In medical imaging, X-ray photographic images are commonly used, but these have low resolution and a significant amount of noise because radiation levels are minimized for patient safety. In this paper, we propose a novel measurement algorithm for X-ray images generated by our proposed super-resolution method. To validate the measurement accuracy of our proposed algorithm, we construct a model for the measurement algorithm for joint space distance using a 3D printer, and obtain X-ray images of it. Experimental results show that the distances are measured with high accuracy.