I3A Technical Forum at CTIA

Friday, April 3, 2009
Presentations are available by clicking on the session title or speaker's name in the below agenda.

Event Details

Camera phones – How good is good? Can we really measure image quality in an accurate and useful way?

The processes and metrics for measuring and reporting the image quality of mobile imaging devices are grounded in the same methods and techniques that have been used for characterizing photographic and digital imaging systems for decades. The fundamental objective measurements are those that define spatial resolution, tone and color reproduction, sensitivity, noise, and geometric fidelity.

The I3A Camera Phone Image Quality (CPIQ) Initiative group has developed objective metrics for a number of important characteristics that affect image quality, and evaluated and characterized the observer impact of those parameters on perceived quality. These new, innovative techniques for the subjective evaluation of camera phone images, used in conjunction with standardized, objective metrics for image quality, produce consistent, repeatable results using live human subjects to evaluate the quality of pictures taken using today’s camera phones.

This Technical Forum will:

• Detail the innovative developments of the CPIQ Initiative Group to date
• Provide insight into the measurement and testing methods and philosophies developed by CPIQ
• Explore the importance and application of subjective testing in determining image quality
• Offer insight into the specific objective metrics and methods being published by CPIQ
• Provide a look into the future and final outcome of CPIQ – the Consumer Image Quality Rating System

Agenda Details

Download a zip file of all the Tech Forum presentations here, otherwise click on the below session title or speaker for the presentation of your choice.

Welcome & Opening
Lisa Walker

What is CPIQ Delivering Now?
Larry Scarff

• What has CPIQ accomplished so far?
• What is unique about CPIQ

Here and Now: CPIQ Methods & Findings
Nicolas Touchard, Jim Clark, Jonathan Phillips

• What are CPIQ’s Objective Image Evaluation testing philosophy and methodologies?
• How can Subjective Image Evaluation methods and metrics be implemented in a standardized way

Image Performance Metrics – Five Leading Indicators of Quality
Larry Scarff, Don Williams, Nicolas Touchard, Jonathan Phillips

• Acutance: Spatial Frequency Response (SFR)
• Color Uniformity
• Lens Chromatic Aberrations (LCA)
• Geometric Accuracy: Lens Distortion
• Texture and Detail Measurements: A Work in progress

On the Horizon: What's Ahead for CPIQ & How You Can Be Involved
Moderated by Larry Scarff, Lisa Walker

• What are the plans for Phase 3? – What additional metrics will be developed?
• What does the industry and its consumers really need?
• Value and requirements for a Consumer Rating system – is it feasible and desirable?
• How can I get involved?