1. Apparatus for reconstructing a higher-dynamic-range image from a full resolution, lower dynamic range (FRLDR) representation of an image and a lower resolution, higher-dynamic-range (LRHDR) representation of the image, the LRHDR representation having a lower resolution and a higher dynamic range than the FRLDR representation, the apparatus comprising: a spatial filtering unit configured to generate a scaling image comprising information relating to high spatial frequency components of the FRLDR representation; an upsampling unit configured to generate an upsampled image from the LRHDR representation; and, a combining unit configured to combine the scaling image and the upsampled image to obtain a reconstructed higher-dynamic-range image, wherein each of the spatial filtering unit, upsampling unit and combining unit comprises image-processing hardware, software stored on a non-transitory computer-readable medium and executable by a data processor, or a combination thereof.