Results 181 to 190 of about 4,044 (217)
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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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Boundary artifact in inversion‐recovery images
Magnetic Resonance in Medicine, 1986AbstractModulus reconstruction of inversion‐recovery images causes a pixel value to be assigned the absolute magnitude of the signal amplitude. Consequently, contrast between tissues is reduced if they have amplitudes of opposite sign. When contrast is reduced between adjacent tissues, dark line artifacts are created at the tissue boundaries.
R T, Droege, S M, Adamczak
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Wavelet Based Image Authentication and Recovery
Journal of Computer Science and Technology, 2007In this paper, we propose a secure semi-fragile watermarking technique based on integer wavelet transform with a choice of two watermarks to be embedded. A self-recovering algorithm is employed, that hides the image digest into some wavelet subbands for detecting possible illicit object manipulation undergone in the image.
Rafiullah Chamlawi +2 more
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Active underwater descattering and image recovery
Applied Optics, 2017Underwater imaging is a promising but challenging topic due to the scattering particles in water, which result in serious light attenuation. Therefore, underwater images suffer from low-contrast and low-resolution issues. In this study, in order to recover high-quality underwater images, the point spread functions (PSFs) are estimated by a slant-edge ...
Pingli Han +5 more
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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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Shattered Images: Recovery for the SCI Client
Rehabilitation Nursing, 1991Spinal cord injury (SCI) is one of the most traumatic afflictions a person can experience. The impact of the injury on body image often seems unbearable. The SCI individual faces the reality of a known body image that has been replaced by a devastating change in both appearance and function.
J K, French, J A, Phillips
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Constrained image recovery in a product space
Proceedings., International Conference on Image Processing, 2002In image recovery a priori knowledge and the observed data give rise to constraints on the solutions. In general, the recovery problem can be posed as that of minimizing a pertinent cost function over the resulting feasibility set. In this paper we present a product space framework for solving such problems, which leads to simplified formulations and ...
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Compressive Sensing and Recovery for Binary Images
IEEE Transactions on Image Processing, 2016We propose a method for compressive sensing and recovery of binary images. To achieve this, we combine two ideas: in the sensing step, ordered aperture patterns are employed instead of random aperture patterns, and in the recovery step, a dense reconstruction scheme replaces sparse reconstruction. We demonstrate that this approach is more effective for
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Cancer Risk Among World Trade Center Rescue and Recovery Workers: A Review
Ca-A Cancer Journal for Clinicians, 2022Andrew C Todd +2 more
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Planning for Post-Pandemic Cancer Care Delivery: Recovery or Opportunity for Redesign?
Ca-A Cancer Journal for Clinicians, 2021Kathryn A Gold, Hope Rugo, Pelin Çınar
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