885 lines
27 KiB
HTML
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885 lines
27 KiB
HTML
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<meta name="description" content="Bioxel Nodes is a Blender add-on for scientific volumetric data visualization.">
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Bioxel Nodes Docs
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入门
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中文
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English
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正在初始化搜索引擎
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OmooLab/BioxelNodes
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快速开始
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Bioxel Nodes Docs
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OmooLab/BioxelNodes
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<h1 id="_1">入门</h1>
|
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<h2 id="1">1. 下载数据</h2>
|
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<p>下载并解压到文件夹中 <a href="https://drive.google.com/file/d/1bBGpt5pQ0evr-0-f4KDNRnKPoUYj2bJ-/view?usp=drive_link">VHP_M_CT_Head.zip</a><br />
|
||
数据来自 <a href="https://www.nlm.nih.gov/research/visible/visible_human.html">Visible Human Project (VHP)</a>这是一个男性头部的 CT 扫描图像</p>
|
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<h2 id="2">2. 导入为「数据层」</h2>
|
||
<p>给立方体添加几何节点,并打开几何节点界面侧边栏。切换到 Bioxel Nodes 分页(1),点击 Import Data 按钮(2),在文件选择对话框中,选择数据文件夹中任意一个<code>.dcm</code>文件(3),点击 Import Data 按钮(4)</p>
|
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<p><img alt="" src="../assets/import-data.png" /></p>
|
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<p>依次会弹出两个对话框,都点击 OK 按钮,等待数据导入(可查看 Blender 界面右下角状态栏的进度条)成功后可以看到 Bioxel Nodes 侧边栏多了数据预览画面。点击下方的 Add 按钮(1),鼠标移动到节点面板,放置 <strong>O Layer</strong> 节点(2)</p>
|
||
<p><img alt="" src="../assets/add-o-layer.png" /></p>
|
||
<p>数据的导入就完成啦👍</p>
|
||
<p>数据缓存在主目录里,以「数据层(Layer)」形式添加在 Blender 文件中,「数据层」通过 <strong>O Layer</strong> 节点装载到几何节点。它们的关系如下:</p>
|
||
<p>数据缓存 -> 数据层 -> O Layer</p>
|
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<h2 id="3">3. 提取并渲染「结构体」</h2>
|
||
<p>对「数据层」的操作通过 O Bioxel 系列几何节点完成。</p>
|
||
<p>我们需要额外两个节点,<strong>O Cutout by Threshold</strong> 和 <strong>O Realize Structure</strong> 节点(它们都在节点菜单,Add > O Bioxel > Structure 下),并按下图连接:</p>
|
||
<p><img alt="" src="../assets/connect-nodes.png" /></p>
|
||
<p>如果成功,可以看到视图中出现了灰色的头部。接下来我们调整节点参数:</p>
|
||
<ul>
|
||
<li><strong>O Layer</strong>:勾选 Center,取消 Resample</li>
|
||
<li><strong>O Cutout by Threshold</strong>:Threshold 设置为 90</li>
|
||
<li><strong>O Realize Structure</strong>:Density 设置为 40,勾选 Surface</li>
|
||
</ul>
|
||
<p>调整物体转向、灯位置,设置渲染器为 Cycles,最终效果如下图:</p>
|
||
<p><img alt="" src="../assets/adjust-nodes.png" /></p>
|
||
<p>这样我们就完成了头部 CT 数据的体积渲染👍</p>
|
||
<p>简单捋一下执行逻辑,「数据层」先被剪出(Cutout)为「结构体」。「结构体」顾名思义就是负责储存生物组织结构的对象,但它本身数据类型是体积,并不能直接被看到。需要 <strong>O Realize Structure</strong> 来呈现「结构体」</p>
|
||
<h2 id="4">4. 另存数据缓存(可选)</h2>
|
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<p>由于数据缓存只是以链接形式保存在 Blender 文件中,所以只传递 Blender 文件给其他设备,会导致「数据层」遗失缓存。点击 Bioxel Nodes 分页中 Save 按钮,选择数据缓存的另存位置来管理缓存资源。</p>
|
||
<p>就像图片一样,传递时把数据缓存和 Blender 文件一起发送。</p>
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