About testing SDK about Face recognition:
First. Update face recognition image.
Second. Select the picture.
Note： 1) Pictures name should be xxxx.bmp.
2)Pictures resolution should be 344*440 or 172*220
Third. Enable face recognition.
It will return picture name if the recognition is successful.
There are two ways to check face recognition failed:
Check if the human face is accurately aligned with the camera via video file.
Look at the recognition level of Hisilicon log, it will be successfully identified above 0.6.