Christian R. Helmrich

34 papers A 1B 7C 6Misc 9Journal 5Unranked 5

Year	Rank	Type	Title / Venue / Authors
2025	Misc	`conf`	Efficient MDCT-Based Multi-Channel Coding with Perceptual Whitening and Broadband ILD Compensation. ICASSP Goran Markovic, Eleni Fotopoulou, Jan Frederik Kiene, Christian R. Helmrich
2024	B	`conf`	Convex-Hull Estimation using Xpsnr for Versatile Video Coding. ICIP Vignesh V. Menon, Christian R. Helmrich, Adam Wieckowski, Benjamin Bross, Detlev Marpe
2024	J	`jnl`	Convex-hull Estimation using XPSNR for Versatile Video Coding. CoRR Vignesh V. Menon, Christian R. Helmrich, Adam Wieckowski, Benjamin Bross, Detlev Marpe
2024	B	`conf`	Fast Constant-Quality Video Encoding Using VVENC With Rate Capping Based On Pre-Analysis Statistics. ICIP Christian R. Helmrich, Valeri George, Vignesh V. Menon, Adam Wieckowski, Benjamin Bross, Detlev Marpe
2024	C	`conf`	Fast First Pass in Two-Pass Video Encoding Using Sub-Sampling. PCS Anastasia Henkel, Christian R. Helmrich, Tobias Hinz, Jens Brandenburg, Adam Wieckowski, Benjamin Bross, Detlev Marpe, Thomas Wiegand
2023	C	`conf`	A Constrained Variable Bit Rate (CVBR) Algorithm for VVenC, an Open VVC Encoder Implementation. VCIP Christian R. Helmrich, Christian Bartnik, Jens Brandenburg, Adam Wieckowski, Benjamin Bross, Detlev Marpe
2023	B	`conf`	All-Intra Rate Control Using Low Complexity Video Features for Versatile Video Coding. ICIP Vignesh V. Menon, Anastasia Henkel, Prajit T. Rajendran, Christian R. Helmrich, Adam Wieckowski, Benjamin Bross, Christian Timmerer, Detlev Marpe
2023	J	`jnl`	All-intra rate control using low complexity video features for Versatile Video Coding. CoRR Vignesh V. Menon, Anastasia Henkel, Prajit T. Rajendran, Christian R. Helmrich, Adam Wieckowski, Benjamin Bross, Christian Timmerer, Detlev Marpe
2023	B	`conf`	Finalization of VVenC's Screen Content Detector and Two-Pass Rate Control Using Pre-Filtering Statistics. ICIP Christian R. Helmrich, Anastasia Henkel, Tobias Hinz, Adam Wieckowski, Benjamin Bross, Detlev Marpe
2022	C	`conf`	A Scene Change and Noise Aware Rate Control Method for VVenC, An Open VVC Encoder Implementation. PCS Christian R. Helmrich, Christian Bartnik, Jens Brandenburg, Valeri George, Tobias Hinz, Christian Lehmann, Ivan Zupancic, Adam Wieckowski, Benjamin Bross, Detlev Marpe
2022	C	`conf`	An Optimized Temporal Filter Implementation for Practical Applications. PCS Adam Wieckowski, Tobias Hinz, Christian R. Helmrich, Benjamin Bross, Detlev Marpe
2021	J	`jnl`	Quantization and Entropy Coding in the Versatile Video Coding (VVC) Standard. IEEE Trans. Circuits Syst. Video Technol. Heiko Schwarz, Muhammed Z. Coban, Marta Karczewicz, Tzu-Der Chuang, Frank Bossen, Alexander Alshin, Jani Lainema, Christian R. Helmrich, Thomas Wiegand
2021	C	`conf`	Visually Optimized Two-Pass Rate Control for Video Coding Using the Low-Complexity XPSNR Model. VCIP Christian R. Helmrich, Ivan Zupancic, Jens Brandenburg, Valeri George, Adam Wieckowski, Benjamin Bross
2021	—	`conf`	Vvenc: An Open And Optimized Vvc Encoder Implementation. ICME Workshops 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
2020	J	`jnl`	Video Compression Using Generalized Binary Partitioning, Trellis Coded Quantization, Perceptually Optimized Encoding, and Advanced Prediction and Transform Coding. IEEE Trans. Circuits Syst. Video Technol. 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
2020	Misc	`conf`	Xpsnr: A Low-Complexity Extension of The Perceptually Weighted Peak Signal-To-Noise Ratio For High-Resolution Video Quality Assessment. ICASSP Christian R. Helmrich, Mischa Siekmann, Sören Becker, Sebastian Bosse, Detlev Marpe, Thomas Wiegand
2019	B	`conf`	A Study of the Perceptually Weighted Peak Signal-To-Noise Ratio (WPSNR) for Image Compression. ICIP Johannes Erfurt, Christian R. Helmrich, Sebastian Bosse, Heiko Schwarz, Detlev Marpe, Thomas Wiegand
2019	C	`conf`	Inter-Component Transform for Color Video Coding. PCS Christian Rudat, Christian R. Helmrich, Jani Lainema, Tung Nguyen, Heiko Schwarz, Detlev Marpe, Thomas Wiegand
2019	B	`conf`	Neural Network Guided Perceptually Optimized Bit-Allocation for Block-Based Image and Video Compression. ICIP Sebastian Bosse, Michael Dietzel, Sören Becker, Christian R. Helmrich, Mischa Siekmann, Heiko Schwarz, Detlev Marpe, Thomas Wiegand
2019	B	`conf`	Perceptually Optimized Bit-Allocation and Associated Distortion Measure for Block-Based Image or Video Coding. DCC Christian R. Helmrich, Sebastian Bosse, Mischa Siekmann, Heiko Schwarz, Detlev Marpe, Thomas Wiegand
2018	—	`conf`	A Spectrally Adaptive Noise Filling Tool for Perceptual Transform Coding of Still Images. ICCE-Berlin Christian R. Helmrich, Sebastian Bosse, Paul Keydel, Heiko Schwarz, Detlev Marpe, Thomas Wiegand
2017	—	`—`	Efficient Perceptual Audio Coding Using Cosine and Sine Modulated Lapped Transforms. Christian R. Helmrich
2016	J	`jnl`	Audio Coding Using Overlap and Kernel Adaptation. IEEE Signal Process. Lett. Christian R. Helmrich, Bernd Edler
2016	Misc	`conf`	Signal-adaptive switching of overlap ratio in audio transform coding. ICASSP Christian R. Helmrich, Bernd Edler
2015	Misc	`conf`	Arithmetic coding of speech and audio spectra using tcx based on linear predictive spectral envelopes. ICASSP Tom Bäckström, Christian R. Helmrich
2015	—	`conf`	Harmonic model for MDCT based audio coding with LPC envelope. EUSIPCO Takehiro Moriya, Yutaka Kamamoto, Noboru Harada, Tom Bäckström, Christian R. Helmrich, Guillaume Fuchs
2015	Misc	`conf`	Low delay LPC and MDCT-based audio coding in the EVS codec. ICASSP Guillaume Fuchs, Christian R. Helmrich, Goran Markovic, Matthias Neusinger, Emmanuel Ravelli, Takehiro Moriya
2015	Misc	`conf`	Low-complexity and robust coding mode decision in the EVS coder. ICASSP Emmanuel Ravelli, Christian R. Helmrich, Guillaume Fuchs, Markus Multrus
2015	—	`conf`	Low-complexity semi-parametric joint-stereo audio transform coding. EUSIPCO Christian R. Helmrich, Andreas Niedermeier, Stefan Bayer, Bernd Edler
2015	—	`conf`	Signal-adaptive transform kernel switching for stereo audio coding. WASPAA Christian R. Helmrich, Bernd Edler
2015	Misc	`conf`	Spectral envelope reconstruction via IGF for audio transform coding. ICASSP Christian R. Helmrich, Andreas Niedermeier, Sascha Disch, Florin Ghido
2014	A	`conf`	Decorrelated innovative codebooks for ACELP using factorization of autocorrelation matrix. INTERSPEECH Tom Bäckström, Christian R. Helmrich
2014	Misc	`conf`	Improved low-delay MDCT-based coding of both stationary and transient audio signals. ICASSP Christian R. Helmrich, Goran Markovic, Bernd Edler
2011	Misc	`conf`	Efficient transform coding of two-channel audio signals by means of complex-valued stereo prediction. ICASSP Christian R. Helmrich, Pontus Carlsson, Sascha Disch, Bernd Edler, Johannes Hilpert, Matthias Neusinger, Heiko Purnhagen, Nikolaus Rettelbach, Julien Robilliard, Lars F. Villemoes