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We find that different Deep Neural Networks (DNNs) trained with the same dataset share a common principal subspace in latent spaces, no matter in which architectures (e.g., Convolutional Neural Networks (CNNs), Multi-Layer Preceptors (MLPs)…

Machine Learning · Computer Science 2021-10-07 Haoran Liu , Haoyi Xiong , Yaqing Wang , Haozhe An , Dongrui Wu , Dejing Dou

The precise combination of image sensor and micro-lens array enables lenslet light field cameras to record both angular and spatial information of incoming light, therefore, one can calculate disparity and depth from light field images. In…

Computer Vision and Pattern Recognition · Computer Science 2018-11-20 Haoxin Ma , Haotian Li , Zhiwen Qian , Shengxian Shi , Tingting Mu

Capturing photographs with wrong exposures remains a major source of errors in camera-based imaging. Exposure problems are categorized as either: (i) overexposed, where the camera exposure was too long, resulting in bright and washed-out…

Image and Video Processing · Electrical Eng. & Systems 2021-03-31 Mahmoud Afifi , Konstantinos G. Derpanis , Björn Ommer , Michael S. Brown

This work evaluates six state-of-the-art deep neural network (DNN) architectures applied to the problem of enhancing camera-captured document images. The results from each network were evaluated both qualitatively and quantitatively using…

Computer Vision and Pattern Recognition · Computer Science 2021-06-30 Lucas N. Kirsten , Ricardo Piccoli , Ricardo Ribani

Defocus blur arises in images that are captured with a shallow depth of field due to the use of a wide aperture. Correcting defocus blur is challenging because the blur is spatially varying and difficult to estimate. We propose an effective…

Image and Video Processing · Electrical Eng. & Systems 2020-07-20 Abdullah Abuolaim , Michael S. Brown

Recent works achieve excellent results in defocus deblurring task based on dual-pixel data using convolutional neural network (CNN), while the scarcity of data limits the exploration and attempt of vision transformer in this task. In…

Computer Vision and Pattern Recognition · Computer Science 2022-09-19 Dafeng Zhang , Xiaobing Wang

Neural scene representations, such as Neural Radiance Fields (NeRF), are based on training a multilayer perceptron (MLP) using a set of color images with known poses. An increasing number of devices now produce RGB-D(color + depth)…

Computer Vision and Pattern Recognition · Computer Science 2022-11-08 Arnab Dey , Yassine Ahmine , Andrew I. Comport

Deploying deep neural networks~(DNNs) on edge devices provides efficient and effective solutions for the real-world tasks. Edge devices have been used for collecting a large volume of data efficiently in different domains. DNNs have been an…

Computer Vision and Pattern Recognition · Computer Science 2022-09-27 Guanchu Wang , Zaid Pervaiz Bhat , Zhimeng Jiang , Yi-Wei Chen , Daochen Zha , Alfredo Costilla Reyes , Afshin Niktash , Gorkem Ulkar , Erman Okman , Xuanting Cai , Xia Hu

The insideness problem is an aspect of image segmentation that consists of determining which pixels are inside and outside a region. Deep Neural Networks (DNNs) excel in segmentation benchmarks, but it is unclear if they have the ability to…

Computer Vision and Pattern Recognition · Computer Science 2022-01-27 Kimberly Villalobos , Vilim Štih , Amineh Ahmadinejad , Shobhita Sundaram , Jamell Dozier , Andrew Francl , Frederico Azevedo , Tomotake Sasaki , Xavier Boix

Deep neural networks (DNNs) have been used to create models for many complex analysis problems like image recognition and medical diagnosis. DNNs are a popular tool within machine learning due to their ability to model complex patterns and…

Machine Learning · Computer Science 2024-05-14 Parth Patil , Ben Boardley , Jack Gardner , Emily Loiselle , Deerajkumar Parthipan

Recent research efforts in optical computing have gravitated towards developing optical neural networks that aim to benefit from the processing speed and parallelism of optics/photonics in machine learning applications. Among these…

Optics · Physics 2020-12-25 Deniz Mengu , Yair Rivenson , Aydogan Ozcan

Retinal vessel information is helpful in retinal disease screening and diagnosis. Retinal vessel segmentation provides useful information about vessels and can be used by physicians during intraocular surgery and retinal diagnostic…

Computer Vision and Pattern Recognition · Computer Science 2018-02-23 M. Hajabdollahi , R. Esfandiarpoor , S. M. R. Soroushmehr , N. Karimi , S. Samavi , K. Najarian

Conventional image reconstruction models for lensless cameras often assume that each measurement results from convolving a given scene with a single experimentally measured point-spread function. These image reconstruction models fall short…

Computer Vision and Pattern Recognition · Computer Science 2022-12-21 Oliver Kingshott , Nick Antipa , Emrah Bostan , Kaan Akşit

In recent years, convolutional neural networks (CNNs) are used in a large number of tasks in computer vision. One of them is object detection for autonomous driving. Although CNNs are used widely in many areas, what happens inside the…

Computer Vision and Pattern Recognition · Computer Science 2022-10-14 Ajay Chawda , Axel Vierling , Karsten Berns

We present a simple nearest-neighbor (NN) approach that synthesizes high-frequency photorealistic images from an "incomplete" signal such as a low-resolution image, a surface normal map, or edges. Current state-of-the-art deep generative…

Computer Vision and Pattern Recognition · Computer Science 2017-08-18 Aayush Bansal , Yaser Sheikh , Deva Ramanan

Purpose: The aim of this work is to demonstrate that convolutional neural networks (CNN) can be applied to extremely sparse image libraries by subdivision of the original image datasets. Methods: Image datasets from a conventional digital…

Computer Vision and Pattern Recognition · Computer Science 2020-10-27 Johan P. Boetker

Estimation of optical aberrations from volumetric intensity images is a key step in sensorless adaptive optics for 3D microscopy. Recent approaches based on deep learning promise accurate results at fast processing speeds. However,…

Image and Video Processing · Electrical Eng. & Systems 2020-10-28 Debayan Saha , Uwe Schmidt , Qinrong Zhang , Aurelien Barbotin , Qi Hu , Na Ji , Martin J. Booth , Martin Weigert , Eugene W. Myers

Based on different projection geometry, a fisheye image can be presented as a parameterized non-rectilinear image. Deep neural networks(DNN) is one of the solutions to extract parameters for fisheye image feature description. However, a…

Computer Vision and Pattern Recognition · Computer Science 2019-01-24 Zhen Chen , Anthimos Georgiadis

We present a controllable camera simulator based on deep neural networks to synthesize raw image data under different camera settings, including exposure time, ISO, and aperture. The proposed simulator includes an exposure module that…

Computer Vision and Pattern Recognition · Computer Science 2021-08-10 Hao Ouyang , Zifan Shi , Chenyang Lei , Ka Lung Law , Qifeng Chen

Recent models for image processing are using the Convolutional neural network (CNN) which requires a pixel per pixel analysis of the input image. This method works well. However, it is time-consuming if we have large images. To increase the…

Machine Learning · Computer Science 2019-12-10 Mohamed Karim Belaid