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Beautification and augmented reality filters are very popular in applications that use selfie images captured with smartphones or personal devices. However, they can distort or modify biometric features, severely affecting the capability of…

Computer Vision and Pattern Recognition · Computer Science 2022-10-10 Pontus Hedman , Vasilios Skepetzis , Kevin Hernandez-Diaz , Josef Bigun , Fernando Alonso-Fernandez

The JPEG algorithm compresses a digital image by filtering its high spatial-frequency components. Similarly, we introduce a quantum algorithm that uses the quantum Fourier transform to discard the high spatial-frequency qubits of an image,…

Quantum Physics · Physics 2024-01-09 Simone Roncallo , Lorenzo Maccone , Chiara Macchiavello

In recent years, there has been rapid development in learned image compression techniques that prioritize ratedistortion-perceptual compression, preserving fine details even at lower bit-rates. However, current learning-based image…

Computer Vision and Pattern Recognition · Computer Science 2023-05-19 Peirong Ning , Wei Jiang , Ronggang Wang

State-of-the-art deep face recognition approaches report near perfect performance on popular benchmarks, e.g., Labeled Faces in the Wild. However, their performance deteriorates significantly when they are applied on low quality images,…

Computer Vision and Pattern Recognition · Computer Science 2019-07-26 Omid Abdollahi Aghdam , Behzad Bozorgtabar , Hazım Kemal Ekenel , Jean-Philippe Thiran

Prototype Memory is a powerful model for face representation learning. It enables training face recognition models on datasets of any size by generating prototypes (classifier weights) on the fly and efficiently utilizing them. Prototype…

Computer Vision and Pattern Recognition · Computer Science 2025-10-31 Evgeny Smirnov , Vasiliy Galyuk , Evgeny Lukyanets

Recognition in low quality face datasets is challenging because facial attributes are obscured and degraded. Advances in margin-based loss functions have resulted in enhanced discriminability of faces in the embedding space. Further,…

Computer Vision and Pattern Recognition · Computer Science 2023-02-17 Minchul Kim , Anil K. Jain , Xiaoming Liu

Although variable-rate compressed image formats such as JPEG are widely used to efficiently encode images, they have not found their way into real-time rendering due to special requirements such as random access to individual texels. In…

Graphics · Computer Science 2025-10-13 Elias Kristmann , Markus Schütz , Michael Wimmer

Lossy JPEG compression is a widely used compression technique. Normally the JPEG standard technique uses three process mapping reduces interpixel redundancy, quantization, which is lossy process and entropy encoding, which is considered…

Multimedia · Computer Science 2012-08-15 Bheshaj Kumar , Kavita Thakur , G. R. Sinha

It is well known that deep learning approaches to face recognition and facial landmark detection suffer from biases in modern training datasets. In this work, we propose to use synthetic face images to reduce the negative effects of dataset…

Computer Vision and Pattern Recognition · Computer Science 2019-06-25 Adam Kortylewski , Bernhard Egger , Andreas Morel-Forster , Andreas Schneider , Thomas Gerig , Clemens Blumer , Corius Reyneke , Thomas Vetter

Data hiding is one widely used approach for protecting authentication and ownership. Most multimedia content like images and videos are transmitted or saved in the compressed form. This kind of lossy compression, such as JPEG, can destroy…

Image and Video Processing · Electrical Eng. & Systems 2021-01-05 Chaoning Zhang , Adil Karjauv , Philipp Benz , In So Kweon

JPEG XL is a new image coding system offering state-of-the-art compression performance, lossless JPEG recompression, and advanced features. It aims to replace JPEG, PNG, GIF, and other formats with a single universal codec. This article…

As applications using immersive media gained increased attention from both academia and industry, research in the field of point cloud compression has greatly intensified in recent years, leading to the development of the MPEG compression…

Image and Video Processing · Electrical Eng. & Systems 2024-11-01 Davi Lazzarotto , Michela Testolina , Touradj Ebrahimi

While existing face recognition systems based on local features are robust to issues such as misalignment, they can exhibit accuracy degradation when comparing images of differing resolutions. This is common in surveillance environments…

Computer Vision and Pattern Recognition · Computer Science 2013-04-09 Yongkang Wong , Conrad Sanderson , Sandra Mau , Brian C. Lovell

Face recognition systems experience severe performance degradation when processing low-quality forensic evidence imagery. This paper presents an evaluation of latent diffusion-based enhancement for improving face recognition under…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Hassan Ugail , Hamad Mansour Alawar , AbdulNasser Abbas Zehi , Ahmed Mohammad Alkendi , Ismail Lujain Jaleel

Image Compression has become an absolute necessity in today's day and age. With the advent of the Internet era, compressing files to share among other users is quintessential. Several efforts have been made to reduce file sizes while still…

Computer Vision and Pattern Recognition · Computer Science 2021-02-16 Jacob John

Recent advances in deep learning have made available large, powerful convolutional neural networks (CNN) with state-of-the-art performance in several real-world applications. Unfortunately, these large-sized models have millions of…

Machine Learning · Computer Science 2020-07-17 Giosuè Cataldo Marinò , Gregorio Ghidoli , Marco Frasca , Dario Malchiodi

This paper describes a lossy method for compressing raw images produced by CCDs or similar devices. The method is very simple: lossy quantization followed by lossless compression using general-purpose compression tools such as gzip and…

Astrophysics · Physics 2007-05-23 Alan M. Watson

Precise perception of the environment is essential in highly automated driving systems, which rely on machine learning tasks such as object detection and segmentation. Compression of sensor data is commonly used for data handling, while…

Computer Vision and Pattern Recognition · Computer Science 2025-03-31 Christian Steinhauser , Philipp Reis , Hubert Padusinski , Jacob Langner , Eric Sax

Recognizability, a key perceptual factor in human face processing, strongly affects the performance of face recognition (FR) systems in both verification and identification tasks. Effectively using recognizability to enhance feature…

Computer Vision and Pattern Recognition · Computer Science 2025-10-20 Duc-Phuong Doan-Ngo , Thanh-Dang Diep , Thanh Nguyen-Duc , Thanh-Sach LE , Nam Thoai

In this paper, we present a generative adversarial network framework that generates compressed images instead of synthesizing raw RGB images and compressing them separately. In the real world, most images and videos are stored and…

Computer Vision and Pattern Recognition · Computer Science 2019-01-24 Byeongkeun Kang , Subarna Tripathi , Truong Q. Nguyen