Region of interest based image registration

摘要

Techniques for registering images based on an identified region of interest (ROI) are described. In general, the disclosed techniques identify a region of ROI within an image and assign areas within the image corresponding to those regions more importance during the registration process. More particularly, the disclosed techniques may employ user-input or image content information to identify the ROI. Once identified, features within the ROI may be given more weight or significance during registration operations than other areas of the image having high-feature content but which are not as important to the individual capturing the image.

主权项

1. A non-transitory computer readable program storage device, readable by a processor and comprising instructions stored thereon to cause one or more processors to:
receive an image having a plurality of portions, wherein each portion corresponds to an area of the image; obtain, for each portion, a confidence value and an alignment value for a first registration parameter; identify a region of interest for the image that is coincident to one or more of the portions; determine, for each portion, an offset value for the first registration parameter that is based, at least in part, on a combination of the portion's confidence value, alignment value and an associated weight value, wherein the weight value is larger for image portions coincident with the region of interest than it is for image portions that are not coincident with the region of interest; determine an image alignment value for the first registration parameter based, at least in part, on a combination of the offset values for each of the portions; and register the image with a prior received image based, at least in part, on the image alignment value for the first registration parameter.