SURF: Speeded Up Robust Features - PowerPoint PPT Presentation

1 / 23
About This Presentation
Title:

SURF: Speeded Up Robust Features

Description:

SURF: Speeded Up Robust Features SIFT ... – PowerPoint PPT presentation

Number of Views:580
Avg rating:3.0/5.0
Slides: 24
Provided by: TKS9
Category:

less

Transcript and Presenter's Notes

Title: SURF: Speeded Up Robust Features


1
SURF Speeded Up Robust Features
  • ???? ?????

2
????
  • SIFT
  • ?????????????????????
  • ????????
  • SURF
  • ?????????????

3
SURF??????
  • 1.???
  • ??????(???)???
  • ??????
  • 2.???
  • ?????????
  • ??????

4
  • 1.???

5
?????
  • Integral Image???
  • Hessian?????box filters???

6
Integral Image
  • ??????????????????
  • ??
  • ?????????
  • ??????????

7
?????
  • ???????(???)
  • ????????
  • ?????????????
  • ??????????

8
??????
  • xy?????????????
  • xy???????????????????
  • xy?????????????

9
Hessian??
  • Hessian-based
  • Lyy?y??2???
  • ???

Lyy
10
Hessian??????????
  • ???

??????????
11
box filters?????
  • Hessian-based
  • Lyy?y??2???
  • ???

Lyy
Dyy

0.9???????
12
box filters
13
????????
??????????9 x 9, 15 x 15, 21 x 21, 27 x
27 ????????1.2, 2.0, 2.8, 3.6???
14
????
  • 26?????????????

?????????
15
  • 2.???

16
?????????
  • ??????????????????????????????????
  • ???6s????
  • Haar-Wavelet(4s????)???
  • SIFT??????????
  • ????60?
  • ??????????????
  • ??????????

17
?????
16??4??64??
18
???????????
19
????????(1/2)
?????72?
?????63?
???????
OpenCV1.1
20
????????(2/2)
?????13?
?????32?
???????
OpenCV1.1
21
????
  • SIFT????????????????????
  • Integral Image???
  • Hessian?????box filters???

22
(No Transcript)
23
Integral Image
  • ??????????????????
  • ????????
  • ??I(x, y)
  • ????ii(x, y)

24
??????????
  • ????????????????????????????
  • ??
  • ?????????
  • ??????????
Write a Comment
User Comments (0)
About PowerShow.com