Harald Reingruber
Time 2022-10-14 00:41:18Web Name: Harald Reingruber
WebSite: http://www.h-reingruber.at
ID:351616
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Light version Profile
Harald Reingruber
Visual Computing Expert and Software Crafter (Unity3D/C#/C++/JavaScript)
Name:Harald Reingruber Date of birth:May 29, 1985 Address:Scharnstein, Upper Austria, Austria Email:harald.reingruber@gmail.com Website:https://dev.to/Harald3DCVAreas of Expertise
Professional:Augmented realityReal-time GraphicsInformation visualizationVolume renderingImage processing, medical image processingUniversity:Computer visionPattern recognition and machine learningObject/feature detection and trackingWhat I like
Simple but clever solutions to complicated or complex problemsProfiling performance and memory consumptionContinuous improvementClean, readable codeThe boy scout ruleWorking as a teamHands-on attitudeFixing root causes instead of symptomsResume
Programming Languages
C++C#TypeScript/JavaScriptEmscripten/WebAssemblyJava3D Programming
Unity 3DOgreOpenGL/WebGLDirectXComputer Vision
OpenCVMatlabPoint Cloud LibraryAugmented Reality/Depth Sensing SDKs
Vuforia, Kudan, Structure, Intel RealSense
High performance computing
SIMD (SSE/AVX/Neon), OpenCL, Cuda
SCM & Continuous Integration
CMake, GIT, GitHub, GitLab, Jenkins, Teamcity, Docker, Yarn/NPM, Maven, SonarQube
Software Engineering
Unit Testing/TDD, Agile Software Development (Scrum, Kanban), Clean Code, Continuous Improvement
Podcast Appearances
Pair-Programming Tour:
Mob Mentality Show
Software Developers Jorney
Legacy Code Rocks
Conference Visits
Socrates Austria, LinzOctober 4-5, 2019
Unity Unite, Amsterdam
June 27-29, 2017
Meeting C++, Berlin
December 5-6, 2014
Agile Tour, Vienna
2013, 2014, 2018
DevFest, Vienna
2013, 2015, 2016, 2017, 2019
Winter Augmented Reality Meeting, Graz 2016
Meetups
Mob-Programming on Open Source Software, Vienna (Organizer)Unity Meetup Vienna, Vienna (Organizer)
Vienna Computer Vision Meetup, Vienna (Co-organizer)
Languages
GermanEnglishSpanishHobbies
Basketball, snowboarding, cycling, surfingProfessional Experience
09.2016 - 10.2019three10, Vienna
Software Engineer, Unity3D/C#/C++/TypeScript/JavaScript
The three10 software allows delivering presentations including 2D and 3D media content synchronized across multiple devices. For example, a mobile device can be used for remote-controlling the presentation while a high-end graphics device is visualizing the presentation on a high-resolution video wall.
As one of two principal engineers in a team of 6 developers, I am the main responsible engineer for the secure communication and file transfer between the Unity 3D application and the on-premise backend server. The architecture of the TypeScript/React/Node.js backend software is also one of my responsibilities.
Most notable achievements:
Implemented a JavaScript library for streaming server-side Unity 3D graphics in real-time from a cloud server to an HTML5 browser using a low-latency video codec.Implemented HTML5 Server-Sent-Events for pushing data updates from the backend server to the Unity 3D client software (C# client implementation, as well as Node.js server implementation).Implemented a Docker deployment pipeline for our on-premise backend software, in order to minimize the impact of running the software on various operating systems and versions.Implemented screen capturing and streaming over the network.Became the go-to guy for Git, Docker, Gitlab, Gitlab CI and Unity Cloud Build.Principal technical contact during the Audi software security certification process.See the three10 multi-client presentation and collaboration software in action:
04.2015 - 08.2016ViewAR, Vienna
Software Engineer, C++/Objective-C/Java
The ViewAR application framework combines a native C++ core, with an HTML5 User Interface allowing low-effort User Interface customization and supports multiple platforms (iOS, Android, Windows).
As the principal engineer in the C++ team, I was responsible for extending and improving the ViewAR core module and integrating the latest third-party Augmented and Virtual Reality SDKs.
Most notable achievements:
An algorithm for computing the volume of scanned objects has been implemented. Therefore, a watertight (hole-free) 3D triangle mesh has to be computed from the original 3D model captured with depth-sensing cameras. See the 3D scanning and volume computation application in action:Cross-compiling the ViewAR C++ core using Emscripten/WebAssembly to JavaScript and WebGLIntegrated video decoding in order to support video textures in 3D 10.2013 - 04.2015Agfa Healthcare, Vienna
3D Volume Rendering Engineer, C++
I have been the main engineer responsible for extending and maintaining Agfa's volume rendering engine, in a team of 8 engineers located in Austria, Belgium, and Canada. The engine supports GPU and CPU rendering, the CPU version heavily uses SIMD instructions for boosting the CPU rendering performance.
Most notable achievements:
Implemented bi-cubic filtering for improving the resampling quality of low-resolution images using WebGLImplemented a CMake build system, in order to replace the separate build scripts for several platformsSee the volume rendering engine in action:
09.2010 - 10.2013Agfa Healthcare, Vienna
Software Engineer, 3D Visualization, Java
In a team of 22 people, I was responsible for implementing and maintaining 3D visualization features and the loading of volume image data.
Most notable achievements:
Implemented progressive loading of volume image data (patent claimed)Visualization of the normal plane in the unfolded blood vessel viewImproved visualization of the intersection of 2D annotations with the current view plane (semi-transparent rendering of the part overlapping with the adjacent slice) 10.2009 - 07.2010Austrian Institute of Technology (AIT), Vienna
Master thesis, Computer Vision, Matlab
An asynchronous Data Interface for Event-based Stereo Vision Systems
The aim of my master thesis was to improve 3D reconstruction accuracy of a stereo camera system using special image sensors which only transmits data for the pixels sensing light intensity changes (for example movements).
Most notable achievement:
Improved image quality/sharpness by adjusting the retention time of pixel events depending on the event density, which is an indicator for the movement velocity 02.2009 - 07.2009Computer Vision Center, Universitat Autònoma de Barcelona, Spain
Final year project, Feature Detection, Matlab
Intestinal Content Detection in Capsule Endoscopy using Robust Features
The aim of this project was to develop a method supporting the automatic analysis of capsule endoscopy studies in order to handle the large amount of image data in the daily clinical routine.
Most notable achievement:
Implemented a Support Vector Machines (SVM) detector for detecting intestinal content (71 % accuracy)Competition
Catalysts Coding Contest
Biggest programming contest in the German-speaking countries (Germany, Austria and Switzerland).
October 19, 2012, Vienna:26th place (250 participants)October 21, 2011, Vienna:26th place (130 participants)The goal was to be the first finishing all levels of the assignment.
Education
10.2007 - 10.2011Vienna University of Technology
MSc in Computer Science, Visual Computing
http://www.tuwien.ac.at/en/tuwien_home/
Image processing(Real-time) computer graphicsMachine learningPattern recognitionComputer visionAugmented reality 02.2009 - 07.2009Universitat Autònoma de Barcelona, Spain
University exchange program, Computer Vision
http://www.cvc.uab.es/
Feature detection (SIFT, SURF)Machine learning (e.g. SVM) 09.2005 - 07.2007Upper Austria University of Applied Sciences, Hagenberg
BSc in Computer Science, Medical Software Engineering
http://www.fh-ooe.at/en/hagenberg-campus/
09.1999 - 07.2004High School/Junior College, Leonding
Electroinc Data Processing and Business Administration
Voluntary work
02.2014 - 02.2017Jugend Umwelt Platform (environmental youth organization), Vienna
Member of the advisory board
08.2013 - 08.2016Green Team, Frequency Festival, St. Pölten
Team leader
I was leading a group of volunteers performing an anti-littering campaign on the camping site at the Frequency Festival (approx. 50,000 daily attendees). 01.2003 - 12.2012Kulturprojekt Inzersdorfer Freundeskreis (cultural association)
Cultural event management
I was one of the main organizers of open-air festivals (approx. 1,200 attendees), concerts and cultural events. I was responsible for the artist booking, music line-up and the communication bridge between the artists and the audio/light engineers.
09.2004 - 12.2010Austrian Red Cross, Ebensee
Emergency Medical Responder & Ambulance Driver
Alternative civilian service (full time) for 1 year and volunteer (approx. 1-2 twelve-hour shifts per month) for 5 years.
Portfolio
AllPresentation and collaboration software made...
The three10 software allows delivering presentations including 2D and 3D media content synchronized→Presentation and collaboration software made...
The three10 software allows delivering presentations including 2D and 3D media content synchronized→ViewAR 3D scanning and volume computation
An algorithm for computing the volume of scanned objects has been implemented. Therefore, a→Bicubic resampling using WebGL
Improved image quality for low-resolution data set by applying bicubic resampling using WebGL→Blood vessel viewing feature
The normal planes of the blood vessel view is interesting for immediately identifying stenosis→Asynchronous Data Interface
Prior event-based vision systems used buffers over periodic time slices for converting the→Space-time visualization
This tool was part of my master thesis, for visualizing the original data of the event-based image→Intestinal Content Detector
The SIFT feature detector is used for detecting points of interest, additionally a SVM classifier→ Page 1 ofTestimonials
Robi Hammerle, three10 GmbH
I love Harald's passion to explore new things and to share his skills with others. He always strives for the best practices, instead of the quick, "naive" solution. I worked with him for over 2 years. He definitely made me a better programmer!
Alexander Hörmandinger, Agfa Healthcare GmbH
Harald's eagerness to grow as a developer in order to perfect coding skills, as well as his willingness to share knowledge make him a first-class software craftsman. His strong enthusiasm for software development and collaboration among developers is an inspiration to me.
Ferdinand Pilz, three10 GmbH
Harald is a fun coworker and downright team player who always tries to improve his and the team's performance by encouraging regular code reviews and practicing pair programming. He always strives to find a clean and elegant solution to the problem that integrates well with the existing codebase.
Contact
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