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When one captures images in low-light conditions, the images often suffer from low visibility. This poor quality may significantly degrade the performance of many computer vision and multimedia algorithms that are primarily designed for…

计算机视觉与模式识别 · 计算机科学 2016-07-26 Xiaojie Guo

Successful visual navigation depends upon capturing images that contain sufficient useful information. In this letter, we explore a data-driven approach to account for environmental lighting changes, improving the quality of images for use…

机器人学 · 计算机科学 2022-07-12 Justin Tomasi , Brandon Wagstaff , Steven L. Waslander , Jonathan Kelly

Casual photography is often performed in uncontrolled lighting that can result in low quality images and degrade the performance of downstream processing. We consider the problem of estimating surface normal and reflectance maps of scenes…

计算机视觉与模式识别 · 计算机科学 2020-12-14 Zhihao Xia , Jason Lawrence , Supreeth Achar

Neuromorphic event-based dynamic vision sensors (DVS) have much faster sampling rates and a higher dynamic range than frame-based imagers. However, they are sensitive to background activity (BA) events which are unwanted. we propose a new…

新兴技术 · 计算机科学 2020-06-03 Shasha Guo , Ziyang Kang , Lei Wang , Limeng Zhang , Xiaofan Chen , Shiming Li , Weixia Xu

We demonstrate accurate phase measurement from low photon level interference data using a constrained optimization method that takes into account the expected redundancy in the unknown phase function. This approach is shown to have…

量子物理 · 物理学 2015-06-23 Mandeep Singh , Kedar Khare , Anand Kumar Jha , Shashi Prabhakar , R. P. Singh

Event camera is a new type of sensor that is different from traditional cameras. Each pixel is triggered asynchronously by an event. The trigger event is the change of the brightness irradiated on the pixel. If the increment or decrement is…

计算机视觉与模式识别 · 计算机科学 2022-03-28 Kun Xiao , Pengju Li , Guohui Wang , Zhi Li , Yi Chen , Yongfeng Xie , Yuqiang Fang

Most vision-language systems are static observers: they describe pixels, do not act, and cannot safely improve under shift. This passivity limits generalizable, physically grounded visual intelligence. Learning through action, not static…

计算机视觉与模式识别 · 计算机科学 2026-03-27 Yunpeng Zhou

This work demonstrates a novel, state of the art method to reconstruct colored images via the Dynamic Vision Sensor (DVS). The DVS is an image sensor that indicates only a binary change in brightness, with no information about the captured…

图像与视频处理 · 电气工程与系统科学 2022-11-15 Khen Cohen , Omer Hershko , Homer Levy , David Mendlovic , Dan Raviv

Event cameras are bio-inspired sensors that asynchronously report intensity changes in microsecond resolution. DAVIS can capture high dynamics of a scene and simultaneously output high temporal resolution events and low frame-rate intensity…

计算机视觉与模式识别 · 计算机科学 2020-04-02 Liyuan Pan , Miaomiao Liu , Richard Hartley

Digital pixel sensor (DPS) has evolved as a pivotal component in modern imaging systems and has the potential to revolutionize various fields such as medical imaging, astronomy, surveillance, IoT devices, etc. Compared to analog pixel…

计算机视觉与模式识别 · 计算机科学 2024-12-02 Md Rahatul Islam Udoy , Shamiul Alam , Md Mazharul Islam , Akhilesh Jaiswal , Ahmedullah Aziz

We investigate the problem of wireless beam tracking on mmWave bands with the assistance of camera images. In particular, based on the user's beam indices used and camera images taken in the trajectory, we predict the optimal beam indices…

机器学习 · 计算机科学 2021-10-01 Yu Tian , Chenwei Wang

Noise, an unwanted component in an image, can be the reason for the degradation of Image at the time of transmission or capturing. Noise reduction from images is still a challenging task. Digital Image Processing is a component of Digital…

图像与视频处理 · 电气工程与系统科学 2024-10-31 Sahil Ali Akbar , Ananya Verma

Event cameras, inspired by biological vision systems, provide a natural and data efficient representation of visual information. Visual information is acquired in the form of events that are triggered by local brightness changes. Each pixel…

计算机视觉与模式识别 · 计算机科学 2025-07-01 Cheng Gu , Erik Learned-Miller , Daniel Sheldon , Guillermo Gallego , Pia Bideau

Image classification models often learn to predict a class based on irrelevant co-occurrences between input features and an output class in training data. We call the unwanted correlations "data biases," and the visual features causing data…

人机交互 · 计算机科学 2022-09-15 Bum Chul Kwon , Jungsoo Lee , Chaeyeon Chung , Nyoungwoo Lee , Ho-Jin Choi , Jaegul Choo

One of the main limitations for the resolution of optical instruments is the size of the sensor's pixels. In this paper we introduce a new sub pixel resolution algorithm to enhance the resolution of images. This method is based on the…

仪器与探测器 · 物理学 2012-11-12 Siamak Khademi , Ahmad Darudi , Zahra Abbasi

Dynamic vision sensors (DVS) are bio-inspired devices that capture visual information in the form of asynchronous events, which encode changes in pixel intensity with high temporal resolution and low latency. These events provide rich…

计算机视觉与模式识别 · 计算机科学 2025-01-03 Jingkai Sun , Qiang Zhang , Jiaxu Wang , Jiahang Cao , Renjing Xu

Low-light optical imaging refers to the use of cameras to capture images with minimal photon flux. This area has broad application to diverse fields, including optical microscopy for biological studies. In such studies, it is important to…

Fast neuromorphic event-based vision sensors (Dynamic Vision Sensor, DVS) can be combined with slower conventional frame-based sensors to enable higher-quality inter-frame interpolation than traditional methods relying on fixed motion…

Camera parameters not only play an important role in determining the visual quality of perceived images, but also affect the performance of vision algorithms, for a vision-guided robot. By quantitatively evaluating four object detection…

计算机视觉与模式识别 · 计算机科学 2017-05-17 Yulong Wu , John Tsotsos

Despite the dynamic development of computer vision algorithms, the implementation of perception and control systems for autonomous vehicles such as drones and self-driving cars still poses many challenges. A video stream captured by…

计算机视觉与模式识别 · 计算机科学 2023-11-14 Piotr Wzorek , Tomasz Kryjak