Jeremy PackFollow


Images captured with digital cameras include timestamp information that indicates date and time of capture, e.g., based on a date/time setting in the camera. However, such information excludes the time zone in which the image was captured. Consequently, a true time of capture, e.g., UTC (Universal Coordinated Time) of images captured with such cameras is unknown. For example, for a camera that is set to Pacific Standard Time (PST) while capturing images in New York, the images would include a timestamp that is offset from a New York local time by three hours. This disclosure describes techniques to analyze images to determine the time-offset, e.g., from UTC, of a camera used to capture the images. Once the time-offset from UTC is determined for a camera, timestamps of other images captured with the camera can be corrected, even for those images that have no discernable location information.

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.