Results 21 to 30 of about 4,002,274 (293)

Detection of image structures using the Fisher information and the Rao metric [PDF]

, 2004
In many detection problems, the structures to be detected are parameterized by the points of a parameter space. If the conditional probability density function for the measurements is known, then detection can be achieved by sampling the parameter space ...
Maybank, Stephen J.
core   +2 more sources

Research on road vehicle and lane line detection based on improved YOLOv4-tiny algorithm [PDF]

SHS Web of Conferences, 2022
In order to improve the speed of road vehicle and lane line detection, a road vehicle and lane line detection method with improved YOLOv4-tiny algorithm is proposed by using K-means++ clustering algorithm instead of the original K-means algorithm.
Liu Hanwen, Wang Hongxia, Zhou Kui, Long Yun   +3 more
doaj   +1 more source

Dark line detection with line width extraction [PDF]

2008 15th IEEE International Conference on Image Processing, 2008
Automated line detection is a classical image processing topic with many applications such as road detection in remote images and vessel detection in medical images. Many traditional line detectors, such as Gabor filter, the second order derivative of Gaussian and Radon transform will response not only to lines but also to edges, e.g.
Qin Li, Lei Zhang, Jane You, David Zhang, Prabir Bhattacharya   +4 more
openaire   +1 more source

Sensitive limits on the abundance of cold water vapor in the DM Tau protoplanetary disk [PDF]

, 2010
We performed a sensitive search for the ground-state emission lines of ortho- and para-water vapor in the DM Tau protoplanetary disk using the Herschel/HIFI instrument. No strong lines are detected down to 3sigma levels in 0.5 km/s channels of 4.2 mK for
Bachiller, R., Baudry, A., Bell, T. A., Benedettini, M., Benz, A. O., Bergin, E. A., Bjerkeli, P., Blake, G. A., Bontemps, S., Braine, J., Brinch, C., Bruderer, S., Caselli, P., Cernicharo, J., Codella, C., Daniel, F., de Graauw, Th., di Giorgio, A. M., Dominik, C., Doty, S. D., Encrenaz, P., Fich, M., Fogel, J., Fuente, A., Giannini, T., Goicoechea, J. R., Hartogh, P., Helmich, F., Herczeg, G. J., Herpin, F., Hogerheijde, M. R., Jacq, T., Jellema, W., Johnstone, D., Jorgensen, J. K., Kristensen, L. E., Larsson, B., Lis, D., Liseau, R., Marseille, M., McCoey, C., Melnick, G., Neufeld, D., Nisini, B., Olberg, M., Panic, O., Parise, B., Pearson, J. C., Plume, R., Risacher, C., Santiago-Garcia, J., Saraceno, P., Shipman, R., Stutzki, J., Szczerba, R., Tafalla, M., Tielens, A. G. G. M., van der Tak, F., van Kempen, T. A., van~Dishoeck, E. F., Visser, R., Wampfler, S. F., Wyrowski, F., Yildiz, U. A.   +63 more
core   +8 more sources

Line-Based Stereo SLAM by Junction Matching and Vanishing Point Alignment

IEEE Access, 2019
In this paper, we propose a stereo simultaneous localization and mapping (SLAM) method based on line segments. For the front-end module of SLAM, we designed a novel method based on the coplanar junction detection, description, and matching.
Jiayi Ma, Xinya Wang, Yijia He, Xiaoguang Mei, Ji Zhao   +4 more
doaj   +1 more source

BATSE Gamma-Ray Burst Line Search. III. Line Detectability [PDF]

The Astrophysical Journal, 1995
21 pages including tables, AASTeX, 8 figures on request from dband@ucsd ...
Band, D. L., Ford, L. A., Matteson, J. L., Briggs, M. S., Paciesas, W. S., Pendleton, G. N., Preece, R. D., Palmer, D. M., Teegarden, B. J., Schaefer, B. E.   +9 more
openaire   +2 more sources

Low-Latency Line Tracking Using Event-Based Dynamic Vision Sensors

Frontiers in Neurorobotics, 2018
In order to safely navigate and orient in their local surroundings autonomous systems need to rapidly extract and persistently track visual features from the environment.
Lukas Everding, Jörg Conradt
doaj   +1 more source

Confirming the Detection of an Intergalactic X-ray Absorber Toward PKS 2155-304 [PDF]

, 2006
We present new observations on PKS 2155-304 with the Chandra Low Energy Transmission Grating Spectrometer (LETG), using the Advanced CCD Imaging Spectrometer (ACIS).
Bregman J. N., Claude R. Canizares, Fujimoto R., Kaastra J. S., Kawahara H., Takei Y., Taotao Fang, Yangsen Yao, Yoshikawa K., Yoshikawa K., Yoshikawa K.   +10 more
core   +1 more source

A line laser detection screen design and projectile echo power calculation in detection screen area

Defence Technology, 2022
A line laser with high power as the background light source for the design of a new photoelectric detection target is proposed in this paper, aiming to improve the detection ability of the traditional photoelectric detection target under low background ...
Han-shan Li, Xiao-qian Zhang, Xue-wei Zhang, Quan-min Guo   +3 more
doaj   +1 more source

Extrinsic Calibration of 2D Laser Rangefinders Using an Existing Cuboid-Shaped Corridor as the Reference

Sensors, 2018
Laser rangefinders (LRFs) are widely used in autonomous systems for indoor positioning and mobile mapping through the simultaneous localization and mapping (SLAM) approach. The extrinsic parameters of multiple LRFs need to be determined, and they are one
Deyu Yin, Jingbin Liu, Teng Wu, Keke Liu, Juha Hyyppä, Ruizhi Chen   +5 more
doaj   +1 more source