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Image analysis

### Program Information

Name: Image analysis
Domain: Machine learning
Functionality: face recognition
Input: a: an image file
Output: Face(a): the faces detected in the image file

#### Reference


Metamorphic Relations for Enhancing System Understanding and Use
https://dx.doi.org/10.1109/TSE.2018.2876433


### MR Information

#### MR1------

Description:
Property: change the direction of the x-axis of the image to create a mirror image, and the symmetry is that a mirror image of a face is still a face
Source input: $a_{s}$
Source output: $Faces(a_{s})$
Follow-up input: $a_{f}$
Follow-up output: $Faces(a_{f})$
Input relation: $a_{f}$ is the flipped copy of $a_{s}$
Output relation: $Faces(a_{s})=Faces(a_{f})$
Pattern: symmetry, change direction
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