Title page for ETD etd-11142012-040111

Type of Document Master's Thesis
Author Hu, Guang-hua
URN etd-11142012-040111
Title Extending the depth of focus using digital image filtering
Degree Master of Science
Department Electrical Engineering
Advisory Committee
Advisor Name Title
Pieper, Ronald J. Committee Chair
Claus, Richard O. Committee Member
Poon, Ting-Chung Committee Member
  • Image processing
Date of Defense 1987-04-15
Availability restricted

Two types of image processing methods capable of forming a composite image from a set of image slices which have in-focus as well as out-of-focus segments are discussed. The first type is based on space domain operations and has been discussed in the literature. The second type, to be introduced, is based on the intuitive concept that the spectral energy distribution of a focused object is biased towards lower frequencies after blurring. This approach requires digital image filtering in the spatial frequency domain. A comparison among methods of both types is made using a quantitative üdelity criterion.

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