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| 2. |
- Lindeberg, Tony, 1964-
(författare)
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Scale-space for discrete images
- 1989
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Ingår i: Scandinavian Conference on Image Analysis. ; , s. 1098-1107
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Konferensbidrag (refereegranskat)abstract
- This article addresses the formulation of a scale-space theory for one-dimensional discrete images. Two main subjects are treated:Which linear transformations remove structure in the sense that the number of local extrema (or zero-crossings) in the output image does not exceed the number of local extrema (or zero-crossings) in the original image?How should one create a multi-resolution family of representations with the property that an image at a coarser level of scale never contains more structure than an image at a finer level of scale?We propose that there is only one reasonable way to define a scale-space for discrete images comprising a continuous scale parameter, namely by (discrete) convolution with the family of kernels T(n; t) = e^{-t} I_n(t),, where $I_n$ are the modified Bessel functions of integer order. Similar arguments applied in the continuous case uniquely lead to the Gaussian kernel.Some obvious discretizations of the continuous scale-space theory are discussed in view of the results presented. An important result is that scale-space violations might occur in the family of representations generated by discrete convolution with the sampled Gaussian kernel.
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| 3. |
- Maguire Jr., Gerald Q.
(författare)
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Looking back at PACS attempts—what has happened since PACS I
- 1986
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Ingår i: Pictorial information systems in medicine : [proceedings of the NATO Advanced Study Inst. on Pictorial Information Systems in Medicine held in Braunlage FRG, August 27 - September 7, 1984]. - 3540139214 - 0387139214 ; , s. 391-399
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Konferensbidrag (refereegranskat)
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| 4. |
- Berbyuk, Viktor, 1953, et al.
(författare)
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Mathematical design of gantry robots for automating assembly processes
- 1989
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Ingår i: Soviet journal of computer and systems sciences. - 0882-4002. ; 27:2, s. 1-8
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Tidskriftsartikel (refereegranskat)abstract
- A methodology for an automatic selection of the structural schema and the parameters of an assembly robot based on an optimization procedure is described. A finite collection of so-called test positions for the operating element which are determined by the robot purpose and by its characteristic movements is specified. The dynamic, strength, etc. characteristics are computed at these test positions for each structural schema and the constraints for the optimization problem are formulated. The procedure for selecting the structural schema of the robot and its technical parameters consists of minimizing some functional for the indicated constraints. An example of computing the parameters of a gantry robot is given.
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| 5. |
- Hedenstierna, Nils, 1959, et al.
(författare)
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The Use of Inverse Layout Trees for Hierarchical Design Rule Checking
- 1989
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Ingår i: 26th Conference on Design Automation. - 0738-100X. - 0897913108 ; 1989:25-29 June 1989, s. 508-512
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Konferensbidrag (refereegranskat)abstract
- The inverse layout tree concept is used to perform fully hierarchical DRC without any constraints on the use of overlapping or incomplete cells that are completed at higher levels of hierarchy. Hierarchy is preserved and design rule violations are displayed in the cell where they should be corrected. The DRC is corner-based and processes 200-800 corners/second on a VAX 11/750.
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| 6. |
- Palm, J., et al.
(författare)
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A faster SPACFIL
- 1987
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Ingår i: Computers & Chemistry. - : Elsevier BV. - 0097-8485. ; 11:3, s. 223-225
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Tidskriftsartikel (refereegranskat)
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| 7. |
- v. d. Lieth, C. W., et al.
(författare)
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PEPCRE: an interactive program to create, manipulate and display oligopeptides
- 1987
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Ingår i: Journal of Molecular Graphics and Modelling. - : Elsevier BV. - 1093-3263 .- 0263-7855. ; 5:3, s. 119-125
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Tidskriftsartikel (refereegranskat)abstract
- PEPCRE is an interactive computer graphics program for the rapid construction, manipulation and display of oligopeptides. Essentially any desired conformation of an oligopeptide can be constructed in a simple and straightforward manner. The program provides various display and output possibilities. It is user-friendly and is written in FORTRAN 77 for use on inexpensive, monochrome graphics terminals.
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| 8. |
- Strömberg, Dan
(författare)
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Transfer and distribution of application programs
- 1987
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- This work addresses two problems in development of application software. One problem concerns the transfer of software from environments optimized for development, to target environments oriented towards efficient execution. The second problem is how to express distribution of application software. This thesis contains three papers. The first is about a programming language extension for distribution of a program to a set of workstations. The second reports on an experiment in downloading aiming at transfer of programs from development to runtime environments, and the third describes an application area where the need of these development and distribution facilities are evident.
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| 9. |
- Thuné, Michael
(författare)
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Automatic GKS stability analysis
- 1986
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Ingår i: SIAM Journal on Scientific and Statistical Computing. - : Society for Industrial & Applied Mathematics (SIAM). - 0196-5204 .- 2168-3417. ; 7, s. 959-977
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Tidskriftsartikel (refereegranskat)
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