نتایج جستجو برای: estimation

تعداد نتایج: 262665  

2015
Adam Strupczewski Blazej Czuprynski Wladyslaw Skarbek Marek Kowalski Jacek Naruniec

We propose to use a state-of-the-art visual odometry technique for the purpose of head pose estimation. We demonstrate that with small adaptation this algorithm allows to achieve more accurate head pose estimation from an RGBD sensor than all the methods published to date. We also propose a novel methodology to automatically assess the accuracy of a tracking algorithm without the need to manual...

2008
Hongdong Li Richard Hartley Jae-hak Kim

A well-known theoretical result for motion estimation using generalized camera model is that 17 corresponding image rays can be used to solve linearly for the motion of a generalized camera. However, this paper shows that for many common configurations of the generalized camera models (e.g., multi-camera rig, catadioptric camera etc.), such a simple 17-point algorithm does not exist, due to som...

2003
Stefano Cioni Giovanni Emanuele Corazza Alessandro Vanelli-Coralli

In recent years large scientific interest has been devoted to joint data decoding and parameter estimation techniques. In this paper, iterative turbo decoding joint to channel frequency and phase estimation is proposed. The phase and frequency estimator is embedded into the structure of the turbo decoder itself, keeping into consideration both turbo interleaving and puncturing. Results show tha...

2004
Koichiro Kamada Heinz Herrmann Thilo Liebig Karl-Heinz Tödter

This paper examines the methods used by the Bank of Japan for the estimation of the output gap. Attention is paid to the real-time estimation problem. After reviewing the evolution of output gap estimation at the Bank, I discuss advantages and disadvantages of the various output gap measures. First, I examine the usefulness of the output gap for inflation forecasting and show that the real-time...

2003
Kjetil Moløkken-Østvold Magne Jørgensen

This paper summarizes estimation knowledge through a review of surveys on software effort estimation. Main findings were that: (1) Most projects (60-80%) encounter effort and/or schedule overruns. The overruns, however, seem to be lower than the overruns reported by some consultancy companies. For example, Standish Group’s ‘Chaos Report’ describes an average cost overrun of 89%, which is much h...

Journal: :EURASIP J. Wireless Comm. and Networking 2006
Valentina De Angelis Luciano Izzo Antonio Napolitano Mario Tanda

A new algorithm to estimate amplitude, delay, phase, and frequency offset of a received signal is presented. The frequency-offset estimation is performed by maximizing, with respect to the conjugate cycle frequency, the projection of the measured conjugatecyclic-autocorrelation function of the received signal over the true conjugate second-order cyclic autocorrelation. It is shown that this est...

1996
Norbert Krüger Michael Pötzsch Thomas Maurer Michael Rinne

We present a new system for the automatic determination of the position , size and pose of the head of a human gure in a camera image. The system is an extension of the well{known face recognition system WFK] to pose estimation. The pose estimation system is characterized by a certain reliability and speed. We improve this performance and speed with the help of statistical estimation methods. I...

Journal: :EURASIP J. Adv. Sig. Proc. 2004
Yilong Yin Jie Tian Xiukun Yang

It is important to estimate the ridge distance accurately, an intrinsic texture property of a fingerprint image. Up to now, only several articles have touched directly upon ridge distance estimation. Little has been published providing detailed evaluation of methods for ridge distance estimation, in particular, the traditional spectral analysis method applied in the frequency field. In this pap...

2007
Xuesong Le Ruben Gonzalez

This paper presents a robust algorithm for segmentation of moving objects in video, that first solves the global camera motion estimation problem and then processing the local object motion using the global motion parameters. This is work in progress. Key Words-Camera motion, global motion, extraction, segmentation

B‎. ‎L‎. ‎S‎. Prakasa Rao,

We derive moment inequalities for the supremum of empirical processes of U-Statistic structure and give application to kernel type density  estimation ‎and estimation of the distribution function for functions of observations.  

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