3D Solve

3D Solve

This tab’s settings come into play after 2D Tracking has been completed, i.e., Tracks with paths have been created. 3D positions have to be calculated based on these Tracks using numerous complex algorithms (which we fortunately don’t have to adjust ourselves). For this process, the user supplies useful information with regard to the recording camera and the type of scenery that will be reconstructed.

这个选项卡的设置在2 d 跟踪完成后开始运行，也就是说，路径已经创建。3D 位置必须根据这些轨迹计算，使用许多复杂的算法(幸运的是，我们不必自己调整)。对于这个过程，用户提供有用的信息，关于记录相机和类型的风景，将重建。

Clicking on the Run 3D Solver button will reconstruct the 3D environment with various features (Null objects) that represent the Tracks in 3D space.

点击 Run 3D Solver 按钮将重建具有各种特征(Null 对象)的3D 环境，这些特征表示3D 空间中的轨迹。

Attention: The reconstruction settings on this page refer primarily to Camera Tracking. The reconstruction of object movements is done using the Object Tracker.

注意: 本页的重建设置主要涉及相机跟踪。目标运动的重建是使用目标跟踪器完成的。

Solve Mode

解决模式

This drop-down menu lets you select the method with which the footage was recorded, i.e., how the camera recorded the footage. This is something that the Motion Tracker doesn’t recognize automatically, which is why this menu is available.

这个下拉菜单可以让你选择录像的方法，也就是说，摄像机是如何记录录像的。这是运动跟踪器不能自动识别的东西，这就是为什么这个菜单是可用的。

Full 3D Reconstruction

全三维重建

This is the most commonly used method - the camera changes its position while recording and a parallax shift occurs with the recorded objects. This is an ideal situation for the Motion Tracker because it can easily reconstruct this type of 3D scenery.

这是最常用的方法-摄像机改变其位置，而记录的物体和视差移动发生。这是运动跟踪器的理想情况，因为它可以轻松地重建这种类型的3D 风景。

Nodal Pan

节盘

This is a special mode in which no recognizable parallax shift occurs. This is the case if the camera only rotates, without otherwise changing its position.

这是一种特殊的模式，其中没有可识别的视差移位发生。如果摄像机只是旋转，而没有改变其位置，就会出现这种情况。

The Motion Tracker cannot reconstruct distances from such footage, which means all Tracks will have the same distance from the camera. All features will be positioned on a spherical surface (diameter = 10m), with the camera at the center.

运动跟踪器不能从这些镜头重建距离，这意味着所有的轨道到摄像机的距离是一样的。所有特征将被定位在一个球面(直径 = 10米) ，与相机在中心。

Note that certain video sequences also fall in the category Nodal Pan even though, strictly speaking, they contain tracking shots. This is the case, for example, when landscapes are filmed. The hills/mountains on the horizon may have very slight parallax shifts but these can be ignored in relation to the camera movement. Nodal Pan is suited for footage that has no noticable parallax shift.

请注意，某些视频序列也属于 Nodal Pan 类别，尽管严格地说，它们包含跟踪镜头。例如，拍摄风景时就是这种情况。地平线上的山丘或山脉可能有非常轻微的视差移动，但这些移动与相机的运动有关，可以忽略不计。节点盘适用于没有明显视差移动的连续镜头。

Planar Track

平面轨道

Planar Track assumes that ALL Tracks, without exception, lie on a single plane, which can also move. This mode can be used when creating greenscreen footage to which elements such as matte paintings, videos, etc., will be added at marked locations on the green surface. This type of tracking can also be done using Cinema 4D. However, the camera reconstruction will in fact only reconstruct the camera and not the movement of the object (greenscreen) in the scene, i.e., the object movement will be simulated by the camera’s movement around the object. Only the camera’s movement relative to the greenscreen (the remaining parts of the scenery will not be included) will be calculated.

平面轨道假设所有轨道，无一例外，都在一个平面上，这个平面也可以移动。这种模式可以用于创建绿屏素材，其中元素，如哑光绘画，视频等，将添加到绿色表面的标记位置。这种类型的跟踪也可以使用 Cinema 4D 完成。然而，相机重建实际上只是重建相机，而不是场景中物体(绿幕)的运动，也就是说，物体的运动将由相机围绕物体的运动来模拟。只有相机的运动相对于绿屏(其余部分的风景将不包括在内)将被计算。

This mode only tracks the empty greenscreen, which means that the remaining parts of the scenery must be tracked using a different Motion Tracking mode. These must then be combined in the compositing phase.

这个模式只跟踪空的绿屏，这意味着剩下的部分的风景必须使用不同的运动跟踪模式跟踪。然后这些必须在合成阶段结合起来。

Note that the Focal Length and Sensor Size of the recording camera must be known when in this mode.

注意，在这种模式下，必须知道记录相机的焦距和传感器尺寸。

The Object Trackers, which is a real object reconstruction, can be used to differentiate the 3D object reconstruction from this mode.

物体追踪器，这是一个真实的物体重建，可以用来区分三维物体重建从这种模式。

Camera Settings

相机设置

This is where you enter information pertaining to the camera with which the footage was recorded. The more information you supply, the better the Motion Tracker can reconstruct the 3D camera. Therefore, it is well worth the time to ascertain this information for your reconstruction. Getting this information using the Motion Tracker itself or using the Camera Calibrator function is much more time-consuming and less precise.

您可以在这里输入与录制胶片的相机相关的信息。你提供的信息越多，运动跟踪器就能更好地重建3D 相机。因此，很值得花时间为你的重建确定这些信息。使用运动跟踪器本身或使用摄像机校准器功能获得这些信息更加耗时和精确。

Focal Length
Focal Length[1..10000]

焦距延长焦距[1. . 10000]

Unknown

未知

Use this option if you do not know the camera’s focal length.

如果您不知道相机的焦距，请使用此选项。

Unknown but Constant

未知但恒久不变

Use this option if the camera’s focal length is not known but the focal length itself remains constant (no zooming takes place). The Sensor Size setting does not play a role for this option (or with the previous option) with regard to the quality of the 3D reconstruction.

如果相机的焦距不确定，但焦距本身保持不变(不进行缩放) ，可以使用此选项。传感器大小设置不发挥作用的这个选项(或与先前的选项)的质量的三维重建。

Known and Constant

已知的和不变的

Select this option if the camera’s focal length and sensor size are known and the former doesn’t change throughout the footage (no zooming) and enter the known values in the Focal Length and Sensor Size fields, respectively.

如果相机的焦距和传感器大小是已知的，并且前者在整个镜头中没有改变(没有缩放) ，则选择此选项，并分别在焦距和传感器大小字段中输入已知值。

Note: DO NOT select this option if the focal length is known but the sensor size is not known. Doing so will result in a faulty reconstruction!

注意: 不要选择这个选项，如果焦距是已知的，但传感器的大小不知道。这样做将导致错误的重建！

Note that you can ascertain the camera’s focal length from individual frames of footage using the Camera Calibrator tag.

请注意，您可以确定相机的焦距从单独的镜头帧使用摄像机矫正标签。

This mode must also be used for geometry-assisted Object Tracking if no Camera Tracking was previously done. You must then also define an aperture length.

此模式也必须用于几何辅助的目标跟踪，如果没有相机跟踪以前完成。然后你还必须定义一个光圈长度。

Sensor Size (Film Gate)[1..2000]

感应器尺寸(胶片闸门)[1. . 2000]

Enter the sensor size of the camera that recorded the footage here. The sensor size for a specific camera can be obtained by conducting an online search. If the Known and Constant option is selected, the camera’s focal length must also be known! If one of the other two Focal Length options is selected, the sensor size is irrelevant with regard to the quality of the 3D reconstruction. The Sensor Size can also be modified after a reconstruction has been completed, whereby the reconstructed camera will automatically be updated accordingly (without having to perform the reconstruction again).

在这里输入记录视频的摄像机的传感器大小。特定相机的传感器尺寸可以通过在线搜索获得。如果已知常量选项被选中，相机的焦距也必须是已知的！如果另外两个焦距选项之一被选中，传感器的大小与三维重建的质量无关。传感器大小也可以修改后，重建已经完成，重建相机将自动更新相应(无需再次执行重建)。

35mm Equiv. Focal Length:
Field of View (Horizontal)[0.2..174°]
Field of View (Vertical)[0.2..174°]

35mm 等焦距: 视场(水平)[0.2.174 ° ]视场(垂直)[0.2.174 ° ]

These values primarily serve informational purposes. These values use the focal length and sensor size values as a foundation.

这些值主要用于提供信息。这些值使用焦距和传感器大小值作为基础。

Run 3D Solver

运行3D Solver

Click on this button to start the 3D reconstruction. This can be done after 2D Tracking has been completed.

点击这个按钮开始3D 重建。这可以在2D 跟踪完成后完成。

This function must be executed successfully in order for the Scene Reconstruction to work.

为了使场景重建工作顺利进行，必须成功地执行这个函数。

What happens when this button is clicked?

点击这个按钮会发生什么？

An attempt will be made to calculate a 3D position from each Track - some will be unsuccessful - and save features (represented by Null objects). This process can take some time to complete. The data will also be used to calculate the camera animation. Features will be listed as Child objects of the Motion Tracker in the Object Manager:

将尝试从每个轨道计算一个3D 位置-有些将不成功-并保存特征(由空对象表示)。这个过程需要一些时间才能完成。这些数据还将用于计算相机动画。特性将被列为对象管理器中运动跟踪器的子对象:

The image above shows the result of a successful reconstruction. In the Viewport you will have a vertex cluster colored from green to red. Each point is a feature and represents a position in 3D space for a 2D Track (the more green a point is, the more the Motion Tracker is convinced that this Track and feature are synchronized; red points are not necessarily bad or useless but are simply the worst in relation to the green points).

上面的图片显示了成功重建的结果。在视口中，你会看到一个顶点簇从绿色到红色。每个点都是一个特征，代表2D 轨迹在3D 空间中的一个位置(一个点越绿，运动跟踪器就越相信这个轨迹和特征是同步的; 红点不一定是坏的或无用的，只是相对于绿点而言是最坏的)。

The reconstructed, animated camera (see also Cameras and features created by the Motion Tracker) has a keyframe (key) for position, rotation and focal length at each frame of animation. These are precisely the camera parameters that can be calculated by a 3D construction. If you look through the camera and disable the Motion Tracker’s Keep in Foreground option (Footage tab) you will see how Tracks and features behave congruently as the camera moves. Now take a look at the Constraint-Tags, which takes a vertex cluster lying relatively loosely in 3D space and with no clear size and creates a 3D Project with defined axes and a defined origin.

重建，动画相机(也见相机和功能创建的运动跟踪)有一个关键帧(关键)的位置，旋转和焦距在每帧动画。这些都是可以通过3D 结构计算出来的精确的摄像机参数。如果你透过相机看，禁用运动跟踪器的保持在前景选项(胶片标签) ，你会看到轨道和功能的行为一致，因为相机的移动。现在看看 Constraint-Tags，它将一个顶点集群相对松散地放置在3D 空间中，并且没有明确的大小，然后创建一个具有定义轴和定义原点的3D 项目。

A reconstruction can also go awry, for example if too few and/or Tracks of poor quality are used for the calculation. This will be displayed in the status bar. As explained under What are good and bad Tracks?, you will have to manually create better Tracks and tracking. Also check the settings for the camera and footage type in the Reconstruction tab.

重建也可能出错，例如，如果计算使用的轨道太少和/或质量差。这将显示在状态栏中。正如在什么是好的和坏的轨道下解释？，你必须手动创建更好的轨道和跟踪。也检查相机和镜头类型的设置在重建标签。

It can also occur that only part of the footage is reconstructed due to an insufficient number of Tracks being present for the entire sequence. This will be evident in the insufficient number of camera keys.

它也可能发生，只有一部分的镜头是重建的，由于没有足够的轨道存在于整个序列。这将是显而易见的相机键数量不足。

Note that all features and camera keys pertaining to position, rotation and focal length (other camera settings will not be affected) will be deleted if 2D Tracks are modified AFTER 3D reconstruction. The Motion Tracker will assume that the 3D reconstruction was faulty and that it will be reconstructed after the Tracks are edited. This can be prevented by enabling the Lock Solved Data option.

请注意，所有的功能和相机键有关的位置，旋转和焦距(其他相机设置不会受到影响)将删除，如果2D 轨道后修改3D 重建。运动跟踪器将假设三维重建是错误的，并将重建后轨道编辑。可以通过启用 Lock Solved Data 选项来防止这种情况。

Lock Solved Data

解锁数据

Normally, nothing else will have to be modified on Tracks after a successful 3D (camera) reconstruction. Each modification to the Tracks (or other settings that affect the reconstruction) will then no longer fit the successful 3D reconstruction. Therefore, the 3D (camera) reconstruction will be deleted for modified Tracks.

正常情况下，在成功的3D (摄像机)重建后，轨道上不需要修改其他任何东西。每次对轨道(或其他影响重建的设置)的修改将不再适合成功的3D 重建。因此，三维(摄像机)重建将删除修改轨道。

However, if you use the Objekt Tracker, a common workflow is to first create a complete Camera Tracking with a subsequent Object Tracking for which new Tracks can be created. With these new Tracks, the 3D (camera) reconstruction will not be affected.

然而，如果您使用 Objekt 跟踪器，一个常见的工作流程是首先创建一个完整的相机跟踪，然后创建一个新的对象跟踪，为此可以创建新的跟踪。有了这些新的轨道，3D (相机)重建将不会受到影响。

After the 3D (camera) reconstruction you should enable the Lock Solved Data option (this option can also be activated prior to clicking on the Run 3D Solver button). The 3D (camera) reconstruction will then be locked and cannot be modified (you can, however, click on the Run 3D Solver button at any time to start a new reconstruction).

在3D (相机)重建之后，您应该启用锁解决数据选项(这个选项也可以在点击运行3D 规划按钮之前激活)。然后3D (相机)重建将被锁定并且不能被修改(但是，您可以在任何时候点击 Run 3D Solver 按钮来开始新的重建)。

3D Feature Display
Radius[0..+∞m]

3D 特征显示半径[0. . + ∞ m ]

If these settings seem familiar to you it’s because the same settings are also available for the Null object. They also perform the same function: they control the display type for the Null objects (features) that were created by the Motion Tracker and represent the positions of the successfully reconstructed Tracks.

如果您觉得这些设置很熟悉，那是因为 Null 对象也有相同的设置。它们还执行同样的功能: 它们控制由运动跟踪器创建的 Null 对象(特性)的显示类型，并表示成功重建的轨道的位置。