Recommended expert

Frank Rietz

Freelance Work

Frank Rietz
Magdeburg, Germany

Experience

Jan 2025 - Present
1 year 1 month

Freelance Work

  • Optimization of robots in warehouse logistics (Python)
Oct 2021 - Jul 2024
2 years 10 months
Leipzig, Germany

Research Associate

Faculty of Digital Transformation, HTWK Leipzig

  • Automated image recognition of technical drawings (Python)
Sep 2019 - Sep 2021
2 years 1 month

Freelance Work

  • Data analysis and development of image processing algorithms (Matlab, Python)
Sep 2017 - Aug 2019
2 years
Magdeburg, Germany

Algorithms Developer

Thorsis Technologies GmbH

  • Development of interpolation algorithms for image enhancement in foot pressure measurement (Octave/Matlab)
  • Simulation of radio wave propagation in traffic scenarios
  • Statistical analysis and pattern recognition in medical datasets
Nov 2015 - May 2016
7 months
Erlangen, Germany

Research Associate

Institute for Multiscale Simulation, University of Erlangen-Nuremberg

  • Continuation of the previous Göttingen project
Oct 2012 - Oct 2014
2 years 1 month
Magdeburg, Germany

Postdoc

Otto von Guericke University Magdeburg, Department of Structure Formation

  • Investigation of droplet oscillations using high-speed camera
  • Flow visualization using Particle Image Velocimetry (PIV)
  • Thermography
  • Use of lasers in experimental setups
  • Control of stepper motors
  • Flow visualization of liquids
  • Automated control using LabView
  • Supervision of diploma theses
Oct 2008 - Oct 2015
7 years 1 month
Göttingen, Germany

Research Associate

Max Planck Institute for Dynamics and Self-Organization

  • Investigation of the transition from amorphous to crystalline matter using sphere packings
  • Independent development of a three-dimensional tomographic method based on laser and refractive index matching
  • 3D image analysis using IDL
  • Development of custom algorithms for image detection
  • Processing of image artifacts
  • Automated experiment execution over several months
  • Improvement of this tomography method beyond the state of the art
  • Handling of chemicals and dyes in the chemistry lab
  • Use of lasers in experimental setups
  • Control of stepper motors
  • Temperature-controlled setup
  • Full control using LabView, C++
  • Writing of English publications
  • International conference presentations and publications
Jan 2008 - Jun 2008
6 months
Austin, United States

DAAD Scholar

Center for Nonlinear Dynamics, University of Texas

  • Start of the experiment, which was continued in Göttingen
Sep 2005 - Oct 2012
7 years 2 months
Magdeburg, Germany

Doctoral Candidate

Otto von Guericke University Magdeburg, Department of Nonlinear Phenomena

  • Discovery of new effects in convection and segregation of granular materials
  • Motion analysis in images
  • Computed tomography measurements
  • Experiments under vacuum
  • Control using LabView, C++
  • Writing English publications
  • International presentations
  • Teaching
  • Writing scientific proposals
  • Supervision of students

Skills

  • Programming Experience For 28 Years With Various Data Analysis Methods

  • Two-dimensional Image Processing (18 Years), Three-dimensional (10 Years)

  • Development Of Algorithms In Computational Geometry In All Projects

  • Statistical Optimization

  • Topological Analysis Of Point Clouds

  • Representation Of Spatial Environments Using Meshes

  • Visualization Of Volume Data

  • Programming Languages Used In Recent Years: Python (Numpy, Scipy, Pandas, Opencv, Keras)

  • Matlab, Octave, Idl, R, Mathematica, C++, Labview

  • Other Software: Blender, Uml, Latex, Origin, Pov-ray, Ms Office, Linux

  • Soft Matter, Pattern Formation In Nature, Transition Between Ordered And Disordered Systems

  • Particle Technology And Particle Visualization

  • Fluorescent Dyes, Handling Chemicals, Colloids

  • Lasers (Class 3b), Optical Instruments, High-speed Camera

  • External Control Of Measurement Devices, Computer Hardware, Vacuum Experiments

  • Guided Tours At Scientific Exhibitions

  • Experience With Image Processing (Since 2002)

  • Development Of Custom Algorithms In The Following Areas:

  • Two-dimensional And Three-dimensional Image Processing

  • Automated Capture And Analysis Of Image Sequences

  • Spline Interpolation Of Surfaces From Irregularly Spaced Data Points

  • Analysis Of Image Data Using Methods Of Computational Geometry

  • Further Processing Of Point Cloud Data

  • Object Detection Using Convolution, Hough Transform

  • Tracking Detected Objects In Image Sequences

  • Measurement Of Flow Fields Using Tracers In Liquids And Granular Materials

  • Morphological Image Operations

  • Metric Characterization Of Image Elements

  • Subpixel Operations, Detection With Subpixel Accuracy (±0.1 Pixel And Better)

  • Optimization Of Algorithms For Memory Usage And Cpu Time

  • Implementation Of Current Algorithms From The Literature

  • Development Of Improved Custom Detection Methods

  • Visualization Of Image Data Using False Color And Rendering

  • Creation Of Animations To Visualize Three-dimensional Data

  • Experience With Computed Tomography And Radioscopy

  • ‘Small Animal In Vivo Scanner’, Nanospect/ct, Leibniz Institute For Neurobiology Magdeburg

  • Radioscopy System Gs 220, Sauerwein Gmbh, 32 Kev, Institute For Materials And Joining Technology, University Of Magdeburg

  • ‘Ct Alpha Procon X-ray’, 160 Kev, Institute For Thermal Process Engineering, Nawitec, University Of Magdeburg

  • ‘Phoenix Nanotom’, 180 Kev, Max Planck Institute For Dynamics And Self-organization Göttingen

  • ‘Siemens Artis Zeego’, Experimental Factory Magdeburg

  • Experience With Labview (2008-2016)

  • Control Of Various Scientific Cameras (Labview Vision As Well As Firmware)

  • Control Of Stepper Motors

  • Reading Measurement Sensors

  • Coordination Of Multiple Components

  • Saving Measurement Data And Images

  • Interactive Control Of The Program Flow Via Measurement Data

  • Automated Multi-month Runtime With Human Remote Supervision

  • Optimization For Stability And Speed

  • Knowledge Of Labview Pitfalls

  • Largest Project: 8 Years

  • Experience With Scientific Cameras (2002-2016)

  • High-speed Cameras

  • Hisis 2002, Ksv Instruments Ltd

  • Kodak Ektapro 4540mx Imager

  • Shimadzu Prototype, On-chip Technology (Isis), 1 Million Images/s

  • Photron

  • Infrared Cameras

  • Infratec Image Ir 8300, High-speed

  • Itema Thv 900

  • Other Cameras

  • Sony Xcd U100

  • Kodak Megaplus 6.3i

  • Hamamatsu C9300-201

  • Basler A302b

  • Control

  • Labview, C++

  • Usb, Firewire, Ethernet

  • Triggering: Software And External

  • Accessories

  • Optical Filters

  • Uniform Lighting

  • Fluorescent Dyes

  • Laser

Languages

German
Native
English
Advanced
Russian
Advanced
Ukrainian
Elementary

Education

Sep 2005 - Oct 2012

Otto von Guericke University Magdeburg

Dr. rer. nat., Physics · Physics · Magdeburg, Germany

Oct 1998 - Jun 2005

Otto von Guericke University Magdeburg

Diploma in Physics and Intermediate Examination in Philosophy · Physics and Philosophy · Magdeburg, Germany

Oct 1990 - Jun 1997

Gymnasium am Markt

Abitur · Hettstedt, Germany

Certifications & licenses

Deep Learning

Nikolaos Fostiropoulos Certified Training Provider

Statistics

Nikolaos Fostiropoulos Certified Training Provider

Machine Learning

Nikolaos Fostiropoulos Certified Training Provider

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