1. A method of processing image data derived from radiation emanating from a scene and acquired by a multi-channel enhanced vision system to render an image of the scene for display, the image exhibiting features of spatial regions of the scene with high brightness and in great detail, comprising: detecting first and second wavelength bands of radiation emanating from a scene to produce respective first and second sets of image data that include representations of relatively low contrast, high spatial frequency detail of features of spatial regions of the scene; performing nonlinear intensity transformation of data derived from the first set and second set of image data to produce, respectively, a first set of low dynamic range image data representing a first set of intensity values and a second set of low dynamic range image data representing a second set of intensity values, different pairs of associated intensity values of the first and second sets corresponding to different pixels forming an image of the scene; and combining the associated intensity values of the different pairs to form fused image data representing brightness levels of the pixels forming an image that, when rendered on a display, exhibits with high brightness and in great detail the features of the spatial regions of the scene.