Camera Phone Image Quality

1
Camera Phone Image Quality
2
CPIQ Objectives

• Create standardized metrics, test methods and
  tools for measuring and comparing camera phone
  image quality
• Identify essential set of metrics that most
  affect camera phone image quality
• Develop repeatable subjective test methods to
  validate calibrate the objective metrics
• Tools (software)
• Targets
• Ultimately deliver a simple to use, clear,
  consumer-facing rating system
• Implement a logo certification program

3
Progress

• Phase 1 work delivered white paper
• describes fundamental attributes that contribute
  to camera phone image quality associated
  measurement techniques.
• Phase 2 defined a pilot set of specific
  validated objective and subjective test metrics
  methods for measuring CPIQ attributes
• provides specific tools and validated test
  methods to facilitate standards based
  communication and comparison among carriers,
  handset manufacturers and component vendors on
  imaging performance.
• Spatial Frequency Response (SFR) characterization
• Color Uniformity assessment
• Geometric Distortion
• Lateral Chromatic Aberration
• Subjective Testing methodology

4
Whats Next?

• Phase 3 Plan

• Phase 3 Metrics

• Essential Set
• Texture/Blur
• Noise
• Color (consistency WB)
• Speed / Sensitivity
• Dynamic Range
• Luminance Shading
• Resolution
• Exposure
• Possible additional metrics
• Veiling Glare, Stray Light/Flare Ghosts
• Color (preference reproduction)
• Motion Blur
• Depth of Field
• Particles / Dust / Blemishes
• Tone Reproduction

• Phase 3 develop additional metrics, test
  procedures required to translate and distill into
  a consumer oriented image-quality rating system
  for camera phones.
• A logo certification program will be implemented.

5
Whats Unique?

• Were developing metrics with mobile device
  specific requirements and use cases.
• No one has ever attempted to correlate objective
  image performance metrics with standardized
  subjective testing methods.
• We have developed a subjective test method and
  validated results from the objective metrics to
  enable engineers to tune image performance to
  consumer preferences.

6
I3A Initiatives Market Driven

• Small groups of members
• Flexible, fast results
• Incubator for formal standards
• Market driven
• serve commercial needs
• Adhoc, formed to achieve specific objectives

• Groups work is confidential to the group
  Strategic
• members only until published
• IGs work facilitated supported by password
  protected
• work group website
• Protected by I3A IP policy

7
Initiative Process

• Step 1 Idea document describes concept, why
  its good for the industry the IG members.
  Approval by Management committee (MC Strategic
  members)
• Step 2 Work Plan describes specific goals,
  deliverables, schedule, budget. Approved by MC.
• Open Enrollment Approx. 60 day period where new
  companies may join IG. Then door closes.
• Step 3 Development completion of
  deliverables. Approval by MC.
• Step 4 Publish and promote results. I3A PR and
  marketing resources used to promote adoption.

8
I3A Initiative IP Policy

• All Initiative group members must agree and
  follow
• Designed to eliminate submarine IP
• Members state their intentions for their IP
• A) license under RAND terms
• B) license royalty free
• C) NO license offered
• Not required to reveal specific IP

9
I3A Membership Levels
10
Thank you

• Questions?
• Contact Noel Mareno
• [phone]
• noelm_at_i3a.org