Aula 9 - Analise de Operações - Góes - Aula do dia 140515.pdf
140515 andrew kuo
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Transcript of 140515 andrew kuo
Classification of rice grain in digital images using morphological
and color features Presenter: Andrew Kuo
Advisor: Yan-Fu Kuo Date: 2014.05.15
Department of Bio-industrial Mechatronics Engineering, National Taiwan University, Taiwan, R.O.C.
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OutlineIntroduction
• rice grain structure
• research objective
• procedure
Materials & Methods
• image acquisition
• feature quantification
Future work
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Rice grain structureRice seed
• rice grain with hull
Brown rice
• rice grain without hull
White rice
• rice without hull, bran and germ
germ
white rice
bran
hull
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Objective
To quantify the morphological and color features of rice seed
To gather different kinds of rice seed that have similar features in clusters based on morphological and color features
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Procedure
image acquisition
rice seed preparation
feature quantification
clustering
analysis & illustrate
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Image acquisition
Equipment
Fusion
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Image acquisition -Equipment
Canon 450D
Adaptor
Microscope
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Canon 450D
adaptor
microscope
Image acquisition -Equipment
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Canon 450D
- CMOS APS-C
- 4272 * 2848 pixel
- EF-s lens mount
-ISO 100 to 1600
adaptor
microscope
Image acquisition -Equipment
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Canon 450D
Adaptor
Microscope
Image acquisition -Equipment
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Canon 450D
Adaptor
Microscope
Image acquisition -Equipment
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Canon 450D
Adaptor
Microscope
- objective len 2X
Image acquisition -Equipment
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Canon 450D
Adaptor
Microscope
Image acquisition -Equipment
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Image acquisition -Fusion
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Feature quantification
Coefficient of Fourier descriptor
Geometrical features
Color feature
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Chain code
Feature quantification -coefficient of Fourier descriptor
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Chain code
Feature quantification -coefficient of Fourier descriptor
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0005676644422123
Assuming that the chain code is followed at constant speed, the time needed to traverse a particular link ai, is
Feature quantification -coefficient of Fourier descriptor
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The changes in the x, y projections of the chain as the link ai are traversed
Feature quantification -coefficient of Fourier descriptor
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The projections on x and y of the first p links of the chain are
Feature quantification -coefficient of Fourier descriptor
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The Fourier series expansion for the x and y projection of the chain code of the complete contour are defined as
Feature quantification -coefficient of Fourier descriptor
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Area
Perimeter
Major diameter
Aspect ratio
Feature quantification -geometrical features
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Area
Perimeter
Major diameter
Aspect ratio
Feature quantification -geometrical features
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Area
Perimeter
Major diameter
Aspect ratio
Feature quantification -geometrical features
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Area
Perimeter
Major diameter
Aspect ratio
Feature quantification -geometrical features
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major diameter
minor diam
eter
Area
Perimeter
Major diameter
Aspect ratio
Feature quantification -geometrical features
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major diameter
minor diam
eter
Feature quantification -color feature
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mapping function
Future work
Acquire images of 360 kinds of rice grain
Describe the contour of the grain in Fourier descriptor
Extract the color information from the raw files
Gather different kinds of rice seed in clusters based on morphological and color features
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Thanks for your attention!
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