![](https://csdnimg.cn/release/download_crawler_static/89327381/bg1.jpg)
Hamdi Boukamcha
http://matlab-recognition-code.com
19/05/2024
Hamdi Boukamcha
![](https://csdnimg.cn/release/download_crawler_static/89327381/bg2.jpg)
Quantify faces by parameters specifying their
shape and texture.
To recognize faces across a wide range of
illumination conditions.
Face recognition needs to be achieved across
variations in pose.
19/05/2024
Hamdi Boukamcha
![](https://csdnimg.cn/release/download_crawler_static/89327381/bg3.jpg)
Model Intrinsic and Extrinsic parameters separately.
Estimate 3D Shape of faces to store information of all
poses.
Computer Graphics Simulation of Illumination and
other Extrinsic parameters.
19/05/2024
Hamdi Boukamcha
![](https://csdnimg.cn/release/download_crawler_static/89327381/bg4.jpg)
Estimate the Intrinsic Parameters
Estimate the Extrinsic Parameters
Use a Cost Function to find the nearest
neighbor face in the Database.
19/05/2024
Hamdi Boukamcha
![](https://csdnimg.cn/release/download_crawler_static/89327381/bg5.jpg)
A face is represented by 2 vectors:
S
0
=(x
1
, y
1
, z
1
, ……………..x
n
, y
n
, z
n
)
T
T
0
=(R
1
, G
1
, B
1
, ……………..R
n
, G
n
, B
n
)
T
where:
pixel at (x
k
, y
k
, z
k
) have colors (R
k
, G
k
, B
k
).
S
0
is known as the shape vector.
T
0
is known as the texture vector.
• To make calculations easier, we will use cylindrical
coordinates where (x
k
, y
k
, z
k
) is equivalent to (h
k
, f
k
,
r(h
k
,f
k
)).
19/05/2024
Hamdi Boukamcha