Imaging systems that were created for military purposes now are available for many commercial applications. Essential to this process is the development of smart imaging devices and systems that integrate sensing, storage, and algorithms. These systems provide new and important capabilities, including high-speed and accurate decision making, large-volume image handling, compactness, and low power consumption. This work presents advances in image sensing and processing systems, image recognition, 3D imaging and processing systems, ultrafast optical networks for image communications, and multidimensional information security systems. Students and researchers in information technologies, image processing, and optics should find useful, up-to-date information on current technology. Contributors include leading researchers in the field who provide both theoretical and practical information on recent advances. The text covers image processing and recognition algorithms, 3D sensors and systems, optical storage, and ultrafast optical networks.