In addition to the generic FME feature attributes that FME Workbench adds to all features (see About Feature Attributes), this format adds the format-specific attributes described in this section.
| Attribute Name | Contents |
|---|---|
| e57_type | This will always be e57_point_cloud. |
| e57_creation_datetime | Date and time that the file was created. |
| e57_creation_datetime_isatomicclockreferenced | This attribute will be present with a value of 1 if, and only if, the time stored in e57_creation_datetime is obtained from an atomic clock time source. Shall be either 0 or 1. |
| e57_extensions{}.prefix | A list of extension prefixes. |
| e57_extensions{}.uri | A list of the URI for each extension. |
| e57_format_name |
Name of the format. Shall contain the string "ASTM E57 3D Imaging Data File". This is a reader attribute. |
| e57_guid | A globally unique identification (GUID) String for the current version of the file. |
| e57_library_version | The version identifier for the E57 file format library that wrote the file. |
| e57_geometry_index | The index of this point cloud or raster in the file. |
| e57_version_major |
The major version number of the file format. This is a reader attribute. |
| e57_version_minor |
The minor version number of the file format. This is a reader attribute. |
This format adds the following format-specific traits for point cloud geometries.
| Trait Name | Contents |
|---|---|
| e57_acquisition_start | The start date and time that the data was acquired. |
| e57_acquisition_start_isatomicclockreferenced | This attribute will be present with a value of 1 if, and only if, the time stored in e57_acquisition_start is obtained from an atomic clock time source. Shall be either 0 or 1. |
| e57_acquisition_end | The end date and time that the data was acquired. |
| e57_acquisition_end_isatomicclockreferenced | This attribute will be present with a value of 1 if, and only if, the time stored in e57_acquisition_end is obtained from an atomic clock time source. Shall be either 0 or 1. |
| e57_atmospheric_pressure | The atmospheric pressure, measured at the sensor, at the time of data collection (in Pascals). |
| e57_description | A description of the point cloud. |
| e57_guid | A globally unique identifier for the current version of the point cloud. |
| e57_original_guids{} | A list of of globally unique identifiers identifying the data set (or sets) from which the points in this point cloud originated. |
| e57_relative_humidity | The percentage relative humidity, measured at the sensor, at the time of data collection. |
| e57_sensor_hardware_version | The version identifier for the sensor hardware at the time of data collection. |
| e57_sensor_model | The model name or number for the sensor used to collect the points in this point cloud. |
| e57_sensor_serial_number | The serial number for the sensor used to collect the points in this point cloud. |
| e57_sensor_software_version | The version identifier for the software used for the data collection. |
| e57_sensor_vendor | The name of the manufacturer for the sensor used to collect the points in this point cloud. |
| e57_temperature | The ambient temperature, measured at the sensor, at the time of data collection (in degrees Celsius). |
This format adds the following format-specific traits for raster geometries.
| Trait Name | Contents |
|---|---|
| e57_acquisition_datetime | The date and time that the image was acquired. |
| e57_acquisition_datetime_isatomicclockreferenced | This attribute will be present with a value of 1 if, and only if, the time stored in e57_acquisition_datetime is obtained from an atomic clock time source. Shall be either 0 or 1. |
| e57_associated_pointcloud_guid | The globally unique identifier for the point cloud object that was being acquired when the picture was taken. |
| e57_description | A user-defined description for the image. |
| e57_image_representation | The representation of the image. Values are visualReferenceRepresentation, pinholeRepresentation, sphericalRepresentation, and cylindricalRepresentation. |
| e57_raster_format | The underlying format in which the raster is stored. Either PNGRASTER or JPEG. |
| e57_rotation_w | The scalar part of the rotation quaternion. |
| e57_rotation_x | The i coefficient of the rotation quaternion. |
| e57_rotation_y | The j coefficient of the rotation quaternion. |
| e57_rotation_z | The k coefficient of the rotation quaternion. |
| e57_sensor_model | The model name or number for the sensor. |
| e57_sensor_serial_number | The serial number for the sensor. |
| e57_sensor_vendor | The name of the manufacturer for the sensor used to collect the image. |
| e57_separate_image_mask | Whether the image mask (alpha band) is stored in a separate blob from the data. |
This format adds the following format-specific traits for raster geometries with an image representation of pinholeRepresentation:
| Trait Name | Contents |
|---|---|
| e57_focal_length | The camera’s focal length (in meters). |
| e57_pixel_height | The height of the pixels in the camera (in meters). |
| e57_pixel_width | The width of the pixels in the camera (in meters). |
| e57_principal_point_x | The X coordinate in the image of the principal point, (in pixels). The principal point is the intersection of the z axis of the camera. |
| e57_principal_point_y | The Y coordinate in the image of the principal point (in pixels). |
This format adds the following format-specific traits for raster geometries with an image representation of sphericalRepresentation:
| Trait Name | Contents |
|---|---|
| e57_pixel_height | The width of a pixel in the image (in radians). |
| e57_pixel_width | The height of a pixel in the image (in radians). |
This format adds the following format-specific traits for raster geometries with an image representation of cylindricalRepresentation:
| Trait Name | Contents |
|---|---|
| e57_pixel_height | The height of a pixel in the image (in meters). |
| e57_pixel_width | The width of a pixel in the image (in radians). |
| e57_principal_point_y | The Y coordinate in the image of the principal point (in pixels). This is the intersection of the z = 0 plane with the image. |
| e57_radius | The closest distance from the cylindrical image surface to the center of projection (that is, the radius of the cylinder) (in meters). |