Results 31 to 40 of about 2,118,011 (294)

A brain-inspired approach for SAR-to-optical image translation based on diffusion models

Frontiers in Neuroscience
Synthetic Aperture Radar (SAR) plays a crucial role in all-weather and all-day Earth observation owing to its distinctive imaging mechanism. However, interpreting SAR images is not as intuitive as optical images.
Hao Shi, Hao Shi, Hao Shi, Zihan Cui, Zihan Cui, Liang Chen, Liang Chen, Jingfei He, Jingfei He, Jingfei He, Jingyi Yang, Jingyi Yang   +11 more
doaj   +1 more source

Semantic-Layout-Guided Image Synthesis for High-Quality Synthetic-Aperature Radar Detection Sample Generation

Remote Sensing, 2023
With the widespread application and functional complexity of deep neural networks (DNNs), the demand for training samples is increasing. This elevated requirement also extends to DNN-based SAR object detection.
Yi Kuang, Fei Ma, Fangfang Li, Yingbing Liu, Fan Zhang   +4 more
doaj   +1 more source

A Solvable Nonlinear Reaction-Diffusion Model

, 1993
We construct a coupled set of nonlinear reaction-diffusion equations which are exactly solvable. The model generalizes both the Burger equation and a Boltzman reaction equation recently introduced by Th. W. Ruijgrok and T. T.
Blanchard, Cazenave, Hongler, Masoliver, Max-Olivier Hongler, Montroll, Ricardo Lima, Ruijgrok   +7 more
core   +2 more sources

Fine-Grained Human Hair Segmentation Using a Text-to-Image Diffusion Model

IEEE Access
Human hair segmentation is essential for face recognition and for achieving natural transformation of style transfer. However, it remains a challenging task due to the diverse appearances and complex patterns of hair in image. In this study, we propose a
Dohyun Kim, Euna Lee, Daehyun Yoo, Hongchul Lee   +3 more
doaj   +1 more source

Consistency Problems for Jump-Diffusion Models

, 2005
In this paper consistency problems for multi-factor jump-diffusion models, where the jump parts follow multivariate point processes are examined. First the gap between jump-diffusion models and generalized Heath-Jarrow-Morton (HJM) models is bridged.
Brito RD, Duffie D, Erhan Bayraktar, Filipović D, Filipović D, H. Vincent Poor, Li Chen   +6 more
core   +2 more sources

Pattern formation in reaction diffusion models with spatially inhomogeneous diffusion coefficients [PDF]

, 1992
Reaction-diffusion models for biological pattern formation have been studied extensively in a variety of embryonic and ecological contexts. However, despite experimental evidence pointing to the existence of spatial inhomogeneities in various biological ...
Benson, D. L., Maini, P. K., Sherratt, J. A.   +2 more
core   +3 more sources

A Combined Diffusion Model and Reinforcement Learning Approach for Solving the Vehicle Routing Problem With Multiple Soft Time Windows

IEEE Access
The Vehicle Routing Problem with Multiple Soft Time Windows (VRPMSTW) is a challenging combinatorial optimization problem where a fleet of vehicles must deliver goods to a set of customers, adhering to time windows while minimizing costs.
Yu Qiao, Jianjun Miao, Xiaoying Huang
doaj   +1 more source

A non-equilibrium thermodynamics model for combined adsorption and diffusion processes in micro- and nanopores

, 2012
A non-equilibrium thermodynamics model able to analyze the combined effect of diffusion and adsorption in porous materials is proposed. The model considers the coupled dynamics of the diffusive phase, described by a diffusion type equation, and the ...
Grzywna, Z. J., Rubi, J. M., Santamaria-Holek, I.   +2 more
core   +1 more source

Infinite-Dimensional Diffusion Models

, 2023
Diffusion models have had a profound impact on many application areas, including those where data are intrinsically infinite-dimensional, such as images or time series. The standard approach is first to discretize and then to apply diffusion models to the discretized data.
Pidstrigach, Jakiw, Marzouk, Youssef, Reich, Sebastian, Wang, Sven   +3 more
openaire   +3 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source