Transient ischemic attack （TIA） is a temporary event, which portends a higher risk of a disabling stroke following the TIA. However, the evaluation and management of TIA vary worldwide and is debated and controversi...Transient ischemic attack （TIA） is a temporary event, which portends a higher risk of a disabling stroke following the TIA. However, the evaluation and management of TIA vary worldwide and is debated and controversial. With the development of brain imaging, particularly diffusion weighted imaging-magnetic resonance imaging （DWI-MRI）, the diagnosis of TIA changed from time-based definition to a tissue-based one. DWI-MRI be-came a mandatory tool in the TIA workup. The DWI-MRI provides not only the evidence to distinguish between TIA and acute ischemic stroke, fur-thermore it predicts TIA patients who are at higher risk of disabling stroke, which can be prevented by an immediate evaluation and treatment of TLA.展开更多
Transient imaging has recently made a huge impact in the computer graphics and computer vision fields.By capturing,reconstructing,or simulating light transport at extreme temporal resolutions,researchers have proposed...Transient imaging has recently made a huge impact in the computer graphics and computer vision fields.By capturing,reconstructing,or simulating light transport at extreme temporal resolutions,researchers have proposed novel techniques to show movies of light in motion,see around corners,detect objects in highly-scattering media,or infer material properties from a distance,to name a few.The key idea is to leverage the wealth of information in the temporal domain at the pico or nanosecond resolution,infor-mation usually lost during the capture-time temporal integration.This paper presents recent advances in this field of transient imaging from a graphics and vision perspective,including capture techniques,analysis,applications and simulation.展开更多
Transient imaging is a technique in photography that records the process of light propagation before it reaches a stationary state such that events at the light speed level can be observed. In this review we introduce...Transient imaging is a technique in photography that records the process of light propagation before it reaches a stationary state such that events at the light speed level can be observed. In this review we introduce three main models for tran- sient imaging with a time-of-flight （ToF） camera： correlation model, frequency-domain model, and compressive sensing model. Transient imaging applications usually involve resolving the problem of light transport and separating the light rays arriving along different paths. We discuss two of the applications： imaging objects inside scattering media and recovering both the shape and texture of an object around a corner.展开更多
文摘Transient ischemic attack （TIA） is a temporary event, which portends a higher risk of a disabling stroke following the TIA. However, the evaluation and management of TIA vary worldwide and is debated and controversial. With the development of brain imaging, particularly diffusion weighted imaging-magnetic resonance imaging （DWI-MRI）, the diagnosis of TIA changed from time-based definition to a tissue-based one. DWI-MRI be-came a mandatory tool in the TIA workup. The DWI-MRI provides not only the evidence to distinguish between TIA and acute ischemic stroke, fur-thermore it predicts TIA patients who are at higher risk of disabling stroke, which can be prevented by an immediate evaluation and treatment of TLA.
基金This research has been partially funded by DARPA(project REVEAL),the European Re-search Council(Consolidator Grant,project CHAMELEON),and the Spanish Ministerio de Economía y Competitividad projects TIN2016-78753-P,TIN2016-79710-P and TIN2014-61696-EXPJulio Marco was additionally funded by a grant from the Gobierno de Aragón.
文摘Transient imaging has recently made a huge impact in the computer graphics and computer vision fields.By capturing,reconstructing,or simulating light transport at extreme temporal resolutions,researchers have proposed novel techniques to show movies of light in motion,see around corners,detect objects in highly-scattering media,or infer material properties from a distance,to name a few.The key idea is to leverage the wealth of information in the temporal domain at the pico or nanosecond resolution,infor-mation usually lost during the capture-time temporal integration.This paper presents recent advances in this field of transient imaging from a graphics and vision perspective,including capture techniques,analysis,applications and simulation.
基金Project supported by the National Natural Science Foundation of China （Nos. 61561005 and 61531014）, the National Key Foundation for Exploring Scientific Instrument （No. 2013YQ140517）, and the Natural Science Foundation of Guangxi Province, China （No. 2015GXNSFAA139284）
文摘Transient imaging is a technique in photography that records the process of light propagation before it reaches a stationary state such that events at the light speed level can be observed. In this review we introduce three main models for tran- sient imaging with a time-of-flight （ToF） camera： correlation model, frequency-domain model, and compressive sensing model. Transient imaging applications usually involve resolving the problem of light transport and separating the light rays arriving along different paths. We discuss two of the applications： imaging objects inside scattering media and recovering both the shape and texture of an object around a corner.
