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  1. Ansatte

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Christian Schellewald

Last ned pressefoto
Last ned pressefoto
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Christian Schellewald

Forsker / SINTEF Ocean
Institutt for teknisk kybernetikk

christian.schellewald@ntnu.no
92280980 Gløshaugen, SINTEF Sealab, Brattørkaia 17C
Om Publikasjoner Formidling

Om

I received my Ph.D. degree from the Department of Mathematics and Computer Science, University of Mannheim, Germany. Then I was a Marie Curie Postdoctoral Researcher in the School of Computing, Dublin City University (DCU), Dublin, Ireland. In 2009, I became a Postdoctoral Researcher at Norwegian University of Science and Technology (NTNU), Norway, and was supported by an Alain Bensoussan fellowship from the European Research Consortium for Informatics and Mathematics (ERCIM). Between 2012 and 2016 I was employed as Associate Professor at NTNU doing research and teaching. Currently I am working at SINTEF Ocean. My research interests include mathematical and applied problems that arise in the field of computer vision with particular focus in mathematical optimization and convex programming, statistical object and pattern recognition, symmetry detection, segmentation, classification, and 3-D reconstruction methods.

Publikasjoner

  • Kronologisk
  • Etter kategori
  • Alle publikasjoner i Nasjonalt vitenarkiv (NVA)

2025

  • Høgstedt, Espen Uri; Schellewald, Christian; Stahl, Annette; Mester, Rudolf. (2025) A Multi-Purpose Tracking Framework for Salmon Welfare Monitoring in Challenging Environments.
    Vitenskapelig kapittel
  • Fjorden, Thomas; Høgstedt, Espen B.; Schellewald, Christian; Mester, Rudolf; Remen, Mette; Nytrø, Ane Vigdisdatter; Stahl, Annette. (2025) Image-based quantification of scale loss in fish using machine learning and computer vision. Proceedings of SPIE, the International Society for Optical Engineering
    Vitenskapelig artikkel

2024

  • Skaldebø, Martin Breivik; Schellewald, Christian; Evjemo, Linn Danielsen; Amundsen, Herman Biørn; Xanthidis, Marios; Kelasidi, Eleni. (2024) Approaches Enabling Underwater Autonomy and Sensing in Sea-Based Aquaculture Settings.
    Vitenskapelig kapittel
  • Høgstedt, Espen Berntzen; Schellewald, Christian; Mester, Rudolf; Stahl, Annette. (2024) Automated computer vision based individual salmon (Salmo salar) breathing rate estimation (SaBRE) for improved state observability. Aquaculture
    Vitenskapelig artikkel
  • Fjorden, Thomas; Stahl, Annette; Schellewald, Christian; Mester, Rudolf; Høgstedt, Espen Berntzen. (2024) AI-driven Analysis: Image based qualification of Scale Loss in Fish using Machine Learning and Computer Vision. Norges teknisk-naturvitenskapelige universitet
    Masteroppgave
  • Wiik, Magnus; Stahl, Annette; Schellewald, Christian; Mester, Rudolf; Høgstedt, Espen Berntzen. (2024) Assessing Re-Identification Capabilities of Salmon Body Parts Using AI-Based Computer Vision Methods. Norges teknisk-naturvitenskapelige universitet
    Masteroppgave
  • Larsen, Sindre; Stahl, Annette; Schellewald, Christian; Mester, Rudolf; Høgstedt, Espen Berntzen. (2024) Objective Analysis of Melanin Spots as Welfare Signals in Atlantic Salmon Using AI-Based Computer Vision. Norges teknisk-naturvitenskapelige universitet
    Masteroppgave
  • Yip, Mau Hing; Stahl, Annette; Schellewald, Christian. (2024) Robust Hole-Detection in Triangular Meshes Irrespective of the Presence of Singular Vertices. Computer-Aided Design
    Vitenskapelig artikkel
  • Yip, Mau Hing; Schellewald, Christian; Gambin, Timmy; Stahl, Annette. (2024) Active Pose - Autonomous Hole-Filling Techniques for 3D Surface Reconstruction in Underwater Exploration. IFAC-PapersOnLine
    Vitenskapelig artikkel
  • Schellewald, Christian; Saad, Aya; Stahl, Annette. (2024) Mouth Opening Frequency of Salmon from Underwater Video Exploiting Computer Vision. IFAC-PapersOnLine
    Vitenskapelig artikkel

2023

  • Høgstedt, Espen Berntzen; Stahl, Annette; Schellewald, Christian. (2023) Developing a deep learning pipeline for automated salmon welfare analysis by respiration frequency. Norges teknisk-naturvitenskapelige universitet
    Masteroppgave

2022

  • Madshaven, Arild; Schellewald, Christian; Stahl, Annette. (2022) Hole Detection in Aquaculture Net Cages from Video Footage. Proceedings of SPIE, the International Society for Optical Engineering
    Vitenskapelig artikkel
  • Schellewald, Christian; Stahl, Annette. (2022) Irregularity Detection in Net Pens Exploiting Computer Vision. IFAC-PapersOnLine
    Vitenskapelig artikkel
  • Nygård, Trym Anthonsen; Jahren, Jan Henrik; Schellewald, Christian; Stahl, Annette. (2022) Motion Trajectory Estimation of Salmon Using Stereo Vision. IFAC-PapersOnLine
    Vitenskapelig artikkel
  • Eilertsen, Espen; Asderis, Michalis; Papandroulakis, Nikos; Caharija, Walter; Frank, Kevin; kapelonis, Zacharias; Schellewald, Christian. (2022) Quantification of acoustic target shadowing for biomass estimation in aquaculture net-pens. OCEANS
    Vitenskapelig artikkel

2021

  • Jónsdóttir, Kristbjörg Edda; Mathiassen, John Reidar Bartle; Schellewald, Christian; Volent, Zsolt; Rosten, Carolyn; Sunde, Leif Magne; Schrøder, Merete Bjørgan. (2021) Akustiske og visuelle verktøy kan bidra til dokumentasjon av fiskevelferd ved håndteringsoperasjoner. Norsk Fiskeoppdrett
    Populærvitenskapelig artikkel
  • Schellewald, Christian; Stahl, Annette; Kelasidi, Eleni. (2021) Vision-based pose estimation for autonomous operations in aquacultural fish farms. IFAC-PapersOnLine
    Vitenskapelig artikkel
  • Svendsen, Eirik; Volent, Zsolt; Schellewald, Christian; Tsarau, Andrei; Bjorgan, Asgeir; Venås, Birger; Bloecher, Nina; Bondø, Morten Steen; Føre, Martin; Jónsdóttir, Kristbjörg Edda. (2021) Identification of spectral signature for in situ real-time monitoring of smoltification. Applied Optics
    Vitenskapelig artikkel

2020

  • Kelasidi, Eleni; Schellewald, Christian; Yip, Mauhing; Remmen, Bjørnar Moe. (2020) Data capture and real-time data quality analysis - OC2020 A-033. SINTEF Ocean AS
    Forskningsrapport
  • Kelasidi, Eleni; Su, Biao; Thorbjørnsen, Eirik Storås; Moen, Endre; Schellewald, Christian; Yip, Mau Hing; Remmen, Bjørnar Moe; Mulelid, Mats. (2020) CAGEREPORTER - Development of technology for autonomous, bio-interactive and high-quality data acquisition from aquaculture net cages. SINTEF Ocean AS
    Forskningsrapport

2019

  • Lien, Andreas Myskja; Schellewald, Christian; Stahl, Annette; Frank, Kevin; Skøien, Kristoffer Rist; Tjølsen, Jan Inge. (2019) Determining spatial feed distribution in sea cage aquaculture using an aerial camera platform. Aquacultural Engineering
    Vitenskapelig oversiktsartikkel

2017

  • Føre, Martin; Svendsen, Eirik; Frank, Kevin; Schellewald, Christian; Sunde, Leif Magne; Stahl, Annette; Alfredsen, Jo Arve. (2017) LAKSIT:Telemetri og maskinsyn for overvåkning og dokumentasjon av fiskevelferd i avlusningsprosesser. Norsk Fiskeoppdrett
    Populærvitenskapelig artikkel
  • Føre, Martin; Frank, Kevin; Svendsen, Eirik; Schellewald, Christian; Sunde, Leif Magne; Alfredsen, Jo Arve; Stahl, Annette. (2017) Telemetri og maskinsyn for overvåking av trender i tilstander hos laks før, under og etter avlusning Prosjektrapport for prosjektet "Teknologi for nye datatyper og informasjon som beskriver situasjon og tilstand hos laksefisk i kommersielle merder (LAKSIT)" FHF Pnr. 901184. SINTEF Ocean AS
    Forskningsrapport
  • Føre, Martin; Frank, Kevin; Norton, Tomas; Svendsen, Eirik; Alfredsen, Jo Arve; Dempster, Timothy David; Eguiraun, Harkaitz; Watson, Win; Stahl, Annette; Sunde, Leif Magne. (2017) Precision fish farming: A new framework to improve production in aquaculture. Biosystems Engineering
    Vitenskapelig artikkel

2016

  • Stahl, Annette; Kvamsdal, Trond; Schellewald, Christian. (2016) Post-processing and visualization techniques for isogeometric analysis results. Computer Methods in Applied Mechanics and Engineering
    Vitenskapelig artikkel

2014

  • Schellewald, Christian; Kazakauskas, Vilius. (2014) 3D Surface Matching Optimization Techniques and Registration of Large Data Sets. Tapir Akademisk Forlag
    Masteroppgave

2013

  • Schellewald, Christian; Theoharis, Theoharis; Gebremariam, Kidane Fanta; Kvittingen, Lise. (2013) FP7-ICT D3.1 State-of-the-art Report on Deterioration Simulation; Deliverable Workpackage 3. presious
    Forskningsrapport

2012

  • Stahl, Annette; Schellewald, Christian; Stavdahl, Øyvind; Aamo, Ole Morten; Adde, Lars; Kirkerød, Harald. (2012) An Optical Flow-Based Method to Predict Infantile Cerebral Palsy. IEEE transactions on neural systems and rehabilitation engineering
    Vitenskapelig artikkel
  • Schellewald, Christian. (2012) A Convex Relaxation Bound for Subgraph Isomorphism. International Journal of Combinatorics
    Vitenskapelig artikkel

2007

  • Schellewald, Christian. (2007) A Bound for Non-subgraph Isomorphism. Springer
    Antologi
  • Schellewald, Christian; Roth, Stefan; Schnoerr, Christoph. (2007) Evaluation of a convex relaxation approach to the quadratic assignment of relational object views. Image and Vision Computing
    Vitenskapelig artikkel

2005

  • Schellewald, Christian; Schnoerr, Christoph. (2005) Probabilistic Subgraph Matching Based on Convex Relaxation. Springer
    Antologi
  • Schellewald, Christian. (2005) Convex Mathematical Programs for Relational Matching of Object Views. University of Mannheim
    Doktoravhandling

2003

  • Schellewald, Christian; Schnoerr, Christoph. (2003) Subgraph Matching with Semidefinite Programming. Electronic Notes in Discrete Mathematics
    Vitenskapelig artikkel
  • Keuchel, Jens; Schnoerr, Christoph; Schellewald, Christian; Cremers, Daniel. (2003) Binary Partitioning, Perceptual Grouping, and Restoration with Semidefinite Programming. IEEE Transactions on Pattern Analysis and Machine Intelligence
    Vitenskapelig artikkel
  • Schellewald, Christian; Winkler, Florian. (2003) Optimization techniques for the estimation of disparity in stereo images. CVGPR--group, University of Mannheim, Germany
    Masteroppgave

2002

  • Schellewald, Christian; Roth, Stefan. (2002) Performance evaluation of a convex relaxation ap- proach to the quadratic assignment of relational object views. University of Mannheim
    Forskningsrapport
  • Schellewald, Christian. (2002) Unsupervised Image Partitioning with Semidefinite Programming. Springer
    Antologi
  • Schellewald, Christian; Schnoerr, Christoph. (2002) Subgraph matching with semidefinite programming. University of Mannheim
    Forskningsrapport
  • Keuchel, Jens; Schnoerr, Christoph; Schellewald, Christian; Cremers, Daniel. (2002) Binary partitioning, perceptual grouping, and restoration with semidefinite programming. University of Mannheim
    Forskningsrapport

2001

  • Schellewald, Christian; Roth, Stefan; Schnoerr, Christoph. (2001) Evaluation of Convex Optimization Techniques for the Weighted Graph-Matching Problem in Computer Vision. Lecture Notes in Computer Science (LNCS)
    Vitenskapelig artikkel
  • Keuchel, Jens; Schellewald, Christian; Cremers, Daniel; Schnoerr, Christoph. (2001) Convex Relaxations for Binary Image Partitioning and Perceptual Grouping. Lecture Notes in Computer Science (LNCS)
    Vitenskapelig artikkel
  • Schellewald, Christian; Keuchel, Jens; Schnoerr, Christoph. (2001) Image Labeling and Grouping by Minimizing Linear Functionals over Cones. Lecture Notes in Computer Science (LNCS)
    Vitenskapelig artikkel
  • Schellewald, Christian; Roth, Stefan. (2001) Analysis of a Deterministic Annealing Method for Graph Matching and Quadratic Assignment Problems in Computer Vision. CVGPR--group, University of Mannheim
    Masteroppgave

2000

  • Cremers, Daniel; Schnoerr, Christoph; Weickert, J.; Schellewald, Christian. (2000) Learning Translation Invariant Shape Knowledge for Steering Diffusion-Snakes. The journal of artificial intelligence research
    Vitenskapelig artikkel
  • Cremers, Daniel; Schnoerr, Christoph; Weickert, J.; Schellewald, Christian. (2000) Diffusion-snakes using statistical shape knowledge. Lecture Notes in Computer Science (LNCS)
    Vitenskapelig artikkel

1996

  • Schellewald, Christian. (1996) Kriterien für quantenmechanische integrabilität. Institut of Physics, University of Dortmund
    Masteroppgave

Tidsskriftspublikasjoner

  • Fjorden, Thomas; Høgstedt, Espen B.; Schellewald, Christian; Mester, Rudolf; Remen, Mette; Nytrø, Ane Vigdisdatter; Stahl, Annette. (2025) Image-based quantification of scale loss in fish using machine learning and computer vision. Proceedings of SPIE, the International Society for Optical Engineering
    Vitenskapelig artikkel
  • Schellewald, Christian; Roth, Stefan; Schnoerr, Christoph. (2001) Evaluation of Convex Optimization Techniques for the Weighted Graph-Matching Problem in Computer Vision. Lecture Notes in Computer Science (LNCS)
    Vitenskapelig artikkel
  • Schellewald, Christian; Schnoerr, Christoph. (2003) Subgraph Matching with Semidefinite Programming. Electronic Notes in Discrete Mathematics
    Vitenskapelig artikkel
  • Stahl, Annette; Schellewald, Christian; Stavdahl, Øyvind; Aamo, Ole Morten; Adde, Lars; Kirkerød, Harald. (2012) An Optical Flow-Based Method to Predict Infantile Cerebral Palsy. IEEE transactions on neural systems and rehabilitation engineering
    Vitenskapelig artikkel
  • Keuchel, Jens; Schellewald, Christian; Cremers, Daniel; Schnoerr, Christoph. (2001) Convex Relaxations for Binary Image Partitioning and Perceptual Grouping. Lecture Notes in Computer Science (LNCS)
    Vitenskapelig artikkel
  • Jónsdóttir, Kristbjörg Edda; Mathiassen, John Reidar Bartle; Schellewald, Christian; Volent, Zsolt; Rosten, Carolyn; Sunde, Leif Magne; Schrøder, Merete Bjørgan. (2021) Akustiske og visuelle verktøy kan bidra til dokumentasjon av fiskevelferd ved håndteringsoperasjoner. Norsk Fiskeoppdrett
    Populærvitenskapelig artikkel
  • Føre, Martin; Svendsen, Eirik; Frank, Kevin; Schellewald, Christian; Sunde, Leif Magne; Stahl, Annette; Alfredsen, Jo Arve. (2017) LAKSIT:Telemetri og maskinsyn for overvåkning og dokumentasjon av fiskevelferd i avlusningsprosesser. Norsk Fiskeoppdrett
    Populærvitenskapelig artikkel
  • Schellewald, Christian; Roth, Stefan; Schnoerr, Christoph. (2007) Evaluation of a convex relaxation approach to the quadratic assignment of relational object views. Image and Vision Computing
    Vitenskapelig artikkel
  • Keuchel, Jens; Schnoerr, Christoph; Schellewald, Christian; Cremers, Daniel. (2003) Binary Partitioning, Perceptual Grouping, and Restoration with Semidefinite Programming. IEEE Transactions on Pattern Analysis and Machine Intelligence
    Vitenskapelig artikkel
  • Schellewald, Christian; Stahl, Annette; Kelasidi, Eleni. (2021) Vision-based pose estimation for autonomous operations in aquacultural fish farms. IFAC-PapersOnLine
    Vitenskapelig artikkel
  • Madshaven, Arild; Schellewald, Christian; Stahl, Annette. (2022) Hole Detection in Aquaculture Net Cages from Video Footage. Proceedings of SPIE, the International Society for Optical Engineering
    Vitenskapelig artikkel
  • Cremers, Daniel; Schnoerr, Christoph; Weickert, J.; Schellewald, Christian. (2000) Learning Translation Invariant Shape Knowledge for Steering Diffusion-Snakes. The journal of artificial intelligence research
    Vitenskapelig artikkel
  • Cremers, Daniel; Schnoerr, Christoph; Weickert, J.; Schellewald, Christian. (2000) Diffusion-snakes using statistical shape knowledge. Lecture Notes in Computer Science (LNCS)
    Vitenskapelig artikkel
  • Schellewald, Christian; Keuchel, Jens; Schnoerr, Christoph. (2001) Image Labeling and Grouping by Minimizing Linear Functionals over Cones. Lecture Notes in Computer Science (LNCS)
    Vitenskapelig artikkel
  • Høgstedt, Espen Berntzen; Schellewald, Christian; Mester, Rudolf; Stahl, Annette. (2024) Automated computer vision based individual salmon (Salmo salar) breathing rate estimation (SaBRE) for improved state observability. Aquaculture
    Vitenskapelig artikkel
  • Schellewald, Christian. (2012) A Convex Relaxation Bound for Subgraph Isomorphism. International Journal of Combinatorics
    Vitenskapelig artikkel
  • Lien, Andreas Myskja; Schellewald, Christian; Stahl, Annette; Frank, Kevin; Skøien, Kristoffer Rist; Tjølsen, Jan Inge. (2019) Determining spatial feed distribution in sea cage aquaculture using an aerial camera platform. Aquacultural Engineering
    Vitenskapelig oversiktsartikkel
  • Schellewald, Christian; Stahl, Annette. (2022) Irregularity Detection in Net Pens Exploiting Computer Vision. IFAC-PapersOnLine
    Vitenskapelig artikkel
  • Nygård, Trym Anthonsen; Jahren, Jan Henrik; Schellewald, Christian; Stahl, Annette. (2022) Motion Trajectory Estimation of Salmon Using Stereo Vision. IFAC-PapersOnLine
    Vitenskapelig artikkel
  • Svendsen, Eirik; Volent, Zsolt; Schellewald, Christian; Tsarau, Andrei; Bjorgan, Asgeir; Venås, Birger; Bloecher, Nina; Bondø, Morten Steen; Føre, Martin; Jónsdóttir, Kristbjörg Edda. (2021) Identification of spectral signature for in situ real-time monitoring of smoltification. Applied Optics
    Vitenskapelig artikkel
  • Eilertsen, Espen; Asderis, Michalis; Papandroulakis, Nikos; Caharija, Walter; Frank, Kevin; kapelonis, Zacharias; Schellewald, Christian. (2022) Quantification of acoustic target shadowing for biomass estimation in aquaculture net-pens. OCEANS
    Vitenskapelig artikkel
  • Yip, Mau Hing; Stahl, Annette; Schellewald, Christian. (2024) Robust Hole-Detection in Triangular Meshes Irrespective of the Presence of Singular Vertices. Computer-Aided Design
    Vitenskapelig artikkel
  • Yip, Mau Hing; Schellewald, Christian; Gambin, Timmy; Stahl, Annette. (2024) Active Pose - Autonomous Hole-Filling Techniques for 3D Surface Reconstruction in Underwater Exploration. IFAC-PapersOnLine
    Vitenskapelig artikkel
  • Føre, Martin; Frank, Kevin; Norton, Tomas; Svendsen, Eirik; Alfredsen, Jo Arve; Dempster, Timothy David; Eguiraun, Harkaitz; Watson, Win; Stahl, Annette; Sunde, Leif Magne. (2017) Precision fish farming: A new framework to improve production in aquaculture. Biosystems Engineering
    Vitenskapelig artikkel
  • Schellewald, Christian; Saad, Aya; Stahl, Annette. (2024) Mouth Opening Frequency of Salmon from Underwater Video Exploiting Computer Vision. IFAC-PapersOnLine
    Vitenskapelig artikkel
  • Stahl, Annette; Kvamsdal, Trond; Schellewald, Christian. (2016) Post-processing and visualization techniques for isogeometric analysis results. Computer Methods in Applied Mechanics and Engineering
    Vitenskapelig artikkel

Bøker

  • Schellewald, Christian. (2007) A Bound for Non-subgraph Isomorphism. Springer
    Antologi
  • Schellewald, Christian; Schnoerr, Christoph. (2005) Probabilistic Subgraph Matching Based on Convex Relaxation. Springer
    Antologi
  • Schellewald, Christian. (2002) Unsupervised Image Partitioning with Semidefinite Programming. Springer
    Antologi

Del av bok/rapport

  • Høgstedt, Espen Uri; Schellewald, Christian; Stahl, Annette; Mester, Rudolf. (2025) A Multi-Purpose Tracking Framework for Salmon Welfare Monitoring in Challenging Environments.
    Vitenskapelig kapittel
  • Skaldebø, Martin Breivik; Schellewald, Christian; Evjemo, Linn Danielsen; Amundsen, Herman Biørn; Xanthidis, Marios; Kelasidi, Eleni. (2024) Approaches Enabling Underwater Autonomy and Sensing in Sea-Based Aquaculture Settings.
    Vitenskapelig kapittel

Rapport

  • Schellewald, Christian; Theoharis, Theoharis; Gebremariam, Kidane Fanta; Kvittingen, Lise. (2013) FP7-ICT D3.1 State-of-the-art Report on Deterioration Simulation; Deliverable Workpackage 3. presious
    Forskningsrapport
  • Føre, Martin; Frank, Kevin; Svendsen, Eirik; Schellewald, Christian; Sunde, Leif Magne; Alfredsen, Jo Arve; Stahl, Annette. (2017) Telemetri og maskinsyn for overvåking av trender i tilstander hos laks før, under og etter avlusning Prosjektrapport for prosjektet "Teknologi for nye datatyper og informasjon som beskriver situasjon og tilstand hos laksefisk i kommersielle merder (LAKSIT)" FHF Pnr. 901184. SINTEF Ocean AS
    Forskningsrapport
  • Schellewald, Christian; Roth, Stefan. (2002) Performance evaluation of a convex relaxation ap- proach to the quadratic assignment of relational object views. University of Mannheim
    Forskningsrapport
  • Kelasidi, Eleni; Schellewald, Christian; Yip, Mauhing; Remmen, Bjørnar Moe. (2020) Data capture and real-time data quality analysis - OC2020 A-033. SINTEF Ocean AS
    Forskningsrapport
  • Kelasidi, Eleni; Su, Biao; Thorbjørnsen, Eirik Storås; Moen, Endre; Schellewald, Christian; Yip, Mau Hing; Remmen, Bjørnar Moe; Mulelid, Mats. (2020) CAGEREPORTER - Development of technology for autonomous, bio-interactive and high-quality data acquisition from aquaculture net cages. SINTEF Ocean AS
    Forskningsrapport
  • Schellewald, Christian; Schnoerr, Christoph. (2002) Subgraph matching with semidefinite programming. University of Mannheim
    Forskningsrapport
  • Keuchel, Jens; Schnoerr, Christoph; Schellewald, Christian; Cremers, Daniel. (2002) Binary partitioning, perceptual grouping, and restoration with semidefinite programming. University of Mannheim
    Forskningsrapport

Studentoppgave eller avhandling

  • Schellewald, Christian; Kazakauskas, Vilius. (2014) 3D Surface Matching Optimization Techniques and Registration of Large Data Sets. Tapir Akademisk Forlag
    Masteroppgave
  • Fjorden, Thomas; Stahl, Annette; Schellewald, Christian; Mester, Rudolf; Høgstedt, Espen Berntzen. (2024) AI-driven Analysis: Image based qualification of Scale Loss in Fish using Machine Learning and Computer Vision. Norges teknisk-naturvitenskapelige universitet
    Masteroppgave
  • Wiik, Magnus; Stahl, Annette; Schellewald, Christian; Mester, Rudolf; Høgstedt, Espen Berntzen. (2024) Assessing Re-Identification Capabilities of Salmon Body Parts Using AI-Based Computer Vision Methods. Norges teknisk-naturvitenskapelige universitet
    Masteroppgave
  • Larsen, Sindre; Stahl, Annette; Schellewald, Christian; Mester, Rudolf; Høgstedt, Espen Berntzen. (2024) Objective Analysis of Melanin Spots as Welfare Signals in Atlantic Salmon Using AI-Based Computer Vision. Norges teknisk-naturvitenskapelige universitet
    Masteroppgave
  • Schellewald, Christian. (2005) Convex Mathematical Programs for Relational Matching of Object Views. University of Mannheim
    Doktoravhandling
  • Schellewald, Christian. (1996) Kriterien für quantenmechanische integrabilität. Institut of Physics, University of Dortmund
    Masteroppgave
  • Høgstedt, Espen Berntzen; Stahl, Annette; Schellewald, Christian. (2023) Developing a deep learning pipeline for automated salmon welfare analysis by respiration frequency. Norges teknisk-naturvitenskapelige universitet
    Masteroppgave
  • Schellewald, Christian; Roth, Stefan. (2001) Analysis of a Deterministic Annealing Method for Graph Matching and Quadratic Assignment Problems in Computer Vision. CVGPR--group, University of Mannheim
    Masteroppgave
  • Schellewald, Christian; Winkler, Florian. (2003) Optimization techniques for the estimation of disparity in stereo images. CVGPR--group, University of Mannheim, Germany
    Masteroppgave

Formidling

2024

  • Konferanseforedrag
    Schellewald, Christian; Saad, Aya; Stahl, Annette. (2024) Mouth Opening Frequency of Salmon from Underwater Video Exploiting Computer Vision - Presentation. IFAC Conference on Control Applications in Marine Systems, Robotics and Vehicles (CAMS2024)
  • Foredrag
    Schellewald, Christian. (2024) cAIge : AI and Computer Vision for Salmon Re Identification and Welfare Assessment. NCE Aquatech Cluster og Open AI Lab "afterwork" talks
  • Konferanseforedrag
    Skaldebø, Martin Breivik; Schellewald, Christian; Evjemo, Linn Danielsen; Amundsen, Herman Biørn; Xanthidis, Marios; Kelasidi, Eleni. (2024) Approaches Enabling Underwater Autonomy and Sensing in Sea-Based Aquaculture Settings. 32nd Mediterranean Conference on Control and Automation
  • Konferanseforedrag
    Yip, Mau Hing; Schellewald, Christian; Gambin, Timmy; Stahl, Annette. (2024) Active Pose - Autonomous Hole-Filling Techniques for 3D Surface Reconstruction in Underwater Exploration. 15th IFAC Conference on Control Applications in Marine Systems, Robotics and Vehicles

2022

  • Konferanseforedrag
    Schellewald, Christian; Stahl, Annette. (2022) Irregularity Detection in Net Pens Exploiting Computer Vision. 14th IFAC Conference on Control Applications in Marine Systems, Robotics, and Vehicles
  • Konferanseforedrag
    Nygård, Trym Anthonsen; Jahren, Jan Henrik; Schellewald, Christian; Stahl, Annette. (2022) Motion Trajectory Estimation of Salmon Using Stereo Vision. 14th IFAC Conference on Control Applications in Marine Systems, Robotics, and Vehicles

2021

  • Konferanseforedrag
    Schellewald, Christian; Stahl, Annette; Kelasidi, Eleni. (2021) Vision-Based Net-Pose Estimation for Autonomous Operations in Aquacultural Fish Cages. 13th IFAC Conference on Control Applications in Marine Systems, Robotics, and Vehicles IFAC CAMS
  • Konferanseforedrag
    Madshaven, Arild; Schellewald, Christian; Stahl, Annette. (2021) Hole Detection in Aquaculture Net Cages from Video Footage. 14th International Conference on Machine Vision - ICMV 2021
  • Konferanseforedrag
    Eilertsen, Espen; Asderis, Michalis; Papandroulakis, Nikos; Caharija, Walter; Frank, Kevin; kapelonis, Zacharias; Schellewald, Christian. (2021) Quantification of acoustic target shadowing for biomass estimation in aquaculture net-pens. Oceans 20221

2020

  • Foredrag
    Venås, Birger; Sunde, Leif Magne; Schrøder, Merete Bjørgan; Schellewald, Christian; Svendsen, Eirik. (2020) CROWDGUARD - VEIEN MOT AUTOMATISKE OG DATADREVNE TRENGEOPERASJONER. Havbrukskonferansen
  • Foredrag
    Kelasidi, Eleni; Su, Biao; Caharija, Walter; Frank, Kevin; Pedersen, Magnus Oshaug; Føre, Martin; Schellewald, Christian; Sunde, Leif Magne. (2020) Autonomous underwater robots for safer and more efficient operations in fish farms. HAVBRUK2020

2019

  • Konferanseforedrag
    Caharija, Walter; Kelasidi, Eleni; Pedersen, Magnus Oshaug; Bloecher, Nina; Sunde, Leif Magne; Bjelland, Hans Vanhauwaert; Føre, Martin; Schellewald, Christian; Frank, Kevin. (2019) Autonomy and remote control technology in sea aquaculture activities. Seabed Mapping and Survey 2019

2018

  • Konferanseforedrag
    Caharija, Walter; Kelasidi, Eleni; Sunde, Leif Magne; Bjelland, Hans Vanhauwaert; Føre, Martin; Schellewald, Christian; Svendsen, Eirik; Frank, Kevin; Venås, Birger. (2018) Autonomy and remote control technology in sea aquaculture activities. Breaking the surface 2018

2017

  • Foredrag
    Bloecher, Nina; Føre, Martin; Frank, Kevin; Svendsen, Eirik; Schellewald, Christian; Sunde, Leif Magne; Alfredsen, Jo Arve; Stahl, Annette. (2017) Acoustic telemetry and computer vision methods for monitoring and documenting farmed fish behaviour during delousing operations. Aquaculture Europe 2017

2016

  • Konferanseforedrag
    Stahl, Annette; Schellewald, Christian; Frank, Kevin; Rundtop, Per; Svendsen, Eirik. (2016) Computer Vision Technology in Aquaculture. Aquaculture Europe 2016

2015

  • Konferanseposter
    Gebremariam, Kidane Fanta; Barros Barbosa, Igor; Perakis, Panagiotis; Schellewald, Christian; Theoharis, Theoharis; Kvittingen, Lise. (2015) Accelerated salt weathering studies on marble stones from Elefsis, Greece, and soapstones from Grytdal, Norway. TECHNART 2015
  • Konferanseforedrag
    Perakis, Panagiotis; Schellewald, Christian; Gebremariam, Kidane Fanta; Theoharis, Theoharis. (2015) Simulating Erosion on Cultural Heritage Monuments. 20th Conference on Cultural Heritage and New Technologies
  • Konferanseforedrag
    Barbosa, Igor Barros; Gebremariam, Kidane Fanta; Perakis, Panagiotis; Schellewald, Christian; Kvittingen, Lise; Theoharis, Theoharis. (2015) Establishing Parameter Values for the Stone Erosion Process. Computer Applications and Quantitative Methods in Archaeology (CAA)

2014

  • Foredrag
    Schellewald, Christian. (2014) Se og lær om 3D-scanning og andre datavisualiseringsverktøy brukt i ulike forskningsprosjekter. Visual Computing Lab - Researchers’ Night
  • Konferanseforedrag
    Schellewald, Christian. (2014) Creation of Digital Stones from 2D Samples. Eurographics Workshop on Graphics and Cultural Heritage 2014
  • Konferanseforedrag
    Schellewald, Christian; Perakis, Panagiotis; Theoharis, Theoharis. (2014) Towards the Creation of Digital Stones from 2D Samples. Eurographics Workshop on Graphics and Cultural Heritage 2014

2013

  • Konferanseposter
    Barros Barbosa, Igor; Theoharis, Theoharis; Schellewald, Christian; Athwal, Cham. (2013) Transient biometrics using finger nails. Biometrics: Theory, Applications and Systems (BTAS), 2013 IEEE Sixth International Conference on

2010

  • Konferanseforedrag
    Schellewald, Christian. (2010) Use of Semidefinite Programming in Computer Vision. DIKU
  • Konferanseforedrag
    Schellewald, Christian. (2010) Convex Approximation for Matching Sub-graphs in Computer Vision. ICG

2009

  • Konferanseforedrag
    Schellewald, Christian. (2009) Kronecker Product Representation of Subgraph Matching and Related Problems. IET

2007

  • Konferanseforedrag
    Schellewald, Christian. (2007) Methods for Solving Matching Problems in Computer Vision. CDVP
  • Konferanseforedrag
    Schellewald, Christian. (2007) Graph-based Representations. GbR 2007 Graph-based Representations

2005

  • Konferanseforedrag
    Schellewald, Christian. (2005) Probabilistic Subgraph Matching Based on Convex Relaxation. EMMCVPR 2005

2003

  • Konferanseforedrag
    Schellewald, Christian. (2003) Subgraph Matching with Semidefinite Programming. IWCIA 2003

2001

  • Konferanseforedrag
    Schellewald, Christian. (2001) Image Labeling and Grouping by Minimizing Linear Functionals over Cones. EMMCVPR 2001
  • Konferanseforedrag
    Schellewald, Christian. (2001) Evaluation of Convex Optimization Techniques for the Weighted Graph-Matching Problem in Com- puter Vision. DAGM 2001

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