images for Recognition and Classification
(1992-07-01)Similarity measurements between 3D objects and 2D images are useful for the tasks of object recognition and classification. We distinguish between two types of similarity metrics: metrics computed in image-space (image ... -
The Matching of Doubly Ambiguous Stereograms
(1991-07-01)I have previously described psychophysical experiments that involved the perception of many transparent layers, corresponding to multiple matching, in doubly ambiguous random dot stereograms. Additional experiments ... -
Qualitative Depth and Shape from Stereo, in Agreement with Psychophysical Evidendence
(1987-12-01)Obtaining exact depth from binocular disparities is hard if camera calibration is needed. We will show that qualitative depth information can be obtained from stereo disparities with almost no computations and with ... -
Seeing 'Ghost' Solutions in Stereo Vision
(1988-09-01)A unique matching is a stated objective of most computational theories of stereo vision. This report describes situations where humans perceive a small number of surfaces carried by non-unique matching of random dot ... -
A Self-Organizing Multiple-View Representation of 3D Objects
(1989-08-01)We explore representation of 3D objects in which several distinct 2D views are stored for each object. We demonstrate the ability of a two-layer network of thresholded summation units to support such representations. Using ... -
The Shape of Shading
(1990-10-01)This paper discusses the relationship between the shape of the shading, the surface whose depth at each point equals the brightness in the image, and the shape of the original surface. I suggest the shading as an ... -
Stimulus Familiarity Determines Recognition Strategy for Novel 3-D Objects
(1989-07-01)We describe a psychophysical investigation of the effects of object complexity and familiarity on the variation of recognition time and recognition accuracy over different views of novel 3D objects. Our findings indicate ...
