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Christian Helmrich

Short name: C. Helmrich

christian.helmrich@hhi.fraunhofer.de Fraunhofer HHI 46 document(s)
Affiliations
Fraunhofer HHI 2018-04-10 - 2026-07-15 HHI 2018-07-11 - 2023-07-19 Qualcomm 2019-07-03 - 2019-07-12
Known Emails
Documents
JVET-AE0266
31st Meeting: Geneva, CH, July 2023 2023-07-17 14:23
Update on open, optimized VVC implementations VVenC and VVdeC

A. Wieckowski, J. Brandenburg, C. Bartnik, V. George, J. Güther, G. Hege, C. Helmrich, A. Henkel, T. Hinz, C. Lehmann, C. Stoffers, B. Bross, H. Schwarz, D. Marpe, T. Schierl (HHI)

JVET-AD0266
30th Meeting: Antalya, TR, April 2023 2023-04-26 11:54
Update on open, optimized VVC implementations VVenC and VVdeC

A. Wieckowski, J. Brandenburg, C. Bartnik, V. George, J. Güther, G. Hege, C. Helmrich, A. Henkel, T. Hinz, C. Lehmann, C. Stoffers, B. Bross, H. Schwarz, D. Marpe, T. Schierl (HHI)

JVET-AC0266
29th Meeting: by teleconference, DE, January 2023 2023-01-19 14:28
Update on open, optimized VVC implementations VVenC and VVdeC

A. Wieckowski, J. Brandenburg, C. Bartnik, V. George, J. Güther, G. Hege, C. Helmrich, A. Henkel, T. Hinz, C. Lehmann, C. Stoffers, B. Bross, H. Schwarz, D. Marpe, T. Schierl (HHI)

JVET-AB0044
28th Meeting: Mainz, DE, October 2022 2022-10-21 19:08
Update on open, optimized VVC implementations VVenC and VVdeC

A. Wieckowski, J. Brandenburg, C. Bartnik, V. George, J. Güther, G. Hege, C. Helmrich, A. Henkel, T. Hinz, C. Lehmann, C. Stoffers, B. Bross, H. Schwarz, D. Marpe, T. Schierl (HHI)

JVET-AA0154
27th Meeting: by teleconference, July 2022 2022-07-18 12:12
Update on Open optimized VVC Implementations VVenC and VVdeC

A. Wieckowski, J. Brandenburg, C. Bartnik, V. George, J. Güther, G. Hege, C. Helmrich, A. Henkel, T. Hinz, C. Lehmann, C. Stoffers, B. Bross, H. Schwarz, D. Marpe, T. Schierl (HHI)

JVET-Z0247
26th Meeting: by teleconference, April 2022 2022-04-28 12:00
Crosscheck of JVET-Z0072 (AHG10/AHG12: Enhanced reference picture structures for ECM and VTM)

C. Helmrich, C. Bartnik (Fraunhofer HHI)

JVET-Y0136
25th Meeting: by teleconference, January 2022 2022-01-19 20:26
Update on open, optimized VVC implementations VVenC and VVdeC

A. Wieckowski, J. Brandenburg, C. Bartnik, V. George, J. Güther, G. Hege, C. Helmrich, A. Henkel, T. Hinz, C. Lehmann, C. Stoffers, I. Zupancic, B. Bross, H. Schwarz, D. Marpe, T. Schierl (HHI)

JVET-X0044
25th Meeting: by teleconference, October 2021 2021-10-11 11:18
Update on open, optimized VVC implementations VVenC and VVdeC

A. Wieckowski, J. Brandenburg, C. Bartnik, V. George, J. Güther, G. Hege, C. Helmrich, A. Henkel, T. Hinz, C. Lehmann, C. Stoffers, I. Zupancic, B. Bross, H. Schwarz, D. Marpe, T. Schierl (HHI)

JVET-W0184
23rd Meeting: by teleconference, July 2021 2021-09-10 11:34
Update on open, optimized VVC implementations VVenC and VVdeC

A. Wieckowski, J. Brandenburg, C. Bartnik, V. George, J. Güther, G. Hege, C. Helmrich, A. Henkel, T. Hinz, C. Lehmann, C. Stoffers, I. Zupancic, B. Bross, H. Schwarz, D. Marpe, T. Schierl (HHI)

JVET-W0147
23rd Meeting: by teleconference, July 2021 2021-07-12 13:46
Crosscheck of JVET-W0043: AHG 10: Alignment of smooth QP control with adaptive QP in VTM

I. Zupancic, C. Helmrich (HHI)

JVET-W0150
23rd Meeting: by teleconference, July 2021 2021-07-06 21:07
Information on and analysis of the VVC encoders in the SDR HD RA verification test

C. Helmrich, B. Bross, J. Pfaff, H. Schwarz, D. Marpe, T. Wiegand (HHI)

JVET-U0135
21st Meeting: by teleconference, January 2021 2021-01-12 07:27
Update on open, optimized VVC implementations VVenC and VVdeC

A. Wieckowski, J. Brandenburg, C. Bartnik, V. George, J. Güther, G. Hege, C. Helmrich, A. Henkel, T. Hinz, C. Lehmann, C. Stoffers, I. Zupancic, B. Bross, H. Schwarz, D. Marpe (HHI)

JVET-T0099
20th Meeting: by teleconference, October 2020 2020-10-13 23:42
Open optimized VVC encoder (VVenC) and decoder (VVdeC) implementations

A. Wieckowski, J. Brandenburg, C. Bartnik, V. George, J. Güther, G. Hege, C. Helmrich, A. Henkel, T. Hinz, C. Lehmann, C. Stoffers, I. Zupancic, B. Bross, H. Schwarz, D. Marpe (HHI)

JVET-T0103
20th Meeting: by teleconference, October 2020 2020-10-08 21:40
Information on and analysis of the VVC encoders in the SDR UHD verification test

C. Helmrich, B. Bross, J. Pfaff, H. Schwarz, D. Marpe, T. Wiegand (HHI)

JVET-S0262
19th Meeting: by teleconference, June 2020 2020-06-27 19:46
Crosscheck of JVET-S0180 (Addition of a GOP hierarchy of 32 for random access configuration for VTM)

C. Helmrich (HHI)

JVET-S0015
19th Meeting: by teleconference, June 2020 2020-06-22 15:35
JVET AHG report: Quantization control (AHG15)

R. Chernyak, E. François, C. Helmrich, S. McCarthy, A. Segall

JVET-R0015
18th Meeting: Teleconference, April 2020 2020-04-17 10:01
JVET AHG report: Quantization control (AHG15)

R. Chernyak, E. François, C. Helmrich, S. McCarthy, A. Segall

JVET-Q0750
17th Meeting: Brussels, January 2020 2020-01-10 21:02
Crosscheck of JVET-Q0695 (Combined encoder improvements of JVET-Q0101/JVET-Q0408/JVET-Q0514 on JCCR with chroma transform skip)

C. Helmrich, H. Schwarz (HHI)

JVET-Q0434
17th Meeting: Brussels, January 2020 2020-01-10 16:00
Pre-Sample Adaptive Offset Filter

W. Lim, C. Helmrich, J. Erfurt, H. Schwarz, D. Marpe, T. Wiegand (HHI)

JVET-Q0015
17th Meeting: Brussels, January 2020 2020-01-08 14:58
JVET AHG report: Quantization control (AHG15)

R. Chernyak, E. François, C. Helmrich, S. McCarthy, A. Segall

JVET-P0015
16th Meeting: Geneva, October 2019 2019-10-03 12:50
JVET AHG report: Quantization control (AHG15)

R. Chernyak, E. François, C. Helmrich, S. McCarthy, A. Segall

JVET-O0095
15th Meeting: Gothenburg, SE, July 2019 2019-07-08 14:31
CE3-3.2: Simplified and robust CCLM parameter derivation

A. Filippov, V. Rufitskiy, E. Alshina (Huawei), C. Helmrich, H. Schwarz, D. Marpe, T. Wiegand (HHI)

JVET-O0015
15th Meeting: Gothenburg, SE, July 2019 2019-07-03 11:51
JVET AHG report: Quantization control (AHG15)

R. Chernyak, E. François, C. Helmrich, S. McCarthy, A. Segall

JVET-O0010
15th Meeting: Gothenburg, SE, July 2019 2019-07-03 11:24
JVET AHG report: Encoding algorithm optimizations (AHG10)

A. Duenas, A. M. Tourapis, C. Helmrich, S. Ikonin, A. Norkin, R. Sjöberg

JVET-O0935
15th Meeting: Gothenburg, SE, July 2019 2019-07-02 18:18
CE7-related: Alternative configuration of CE7-2.2 joint chroma residual coding

C. Helmrich, H. Schwarz, T. Nguyen, C. Rudat, D. Marpe, T. Wiegand (Fraunhofer HHI, B. Ray, G. Van der Auwera, A. K. Ramasubramonian, M. Coban, M. Karczewicz (Qualcomm)

JVET-O0543
15th Meeting: Gothenburg, SE, July 2019 2019-06-28 15:06
CE7-related: Alternative configuration for joint chroma residual coding

C. Helmrich, H. Schwarz, T. Nguyen, C. Rudat, D. Marpe, T. Wiegand (Fraunhofer HHI)

JVET-O0105
15th Meeting: Gothenburg, SE, July 2019 2019-06-21 17:27
CE7: Joint chroma residual coding with multiple modes (tests CE7-2.1, CE7-2.2)

C. Helmrich, H. Schwarz, T. Nguyen, C. Rudat, D. Marpe, T. Wiegand (Fraunhofer HHI), B. Ray, G. Van der Auwera, A. K. Ramasubramonian, M. Coban, M. Karczewicz (Qualcomm)

JVET-N0716
14th Meeting: Geneva, March 2019 2019-03-26 14:37
CE1-related: Simplified and robust LIC parameter derivation unified with CCLM

A. Filippov, V. Rufitskiy, J. Chen (Huawei), C. Helmrich, H. Schwarz, D. Marpe, T. Wiegand (HHI)

JVET-N0282
14th Meeting: Geneva, March 2019 2019-03-21 20:03
CE7-related: Joint chroma residual coding with multiple modes

C. Helmrich, C. Rudat, T. Nguyen, H. Schwarz, D. Marpe, T. Wiegand (HHI)

JVET-N0018
14th Meeting: Geneva, March 2019 2019-03-19 16:30
JVET AHG report: Quantization control (AHG18)

R. Chernyak, E. François, C. Helmrich, A. Segall

JVET-N0010
14th Meeting: Geneva, March 2019 2019-03-19 01:56
JVET AHG report: Encoding algorithm optimization (AHG10)

A. Duenas, A. Tourapis, C. Helmrich, S. Ikonin, A. Norkin, R. Sjöberg, T. Toma

JVET-N0595
14th Meeting: Geneva, March 2019 2019-03-18 13:05
CE11-1.1: Further information on conditionally signaled very strong deblocking

C. Helmrich (HHI)

JVET-M0010
13th Meeting: Marrakech, January 2019 2019-01-09 08:31
JVET AHG report: Encoding algorithm optimizations (AHG10)

A. M. Tourapis, A. Duenas, C. Helmrich, S. Ikonin, A. Norkin, R. Sjoberg

JVET-M0092
13th Meeting: Marrakech, January 2019 2019-01-02 23:47
CE11: Very strong deblocking with conditional activation signaling (Test 11.1.1)

C. Helmrich, B. Bross, H. Schwarz, D. Marpe, T. Wiegand (HHI)

JVET-M0091
13th Meeting: Marrakech, January 2019 2018-12-28 21:17
AHG10: Clean-up and finalization of perceptually optimized QP adaptation method in VTM

C. Helmrich, H. Schwarz, D. Marpe, T. Wiegand (HHI)

JVET-M0093
13th Meeting: Marrakech, January 2019 2018-12-28 13:32
Non-CE3: Improved robustness for calculation of cross-component linear model parameters

C. Helmrich, H. Schwarz, D. Marpe, T. Wiegand (HHI)

JVET-M0090
13th Meeting: Marrakech, January 2019 2018-12-28 13:21
On the use of chroma QP offsets in the VVC common test conditions

C. Helmrich, H. Schwarz, D. Marpe, T. Wiegand (HHI)

JVET-L0523
12th Meeting: Macao, October 2018 2018-10-07 14:12
CE11-related: Very strong deblocking filtering with conditional activation signaling

C. Helmrich, B. Bross (HHI)

JVET-L0181
12th Meeting: Macao, October 2018 2018-10-01 18:22
AHG10: Corrected operation of ALF encoding with perceptually optimized QP adaptation

C. Helmrich, B. Bross, J. Erfurt (HHI)

JVET-L0010
12th Meeting: Macao, October 2018 2018-10-01 10:37
JVET AHG report: Encoding algorithm optimizations (AHG10)

A. Duenas, A. M. Tourapis, C. Helmrich, S. Ikonin, A. Norkin, R. Sjoberg

JVET-L0210
12th Meeting: Macao, October 2018 2018-09-24 18:29
CE7: Adaptive quantization via perceptually optimized QP adaptation (Test 7.2.6)

C. Helmrich (HHI)

JVET-K0010
11th Meeting: Ljubljana, July 2018 2018-07-10 12:54
JVET AHG report: Encoding algorithm optimizations (AHG10)

R. Sjoberg, E. Alshina, C. Helmrich, S. Ikonin, A. Norkin

JVET-K0206
11th Meeting: Ljubljana, July 2018 2018-07-02 15:28
AHG10: Improved perceptually optimized QP adaptation and associated distortion measure

C. Helmrich, H. Schwarz, D. Marpe, T. Wiegand (HHI)

JVET-J0014
10th Meeting: San Diego, April 2018 2018-04-12 09:09
Description of SDR, HDR and 360° video coding technology proposal by Fraunhofer HHI

M. Albrecht, C. Bartnik, S. Bosse, J. Brandenburg, B. Bross, J. Erfurt, V. George, P. Haase, P. Helle, C. Helmrich, A. Henkel, T. Hinz, S. de Luxan Hernandez, S. Kaltenstadler, P. Keydel, H. Kirchhoffer, C. Lehmann, W.-Q. Lim, J. Ma, D. Maniry, D. Marpe, P. Merkle, T. Nguyen, J. Pfaff, J. Rasch, R. Rischke, C. Rudat, M. Schaefer, T. Schierl, H. Schwarz, M. Siekmann, R. Skupin, B. Stallenberger, J. Stegemann, K. Suehring, G. Tech, G. Venugopal, S. Walter, A. Wieckowski, T. Wiegand, M. Winken (Fraunhofer HHI)

JVET-AQ0267
43rd Meeting: Geneva, July 2026
Withdrawn

W. Ahmad, K. Andersson, L. Litwic, M. Pettersson, R. Sjöberg, N. Stegmaier, J. Ström, P. Wennersten (Ericsson), C. Bartnik, J. Brandenburg, B. Bross, V. George, J. Güther, G. Hege, C. Helmrich, A. Henkel, T. Hinz, C. Lehmann, D. Marpe, T. Nguyen, J. Pfaff, T. Schierl, H. Schwarz, B. Stallenberger, K. Sühring, A. Wieckowski, T. Wiegand (Fraunhofer HHI), P. Astola, S. Blasi, F. Cricri, D. Bugdayci Sansli, C. Feldmann, D. Fortin, J. Funnell, A. Hallapuro, M. M. Hannuksela, S. Hong, I. Jumakulyyev, J. Lainema, N. Le, N. Neumann, J. Ridge, D. Rusanovskyy, S. Schwarz, H. Zhang, N. Zou (Nokia)

JVET-AQ0194
43rd Meeting: Geneva, July 2026
AHG10/AHG12: Clean-Slate NextSoftware2 implementation without future Video Coding Tools

W. Ahmad, K. Andersson, L. Litwic, M. Pettersson, R. Sjöberg, N. Stegmaier, J. Ström, P. Wennersten (Ericsson), C. Bartnik, J. Brandenburg, B. Bross, V. George, J. Güther, G. Hege, C. Helmrich, A. Henkel, T. Hinz, C. Lehmann, D. Marpe, T. Nguyen, J. Pfaff, T. Schierl, H. Schwarz, B. Stallenberger, K. Sühring, A. Wieckowski, T. Wiegand (Fraunhofer HHI), P. Astola, S. Blasi, F. Cricri, D. Bugdayci Sansli, C. Feldmann, D. Fortin, J. Funnell, A. Hallapuro, M. M. Hannuksela, S. Hong, I. Jumakulyyev, J. Lainema, N. Le, N. Neumann, J. Ridge, D. Rusanovskyy, S. Schwarz, H. Zhang, N. Zou (Nokia)