de- rotating face
DESCRIPTION
De- rotating face. - Procedure Eye detection and mouth detection Measuring angle of face Rotating the face back to upright frontal position. EyemapC. High Cb and low Cr values are found the eyes(EyemapC). EyemapL. Eye contains both dark and bright pixels in the luminance component(EyemapL). - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: De- rotating face](https://reader036.vdocument.in/reader036/viewer/2022062501/56815c9b550346895dcaa636/html5/thumbnails/1.jpg)
De- rotating face
- Procedure1) Eye detection and mouth detection2) Measuring angle of face3) Rotating the face back to upright
frontal position
![Page 2: De- rotating face](https://reader036.vdocument.in/reader036/viewer/2022062501/56815c9b550346895dcaa636/html5/thumbnails/2.jpg)
![Page 3: De- rotating face](https://reader036.vdocument.in/reader036/viewer/2022062501/56815c9b550346895dcaa636/html5/thumbnails/3.jpg)
EyemapC
High Cb and low Cr values are found the eyes(EyemapC)
rr
r
brb
CofnegativetheCwhere
C
CCCEyeMapC
:~
,
,~
3
1 22
![Page 4: De- rotating face](https://reader036.vdocument.in/reader036/viewer/2022062501/56815c9b550346895dcaa636/html5/thumbnails/4.jpg)
EyemapL
Eye contains both dark and bright pixels in the luminance component(EyemapL)
22
2/12
),(
1),(
1),(,
1),(),(
),(),(
yxyxR
R
RyxR
yxgwhere
yxgyxY
yxgyxYEyeMapL
![Page 5: De- rotating face](https://reader036.vdocument.in/reader036/viewer/2022062501/56815c9b550346895dcaa636/html5/thumbnails/5.jpg)
Eyemap
Eyemap=(EyeMapC)AND(EyeMapL) ->Normalize Eyemap to the range [0,255]
![Page 6: De- rotating face](https://reader036.vdocument.in/reader036/viewer/2022062501/56815c9b550346895dcaa636/html5/thumbnails/6.jpg)
Construction of eye map
![Page 7: De- rotating face](https://reader036.vdocument.in/reader036/viewer/2022062501/56815c9b550346895dcaa636/html5/thumbnails/7.jpg)
MouthMap
The color of mouth region contains more red component and less blue component than other facial region.
Hence, Cr>Cb
222 )(b
rrr C
CCCMouthMap
![Page 8: De- rotating face](https://reader036.vdocument.in/reader036/viewer/2022062501/56815c9b550346895dcaa636/html5/thumbnails/8.jpg)
Construction of the mouth map
![Page 9: De- rotating face](https://reader036.vdocument.in/reader036/viewer/2022062501/56815c9b550346895dcaa636/html5/thumbnails/9.jpg)
Test
![Page 10: De- rotating face](https://reader036.vdocument.in/reader036/viewer/2022062501/56815c9b550346895dcaa636/html5/thumbnails/10.jpg)
Locating Eyes
![Page 11: De- rotating face](https://reader036.vdocument.in/reader036/viewer/2022062501/56815c9b550346895dcaa636/html5/thumbnails/11.jpg)
Locating mouth and rotating
![Page 12: De- rotating face](https://reader036.vdocument.in/reader036/viewer/2022062501/56815c9b550346895dcaa636/html5/thumbnails/12.jpg)
Extracting face part
![Page 13: De- rotating face](https://reader036.vdocument.in/reader036/viewer/2022062501/56815c9b550346895dcaa636/html5/thumbnails/13.jpg)
Result
![Page 14: De- rotating face](https://reader036.vdocument.in/reader036/viewer/2022062501/56815c9b550346895dcaa636/html5/thumbnails/14.jpg)
More result
![Page 15: De- rotating face](https://reader036.vdocument.in/reader036/viewer/2022062501/56815c9b550346895dcaa636/html5/thumbnails/15.jpg)
More results
![Page 16: De- rotating face](https://reader036.vdocument.in/reader036/viewer/2022062501/56815c9b550346895dcaa636/html5/thumbnails/16.jpg)
Advantages
Fast to get result (1.7 seconds) It can be related to face detection.
![Page 17: De- rotating face](https://reader036.vdocument.in/reader036/viewer/2022062501/56815c9b550346895dcaa636/html5/thumbnails/17.jpg)
Further study
Better lightening compensate techniques is required->Very sensitive to lightening problems
Different method to measure angle -> Eyes can’t always be detected.(Sunglasse
s, small eyes, closed eyes, etc)