NASA Scientific and Technical Aerospace Reports

20060000069 Gemini Observatory, Hilo, HI, USA
Gemini Focuses on New Kuiper Belt Worlds
Trujillo, Chad; Gemini Focus: Newsletter of the Gemini Observatory; December 2005; In English; See also 20060000060;
Copyright; Avail.: Other Sources
his past year will be remembered as a landmark period in terms of outer solar T system discoveries. The three minor
planets with the greatest absolute magnitudes (and if albedo is assumed to be constant among minor planets, the largest
diameters) were found during this period. They are 2003 UB3i3, 2003 EL61, and 2005 FYg. Although their names (provisional
designations created by the Minor Planet Center) are somewhat forgettable, their physical properties are not. The largest of
the three, 2003 UB3I3, is the first object larger than Pluto discovered orbiting the Sun since Neptune s discovery in 1846. The
next largest object-2003 EL62-at two-thirds the diameter of Pluto, is no less interesting because it is actually a ternary system.
Its primary is the most rapid large rotator known in the solar system. It spins so fast that it is deformed into an oblate shape
called a triaxial ellipsoid. The third discovery, 2005 FYg, has a likely size somewhere between one-half to two-thirds the
diameter of Pluto. It is unique in its extreme methane ice absorption features. All of these bodies are in the Kuiper Belt, the
region of the solar system beyond Neptune, and are referred to as Kuiper Belt Objects (also often called trans-Neptunians, even
though not all of their orbits cross Neptune’s).
Derived from text
Solar System; Gemini Project; Gas Giant Planets; Kuiper Belt
20060001590 European Strategic Programme for Research and Development in Information, Brussels, Belgium
Aspects of Directional Filtering and Applications in Image Processing
Ikonomopoulos, A.; IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP ‘87); Volume 1;
1987, pp. 7.13.1-7.13.4; In English; See also 20060001583; Copyright; Avail.: Other Sources
This paper gives a brief overview of an approach to several problems of image processing based on directional filtering.
Definitions and possible implementation routes will be given. Direction filtering allows the extraction from an image of edge
structures within a limited interval of directions. It is shown that a powerful edge detection scheme based on one
implementation of this filtering may lead to very interesting solutions to various problems such as coding, restoration and
texture discrimination.
Author
Image Processing; Edge Detection
20060001601 Tokyo Univ. of Agriculture and Technology, Japan
Measurement of Two-Dimensional Movement of Traffic by Image Processing
Kobatake, Hidefumi; Inoue, Yoshiaki; Namai, Tatsuor; Hamba, Nobuhiro; IEEE International Conference on Acoustics,
Speech, and Signal Processing (ICASSP ‘87); Volume 1; 1987, pp. 14.17.1 - 14.17.4; In English; See also 20060001583;
Copyright; Avail.: Other Sources
A software system for measurement of two-dimensional traffic flow using moving picture processing has been developed.
The proposed system is characterized by the functions classifying passing vehicles into one of three classes: motorcycle, small
and large-sized vehicles and detecting their two-dimensional trajectories on a roadway. Experiments to test the system
performance have been performed and all of passing vehicles were detected by the system and were classified correctly except
for only one large-sized vehicle.
Author
Two Dimensional Flow; Traffıc; Flow Measurement; Image Processing
20060001621 Nanjing Research Inst. of Electronics Technology, Nanjing, China
A Method of Acquiring 3-D Data of an Object from Stereo Images
Dong, Yu-Ning; He, Zhen-Ya; IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP ‘87);
Volume 1; 1987, pp. 7.14.1-7.14.4; In English; See also 20060001583; Copyright; Avail.: Other Sources
A method of acquiring 3-D data of an object via binocular technique is presented in this paper. It attempts to improve the
accuracy of 3-D measurement of the passive technique and the main feature of this method are: 1) accurate (subpixel) location
of the noisy image edge segments by parameterization; 2) using generalized cones for 3-D measurement with an accuracy
beyond resolution limit of the digital measurement when using a passive binocular technique.
Author
Image Processing; Binoculars
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