Christian R. Helmrich

According to our database, Christian R. Helmrich authored at least 30 papers between 2011 and 2024.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2024

Convex-hull Estimation using XPSNR for Versatile Video Coding.

Vignesh V. Menon, Christian R. Helmrich, Adam Wieckowski, Benjamin Bross, Detlev Marpe

CoRR, 2024

Fast First Pass in Two-Pass Video Encoding Using Sub-Sampling.

Anastasia Henkel, Christian R. Helmrich, Tobias Hinz, Jens Brandenburg, Adam Wieckowski, Benjamin Bross, Detlev Marpe, Thomas Wiegand

Proceedings of the Picture Coding Symposium, 2024

2023

A Constrained Variable Bit Rate (CVBR) Algorithm for VVenC, an Open VVC Encoder Implementation.

Christian R. Helmrich, Christian Bartnik, Jens Brandenburg, Adam Wieckowski, Benjamin Bross, Detlev Marpe

Proceedings of the IEEE International Conference on Visual Communications and Image Processing, 2023

All-Intra Rate Control Using Low Complexity Video Features for Versatile Video Coding.

Vignesh V. Menon, Anastasia Henkel, Prajit T. Rajendran, Christian R. Helmrich, Adam Wieckowski, Benjamin Bross, Christian Timmerer, Detlev Marpe

Proceedings of the IEEE International Conference on Image Processing, 2023

Finalization of VVenC's Screen Content Detector and Two-Pass Rate Control Using Pre-Filtering Statistics.

Christian R. Helmrich, Anastasia Henkel, Tobias Hinz, Adam Wieckowski, Benjamin Bross, Detlev Marpe

Proceedings of the IEEE International Conference on Image Processing, 2023

2022

An Optimized Temporal Filter Implementation for Practical Applications.

Adam Wieckowski, Tobias Hinz, Christian R. Helmrich, Benjamin Bross, Detlev Marpe

Proceedings of the Picture Coding Symposium, 2022

A Scene Change and Noise Aware Rate Control Method for VVenC, An Open VVC Encoder Implementation.

Christian R. Helmrich, Christian Bartnik, Jens Brandenburg, Valeri George, Tobias Hinz, Christian Lehmann, Ivan Zupancic, Adam Wieckowski, Benjamin Bross, Detlev Marpe

Proceedings of the Picture Coding Symposium, 2022

2021

Quantization and Entropy Coding in the Versatile Video Coding (VVC) Standard.

Heiko Schwarz, Muhammed Z. Coban, Marta Karczewicz, Tzu-Der Chuang, Frank Bossen, Alexander Alshin, Jani Lainema, Christian R. Helmrich, Thomas Wiegand

IEEE Trans. Circuits Syst. Video Technol., 2021

Visually Optimized Two-Pass Rate Control for Video Coding Using the Low-Complexity XPSNR Model.

Christian R. Helmrich, Ivan Zupancic, Jens Brandenburg, Valeri George, Adam Wieckowski, Benjamin Bross

Proceedings of the International Conference on Visual Communications and Image Processing, 2021

Vvenc: An Open And Optimized Vvc Encoder Implementation.

Adam Wieckowski, Jens Brandenburg, Tobias Hinz, Christian Bartnik, Valeri George, Gabriel Hege, Christian R. Helmrich, Anastasia Henkel, Christian Lehmann, Christian Stoffers, Ivan Zupancic, Benjamin Bross, Detlev Marpe

Proceedings of the 2021 IEEE International Conference on Multimedia & Expo Workshops, 2021

2020

Video Compression Using Generalized Binary Partitioning, Trellis Coded Quantization, Perceptually Optimized Encoding, and Advanced Prediction and Transform Coding.

Jonathan Pfaff, Heiko Schwarz, Detlev Marpe, Benjamin Bross, Santiago De-Luxán-Hernández, Philipp Helle, Christian R. Helmrich, Tobias Hinz, Wang-Q Lim, Jackie Ma, Tung Nguyen, Jennifer Rasch, Michael Schäfer, Mischa Siekmann, Gayathri Venugopal, Adam Wieckowski, Martin Winken, Thomas Wiegand

IEEE Trans. Circuits Syst. Video Technol., 2020

Xpsnr: A Low-Complexity Extension of The Perceptually Weighted Peak Signal-To-Noise Ratio For High-Resolution Video Quality Assessment.

Christian R. Helmrich, Mischa Siekmann, Sören Becker, Sebastian Bosse, Detlev Marpe, Thomas Wiegand

Proceedings of the 2020 IEEE International Conference on Acoustics, 2020

2019

Inter-Component Transform for Color Video Coding.

Christian Rudat, Christian R. Helmrich, Jani Lainema, Tung Nguyen, Heiko Schwarz, Detlev Marpe, Thomas Wiegand

Proceedings of the Picture Coding Symposium, 2019

A Study of the Perceptually Weighted Peak Signal-To-Noise Ratio (WPSNR) for Image Compression.

Johannes Erfurt, Christian R. Helmrich, Sebastian Bosse, Heiko Schwarz, Detlev Marpe, Thomas Wiegand

Proceedings of the 2019 IEEE International Conference on Image Processing, 2019

Neural Network Guided Perceptually Optimized Bit-Allocation for Block-Based Image and Video Compression.

Sebastian Bosse, Michael Dietzel, Sören Becker, Christian R. Helmrich, Mischa Siekmann, Heiko Schwarz, Detlev Marpe, Thomas Wiegand

Proceedings of the 2019 IEEE International Conference on Image Processing, 2019

Perceptually Optimized Bit-Allocation and Associated Distortion Measure for Block-Based Image or Video Coding.

Christian R. Helmrich, Sebastian Bosse, Mischa Siekmann, Heiko Schwarz, Detlev Marpe, Thomas Wiegand

Proceedings of the Data Compression Conference, 2019

2018

A Spectrally Adaptive Noise Filling Tool for Perceptual Transform Coding of Still Images.

Christian R. Helmrich, Sebastian Bosse, Paul Keydel, Heiko Schwarz, Detlev Marpe, Thomas Wiegand

Proceedings of the 8th IEEE International Conference on Consumer Electronics - Berlin, 2018

2017

Efficient Perceptual Audio Coding Using Cosine and Sine Modulated Lapped Transforms.

Christian R. Helmrich

PhD thesis, 2017

2016

Audio Coding Using Overlap and Kernel Adaptation.

Christian R. Helmrich, Bernd Edler

IEEE Signal Process. Lett., 2016

Signal-adaptive switching of overlap ratio in audio transform coding.

Christian R. Helmrich, Bernd Edler

Proceedings of the 2016 IEEE International Conference on Acoustics, 2016

2015

Signal-adaptive transform kernel switching for stereo audio coding.

Christian R. Helmrich, Bernd Edler

Proceedings of the 2015 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, 2015

Low-complexity and robust coding mode decision in the EVS coder.

Emmanuel Ravelli, Christian R. Helmrich, Guillaume Fuchs, Markus Multrus

Proceedings of the 2015 IEEE International Conference on Acoustics, 2015

Spectral envelope reconstruction via IGF for audio transform coding.

Christian R. Helmrich, Andreas Niedermeier, Sascha Disch, Florin Ghido

Proceedings of the 2015 IEEE International Conference on Acoustics, 2015

Low delay LPC and MDCT-based audio coding in the EVS codec.

Guillaume Fuchs, Christian R. Helmrich, Goran Markovic, Matthias Neusinger, Emmanuel Ravelli, Takehiro Moriya

Proceedings of the 2015 IEEE International Conference on Acoustics, 2015

Arithmetic coding of speech and audio spectra using tcx based on linear predictive spectral envelopes.

Tom Bäckström, Christian R. Helmrich

Proceedings of the 2015 IEEE International Conference on Acoustics, 2015

Harmonic model for MDCT based audio coding with LPC envelope.

Takehiro Moriya, Yutaka Kamamoto, Noboru Harada, Tom Bäckström, Christian R. Helmrich, Guillaume Fuchs

Proceedings of the 23rd European Signal Processing Conference, 2015

Low-complexity semi-parametric joint-stereo audio transform coding.

Christian R. Helmrich, Andreas Niedermeier, Stefan Bayer, Bernd Edler

Proceedings of the 23rd European Signal Processing Conference, 2015

2014

Decorrelated innovative codebooks for ACELP using factorization of autocorrelation matrix.

Tom Bäckström, Christian R. Helmrich

Proceedings of the 15th Annual Conference of the International Speech Communication Association, 2014

Improved low-delay MDCT-based coding of both stationary and transient audio signals.

Christian R. Helmrich, Goran Markovic, Bernd Edler

Proceedings of the IEEE International Conference on Acoustics, 2014

2011

Efficient transform coding of two-channel audio signals by means of complex-valued stereo prediction.

Christian R. Helmrich, Pontus Carlsson, Sascha Disch, Bernd Edler, Johannes Hilpert, Matthias Neusinger, Heiko Purnhagen, Nikolaus Rettelbach, Julien Robilliard, Lars F. Villemoes

Proceedings of the IEEE International Conference on Acoustics, 2011