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<p>学习在树莓派4B上通过命令行配置各个模块。官方文档：<a href="https://www.raspberrypi.org/documentation/" rel="external nofollow" target="_blank">docs</a>。</p>
<a id="more"></a>
<p>打开配置窗口</p>
<p><code>sudo raspi-config</code></p>
<p>可以通过这个配置窗口打开摄像机模块</p>
<h1 id="换源"><a href="#换源" class="headerlink" title="换源"></a>换源</h1><figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">sudo -s</span><br><span class="line">echo -e "deb http://mirrors.ustc.edu.cn/raspbian/raspbian/ stretch main contrib non-free rpi \n deb-src http://mirrors.ustc.edu.cn/raspbian/raspbian/ stretch main contrib non-free rpi" > /etc/apt/sources.list</span><br><span class="line">exit</span><br><span class="line">sudo apt update && sudo apt -y upgrade</span><br></pre></td></tr></table></figure>
<h1 id="更新库"><a href="#更新库" class="headerlink" title="更新库"></a>更新库</h1><figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">sudo apt-get update</span><br><span class="line">sudo apt-get upgrade</span><br><span class="line">sudo apt full-upgrade</span><br></pre></td></tr></table></figure>
<h1 id="安装-BerryConda"><a href="#安装-BerryConda" class="headerlink" title="安装 BerryConda"></a>安装 BerryConda</h1><figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">wget https://github.com/jjhelmus/berryconda/releases/download/v2.0.0/Berryconda3-2.0.0-Linux-armv7l.sh</span><br><span class="line">chmod a+x Berryconda3-2.0.0-Linux-armv7l.sh</span><br><span class="line">./Berryconda3-2.0.0-Linux-armv7l.sh</span><br></pre></td></tr></table></figure>
<p>一路<code>ENTER</code>+<code>yes</code>就ok了。</p>
<p><code>source ~/.bashrc</code></p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">conda config --add channels https://mirrors.ustc.edu.cn/anaconda/pkgs/free/</span><br><span class="line">conda config --add channels https://mirrors.ustc.edu.cn/anaconda/pkgs/main/</span><br><span class="line">conda config --set show_channel_urls yes</span><br><span class="line">conda config --show</span><br></pre></td></tr></table></figure>
<h1 id="使用摄像机模块拍照"><a href="#使用摄像机模块拍照" class="headerlink" title="使用摄像机模块拍照"></a>使用摄像机模块拍照</h1><p>在终端使用命令<code>raspistill</code>，点击<a href="https://www.raspberrypi.org/documentation/usage/camera/raspicam/raspistill.md" rel="external nofollow" target="_blank">这里</a>查看详细API。</p>
<p><code>raspistill -o 路径/image.jpg -w 640 -h 480</code></p>
<p><code>raspistill -vf -hf -o cam2.jpg</code>这个可以指定水平和垂直翻转图像</p>
<p>录像的命令是<code>raspivid</code>，点击<a href="https://www.raspberrypi.org/documentation/usage/camera/raspicam/raspivid.md" rel="external nofollow" target="_blank">这里</a>查看详细API，比如</p>
<p><code>raspivid -o 路径/video.h264</code></p>
<p>如要录制<code>.mp4</code>格式，需要先安装MP4BOX：</p>
<p><code>sudo apt install -y gpac</code></p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">#</span><span class="bash"> Capture 30 seconds of raw video at 640x480 and 150kB/s bit rate into a pivideo.h264 file:</span></span><br><span class="line">raspivid -t 30000 -w 640 -h 480 -fps 25 -b 1200000 -p 0,0,640,480 -o pivideo.h264</span><br><span class="line"><span class="meta">#</span><span class="bash"> Wrap the raw video with an MP4 container:</span></span><br><span class="line">MP4Box -add pivideo.h264 pivideo.mp4</span><br><span class="line"><span class="meta">#</span><span class="bash"> Remove the <span class="built_in">source</span> raw file, leaving the remaining pivideo.mp4 file to play</span></span><br><span class="line">rm pivideo.h264</span><br></pre></td></tr></table></figure>
<h2 id="使用python拍照"><a href="#使用python拍照" class="headerlink" title="使用python拍照"></a>使用python拍照</h2><p>创建一个<code>.py</code>文件。</p>
<p>安装<code>picamera</code>：</p>
<figure class="highlight shell"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">pip install picamera</span><br><span class="line"><span class="meta">#</span><span class="bash"> If you wish to use the classes <span class="keyword">in</span> the picamera.array module <span class="keyword">then</span> specify the “array” option <span class="built_in">which</span> will pull <span class="keyword">in</span> numpy as a dependency:</span></span><br><span class="line">pip install "picamera[array]"</span><br><span class="line">sudo pip install -U picamera # 更新</span><br></pre></td></tr></table></figure>
<p>下面是我写的一个测试各项功能的脚本：</p>
<figure class="highlight python"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br><span class="line">100</span><br><span class="line">101</span><br><span class="line">102</span><br><span class="line">103</span><br><span class="line">104</span><br><span class="line">105</span><br><span class="line">106</span><br><span class="line">107</span><br><span class="line">108</span><br><span class="line">109</span><br><span class="line">110</span><br><span class="line">111</span><br><span class="line">112</span><br><span class="line">113</span><br><span class="line">114</span><br><span class="line">115</span><br><span class="line">116</span><br><span class="line">117</span><br><span class="line">118</span><br><span class="line">119</span><br><span class="line">120</span><br><span class="line">121</span><br><span class="line">122</span><br><span class="line">123</span><br><span class="line">124</span><br><span class="line">125</span><br><span class="line">126</span><br><span class="line">127</span><br><span class="line">128</span><br><span class="line">129</span><br><span class="line">130</span><br><span class="line">131</span><br><span class="line">132</span><br><span class="line">133</span><br><span class="line">134</span><br><span class="line">135</span><br><span class="line">136</span><br><span class="line">137</span><br><span class="line">138</span><br><span class="line">139</span><br><span class="line">140</span><br><span class="line">141</span><br><span class="line">142</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> os</span><br><span class="line"><span class="keyword">from</span> time <span class="keyword">import</span> sleep</span><br><span class="line"><span class="keyword">from</span> picamera <span class="keyword">import</span> PiCamera, Color</span><br><span class="line"></span><br><span class="line">BASE_FOLD = <span class="string">'./'</span></span><br><span class="line"></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Cam</span><span class="params">(object)</span>:</span></span><br><span class="line"></span><br><span class="line"> <span class="function"><span class="keyword">def</span> <span class="title">__init__</span><span class="params">(self, camera, path=<span class="string">'./'</span>, alpha=<span class="number">0</span>)</span>:</span></span><br><span class="line"> <span class="string">'''</span></span><br><span class="line"><span class="string"> params:</span></span><br><span class="line"><span class="string"> camera: PiCamera</span></span><br><span class="line"><span class="string"> alpha: the degree of transparency, [0, 255]</span></span><br><span class="line"><span class="string"> '''</span></span><br><span class="line"> self.camera = camera</span><br><span class="line"> self.path = path</span><br><span class="line"> self.create_date_folder()</span><br><span class="line"> self.alpha = alpha</span><br><span class="line"> self.start()</span><br><span class="line"></span><br><span class="line"> <span class="function"><span class="keyword">def</span> <span class="title">create_date_folder</span><span class="params">(self)</span>:</span></span><br><span class="line"> <span class="string">'''</span></span><br><span class="line"><span class="string"> 创建存放图片和视频的文件夹</span></span><br><span class="line"><span class="string"> '''</span></span><br><span class="line"> <span class="keyword">if</span> <span class="keyword">not</span> os.path.exists(self.path+<span class="string">'images'</span>):</span><br><span class="line"> os.makedirs(self.path+<span class="string">'images'</span>)</span><br><span class="line"> <span class="keyword">if</span> <span class="keyword">not</span> os.path.exists(self.path+<span class="string">'vedios'</span>):</span><br><span class="line"> os.makedirs(self.path+<span class="string">'vedios'</span>)</span><br><span class="line"></span><br><span class="line"> <span class="function"><span class="keyword">def</span> <span class="title">start</span><span class="params">(self, alpha=<span class="number">-1</span>)</span>:</span></span><br><span class="line"> <span class="keyword">if</span> alpha<<span class="number">0</span>:</span><br><span class="line"> alpha = self.alpha</span><br><span class="line"> self.camera.start_preview(alpha=alpha)</span><br><span class="line"></span><br><span class="line"> <span class="function"><span class="keyword">def</span> <span class="title">close</span><span class="params">(self)</span>:</span></span><br><span class="line"> self.camera.stop_preview()</span><br><span class="line"></span><br><span class="line"> <span class="function"><span class="keyword">def</span> <span class="title">review</span><span class="params">(self, time)</span>:</span></span><br><span class="line"> <span class="string">'''</span></span><br><span class="line"><span class="string"> 检视</span></span><br><span class="line"><span class="string"> params:</span></span><br><span class="line"><span class="string"> time: sleep time</span></span><br><span class="line"><span class="string"> rot: rotation angle, within [0, 90, 180, 270, 360]</span></span><br><span class="line"><span class="string"> '''</span></span><br><span class="line"> sleep(time)</span><br><span class="line"></span><br><span class="line"> <span class="function"><span class="keyword">def</span> <span class="title">capture</span><span class="params">(self, time, name)</span>:</span></span><br><span class="line"> <span class="string">'''</span></span><br><span class="line"><span class="string"> 拍摄单张图片</span></span><br><span class="line"><span class="string"> '''</span></span><br><span class="line"> sleep(time)</span><br><span class="line"> self.camera.capture(self.path+<span class="string">f'images/<span class="subst">{name}</span>.jpg'</span>)</span><br><span class="line"></span><br><span class="line"> <span class="function"><span class="keyword">def</span> <span class="title">capture_batch</span><span class="params">(self, time, name, n)</span>:</span></span><br><span class="line"> <span class="string">'''</span></span><br><span class="line"><span class="string"> 连续拍照</span></span><br><span class="line"><span class="string"> '''</span></span><br><span class="line"> <span class="keyword">for</span> i <span class="keyword">in</span> range(n):</span><br><span class="line"> self.capture(time, name=name+<span class="string">f'-<span class="subst">{i}</span>'</span>)</span><br><span class="line"></span><br><span class="line"> <span class="function"><span class="keyword">def</span> <span class="title">record</span><span class="params">(self, time, name)</span>:</span></span><br><span class="line"> <span class="string">'''</span></span><br><span class="line"><span class="string"> 录制视频</span></span><br><span class="line"><span class="string"> '''</span></span><br><span class="line"> self.camera.start_recording(self.path+<span class="string">f'vedios/<span class="subst">{name}</span>.h264'</span>)</span><br><span class="line"> sleep(time)</span><br><span class="line"> self.camera.stop_recording()</span><br><span class="line"></span><br><span class="line"> <span class="function"><span class="keyword">def</span> <span class="title">set_camera_attrs</span><span class="params">(self, d)</span>:</span></span><br><span class="line"> <span class="string">'''</span></span><br><span class="line"><span class="string"> 批量设置相机属性</span></span><br><span class="line"><span class="string"> '''</span></span><br><span class="line"> <span class="comment"># self.close()</span></span><br><span class="line"> <span class="keyword">for</span> k, v <span class="keyword">in</span> d.items():</span><br><span class="line"> self.set_camera_attr(k, v)</span><br><span class="line"> <span class="comment"># self.start()</span></span><br><span class="line"></span><br><span class="line"> <span class="function"><span class="keyword">def</span> <span class="title">set_camera_attr</span><span class="params">(self, k, v)</span>:</span></span><br><span class="line"> <span class="string">'''</span></span><br><span class="line"><span class="string"> 设置相机某个属性</span></span><br><span class="line"><span class="string"> '''</span></span><br><span class="line"> setattr(self.camera, k, v)</span><br><span class="line"> </span><br><span class="line"> <span class="function"><span class="keyword">def</span> <span class="title">traverse_effects</span><span class="params">(self, time, name)</span>:</span></span><br><span class="line"> <span class="string">'''</span></span><br><span class="line"><span class="string"> 遍历图像特效</span></span><br><span class="line"><span class="string"> '''</span></span><br><span class="line"> <span class="keyword">for</span> effect <span class="keyword">in</span> self.camera.IMAGE_EFFECTS:</span><br><span class="line"> self.camera.image_effect = effect</span><br><span class="line"> self.camera.annotate_text = <span class="string">"Effect: %s"</span> % effect</span><br><span class="line"> self.capture(time, name+<span class="string">'-'</span>+str(effect))</span><br><span class="line"> self.camera.image_effect = <span class="string">'none'</span></span><br><span class="line"> self.camera.annotate_text = <span class="string">''</span></span><br><span class="line"></span><br><span class="line"> <span class="function"><span class="keyword">def</span> <span class="title">traverse_exposure_mode</span><span class="params">(self, time, name)</span>:</span></span><br><span class="line"> <span class="string">'''</span></span><br><span class="line"><span class="string"> 遍历曝光模式</span></span><br><span class="line"><span class="string"> '''</span></span><br><span class="line"> <span class="keyword">for</span> exposure_mode <span class="keyword">in</span> self.camera.EXPOSURE_MODES:</span><br><span class="line"> self.camera.exposure_mode = exposure_mode</span><br><span class="line"> self.camera.annotate_text = <span class="string">"Exposure Mode: %s"</span> % exposure_mode</span><br><span class="line"> self.capture(time, name+<span class="string">'-'</span>+str(exposure_mode))</span><br><span class="line"> self.camera.exposure_mode = <span class="string">'auto'</span></span><br><span class="line"> self.camera.annotate_text = <span class="string">''</span></span><br><span class="line"></span><br><span class="line"> <span class="function"><span class="keyword">def</span> <span class="title">traverse_white_balance</span><span class="params">(self, time, name)</span>:</span></span><br><span class="line"> <span class="string">'''</span></span><br><span class="line"><span class="string"> 遍历白平衡模式</span></span><br><span class="line"><span class="string"> '''</span></span><br><span class="line"> <span class="keyword">for</span> awb_mode <span class="keyword">in</span> self.camera.AWB_MODES:</span><br><span class="line"> self.camera.awb_mode = awb_mode</span><br><span class="line"> self.camera.annotate_text = <span class="string">"Write Balamce: %s"</span> % awb_mode</span><br><span class="line"> self.capture(time, name+<span class="string">'-'</span>+str(awb_mode))</span><br><span class="line"> self.camera.awb_mode = <span class="string">'auto'</span></span><br><span class="line"> self.camera.annotate_text = <span class="string">''</span></span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="function"><span class="keyword">def</span> <span class="title">run</span><span class="params">()</span>:</span></span><br><span class="line"> camera_config={</span><br><span class="line"> <span class="string">'rotation'</span>: <span class="number">180</span>, <span class="comment"># rotation angle, within [0, 90, 180, 270, 360]</span></span><br><span class="line"> <span class="string">'resolution'</span>: (<span class="number">800</span>, <span class="number">600</span>), <span class="comment"># The maximum resolution is 2592×1944 for still photos, and 1920×1080 for video recording. The minimum resolution is 64×64.</span></span><br><span class="line"> <span class="string">'framerate'</span>: <span class="number">15</span>,</span><br><span class="line"> <span class="string">'annotate_text'</span>: <span class="string">"Hello world!"</span>, </span><br><span class="line"> <span class="string">'annotate_text_size'</span>: <span class="number">50</span>, <span class="comment">#[6, 160], default 32</span></span><br><span class="line"> <span class="string">'annotate_background'</span>: Color(<span class="string">'blue'</span>),</span><br><span class="line"> <span class="string">'annotate_foreground'</span>: Color(<span class="string">'red'</span>),</span><br><span class="line"> <span class="string">'brightness'</span>: <span class="number">50</span>, <span class="comment"># 亮度 [0, 100], default 50</span></span><br><span class="line"> <span class="string">'contrast'</span>: <span class="number">0</span> <span class="comment"># 对比度</span></span><br><span class="line"> }</span><br><span class="line"> camera = Cam(PiCamera(), path=BASE_FOLD)</span><br><span class="line"> camera.set_camera_attrs(camera_config)</span><br><span class="line"> camera.review(<span class="number">2</span>)</span><br><span class="line"> camera.capture(<span class="number">2</span>, <span class="string">'test_capture'</span>)</span><br><span class="line"> camera.capture_batch(<span class="number">2</span>, <span class="string">'test_capture_batch'</span>, <span class="number">4</span>)</span><br><span class="line"> camera.record(<span class="number">2</span>, <span class="string">'test_record'</span>)</span><br><span class="line"> camera.traverse_effects(<span class="number">2</span>, <span class="string">'test_traverse_effects'</span>)</span><br><span class="line"> camera.traverse_exposure_mode(<span class="number">2</span>, <span class="string">'test_traverse_exposure_mode'</span>)</span><br><span class="line"> camera.traverse_white_balance(<span class="number">2</span>, <span class="string">'test_traverse_white_balance'</span>)</span><br><span class="line"> camera.close()</span><br><span class="line"></span><br><span class="line"><span class="keyword">if</span> __name__ == <span class="string">"__main__"</span>:</span><br><span class="line"> run()</span><br></pre></td></tr></table></figure>
<p>更多复杂操作，请看官方<a href="https://picamera.readthedocs.io/en/release-1.13/recipes1.html" rel="external nofollow" target="_blank">API文档</a>。</p>
<h1 id="GPIO"><a href="#GPIO" class="headerlink" title="GPIO"></a>GPIO</h1><p>这个库好像是用来与树莓派的引脚进行交互的。</p>
<h1 id="参考"><a href="#参考" class="headerlink" title="参考"></a>参考</h1><ol>
<li><a href="https://blog.csdn.net/xuzhexing/article/details/99404943" rel="external nofollow" target="_blank">树莓派 更换国内源，安装vim，berryconda，opencv</a></li>
</ol>
</div>
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<div style="text-align:center;color: #ccc;font-size:14px;">-------------本文结束<i class="fa fa-heart"></i>感谢您的阅读-------------</div>
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<p><span>本文标题:</span><a href="/raspverry4b.html">记录在树莓派4B上的配置命令</a></p>
<p><span>文章作者:</span><a href="/" title="访问 Keavnn 的个人博客">Keavnn</a></p>
<p><span>发布时间:</span>2020年04月24日 - 21:04</p>
<p><span>最后更新:</span>2020年04月25日 - 10:04</p>
<p><span>原始链接:</span><a href="/raspverry4b.html" title="记录在树莓派4B上的配置命令">http://StepNeverStop.github.io/raspverry4b.html</a>
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