|
ecodis :: Short Biography |

Christian R. Helmrich, born in 1981 in Cuxhaven, Germany, received a B. Sc. degree in computer science
from
Capitol Technology University (formerly
Capitol College), Laurel, MD, USA, in 2005 and a M. Sc. degree in information & media technology
from
TU Hamburg-Harburg (TUHH),
Germany, in 2008. Between 2008 and 2013 he worked on numerous speech and audio coding solutions at
the
Fraunhofer Institute for Integrated Circuits (IIS),
Erlangen, Germany, partly as a Senior Engineer. From 2013 until 2016 Mr. Helmrich continued his work as a research assistant at
the International Audio Laboratories Erlangen, a
joint institution of Fraunhofer IIS
and
Friedrich-Alexander-Universität (FAU)
Erlangen-Nürnberg, Germany, where he completed his Dr.-Ing. degree with a dissertation on audio signal analysis
and coding. In August 2016 Dr. Helmrich joined the Video Coding and Analytics department
of
Fraunhofer Heinrich Hertz Institute (HHI),
Berlin, Germany, as a next-generation video coding researcher and developer. His main interests include audio
and video acquisition, coding, storage, and preservation as well as restoration from analog sources.
Dr. Helmrich is a Senior Member of the
IEEE.
|
|
Christian Helmrich's publications in chronologically descending order, 2019–2007
2019
C. R. Helmrich, H. Schwarz, D. Marpe, and T. Wiegand, «Clean-up and Finalization of Perceptually Optimized QP Adaptation Method in VTM»,
document JVET-M0091, Marrakech, Jan. 2019.
Zip file.
C. R. Helmrich and B. Bross, «CE11: Very Strong Deblocking with Conditional Activation Signaling (Test 11.1.1)»,
document JVET-M0092, Marrakech, Jan. 2019.
Zip file.
C. R. Helmrich, H. Schwarz, D. Marpe, and T. Wiegand, «Non-CE3: Improved Robustness for Calculation of Cross-Component Linear Model Parameters»,
document JVET-M0093, Marrakech, Jan. 2019.
Zip file.
C. R. Helmrich, S. Bosse, M. Siekmann, H. Schwarz, D. Marpe, and T. Wiegand, «Perceptually Optimized Bit-Allocation and Associated Distortion Measure for Block-Based Image or Video Coding»,
in Proc. IEEE Data Compression Conf. (DCC), Snowbird, pp. 172–181, Mar. 2019.
Paper manuscript,
paper,
web page.
C. R. Helmrich, C. Rudat, T. Nguyen, H. Schwarz, D. Marpe, and T. Wiegand, «CE7-related: Joint Chroma Residual Coding with Multiple Modes»,
document JVET-N0282, Geneva, Mar. 2019.
Zip file.
C. R. Helmrich, H. Schwarz, T. Nguyen, C. Rudat, D. Marpe, and T. Wiegand, «CE7: Joint Chroma Residual Coding with Multiple Modes (Tests CE7-2.1, CE7-2.2)»,
document JVET-O0105, Gothenburg, July 2019.
Zip file.
C. R. Helmrich, H. Schwarz, T. Nguyen, C. Rudat, D. Marpe, and T. Wiegand, «CE7-related: Alternative Configuration for Joint Chroma Residual Coding»,
document JVET-O0543, Gothenburg, July 2019.
Zip file.
J. Erfurt, C. R. Helmrich, S. Bosse, H. Schwarz, D. Marpe, and T. Wiegand, «A Study of the Perceptually Weighted Peak Signal-to-Noise Ratio (WPSNR) for Image Compression»,
in Proc. IEEE International Conf. Image Processing (ICIP), Taipei, pp. 2339–2343, Sep. 2019.
Paper manuscript,
paper,
web page.
S. Bosse, M. Dietzel, S. Becker, C. Helmrich, M. Siekmann, H. Schwarz, D. Marpe, and T. Wiegand, «Neural Network Guided Perceptually Optimized Bit-Allocation for Block-Based Image and Video Compression»,
in Proc. IEEE Int. Conf. Image Processing (ICIP), Taipei, pp. 126–130, Sep. 2019.
Paper.
C. Rudat, C. R. Helmrich, J. Lainema, T. Nguyen, H. Schwarz, D. Marpe, and T. Wiegand, «Inter-Component Transform for Color Video Coding»,
in Proc. IEEE Picture Coding Symposium (PCS), Ningbo, Nov. 2019.
Paper manuscript.
J. Pfaff, H. Schwarz, D. Marpe, B. Bross, S. De-Luxán-Hernández, P. Helle, C. R. Helmrich, T. Hinz, W.-Q. Lim, J. Ma, T. Nguyen, J. Rasch, M. Schäfer, M. Siekmann, G. Venugopal, A. Wieckowski, M. Winken, and T. Wiegand,
«Video Compression Using Generalized Binary Partitioning, Trellis Coded Quantization, Perceptually Optimized Encoding, and Advanced Prediction and Transform Coding»,
to appear in IEEE Trans. Circuits & Systems for Video Technology, vol. 29, no. 12, Dec. 2019.
Article manuscript (with different title),
article.
2018
C. R. Helmrich, H. Schwarz, D. Marpe, and T. Wiegand, «Improved Perceptually Optimized QP Adaptation and Associated Distortion Measure»,
document JVET-K0206, Ljubljana, July 2018.
Zip file.
C. R. Helmrich, S. Bosse, P. Keydel, H. Schwarz, D. Marpe, and T. Wiegand, «A Spectrally Adaptive Noise Filling Tool for Perceptual Transform Coding of Still Images»,
in Proc. IEEE Int. Conf. Consumer Electron. (ICCE), Berlin, Sep. 2018.
Paper manuscript,
paper,
web page.
C. R. Helmrich and B. Bross, «Very Strong Deblocking Filtering with Conditional Activation Signaling»,
document JVET-L0523, Macau, Oct. 2018.
Zip file.
2017
C. R. Helmrich, Efficient Perceptual Audio Coding Using Cosine and Sine Modulated Lapped Transforms,
Dr.-Ing. dissertation, Friedrich-Alexander-Universität Erlangen-Nürnberg, May 2017.
Third edition (Nov. 2017).
S. Bosse, C. R. Helmrich, H. Schwarz, D. Marpe, and T. Wiegand, «Perceptually Optimized QP Adaptation and Associated Distortion Measure»,
document JVET-H0047, Macau, Oct. 2017.
Zip file (Dec. 2017).
2016
C. R. Helmrich and B. Edler, «Signal-Adaptive Switching of Overlap Ratio in Audio Transform Coding»,
in Proc. IEEE Int. Conf. Acoustics, Speech, and Signal Processing (ICASSP), Shanghai, pp. 639–643, Mar. 2016.
Paper.
C. R. Helmrich and B. Edler, «Audio Coding Using Overlap and Kernel Adaptation»,
IEEE Signal Processing Letters, vol. 23, no. 5, pp. 590–594, May 2016.
Article manuscript,
article.
C. R. Helmrich, R. Füg, and B. Edler, «Frequency-Domain Prediction for Audio Coding»,
submitted to IEEE Signal Processing Letters, Aug. 2016.
Article manuscript.
F. Schuh, S. Dick, R. Füg, C. R. Helmrich, N. Rettelbach, and T. Schwegler, «Efficient Multichannel Audio Transform Coding with Low Delay and Complexity»,
in Proc. AES 141st Convention, Los Angeles, preprint 9660, Oct. 2016.
Paper.
S. Disch, A. Niedermeier, C. R. Helmrich, C. Neukam, K. Schmidt, R. Geiger, J. Lecomte, F. Ghido, F. Nagel, and B. Edler, «Intelligent Gap Filling in Perceptual Transform Coding of Audio»,
in Proc. AES 141st Convention, Los Angeles, preprint 9661, Oct. 2016.
Paper.
2015
C. Helmrich, A. Niedermeier, S. Disch, and F. Ghido, «Spectral Envelope Reconstruction via IGF for Audio Transform Coding»,
in Proc. IEEE ICASSP, Brisbane, pp. 389–393, Apr. 2015.
Paper.
T. Bäckström and C. R. Helmrich, «Arithmetic Coding of Speech and Audio Spectra Using TCX Based on Linear Predictive Spectral Envelopes»,
in Proc. IEEE ICASSP, Brisbane, pp. 5127–5131, Apr. 2015.
Paper.
G. Fuchs, C. R. Helmrich, G. Marković, M. Neusinger, E. Ravelli, and T. Moriya, «Low Delay LPC and MDCT-Based Audio Coding in the EVS Codec»,
in Proc. IEEE ICASSP, Brisbane, pp. 5723–5727, Apr. 2015.
Paper.
E. Ravelli, C. R. Helmrich, G. Fuchs, and M. Multrus, «Low-Complexity and Robust Coding Mode Decision in the EVS Coder»,
in Proc. IEEE ICASSP, Brisbane, pp. 5888–5892, Apr. 2015.
Paper.
T. Moriya, Y. Kamamoto, N. Harada, T. Bäckström, C. R. Helmrich, and G. Fuchs, «Harmonic Model for MDCT Based Audio Coding with LPC Envelope»,
in Proc. EURASIP 23rd EUSIPCO, Nice, pp. 794–798, Sep. 2015.
Paper.
C. R. Helmrich, A. Niedermeier, S. Bayer, and B. Edler, «Low-Complexity Semi-Parametric Joint-Stereo Audio Transform Coding»,
in Proc. EURASIP 23rd EUSIPCO, Nice, pp. 799–803, Sep. 2015.
Paper.
C. R. Helmrich and B. Edler, «Signal-Adaptive Transform Kernel Switching for Stereo Audio Coding»,
in Proc. IEEE Workshop on Applic. of Signal Processing to Audio and Acoustics (WASPAA), New Paltz, pp. 1–5, Oct. 2015.
Paper.
C. R. Helmrich and M. Fischer, «Low-Delay Transform Coding Using the MPEG-H Audio Codec»,
in Proc. AES 139th Convention, New York, preprint 9355, Oct. 2015.
Paper.
2014
C. R. Helmrich, G. Marković, and B. Edler, «Improved Low-Delay MDCT-Based Coding of Both Stationary and Transient Audio Signals»,
in Proc. IEEE ICASSP, Florence, Italy, pp. 6954–6958, May 2014.
Paper.
2013
M. Neuendorf, M. Multrus, N. Rettelbach, G. Fuchs, J. Robilliard, J. Lecomte, S. Wilde, S. Bayer, S. Disch, C. R.
Helmrich, R. Lefebvre, P. Gournay, B. Bessette, J. Lapierre, K. Kjörling, H. Purnhagen, L. Villemoes, W. Oomen, E.
Schuijers, K. Kikuiri, T. Chinen, T. Norimatsu, K.-S. Chong, E. Oh, M. Kim, S. Quackenbush, and B. Grill, «The
ISO/MPEG Unified Speech and Audio Coding Standard—Consistent High Quality for All Content Types and at All Bitrates»,
Journal of the AES, vol. 61, no. 12, pp. 956–977, Dec. 2013.
Article manuscript (hosted by P. Gournay),
article.
2012
M. Neuendorf, M. Multrus, N. Rettelbach, G. Fuchs, J. Robilliard, J. Lecomte, S. Wilde, S. Bayer, S. Disch, C. R.
Helmrich, R. Lefebvre, P. Gournay, B. Bessette, J. Lapierre, K. Kjörling, H. Purnhagen, L. Villemoes, W. Oomen, E.
Schuijers, K. Kikuiri, T. Chinen, T. Norimatsu, K.-S. Chong, E. Oh, M. Kim, S. Quackenbush, and B. Grill, «MPEG
Unified Speech and Audio Coding—The ISO/MPEG Standard for High-Efficiency Audio Coding of All Content Types»,
in Proc. AES 132nd Convention, Budapest, preprint 8654, Apr. 2012.
Paper.
2011
C. R. Helmrich, P. Carlsson, S. Disch, B. Edler, J. Hilpert, M. Neusinger, H. Purnhagen, N. Rettelbach, J. Robilliard, and
L. Villemoes, «Efficient Transform Coding of Two-Channel Audio Signals by Means of Complex-Valued Stereo Prediction»,
in Proc. IEEE ICASSP, Prague, pp. 497–500, May 2011.
Paper.
2010
C. R. Helmrich, «On the Use of Sums of Sines in the Design of Signal Windows»,
in Proc. DAFx-10, Graz, poster session 8, Sep. 2010.
Paper.
2008
M. Holters, C. R. Helmrich, and U. Zölzer, «Delay-Free Audio Coding Based on ADPCM and Error Feedback»,
in Proc. DAFx-08, Espoo, paper session 2d, Sep. 2008.
Paper.
2007
C. R. Helmrich, M. Holters, and U. Zölzer, «Improved Psychoacoustic Noise Shaping for Requantization of High-Resolution Digital Audio»,
in Proc. AES 31st Int. Conf., London, June 2007.
Paper.
|
|