dddi: distance diagnostics through digital imaging catherine davis, ciids project manager
DESCRIPTION
WHAT IS DDDI? Distance Diagnostics through Digital Imaging A web site that connects people with agricultural problems to scientists at the University of Georgia.TRANSCRIPT
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DDDI: Distance Diagnostics through Digital Imaging
Catherine Davis, CIIDS Project Manager
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WHAT IS DDDI?A Few Definitions…
• Distance- a far-off place, a place or position far away, or not very close
• Diagnostic- identifying, or used in identifying, the nature or cause of an illness, disorder, or problem
• Digital Images- basically pictures. In the case of DDDI, pictures come from cameras or cameras on microscopes
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WHAT IS DDDI?
• Distance Diagnostics through Digital Imaging
• A web site that connects people with agricultural problems to scientists at the University of Georgia.
![Page 4: DDDI: Distance Diagnostics through Digital Imaging Catherine Davis, CIIDS Project Manager](https://reader036.vdocuments.us/reader036/viewer/2022062401/5a4d1b247f8b9ab0599967c6/html5/thumbnails/4.jpg)
How does DDDI work?
• Agricultural producers contact a Cooperative Extension Agent about their problem.
• The Agent examines the problem and if the Agent cannot diagnose it, they can submit information and images through the system to experts at The University of Georgia.
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How does DDDI work?
• Once the information is submitted, the sample is sent to the diagnostician who makes a diagnosis and sends comments and recommendations back to the Cooperative Extension Agent
• The Agent then shares the diagnosis, comments, and recommendations to the agricultural producer
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What do you need for DDDI?
• A computer with Internet access• Imaging equipment:
– Compound microscope– Dissecting microscope– A camera to capture images from the field or
the microscopes
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What can DDDI be used for?
• Animal Science• Plant Pathology• Aquaculture• Insects• Crop and Soil Science• Forestry• Horticulture
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Examples of DDDI Images
Animal Science
Mites from a bird
Skin fungus warts caused by a virus.
Foal with malformed forelegs
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Examples of DDDI Images
Plant Pathology
These images show the damage on a head of cabbage and the microscopic view of the spores inside the lesion on the cabbage head.
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Examples of DDDI Images
Aquaculture
These slides are good because they indicate the size of the sample in relation to another common object (hands, a penny, a ruler)
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Examples of DDDI Images
Insects
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Examples of DDDI Images
Crop and Soil Science
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Examples of DDDI Images
Forestry
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Examples of DDDI Images
Horticulture
These slides are a good examples of going from an images of the whole sample to magnification of the samples.
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A trinocular dissecting microscope(stereoscope)
A stereo dissecting microscope is normally used to view relatively large specimens at magnifications from about 5X to about 50X.
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Magnification zoom-control
Focus control
Focus and magnification can be varied to produce the best view of a specimen
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A trinocular compound microscope
“Compound” means having multiple objective lenses mounted on a rotating turret (lens holder)
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Focusing the microscope on specimen slides can be accomplished with a coarse adjustment control for rapid adjustment, and a fine control for small adjustments, particularly
necessary at high magnification levels.
Coarse control
Fine control
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The “mechanical stage” holds specimen slides and allows them to be moved precisely under objective
lenses to focus on any area of interest.
Stage positioning
controls
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Place a sample slide on the microscope stage under the lowest power objective lens.