Patent ID: 8675984

Claim:
A method comprising: determining a first input image, in a plurality of input images, as a mid-exposed image; determining a first energy value for a first luma coefficient block, the first luma coefficient block being in a first plurality of luma coefficient blocks derived from the first input image; setting, based on the first energy value, a first weight factor for the first luma coefficient block and a second weight factor for a second luma coefficient block in a second plurality of luma coefficient blocks derived from a second input image, the first input image and the second input image being created with different luminance sensitivities to a scene; creating, based on (a) the first luma coefficient block, (b) the second luma coefficient block, and (c) the first weight factor and the second weight factor, an output luma coefficient block, the output luma coefficient block being a weighted combination of the first luma coefficient block and the second luma coefficient block in a plurality of output coefficient blocks to derive an output image.