OpenMV人脸识别

实验结果：

程序代码：

import sensor, time, image, pyb

led = pyb.LED(3)

sensor.reset()

sensor.set_contrast(1)

sensor.set_gainceiling(16)

sensor.set_framesize(sensor.HQVGA)

sensor.set_pixformat(sensor.GRAYSCALE)

face_cascade = image.HaarCascade("frontalface", stages=25)

print(face_cascade)

clock = time.clock()

while (True):

    clock.tick()

    img = sensor.snapshot()

    objects = img.find_features(face_cascade, threshold=0.75, scale_factor=1.25)

    for r in objects:

        img.draw_rectangle(r)

        led.on()            #亮灯

        time.sleep(150)     #延时150ms

        led.off()           #暗灯

        time.sleep(100)

    print(clock.fps())