Results 61 to 70 of about 5,611 (211)
GIScience & Remote Sensing, 2019 Unmanned Aerial Systems (UASs) have the potential to provide multi-view data, but the approaches used to extract the multi-view data from UAS and investigation of their use in image classification are currently unavailable in publications to our best ...
Tao Liu +5 more
doaj +1 more source
Estimating Physically-Based Reflectance Parameters From a Single Image With GAN-Guided CNN
IEEE Access, 2022 We present a method that estimates the physically accurate reflectance of materials from a single image and reproduces real world materials which can be used in well-known graphics engines and tools.
Chi-Hyoung Rhee, Chang Ha Lee
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Computer Graphics Forum, EarlyView.We introduce the physically based neural BRDF, a novel continuous representation for material appearance based on neural fields. Our model accurately performs real‐world material reconstruction, generation and editing, while uniquely enhancing the physical accuracy of neural BRDFs via three key aspects: energy conservation, Helmholtz reciprocity and ...
C. Zhou +8 more
wiley +1 more source
Development of a New BRDF-Resistant Vegetation Index for Improving the Estimation of Leaf Area Index
Remote Sensing, 2016 The leaf area index (LAI) is one of the most important Earth surface parameters used in the modeling of ecosystems and their interaction with climate. Numerous vegetation indices have been developed to estimate the LAI. However, because of the effects of
Su Zhang +3 more
doaj +1 more source
Accounting for surface reflectance anisotropy in satellite retrievals of tropospheric NO2 [PDF]
Atmospheric Measurement Techniques, 2010 Surface reflectance is a key parameter in satellite trace gas retrievals in the UV/visible range and in particular for the retrieval of nitrogen dioxide (NO2) vertical tropospheric columns (VTCs).
B. Buchmann +6 more
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One‐more‐vertex Next‐Event Estimation with Hierarchical Geometry Sampling
Computer Graphics Forum, EarlyView.Abstract Robust next‐event estimation (NEE) remains a challenge in scenes characterized by sparse or small‐scale geometry where indirect illumination is the primary transport mechanism. In these scenes, traditional path construction, which relies on local directional sampling, often fails to find intersections with the sparse geometry, and standard NEE
Jorge Garcia‐Pueyo +3 more
wiley +1 more source
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingSurface reflectance varies with changes in solar and viewing angles, exhibiting distinct anisotropic reflectance characteristics, which can be characterized using the bidirectional reflectance distribution function (BRDF).
Qianrui Xi +7 more
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Computer Graphics Forum, EarlyView.Abstract Precomputation and efficient approximate material models are well‐known approaches for achieving real‐time rendering with global illumination. Recent research in radiance fields and in particular 3D Gaussian Splatting has demonstrated the power of Gaussian primitives both to represent radiance and for fast optimization.
I. Shah, S. Lucas, G. Drettakis
wiley +1 more source
Beyond Spherical Harmonics: Rethinking Appearance Models for Radiance Reconstruction
Computer Graphics Forum, EarlyView.Abstract View‐dependent appearance modeling remains a challenging problem in novel‐view synthesis and reconstruction. Accurately representing complex angular effects often requires substantial memory and computational resources. For new learning‐based methods, a common approach is to rely on Spherical Harmonics (SH).
Ewa Miazga, Jorge Condor, Piotr Didyk
wiley +1 more source
Phong BRDF Modeli ile Gerçek Zamanlı Işıklandırma
, 2019 In this paper, we propose a novel real-time Bidirectional Reflectance Distribution Function (BRDF) shading interface for creating isotropic BRDFs in image-based lighting.
Kurt, Murat
core +1 more source