# 扫描

{% hint style="info" %}
提示**:** 不同的扫描类型会产生不同的数据种类, 点云和模型的数据格式也会不同, 模型是带有纹理的三角网格, 而点云就只有单纯的3D点.
{% endhint %}

<figure><img src="/files/5o3nvKpP0ZXIlWFp80Fk" alt=""><figcaption><p>扫描类型选择</p></figcaption></figure>

**点云:** 以点云的方式记录3D数据, 不会生成三角网格, 可以导出Obj, Ply, Bin, XYZ等格式.

**户型:** 户型是RoomPlan扫描, 可将户型扫描后到处USDZ格式, 适合生成室内户型图数据.

**模型:** 模型扫描会实时生成三角网格, 扫描过程中可以实时看到网格法向颜色, 法向颜色代表扫描表面平整程度, 可根据提示尽量把目标扫描完整了, 模型扫描结果可以导出带纹理的Obj, glTF格式.\
\ <img src="/files/WjQt04Ebuve9fPMuPaic" alt="" data-size="line">     **距离设置:** 扫描距离范围是0.4m->5.0m, 默认是3m, 您可以根据自己需要来修改最远扫描距离.\ <img src="/files/PBOULKqKb1uHc5Di3kco" alt="" data-size="line"> **扫描分辨率:** 扫描分辨率是指体素大小, 是指空间里最小的格子大小. 分辨率范围是5mm->30mm, 越小代表越精细, 但内存占用也比较高, 越大的细节越粗但适合扫描大范围数据.&#x20;

{% hint style="info" %}
提示: 如果设置的分辨率很小, 如5mm, 然后扫描距离设置的很远, 如5m, 将会占用非常大内存, 可能扫描不了多大范围就会终止扫描, 甚至会导致App崩溃.
{% endhint %}


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