1. Clarify the idea, select a method to complete the system, because opencv is a set of open source API library about computer vision, there are many methods can be used to study facial expression recognition.<br>2. The first step of facial expression recognition system, data acquisition, for opencv, is image, face detection and recognition.<br>3. In the preprocessing stage, the acquired data are preprocessed so that they can be input into the convolution neural network, which needs a fixed size.<br>4. Feature selection<br>5. Classifier design and training<br>6. Expression classification<br>
正在翻译中..