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Precise continuum normalisation of merged \'{e}chelle spectra is a demanding task necessary for various detailed spectroscopic analyses. Automatic methods have limited effectiveness due to the variety of features present in the spectra of…

Instrumentation and Methods for Astrophysics · Physics 2022-03-30 Tomasz Różański , Ewa Niemczura , Jakub Lemiesz , Natalia Posiłek , Paweł Różański

Deep learning models have been used for a variety of image processing tasks. However, most of these models are developed through supervised learning approaches, which rely heavily on the availability of large-scale annotated datasets.…

Computer Vision and Pattern Recognition · Computer Science 2024-02-26 Jaden Myers , Keyhan Najafian , Farhad Maleki , Katie Ovens

A comprehensive hybrid library of synthetic stellar spectra based on three original grids of model atmosphere spectra by Kurucz (1995), Fluks et al. (1994), and Bessell et al. (1989, 1991) is presented. The combined library is intended for…

Astrophysics · Physics 2016-08-30 T. Lejeune , F. Cuisinier , R. Buser

The stellar population synthesis in unresolved composite objects is a very tricky problem. Indeed, it is a degenerate problem since many parameters affect the observables. The stellar population synthesis issue thus deserves a deep and…

Astrophysics · Physics 2009-11-10 J. Moultaka

Recent breakthroughs in synthetic data generation approaches made it possible to produce highly photorealistic images which are hardly distinguishable from real ones. Furthermore, synthetic generation pipelines have the potential to…

Computer Vision and Pattern Recognition · Computer Science 2023-07-06 Alon Shoshan , Nadav Bhonker , Igor Kviatkovsky , Matan Fintz , Gerard Medioni

State-of-the-art stereo matching (SM) models trained on synthetic data often fail to generalize to real data domains due to domain differences, such as color, illumination, contrast, and texture. To address this challenge, we leverage data…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Shuangli Du , Jing Wang , Minghua Zhao , Zhenyu Xu , Jie Li

Automatic discovery and curve fitting of absorption bands in hyperspectral data can enable the analyst to identify materials present in a scene by comparison with library spectra. This procedure is common in laboratory spectra, but is…

Instrumentation and Methods for Astrophysics · Physics 2014-01-23 Adrian J. Brown

Currently, image generation and synthesis have remarkably progressed with generative models. Despite photo-realistic results, intrinsic discrepancies are still observed in the frequency domain. The spectral discrepancy appeared not only in…

Computer Vision and Pattern Recognition · Computer Science 2024-03-11 Seokjun Lee , Seung-Won Jung , Hyunseok Seo

Synthetic data has emerged as a cost-effective alternative to real data for training artificial neural networks (ANN). However, the disparity between synthetic and real data results in a domain gap. That gap leads to poor performance and…

Machine Learning · Computer Science 2025-09-03 Paul Wachter , Lukas Niehaus , Julius Schöning

Automatic drum transcription is a critical tool in Music Information Retrieval for extracting and analyzing the rhythm of a music track, but it is limited by the size of the datasets available for training. A popular method used to increase…

Sound · Computer Science 2024-07-30 Mickaël Zehren , Marco Alunno , Paolo Bientinesi

A new generative technique is presented in this paper that uses Deep Learning to reconstruct stellar spectra based on a set of stellar parameters. Two different Neural Networks were trained allowing the generation of new spectra. First, an…

Solar and Stellar Astrophysics · Physics 2024-01-25 Marwan Gebran

With the advent of generative modeling techniques, synthetic data and its use has penetrated across various domains from unstructured data such as image, text to structured dataset modeling healthcare outcome, risk decisioning in financial…

Machine Learning · Computer Science 2021-05-11 Aman Gupta , Deepak Bhatt , Anubha Pandey

In object detection, data amount and cost are a trade-off, and collecting a large amount of data in a specific domain is labor intensive. Therefore, existing large-scale datasets are used for pre-training. However, conventional transfer…

Computer Vision and Pattern Recognition · Computer Science 2022-09-01 Yuzuru Nakamura , Yasunori Ishii , Yuki Maruyama , Takayoshi Yamashita

In cross-domain retrieval, a model is required to identify images from the same semantic category across two visual domains. For instance, given a sketch of an object, a model needs to retrieve a real image of it from an online store's…

Computer Vision and Pattern Recognition · Computer Science 2024-03-20 Samarth Mishra , Carlos D. Castillo , Hongcheng Wang , Kate Saenko , Venkatesh Saligrama

Photometric redshift estimation algorithms are often based on representative data from observational campaigns. Data-driven methods of this type are subject to a number of potential deficiencies, such as sample bias and incompleteness.…

Cosmology and Nongalactic Astrophysics · Physics 2022-07-06 Nesar Ramachandra , Jonás Chaves-Montero , Alex Alarcon , Arindam Fadikar , Salman Habib , Katrin Heitmann

Exploiting synthetic data to learn deep models has attracted increasing attention in recent years. However, the intrinsic domain difference between synthetic and real images usually causes a significant performance drop when applying the…

Computer Vision and Pattern Recognition · Computer Science 2018-04-10 Yuhua Chen , Wen Li , Luc Van Gool

To assist in the development of machine learning methods for automated classification of spectroscopic data, we have generated a universal synthetic dataset that can be used for model validation. This dataset contains artificial spectra…

Machine Learning · Computer Science 2022-06-15 Jan Schuetzke , Nathan J. Szymanski , Markus Reischl

The performance of neural network models is often limited by the availability of big data sets. To treat this problem, we survey and develop novel synthetic data generation and augmentation techniques for enhancing low/zero-sample learning…

Computer Vision and Pattern Recognition · Computer Science 2021-02-02 Nathan Clement , Alan Schoen , Arnold Boedihardjo , Andrew Jenkins

Modern deep learning models in computer vision require large datasets of real images, which are difficult to curate and pose privacy and legal concerns, limiting their commercial use. Recent works suggest synthetic data as an alternative,…

Computer Vision and Pattern Recognition · Computer Science 2025-06-25 Farnood Salehi , Vandit Sharma , Amirhossein Askari Farsangi , Tunç Ozan Aydın

A major obstacle to the development of effective monocular depth estimation algorithms is the difficulty in obtaining high-quality depth data that corresponds to collected RGB images. Collecting this data is time-consuming and costly, and…

Computer Vision and Pattern Recognition · Computer Science 2024-05-03 Seungyeop Lee , Knut Peterson , Solmaz Arezoomandan , Bill Cai , Peihan Li , Lifeng Zhou , David Han