Chapter 3

Explanation of Technical Terms

Explanation of Technical Terms

nCoordinate System

With this utility software, points located in a three- dimensional space are expressed using coordinate values of threedimensional right-handed Cartesian coordinates. The center of the light-receiving lens of the digitizer is set as the origin of the coordinates. +Z direction refers to the direction facing the front side along the optical axis, + Y direction refers to the upward direction and +X direction refers to the direction facing the right, when viewed from the back of the light-receiving section.

nWindow View

This program lets you view elements using three types of views: orthogonal views (Top, Front, Back, Bottom, Left, Right), perspective views, and isometric views.

 

Camera View

 

Top View

 

Back View

Left View

Right View

 

Front View

 

Perspective View

 

Bottom View

 

Bottom View

nVertex

Vertices refer to points in a three-dimensional space. They possess three-dimensional coordinate values, and can be selected or unselected.

They can also be edited (i.e. moved and deleted).

To edit vertices, they must be selected using the [Select] menu. (For the [Select] menu, refer to page 157.)

In addition, vertices can be shown or hidden by using the Window – Property command. (For details of the Window – Property command, refer to page 230.)

nPolygon

Polygons refer to areas (surfaces) enclosed by lines (edges) connecting vertices. Only triangular and rectangular polygons are available with this software, and they can be positioned facing toward the front or rear side.

nColor Image

When an image is acquired by the VIVID (VI) series digitizer, a range image containing distance data to each point on the surface of the object is acquired as well as a color image taken from the same view angle as the range image. With this software, color images possess information used to correspond picture elements to vertices based on color information. If images are acquired using the Remote command, color images will also be saved automatically.

(When saving data on the VIVID 9i (VI-9i), VIVID 910 (VI-910) or VIVID 900 (VI-900), it is possible to select whether or not to save color images.)

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