X-Rite specializes in the construction of devices that acquire highly accurate color data. As part of our advanced development, we have engineered a process for generation of high dynamic range (HDR) spectral images from digital CCD cameras using highly characterized LED illumination sources. Our instrumentation involves multiple cameras and illumination sources arranged to produce a gonio-spectrophotometric set of images. Within this process, standard image processing techniques exacted a high computational cost and initially prevented this process from being attractive and useful. CUDA enabled us to achieve a roughly 140x computational improvement over the original implementation, both by parallelizing the computations via the GPU and by encouraging specific algorithm optimizations.