A method for restoring data in a hyperspectral imaging system with large keystone without loss of spatial resolution

This report proposes a new method of keystone correction in the postprocessing of hyperspectral images. Unlike conventional resampling the proposed method does not introduce any loss of resolution. A hardware modification of the hyperspectral camera, which will be necessary for the practical implementation of the method, is also briefly discussed. The potential advantages of the proposed method are large. When keystone correction is no longer required in hardware, it will be possible to design significantly sharper and/or faster optics. In addition, such optics may be both smaller and cheaper than the optics of the current hyperspectral cameras. We suggest a joint FFI-NEO project with the goal of developing the method further and building a new hyperspectral camera based on it. Such a project would benefit from NEO's expertise in design of hyperspectral cameras and FFI's expertise in processing of hyperspectral data. The outcome of the project could be a rather impressive instrument which will perform substantially better than the current generation of hyperspectral cameras.