1. A system comprising: one or more processors; a camera to obtain images of an environment, the environment including an object of interest; a depth sensor to create depth maps of the environment, a first depth map of the depth maps corresponding to a first image of the images obtained by the camera; and one or more computer-readable media storing computer-executable instructions that, when executed by the one or more processors, cause the one or more processors to perform acts comprising: identifying, from the first image, a potential object for the object of interest; defining a region within the first image that includes the potential object identified in the first image, the region comprising less than an entirety of the first image; and analyzing a portion of the first depth map associated with the first image to determine that the potential object is the object of interest, the portion of the first depth map representing the region identified within the first image that includes the potential object.