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Direct multi-resolution estimation of ego-motion and structure from motion
The paper describes an iterative algorithm that estimates the motion of a camera through an environment directly from brightness derivatives of an image pair. A global ego-motion constraint is combined with the local brightness constancy constraint to relate local surface models with the global ego-motion model and local brightness derivatives. In ....
Authors:Hanna;K.J.Publisher:Visual Motion;1991.;Proceedings of the IEEE Workshop onConference Date:7-9 Oct. 1991ISSN:0-8186-2153-2Total Page:ix+349
Data standards: the link between design and test
The author discusses the design to test data representations that are being developed by Rome Laboratory in concert with representatives of the computer aided design/test (CAD/CAT) industry and various US Department of Defense and government agencies under the auspices of the IEEE. Few standard representations of engineering, design, and test infor....
Authors:Hanna;J.P.Publisher:AUTOTESTCON '92. IEEE Systems Readiness Technology Conference;Conference RecordConference Date:21-24 Sept. 1992ISSN:0-7803-0643-0Total Page:xxx+463
Microwave filters based on coupled MSW resonators and their applications
A novel and simple technique for realizing tunable and planar microwave bandpass filters has been investigated. The use of coupled magnetostatic wave (MSW) resonators for realizing these filters is demonstrated. Due to their low magnetic losses, epitaxially grown single-crystal yttrium iron garnet (YIG) films are used for the MSW propagation. The i....
Authors:Hanna;S.M.Publisher:Ultrasonics Symposium;1988. Proceedings.;IEEE 1988Conference Date:2-5 Oct. 1988ISSN:Total Page:2 vol. 1113
Harmonics and technical barriers in adjustable speed drives
The presence of harmonics in both six-pulse and twelve-pulse converter systems is analyzed emphasising the differences between three-phase and six-phase machines in suppressing these harmonics. The effect of the use of harmonic filters and special transformer-winding arrangements in reducing harmonics is also discussed. Harmonics measurements for t....
Authors:Hanna;R.A.Publisher:Petroleum and Chemical Industry Conference;1988;Record of Conference Papers.;Industrial Applications Society 35th AnnualConference Date:12-14 Sept. 1988ISSN:Total Page:279
Improvements in electronic hardware design productivity through design automation and the use of simulation
Three electronic hardware products were developed with a goal of achieving first-pass success and higher design productivity through design automation and the use of simulation without relying on the conventional prototype stage. The three designs cover a wide range of electronic hardware for aerospace applications: a dual processor flight-worthy m....
Authors:Hanna;W.A.Publisher:Aerospace and Electronics Conference;1989. NAECON 1989.;Proceedings of the IEEE 1989 NationalConference Date:22-26 May 1989ISSN:Total Page:4 vol. 2102
RF and microwave applications to SAW propagation in magnetic films
Surface acoustic wave (SAW) propagation in magnetic films can be implemented in different applications in the RF and microwave frequency ranges. Two applications based on the magnetoelastic interaction between the SAW and the magnetic spin system are discussed. First, the change in the phase velocity of the SAW was used in tuning RF delay-line base....
Authors:Hanna;S.M.Publisher:Ultrasonics Symposium;1989. Proceedings.;IEEE 1989Conference Date:3-6 Oct. 1989ISSN:Total Page:2 vol. 1248
Harmonics and technical barriers in adjustable speed drives
The author reviews the characteristics of harmonics produced by an adjustable-speed drive system as well as methods of reducing them, and presents installation examples. He analyzes the presence of harmonics in both six-pulse and twelve-pulse converter systems and highlights the differences between three-phase and six-phase machines in suppressing ....
Authors:Hanna;R.A.Publisher:Industry Applications Society Annual Meeting;1989.;Conference Record of the 1989 IEEEConference Date:1-5 Oct. 1989ISSN:Total Page:2 vol. 2418
On the generalized eigenvectors of a class of moment matrices
The eigenvalue problem of a class of lower triangular moment matrices is considered. It is found that the Jordan matrix can have two types of Jordan blocks at most. The modal matrix is shown to have a peculiar structure where the progenitors in the column partitions corresponding to the Jordan blocks have a certain pattern.
Authors:Hanna;M.T.Publisher:Circuits and Systems;1993.;Proceedings of the 36th Midwest Symposium onConference Date:16-18 Aug. 1993ISSN:0-7803-1760-2Total Page:2 vol. xxxv+1565
Development of computer assisted learning to assist in the teaching of image processing and image coding
A Computer Aided Learning program has been written for the Windows 3.1 environment to assist in the teaching of Image Processing and Image Coding to final year Electronic Engineering students. The program operates in two modes: a user controlled image processing mode, and a step by step series of illustrated lessons. The user can swap between these....
Authors:Hanna;H.Publisher:Multi-Media Engineering Education Proceedings;1994.;IEEE First International Conference onConference Date:6-8 July 1994ISSN:0-7803-1963-XTotal Page:xii+475
Windows with rapidly decaying sidelobes and steerable sidelobe dips
A window in the form of a sum of cosine terms is considered and the temporal weights are evaluated analytically so that it can have rapidly decaying sidelobes as well as steerable sidelobe dips. An analytic expression is derived so that the window designer can exploit the trade-off between a high sidelobe falloff rate (SLFOR) and many steerable sid....
Authors:Hanna;M.T.Publisher:Acoustics;Speech;and Signal Processing;1994. ICASSP-94.;1994 IEEE International Conference onConference Date:19-22 April 1994ISSN:0-7803-1775-0Total Page:6 vol. 3382
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