Results 271 to 280 of about 91,384 (299)

Accuracy of Determining the Coordinates of Points Observed by Camera

2014
In this paper analysis of accuracy of determining the coordinates of points on the plane template in the shape of rectangle is presented. These points lie at the corners of squares with side of 8 mm. Images of these points were obtained using Edimax IC-7100P camera from three different points of view and analysed.
Tadeusz Szkodny, Artur Meller, Krzysztof Palka   +2 more
openaire   +1 more source

Accuracy evaluation of fixed-point LMS algorithm

2004 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2004
The implementation of adaptive filters with fixed-point arithmetic requires the computation quality to be evaluated. The accuracy may be determined by calculating the global quantization noise power in the system output. A new model for evaluating analytically the global noise power in the LMS algorithm and in the NLMS algorithm is developed.
Rocher, Romuald, Menard, Daniel, Sentieys, Olivier, Scalart, Pascal   +3 more
openaire   +1 more source

Accuracy of point cyclic reductions for poisson's equation

Journal of Computational Physics, 1981
Abstract Point cyclic reduction is a very fast method for solving Helmholtz's equation on a rectangle. However, it involves forming an approximation of the discretized equations, and by a fairly simple analysis we show conclusively that for the special case of Poisson's equation on a square the solution computed by point cyclic reductions does not ...
openaire   +1 more source

On the Fixed-Point Accuracy Analysis of FFT Algorithms

IEEE Transactions on Signal Processing, 2008
In this paper, we investigate the effect of fixed-point arithmetics with limited precision for different fast Fourier transform (FFT) algorithms. A matrix representation of error propagation model is proposed to analyze the rounding effect. An analytic expression of overall quantization loss due to the arithmetic quantization errors is derived to ...
Wei-Hsin Chang, Truong Q. Nguyen
openaire   +1 more source

Fiducial Point Placement and the Accuracy of Point-based, Rigid Body Registration

Neurosurgery, 2001
To demonstrate that the shape of the configuration of fiducial points is an important factor governing target registration error (TRE) in point-based, rigid registration.We consider two clinical situations: cranial neurosurgery and pedicle screw placement.
J B, West, J M, Fitzpatrick, S A, Toms, C R, Maurer, R J, Maciunas   +4 more
openaire   +2 more sources

Where are you pointing?

Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, 2010
Deictic reference -- pointing at things during conversation -- is ubiquitous in human communication, and should also be an important tool in distributed collaborative virtual environments (CVEs). Pointing gestures can be complex and subtle, however, and pointing is much more difficult in the virtual world.
Nelson Wong, Carl Gutwin
openaire   +1 more source

Improving the accuracy of the multiple point stimulation technique

2009
Publisher Summary This chapter reviews that motor unit number estimation (MUNE) is a useful technique for diagnosing and monitoring the progression of diseases, in which motor neuron or axonal degeneration is a major feature. Multiple point stimulation (MPS) is one of the most widely used MUNE techniques.
Cheryl L, Porter, Arodi, Alvarez, Kelvin E, Jones, Lora A, Major, K Ming, Chan   +4 more
openaire   +2 more sources

Precision CMG Control for High-Accuracy Pointing

Journal of Spacecraft and Rockets, 1973
Extremely precise gimbal control, as is necessary for CMG (Control Moment Gyro) high-accuracy-pointing control systems, is obtainable and has been demonstrated for large single-gimbal CMGs. A proportional-plusintegral control law, where the integral gain is substantially greater than the gradient of the gimbal "stiction" profile, makes possible wide ...
openaire   +1 more source

The accuracy of point-of-care glucose measurement

Annals of Clinical Biochemistry: International Journal of Laboratory Medicine, 2012
openaire   +2 more sources

Evaluation of Accuracy: A Comparative Study Between Finger Pointing and Stylus Pointing Using Mid-Air Input

Lecture Notes in Networks and Systems, 2023
Zeeshan Haider Malik
exaly