Phys.org June 18, 2024 Existing methods for single-view 3D reconstruction with Neural radiance fields (NeRF) rely on either data prior to hallucinate views of occluded regions which may not be physically accurate, or shadows observed by RGB cameras which are difficult to detect in ambient light and low albedo backgrounds. A team of researchers in the US (MIT, industry) proposed using time-of-flight data captured by a single-photon avalanche diode to overcome these limitations models two-bounce optical paths with NeRF using lidar transient data for supervision. By leveraging the advantages of both NeRF and two-bounce light measured by lidar they reconstructed […]
Tag Archives: Image reconstruction
Novel method helps recover obscured images
Phys.org January 23, 2023 Imaging through scattering medium is challenging. Computational reconstruction from scattered signals is used frequently. An international team of researchers (China, Saudi Arabia) has experimentally demonstrated reconstruction-free real-time imaging of static and moving objects with their actual orientation information under single-wavelength and white light illumination. They proposed a modified speckle autocorrelation imaging (SAI) method inspired by the self-imaging results. According to the researchers their strategy does not requires pre-calibration or acquisition of point-spread-function, active control of wavefronts, complicated equipment, iterations or carefully adjusted parameters. The work could pave the way towards rapid and high-quality imaging through scattering […]