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A Direct Method for Locating the Focus of Expansion
(1987-01-01)
We address the problem of recovering the motion of a monocular observer relative to a rigid scene. We do not make any assumptions about the shapes of the surfaces in the scene, nor do we use estimates of the optical ...
An Application of the Photometric Stereo Method
(1979-08-01)
The orientation of patches on the surface of an object can be determined from multiple images taken with different illuminations, but from the same viewing position. This method, referred to as photometric stereo, can ...
Height and Gradient from Shading
(1989-05-01)
The method described here for recovering the shape of a surface from a shaded image can deal with complex, wrinkled surfaces. Integrability can be enforced easily because both surface height and gradient are represented. ...
Direct Passive Navigation
(1985-02-01)
In this paper, we show how to recover the motion of an observer relative to a planar surface directly from image brightness derivatives. We do not compute the optical flow as an intermediate step. We derive a set of ...
Passive Navigation
(1981-11-01)
A method is proposed for determining the motion of a body relative to a fixed environment using the changing image seen by a camera attached to the body. The optical flow in the image plane is the input, while the ...
Picking Up an Object from a Pile of Objects
(1983-05-01)
This paper describes a hand-eye system we developed to perform the binpicking task. Two basic tools are employed: the photometric stereo method and the extended Gaussian image. The photometric stereo method generates ...
The Binford-Horn LINE-FINDER
(1973-12-01)
This paper briefly describes the processing performed in the course of producing a line drawing from an image obtained through an image dissector camera. The edge-marking pahse uses a non-linear parallel line-follower. ...
Relative Orientation
(1987-09-01)
Before corresponding points in images taken with two cameras can be used to recover distances to objects in a scene, one has to determine the position and orientation of one camera relative to the other. This is the ...
On Lightness
(1973-10-01)
The intensity at a point in an image is the product of the reflectance at the corresponding object point and the intensity of illumination at that point. We are able to perceive lightness, a quantity closely correlated ...
Parallel Networks for Machine Vision
(1988-12-01)
The amount of computation required to solve many early vision problems is prodigious, and so it has long been thought that systems that operate in a reasonable amount of time will only become feasible when parallel ...