<big>万人血书要求取消Wiki验证码！</big>
建议老师移动一下页面，现在的页面名“第一组”日后非常容易引起冲突
== 小组成员 ==
* 游旅-航院航72<br />* 陈亦心-美院美710<br />* 杨博琳-美院美710<br />* 康秋彦-美院美710<br />* 李姜帆-自动化自64<br />* [[User:FUcreature|蔡东龙-化学62]]
== 实验记录 ==
=== PYNQ+USB摄像头人脸识别 ===
:1. 启动PYNQ板，连接Jupyter Notebook，打开<code>examples/opencv_face_detect_webcam.ipynb</code>文件。
* 注意到有一些代码被注释了：
<pre>
#Step 2: Initialize Webcam and HDMI Out
# monitor configuration: 640*480 @ 60Hz
#from pynq.drivers import HDMI
from pynq.drivers.video import VMODE_640x480
#hdmi_out = HDMI('out', video_mode=VMODE_640x480)
#hdmi_out.start()
</pre>
<pre>
#Step 3: Display webcam image via HDMI Out
if (ret):
frame_1080p = np.zeros((1080,1920,3)).astype(np.uint8)
frame_1080p[0:480,0:640,:] = frame_vga[0:480,0:640,:]
#hdmi_out.frame_raw(bytearray(frame_1080p.astype(np.int8).tobytes()))
else:
raise RuntimeError("Failed to read from camera.")
</pre>
<pre>
# Step 6: Show results on HDMI output
# Output OpenCV results via HDMI
frame_1080p[0:480,0:640,:] = frame_vga[0:480,0:640,:]
#hdmi_out.frame_raw(bytearray(frame_1080p.astype(np.int8).tobytes()))
</pre>
<pre>
# Step 8: Release camera and HDMI
videoIn.release()
#hdmi_out.stop()
#del hdmi_out
</pre>