Bayesian image super resolution

A computer program product encoding a computer program for executing on a computer system a computer process for computing a high resolution image of a target from multiple low resolution images taken of the target by an image capture device, each low resolution image having at least one difference in perspective relative to the target as compared to each other low resolution image, each difference in perspective being represented by a registration parameter, the computer process comprising:

• optimizing a marginal likelihood associated with the low resolution images that is dependent upon one or more registration parameters of the low resolution images and an acuity parameter associated with the image capture device and is independent of the high resolution image to determine estimates of the one or more registration parameters and the acuity parameter;
• computing a mean of a posterior distribution associated with the high resolution image using the estimates of the one or more registration parameters and the acuity parameter to determine the high resolution image.

A system for computing a high resolution image of a target from multiple low resolution images taken of the target by an image capture device, each low resolution image having at least one difference in perspective relative to the target as compared to each other low resolution image, each difference in perspective being represented by a registration parameter, the system comprising:

• a fine registration module optimizing a marginal likelihood associated with the low resolution images that is dependent upon one or more registration parameters of the low resolution images and an acuity parameter associated with the image capture device and is independent of the high resolution image to determine estimates of the one or more registration parameters and the acuity parameter;
• a high resolution inference module computing a mean of a posterior distribution associated with the high resolution image using the estimates of the one or more registration parameters and the acuity parameter to determine the high resolution image.