The Geographic Imager Panel – Avenza Systems

To show or hide the Geographic Imager panel, go to Plugins > Avenza Geographic Imager > Geographic Imager.

The Geographic Imager panel provides access to all the main Geographic Imager tools and displays image information.

Geographic Imager panels in Adobe Photoshop 2021 and newer

A new Geographic Imager panel is available for Adobe Photoshop 2021 and newer. In addition, the other tabs from the previous generation's panel (see below) are now separated into their own panels. Like other Adobe Photoshop panels, they can be docked, minimized, and moved around the workspace for more flexibility.

General Panel

new_gi_general_panel

Corners Panel

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DEM Panel

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Survey Panel

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Ruler Panel

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Geographic Imager Tools

Button	Tool	Description
	Georeference	Reference or rectify an image using control points.
	Transform	Transform an image into a different coordinate system, change pixel size, and modify pixel dimensions.
	Mosaic	Assemble multiple images together into a larger one.
	Tile	Split an image into multiple smaller ones by size or number of tiles required.
	GeoCrop	Crop images based on location by specifying coordinates of the output image.
	Terrain Shader	Apply a color gradient or hill shade to digital elevation models or images.
	Channel Management	Adjust color mode and channel role.
	Export Web Tiles	Export an image as web tiles and an HTML file compatible with online map services.
	Export Vector Data - Points and Text	Export points and text to various geospatial vector formats including SHP and KML.
	Export Vector Data - Paths	Export paths to various geospatial vector formats including SHP and KML.
	Points and Text Import	Import points and text data. In Adobe Photoshop CS6, Points and Text Import is only available through File > Import.
	Lines and Areas Import	Import line and area data. In Adobe Photoshop CS6, Lines and Areas Import is only available through File > Import.
	Advanced Import	Import multiple images of various formats and apply settings all at once.
	Panel Options Menu	Access additional Geographic Imager features including License Management using the panel options menu (upper-right corner of the panel). See the Panel Options Menu section to learn about what each menu item does.

Reference File / Coordinate System Links

These links display the location of the geographic reference file of the image and the current coordinate system of the image as defined in the Geographic Imager coordinate system database. Click the respective link to choose a new reference file or specify a different coordinate system. Note that this doesn't transform the image and only changes the coordinate system which may cause unpredictable effects on your map. Use Transform to transform the image to a different coordinate system.

Reference File

A geographic reference file contains data that relates the image in pixels to the earth in real-world coordinates. Along with other parameters, this file contains either the mathematical transformation information or an explicit list of reference points and the coordinate system (optional).

Coordinate System

Indicates the current coordinate system of the image. Click the Coordinate System information button to open the Geodetic Coordinate System Viewer which shows more detailed information about it.

Mode

The Mode indicator displays whether the image is in GCP or Standard mode. GCP mode means the image requires referencing or rectifying before some Geographic Imager tools and operations can be performed. Standard mode means the image is ready for editing with Geographic Imager tools.

Image Mode

The Image Mode indicator displays information about the current image color mode and bit depth (in bits per channel). For example, RGB | 8 means the image color mode is RGB with 8-bit depth.

Rotation Angle

The Rotation indicator shows the angle of rotation of the image from the north being straight up. A negative value indicates a clockwise rotation and a positive value indicates a counterclockwise rotation.

Tab and Panel Information

General

Geodetic Format	The current geodetic display format (click to change in Panel Preferences).
Image Size	The image size in pixels (x,y pixels).
Image Extents	The geographical extent of the image (x,y world units or units of coordinate system).
Geodetic Extents	The geodetic extent of the image (x,y degrees).
Pixel Size	The relative size of each pixel (x,y world units or units of coordinate system).
Copy to Clipboard (button)	Click to copy information values to the clipboard.

information In Adobe Photoshop CS6, the Geodetic Format is changed directly on the panel.

information Certain world projections may not provide proper values for areas outside of its extents. This may cause the Geodetic Extents to display N/A.

Corners

Top Left	The projected coordinate of the northwest corner of the image.
(Long, Lat)	The geographic coordinate of the northwest corner of the image in WGS 84.
Bottom Right	The projected coordinate of the southeast corner of the image.
(Long, Lat)	The geographic coordinate of the southeast corner of the image in WGS 84.
Copy to Clipboard (button)	Click to copy information values to the clipboard.

information Geodetic images are displayed in degrees.

information Projected images are displayed in units of the coordinate system.

DEM

Schema Name	Schema used to map elevation data to grayscale color space.
Schema Range	The range specified in the DEM schema. The actual range value displayed in parenthesis.
Range	Range of values of the current DEM in specified units. The actual range value displayed in parenthesis.
Average	The average elevation value of the DEM.
Std Dev	The standard deviation value of the DEM.
Calculate (button)	Click Calculate to obtain values for the cropped DEM.
Copy to Clipboard (button)	Click to copy statistic values to the clipboard.

information Hide the Terrain Shader and Shaded Relief Layers before clicking the Calculate button. The Statistics calculation may be inaccurate if layers above the elevation layer are not hidden.

information Statistics are calculated based on what is viewable on the canvas.

Survey

Use the Color Sampler Tool to identify up to ten points on the image.

All points	Choose to view all points or individual points (not all points can be viewed at once).
Measurement units	Choose from Ground, Geodetic, WGS84, Pixel, and DEM. The reported coordinate is the center of the pixel.
Copy to Clipboard (button)	Click to copy measurement values to the clipboard.

information The Color Sampler Tool can be used to choose up to ten points on the image. Drag and drop individual points with the left mouse button pressed to change their location. Use Ctrl (Win) or Command (Mac) to delete individual points or right-click for additional options.

information Up to 4 points with Adobe Photoshop CS6. Up to 10 points with the latest Adobe Photoshop CC.

Ruler

Use the Ruler Tool to identify measure up to two segments. Hold the Alt (Win) or Option (Mac) key and hover over the endpoint of the first segment to begin measuring the second segment. Click the Update button in the Ruler tab to view measurement values including total distance and angle.

Panel Options Menu

Menu Item	Description
Quick Save To Format (not available with Basic license)	Save a referenced image to BigTIFF, DEM TIFF, USGS DEM, Geospatial PDF, GeoTIFF, NITF, or ECW/ER Mapper. See Quick Save to Format.
Specify Reference File	Specify a reference file for the current image. See Specifying a Reference File.
Export Reference File	Export the defined coordinate system of an image to a reference file. See Exporting a Reference File.
Specify Coordinate System	Specify a coordinate system for the image. Opens the Specify Coordinate System dialog box. See Specifying a Coordinate System.
Export Coordinate System	Export the coordinate system of the image to a WKT Definition File or Esri PRJ file. See Exporting a Coordinate System.
Load Custom Coordinate System	Load a custom coordinate system data source. See Load Custom Coordinate Systems.
Edit Custom Coordinate System	Edit a custom coordinate system data source. See Edit Custom Coordinate Systems.
Preferences	Adjust Geographic Imager Preferences. See Preferences.
License Management	Opens the Geographic Imager License Management dialog box. View the Machine ID, evaluate, register, retrieve, or checkout/in floating licenses. See License Management.
Welcome Screen	Opens the Geographic Imager Welcome Screen.
Check For Updates	Check to see if there is a newer version of Geographic Imager.
Ask A Question	Opens the Avenza Support page in an Internet browser.
Help	Opens the Geographic Imager Help in an Internet browser.
Event Log	View errors, warnings, and system messages. See Event Log.
Quick Rectify	Automatically rectify a rotated image to a north/south alignment. This option is enabled when an image has a rotation. View the Geographic Imager panel rotation angle status.
Specify DEM Schema	Specify a DEM schema for the current image. Opens the Specify DEM Schema dialog box. See Opening DEMs.
Export to Avenza Maps	Export a map package that is compatible with the Avenza Maps app. See Export to Avenza Maps.
Upload to Avenza Map Store	Upload a map package directly to the Avenza Map Store. See Upload to Avenza Maps.