Results 271 to 280 of about 33,305 (299)
Some of the next articles are maybe not open access.
Shadow of an Exoplanet Detected
Science, 1999ASTRONOMYFor the first time, a planet in another star system has been seen to cross the face of its parent star. The transit, as it is called, is the most direct glimpse yet of an extrasolar planet. It has also allowed astronomers to pin down the object's mass, size, and density--characteristics that could only be guessed before--which leave little ...
openaire +1 more source
Spectral anomaly detection in deep shadows
Applied Optics, 2010Although several hyperspectral anomaly detection algorithms have proven useful when illumination conditions provide for enough light, many of these same detection algorithms fail to perform well when shadows are also present. To date, no general approach to the problem has been demonstrated.
Andrey V, Kanaev, Jeremy, Murray-Krezan
openaire +2 more sources
Detecting photographic composites using shadows
2009 IEEE International Conference on Multimedia and Expo, 2009Image compositing technology has become popular for tampering with digital photographies. We describe how such composites can be detected by enforcing the geometric and photometric constraints from shadows. In particular, we explore (i) the imaged shadow relations that are modeled by the planar homology, and (ii) the color characteristics of the ...
Wei Zhang 0031 +4 more
openaire +1 more source
Workpiece localization with shadow detection and removing
2013 IEEE International Conference on Robotics and Biomimetics (ROBIO), 2013This paper presents a new approach to detect and remove the shadows for workpiece localization, which is with an extensive application in automatic assembly system. However, the shadows of workpiece will badly affect this procedure as the contour of the shadow has the same shape with the workpiece itself in the image. The localization system treats the
Zhengke Qin +3 more
openaire +1 more source
Research on method for moving shadow detection
2017 12th International Conference on Intelligent Systems and Knowledge Engineering (ISKE), 2017In the field of video tracking, the shadow will seriously interfere with the moving foreground extraction. As the moving shadow recognition has always been an inevitable topic in the video tracing field, this paper researches three kinds of traditional shadow detection algorithm and some improvement ideas and methods, and analyzes the advantages and ...
Yanfeng Wang, Ningsheng Gong, Xilong Gu
openaire +1 more source
Enhanced Shadow Detection for 3D Ultrasound
2014Ultrasound imaging offers a fast, convenient and save instrument to conduct patient examinations for various medical scenarios. However, depending on the target region, occluding bone segments and other materials cause large and undesirable shadowing artifacts.
Matthias Noll +2 more
openaire +1 more source
Systematic static shadow detection
Proceedings of the 17th International Conference on Pattern Recognition, 2004. ICPR 2004., 2004Jian Yao 0003, Zhongfei (Mark) Zhang
openaire +1 more source
Revisiting Shadow Detection: A New Benchmark Dataset for Complex World
IEEE Transactions on Image Processing, 2021Xiaowei Hu +2 more
exaly
Exploring better target for shadow detection
Knowledge-Based Systems, 2023Wen Wu 0008 +3 more
openaire +1 more source