中文翻译
语法为：pcd_viewer <file_name 1..N> .pcd <options>
选项是：
-bc r，g，b =背景颜色
-fc r，g，b =前景色
-ps X =点大小（1..64）
-opaque X =渲染点云不透明度（0..1）
-ax n =启用XYZ轴的屏幕显示并将其缩放到n
-ax_pos X，Y，Z =如果启用轴，则在空间中设置其X，Y，Z位置（默认为0,0,0）
-cam（*）=使用给定的摄像机设置作为初始视图
（*）[剪切范围/焦点/位置/视图上限/距离/窗口大小/窗口位置]或使用包含相同信息的<filename.cam>。
-multiview 0/1 =启用/禁用自动多视口渲染（默认禁用）
-normals 0 / X =禁用/启用每个第X点的曲面法线显示为线（默认为禁用）
-normals_scale X =将正常单位矢量大小调整为X（默认值为0.02）
-pc 0 / X =禁用/启用每个X点的主曲率显示为线（默认禁用）
-pc_scale X =将主曲率向量大小调整为X（默认值为0.02）
（注意：对于多个.pcd文件，提供多个 - {fc，ps}参数;它们将自动分配给正确的文件）
英文原文
Syntax is: pcd_viewer <file_name 1..N>.pcd <options>
where options are:
-bc r,g,b = background color
-fc r,g,b = foreground color
-ps X = point size (1..64)
-opaque X = rendered point cloud opacity (0..1)
-ax n = enable on-screen display of XYZ axes and scale them to n
-ax_pos X,Y,Z = if axes are enabled, set their X,Y,Z position in space (default 0,0,0)
-cam (*) = use given camera settings as initial view
(*) [Clipping Range / Focal Point / Position / ViewUp / Distance / Window Size / Window Pos] or use a <filename.cam> that contains the same information.
-multiview 0/1 = enable/disable auto-multi viewport rendering (default disabled)
-normals 0/X = disable/enable the display of every Xth point's surface normal as lines (default disabled)
-normals_scale X = resize the normal unit vector size to X (default 0.02)
-pc 0/X = disable/enable the display of every Xth point's principal curvatures as lines (default disabled)
-pc_scale X = resize the principal curvatures vectors size to X (default 0.02)
(Note: for multiple .pcd files, provide multiple -{fc,ps} parameters; they will be automatically assigned to the right file)