Applied color processing Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/pz50h022r

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • The quality of a digital image pipeline relies greatly on its color reproduction which should at a minimum handle the color constancy, and the final judgment of the excellence of the pipeline is made through subjective observations by humans. This dissertation addresses a few topics surrounding the color processing of digital image pipelines from a practical point of view. Color processing fundamentals will be discussed in the beginning to form a background understanding for the topics that follow.A memory color assisted illuminant estimation algorithm is then introduced after a review of memory colors and some modeling techniques. Spectral sensitivity of the camera is required by many color constancy algorithms but such data is often not readily available. To tackle this problem, an alternative method to the spectral characterization for color constancy parameter calibration is proposed. Hue control in color reproduction can be of great importance especially when memory colors are concerned. A hue constrained matrix optimization algorithm is introduced to address this issue, followed by a psychophysical study to systematically arrive at a recommendation for the optimized preferred color reproduction. At the end, a color constancy algorithm for high dynamic range scenes observing multiple illuminants is proposed.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Keyword
Subject
Rights Statement
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Laura Wilson(laura.wilson@oregonstate.edu) on 2012-01-04T22:57:10Z (GMT) No. of bitstreams: 1 ZhangHeng2011.pdf: 3359785 bytes, checksum: 235b5ef4e3d638a0ec78cf953ca8b45f (MD5)
  • description.provenance : Made available in DSpace on 2012-01-04T22:57:10Z (GMT). No. of bitstreams: 1 ZhangHeng2011.pdf: 3359785 bytes, checksum: 235b5ef4e3d638a0ec78cf953ca8b45f (MD5) Previous issue date: 2011-11-29
  • description.provenance : Approved for entry into archive by Julie Kurtz(julie.kurtz@oregonstate.edu) on 2012-01-04T21:59:56Z (GMT) No. of bitstreams: 1 ZhangHeng2011.pdf: 3359785 bytes, checksum: 235b5ef4e3d638a0ec78cf953ca8b45f (MD5)
  • description.provenance : Submitted by Heng Zhang (zhanghen@onid.orst.edu) on 2011-12-19T18:23:11Z No. of bitstreams: 1 ZhangHeng2011.pdf: 3359785 bytes, checksum: 235b5ef4e3d638a0ec78cf953ca8b45f (MD5)

Relationships

In Administrative Set:
Last modified: 08/19/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items