1. A 3-dimensional (3D) stereo image camera system for generating a 3D stereo image, the system comprising: first and second thermal imaging cameras horizontally spaced apart by a predetermined distance to photograph a subject; and a stereo & disparity engine for providing a control signal and a clock signal to the first and second thermal imaging cameras, receiving thermal imaging data from each of said thermal imaging cameras, and calculating disparity data, distance/depth data, and temperature data of the subject from the thermal imaging data, wherein the stereo & disparity engine includes a function of matching and synchronizing lens focuses of the first and second thermal imaging cameras according to the control signal, a function of synchronizing shutter motions of the first and second thermal imaging cameras, and a function of providing a reference value relating to the performance of at least one property of a dynamic range, histogram, brightness and contrast of the thermal imaging cameras to the first and second thermal imaging cameras, respectively, and setting the first and second thermal imaging cameras to be identical in terms of the performance of at least one property.