True Ortho in MapBrowser is a continuous ortho mosaic implementation of the True Ortho option provided through 3D Export.
Regular orthographic images have building lean which combined with parallax error can result in features being blocked and invisible. This can lead to inaccurate estimations or measurements. True Ortho eliminates all parallax distortion which allows for accurate horizontal measurement.
NOTE: True Ortho is currently included with 3D Viewer and 3D Export subscriptions. For more details and technical information, see 3D Products.
Viewing True Ortho
Select True Ortho from the Base Layer picker. True Ortho vs Vertical
Let's take a look at the differences between True Ortho and Vertical imagery.
|Only available to 3D Viewer users||Available to all users|
|Zero building lean||Building lean present|
Above-ground objects spatially consistent between image
Above-ground objects appear in different positions between images
|No horizontal measurement error of above ground objects due to parallax error||Some horizontal error in measurement of above ground objects due to parallax error may be possible|
|Updated for 3D captures only||More frequently updated|
|Derived from 3D processing||Unaltered images|