显示页面修订记录反向链接回到顶部 本页面只读。您可以查看源文件,但不能更改它。如果您觉得这是系统错误,请联系管理员。 ====== 树莓派AI套件图像识别说明 ====== <html> <body lang=ZH-CN link="#0563C1" vlink="#954F72" style='word-wrap:break-word; text-justify-trim:punctuation'> <div class=WordSection1 style='layout-grid:15.6pt'> <p class=MsoNormal><span style='font-size:16.0pt;font-family:宋体'>在使用图像识别功能之前,需要先注册百度</span><span lang=EN-US style='font-size:16.0pt'>AI</span><span style='font-size:16.0pt; font-family:宋体'>账号。可以参考下面的方法来注册:</span></p> <p class=MsoNormal><span lang=EN-US style='font-size:16.0pt'><a href="https://www.weeemake.com.cn/wiki/doku.php?id=wm_wiki:raspberry_pi_baidu_account"><span lang=EN-US style='font-family:宋体;text-decoration:none'><span lang=EN-US>百度账密<span lang=EN-US>获<span lang=EN-US>取方法</span></span></span></span></a></span></p> <p class=MsoNormal><span style='font-size:16.0pt;font-family:宋体'>参考例程是注册免费的账号,调用的次数有所限制,有需要的用户可以申请付费调用。</span></p> <p class=MsoNormal><span style='font-size:16.0pt;font-family:宋体'>注册好账号后,会自动生成一个</span><span lang=EN-US style='font-size:16.0pt'>API Key</span><span style='font-size:16.0pt; font-family:宋体'>和</span><span lang=EN-US style='font-size:16.0pt'>Secret Key</span><span style='font-size:16.0pt;font-family:宋体'>,把这</span><span lang=EN-US style='font-size:16.0pt'>2</span><span style='font-size:16.0pt;font-family: 宋体'>串符号填入对应的</span><span lang=EN-US style='font-size:16.0pt'>weeecode</span><span style='font-size:16.0pt;font-family:宋体'>积木块中。</span></p> <p class=MsoNormal align=center style='text-align:center'><span lang=EN-US><img border=0 width=438 height=91 id="图片 1" src="树莓派AI套件图像识别说明.files/image001.jpg"></span></p> <p class=MsoNormal><span style='font-size:16.0pt;font-family:宋体'>按照“树莓派</span><span lang=EN-US style='font-size:16.0pt'>AI</span><span style='font-size:16.0pt; font-family:宋体'>套件语音识别说明”中说明的那样,在保证树莓派已经连接</span><span lang=EN-US style='font-size:16.0pt'>wifi</span><span style='font-size:16.0pt;font-family: 宋体'>或有线的网络情况下,点击这个积木块,百度的账号信息就会输入到树莓派中,如果账号不变,只需要输入一次,树莓派就会记住,以后不需要重复输入。</span></p> <p class=MsoNormal><span style='font-size:16.0pt;font-family:宋体'>做好以上工作后,就可以开始正式操作了。</span></p> <p class=MsoNormal><span style='font-size:16.0pt;font-family:宋体'>第一步。插上</span><span lang=EN-US style='font-size:16.0pt'>usb</span><span style='font-size:16.0pt; font-family:宋体'>摄像头。摄像头最好插在树莓派</span><span lang=EN-US style='font-size:16.0pt'>usb3.0</span><span style='font-size:16.0pt;font-family:宋体'>接口上(</span><span lang=EN-US style='font-size:16.0pt'>usb2.0</span><span style='font-size:16.0pt;font-family: 宋体'>内部内是黑色的,</span><span lang=EN-US style='font-size:16.0pt'>usb3.0</span><span style='font-size:16.0pt;font-family:宋体'>内部是蓝色的)。</span></p> <p class=MsoNormal align=center style='text-align:center'><span lang=EN-US><img border=0 width=255 height=287 id="图片 4" src="树莓派AI套件图像识别说明.files/image002.png"></span></p> <p class=MsoNormal><span lang=EN-US style='color:blue'> </span></p> <p class=MsoNormal><span style='font-size:16.0pt;font-family:宋体'>第二步。编写程序,例程用以识别通用物体。程序原理是当板载按钮按下后开始识别,然后语音合成“请将摄像头对准物体”,随后树莓派会拍摄一张图片,最后把识别的结果播报出来。程序如下:</span></p> <p class=MsoNormal align=center style='text-align:center'><span lang=EN-US><img border=0 width=580 height=399 src="树莓派AI套件图像识别说明.files/image003.png"></span></p> <p class=MsoNormal><span lang=EN-US> </span></p> <p class=MsoNormal><span style='font-size:16.0pt;font-family:宋体'>第三步。将摄像头对准需要识别的物体,距离最好在</span><span lang=EN-US style='font-size:16.0pt'>30cm</span><span style='font-size:16.0pt; font-family:宋体'>处,距离过远需要调整摄像头对焦,具体参考</span><span lang=EN-US style='font-size: 16.0pt;color:blue'><a href="https://www.weeemake.com.cn/wiki/doku.php?id=wm_wiki:raspberry_pi_peripherals"><span lang=EN-US style='font-family:宋体;text-decoration:none'><span lang=EN-US>树莓派基础配件说明</span></span></a></span><span style='font-size:16.0pt;font-family:宋体;color:blue'>。</span><span style='font-size:16.0pt;font-family:宋体'>拍摄期间最好保持稳定,不要抖动,否则可能会影响识别效果。</span></p> <p class=MsoNormal><span style='font-size:16.0pt;font-family:宋体'>第四步。点击程序上的绿色旗子,开始运行程序。</span></p> <p class=MsoNormal><span lang=EN-US style='font-size:16.0pt'> </span></p> <p class=MsoNormal><span style='font-size:16.0pt;font-family:宋体'>树莓派的图像识别中还包括人脸识别,这部分的识别是离线的,是在树莓派本地运行,需要百度账号和联网的。但目前识别效果一般,使用方法如下。</span></p> <p class=MsoNormal><span style='font-size:16.0pt;font-family:宋体'>人脸识别分为</span><span lang=EN-US style='font-size:16.0pt'>2</span><span style='font-size:16.0pt; font-family:宋体'>部分,首先需要建立记录人脸,然后再对比判断。</span></p> <p class=MsoNormal style='margin-left:0cm;text-indent:0cm'><span lang=EN-US style='font-size:16.0pt'>1、</span><span style='font-size:16.0pt;font-family: 宋体'>先拖出下图中的第一个积木块,填入编号。点击积木块前,将摄像头对准人脸。记录成功后积木块显示</span><span lang=EN-US style='font-size:16.0pt'>true</span><span style='font-size:16.0pt;font-family: 宋体'>。</span></p> <p class=MsoNormal style='margin-left:0cm;text-indent:0cm'><span lang=EN-US style='font-size:16.0pt'>2、</span><span style='font-size:16.0pt;font-family: 宋体'>将摄像头对准要对比的人脸,距离在</span><span lang=EN-US style='font-size:16.0pt'>30cm</span><span style='font-size:16.0pt;font-family:宋体'>左右比较好。然后点击下图中第二个积木块,返回</span><span lang=EN-US style='font-size:16.0pt'>true</span><span style='font-size:16.0pt; font-family:宋体'>时表明是对应编号的同一张脸,否则为</span><span lang=EN-US style='font-size:16.0pt'>false</span><span style='font-size:16.0pt;font-family:宋体'>。</span></p> <p class=MsoNormal align=center style='text-align:center'><span lang=EN-US><img border=0 width=563 height=304 id="图片 7" src="树莓派AI套件图像识别说明.files/image004.jpg"></span></p> <p class=MsoNormal><span style='font-size:16.0pt;font-family:宋体'>注:人脸一旦记录成功,将永远保留在树莓派中,不需要每一次都记录,除非需要更改。</span></p> <p class=MsoNormal><span style='font-size:16.0pt;font-family:宋体'>可以记录多张人脸,但记录越多,对比的时间会越长。</span></p> <p class=MsoNormal><span lang=EN-US style='font-size:16.0pt'> </span></p> <p class=MsoNormal><span style='font-size:16.0pt;font-family:宋体'>这篇说明以及上一篇说明(树莓派</span><span lang=EN-US style='font-size:16.0pt'>AI</span><span style='font-size:16.0pt; font-family:宋体'>套件语音识别说明),都是用在线的方式运行,如果想离线运行,用生成代码图标,然后下载到扩展板即可。</span></p> <p class=MsoNormal><span style='font-size:16.0pt;font-family:宋体'>离线运行需要注意,树莓派启动需要</span><span lang=EN-US style='font-size:16.0pt'>30</span><span style='font-size:16.0pt; font-family:宋体'>秒左右,而树莓派扩展板启动在</span><span lang=EN-US style='font-size:16.0pt'>1s</span><span style='font-size:16.0pt;font-family:宋体'>左右,只有等树莓派完全启动并播报</span><span lang=EN-US style='font-size:16.0pt'>IP</span><span style='font-size:16.0pt; font-family:宋体'>地址后,发送的指令才有效,所以建议在播报</span><span lang=EN-US style='font-size: 16.0pt'>IP</span><span style='font-size:16.0pt;font-family:宋体'>后复位一下扩展板扩展在程序最开始处延迟</span><span lang=EN-US style='font-size:16.0pt'>30</span><span style='font-size:16.0pt; font-family:宋体'>秒以上。</span></p> </div> </body> </html>