How to detect cheek from face detection?

Using eyes, mouth and nose as reference point, how can i detect the position of cheek from a human face image?

Answer 1

[darova]

Try intersection of an eye and nose

See the scheme

[Matlab Newbie]

hi thank you, but how do i impelement this into coding? do you have any idea on this?

[darova]

What about this

I0 = imread('image.png');
eye = [118 42];
nose= [75 80];
cheek = [eye(1) nose(2)];
imshow(I0)
hold on
plot(eye(1),eye(2),'or','linew',3)
plot(nose(1),nose(2),'or','linew',3)
plot(cheek(1),cheek(2),'ob','linew',3)
hold off

[Matlab Newbie]

the detection is on the head and only towards the left but it should be detecting both sides of cheeks. i think its almost there... thank you for your time and effort

[darova]

Can you accept the answer?

[Matlab Newbie]

Possible for you to explain the code to me? so that i canfind a way to make it perfect as it is not detecting the cheeks

[darova]

honestly i can't, it's already as clear as possible. Maybe you have some questions?

[Matlab Newbie]

eye = [118 42];

How did you obtain this value? and it is referring to both side of eyes?

cheek = [eye(1) nose(2)] what is the meaning of this? what does it do?

sorry, i am extremely new to matlab and image processing.

[darova]

• How did you obtain this value?

You said that you have points (coordinates of nose and eyes). I created some simple picture in paint and use cursor to find coordinates of eyes and nose

• and it is referring to both side of eyes?

No, it's only one eye

• cheek = [eye(1) nose(2)] what is the meaning of this? what does it do?

It takes X coordinate of eye and Y coordinate of nose. Simply intersection of horizontal and vertical lines

[Matlab Newbie]

thats great...thank you!