Title page for ETD etd-08092012-040013

Type of Document Master's Thesis
Author Brown, Roger Owen
URN etd-08092012-040013
Title Effects of grid lattice geometry on digital image filtering
Degree Master of Science
Department Civil Engineering
Advisory Committee
Advisor Name Title
Johnson, Steven D. Committee Co-Chair
Kottman, Clifford Committee Co-Chair
McEwen, Robert B. Committee Member
Scoop, David S. Committee Member
  • Image processing
Date of Defense 1989-04-05
Availability unrestricted
The spatial distribution of discrete sample points from an image affect digital image manipulation.

The geometries of the grid lattice and edge are described for digital images. Edge detecting digital filters are considered gor segmenting an image. A comparison is developed between digital filters for two different digital image grid lattice geometries -- 8-neighbor grid lattice (rectangular tesselation) and the 6-neighbor grid lattice (hexagonal tesselation). Digital filters for discrete images are developed that are best approximations to the Laplacian operator applied to continuous two—dimensional mathematical surfaces. Discrepancies between the calculated Laplacian and the digital filtering results are analyzed and a criterion is developed that compares grid lattice effects. The criterion shows that digital filtering in a 6-neighbor grid lattice is preferable to digital filtering in an 8-neighbor grid lattice.

  Filename       Size       Approximate Download Time (Hours:Minutes:Seconds) 
 28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access 
  LD5655.V855_1989.B767.pdf 6.06 Mb 00:28:04 00:14:26 00:12:37 00:06:18 00:00:32
[BTD] next to an author's name indicates that all files or directories associated with their ETD are accessible from the Virginia Tech campus network only.

Browse All Available ETDs by ( Author | Department )

dla home
etds imagebase journals news ereserve special collections
virgnia tech home contact dla university libraries

If you have questions or technical problems, please Contact DLA.