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Image Reconstruction Techniques - Image Wisely
https://www.imagewisely.org/Imaging-Modalities/Computed-Tomography/Image-Reconstruction-Techniques
Image reconstruction (CT) | Radiology Reference Article
https://radiopaedia.org/articles/image-reconstruction-ct
There are various algorithms used in CT image reconstruction, the following are some of the more common algorithms utilized in commercially available CT today. iterative algorithm without statistical modelling used originally by Godfrey Hounsfield, however not commercially used due to the inherent limitations of microprocessors at that time
Study on ray-tracing-based 3D reconstruction method for …
https://www.sciencedirect.com/science/article/pii/S0263224121000087
Light path computation based on ray tracing When camera and refractive-interface parameters are known, underwater 3D reconstruction can be achieved by using ray tracing. Fig. 3 illustrates the refractive geometry of the stereo vision-based measurement system that is widely-used in flume experiments. U = ( U x, U y, U z) T is a 3D point in water.
Image Reconstruction - an overview | ScienceDirect Topics
https://www.sciencedirect.com/topics/engineering/image-reconstruction
Image reconstruction for hard field tomography is a continuously developing field. While the basic mathematics of the Radon transformation and its inverse in two or more dimensions is a solved problem, the practical aspects of image reconstruction of noisy, corrupted, or limited tomographic data is a major driver for current developments.
Forward ray tracing for image projection prediction and …
https://pubmed.ncbi.nlm.nih.gov/20940828/
Forward ray tracing for image projection prediction and surface reconstruction in the evaluation of corneal topography systems A forward ray tracing (FRT) model is presented to determine the exact image projection in a general corneal topography system. Consequently, the skew ray error in Placido-based topography is demonstrated.
Multidimensional Adaptive Sampling and …
https://www.cs.umd.edu/~zwicker/publications/MultidimensionalAdaptiveSampling-SIG08.pdf
Most adaptive ray tracing algorithms face the problem of recon- structing the image for a non-uniform distribution of samples. This is challenging, as most computer graphics scenes contain discontinu- ities that require a dense sampling to reconstruct.
Iterative Ray Tracing between Boreholes for Underground …
https://ieeexplore.ieee.org/document/4307496/
Image reconstruction involves an iterated sequence of numerical ray tracing and linear system inversion. A similar approach, discussed in the literature, sometimes fails to converge. We report here our refinements of this method, including use of a smoothness constraint.
Muon Tracing and Image Reconstruction Algorithms for …
https://ieeexplore.ieee.org/document/8463574/
Muon Tracing and Image Reconstruction Algorithms for Cosmic Ray Muon Computed Tomography Abstract: Cosmic ray muon-computed tomography ($\mu$ CT) is a new imaging modality with unique characteristics that could be particularly important for diverse applications including nuclear nonproliferation, spent nuclear fuel monitoring, cargo scanning ...
Multidimensional Adaptive Sampling and Reconstruction …
https://cs.dartmouth.edu/wjarosz/publications/hachisuka08multidimensional-image-comparison.html
MDAS (Ours) Anisotropic Reconstruction 993s (16 samples/pixel) MSE: 1.73 × 10 -4 Car The Car scene demonstrates a 5-D sampling domain including both motion blur and depth-of-field. We use 10K initial samples and 32 samples per pixel in the final distribution. This scene renders in 2884 seconds and reconstruction takes 22% of total render time.
Light-field camera-based 3D volumetric particle image
https://link.springer.com/article/10.1007/s00348-017-2365-3
This paper presents a dense ray tracing reconstruction technique for a single light-field camera-based particle image velocimetry. The new approach pre-determines the location of a particle through inverse dense ray tracing and reconstructs the voxel value using multiplicative algebraic reconstruction technique (MART).
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