March 2019
Intermediate to advanced
312 pages
7h 37m
English
Content preview from Hands-On Robotics Programming with C++
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Programming logic for smile recognition
The programming logic for smile recognition is similar to eye detection, and we will also write the smile-recognition program inside the face-detection for loop. To program smile recognition, follow these steps:
- Load the smile CascadeClassifier:
CascadeClassifier smileDetector("haarcascade_smile.xml");
- We need to detect the mouth region, which is inside the face region. The face region is again our region of interest, and to find the face region from the video feed, use will use the following command:
Mat faceroi = videofeed(face[f]);
- Declare a smile variable, which is a vector of the Rect type. Then, use the detectMultiScale function. In the detectMultiScale function, min neighbors is set to ...