Search Results for author: Christian Herglotz

Found 51 papers, 3 papers with code

SVT-AV1 Encoding Bitrate Estimation Using Motion Search Information

no code implementations8 Jul 2024 Lena Eichermüller, Gaurang Chaudhari, Ioannis Katsavounidis, Zhijun Lei, Hassene Tmar, Christian Herglotz, André Kaup

Enabling high compression efficiency while keeping encoding energy consumption at a low level, requires prioritization of which videos need more sophisticated encoding techniques.

Energy Reduction Opportunities in HDR Video Encoding

no code implementations17 Jun 2024 Christian Herglotz, Steven Le Moan, Alexandre Mercat

This paper investigates the energy consumption of video encoding for high dynamic range videos.

Towards Video Codec Performance Evaluation: A Rate-Energy-Distortion Perspective

no code implementations28 May 2024 Geetha Ramasubbu, André Kaup, Christian Herglotz

The Bj{\o}ntegaard Delta rate (BD-rate) objectively assesses the coding efficiency of video codecs using the rate-distortion (R-D) performance but overlooks encoding energy, which is crucial in practical applications, especially for those on handheld devices.

Predicting the Energy Demand of a Hardware Video Decoder with Unknown Design Using Software Profiling

no code implementations15 Feb 2024 Matthias Kränzler, Christian Herglotz, André Kaup

By using multiple video coding standards for model training, we can predict the complexity of an unknown hardware decoder with a minimum error of 4. 54% without using the corresponding hardware decoder for training.

Decoder

A Comprehensive Review of Software and Hardware Energy Efficiency of Video Decoders

no code implementations14 Feb 2024 Matthias Kränzler, Christian Herglotz, André Kaup

We find that AV1 is a sweet spot for optimized software decoder implementations with an additional energy demand of 16. 55% and bitrate savings of -43. 95% compared to VP9.

Decoder

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.

Extended Signaling Methods for Reduced Video Decoder Power Consumption Using Green Metadata

no code implementations26 Oct 2023 Christian Herglotz, Matthias Kränzler, Xixue Chu, Edouard Francois, Yong He, André Kaup

In this paper, we discuss one aspect of the latest MPEG standard edition on energy-efficient media consumption, also known as Green Metadata (ISO/IEC 232001-11), which is the interactive signaling for remote decoder-power reduction for peer-to-peer video conferencing.

Decoder

Improving HEVC Encoding of Rendered Video Data Using True Motion Information

no code implementations13 Sep 2023 Christian Herglotz, David Müller, Andreas Weinlich, Frank Bauer, Michael Ortner, Marc Stamminger, André Kaup

This paper shows that motion vectors representing the true motion of an object in a scene can be exploited to improve the encoding process of computer generated video sequences.

Motion Estimation

On Versatile Video Coding at UHD with Machine-Learning-Based Super-Resolution

no code implementations12 Aug 2023 Kristian Fischer, Christian Herglotz, André Kaup

Coding 4K data has become of vital interest in recent years, since the amount of 4K data is significantly increasing.

4k Image Super-Resolution

Video Decoding Energy Estimation Using Processor Events

no code implementations26 Jul 2023 Christian Herglotz, André Kaup

In this paper, we show that processor events like instruction counts or cache misses can be used to accurately estimate the processing energy of software video decoders.

Decoder

Power-Efficient Video Streaming on Mobile Devices Using Optimal Spatial Scaling

no code implementations17 Jul 2023 Christian Herglotz, André Kaup, Stéphane Coulombe, Ahmad Vakili

This paper derives optimal spatial scaling and rate control parameters for power-efficient wireless video streaming on portable devices.

Power Modeling for Virtual Reality Video Playback Applications

no code implementations17 Jul 2023 Christian Herglotz, Stéphane Coulombe, Ahmad Vakili, André Kaup

This paper proposes a method to evaluate and model the power consumption of modern virtual reality playback and streaming applications on smartphones.

Efficient coding of 360° videos exploiting inactive regions in projection formats

no code implementations17 Jul 2023 Christian Herglotz, Mohammadreza Jamali, Stéphane Coulombe, Carlos Vazquez, Ahmad Vakili

This paper presents an efficient method for encoding common projection formats in 360$^\circ$ video coding, in which we exploit inactive regions.

Component-wise Power Estimation of Electrical Devices Using Thermal Imaging

no code implementations17 Jul 2023 Christian Herglotz, Simon Grosche, Akarsh Bharadwaj, André Kaup

This paper presents a novel method to estimate the power consumption of distinct active components on an electronic carrier board by using thermal imaging.

object-detection Object Detection

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.

Processing Energy Modeling for Neural Network Based Image Compression

no code implementations29 Jun 2023 Christian Herglotz, Fabian Brand, Andy Regensky, Felix Rievel, André Kaup

Nowadays, the compression performance of neural-networkbased image compression algorithms outperforms state-of-the-art compression approaches such as JPEG or HEIC-based image compression.

Image Compression

Motion Plane Adaptive Motion Modeling for Spherical Video Coding in H.266/VVC

no code implementations23 Jun 2023 Andy Regensky, Christian Herglotz, André Kaup

Motion compensation is one of the key technologies enabling the high compression efficiency of modern video coding standards.

Motion Compensation

Video Decoding Energy Reduction Using Temporal-Domain Filtering

no code implementations12 Jun 2023 Christian Herglotz, Matthias Kränzler, Robert Ludwig, André Kaup

In this paper, we study decoding energy reduction opportunities using temporal-domain filtering and subsampling methods.

Power Reduction Opportunities on End-User Devices in Quality-Steady Video Streaming

no code implementations24 May 2023 Christian Herglotz, Werner Robitza, Alexander Raake, Tobias Hossfeld, André Kaup

We find that based on the power consumption of the streaming sessions from the crowdsourcing dataset, devices could save more than 55% of power if all participants adhere to low-power settings.

The Bjøntegaard Bible -- Why your Way of Comparing Video Codecs May Be Wrong

1 code implementation25 Apr 2023 Christian Herglotz, Hannah Och, Anna Meyer, Geetha Ramasubbu, Lena Eichermüller, Matthias Kränzler, Fabian Brand, Kristian Fischer, Dat Thanh Nguyen, Andy Regensky, André Kaup

Using additional supporting points inbetween standard points defined by parameters such as the quantization parameter, we assess the interpolation error of the Bj{\o}ntegaard-Delta (BD) calculus and its impact on the final BD value.

Quantization SSIM +1

Learning Frequency-Specific Quantization Scaling in VVC for Standard-Compliant Task-driven Image Coding

1 code implementation20 Jan 2023 Kristian Fischer, Fabian Brand, Christian Herglotz, André Kaup

This is a well-known method for the human visual system, where scaling lists are derived from psycho-visual models.

Quantization

A Bit Stream Feature-Based Energy Estimator for HEVC Software Encoding

no code implementations11 Dec 2022 Geetha Ramasubbu, André Kaup, Christian Herglotz

To this end, this paper presents an energy estimator that uses a subset of bit stream features to accurately estimate the energy consumption of the HEVC software encoding process.

3-D mesh compensated wavelet lifting for 3-D+t medical CT data

no code implementations8 Dec 2022 Wolfgang Schnurrer, Thomas Richter, Jürgen Seiler, Christian Herglotz, André Kaup

We show that a 3-D mesh can obtain a higher quality of the lowpass band by 0. 28 dB with less than 40% of the model parameters of a comparable 2-D mesh.

Modeling of Energy Consumption and Streaming Video QoE using a Crowdsourcing Dataset

no code implementations11 Oct 2022 Christian Herglotz, Werner Robitza, Matthias Kränzler, André Kaup, Alexander Raake

In this paper, we perform a first analysis of both end-user power efficiency and Quality of Experience of a video streaming service.

Sweet Streams are Made of This: The System Engineer's View on Energy Efficiency in Video Communications

no code implementations30 Sep 2022 Christian Herglotz, Matthias Kränzler, Robert Schober, André Kaup

We discuss all relevant energy sinks, highlight dependencies with quality-of-service variables as well as video properties, review energy consumption models for different devices from the literature, and aggregate these existing models into a global model for the overall energy consumption of a generic online video service.

Matched Quality Evaluation of Temporally Downsampled Videos with Non-Integer Factors

no code implementations21 Sep 2022 Christian Herglotz, Geetha Ramasubbu, André Kaup

Recent research has shown that temporal downsampling of high-frame-rate sequences can be exploited to improve the rate-distortion performance in video coding.

Advanced Design Space Exploration for Joint Energy and Quality Optimization for VVC

no code implementations21 Sep 2022 Matthias Kränzler, Christian Herglotz, André Kaup

In recent studies, it could be shown that the energy demand of Versatile Video Coding (VVC) decoders can be twice as high as comparable High Efficiency Video Coding (HEVC) decoders.

Decoding Energy Modeling For Versatile Video Coding

no code implementations21 Sep 2022 Matthias Kränzler, Christian Herglotz, André Kaup

In previous research, it was shown that the software decoding energy demand of High Efficiency Video Coding (HEVC) can be reduced by 15$\%$ by using a decoding-energy-rate-distortion optimization algorithm.

Decoder

Extending Video Decoding Energy Models for 360° and HDR Video Formats in HEVC

no code implementations21 Sep 2022 Matthias Kränzler, Christian Herglotz, André Kaup

We show that bit streams of the 360{\deg}, HDR, and fisheye video format can be estimated with a mean estimation error lower than 3. 88% if the setups have the same coding bit depth.

Decoder

A Comparative Analysis of the Time and Energy Demand of Versatile Video Coding and High Efficiency Video Coding Reference Decoders

no code implementations21 Sep 2022 Matthias Kränzler, Christian Herglotz, André Kaup

The evaluation shows that the energy demand of the VTM decoder is increased significantly compared to HM and that the increase depends on the coding configuration.

Decoder

Modeling the HEVC Encoding Energy Using the Encoder Processing Time

no code implementations6 Jul 2022 Geetha Ramasubbu, André Kaup, Christian Herglotz

The global significance of energy consumption of video communication renders research on the energy need of video coding an important task.

Video Compression

Optimized Decoding-Energy-Aware Encoding in Practical VVC Implementations

no code implementations27 Jun 2022 Matthias Kränzler, Adam Wieckowski, Geetha Ramasubbu, Benjamin Bross, André Kaup, Detlev Marpe, Christian Herglotz

We show that encoding using our proposed coding tool profiles, the decoding energy efficiency is improved by over 25% with a bit rate increase of less than 5% with respect to standard encoding.

Analysis of Neural Image Compression Networks for Machine-to-Machine Communication

no code implementations13 May 2022 Kristian Fischer, Christian Forsch, Christian Herglotz, André Kaup

Video and image coding for machines (VCM) is an emerging field that aims to develop compression methods resulting in optimal bitstreams when the decoded frames are analyzed by a neural network.

Decoder Image Compression +1

A Bitstream Feature Based Model for Video Decoding Energy Estimation

no code implementations21 Apr 2022 Christian Herglotz, Yongjun Wen, Bowen Dai, Matthias Kränzler, André Kaup

In this paper we show that a small amount of bit stream features can be used to accurately estimate the energy consumption of state-of-the-art software and hardware accelerated decoder implementations for four different video codecs.

Decoder

On Intra Video Coding and In-loop Filtering for Neural Object Detection Networks

no code implementations11 Mar 2022 Kristian Fischer, Christian Herglotz, André Kaup

Classical video coding for satisfying humans as the final user is a widely investigated field of studies for visual content, and common video codecs are all optimized for the human visual system (HVS).

Autonomous Driving object-detection +2

Video Coding for Machines with Feature-Based Rate-Distortion Optimization

no code implementations11 Mar 2022 Kristian Fischer, Fabian Brand, Christian Herglotz, André Kaup

In this paper, we propose a standard-compliant feature-based RDO (FRDO) that is designed to increase the coding performance, when the decoded frame is analyzed by a neural network in a video coding for machine scenario.

Quantization

Modeling the Energy Consumption of HEVC Intra Decoding

no code implementations3 Mar 2022 Christian Herglotz, Dominic Springer, Andrea Eichenseer, André Kaup

Battery life is one of the major limitations to mobile device use, which makes research on energy efficient soft- and hardware an important task.

Decoder

Joint Optimization of Rate, Distortion, and Decoding Energy for HEVC Intraframe Coding

no code implementations3 Mar 2022 Christian Herglotz, André Kaup

This paper presents a novel algorithm that aims at minimizing the required decoding energy by exploiting a general energy model for HEVC-decoder solutions.

Decoder Quantization

Estimating the HEVC Decoding Energy Using the Decoder Processing Time

no code implementations3 Mar 2022 Christian Herglotz, Elisabeth Walencik, André Kaup

This paper presents a method to accurately estimate the required decoding energy for a given HEVC software decoding solution.

Decoder valid +1

Estimation of Non-Functional Properties for Embedded Hardware with Application to Image Processing

no code implementations3 Mar 2022 Christian Herglotz, Jürgen Seiler, André Kaup, Arne Hendricks, Marc Reichenbach, Dietmar Fey

In recent years, due to a higher demand for portable devices, which provide restricted amounts of processing capacity and battery power, the need for energy and time efficient hard- and software solutions has increased.

Multi-Objective Design Space Exploration for the Optimization of the HEVC Mode Decision Process

no code implementations3 Mar 2022 Christian Herglotz, Rafael Rosales, Michael Glass, Jürgen Teich, André Kaup

Finding the best possible encoding decisions for compressing a video sequence is a highly complex problem.

Decoding-Energy-Rate-Distortion Optimization for Video Coding

no code implementations2 Mar 2022 Christian Herglotz, Andreas Heindel, André Kaup

Finally, measurements of the software decoding process for HEVC-coded bit streams are performed.

Modeling the Energy Consumption of the HEVC Decoding Process

no code implementations1 Mar 2022 Christian Herglotz, Dominic Springer, Marc Reichenbach, Benno Stabernack, André Kaup

To show the modeling capabilities in general, we test the estimation performance for different decoding software and hardware solutions, where we find that the proposed model outperforms the models from literature by reaching frame-wise mean estimation errors of less than 7% for software and less than 15% for hardware based systems.

A Novel Viewport-Adaptive Motion Compensation Technique for Fisheye Video

no code implementations28 Feb 2022 Andy Regensky, Christian Herglotz, André Kaup

However, the approach does not consider the large field of view of fisheye lenses that requires the consideration of different motion planes in 3D space.

Motion Compensation

Beyond Bjøntegaard: Limits of Video Compression Performance Comparisons

no code implementations25 Feb 2022 Christian Herglotz, Matthias Kränzler, Ruben Mons, André Kaup

For 20 years, the gold standard to evaluate the performance of video codecs is to calculate average differences between ratedistortion curves, also called the "Bj{\o}ntegaard Delta".

valid Video Compression

Motion-Plane-Adaptive Inter Prediction in 360-Degree Video Coding

no code implementations7 Feb 2022 Andy Regensky, Christian Herglotz, André Kaup

Based on the known projection format of the video, MPA allows to perform inter prediction on different motion planes in 3D space instead of having to work on the - in theory arbitrarily mapped - 2D image representation directly.

Energy Efficient Video Decoding for VVC Using a Greedy Strategy Based Design Space Exploration

no code implementations23 Nov 2021 Matthias Kränzler, Christian Herglotz, André Kaup

IP traffic has increased significantly in recent years, and it is expected that this progress will continue.

4k Decoder

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