Automatic image orientation and straightening through image analysis

摘要

Systems, methods, and computer readable media for adjusting the orientation of an image frame and a scene depicted in the image frame are described. In general, techniques are disclosed for analyzing an image with one or more feature detectors to identify features in the image. An alignment or position associated with one or more features identified in the image may be used to determine a proper orientation for the image frame. The image can then be rotated to the proper orientation. It may also be determined if a scene depicted in the image is properly aligned in the rotated image orientation. If not, alignment information associated with the identified features may be utilized to straighten the depicted scene.

主权项

1. A non-transitory program storage device, readable by a processor and comprising instructions stored thereon to cause the processor to:
receive a digital photographic image; analyze the received image with one or more feature detectors, each of the one or more feature detectors configured to identify a feature; determine an orientation for the received image based, at least in part, on one or more identified features in the received image; rotate the received image to the determined orientation; identify an alignment of the one or more identified features at the determined orientation; determine an offset between a known typical alignment and the identified alignment for each of the one or more identified features at the determined orientation; aggregate the at least one determined offset to determine a scene offset; adjust an in-plane rotational alignment of a scene depicted in the rotated image based, at least in part, on the scene offset to generate a straightened image; and save the straightened image in a memory.