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The paper introduces a method for studying flow dynamics using diffractive optical element based background-oriented schlieren (BOS). Our method relies on fringe demodulation using root multiple signal classification technique which…

Image and Video Processing · Electrical Eng. & Systems 2019-10-29 Jagadesh Ramaiah , Sreeprasad Ajithaprasad , Gannavarpu Rajshekhar , Dario Ambrosini

Enhancing RAW images captured under low light conditions is a challenging task. Recent deep learning based RAW enhancement methods have shifted from using real paired data to relying on synthetic datasets. These synthetic datasets are…

Image and Video Processing · Electrical Eng. & Systems 2025-09-11 Juntai Zeng

We propose a new method for realistic real-time novel-view synthesis (NVS) of large scenes. Existing neural rendering methods generate realistic results, but primarily work for small scale scenes (<50 square meters) and have difficulty at…

Computer Vision and Pattern Recognition · Computer Science 2023-11-10 Jeffrey Yunfan Liu , Yun Chen , Ze Yang , Jingkang Wang , Sivabalan Manivasagam , Raquel Urtasun

With increasing amounts of data in astronomy, automated analysis methods have become crucial. Synthetic data are required for developing and testing such methods. Current simulations often suffer from insufficient detail or inaccurate…

Instrumentation and Methods for Astrophysics · Physics 2024-11-27 Tobias Vičánek Martínez , Nicolás Barón Pérez , Marcus Brüggen

We introduce a normal-based bas-relief generation and stylization method which is motivated by the recent advancement in this topic. Creating bas-relief from normal images has successfully facilitated bas-relief modeling in image space.…

Graphics · Computer Science 2018-04-18 Zhongping Ji , Xianfang Sun , Weiyin Ma

The life of a photo begins with photons striking the sensor, whose signals are passed through a sophisticated image signal processing (ISP) pipeline to produce a display-referred image. However, such images are no longer faithful to the…

Computer Vision and Pattern Recognition · Computer Science 2026-04-24 Yuekun Dai , Zhoutong Zhang , Shangchen Zhou , Nanxuan Zhao

Novel-view synthesis techniques achieve impressive results for static scenes but struggle when faced with the inconsistencies inherent to casual capture settings: varying illumination, scene motion, and other unintended effects that are…

Rotating Synthetic Aperture Radar (ROSAR) can generate a 360$^\circ$ image of its surrounding environment using the collected data from a single moving track. Due to its non-linear track, the Back-Projection Algorithm (BPA) is commonly used…

Signal Processing · Electrical Eng. & Systems 2023-09-18 Wei Zhao , Cai Wen , Quan Yuan , Rong Zheng

In this work, we address an important problem of optical see through (OST) augmented reality: non-negative image synthesis. Most of the image generation methods fail under this condition, since they assume full control over each pixel and…

Computer Vision and Pattern Recognition · Computer Science 2022-02-09 Flora Yu Shen , Katie Luo , Guandao Yang , Harald Haraldsson , Serge Belongie

The task of generating natural images from 3D scenes has been a long standing goal in computer graphics. On the other hand, recent developments in deep neural networks allow for trainable models that can produce natural-looking images with…

Computer Vision and Pattern Recognition · Computer Science 2018-12-04 Hassan Abu Alhaija , Siva Karthik Mustikovela , Andreas Geiger , Carsten Rother

In this paper we propose a novel approach to generate a synthetic aerial dataset for application in UAV monitoring. We propose to accentuate shape-based object representation by applying texture randomization. A diverse dataset with…

Computer Vision and Pattern Recognition · Computer Science 2022-03-09 Antonella Barisic , Frano Petric , Stjepan Bogdan

Image-based modeling techniques can now generate photo-realistic 3D models from images. But it is up to users to provide high quality images with good coverage and view overlap, which makes the data capturing process tedious and time…

Computer Vision and Pattern Recognition · Computer Science 2018-03-08 Rui Huang , Danping Zou , Richard Vaughan , Ping Tan

Synthetic data is being used lately for training deep neural networks in computer vision applications such as object detection, object segmentation and 6D object pose estimation. Domain randomization hereby plays an important role in…

Computer Vision and Pattern Recognition · Computer Science 2024-05-13 Parth Rawal , Mrunal Sompura , Wolfgang Hintze

Diffusion models (DMs) excel in photo-realistic image synthesis, but their adaptation to LiDAR scene generation poses a substantial hurdle. This is primarily because DMs operating in the point space struggle to preserve the curve-like…

Computer Vision and Pattern Recognition · Computer Science 2024-04-22 Haoxi Ran , Vitor Guizilini , Yue Wang

We propose a novel approach to synthesizing images that are effective for training object detectors. Starting from a small set of real images, our algorithm estimates the rendering parameters required to synthesize similar images given a…

Computer Vision and Pattern Recognition · Computer Science 2015-06-30 Artem Rozantsev , Vincent Lepetit , Pascal Fua

Methods to extract information from the tracking of mobile objects/particles have broad interest in biological and physical sciences. Techniques based on simple criteria of proximity in time-consecutive snapshots are useful to identify the…

Data Analysis, Statistics and Probability · Physics 2015-03-13 M. Chertkov , L. Kroc , F. Krzakala , M. Vergassola , L. Zdeborová

Despite diffusion models' superior capabilities in modeling complex distributions, there are still non-trivial distributional discrepancies between generated and ground-truth images, which has resulted in several notable problems in image…

Computer Vision and Pattern Recognition · Computer Science 2024-10-08 Yujian Liu , Yang Zhang , Tommi Jaakkola , Shiyu Chang

Generating realistic shadows for inserted objects requires reasoning about scene geometry and illumination. However, most existing methods operate purely in image space, leaving the physical relationship between objects, lighting, and…

Computer Vision and Pattern Recognition · Computer Science 2026-03-20 Shilin Hu , Jingyi Xu , Akshat Dave , Dimitris Samaras , Hieu Le

Precise calibration is a must for high reliance 3D computer vision algorithms. A challenging case is when the camera is behind a protective glass or transparent object: due to refraction, the image is heavily distorted; the pinhole camera…

Computer Vision and Pattern Recognition · Computer Science 2019-09-25 Szabolcs Pável , Csanád Sándor , Lehel Csató

With the high focus on autonomous aerial refueling recently, it becomes increasingly urgent to design efficient methods or algorithms to solve AAR problems in complicated aerial environments. Apart from the complex aerodynamic disturbance,…

Robotics · Computer Science 2023-05-30 Quan Quan , Runxiao Liu , Hao Liu , Zeqing Ma , Jinrui Ren