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Mathematica Data Analysis
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When a photo is added to a social networking website, there is an option to tag friends who are depicted in it. This is done with the help of a face detection function. Using the FindFaces Mathematica function, you can implement a similar feature in your applications. The input parameter of the function is the image and the output parameters are the coordinates of all the rectangles that show the people's faces:

Pay attention to the /@ record, which refers to a short form of the Map[f,expr] function that applies f to each element in the first level of expr. For example, the f /@ {a, b, c, d, e} result is a list of f function applications for each of these parameters: {f[a], f[b], f[c], f[d], f[e]}.

In this example, the FindFaces function has detected multiple faces in a photo and the HighlightImage function made it possible to highlight these faces directly in the photo.
Take into account the Rectangle @@@ FindFaces[fam] record—it is a shortened version of the Apply...
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