1. A radiographic system comprising: a radiation source; a radiation receiver, wherein at least one of the radiation source and the radiation receiver is movable with respect to one another; a processor; a memory; and program instructions stored in the memory that, when executed by the processor, cause the radiographic system to perform operations comprising: capturing a first radiograph containing a first image of an object of interest with the radiation source and the radiation receiver in a first orientation with respect to one another, wherein a distance of the object of interest relative to the radiation receiver is unknown; storing, in the memory, the first radiograph and metadata representing vertical and horizontal positions of the radiation source and the radiation receiver in the first orientation; moving at least one of the radiation source and the radiation receiver so that the radiation source and the radiation receiver are in a second orientation with respect to one another; capturing a second radiograph containing a second image of the object of interest with the radiation source and the radiation receiver in the second orientation; storing, in the memory, the second radiograph and metadata representing vertical and horizontal positions of the radiation source and the radiation receiver in the second orientation; and based on the captured radiographs and one or more of the vertical and horizontal positions of the first and second orientations, determining the distance of the object of interest relative to the radiation receiver.