April brings flowers, baseball season, and the Trenton Computer Festival, though this year TCF is starting early. Typically held in the middle-end of the month, TCF’s 36th incarnation will kick off on Friday, April 1, with the TCF IT Professional Conference, from 9 a.m. to 5 p.m. at the College of New Jersey in Ewing.

The festival proper runs on Saturday, April 2, from 9 a.m. to 5 p.m. and Sunday, April 3, from 9 a.m. to 4 p.m. Cost: $15 for two days, $10 for Sunday only. Visit www.tcf-nj.org.

This year’s keynote speaker is Larry O’Gorman of Alcatel-Lucent Bell Labs in Murray Hill, who will present “Tales in Multimedia Security: From Digital Libraries to Biometrics to Telepresence” on Saturday, April 2, at 2:35 p.m. O’Gorman’s talk looks at common paths to success shared by past and current multimedia technologies.

In the early days of the World Wide Web, for example, content providers were reluctant to publish electronically for fear of theft of material, so technologists provided watermarking, according to O’Gorman. Then came anti-counterfeiting technology combining image processing with the then-new technology of public key cryptography. Innovative, yes. But was it really successful?

These days computer security revolves around biometrics and telepresence. An epochal (in computer terms) 46 years after AT&T introduced the Picturephone most of us still travel rather than meet via video conference. Most people blame still-insignificant bandwidth and network issues, but O’Gorman suggests a more user-centric challenge – video privacy. But if that’s the case, how can we overcome it?

O’Gorman, who earned his bachelor’s (University of Ottawa), master’s (University of Washington), and Ph.D. (Carnegie Mellon) in electrical and computer engineering, studies image processing, pattern recognition, speech and video analytics, and multimedia security at Alcatel-Lucent Bell. He also works in multimedia signal processing. Prior to Bell he worked at Avaya Labs Research on signal and system security, signal processing, and multi-media systems, and before that he was co-founder of Veridicom Inc., a developer of personal fingerprint authentication systems.

TCF 2011 also features a new, one-day Arduino Developer/User workshop on Saturday to explain open-source electronic prototyping; ISEC, the first national conference devoted to STEM (science, tech, engineering, and math), sponsored by the IEEE Education Society; and the ARRL N.J. State Amateur Radio Convention.

As always, TCF also will feature its indoor computer and electronics sale (beginning at 9 a.m. on Saturday and Sunday,), and outdoor flea market (beginning at 8 a.m. both days).

TCF’s other presentations and workshops include:

What’s New in Video Games for 2011 – 3D!, Saturday, 1:30 p.m.

Introduction to CUDA and its applications, Saturday, 11:20 a.m.

RESTful Web Service – What is it, Saturday, 10:15 a.m.

Web Application Development, Saturday, 12:25 p.m.

Controlling the World with PIC Microcontrollers, Saturday, 11:20 a.m.

Making your Printed Circuit Boards, Saturday, 3:40 p.m.

Automatic Packet Reporting System, Sunday, 11:20 a.m.

Solar Power Now, Saturday, 12:25 p.m.

The Forefathers of Radio, Sunday, 10:15 a.m.

Home Automation Demonstration, Saturday, 12:25 p.m.

Marine Radio – U.S. Coast Guard Auxiliary Rescue 21 Communication System, Saturday, 10:15 a.m.

CyberSecurity for the Home, Saturday, 1:30 p.m.

Workshop on Making Music in Second Life: SL and the 21st Century Musician, Saturday, 12:25 p.m.

Social Media – Learn Key Tools to Connect with Friends, Family, and Others , Saturday, 1:30 p.m.

Lego Mindstorms Demo, Saturday, 12:25 p.m.

Logbook of The World, Saturday, 3:40 p.m.

Preserving Privacy with Virtual Machines, Saturday, 12:25 p.m.; Sunday, 1:30 p.m.

Cyber Hospitality in Safety: Protecting against Shared Broadband Contagion [How to Have Both WiFi Security and Hospitality], Saturday, 10:15 a.m.; Sunday, 2:35 p.m.

Secrets of the Attention Drive, Saturday, 3:40 p.m.; Sunday, 1:30 p.m.

Getting Started with Microcomputers, the Internet, and Digital Photography, Saturday, 10:15 a.m.

Project Management, Saturday, 3:40 p.m.

C# .NET Programming, Sunday, 10:15 to 11:10 a.m.

Workshop on Video Game Design with Scratch, Saturday, 10:15 a.m.

The New “Internet of Things” Sunday, 10:15 a.m.

Vintage Computer Collecting for Beginners, Sunday, 1:30 p.m.

Best Websites, Search Engines, and Software, Saturday and Sunday, 11:20 a.m.

Getting Started on Moonbounce, Sunday, 11:20 a.m.

Contesting 101, Sunday, 10:15 a.m.

Freeware Gaming, Saturday, 12:25 p.m.

Data Logging Projects for the PIC Microcontroller, Saturday, 1:30 p.m.

Winlink 2000, Packet and NTSD, Sunday, 2:35 p.m.

GPS Secrets, Saturday, 10:15 a.m.

Discover iPad, Saturday and Sunday, 10:15 a.m.

Apple and Accessibility-Making Technology Available to All Learners, Saturday, 11:20 a.m.

Introducing Mac OS X v.10.6 Snow Leopard, Saturday, 12:20 p.m.; Sunday, 11:20 a.m.

iLife ‘11 – Do more with photos, movies, and music on your Mac, Saturday and Sunday, 1:30 p.m.

iWork – Impressive Documents, Spreadsheets, and Presentations, Saturday, 3:40 p.m.; Sunday, 2:35 p.m.

Welcome Windows Users – Mac/Windows Compatibility, Sunday, 12:25 p.m.

An Introduction to Firefox Features and Customization, Saturday, 11:10 a.m.; Sunday, 2:35 p.m.

NJ Science and History Resources, Saturday, 11:20 a.m.; Sunday, 2:35 p.m.

Essentials of Effective Communications in Workplace – Beyond Basics, Sunday, 12:25 p.m.

Introduction to Object — Oriented Programming and Design Principles, Saturday, 11:20 a.m.

Hands—On Java Programming Workshop, Part 1: Saturday, 1:30 p.m.; Part 2: Saturday, 3:35 p.m.

Introduction to C++ and C++ Advanced Features, Sunday, 11:20 a.m.

Rapid E-Learning Development with Adobe Captivate 5.0, Saturday, 10:15 a.m.

TransMedia for E-learning, Filmmaking, and Selling Your Stories, Saturday, 11:30 a.m.

Introduction to VHF, Sunday, 1:30 p.m.

NJ RACES Symposium, Sunday, 1:30 p.m.

A Brief Tour of Windows 7 and Office 2010 in the Cloud, Saturday, 12:25 p.m.; Sunday, 12:25 p.m.

Arduino Developers Workshop, Saturday, 10:15 a.m.

10 Tips for Teaching Silver Surfers, Saturday, 3:40 p.m.

Linux for the Home, a Primer, Saturday, 3:40 p.m.

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