Spectral Reconstruction

I have a small system which consist of: Led Clusters, camera(RGB or grayscale) and an object to be detected. I am emitting a light from the LED clusters (ex: yellow). After emitting light on the object, I am capturing an image for the object from the camera. I want to get the spectral image of the obj开发者_JAVA百科ect from the captured image. Please if any one knows the algorithm or a code for this purpose(grayscale or RGB camera), tell me. Thanks.....

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It sounds like you want to compute the Fourier transform of the captured image, is that correct? If that's the case I think this could be a good start point

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You want the color spectrum of an image but you only have an R,G,B value?

Good luck with that