5 papers
A Theory of Shape Reconstruction from Heat Conduction and Shading
Akihiko Oharazawa, Sriram Narayanan, Mani Ramanagopal +1
Shape from shading using a single image of a Lam- bertian surface is inherently ambiguous. When the light source direction is known, the surface normal estimation has a cone- ambig…
MapLightning: Online Vectorized HD Map Construction with 1D Map Tokens
Shen Zheng, Anurag Ghosh, Mani Ramanagopal +1
Online vectorized HD map construction is essential for scaling safe autonomous driving and requires accurate, real-time inference. Prior methods typically rely on dense bird's-eye-…
Dual Band Thermal Videography: Separating Time-Varying Reflection and Emission Near Ambient Conditions
Sriram Narayanan, Mani Ramanagopal, Srinivasa G. Narasimhan
Long-wave infrared radiation captured by a thermal camera includes (a) emission from an object governed by its temperature and emissivity, and (b) reflected radiation from the surr…
VT-Intrinsic: Physics-Based Decomposition of Reflectance and Shading using a Single Visible-Thermal Image Pair
Zeqing Yuan, Mani Ramanagopal, Aswin C. Sankaranarayanan +1
Decomposing a scene into its reflectance and shading is a challenge due to the lack of extensive ground-truth data for real-world scenes. We introduce a novel physics-based approac…
RT-X Net: RGB-Thermal cross attention network for Low-Light Image Enhancement
Raman Jha, Adithya Lenka, Mani Ramanagopal +2
In nighttime conditions, high noise levels and bright illumination sources degrade image quality, making low-light image enhancement challenging. Thermal images provide complementa…