1. An interchangeability system to enable different depth cameras to each provide usable depth imagery to a connected depth image consumer, the system comprising: a capture module to receive a native depth image from a depth camera connected to a depth image consumer, the native depth image being unusable by the depth image consumer; a virtualization module to convert the native depth image to a virtual depth image of reduced or modified content relative to the native depth image, the virtual depth image usable by the depth image consumer; and an output module to output the virtual depth image to the depth image consumer.