structured light based methods
Structured light techniques for 3D surface reconstruction in robotic tasks
... Structured light techniques can take many forms; a review of current tech- niques is provided in ...of structured patterns based on their coding ...Box based on projecting dot patterns ...
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A Novel Calibration Method Based on Vanishing Points and Lines for Linear Structured Light Vision Sensor
... linear structured light vision sensor is proposed in this ...the light plane. Here, the forth parameter of the light plane is use the camera extrinsic parameters and the known coordinates in ...
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Calibration method for line structured light multi vision sensor based on combined target
... line-structured light vision sensor. The existing calibration methods depend on special calibration equipments, whose accuracy determines the calibration ...those methods. In order to solve ...
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Real time 3D Face Recognition using Line Projection and Mesh Sampling
... algorithms based on geometry alone have been described with recognition rates up to 97% [4, 13] for selected models with low levels of ...different structured light images in which the person could ...
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Efficient and Low-Cost 3D Structured Light System Based on a Modified Number-Theoretic Approach
... is based ideally on imaging only a unique sinusoidal pattern while object depth is obtained from Fourier transformation computation, filtra- tion in spatial frequency domain, and inverse Fourier trans- formation ...
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Surface scanning with uncoded structured light sources
... manual methods have been devised, some using calibration charts or objects, others deriving the parameters from the target object ...calibration based on the epipolar geometry of the two-camera ...
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A new calibration method for line-structured light vision sensors based on concentric circle feature
... Our proposed calibration method has nearly the same accuracy with the 2D method and the 1D method, and better than the 3D method. Further- more, as the target utilized in our proposed approach is a plane with several ...
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An Efficient 3D Imaging using Structured Light Systems.
... passive methods is triangulation using two or more 2D image planes generated from some number of cameras (usually 2 ...passive methods, however, reconstruction process is complicated when we intend to ...
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The Mathematical Model and Applications of Coded Structured Light System for Object Detecting
... of structured light sensing system and generic methods of gaining depth ...these methods whose derived relations are complex, and errors are ...new structured light mathematical ...
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Conversion of a 2-D Image to 3-D Image and Processing the Image Based on Coded Structured Light
... Abstract— Structured light image systems have been used effectively for precise measurement of 3-D surfaces in a computer ...the light codes is crucial at this point for colour projection, as it is ...
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Applied sequential search algorithm for compression encryption of high resolution structured light 3D data
... compression methods based on high-frequency sub-bands compressed by the Minimize-Matrix-Size Algorithm (MMS) and decompressed by the Limited-Sequential Search Algorithm ...
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Multimode fibre : light sheet microscopy at the tip of a needle
... technique, based on digital holography, enables delivery of the light-sheet through a multimode optical fibre – an optical element with extremely small footprint, yet permitting complex control of ...
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Research on image enhancement of light stripe based on template matching
... of light stripe in a good light stripe image should be uniform and have high ...the light stripe ...when structured light is projected onto the sur- ...of light stripes which are ...
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Low cost structured-light based 3D surface reconstruction
... Averaging all the cases shown, the global MSE obtained is of 0.267 mm, that is, our system is prov- en to easily achieve sub-millimeter accuracy at any of the working distances tested. This is a good trade-off between ...
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Diagnosing migraine in research and clinical settings: The validation of the Structured Migraine Interview (SMI)
... The results of validity testing of the SMI show that compared to clinical diagnosis the SMI is highly sensi- tive (0.87) but less specific (0.58) in identifying migraine cases. This could be because almost all subjects ...
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Qualitative methods in psychotherapy outcome research
... Within the field of counselling and psychotherapy research, McKenna and Todd (1997) used timelines to investigate how people accessed therapy at different times in their lives. Participants were asked to construct a ...
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Kemant (ness): The Quest for Identity and Autonomy in Ethiopian Federal Polity
... Multi-nationality, a key terminology in Ethiopian society and politics, is virtually a recent vintage, emerged since 1990s, of political expression of accepting and celebrating the plurality of Ethiopian societies in ...
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Light matter interactions on nano structured metallic film
... of light through pattered metal ...of light and so no transmission would immediately be ...transmitted light, and the bottom image graphs the transmission spectra for different incident ...that ...
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Methodological Issues Pertaining to the Application of Qualitative Techniques in Forced Migration Studies
... qualitative methods are readily available to social scientists, it is found difficult and problematic to use such methods without subjecting them to a scanning ...qualitative methods used by social ...
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Fast 3D Reconstruction using Structured Light Methods
... The recorded image is generated in the sensor plane of the camera which is behind the lens perpendicular to the camera axis. It may, for example, consists of an array of charge-coupled device (CCD) sensors that capture ...
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