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A Torsion Test for the Study of the Large Deformation Recovery of Shape Memory Polymers [PDF]
Polymer Testing, 2011 A torsion device was designed and built for testing the shape fixity and shape recovery of shape memory polymers at large deformation. A simple thermal chamber was used to regulate the thermal environment during testing and a CCD camera was used for ...
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Efficient Recovery of Shape from Texture
IEEE Transactions on Pattern Analysis and Machine Intelligence, 1983Witkin proposed a maximum likelihood model for the recovery of surface orientation from image texture. We develop two efficient algorithms for solving this shape from texture problem and compare the results of these algorithms with the algorithm described in [1].
Larry S. Davis +2 more
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Shaping the post-pandemic recovery plan
British Journal of Nursing, 2021Our teams are at the core of the NHS, but if we are to rebuild our services, we must first focus on the wellbeing of our staff, providing them with a space to heal, says Sam Foster, Chief Nurse, Oxford University Hospitals
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Affects of illumination on 3D shape recovery
2008 15th IEEE International Conference on Image Processing, 2008In the area of machine vision, shadows occur frequently in a wide variety of scenes. An inherent weakness of focus-based methods is that they require the imaged scene to have significant texture. In many real-world applications, surfaces can be smoothly shaded and lacking in detectable texture. In such cases, shape-form-focus (SFF) generates inaccurate
Saeed Muhammad Mannan +2 more
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Investigation on Effectiveness and Shape Recovery Ratio of Shape Recovery Self-Healing Plastic
Key Engineering Materials, 2019Shape recovery fiber reinforced self-healing plastic which achieves full strength recovery is developed. In this system, microcapsules containing dicyclopentadiene (DCPD) as healing agent are dispersed in epoxy resin matrix. Moreover, thermal shrinkage fibers coated by weak interlayer with Grubbs catalysts are uniaxially oriented.
Hanna Ueshima, Wataru Nakao
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Image Warping for Shape Recovery and Recognition
Computer Vision and Image Understanding, 1998We demonstrate that, for a large class of reflectance functions, there is a direct relationship between image warps and the corresponding geometric deformations of the underlying three-dimensional objects. This helps explain the hidden geometrical assumptions in object recognition schemes which involve two-dimensional image warping computed by matching
Alan L. Yuille +2 more
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Shape Recovery Using HDR Images
Computer Graphics, Imaging and Visualisation (CGIV 2007), 2007In this paper, an effective method for shape recovery using HDRI (high dynamic range images) is proposed. Firstly, an accurate reflectance map for a reference sphere relating its radiance values and corresponding normals is established, then the set of candidate normals of each target point comprising the same material are found by comparing its ...
Zuoyong Zheng, Lizhuang Ma, Zhou Zeng
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On the distortion of shape recovery from motion
Image and Vision Computing, 2004Abstract Given that most current structure from motion (SFM) algorithms cannot recover true motion estimates reliably, it is important to understand the impact such motion errors have on the shape reconstruction. In this paper, various robustness issues surrounding different types of second order shape estimates recovered from motion cue are ...
Tao Xiang 0002, Loong Fah Cheong
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Rectification of Illumination on 3D Shape Recovery
2008 International Conference on Computational Sciences and Its Applications, 2008In the area of machine vision, shadows occur frequently in a wide variety of scenes. An inherent weakness of focus-based methods is that, they require the imaged scene to have significant texture. In many real-world applications, surfaces can be smoothly shaded, lacking detectable texture.
Saeed Muhammad Mannan, Tae-Sun Choi
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Shape recovery for rotating surfaces: A tutorial
2013 American Control Conference, 2013One of the key elements of the metrology system for the rotating stage used in the Reflective Electron Beam Lithography (REBL) instrument is a set of laser interferometers that measures the distance to a rotating cylindrical ring shaped mirror. This metrology arrangement allows the lateral x-y motion of the stage to be measured independent from the ...
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