Example explanation 16-Codes->qrcodes_with_lens_corr QR code example

Video tutorial 15 - Scan code recognition: https://singtown.com/learn/50017/
# 二维码例程
#
# 这个例子展示了OpenMV Cam使用镜头校正来检测QR码的功能(请参阅qrcodes_with_lens_corr.py脚本以获得更高的性能)。
import sensor, image, time

sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QVGA)
sensor.skip_frames(time = 2000)
sensor.set_auto_gain(False)  # 必须关闭此功能,以防止图像冲洗…
clock = time.clock()

while(True):
    clock.tick()
    img = sensor.snapshot()
    img.lens_corr(1.8) # 1.8的强度参数对于2.8mm镜头来说是不错的。
    for code in img.find_qrcodes():
        img.draw_rectangle(code.rect(), color = (255, 0, 0))
        print(code)
    print(clock.fps())

Singtown Technology OpenMV official Chinese document function explanation:

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