Alignment Settings

Here we will explain settings related to alignment (registration). They can be found in the ALIGNMENT tab / Settings.


Max features per mpx Here you can specify the maximum number of feature points (per megapixel) for the natural feature detector in the alignment. More features mean lower speed but may result in fewer components.
Max features per image defines the absolute limit to features used per image.
Image overlap defines how much of the image space is covered with the same part of the object, when talking about neighboring images. The red area in the figure below shows common physical space projected to images. The larger common area, the easier it is for RealityCapture to calculate camera poses. Set Low when image overlap is below 20%. For the best quality, the neighboring images should have overlap greater than 60%. Bigger overlap improves speed while a smaller overlap may cause disconnected components if there are not enough photographs.


Image downscale factor is a multiple by which the application reduces the size of an image before feature detection. In order to get the best precision, use full-resolution features (downscale factor 1).
Max feature reprojection error Internal precision level used during alignment. We recommend you to set it maximum to 3px and keep the errors at most in this extent.

Camera Priors

Camera pose prior settings. Define the accuracy of cameras' positions and rotations.


Control Point Prior Settings

Define the accuracy of control points and ground control points positions.



These settings apply when you start Draft Alignment.


Image overlap in RC means the same points in images. You can set low / medium / high.
Image downscale factor is a multiple by which the application reduces the size of an image.
Final model optimization When set to True, a bundle adjustment after camera model conversion into the final camera model is enabled.
These settings apply when you start Draft alignment.

Advanced Settings

Advanced settings are intended for users who are familiar with the structure-and-motion recovery problem. Do not change these settings unless you are sure what you are doing. Most of the names are self-explanatory and you should recognize the setting from that.


Lens Distortion Models

Learn more about lens distortion models

See also: