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- Berthold K. P. Horn, Brian G. Schunck
- Artif. Intell.
- 1981

Optical flow cannot be computed locally, since only one independent measurement is available from the image sequence at a point, while the flow wlocify has two components. A second conshaint isâ€¦ (More)

Finding the relationship between two coordinate systems using pairs of measurements of the coordinates of a number of points in both systems is a classic photogrammetric task . It finds applicationsâ€¦ (More)

- Berthold K. P. Horn, Michael J. Brooks
- Computer Vision, Graphics, and Image Processing
- 1986

We develop a systematic approach to the discovery of parallel iterative schemes for solving the shape-from-shading problem on a grid. A standard procedure for finding such schemes is outlined, andâ€¦ (More)

Finding the relationship between two coordinate systems by using pairs of measurements of the coordinates of a number of points in both systems is a classic photogrammetric task. The solution hasâ€¦ (More)

- Berthold K. P. Horn
- International Journal of Computer Vision
- 1990

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 andâ€¦ (More)

- Katsushi Ikeuchi, Berthold K. P. Horn
- Artif. Intell.
- 1981

An iterative method for computing shape from shading using occluding boundary information is proposed. Some applications of this method are shown. We employ the stereographic plane to express theâ€¦ (More)

- Michael J. Brooks, Berthold K. P. Horn
- IJCAI
- 1985

Well-known met hods for solving the shape-from-shading problem require knowledge of the reflectance map. Here we show how the shape-from-shading problem can be solved when the reflectance map is notâ€¦ (More)

- Berthold K. P. Horn
- Computer Graphics and Image Processing
- 1974

A method lor the determination of lightness from image intensity is presented. For certain classes ot images, lightness corresponds to reflectance, while image intensity is the product of reflectanceâ€¦ (More)

- Anna R. Bruss, Berthold K. P. Horn
- Computer Vision, Graphics, and Image Processing
- 1982

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 theâ€¦ (More)

- Berthold K. P. Horn
- ACM Trans. Math. Softw.
- 1983

The curve which has the smallest integral of the square of curvature while passing through two given points with given orientation is searched for. This is the true shape of a spline used in lofting.â€¦ (More)