Image Set Manager

Image Set Manager is a program within Carlson GIS that is used to create image sets for CAD and SurvCE.  An image set is a collection of images that cover a geographic area.  Image sets can contain thousands of images which are indexed and geo-referenced in the image set database (.IDB).  Once an Image Set is created, the rest of the tools in this area of the Images menu become available to view the images, Zoom on the images, Pan through them, etc...

Supported Image Types
Image Set Manager supports GeoTIF, TIF, JPEG, SID and BMP images.
Geo-referenced, (GeoTIF), images are directly supported by reading the embedded tags in the image. TIFF, JPEG and BMP are supported with world files and the World File Editor.

File Menu

Open Image Set
Creates a new Image Set or opens an existing Image Set. The image database and set of images are stored to a project folder.

Import Image Set


Adds an existing Image Set to the current Image Set.

 

     

Open Image Files


This command will open and display individual images for processing.  Geo-referencing is automatic for images with World Files or supported Geo-TIF. For GeoTIF the image coordinate positions will be displayed at the bottom of the image frame.

 

   

When the image is open the following tools become available.

     Image Brightness: Generalized adjustment to the tonal range. This tool is useful to lighten the image for background display

World File Editor: Allows the user to import, view, create and edit image geo-reference information.

Image Properties: Displays Information about images in the Image Set.

Tools Menu

Image Brightness

The Image Brightness tool is an easy way to make generalized adjustments to the tonal range of the image. 

 

     

1.       Open an Image and choose Image Brightness from the Tools menu.  The Image Brightness dialog box appears.

2.       Drag the slider to adjust the brightness of the image. Drag the slider to the left to decrease the brightness and to the right to increase it. Values range from -100 to +100.

3.       When you have finished making adjustments, click OK.

Convert to Greyscale
This command converts a color image to greyscale.

World File Editor
The World File Editor allows the user to import, view, create and edit image geo-reference information. A World File is an ASCII text file used to geo-reference image files. World files have the following format.

World File Format

1.0 <X Resolution>
0.000 <Amount of Translation>*
0.000 <Amount of Rotation>
1.0 <Y Resolution>
424178 <X Coordinate of 1,1 (upper-left pixel)>
4313415 <Y Coordinate of 1,1 (upper-left pixel)>

Image Export supports the following World File Formats.

Image Format

World File

TIFF, TIF

TFW

JPEG, JPG

JGW

Bitmap, BMP

BPW

Image Properties


This option is used to display information on the current image.

Crop Selection
This command allows the user to crop a specific area within an image and save it as a new image.Geo-reference by User Points
This command allows the user to pick 2 points on the image and assign coordinates to them to geo-reference the image.  The user is prompted for coordinates for each point after it is picked, and then the World File Editor is displayed with the resulting data.
Change Resolution
This command allows the user to change the resolution of the image, thereby saving it as a smaller image file size.
Image Viewer
Image Set Manager has an image viewer to display the current image.  Zoom level is controlled by the drop down list at the top left.  The X and Y pixel position and geographic coordinates are displayed  in the bottom right panel.

Image Set Menu

Add Image to Set
In order to display images they need to be added to the image database.

1.       Open an Image using Open Image File in the File Menu.

2.       Geo-reference the image. If the image is not a GeoTIF image use the World File Editor to geo-reference the image.

3.       Click Process to process and add this image to the image database. This process may take several minutes. The progress bar and dialog text will keep you informed of the progress. Large images are being clipped into smaller pieces for viewing in SurvCE. When complete click OK.

4.       Repeat the above steps to add multiple images to the database.  Multiple images in the same database should be contiguous.  Images from different locations should be placed in separate databases.

Add Multiple Images to Set
This command allows the user to add multiple images to a single Image Set.  It supports the same files as the Open Image command.  Images processed with this command must be geo-referenced.

View Image Set
The View Image Set command displays information for the images in the currently selected image database.  The images processed are displayed in the top panel, and the sub images of the selected image are displayed in the bottom panel.

Pulldown Menu Location: Images
Keyboard Command: imagemgr
Prerequisite: None