به نام خدا. Isfahan University of Technology Electrical and Computer Department. Master Thesis of Computer Engineering Artificial Intelligence and Robotic. Image alignment and stitching using Object Recognition Methods. By: Navid Einackchi. Supervisors: Dr Rasoul Amirfattahi
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به نام خدا
Isfahan University of Technology
Electrical and Computer Department
Master Thesis of Computer Engineering Artificial Intelligence and Robotic
Image alignment and stitching using Object Recognition Methods
By: Navid Einackchi
Supervisors: Dr Rasoul Amirfattahi
Dr javad Askari
Advisor: Dr M. Saraee
Spring 2007
Some slides are from other sources
تصوير حاصل
Error Function
Error Function
؟
Using Corresponding points
Plain
No changes in every direction
Edge
High changes in Edge Direction
Corner
High changes in every direction
Fast change Direction
(max)1/2
Slow change direction
(min)1/2
Edge2 >> 1
2
“Corner”1,2both big1 ~ 2
Edge1 >> 2
Plain
1
2
“Edge”
R < 0
“Corner”
R > 0
Local Maximum bigger than Threshold
“Plain”
“Edge”
R small
R < 0
1
Threshold
R
R
x
x
Scale Invariant
Finding Appropriate Window Size

=
Window thst maximize filter
مقیاس
DoG
y
x
DoG
Bulb position
Scale position
2p
0
O(n4 m4)
Angle
Scale
3469
2255
از مرتبهO(n2 m2)
Applied Rotation
Applied Scale
Estimated Scale
Estimated Rotation
Direction
Direction
Scale
Scale
O(nm)
O(n)
Maximum
Maximum
Using 3NN method
Using threshold method
Applied Scale
Applied Rotation
Estimated Rotation
Estimated Scale
Thanks
Questions?