1. A device comprising: a camera configured to capture images; one or more processors; and memory storing program instructions executable by the one or more processors to: for a plurality of images, obtain an image captured by the camera; and analyze pixel data of the image to determine an image orientation for the image; and based at least in part on a statistical analysis of at least a portion of the plurality of determined image orientations, determine an orientation bias, wherein the orientation bias is relative to the camera.