PhotoTechEDU Day 12: High Dynamic Range Image Capture
Google engEDU
1 hr – Apr 11, 2007

Google Tech Talks
April 11, 2007

ABSTRACT

Although digital imaging has been around for nearly 40 years, the past decade has seen the nearly complete replacement of analog film by digital sensors, most of which capture only a tenth the dynamic range of the black and white film Ansel Adams worked with 80 years ago. Using multiple exposure techniques (or advanced sensors), it is in fact possible to turn this around and capture ten times the range of film, equalling or surpassing the capacity of human vision. Greg will introduce some of the concepts and present a few details of HDR imaging in the context of digital photography, and demonstrate interactive software he has developed to assist in the merging of bracketed exposures.
# useful properties of light and image formation
# theory and techniques of photographic optics and image capture
# theory of colorimetry and techniques of color reproduction
# where and how photography is being used in Google products and projects
# what tools exist inside Google for photographic image storage, processing, etc.
# and lots more… Read the rest of this entry »

BGP at 18: Lessons In Protocol Design
Google engEDU
57 min – Apr 17, 2007

Google Tech Talks
April 17, 2007

ABSTRACT

18th anniversary of BGP. In this talk we examine the evolution of BGP over these 18 years, and look at the lessons we could learn from this.

Dr. Yakov Rekhter joined Juniper Networks in Dec 2000, where he is a Distinguished Engineer. Prior to joining Juniper, Yakov worked at Cisco Systems, where he was a Cisco Fellow. Prior to joining Cisco in 1995, he worked at IBM T.J. Watson Research Center.

Yakov Rekhter was one of the leading architects and a major software developer of the NSFNET Backbone Phase II. He co-designed the Border Gateway Protocol (BGP). He was also one of the lead designers of Tag Switching, BGP/MPLS based VPNs, and MPLS Traffic Engineering. Among his most recent activities is the work on Generalized Multi-Protocol Label Switching (GMPLS). His other contributions to contemporary Internet technology include: Classless Inter-Domain Routing (CIDR) and IP address allocation for private Internets.

He is the author or co-author of over 40 IETF RFCs, and numerous papers and articles on TCP/IP and the Internet. His recent books include: "MPLS: Technology and Applications" (Morgan Kauffman, 2000) and "Switching in IP Networks: IP Switching, Tag Switching and Related Technologies" (Morgan Kauffman, 1998). Read the rest of this entry »

Beyond Test Driven Development: Behaviour Driven Development
Google engEDU
48 min – Mar 17, 2006

Google TechTalks
March 17, 2006

Dave Astels

Dave Astels (co-author of "A Practical Guide to eXtreme Programming" and author of Jolt Award winning "Test-driven Development: A Practical Guide") has over 2 decades of experience in the software field, most of that involved with object-oriented technologies and techniques. Dave has been studying, practicing, teaching, evangelising, and coaching XP and Agile Processes since 1998. Dave’s experience ranges from embedded process control systems to consumer products (both consumer electronics and shrinkwrapped software) to energy trading systems. Dave is an independant software consultant specializing in the areas of agile process, programming practices, and object design/architecture. Dave is one of the thought leaders in the area of TDD, and now BDD.

ABSTRACT
Test Driven Development (TDD) has become quite well known. Many developers are getting benefit from the practice. But it is possible that we can get even more value. A new practice is getting attention these days: Behaviour Driven Development (BDD).

BDD removes all vestiges of testing and instead focuses on specifying the behaviour desired in the system being built. This talk will be focus on Ruby and will introduce a new BDD framework: rSpec. The ideas, however, are language independent. Read the rest of this entry »

Some Python Integrated Development Environments
Google engEDU
1 hr 17 min – Jul 13, 2006

Google TechTalks
July 13, 2006

Bay Area Python Interest Group

http://baypiggies.net/

Topic: Emacs
Presenter: Marylin Davis

Marilyn Davis is the Python Instructor at UCSC-Extension. She is the lead developer at Maildance.com and Deliberate.com.

Topic: Vim
Presenter: Keith Dart

Keith Dart works in QA automation and is the primary developer of the PyNMS network application framework.

Topic: Xcode
Presenter: Mark Ivey

Mark Ivey is a senior engineer at R2 Technology. Although his job doesn’t involve a lot of Python, it is his preferred evenings and weekends language.

Topic: Wing IDE
Presenter: Mike Cheponis

Mike Cheponis is President of California Wireless, Inc., a Silicon Valley consulting firm that specializes in Wireless Communications Systems, designing RF, Analog, Digital, and software subsystems and products. He writes code in assembly languages, Lisp, and Python. Read the rest of this entry »

Model-Based Testing: Black or White?
Google engEDU
1 hr – Aug 27, 2007

Google Tech Talks
August 27, 2007

ABSTRACT

Model-based testing can help to reduce the cost of testing and increase its effectiveness. Instead of designing test cases by hand, model-based testing allows a test engineer to automatically generate test cases from a model of the system under test.

After a brief overview of model-based testing, this talk will compare two different kinds of test model: black-box models and white-box models. Black-box models are easier for programmers to write and tools to use, while white-box models require more sophisticated notations and modelling skills, but can allow more sophisticated test generation.

These two styles of models will be illustrated by using two different model-based testing tools to test some example applications, such as a web-based library system. An open-source tool, ModelJUnit, will be used to illustrate test generation from several black-box test models written in Java. A commercial tool, LEIRIOS Test Designer, will be used to illustrate test generation from white-box test models written in UML

Speaker: Mark Utting

Mark Utting has been developing and using model-based testing tools since 2000. Recently, he co-authored the first industry-oriented book specifically on model-based testing, and developed the open-source ModelJUnit tool to illustrate some of the techniques in the book. He has also been a consultant for the design of commercial model-based testing tools, such as the LEIRIOS Test Designer from LEIRIOS Technologies.

Dr Utting works as an associate professor in the Department of Computer Science at The University of Waikato, New Zealand. Prior to this, he worked as an analyst/programmer in the Australian software industry for several years and as a postdoctoral researcher on theorem proving and real-time refinement. His PhD was in the area of refinement calculus techniques for object-oriented programs. He is a member of the IFIP Working Group 2.3 on Programming Methodology.

Home page: http://www.cs.waikato.ac.nz/~marku Read the rest of this entry »