Patent ID: 8233734

Claim:
A method of upsampling an image, the method comprising: constructing a coarse high-frequency component from a low-resolution, full-frequency image, the coarse high-frequency component comprising a plurality of inferred first-tier high-frequency patches obtained from an existing knowledge base; constructing a high-compatibility component from the low-resolution, full-frequency image without using the existing knowledge base; combining the high-compatibility component with the coarse high-frequency component to yield an enhanced high-frequency component, the enhanced high-frequency component comprising a plurality of enhanced high-frequency patches; constructing an improved high-frequency component from the enhanced high-frequency component, the improved high-frequency component comprising a plurality of inferred third-tier high-frequency patches obtained from the existing knowledge base; and blending the improved high-frequency component with a high-resolution, low-frequency image, interpolated from the low-resolution, full-frequency image, to yield a high-resolution image.