GoThro: optical transfer of camera viewpoint using retro-transmissive optical system

Recent advances in computational photography have enabled the creation of images that contain additional attributes. However, capturing images of objects concealed behind obstructions or out of a camera's field of view is a challenge. We designed an optical transformation system that utilizes a conventional camera, a concave lens, and Micro-Mirror Array Plates (MMAPs) to enable images to be captured through small holes in walls or other obstructions. Our experimental prototype demonstrated that it was possible to capture images of the area on the other side of a wall through a 3-mm hole. Our system could be used to capture images from places difficult to position a camera, such in rubble in disaster areas.