Shape reconstruction from gradient data

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Webb1 aug. 2016 · Least-squares method for data reconstruction from gradient data in deflectometry Least-squares method for data reconstruction from gradient data in deflectometry Appl Opt. 2016 Aug 1;55 (22):6052-9. doi: 10.1364/AO.55.006052. Authors Hongyu Ren , Feng Gao , Xiangqian Jiang PMID: 27505388 DOI: 10.1364/AO.55.006052 Webb31 juli 2014 · Comparison of Two-Dimensional Integration Methods for Shape Reconstruction from Gradient Data (Journal Article) OSTI.GOV OSTI.GOV Journal …

Comparison of Two-Dimensional Integration Methods for Shape ...

Webb1 apr. 2015 · Shape reconstruction from gradient data in an arbitrarily-shaped aperture by iterative discrete cosine transforms in Southwell configuration 1. Introduction. It is an … Webb1 jan. 2015 · Harker, M., O’Leary, P. Least squares surface reconstruction from gradients: Direct algebraic methods with spectral, tikhonov, and constrained regularization. In: Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition. ISBN 978-1-4577-0394-2; 2011, p. 2529-2536. doi:10.1109/CVPR. 2011.5995427. diary\u0027s 60

Shape reconstruction from gradient data – arXiv Vanity

Webb17 jan. 2005 · We use a simulated wavefront to compare the two reconstruction methods. The slope of all subapertures is calculated by integrating the gradient of the wavefront function over one microlens (in our case 64 × 64 pixels). The slope values are saved and used for all reconstruction calculations. Webb29 dec. 2024 · Surface reconstruction for micro-samples with large discontinuities using digital holography is a challenge. To overcome this problem, multi-incidence digital holographic profilometry (MIDHP) has been proposed. MIDHP relies on the numerical generation of the longitudinal scanning function (LSF) for reconstructing the topography … Webb31 mars 2015 · Request PDF On Mar 31, 2015, Lei Huang and others published Shape reconstruction from gradient data in an arbitrarily-shaped aperture by iterative discrete cosine transforms in Southwell ... diary\u0027s 5t

Shape Reconstruction from Gradient Data in an Arbitrarily-Shaped ...

A wavelet based method for image reconstruction from gradient data …

WebbWe present a generalized method for reconstructing the shape of an object from measured gradient data. A certain class of optical sensors does not measure the shape of an … Webb20 apr. 2008 · OSTI.GOV Journal Article: Shape reconstruction from gradient data. Shape reconstruction from gradient data. Full Record; Other Related Related diary\u0027s 6Webb1 jan. 2015 · As a requisite and key step in some gradient-based measurement techniques, the reconstruction of the shape, more generally the scalar potential, from the measured … cities with the highest taxes

"Webbför 2 dagar sedan · We present a novel method of reconstructing the pressure fields from error-embedded pressure gradient measurement data. This method utilized Green's … " - Shape reconstruction from gradient data

Shape reconstruction from gradient data

Shape reconstruction based on zero-curl gradient field ... - Optica

Webb1 jan. 2015 · When reconstructing a discrete representation of shape which has the most-similar gradient values with the measured ones, there is an implied assumption that all … Webb11 apr. 2024 · Satellite-observed chlorophyll-a (Chl-a) concentrations are key to studies of phytoplankton dynamics. However, there are gaps in remotely sensed images mainly due to cloud coverage which requires reconstruction. This study proposed a method to build a general convolutional neural network (CNN) model that can reconstruct images in …

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Webb1 apr. 2024 · Shape reconstruction from gradient Wavefront reconstruction Splines 1. Introduction Two-dimensional integration methods [1], [2], [3], [4] are widely applied to reconstruct the height or wavefront from the measured gradient data in slope metrology, such as deflectometry [5], [6] and wavefront sensing [7], [8] etc. WebbWe present a novel method for reconstructing the shape of an object from measured gradient data. A certain class of optical sensors does not measure the shape of an …

Webb14 apr. 2024 · The NMRI225 template should be preferred over the MNI 152 NLIN 6 th generation template for use cases where a big field-of-view with both T1w and FLAIR contrast is needed. In Fig. 5 we provide a ... Webb28 feb. 2024 · An Accurate Fourier-Based Method for Three-Dimensional Reconstruction of Transparent Surfaces in the Shape-From-Polarization Method Abstract: The Fourier-based gradient field integration method can efficiently reconstruct transparent surfaces from the measured gradient data in the Shape-from-polarization method.

WebbLeast-squares integration (LSI) and radial basis function integration (RBFI) methods are widely used to reconstruct specular surface shapes from gradient data in a deflectometry measurement. The traditional LSI method requires gradient data having a rectangular grid, and the RBFI method is effective at handling small size measurement data sets. Webb1 maj 2008 · This paper proposes a B-spline surface-based 3D reconstruction method for deflectometry, which reconstructs the surface under test with its 2-D gradient data set. …

Webb3D shape reconstruction typically requires identifying object features or textures in multiple images of a subject. This approach is not viable when the subject is semi-transparent and moving in and out of focus. Here we overcome these challenges by rendering a candidate shape with adaptive blurring and transparency for comparison with the images. We use …

Webb7 nov. 2013 · In this paper, an algorithm for image reconstruction from gradient data based on the Haar wavelet decomposition is proposed. The proposed algorithm has two main stages. First, the Haar decomposition of the image to be reconstructed is obtained from the given gradient data set. Then, the Haar wavelet synthesis is employed to … cities with the highest rent increasesWebb31 jan. 2015 · Reconstruction Comparison of two-dimensional integration methods for shape reconstruction from gradient data Authors: Lei HUANG Brookhaven National … diary\\u0027s 61Webbför 2 dagar sedan · We present a novel method of reconstructing the pressure fields from error-embedded pressure gradient measurement data. This method utilized Green's function of the Laplacian operator as the convolution kernel that relates pressure to pressure gradient. A compatibility condition on the boundary offers equations to solve … cities with the highest rainfallWebbTerahertz (THz) computed tomography is an emerging nondestructive and non-ionizing imaging method. Most THz reconstruction methods rely on the Radon transform, originating from x-ray imaging, in which x rays propagate in straight lines. However, a THz beam has a finite width, and ignoring its shape results in blurred reconstructed images. … cities with the highest violent crime ratesWebb1 jan. 2015 · As a requisite and key step in some gradient-based measurement techniques, the reconstruction of the shape, more generally the scalar potential, from the measured gradient data has been studied for many years. In this work, three types of two-dimensional integration methods are compared under various conditions. cities with the highest taxes in americaWebb10 apr. 2024 · Low-level任务：常见的包括 Super-Resolution，denoise， deblur， dehze， low-light enhancement， deartifacts等。. 简单来说，是把特定降质下的图片还原成好看的图像，现在基本上用end-to-end的模型来学习这类 ill-posed问题的求解过程，客观指标主要是PSNR，SSIM，大家指标都刷的很 ... diary\\u0027s 63Webb2 maj 2024 · For reconstructing the shape of an object from measured depth gradient field, the most popular two kinds are FFT-based integration methods and least-squares … cities with the highest tax rate