Modify attachment

<< Click to Display Table of Contents >>

Navigation:  TerraPhoto User Guide > Tool Reference > Commands for Raster References > Edit pulldown menu >

Modify attachment

Modify attachment

Modify attachment command lets you change parameters for single or several reference images. This includes visibility parameters, image coordinates and size, and background information. If several images are selected for modification, the options are limited.

To modify a single attached reference image:

1. Select the reference image which you want to modify.

2. Select Modify attachment command from the Edit pulldown menu.

This opens the Modify attachment dialog:

modify_attachment

3. Enter new values for parameters which you want to change.

4. Click OK.

This applies the new parameters to the selected image.

SETTING

EFFECT

View 1 ... 8

Defines the visibility of the reference image in MicroStation views.

Render

Defines the visibility of the reference image in views that are rendered with TerraPhoto rendering tools.

Invert

Defines the reference image to be displayed with inverted colors.

Easting

Values for image positioning along the x axis:

Origin - X coordinate of the image origin.

Pixel size - pixel width.

Corner - X coordinate of the image corner opposite to the origin.

Northing

Values for image positioning along the y axis:

Origin - Y coordinate of the image origin.

Pixel size - pixel height.

Corner - Y coordinate of image corner opposite to the origin.

Background

Pixels to display as transparent:

Not transparent - no image pixels are transparent.

Extract color - pixels with exact given RGB color value.

Close to color - pixels close to a given RGB color value.

Red Green Blue

Color values for transparent pixels expressed in RGB color space values. This is only active if Background is set to Exact color or Close to color.

Tolerance

Tolerance value added to the RGB values for defining transparent pixels. This is only active if Background is set to Close to color.

Channels

Channel numbers of the reference images which are displayed in place of TerraPhoto’s RGB channels. You may replace, for example, the red channel with a near-infrared channel stored in the reference image.

To modify multiple attached reference images:

1. Select several reference images which you want to modify.

2. Select Modify attachment command from the Edit pulldown menu.

This opens the Modify several attachments dialog:

modify_several_attachments

3. Enter new values for parameters which you want to change.

4. Click OK.

This applies the new parameters to the selected images.

SETTING

EFFECT

Pixel width

Width of the image pixels.

Pixel height

Height of the image pixels.

Channels

Number of original image channels applied to RGB channels in TerraPhoto.

Background

Pixels to display as transparent:

Not transparent - no image pixels are transparent.

Extract color - pixels with exact given RGB color value.

Close to color - pixels close to a given RGB color value.

Red Green Blue

Color values for transparent pixels expressed in RGB color space values. This is only active if Background is set to Exact color or Close to color.

Tolerance

Tolerance value added to the RGB values for defining transparent pixels. This is only active if Background is set to Close to color.