- Read more about Spatial and Angular Reconstruction of Light field Based on Deep Generative Networks
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Light field (LF) cameras often have significant limitations in spatial and angular resolutions due to their design. Many techniques that attempt to reconstruct LF images at a higher resolution only consider either spatial or angular resolution, but not both. We propose a generative network using high-dimensional convolution to improve both aspects. Our experimental results on both synthetic and real-world data demonstrate that the proposed model outperforms existing state-of-the-art methods in terms of both peak signal-to-noise ratio (PSNR) and visual quality.
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- Read more about Estimation of correspondent trajectories in multiple overlapping synchronized videos using correlation of activity functions
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We present an approach for ranking a collection of videos with overlapping fields of view. The ranking depends on how they allow to visualize as best as possible, i.e. with significant details, a trajectory query drawn in one of the videos. The proposed approach decomposes each video into cells and aims at estimating a correspondence map between cells from different videos using the linear correlation between their functions of activity.
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- Read more about Towards Unsupervised Single Image Dehazing with Deep Learning
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Deep learning computation is often used in single-image dehazing techniques for outdoor vision systems. Its development is restricted by the difficulties in providing a training set of degraded and ground-truth image pairs. In this paper, we develop a novel model that utilizes cycle generative adversarial network through unsupervised learning to effectively remove the requirement of a haze/depth data set. Qualitative and quantitative experiments demonstrated that the proposed model outperforms existing state-of-the-art dehazing models when tested on both synthetic and real haze images.
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- Read more about Image smoothing via gradient sparsity and surface area minimization
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Image smoothing is a very important topic in image processing. Among these image smoothing methods, the $L_0$ gradient minimization method is one of the most popular ones. However, the $L_0$ gradient minimization method suffers from the staircasing effect and over-sharpening issue, which highly degrade the quality of the smoothed image. To overcome these issues, we use not only the $L_0$ gradient term for finding edges, but also a surface area based term for the purpose of smoothing the inside of each region.
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- Read more about 5D Video Stabilization through Sensor Vision Fusion
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- Read more about Dense Optical Flow for the Reconstruction of Weakly Textured and Structured Surfaces: Application to Endoscopy
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- Read more about Evaluating Crowd Density Estimators via Their Uncertainty Bounds
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- Read more about A LIGHTWEIGHT NEURAL NETWORK FOR CROWD ANALYSIS OF IMAGES WITH CONGESTED SCENES
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For images with congested scenes, the task of crowd analysis,
including crowd counting and crowd distribution prediction,
becomes very difficult. To address these issues, various
CNN-based approaches have been proposed. However, those
methods usually have a large number of parameters and require
huge computing resources. In this paper, we focus on
low-complexity approaches and propose a lightweight endto-
end network for crowd analysis. Our method utilizes an
effective scale-aware module to extract multi-scale features
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- Read more about Dense Optical Flow for the Reconstruction of Weakly Textured and Structured Surfaces: Application to Endoscopy
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- Read more about Estimation of Multiple Atmospheric Pollutants Through Image Analysis
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Multiple atmospheric pollutants, such as PM2.5, PM10, and NO2, degrades air quality in many parts of the world. Fine-grained air pollution data can help combat the problem, but conventional monitoring stations are too expensive to support high spatial resolution; image-based estimates have the potential to improve spatial coverage. We estimate pollutant concentrations from images using the position-and color-dependent properties of scattering and absorption. We are the first to use images to estimate pollutant concentrations in systems with multiple pollutants.
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