Face recognition and image normalization

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Artyom
Artyom 2014-11-6
评论： Image Analyst 2016-7-8
How can I normalize image to align the eyes with a horizontal line.
EyeDetect = vision.CascadeObjectDetector('EyePairBig');
I = imread('1.jpg');
BB=step(EyeDetect,I);
As I understand I can rotate image by imrotate , but I need to know angle of the rotation.

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Dima Lisin
Dima Lisin 2014-11-6
If (x1,y1) is the center of the first eye, and (x2, y2) is the center of the second eye, then (y2 - y1) / (x2 - x1) is the tangent of the angle between the line connecting the two centers and the horizontal. You can get the angle using atan2(y2-y1, x2-x1).
  2 个评论
chinnurocks
chinnurocks 2016-7-8
How to get centre points of the eyes... automatically... I mean without using the data cursor manually ?
Image Analyst
Image Analyst 2016-7-8
Segment out the eyes, then use regionprops().

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Image Analyst
Image Analyst 2014-11-6
Be sure to see the Mathworks Webinar on Face detection/recognition on Nov. 13, 2014: Click Here

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