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31.
A model-driven approach for real-time road recognition 总被引:6,自引:0,他引:6
This article describes a method designed to detect and track road edges starting from images provided by an on-board monocular
monochromic camera. Its implementation on specific hardware is also presented in the framework of the VELAC project. The method
is based on four modules: (1) detection of the road edges in the image by a model-driven algorithm, which uses a statistical
model of the lane sides which manages the occlusions or imperfections of the road marking – this model is initialized by an
off-line training step; (2) localization of the vehicle in the lane in which it is travelling; (3) tracking to define a new
search space of road edges for the next image; and (4) management of the lane numbers to determine the lane in which the vehicle
is travelling. The algorithm is implemented in order to validate the method in a real-time context. Results obtained on marked
and unmarked road images show the robustness and precision of the method.
Received: 18 November 2000 / Accepted: 7 May 2001 相似文献
32.
The investigation of the lower limb geometry using 3D sonography and magnetic resonance 总被引:1,自引:0,他引:1
Ewelina Świątek-Najwer Krzysztof Krysztoforski Szymon Łukasz Dragan Romuald Będziński 《Measurement》2012
The main aim of this work was to test the developed system of a free hand sonographic probe in the clinical conditions. The measuring system consists of navigation system tracking the position of a linear ultrasound probe and the self-developed software to control the tools and analyse the recorded data. It enables both measurement of geometrical parameters according to the self-designed template and the identification of the three dimensional shape of bone. Moreover the software provides virtual planning of surgery and supports the surgeon to execute the planned scenario in the reality. 相似文献
33.
V. Hudecek 《Journal of Mining Science》2008,44(5):464-472
The author analyses coal and gas outbursts and generalizes the available data on the approaches to solving the problematics
of these gas-dynamic events in the framework of Czech Republic Grant “Estimate of the Safety Precautions for Coal and Gas
Outburst Hazardous Strata”.
__________
Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 5, pp. 42–52, September–October, 2008. 相似文献
34.
Nicolas?BeldiceanuEmail author Mats?Carlsson Romuald?Debruyne Thierry?Petit 《Constraints》2005,10(4):339-362
This article deals with global constraints for which the set of solutions can be recognized by an extended finite automaton
whose size is bounded by a polynomial in n, where n is the number of variables of the corresponding global constraint. By reducing the automaton to a conjunction of signature
and transition constraints we show how to systematically obtain an automaton reformulation. Under some restrictions on the
signature and transition constraints, this reformulation maintains arc-consistency. An implementation based on some constraints
as well as on the metaprogramming facilities of SICStus Prolog is available. For a restricted class of automata we provide
an automaton reformulation for the relaxed case, where the violation cost is the minimum number of variables to unassign in
order to get back to a solution. 相似文献
35.
Romuald Zalubas 《Journal of research of the National Institute of Standards and Technology》1959,(3):275-278
The present state of the analysis of the first spectrum of thorium (Th I) is discussed briefly. Even and odd levels are listed in and2.2. The low even levels form terms arising from the configurations 6d2 7s2 and 6d3
7s. The Th I standard wavelengths that fit into the known level arrays are presented in Config. Design J Level Obs. g LS. g
6d27s2 a
3F 2 0.00 0.741 0.667 3 2869.26 1.074 1.083 4 4961.66 1.212 1.250 a
3P 0 2558.06 0.00 0/0 1 3865.47 1.477 1.500 2 3687.99 1.256 1.500 a
1D 2 7280.13 1.189 1.000 a
1G 4 8111.00 1.08 1.000 6d3(4F)7s a5 F 1 5563.14 0.062 0.000 2 6362.40 1.014 1.000 3 7502.29 1.253 1.250 6d3(4F)7s a
5F 4 8800.25 1.310 1.350 5 9804.81 1.366 1.400 6d3(4P)7s a
5P 1 11601.03 2.41 2.500 2 11802.94 1.721 1.833 3 12847.97 1.39 1.667 6d3 (2G)7s a
3G 3 13088.57 1.04 0.750 4 13297.42 0.98 1.050 5 14204.30 1.13 1.200 6d3 (2D)7s a
3D 1 13962.50 0.76 0.500 6d3(2H)7s a
3H 4 15493.23 0.92 0.800