Abstract: Techniques and systems are provided for image processing. For instance, a process can include obtaining pose information for an image sensor, the pose information indicating a set of viewpoints of an environment, wherein the image sensor is configured to capture frames for reconstructing an object; fitting a curve to the set of viewpoints; determining one or more characteristics of a curve; determining a direction of the image sensor based on the one or more characteristics of the curve and the set of viewpoints; determining an overlap ratio based on the one or more characteristics of the curve and the determined direction of the image sensor; and outputting the determined overlap ratio for selecting frames to be used for reconstructing the object.