last workshop…
DESCRIPTION
Last Workshop…. ImageJ basics Image manipulation Setting scale Making measurements Counting particles. Today’s Plan…. Advanced Image Analysis Working with “stacks” Where to get images Finding existing images Creating your own images Online exercises SimpleScience.org. Stacks. - PowerPoint PPT PresentationTRANSCRIPT
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Last Workshop…
• ImageJ basics– Image manipulation– Setting scale– Making measurements– Counting particles
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Today’s Plan…
• Advanced Image Analysis– Working with “stacks”
• Where to get images– Finding existing images– Creating your own images
• Online exercises– SimpleScience.org
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Stacks
• A collection of multiple images packaged together into a single computer file
• Think of a deck of cards– X & Y dimensions are spatial– Z dimension can be:
• Spatial (depth)• Temporal (time - video)• Spectral (color)
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Online Image Archives
• http://www.goes.noaa.gov/• http://www.osei.noaa.gov/• http://www.nwas.org/committees/rs/nwasat.html• http://glovis.usgs.gov/• http://images.jsc.nasa.gov/• http://serc.carleton.edu/NAGTWorkshops/visuali
zation/collections/imagearchives.html
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Creating Your Own Image Stacks
• Most any camera can be used to create scientifically useful images– Still– Video
• In most cases, Z dimension will be time
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Still Cameras
• Whenever possible, use tripod• Digital images have date/time stamps• Stacks can be built up manually in ImageJ
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Joe PowChester F. Carlson Center for Imaging Science
Rochester Institute of Technology