Search Results for author: Ioannis Katsavounidis

Found 9 papers, 3 papers with code

Encoding Time and Energy Model for SVT-AV1 based on Video Complexity

no code implementations29 Jan 2024 Lena Eichermüller, Gaurang Chaudhari, Ioannis Katsavounidis, Zhijun Lei, Hassene Tmar, Christian Herglotz, André Kaup

We propose an encoding time and energy model for SVT-AV1 based on empirical relations between the encoding time and video parameters as well as encoder configurations.

A FUNQUE Approach to the Quality Assessment of Compressed HDR Videos

no code implementations13 Dec 2023 Abhinau K. Venkataramanan, Cosmin Stejerean, Ioannis Katsavounidis, Alan C. Bovik

Recent years have seen steady growth in the popularity and availability of High Dynamic Range (HDR) content, particularly videos, streamed over the internet.

Bitrate Ladder Construction using Visual Information Fidelity

no code implementations12 Dec 2023 Krishna Srikar Durbha, Hassene Tmar, Cosmin Stejerean, Ioannis Katsavounidis, Alan C. Bovik

Over the past few years, a variety of methods have been proposed to construct optimal bitrate ladders including using low-level features to predict cross-over bitrates, optimal resolutions for each bitrate, predicting visual quality, etc.

Encoder Complexity Control in SVT-AV1 by Speed-Adaptive Preset Switching

1 code implementation11 Jul 2023 Lena Eichermüller, Gaurang Chaudhari, Ioannis Katsavounidis, Zhijun Lei, Hassene Tmar, André Kaup, Christian Herglotz

Current developments in video encoding technology lead to continuously improving compression performance but at the expense of increasingly higher computational demands.

Study of Subjective and Objective Quality Assessment of Mobile Cloud Gaming Videos

no code implementations26 May 2023 Avinab Saha, Yu-Chih Chen, Chase Davis, Bo Qiu, Xiaoming Wang, Rahul Gowda, Ioannis Katsavounidis, Alan C. Bovik

We present the outcomes of a recent large-scale subjective study of Mobile Cloud Gaming Video Quality Assessment (MCG-VQA) on a diverse set of gaming videos.

Video Quality Assessment Visual Question Answering (VQA)

One Transform To Compute Them All: Efficient Fusion-Based Full-Reference Video Quality Assessment

no code implementations6 Apr 2023 Abhinau K. Venkataramanan, Cosmin Stejerean, Ioannis Katsavounidis, Alan C. Bovik

The Visual Multimethod Assessment Fusion (VMAF) algorithm has recently emerged as a state-of-the-art approach to video quality prediction, that now pervades the streaming and social media industry.

Computational Efficiency Video Compression +1

Lightweight Image Codec via Multi-Grid Multi-Block-Size Vector Quantization (MGBVQ)

no code implementations25 Sep 2022 Yifan Wang, Zhanxuan Mei, Ioannis Katsavounidis, C. -C. Jay Kuo

The fundamental idea of image coding is to remove correlations among pixels before quantization and entropy coding, e. g., the discrete cosine transform (DCT) and intra predictions, adopted by modern image coding standards.

Quantization

A Hitchhiker's Guide to Structural Similarity

1 code implementation16 Jan 2021 Abhinau K. Venkataramanan, Chengyang Wu, Alan C. Bovik, Ioannis Katsavounidis, Zafar Shahid

The Structural Similarity (SSIM) Index is a very widely used image/video quality model that continues to play an important role in the perceptual evaluation of compression algorithms, encoding recipes and numerous other image/video processing algorithms.

MS-SSIM SSIM

Cannot find the paper you are looking for? You can Submit a new open access paper.