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Purpose: Surgical scene understanding plays a critical role in the technology stack of tomorrow's intervention-assisting systems in endoscopic surgeries. For this, tracking the endoscope pose is a key component, but remains challenging due…

Computer Vision and Pattern Recognition · Computer Science 2023-04-18 Michel Hayoz , Christopher Hahne , Mathias Gallardo , Daniel Candinas , Thomas Kurmann , Maximilian Allan , Raphael Sznitman

Camera calibration is an essential process in photogrammetry, serving as a crucial link between the 2D image coordinate system and the 3D world coordinate system. However, when observations are conducted through refractive interfaces, the…

Accurate estimation of stereo camera extrinsic parameters is the key to guarantee the performance of stereo matching algorithms. In prior arts, the online self-calibration of stereo cameras has commonly been formulated as a specialized…

Robotics · Computer Science 2024-03-05 Hongbo Zhao , Yikang Zhang , Qijun Chen , Rui Fan

Fine-detailed reconstructions are in high demand in many applications. However, most of the existing RGB-D reconstruction methods rely on pre-calculated accurate camera poses to recover the detailed surface geometry, where the…

Computer Vision and Pattern Recognition · Computer Science 2022-10-25 Lu Sang , Bjoern Haefner , Xingxing Zuo , Daniel Cremers

Calibrating displays is a basic and regular task that content creators must perform to maintain optimal visual experience, yet it remains a troublesome issue. Measuring display characteristics from different viewpoints often requires…

Computer Vision and Pattern Recognition · Computer Science 2025-10-14 Ziyang Chen , Yuta Itoh , Kaan Akşit

In this paper, we investigate a distributed multi-input multi-output and orthogonal frequency division multiplexing (MIMO-OFDM) dual-function radar-communication (DFRC) system, which enables simultaneous communication and sensing in…

Signal Processing · Electrical Eng. & Systems 2025-03-17 Chen Zhong , Xufeng Zhou , Lan Tang , Mengting Lou

Video reconstruction from a single motion-blurred image is a challenging problem, which can enhance the capabilities of existing cameras. Recently, several works addressed this task using conventional imaging and deep learning. Yet, such…

Image and Video Processing · Electrical Eng. & Systems 2022-12-20 Erez Yosef , Shay Elmalem , Raja Giryes

This paper proposes a novel, robust, and lightweight supervised Convolutional Neural Network (CNN)-based technique for frame identification and synchronization, designed to enhance short-link communication performance in a screen-to-camera…

Computer Vision and Pattern Recognition · Computer Science 2025-07-01 Vaigai Nayaki Yokar , Hoa Le-Minh , Xicong Li , Wai Lok Woo , Luis Nero Alves , Stanislav Zvanovec , Tran The Son , Zabih Ghassemlooy

The utilization of implicit representation for visual data (such as images, videos, and 3D models) has recently gained significant attention in computer vision research. In this letter, we propose a novel model steganography scheme with…

Cryptography and Security · Computer Science 2023-09-20 Weina Dong , Jia Liu , Yan Ke , Lifeng Chen , Wenquan Sun , Xiaozhong Pan

This paper introduces a novel approach to the fine alignment of images in a burst captured by a handheld camera. In contrast to traditional techniques that estimate two-dimensional transformations between frame pairs or rely on discrete…

Computer Vision and Pattern Recognition · Computer Science 2023-12-11 Bruno Lecouat , Yann Dubois de Mont-Marin , Théo Bodrito , Julien Mairal , Jean Ponce

Sensor setups of robotic platforms commonly include both camera and LiDAR as they provide complementary information. However, fusing these two modalities typically requires a highly accurate calibration between them. In this paper, we…

Steganography is the art of hiding a secret message inside a publicly visible carrier message. Ideally, it is done without modifying the carrier, and with minimal loss of information in the secret message. Recently, various deep learning…

Multimedia · Computer Science 2020-03-31 Shivam Agarwal , Siddarth Venkatraman

In imaging systems, following acquisition, an image/video is transmitted or stored and eventually presented to human observers using different and often imperfect display devices. While the resulting quality of the output image may severely…

Multimedia · Computer Science 2018-08-01 Yehuda Dar , Michael Elad , Alfred M. Bruckstein

This letter presents a novel method to estimate the relative poses between RGB-D cameras with minimal overlapping fields of view in a panoramic RGB-D camera system. This calibration problem is relevant to applications such as indoor 3D…

Image and Video Processing · Electrical Eng. & Systems 2018-09-11 Hang Liu , Hengyu Li , Xiahua Liu , Jun Luo , Shaorong Xie , Yu Sun

Computer-Generated Holography (CGH) algorithms often fall short in matching simulations with results from a physical holographic display. Our work addresses this mismatch by learning the holographic light transport in holographic displays.…

Optics · Physics 2022-06-16 Koray Kavaklı , Hakan Urey , Kaan Akşit

Most of the real world scenes have a very high dynamic range (HDR). The mobile phone cameras and the digital cameras available in markets are limited in their capability in both the range and spatial resolution. Same argument can be posed…

Computer Vision and Pattern Recognition · Computer Science 2013-05-21 Govind Salvi , Puneet Sharma , Shanmuganathan Raman

Compression technology is essential for efficient image transmission and storage. With the rapid advances in deep learning, images are beginning to be used for image recognition as well as for human vision. For this reason, research has…

Computer Vision and Pattern Recognition · Computer Science 2023-08-29 Takahiro Shindo , Taiju Watanabe , Kein Yamada , Hiroshi Watanabe

A large number of cameras embedded on smart-phones, drones or inside cars have a direct access to external motion sensing from gyroscopes and accelerometers. On these power-limited devices, video compression must be of low-complexity. For…

Image and Video Processing · Electrical Eng. & Systems 2020-02-03 Karim El Khoury , Pascal Pellegrin , Antonin Descampe , Sébastien Lugan , Benoit Macq

In steganography, selecting an optimal cover image, referred to as cover selection, is pivotal for effective message concealment. Traditional methods have typically employed exhaustive searches to identify images that conform to specific…

Artificial Intelligence · Computer Science 2024-10-25 Karl Chahine , Hyeji Kim

Accurate camera calibration is a well-known and widely used task in computer vision that has been researched for decades. However, the standard approach based on checkerboard calibration patterns has some drawbacks that limit its…

Computer Vision and Pattern Recognition · Computer Science 2025-11-26 Peer Stelldinger , Nils Schönherr , Justus Biermann