US Patent 9503612 Glare mitigation for dynamic document scanning

Mitigating glare in connection with photographing a document using a camera includes assessing a first amount of glare that would result if a user were to take a snapshot at a first camera position and lighting conditions, if the first amount of glare is below a predetermined threshold, taking a snapshot with the camera, and, if the first amount of glare is above the predetermined threshold, continuously prompting the user to adjust a position of the camera and taking the snapshot when the camera is in a second position and a second amount of glare, different from the first amount of glare, is below the predetermined threshold. The lighting conditions may include effects of external lighting sources. The user may adjust the external lighting sources before taking the snapshot. The lighting conditions may include effects of an internal light source of the camera.