HOME				CONTACT

Works by Albert H J Christensen

Articles in Learned Journals

• A Note on Geodesic Polyhedra. Triangulation and Contouring of Spheres (1978). Computers and Graphics, 3, 163-165
• Recursive Patterns or the Garden of Forking Paths (1982). LEONARDO, Journal of Art and Technology, 15, 177-182
• Uniform Grids from Raster Data (1983). IEEE Computer Graphics and Applications, 3, 6, 44-53
• Parallel Pairs in Automated Cartography (1986). Cartographica, 24, 1. 62-78
• The Chamberlin Projection (1992). Cartography and GIS, 19, 2, 88-100
• Method and System for the Smooth Contouring of Triangulated Surfaces. US Patent #5333248 granted on July 26, 1994
• The Practice of Piecewise Fits with Particular Reference to Property Mapping (1996). ACSM Surveying and LIS, 56, .3, 165-183
• A Global Method for the Delineation of Maritime Boundaries. The Hydrographic Journal, No. 89, July 1998
• Cartographic Line Generalization with Waterlines and Medial-Axes. (1999). Cartography & GIS, 26, 1, 19-32
• The Revival of a Victorian Art. Waterlining with a Computer. The Cartographic Journal, June 1999, 36(1), 31-41
• Line Generalization by Waterlining and Medial-Axis Transformation. Successes and Issues in an Implementation of Perkal's Proposal. The Cartographic Journal, June 2000, 37(1), 19-28
• Contour Smoothing by an Eclectic Procedure. Photogrammetric Engineering and Remote Sensing, April 2001, 67(4), 511-517. John J. Davidson President's Award for Practical Papers (3rd. place)
• A Reflection on the Waterlining Technique in Relation to the History of Map Ornamentation. The Cartographic Journal, 2008. Vol. 45 No.1, pp 68-78.
• Automated Delineation of Sea Limits Following All Baseline Sinuosities. To be published in the July 2008 issue of The Hydrographic Journal.

Articles in trade magazines, reports and papers in conference proceedings

• Programs for the Adjustment of the IGM Nets. In collaboration with A. Elias. International Symposium on Computational Geodesy. IGU, University of Oxford, UK, 1973
• Automatic Contouring. Application to IP Methods. (in Spanish) GEOACTA, 1975
• A Hidden-Lines Solution for the Polyhedric Approximation of Three-Dimensional Solids. CSIR, WISK 235, Pretoria
• SCANLINE. A Program for the Conversion of Raster maps into Line Maps. in collaboration with C. S. Mueller. TWISK 43, CSIR, Pretoria
• An Algorithm for the Approximation of Surfaces and for the Packing of Volumes. First South African Computer Symposium, 1979, and published in Quaestiones Informaticae, 1979
• Modeling the Human Red Blood Cell. In collaboration with Sheila Saffer and D. H. Jacobson. Lecture Series in Biomathematics, Springer Verlag, Berlin, 1979
• Instructions for the Use of the Gridding Routines. NRIMS 17, CSIR, Pretoria
• Instructions for the Use of the Hidden-Lines Package. NRIMS 18, CSIR, Pretoria
• PLO960. A package of Subroutines for Plotting on a Calcomp 960 controlled by a Nova Mini-computer. Internal Report 125, NRIMS, Pretoria
• A Proposal for WIRES, a Program for Drawing "Haloed" Perspective Views of Wire-frame Objects. Internal Report I332, NRIMS, Pretoria
• Report on Raster-to-Vector software development on a Perkin-Elmer minicomputer. In fulfillment of USGS Contract 14-08-0001-22822. Des Plaines, Illinois, September 11, 1985. 60 pages
• Marrying a Vector and a Raster System. Proceedings. ACSM 1984 Convention, San Antonio, Texas
• Fitting a Triangulation to Contour Lines. Proceedings. AutoCarto 8, Baltimore, 1987
• The Conversion of Contour Lines into Digital Terrain Models. (1989). (In Spanish). Revista Cartográfica, PAIGH. Number 56, 1989, pp.133-165. A summary was read at the II Latin American Conference on GIS, Merida, Venezuela, 1989
• Final Report on the Mendoza Urban Cadastral Project. Submitted to the Provincial Directorate of Cadastral Surveys, Mendoza, and to IBM Argentina S.A., Mendoza Branch, May 1994. 25 pages
• Street Centerlines by a Fully Automated Medial-Axis Transformation. Proceedings of GIS/LIS '96, Nov. 19-21, 1996, Denver, Co., 107-116
• Water-Lines and Centerlines in Hydrography Overlays. GIM, August 1998
• Delimitation of Sea Boundaries by a Fully Automated Procedure. Proceedings. INSMAP 1998 Conference, Melbourne, Florida, Nov. 30-Dec. 3, 1998
• An Eclectic Procedure for the Smoothing of Contours. Proceedings. ASPRS 2000, Wash. DC, May 22-26
• On the Faithful Conversion of Contours. Proceedings. 20th Conference of the International Cartographic Association, Beijing, August 6-10, 1312-1323
• From Contours to Terrain Models. Proceedings (CD) 2002 ACSM/ASPRS, Washington D.C, April 19-26
• A fully Automated Delineator of Maritime Boundaries. Proceedings (CD). XIX FIG Congress, Washington D.C., April 19-26, 2002
• The National Mapping Act and the Status of Cartography in the Argentina Republic. In collaboration with R. Rodriguez and C. Brunini. Proceedings (CD) of the XIX FIG Congress, Washington D.C., April 19-26, 2002
• Two Experiments on Stream Network Generalization. Proceedings (CD). 21st International Cartographic Conference, Durban, August 10-16 2003
• Applications of Waterlining in Cartography and GIS. (in Spanish). Proceedings (CD). First Congress on Cartographic Science, Buenos Aires, June 25-27
• Two Argentineans in the Army Map Service. ACSM Bulletin. July/August 2005
• Triangulation Adjustments in Buenos Aires. ACSM Bulletin. November/December 2007
• We Should Apply Water Parallelism to Land Boundaries. Professional Surveyor. February 2008. Vol. 28, No. 2