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SUMMARY:3D Radiative Transfer Modeling of Heterogeneous Vegetation Canopie
 s: from Reflectance to Photosynthesis - Jianbo Qi\, Beijing Normal Univers
 ity 
DTSTART:20260220T130000Z
DTEND:20260220T140000Z
UID:TALK241939@talks.cam.ac.uk
CONTACT:114742
DESCRIPTION:*Abstract*\n\nAccurate quantification of vegetation structure 
 and function is critical for understanding the global carbon cycle and ene
 rgy budget. However\, the structural heterogeneity of vegetation canopies 
 poses significant challenges to traditional remote sensing models\, often 
 leading to uncertainties in retrieving biophysical parameters. 3D Radiativ
 e Transfer (RT) modeling serves as a powerful bridge connecting remote sen
 sing observations with the physical and physiological processes of vegetat
 ion.\n\nIn this seminar\, Dr. Qi will introduce the Large-Scale Remote Sen
 sing Data and Image Simulation Framework (LESS)\, a new 3D radiative trans
 fer model developed to address these challenges. LESS employs efficient ra
 y-tracing techniques to simulate photon interactions within complex\, hete
 rogeneous 3D scenes. The talk will demonstrate how LESS simulates multi-mo
 dal data—including visible/multispectral images\, thermal infrared\, and
  LiDAR signals—with high fidelity.\n\nFurthermore\, the presentation wil
 l extend beyond optical reflectance to discuss the modeling of photosynthe
 sis and Solar-Induced Chlorophyll Fluorescence (SIF). By linking 3D struct
 ural information with physiological processes\, the model provides a physi
 cs-based approach to validate satellite products and deepen our understand
 ing of vegetation productivity under changing environmental conditions.\n\
 n*Bio*\n\nDr. Jianbo Qi is an Associate Professor at the Faculty of Geogra
 phical Science\, Beijing Normal University\, China. He obtained his PhD de
 gree from Paul Sabatier University (University of Toulouse III) in France\
 , and Beijing Normal University in China. His research interests lie at th
 e intersection of remote sensing and computer graphics\, with a primary fo
 cus on 3D radiative transfer modeling of complex land surfaces and LiDAR p
 oint cloud processing.\n\nDr. Qi is the lead developer of LESS (http://les
 srt.org/)\, a widely used 3D radiative transfer model capable of efficient
 ly simulating visible\, thermal infrared\, and LiDAR signals for heterogen
 eous 3D landscapes. This tool has become instrumental in quantitative remo
 te sensing modeling and the validation of inversion algorithms. Additional
 ly\, he proposed and implemented the Cloth Simulation Filter (CSF) (https:
 //github.com/jianboqi/CSF)\, a ground filtering algorithm for point clouds
 . It has received widespread acclaim within the community and has been int
 egrated into numerous open-source tools (such as CloudCompare) and commerc
 ial photogrammetry software.
LOCATION:Room GS15 at the William Gates Building and on Zoom: https://cl-c
 am-ac-uk.zoom.us/j/4361570789?pwd=Nkl2T3ZLaTZwRm05bzRTOUUxY3Q4QT09&amp\;fr
 om=addon 
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