scholarly journals Egomotion Estimation Using Binocular Spatiotemporal Oriented Energy

2013 ◽  
Author(s):  
Hao Zhong ◽  
Richard Wildes
Keyword(s):  
Egomotion Estimation ◽  
Oriented Energy

A Spectral Graph Theoretical Approach to Oriented Energy Features

2017 ◽  
Vol 31 (01) ◽  
pp. 1755001 ◽  
Author(s):  
Güleser Kalaycı Demir
Keyword(s):  
Theoretical Approach ◽  
Graph Laplacian ◽  
Texture Segmentation ◽  
Contour Detection ◽  
Feature Extraction Method ◽  
Spectral Graph ◽  
Graph Theoretical Approach ◽  
Novel Method ◽  
Oriented Energy ◽  
Complex Valued

In this work, we propose a novel method for determining oriented energy features of an image. Oriented energy features, useful for many machine vision applications like contour detection, texture segmentation and motion analysis, are determined from the filters whose outputs are enhanced at the edges of the image at a given orientation. We use the eigenvectors and eigenvalues of graph Laplacian for determining the oriented energy features of an image. Our method is based on spectral graph theoretical approach in which a graph is assigned complex-valued edge weights whose phases encode orientation information. These edge weights give rise to a complex-valued Hermitian Laplacian whose spectrum enables us to extract oriented energy features of the image. We perform a set of numerical experiments to determine the efficiency and characteristics of the proposed method. In addition, we apply our feature extraction method to texture segmentation problem. We do this in comparison with other known methods, and show that our method performs better for various test textures.

A Research on the Energy-Saving Operating Mode of Large-Scaled Public Building Based on Energy Management Contract in Shaanxi Province

2012 ◽  
Vol 517 ◽  
pp. 281-285
Author(s):  
Xiao Jie Zhang ◽  
Qi Song
Keyword(s):  
Energy Saving ◽  
Energy Management ◽  
Operating Mode ◽  
Shaanxi Province ◽  
Public Buildings ◽  
Public Building ◽  
Management Contract ◽  
Oriented Energy

The implementation of the mechanism of Energy Management Contract is of great significance in promoting the energy saving for buildings in China. Combining relevant contents in the Twelfth Five-year Plan of Shaanxi Province, this dissertation introduces the operating mode of the mechanism of EMC, analyses the main problems existing in the field of energy saving in large-scaled public buildings in Shaanxi Province, brings forward the innovative mode for developing market-oriented energy saving with Shaanxi Provincial characteristics based on EMC mechanism, and hopefully provides theoretical bases for the applications of EMC mechanism in the field of energy saving in large-scaled public buildings in our province.

scholarly journals Discrete EKF with pairwise Time Correlated Measurement Noise for Image-Aided Inertial Integrated Navigation

2014 ◽  
Vol II-2 ◽  
pp. 61-66 ◽  
Author(s):  
N. S. Gopaul ◽  
J. G. Wang ◽  
B. Hu
Keyword(s):  
Kalman Filter ◽  
Inertial Navigation ◽  
Measurement Noise ◽  
Integrated Navigation ◽  
Process Noise ◽  
Shaping Filter ◽  
Egomotion Estimation ◽  
Simulation Results ◽  
The One ◽  
Better Than

An image-aided inertial navigation implies that the errors of an inertial navigator are estimated via the Kalman filter using the aiding measurements derived from images. The standard Kalman filter runs under the assumption that the process noise vector and measurement noise vector are white, i.e. independent and normally distributed with zero means. However, this does not hold in the image-aided inertial navigation. In the image-aided inertial integrated navigation, the relative positions from optic-flow egomotion estimation or visual odometry are <i>pairwise</i> correlated in terms of time. It is well-known that the solution of the standard Kalman filter becomes suboptimal if the measurements are colored or time-correlated. Usually, a shaping filter is used to model timecorrelated errors. However, the commonly used shaping filter assume that the measurement noise vector at epoch <i>k</i> is not only correlated with the one from epoch <i>k</i> &ndash; 1 but also with the ones before epoch <i>k</i> &ndash; 1 . The shaping filter presented in this paper uses Cholesky factors under the assumption that the measurement noise vector is pairwise time-correlated i.e. the measurement noise are only correlated with the ones from previous epoch. Simulation results show that the new algorithm performs better than the existing algorithms and is optimal.

Research on a Strategy-Oriented Energy Saving and Emission Reduction Performance Management System of the Party and Government Leaders of Counties and Municipalities

2012 ◽  
Vol 531-532 ◽  
pp. 732-735
Author(s):  
Jing Kun Zhou ◽  
Zhong Xian Duan ◽  
Bing Cai Yu
Keyword(s):  
Performance Evaluation ◽  
Energy Saving ◽  
Performance Management ◽  
Emission Reduction ◽  
Management System ◽  
Performance Management System ◽  
Evaluation Indicator ◽  
The Government ◽  
Oriented Energy ◽  
Establishment Process

This article describes a strategy-oriented energy saving and emission reduction performance management system model of the Party and government leaders of counties and municipalities (hereinafter referred to as "the Leaders") consisting of a strategic formulation sub-system of the government of counties and municipalities, a strategy-oriented energy saving and emission reduction performance evaluation entity design sub-system of the Leaders, a strategy-oriented energy saving and emission reduction performance evaluation indicator selection sub-system of the Leaders, a strategy-oriented dynamic circle sub-system of important parts of energy saving and emission reduction performance management of the Leaders, and a strategy-oriented energy saving and emission reduction performance management guarantee sub-system, and give a brief description of main contents and establishment process of every sub-system

Sign in / Sign up

Export Citation Format

Share Document