Depth estimation

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Source Depth Estimation Using a Horizontal Array by Matched-Mode Processing in the Frequency-Wavenumber Domain

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  • This paper presents a new approach to extract ground planes from a depth map which is provided by Kinect. The proposed system applies an robust algorithm to calculate the depth gradient maps (GDM) with high accuracy. Then the correct partition provides a set of candidates for the selection of ground. Last, it uses an efficient filter to find out the truth ground planes. The results prove the certainty of the algorithm in both cases consisting of the perfect data and actual scenes. For first case, the percentage of truth ground pixel detection R1 is common over 90%.

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  • In this paper, we present the study results of using the directional analytic signal method of gravity gradient tensor (GGT) and the Euler deconvolution of the directional analytic signals to determine location and estimate the depth of fault systems in the Pre-Cenozoic basement in order to improve the efficiency of Pre-Cenozoic basement structure.

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  • This book is intended to provide an introduction to the technical concepts of wastewater treatment. It assumes that the reader has at least a first-year undergraduate level of scientific understanding but not necessarily any previous knowledge of wastewater treatment. A reading list is provided at the end of the book for more in-depth information on the topics that are introduced here. The authors are based in the United Kingdom and therefore the scientific units and terminology that are used in this book are those which are common in that country....

    pdf80p tuanloc_do 04-12-2012 37 9   Download

  • Computer vision is one of the most studied subjects of recent times with paramount focus on stereo vision. Lot of activities in the context of stereo vision are getting reported spanning over vast research spectrum including novel mathematical ideas, new theoretical aspects, state of the art techniques and diverse range of applications.

    pdf236p greengrass304 15-09-2012 29 4   Download

  • Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí sinh học đề tài : Denoising Algorithm for the 3D Depth Map Sequences Based on Multihypothesis Motion Estimation

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  • Note that when node 7 produces a tuple that joins with the static table, three transmissions result; this is the same as if the original data was sent up the routing tree in the naïve or single-node case. In the worst case, there would have been two extra tuples: if node 5 produced a tuple which joined with a tuple on node 7 a total of 4 transmis- sions would have been performed. In general, no more than 2 + depth transmissions will be required, as any pair of nodes in the same group differ by no more...

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  • In this paper, we present the rapid method for determining the depth distribution of a sedimentary basin by combining the FFT-based and space domain techniques in gravity data interpretation. The method is tested on two 3D synthetic models which density contrast is constant and exponential variation with depth. Then, the method is applied to determine the depth distribution of Nam Con Son sedimentary basin in Vietnam. The obtained results coincide well with theoretical models and seismic data. The computation speed of the method is much faster than that of space domain technique.

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  • WAM (WaveModeling) is a third generation wave model developed by WAMDI Group which describes the evolution of a two-dimensional ocean wave spectrum under the effects of winds, currents, bottom and non-linear wave-wave interactions. The model runs for deep and shallow waters and includes depth and current refraction. This study used the WAM cycle 4.5 with model domain which is covered from 990E to 1210E and 00N to 250N with a resolution of ∆X = ∆Y = 0.250 .

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  • In this paper the authors present the error estimation in determining main parameters of earthquake hypocenter based on solving the system of linear equations, expressing the relationship between earthquake coordinates and the coordinates of the seismic stations. The results of the error estimation in determining the epicenter coordinates and the focus depth of the earthquakes recorded by the system of 30 seismic stations in Vietnam are presented, interpreted and compared with the results of the previous studies.

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  • Mechanical resistance of a soil to failure has been widely used to estimate the degree of soil compaction. Our previous study showed that the magnitude of force measured by the horizontally operated penetrometer depends on the soil failure mode in front of the sensor tip.

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  • Forests play a major role in global carbon (C) cycle, and the carbon density (CD) could reflect its ecological function of C sequestration. Study on the CD of different forest types on a community scale is crucial to characterize in depth the capacity of forest C sequestration.

    pdf358p phoebe75 01-02-2013 36 13   Download

  • For small join tables, REED always chooses to push them into the network if their selectivity is smaller than one. For intermediate tables, the REED query optimizer makes a decision as to whether to push the join into the network based on the estimated selectivity of the predicate (which may be learned from past performance or gathered statistics, or estimated using basic query optimization tech- niques [28]) and the average depth of sensor nodes in the network.

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  • In recent years, under impacts of human activities and climate change, flood has been increased in both the frequency and magnitude, causing lots of damages to people. This study presents a method to evaluate the direct spatial damages of flooding based on inundation depth and land use data. Damage functions for different types of land use arc selected and applied. Matlab strings and GIS are combined to calculate damage in monitery term. The method is applied for estimating loss caused by thc flood event November 1999 for Huong rivce basin.

    pdf10p dem_thanh 22-12-2012 16 3   Download

  • · Physical vs. monetary accounts. Physical accounts only include information about natural characteristics of the environment and its use; the size of forests or mineral reserves, the quality of water or air, the depth of topsoil, etc.. In contrast, monetary accounts place an economic value on those characteristics or their use, so as to understand the role they play in the economy. Given the difficulty of estimating the monetary value of certain aspects of the environment, some individuals (and countries) advocate development of only physical accounts. · Integrated accounts vs.

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  • This approach is applied to constrain the magnitude of the maximum horizontal stress at some interest depths (3900 m, 4100 m, 4300 m and 4500 m) of the basement reservoirs at the White Tiger field, Cuu Long basin, Vietnam from the program STRESS POLYGON. The occurrence of DITFs and/or BOs proved to be useful in estimating stresses around the wellbore, especially the maximum horizontal stress magnitude.

    pdf9p everydaywish 24-12-2018 2 0   Download


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