Table in GCP/MTP Manager | Table in Basic GCP/MTP Editor |

The following actions can be performed in the table:

The table has as many rows as points in the project (GCPs / Manual Tie Points / Check Points). Each row displays information for one point.

- Number of marked images
- Label
- Type
- First coordinate
- Second coordinate
- Third coordinate
- Accuracy Horz
- Accuracy Vert

**Actions on the table**

This column displays the number of images on which each point is marked. The number can have the following colors:

**Black**: For points that have been marked on less than 2 images.**Green**: For points that have been marked on 2 or more images.**Red**: For Manual Tie Points that have been marked on less than 2 images and for which no 3D position has been estimated. This is the case for Manual Tie Points that are added using the GCP/Manual Tie Point Manager.

This column displays the label of each point. The label column is filled:

- When importing the label from the GCP file.
- When pressing the
**Add Point**button. - When drawing an object in the rayCloud.
- When manually editing the label: Double click on the corresponding cell and enter the new label.

There are four possible point types:

**2D GCP**: A 2D GCP is a point that has a known 2D position in the scene and is used for the project's AAT/BBA.**3D GCP**: A 3D GCP is a point that has a known 3D position in the scene, and that is used for the project's AAT/BBA.**Check Point**: A checkpoint is a point that has a known 3D position in the scene and is used for checking the accuracy of the reconstruction. It is not used for the project's AAT/BBA.**Manual Tie Point:**A Manual Tie Point is a point that is manually identified in several images. Its position in the scene is not known. Manual Tie Points are also created by drawing an object on the*3D View*of the*rayCloud*. Each vertex of the object corresponds to one*Manual Tie Point.*

When GCPs are imported from a file, the GCPs type is automatically set to *2D GCP* or *3D GCP* depending on how many coordinates the points have in the imported file. When a new point is added by clicking **Add Point**, then the type is by default *Manual Tie Point*.

The point type can be defined manually: Double-click on the corresponding cell and choose the desired type from the drop-down list that appears.

The first coordinate is:

**Latitude [degree]:**If the coordinate system of the GCPs is a geographic coordinate system.**X [m]**: If the coordinate system of the GCPs is a projected coordinate system. The unit is given in meters.**X [feet]**: If the coordinate system of the GCPs is a projected coordinate system. The unit is given in feet.**Arbitrary X [m]**: If the coordinate system of the GCPs is defined by the user (local coordinate system). The unit is given in meters.**Arbitrary X [feet]**: If the coordinate system of the GCPs is defined by the user (local coordinate system). The unit is given in feet.

The coordinate columns are filled:

- When importing the coordinates from the GCP file.
- When manually editing the table: Double click on the corresponding cell and type the coordinate.

The second coordinate is:

**Longitude [degree]**: If the coordinate system of the GCPs is a geographic coordinate system.**Y [m]**: If the coordinate system of the GCPs is a projected coordinate system. The unit is given in meters.**Y [feet]**: If the coordinate system of the GCPs is a projected coordinate system. The unit is given in feet.**Arbitrary Y [m]**: If the coordinate system of the GCPs is defined by the user (local coordinate system). The unit is given in meters.**Arbitrary Y [feet]**: If the coordinate system of the GCPs is defined by the user (local coordinate system). The unit is given in feet.

The coordinate columns are filled:

- When importing the coordinates from the GCP file.
- When manually editing the table: Double click on the corresponding cell and type the coordinate.

The third coordinate is:

**Altitude [m]**: If the coordinate system of the GCPs is a geographic coordinate system.**Z [m]**: If the coordinate system of the GCPs is a projected coordinate system. The unit is given in meters.**Z [feet]**: If the coordinate system of the GCPs is a projected coordinate system. The unit is given in feet.**Arbitrary Z [m]**: If the coordinate system of the GCPs is defined by the user (local coordinate system). The unit is given in meters.**Arbitrary Z [feet]**: If the coordinate system of the GCPs is defined by the user (local coordinate system). The unit is given in feet.

The coordinate columns are filled:

- When importing the coordinates from the GCP file.
- When manually editing the table: Double click on the corresponding cell and type the coordinate.

The GCP horizontal accuracy defines the horizontal accuracy value (*Accuracy Horz*). The horizontal accuracy refers to the first and second coordinates (latitude, longitude, or X, Y).

- Very accurate GCP horizontal coordinates have lower accuracy values. e.g. 0.02m
- Less accurate GCP horizontal coordinates have higher accuracy values. e.g. 1.23m

GCPs with very accurate, lower values will be given more influence over less accurate, higher value GCPs during step *1. Initial Processing*. The accuracy is a value between 0.001 and 10'000 meters.

To edit the horizontal accuracy of one GCP, double-click on the corresponding cell and enter the new value. For more information about editing the horizontal accuracy for multiple GCPs: Select multiple points.

The GCP vertical accuracy defines the vertical accuracy value (*Accuracy Vert*). The vertical accuracy refers to the third coordinate (altitude / Z).

- Very accurate GCP altitude coordinates have lower accuracy values. e.g. 0.02m
- Less accurate GCP altitude coordinates have higher accuracy values. e.g. 1.23m

GCPs with very accurate, lower values will be given more influence over less accurate, higher value GCPs during step *1. Initial Processing*. The accuracy is a value between 0.001 and 10'000 meters.

To edit the vertical accuracy of one GCP, double-click on the corresponding cell and enter the new value. For more information about editing the vertical accuracy for multiple GCPs: GCP / Manual Tie Point Table.

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