Orthophoto Viewer

To open a 2D viewer to visualize and dimension 2D maps created in Reconstructor (both blueprints, x-ray orthophotos and standard orthophotos).

All the functionalities are below explained.

Navigation Mode

Navigation [Alt+1]

Pan the view by clicking the left mouse button and releasing it when the desired view is achieved.

	Zoom out To decrease the orthophoto zoom level.
	Zoom in To increase the orthophoto zoom level.
	Zoom to Fit To zoom to fit the entire orthophoto.
	Zoom 1:1 To zoom to the orthophoto pixel size.

Selection [Alt+2]

Click on a item (e.g. a dimension) to add it to a multiple selection. Click on it once again to unselect it.

Click a point to start a selection rectangle, drag out a box then click to another point to complete the selection.

A different selection is due to a different direction by creating the rectangle:

Left to Right: to select fully enclosed items
Right to Left: to select partly enclosed items

Press Esc to cancel the rectangle

Double click or press Esc to deselect all items.

Press Del (Canc) or the command Delete to delete the selection.

Measure Mode

	Linear [Alt+3] To add a linear dimension, X or Y aligned. Click to pick the measure starting point. Move the cursor to seek the desired position of the dimension and then click when you found it. Hold the Alt key to axis-align the measure during the point selection.
	Aligned [Alt+4] To add a linear dimension, aligned to the distance between the ending points. Click to pick the measure starting point and then click to the end point. Move the cursor to seek the desired position of the dimension and then click when you found it. Hold the Alt key to axis-align the measure.
	Angle [Alt+5] To add a measure angle First click to pick the vertex of the angle measure, then click to pick the first side (a half-line will appear) and finally click to pick the second side. Move the cursor to seek the desired position of the dimension and then click when you found it.
	Area [Alt+6] To define a perimeter on the map and compute the area inside it. Click to pick the first vertex. Click to add polygon vertices until you complete your perimeter and then click the first vertex again to close the area (that will be colored in red). Move the cursor to seek the desired position of area's value annotation and then click when you found it. During the picking point press Esc to delete the latest point.
	Continue [Alt+9] If pressed after the Linear/Aligned/Angle commands, permits to add other dimensions, aligned to the latest one.

After inserting the dimensions, they will be also listed in the Project Window as items related to the orthophoto.

Delete

To delete the selection of objects made by the Selection tool.

Settings

Settings [Ctrl+,]

To set the viewer settings and the properties of the 2D image.

Viewer Settings

Check/uncheck Show tools instructions to show/hide the suggestions about the commands use.

Check/uncheck Draw grid to show/hide the grid. Here you can also choose the grid colorization.

Note that the grid unit is depending on the zoom level.

By clicking on the Change units... button it's possible to change the current units of measure. Few preset are available, but different units of measure for lengths, areas and angles can be set, as well as the number of decimal digits.

Orthophoto (X-Ray) properties

Here the background (and foreground if you are managing a X-ray orthophoto) colors can be changed.

Also the color (RGB and alpha channel), the arrow size and the text size of the dimensions can be changed as you please.

The image resolution is displayed, as well as the total photo (image) size in pixels.

If the resolution is here changed, it's necessary to recreate (snap again) the orthophoto in order to save the changes.

Export

To export the orthophoto (including all the customized dimensions) in different formats:

1. Image file
A *.png file is exported, keeping the same dimension and resolution of the original orthophoto.

2. AutoCAD Script
Several options are available to export your orthophoto to AutoCAD, in the settings dialog.

See Exporting orthophotos to AutoCAD for more details.

3. Publish to GoBlueprint

To export and save the orthophoto and the relative dimensions in a *.rec2dv format, readable from the free Gexcel 2D viewer GoBlueprint.

By opening it in GoBlueprint, all the properties of the orthophoto and its dimensions are kept.

Note

If changes are applied from the last time you open the orthophoto viewer, you are asked to redo the snap.

The Logarithmic Transform is suggested as contrast enhancement algorithm: the greater is the point cloud density in the view direction, the greater is the contrast (according to a logarithmic function).