Introduction to Digital Watermarking

Objectives

To introduce new users to the features and benefits of Digital Watermarking


Pre-requisites:

Experience of the Windows or Macintosh operating system or previous attendance on the equivalent training course. A knowledge of different graphics formats and web publishing is useful.


Course Includes:

A comprehensive set of reference notes covering course topics, follow-up telephone support and, for training on Transmedia premises, lunch and refreshments.


Course Outline


Introduction to Digital Watermarking




· What is digital watermarking?
· Why should I watermark my images?
· How does the Digimarc watermarking system work?
· Watermarking software
· The Digimarc Registry
· MarcSpider
· Copyright communication system
· What information can a digital watermark communicate?







General Watermarking Guidelines




· What types of images can be watermarked?
· Bitmap images vs. vector images
· File formats
· Image variations/randomness
· What size of image can be watermarked?
· Workflow overview: when to watermark images
· Setting watermark attributes
· Setting target output
· Watermark durability vs. visibility
· Using the durability/visibility
· Other factors affecting watermark durability
· Using the signal strength meter












Watermark Survival


· Image compression
· Resampling images
· Watermarking images for digital output
· DPI settings
· GIF and indexed color formats
· Watermarking images for print output
· Image size
· Printing devices
· On-screen appearance
· Scaling, Cropping and Rotation
· Combining digital watermarks with visible watermarks
· Working with composite images/montages




Using photographs on a Web site


· Issues to consider
· Recommendations
· Process




Watermarking digital images for print


· Issues to consider
· Recommendations
· Process




Watermarking JPEG-compressed images


· Issues to consider
· Recommendations
· Process-Watermarking the original, uncompressed images
· Process-Watermarking JPEG-compressed images when originals are not available