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We introduce a new hair modeling method that uses a dual representation of classical hair strands and 3D Gaussians to produce accurate and realistic strand-based reconstructions from multi-view data. In contrast to recent approaches that…

Computer Vision and Pattern Recognition · Computer Science 2024-09-24 Egor Zakharov , Vanessa Sklyarova , Michael Black , Giljoo Nam , Justus Thies , Otmar Hilliges

Measuring the three-dimensional (3D) distribution of chemistry in nanoscale matter is a longstanding challenge for metrological science. The inelastic scattering events required for 3D chemical imaging are too rare, requiring high beam…

We present a tomographic imaging technique, termed Deep Prior Diffraction Tomography (DP-DT), to reconstruct the 3D refractive index (RI) of thick biological samples at high resolution from a sequence of low-resolution images collected…

Image and Video Processing · Electrical Eng. & Systems 2021-11-18 Kevin C. Zhou , Roarke Horstmeyer

3-D shape is important to chemistry, but how important? Machine learning works best when the inputs are simple and match the problem well. Chemistry datasets tend to be very small compared to those generally used in machine learning so we…

Machine Learning · Computer Science 2023-04-18 Ella Gale

The surface topography of diamond coatings strongly affects surface properties such as adhesion, friction, wear, and biocompatibility. However, the understanding of multi-scale topography, and its effect on properties, has been hindered by…

Research tasks related to human body analysis have been drawing a lot of attention in computer vision area over the last few decades, considering its potential benefits on our day-to-day life. Anthropometry is a field defining physical…

Computer Vision and Pattern Recognition · Computer Science 2021-12-23 Dana Škorvánková , Adam Riečický , Martin Madaras

This study proposes a method for simulating signals received by frequency-modulated continuous-wave radar during respiratory monitoring, using human body geometry and displacement data acquired via a depth camera. Unlike previous studies…

Signal Processing · Electrical Eng. & Systems 2025-07-21 Kimitaka Sumi , Takuya Sakamoto

Organoids are three-dimensional (3D) in vitro models for studying tissue development, disease progression, and physiological responses. Holotomography (HT) enables long-term, label-free imaging of live organoids by reconstructing volumetric…

Medical Physics · Physics 2025-12-30 ChulMin Oh , Jimin Cho , Juyeon Park , Hoyeon Lee , YongKeun Park

Technique of the quantitative description of image broadening effect in AFM allowing to restore real geometrical parameters of object using two-parameters model (height and width at half-height) is developed. Application of the technique…

Mesoscale and Nanoscale Physics · Physics 2011-07-22 M. O. Gallyamov , I. V. Yaminsky

We present PHORHUM, a novel, end-to-end trainable, deep neural network methodology for photorealistic 3D human reconstruction given just a monocular RGB image. Our pixel-aligned method estimates detailed 3D geometry and, for the first time,…

Computer Vision and Pattern Recognition · Computer Science 2022-04-20 Thiemo Alldieck , Mihai Zanfir , Cristian Sminchisescu

Animal hair examination at a criminal scene may provide valuable information in forensic investigations. However, local reference databases for animal hair identification are rare. In the present study, we provide differential histological…

Tissues and Organs · Quantitative Biology 2018-07-10 Yasser A. Ahmed , Safwat Ali , Ahmed Ghallab

Refractive index is a fundamental optical property of powder and a key input to the measurement of the size distribution using light scattering and the measurement of the absorption and scattering coefficients using diffuse reflectance…

Optics · Physics 2024-03-05 Cory Juntunen , Adam J. Rish , Carl Anderson , Yongjin Sung

Given its real-time capability to quantify mechanical tissue properties, ultrasound shear wave elastography holds significant promise in clinical musculoskeletal imaging. However, existing shear wave elastography methods fall short in…

Medical Physics · Physics 2024-06-07 Bryan J. Ranger , Kevin M. Moerman , Micha Feigin , Hugh M. Herr , Brian W. Anthony

The paper presents an alternative way to classical stereocorrelation. First, 2D image processing of random patterns is described. Sub-pixel displacements are determined using phase analysis. Then distortion evaluation is presented. The…

Classical Physics · Physics 2013-11-18 Jérôme Molimard , Gaetan Boyer , Hassan Zahouani

Vibrational micro-spectroscopy is a powerful optical tool, providing a non-invasive label-free chemically specific imaging for many chemical and biomedical applications. However, hyperspectral image produced by Raman micro-spectroscopy…

Computational Physics · Physics 2019-03-12 E. G. Lobanova , S. V. Lobanov

Point 1: Shape characterizers are metrics that quantify aspects of the overall geometry of a 3D digital surface. When computed for biological objects, the values of a shape characterizer are largely independent of homology interpretations…

Quantitative Methods · Quantitative Biology 2019-01-21 Shan Shan , Shahar Z. Kovalsky , Julie M. Winchester , Doug M. Boyer , Ingrid Daubechies

Beam halo is an important factor in any high intensity accelerator. It can cause difficulties in the control of the beam, emittance growth, particle loss and even damage to the accelerator. It is therefore essential to understand the…

Accelerator Physics · Physics 2015-06-04 H. D. Zhang , R. B. Fiorito , A. G. Shkvarunets , R. A. Kishek , C. P. Welsch

3D hand pose estimation based on RGB images has been studied for a long time. Most of the studies, however, have performed frame-by-frame estimation based on independent static images. In this paper, we attempt to not only consider the…

Computer Vision and Pattern Recognition · Computer Science 2020-07-13 John Yang , Hyung Jin Chang , Seungeui Lee , Nojun Kwak

As very large studies of complex neuroimaging phenotypes become more common, human quality assessment of MRI-derived data remains one of the last major bottlenecks. Few attempts have so far been made to address this issue with machine…

Atomic Force Microscopy has enabled 2D imaging at the sub-molecular level, and 3D mapping of the potential field. However, fast identification of the surface still remains a challenging topic. In this paper, as a step towards implementation…