Poisson-Boltzmann-based machine learning model for electrostatic analysis.

Electrostatics is of paramount importance to chemistry, physics, biology, and medicine. The Poisson-Boltzmann (PB) theory is a primary model for electrostatic analysis. However, it is highly challenging to compute accurate PB electrostatic solvation free energies for macromolecules due to the nonlinearity, dielectric jumps, charge singularity, and geometric complexity associated with the PB equation.

Near optical coaxial phase measuring deflectometry for measuring structured specular surfaces.

Phase measuring deflectometry (PMD) is an important technique for the form measurement of specular surfaces. However, the existing stereo-PMD techniques have noticeable weaknesses for structured specular surfaces measurement due to the optical axis of the imaging system must have a notable intersection angle with the optical axis of the display system according to the law of reflection. This leads to the imaging sensor and the fringe display screen must be located on the opposite sides of the normal of the surface under test (SUT), which results in large system volume and measurement shadows when measuring discontinuous specular surfaces.

An Iterative Distortion Compensation Algorithm for Camera Calibration Based on Phase Target.

Camera distortion is a critical factor affecting the accuracy of camera calibration. A conventional calibration approach cannot satisfy the requirement of a measurement system demanding high calibration accuracy due to the inaccurate distortion compensation. This paper presents a novel camera calibration method with an iterative distortion compensation algorithm.

3D palmprint and hand imaging system based on full-field composite color sinusoidal fringe projection technique.

Palmprint and hand shape, as two kinds of important biometric characteristics, have been widely studied and applied to human identity recognition. The existing research is based mainly on 2D images, which lose the third-dimensional information. The biological features extracted from 2D images are distorted by pressure and rolling, so the subsequent feature matching and recognition are inaccurate.

Indigenous case of disseminated histoplasmosis from the Penicillium marneffei endemic area of China.

This is the first indigenous case of disseminated histoplasmosis reported from the Penicillium marneffei endemic area in southern China. It was diagnosed by histopathology of tissue, gross and microscopic morphology of the culture and PCR assay of the isolated fungus. Successful antifungal treatment was with itraconazole 400 mg/day for 5 months.