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Guhathakurta, Jajnabalkya

Jajnabalkya Guhathakurta

M.Sc.

Research Assistant
ITI
Computational Imaging Systems

Contact

+49 711 685 88349
+49 711 685 88250
Email

Universitätsstraße 38
70569 Stuttgart
Deutschland
Room: 2.252

Office Hours

on appointment

Publications

2022
1. Hinter den Kulissen. Martin Rettinger; Jajnabalkya Guhathakurta; Peter Gänz; Sven Simon and Mike Schlaich. Beton- und Stahlbetonbau 117, (April 2022), pp. . DOI: https://doi.org/10.1002/best.202200008
  - BibTeX
  - DOI
  BibTeX
  @article{article, abteilung = {cis}, author = {Rettinger, Martin and Guhathakurta, Jajnabalkya and Gänz, Peter and Simon, Sven and Schlaich, Mike}, doi = {10.1002/best.202200008}, journal = {Beton- und Stahlbetonbau}, month = {04}, title = {Hinter den Kulissen}, volume = 117, year = 2022 }
  DOI
  10.1002/best.202200008
2. FL-MISR: fast large-scale multi-image super-resolution for computed tomography based on multi-GPU acceleration. Kaicong Sun; Trung-Hieu Tran; Jajnabalkya Guhathakurta and Sven Simon. Journal of Real-Time Image Processing 19, (2022), pp. 331–344. DOI: https://doi.org/10.1007/s00138-014-0623-4
  - BibTeX
  - DOI
  BibTeX
  @article{sun2022fl, abteilung = {cis}, author = {Sun, Kaicong and Tran, Trung-Hieu and Guhathakurta, Jajnabalkya and Simon, Sven}, doi = {10.1007/s00138-014-0623-4}, journal = {Journal of Real-Time Image Processing}, number = 2, pages = {331--344}, publisher = {Springer}, title = {FL-MISR: fast large-scale multi-image super-resolution for computed tomography based on multi-GPU acceleration}, volume = 19, year = 2022 }
  DOI
  10.1007/s00138-014-0623-4
3. Beneath the Surface - Computed Tomography for Precast Segmental Bridges. M. Rettinger; J. Guhathakurta; P. Ganz; S. Simon and M. Schlaich. Beton- und Stahlbetonbau 117, (2022).
  - BibTeX
  BibTeX
  @article{rggss22, abteilung = {cis}, author = {Rettinger, M. and Guhathakurta, J. and Ganz, P. and Simon, S. and Schlaich, M.}, journal = {Beton- und Stahlbetonbau}, number = 2, title = {Beneath the Surface - Computed Tomography for Precast Segmental Bridges}, unidentified = {14}, volume = 117, year = 2022 }
2021
1. Investigation of the Influence of Transport Processes on Chemical Reactions in Bubbly Flows Using Space-Resolved In Situ Analytics and Simultaneous Characterization of Bubble Dynamics in Real-Time, Reactive Bubbly Flows. J. Guhathakurta; D. Schurr; G. Rinke; D. Grottke; Kraut M.; R. Dittmeyer and S. Simon. Springer (2021), pp. 163–196.
  - BibTeX
  BibTeX
  @article{gsrgmds21, abteilung = {cis}, author = {Guhathakurta, J. and Schurr, D. and Rinke, G. and Grottke, D. and M., Kraut and Dittmeyer, R. and Simon, S.}, comment = {ISBN 978-3-030-72360-6}, journal = {Springer}, pages = {163-196}, privnote = {ISBN 978-3-030-72360-6}, title = {Investigation of the Influence of Transport Processes on Chemical Reactions in Bubbly Flows Using Space-Resolved In Situ Analytics and Simultaneous Characterization of Bubble Dynamics in Real-Time, Reactive Bubbly Flows}, year = 2021 }
2. Investigation of the Influence of Transport Processes on Chemical Reactions in Bubbly Flows Using Space-Resolved In Situ Analytics and Simultaneous Characterization of Bubble Dynamics in Real-Time. Jajnabalkya Guhathakurta; Daniela Schurr; Günter Rinke; Daniel Grottke; Manfred Kraut; Roland Dittmeyer and Sven Simon. In Reactive Bubbly Flows: Final Report of the DFG Priority Program 1740, Michael Schlüter; Dieter Bothe; Sonja Herres-Pawlis and Ulrich Nieken (eds.). Springer International Publishing, Cham, 2021, pp. 163–196. DOI: https://doi.org/10.1007/978-3-030-72361-3_9
  Abstract
  For investigations of concentration profiles around bubbles in millichannels as Taylor flow and in bubble columns two in situ real-time process analysis systems were developed. The first system uses laser Raman spectroscopy combined with real-time digital holography. The Raman part of the system is based on a custom pulsed high-energy laser. With this process analysis system, it is possible to measure concentrations of many chemical compounds selectively, with a spatial resolution in the micrometer range during a 10 µs laser pulse. Due to the two combined principles, the determination of the position of a measured local concentration relative to the gas bubble is possible and has been demonstrated. The second real-time process analysis system is especially suited for colored chemical reactions. The system is based on real-time UV/VIS 2D tomography such that with time the third dimension of a 3D concentration profile in the bubble wake can be determined. It consists of fast line sensors illuminated by a laser light sheet. This light sheet originates from a laser spot moving around one third of the bubble column repeatedly. This system is applicable to freely ascending single bubbles as well as bubbly flows in bubble columns.
  BibTeX
  @inbook{Guhathakurta2021, abstract = {For investigations of concentration profiles around bubbles in millichannels as Taylor flow and in bubble columns two in situ real-time process analysis systems were developed. The first system uses laser Raman spectroscopy combined with real-time digital holography. The Raman part of the system is based on a custom pulsed high-energy laser. With this process analysis system, it is possible to measure concentrations of many chemical compounds selectively, with a spatial resolution in the micrometer range during a 10 {\textmu}s laser pulse. Due to the two combined principles, the determination of the position of a measured local concentration relative to the gas bubble is possible and has been demonstrated. The second real-time process analysis system is especially suited for colored chemical reactions. The system is based on real-time UV/VIS 2D tomography such that with time the third dimension of a 3D concentration profile in the bubble wake can be determined. It consists of fast line sensors illuminated by a laser light sheet. This light sheet originates from a laser spot moving around one third of the bubble column repeatedly. This system is applicable to freely ascending single bubbles as well as bubbly flows in bubble columns.}, abteilung = {cis}, address = {Cham}, author = {Guhathakurta, Jajnabalkya and Schurr, Daniela and Rinke, G{\"u}nter and Grottke, Daniel and Kraut, Manfred and Dittmeyer, Roland and Simon, Sven}, booktitle = {Reactive Bubbly Flows: Final Report of the DFG Priority Program 1740}, doi = {10.1007/978-3-030-72361-3_9}, editor = {Schl{\"u}ter, Michael and Bothe, Dieter and Herres-Pawlis, Sonja and Nieken, Ulrich}, isbn = {978-3-030-72361-3}, pages = {163--196}, publisher = {Springer International Publishing}, title = {Investigation of the Influence of Transport Processes on Chemical Reactions in Bubbly Flows Using Space-Resolved In Situ Analytics and Simultaneous Characterization of Bubble Dynamics in Real-Time}, url = {https://doi.org/10.1007/978-3-030-72361-3_9}, year = 2021 }
  Link
  https://doi.org/10.1007/978-3-030-72361-3_9
  DOI
  10.1007/978-3-030-72361-3_9
2019
1. Architecture for parallel marker-free variable length streams decoding. Yousef Baroud; José Manuel Mariños Velarde; Zhe Wang; Steffen Kieß; Seyyed Mahdi Najmabadi; Jajnabalkya Guhathakurta and Sven Simon. Journal of Real-Time Image Processing 16, (December 2019), pp. 2127–2146. DOI: https://doi.org/10.1007/s11554-017-0715-2
  Abstract
  Due to throughput requirements above 1 gigapixel/sec for the real-time compression of modern image and video data streams, parallelism for encoding and decoding is inevitable. To achieve parallel decoding, a well-established technique is to insert markers into the variable length code (VLC) stream. By locating markers, it is then possible to extract the sub-streams that are, in turn, decoded in parallel. The use of markers adversely affects compression especially when a high degree of parallelism is required. In this paper, we propose an architecture of a marker-free parallel decoding approach of VLC streams. Instead of multiple local entropy decoders, the proposed architecture is based on using a single parallel entropy decoder in conjunction with a novel format to construct the VLC stream. The approach runs at high clock rates supporting parallelism to a high number of decoders. A synthesized clock frequency well above 110 MHz is achieved for up to 20 decoders on a medium-sized FPGA.
  BibTeX
  @article{Baroud2019, abstract = {Due to throughput requirements above 1 gigapixel/sec for the real-time compression of modern image and video data streams, parallelism for encoding and decoding is inevitable. To achieve parallel decoding, a well-established technique is to insert markers into the variable length code (VLC) stream. By locating markers, it is then possible to extract the sub-streams that are, in turn, decoded in parallel. The use of markers adversely affects compression especially when a high degree of parallelism is required. In this paper, we propose an architecture of a marker-free parallel decoding approach of VLC streams. Instead of multiple local entropy decoders, the proposed architecture is based on using a single parallel entropy decoder in conjunction with a novel format to construct the VLC stream. The approach runs at high clock rates supporting parallelism to a high number of decoders. A synthesized clock frequency well above 110 MHz is achieved for up to 20 decoders on a medium-sized FPGA.}, abteilung = {cis}, author = {Baroud, Yousef and Mari{\~{n}}os Velarde, Jos{\'e} Manuel and Wang, Zhe and Kie{\ss}, Steffen and Najmabadi, Seyyed Mahdi and Guhathakurta, Jajnabalkya and Simon, Sven}, day = 01, doi = {10.1007/s11554-017-0715-2}, issn = {1861-8219}, journal = {Journal of Real-Time Image Processing}, month = {12}, number = 6, pages = {2127-2146}, title = {Architecture for parallel marker-free variable length streams decoding}, url = {https://doi.org/10.1007/s11554-017-0715-2}, volume = 16, year = 2019 }
  Link
  https://doi.org/10.1007/s11554-017-0715-2
  DOI
  10.1007/s11554-017-0715-2
2017
1. Simultaneous In Situ Characterisation of Bubble Dynamics and a Spatially Resolved Concentration Profile: A Combined Mach--Zehnder Holography and Confocal Raman-Spectroscopy Sensor System. J. Guhathakurta; D. Schurr; G. Rinke; R. Dittmeyer and S. Simon. Journal of Sensors and Sensor Systems 6, (2017), pp. 223–236.
  - BibTeX
  BibTeX
  @article{gsrds17, abteilung = {cis}, author = {Guhathakurta, J. and Schurr, D. and Rinke, G. and Dittmeyer, R. and Simon, S.}, journal = {Journal of Sensors and Sensor Systems}, number = 1, pages = {223-236}, title = {Simultaneous In Situ Characterisation of Bubble Dynamics and a Spatially Resolved Concentration Profile: A Combined Mach--Zehnder Holography and Confocal Raman-Spectroscopy Sensor System}, volume = 6, year = 2017 }
2. Characterization of a Raman Spectroscopic and Holographic System for Gas-Liquid Flows in Microchannels. D. Schurr; J. Guhathakurta; S. Simon; G. Rinke and R. Dittmeyer. Chemical Engineering & Technology 40, (2017), pp. 1400–1407.
  - BibTeX
  BibTeX
  @article{sgsrd17, abteilung = {cis}, author = {Schurr, D. and Guhathakurta, J. and Simon, S. and Rinke, G. and Dittmeyer, R.}, journal = {Chemical Engineering & Technology}, number = 8, pages = {1400-1407}, title = {Characterization of a Raman Spectroscopic and Holographic System for Gas-Liquid Flows in Microchannels}, volume = 40, year = 2017 }
3. Architecture for parallel marker-free variable length streams decoding. Y. Baroud; J. M. M. Velarde; Z. Wang; S. Kieß; M. Najmabadi; J. Guhathakurta and S. Simon. Journal of Real-Time Image Processing (2017), pp. 1–20.
  - BibTeX
  BibTeX
  @article{bvwkngs17, abteilung = {cis}, author = {Baroud, Y. and Velarde, J. M. M. and Wang, Z. and Kie{\ss}, S. and Najmabadi, M. and Guhathakurta, J. and Simon, S.}, journal = {Journal of Real-Time Image Processing}, pages = {1-20}, title = {Architecture for parallel marker-free variable length streams decoding}, year = 2017 }
4. Analyzing the effect and Performance of Lossy Compression on Aeroacoustic Simulation of Gas Injector. M. Najmabadi; P. Offenhäuser; M. Hamann; J. Guhathakurta; F. Hempert; C. Glass and S. Simon. Journal Computation 5, (2017), pp. 24.
  - BibTeX
  BibTeX
  @article{nohghgs17, abteilung = {cis}, author = {Najmabadi, M. and Offenh{"a}user, P. and Hamann, M. and Guhathakurta, J. and Hempert, F. and Glass, C. and Simon, S.}, journal = {Journal Computation}, number = 2, pages = 24, title = {Analyzing the effect and Performance of Lossy Compression on Aeroacoustic Simulation of Gas Injector}, volume = 5, year = 2017 }
2016
1. position measurement of spherical objects with a holographic single camera setup. J. Guhathakurta; D. Schurr; R. Rinke and 3d S. Simon: FERMAT-DFG SPP1740 (June 2016), pp. 6–8.
  - BibTeX
  BibTeX
  @article{gsrs16, abteilung = {cis}, author = {Guhathakurta, J. and Schurr, D. and Rinke, R. and S. Simon:, 3d}, journal = {FERMAT-DFG SPP1740}, month = {06}, pages = {6-8}, title = {position measurement of spherical objects with a holographic single camera setup}, unidentified = {Symposium "Non-Invasive Measuring Tools and Numerical Methods for the Investigation of Non-Reactive and Reactive Gas-Liquid Flows", Toulouse, France}, year = 2016 }
2. Accuracy of 3D position measurement of spherical objects with a holographic single camera setup. J. Guhathakurta; W. Li and S. Simon. N“urnberg, Germany, 2016, pp. 431–437.
  - BibTeX
  BibTeX
  @inproceedings{gls16, abteilung = {cis}, address = {N{“u}rnberg, Germany}, author = {Guhathakurta, J. and Li, W. and Simon, S.}, day = {10-11}, month = {05}, pages = {431-437}, publisher = {Proceedings of the 18. GMA/ITG-Fachtagung Sensoren und Messsysteme 2016}, title = {Accuracy of 3D position measurement of spherical objects with a holographic single camera setup}, year = 2016 }
3. Local concentration measurements in the wake of bubbles based on in-situ Raman spectroscopy and statistical analysis. D. Schurr; J. Guhathakurta; Y. Baroud; S. Simon; G. Rinke and R. Dittmeyer. In 9th International Conference on Multiphase Flow (ICMF 2016), Full Paper, Florence , Italy, 2016, pp. 22–27.
  - BibTeX
  BibTeX
  @inproceedings{sgbsrd16, abteilung = {cis}, address = {Florence , Italy}, author = {Schurr, D. and Guhathakurta, J. and Baroud, Y. and Simon, S. and Rinke, G. and Dittmeyer, R.}, booktitle = {9th International Conference on Multiphase Flow (ICMF 2016), Full Paper}, month = {05}, pages = {22-27}, title = {Local concentration measurements in the wake of bubbles based on in-situ Raman spectroscopy and statistical analysis}, year = 2016 }
2015
1. A High-Speed Process Monitoring System to Detect and Analyze Filaments and Droplet Collisions in Spray Processes in Real Time. M. Klaiber; S. Simon; J. Guhathakurta; W. Li; Z. Wang; A. Lampa and U. Fritsching. 13th Triennial Internat Conf. on Liquid Atomization and Spray Systems, Taiwan, ICLASS (2015), pp. 1–6.
  - BibTeX
  BibTeX
  @article{ksglwlfh15, abteilung = {cis}, author = {Klaiber, M. and Simon, S. and Guhathakurta, J. and Li, W. and Wang, Z. and Lampa, A. and Fritsching, U.}, journal = {13th Triennial Internat Conf. on Liquid Atomization and Spray Systems, Taiwan, ICLASS}, pages = {1-6}, title = {A High-Speed Process Monitoring System to Detect and Analyze Filaments and Droplet Collisions in Spray Processes in Real Time}, year = 2015 }
2. Signal Integrity Model Extraction Based on Computed Tomography Scans—Analysis of the Required Voxel Resolution. Jürgen Hillebrand; Steffen Kieß; Jajnabalkya Guhathakurta and Sven Simon. IEEE Transactions on Electromagnetic Compatibility 57, (2015), pp. 847–857. DOI: https://doi.org/10.1109/TEMC.2015.2435995
  - BibTeX
  - DOI
  BibTeX
  @article{7120954, abteilung = {cis}, author = {Hillebrand, Jürgen and Kieß, Steffen and Guhathakurta, Jajnabalkya and Simon, Sven}, doi = {10.1109/TEMC.2015.2435995}, journal = {IEEE Transactions on Electromagnetic Compatibility}, number = 4, pages = {847-857}, title = {Signal Integrity Model Extraction Based on Computed Tomography Scans—Analysis of the Required Voxel Resolution}, volume = 57, year = 2015 }
  DOI
  10.1109/TEMC.2015.2435995
3. ’Computed Tomography Resolution Enhancement by Integrating High-Resolution 2D X-Ray Images into the CT reconstruction. S. Kieß; J. Guhathakurta; J. Hillebrand and S. Simon et al.: 2015, pp. 1–9.
  - BibTeX
  BibTeX
  @inproceedings{kghs15, abteilung = {cis}, author = {Kie{\ss}, S. and Guhathakurta, J. and Hillebrand, J. and et al.:, S. Simon}, pages = {1-9}, publisher = {Intern. Symposium on Digital Industrial Radiology and Computed Tomography}, title = {'Computed Tomography Resolution Enhancement by Integrating High-Resolution 2D X-Ray Images into the CT reconstruction}, year = 2015 }

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