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"FacialGender" (Built-in Classifier)

Predict what gender a face appears to be.

Classes

Details

  • The classifier is applied to the largest face found in the image.
  • The classifier is based on the MobileNet Model Trained on UTKFace Large-Scale Face Dataset.
  • The classifier may download resources that will be stored in your local object store at $LocalBase, and that can be listed using LocalObjects[] and removed using ResourceRemove.

Examples

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Basic Examples  (2)

Determine the gender of a person:

Wolfram Language code: Classify["FacialGender", [image]]

Obtain the probabilities for the possible classes:

Wolfram Language code: Classify["FacialGender", [image], "Probabilities"]

Obtain a ClassifierFunction for this classifier:

Wolfram Language code: c = Classify["FacialGender"]

Use the classifier function to find the gender of an example:

Wolfram Language code: c[[image]]

Find the gender of many examples at once:

Wolfram Language code: c[{[image], [image]}]

Scope  (2)

Find faces in an image:

Wolfram Language code: img = [image]; faces = ImageTrim[img, #]& /@ FindFaces[img]

Use the classifier on each face:

Wolfram Language code: Classify["FacialGender", faces]

For images with many faces, the "FacialGender" classifier selects the largest face automatically:

Wolfram Language code: Classify["FacialGender"][img]

Load the ClassifierFunction corresponding to the built-in classifier:

Wolfram Language code: c = Classify["FacialGender"]

Obtain the possible classes using Information:

Wolfram Language code: Information[c, "Classes"]

Options  (3)

ClassPriors  (1)

Use a custom ClassPriors for the possible outputs:

Wolfram Language code: Classify["FacialGender", [image], ClassPriors -> <|"Female" -> 0.5, "Male" -> 0.5|>]

IndeterminateThreshold  (1)

Use a custom IndeterminateThreshold:

Wolfram Language code: Classify["FacialGender", [image], IndeterminateThreshold -> 0.999]

UtilityFunction  (1)

Obtain the utility function of the classifier:

Wolfram Language code: utility = Information[Classify["FacialGender"], "UtilityFunction"]

Modify this utility function to penalize "Male" being classified as "Female":

Wolfram Language code: utility["Female", "Male"] = -100000;

Classify an image using this new utility:

Wolfram Language code: Classify["FacialGender", [image], UtilityFunction -> utility]

Compare to the result with the default utility:

Wolfram Language code: Classify["FacialGender", [image]]