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Reconstruction method based on the memory module for visual anomaly detection attempts to narrow the reconstruction error for normal samples while enlarging it for anomalous samples. Unfortunately, the existing memory module is not fully…

Computer Vision and Pattern Recognition · Computer Science 2022-09-27 Peng Xing , Zechao Li

We introduce DiffPhysCam, a differentiable camera simulator designed to support robotics and embodied AI applications by enabling gradient-based optimization in visual perception pipelines. Generating synthetic images that closely mimic…

Graphics · Computer Science 2025-08-13 Bo-Hsun Chen , Nevindu M. Batagoda , Dan Negrut

We propose a simple, efficient, yet powerful framework for dense visual predictions based on the conditional diffusion pipeline. Our approach follows a "noise-to-map" generative paradigm for prediction by progressively removing noise from a…

Computer Vision and Pattern Recognition · Computer Science 2023-05-16 Yuanfeng Ji , Zhe Chen , Enze Xie , Lanqing Hong , Xihui Liu , Zhaoqiang Liu , Tong Lu , Zhenguo Li , Ping Luo

In this paper, we analyze the statistics of error signals to assess the perceived quality of images. Specifically, we focus on the magnitude spectrum of error images obtained from the difference of reference and distorted images. Analyzing…

Computer Vision and Pattern Recognition · Computer Science 2018-11-14 Dogancan Temel , Ghassan AlRegib

Summary: Errors in gradient trajectories introduce significant artifacts and distortions in magnetic resonance images, particularly in non-Cartesian imaging sequences, where imperfect gradient waveforms can greatly reduce image quality.…

Medical Physics · Physics 2025-06-19 Jonathan B. Martin , Hannah E. Alderson , John C. Gore , Mark D. Does , Kevin D. Harkins

Recent advances in neural camera imaging pipelines have demonstrated notable progress. Nevertheless, the real-world imaging pipeline still faces challenges including the lack of joint optimization in system components, computational…

Image and Video Processing · Electrical Eng. & Systems 2024-11-19 Kepeng Xu , Zijia Ma , Li Xu , Gang He , Yunsong Li , Wenxin Yu , Taichu Han , Cheng Yang

Accurate calibration of camera intrinsic parameters is crucial to various computer vision-based applications in the fields of intelligent systems, autonomous vehicles, etc. However, existing calibration schemes are incompetent for finding…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Hsin-Yi Chen , Chuan-Kai Fu , Jen-Hui Chuang

OCR-based image captioning is an important but under-explored task, aiming to generate descriptions containing visual objects and scene text. Recent studies have made encouraging progress, but they are still suffering from a lack of overall…

Computer Vision and Pattern Recognition · Computer Science 2025-04-29 Dongsheng Xu , Qingbao Huang , Xingmao Zhang , Haonan Cheng , Feng Shuang , Yi Cai

In this work, we enhance a professional end-to-end volumetric video production pipeline to achieve high-fidelity human body reconstruction using only passive cameras. While current volumetric video approaches estimate depth maps using…

Computer Vision and Pattern Recognition · Computer Science 2022-03-01 Decai Chen , Markus Worchel , Ingo Feldmann , Oliver Schreer , Peter Eisert

An average healthy person does not perceive the world in just black and white. Moreover, the perceived world is not composed of pixels and through vision humans perceive structures. However, the acquisition and display systems discretize…

Image and Video Processing · Electrical Eng. & Systems 2018-11-26 Dogancan Temel , Ghassan AlRegib

A quad-pixel (QP) sensor is increasingly integrated into commercial mobile cameras. The QP sensor has a unit of 2$\times$2 four photodiodes under a single microlens, generating multi-directional phase shifting when out-focus blurs occur.…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Zhuofeng Wu , Doehyung Lee , Zihua Liu , Kazunori Yoshizaki , Yusuke Monno , Masatoshi Okutomi

The reconstruction of a scene via a stereo-camera system is a two-steps process, where at first images from different cameras are matched to identify the set of point-to-point correspondences that then will actually be reconstructed in the…

Computer Vision and Pattern Recognition · Computer Science 2021-01-15 Riccardo Beschi , Xiao Feng , Stefania Melillo , Leonardo Parisi , Lorena Postiglione

Vision-language models (VLMs) often struggle to generate accurate and detailed captions for high-resolution images since they are typically pre-trained on low-resolution inputs (e.g., 224x224 or 336x336 pixels). Downscaling high-resolution…

Computer Vision and Pattern Recognition · Computer Science 2025-11-03 Hankyeol Lee , Gawon Seo , Kyounggyu Lee , Dogun Kim , Kyungwoo Song , Jiyoung Jung

Correspondence estimation is one of the most widely researched and yet only partially solved area of computer vision with many applications in tracking, mapping, recognition of objects and environment. In this paper, we propose a novel way…

Computer Vision and Pattern Recognition · Computer Science 2020-04-16 Umashankar Deekshith , Nishit Gajjar , Max Schwarz , Sven Behnke

Camera motion is a fundamental geometric signal that shapes visual perception and cinematic style, yet current video-capable vision-language models (VideoLLMs) rarely represent it explicitly and often fail on fine-grained motion primitives.…

Computer Vision and Pattern Recognition · Computer Science 2026-03-26 Haoan Feng , Sri Harsha Musunuri , Guan-Ming Su

Objective measures of image quality generally operate by comparing pixels of a "degraded" image to those of the original. Relative to human observers, these measures are overly sensitive to resampling of texture regions (e.g., replacing one…

Computer Vision and Pattern Recognition · Computer Science 2021-01-25 Keyan Ding , Kede Ma , Shiqi Wang , Eero P. Simoncelli

The Virtual Image Correlation method applies for the measurement of silhouettes boundaries with sub-pixel precision. It consists in a correlation between the image of interest and a virtual image based on a parametrized curve. Thanks to a…

Computer Vision and Pattern Recognition · Computer Science 2020-09-11 M. L. M. François

Visual error metrics play a fundamental role in the quantification of perceived image similarity. Most recently, use cases for them in real-time applications have emerged, such as content-adaptive shading and shading reuse to increase…

Graphics · Computer Science 2023-10-16 João Libório Cardoso , Bernhard Kerbl , Lei Yang , Yury Uralsky , Michael Wimmer

This paper addresses the high precision measurement of the distortion of a digital camera from photographs. Traditionally, this distortion is measured from photographs of a flat pattern which contains aligned elements. Nevertheless, it is…

Computer Vision and Pattern Recognition · Computer Science 2012-12-27 Zhongwei Tang , Rafael Grompone von Gioi , Pascal Monasse , Jean-Michel Morel

We address the 3D reconstruction of human faces from a single RGB image. To this end, we propose Pixel3DMM, a set of highly-generalized vision transformers which predict per-pixel geometric cues in order to constrain the optimization of a…

Computer Vision and Pattern Recognition · Computer Science 2025-05-02 Simon Giebenhain , Tobias Kirschstein , Martin Rünz , Lourdes Agapito , Matthias Nießner