March 2019
Intermediate to advanced
312 pages
7h 37m
English
Content preview from Hands-On Robotics Programming with C++
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Recognizing a smile
After detecting the eyes from the face region, let's write the program to recognize a smiling face. The webcam will recognize a smiling face when it detects a black-white-black line feature around the mouth, that is, the upper and lower lip are generally a bit darker compared to the teeth region: