Image Fusion Architecture

A method for image fusion, comprising:

• receiving a plurality of images at a pyramid generation circuit, and
• generating, at the pyramid generation circuit, for each of the received images, a plurality of pyramids by sequentially downscaling each of the received images;
• for each of the plurality of pyramids, select between storing the pyramid into a memory or bypassing the memory responsive to a first predetermined condition associated with a received configuration mode;
• receiving, at an image fusion processor, a first pyramid and a second pyramid, wherein at least one of the first pyramid and the second pyramid is one of the plurality of pyramids generated by the pyramid generation circuit;
• warping the first pyramid according to one or more warping parameters to generate a warped version of the first pyramid, the one or more warping parameters derived from a model describing correspondence between a first image from which the first pyramid is generated and a second image from which the second pyramid is generated;
• fusing the warped version of the first pyramid and the second pyramid to generate a fused image.

An electronic device, comprising:

• a memory;
• an image signal processor comprising:
• a pyramid generation circuit configured to:
• receive a plurality of images, and
• generate, for each of the received images, a plurality of pyramids by sequentially downscaling each of the received images;
• and
• a data routing circuit coupled to the pyramid generation circuit to receive the plurality of pyramids, and configured to:
• receive a configuration mode of the image signal processor, and
• for each of the plurality of pyramids, select between storing the pyramid into the memory or bypassing the memory responsive to a first predetermined condition associated with the received configuration mode;
• an image fusion processor coupled to the data routing circuit to receive a first pyramid and a second pyramid, wherein at least one of the first pyramid and the second pyramid is one of the plurality of pyramids generated by the pyramid generation circuit, the image fusion processor configured to:
• warp the first pyramid according to one or more warping parameters to generate a warped version of the first pyramid, the one or more warping parameters derived from a model describing correspondence between a first image from which the first pyramid is generated and a second image from which the second pyramid is generated, and
• fuse the warped version of the first pyramid and the second pyramid to generate a fused image.