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Image noise modeling is a long-standing problem with many applications in computer vision. Early attempts that propose simple models, such as signal-independent additive white Gaussian noise or the heteroscedastic Gaussian noise model…

图像与视频处理 · 电气工程与系统科学 2022-06-03 Ali Maleky , Shayan Kousha , Michael S. Brown , Marcus A. Brubaker

Most of previous image denoising methods focus on additive white Gaussian noise (AWGN). However,the real-world noisy image denoising problem with the advancing of the computer vision techiniques. In order to promote the study on this…

计算机视觉与模式识别 · 计算机科学 2018-04-11 Jun Xu , Hui Li , Zhetong Liang , David Zhang , Lei Zhang

A near-optimal reconstruction of the radiance of a High Dynamic Range scene from an exposure stack can be obtained by modeling the camera noise distribution. The latent radiance is then estimated using Maximum Likelihood Estimation. But…

图像与视频处理 · 电气工程与系统科学 2020-09-18 Param Hanji , Fangcheng Zhong , Rafal K. Mantiuk

We present a new method to capture the acoustic characteristics of real-world rooms using commodity devices, and use the captured characteristics to generate similar sounding sources with virtual models. Given the captured audio and an…

声音 · 计算机科学 2021-09-28 Zhenyu Tang , Nicholas J. Bryan , Dingzeyu Li , Timothy R. Langlois , Dinesh Manocha

Geometrical approaches for room acoustics simulation have the advantage of requiring limited computational resources while still achieving a high perceptual plausibility. A common approach is using the image source model for direct and…

声音 · 计算机科学 2024-10-28 Siegfried Gündert , Stephan D. Ewert , Steven van de Par

The use of cameras and computational algorithms for noninvasive, low-cost and scalable measurement of physiological (e.g., cardiac and pulmonary) vital signs is very attractive. However, diverse data representing a range of environments,…

计算机视觉与模式识别 · 计算机科学 2022-06-10 Daniel McDuff , Miah Wander , Xin Liu , Brian L. Hill , Javier Hernandez , Jonathan Lester , Tadas Baltrusaitis

State-of-the-art Deep Neural Networks can be easily fooled into providing incorrect high-confidence predictions for images with small amounts of adversarial noise. Does this expose a flaw with deep neural networks, or do we simply need a…

计算机视觉与模式识别 · 计算机科学 2017-07-25 Akshayvarun Subramanya , Suraj Srinivas , R. Venkatesh Babu

Attention is a powerful concept in computer vision. End-to-end networks that learn to focus selectively on regions of an image or video often perform strongly. However, other image regions, while not necessarily containing the signal of…

图像与视频处理 · 电气工程与系统科学 2020-10-16 Ewa Nowara , Daniel McDuff , Ashok Veeraraghavan

Underwater acoustic environment estimation is a challenging but important task for remote sensing scenarios. Current estimation methods require high signal strength and a solution to the fragile echo labeling problem to be effective. In…

The denoising process of diffusion models can be interpreted as an approximate projection of noisy samples onto the data manifold. Moreover, the noise level in these samples approximates their distance to the underlying manifold. Building…

计算机视觉与模式识别 · 计算机科学 2025-06-03 Abulikemu Abuduweili , Chenyang Yuan , Changliu Liu , Frank Permenter

Change detection plays an important role in most video-based applications. The first stage is to build appropriate background model, which is now becoming increasingly complex as more sophisticated statistical approaches are introduced to…

计算机视觉与模式识别 · 计算机科学 2014-05-27 Dong Liang , Shun'ichi Kaneko

In a human-robot collaborative task where a robot helps its partner by finding described objects, the depth dimension plays a critical role in successful task completion. Existing studies have mostly focused on comprehending the object…

机器人学 · 计算机科学 2021-07-13 Fethiye Irmak Dogan , Iolanda Leite

Modern smartphones can continuously stream multi-megapixel RGB images at 60Hz, synchronized with high-quality 3D pose information and low-resolution LiDAR-driven depth estimates. During a snapshot photograph, the natural unsteadiness of the…

计算机视觉与模式识别 · 计算机科学 2022-04-01 Ilya Chugunov , Yuxuan Zhang , Zhihao Xia , Xuaner , Zhang , Jiawen Chen , Felix Heide

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

计算机视觉与模式识别 · 计算机科学 2022-03-24 Kun Xiao , Guohui Wang , Yi Chen , Jinghong Nan , Yongfeng Xie

Gradient-based algorithms are crucial to modern computer-vision and graphics applications, enabling learning-based optimization and inverse problems. For example, photorealistic differentiable rendering pipelines for color images have been…

计算机视觉与模式识别 · 计算机科学 2021-08-10 Benjamin Planche , Rajat Vikram Singh

This document describes a noise generator that simulates realistic noise found in smartphone cameras. The generator simulates Poissonian-Gaussian noise whose parameters have been estimated on the Smartphone Image Denoising Dataset (SIDD).…

图像与视频处理 · 电气工程与系统科学 2022-02-01 Saeed Ranjbar Alvar , Ivan V. Bajić

As demand for advanced photographic applications on hand-held devices grows, these electronics require the capture of high quality depth. However, under low-light conditions, most devices still suffer from low imaging quality and inaccurate…

计算机视觉与模式识别 · 计算机科学 2018-03-22 Sunghoon Im , Hae-Gon Jeon , In So Kweon

As quotidian use of sophisticated cameras surges, people in modern society are more interested in capturing fine-quality images. However, the quality of the images might be inferior to people's expectations due to the noise contamination in…

图像与视频处理 · 电气工程与系统科学 2022-03-08 Yonggi Park , Kelum Gajamannage , Alexey Sadovski

Event cameras are a kind of bio-inspired sensors that generate data when the brightness changes, which are of low-latency and high dynamic range (HDR). However, due to the nature of the sparse event stream, event-based mapping can only…

机器人学 · 计算机科学 2021-06-04 Yan Dong

This study proposes a sensing method using a millimeter-wave array radar and a depth camera to measure pulse waves at multiple sites on the human body. Using a three-dimensional shape model of the target human body measured by the depth…

信号处理 · 电气工程与系统科学 2024-05-20 Takehito Koshisaka , Takuya Sakamoto