Determining magnification of remote objects in imaging and white light speckle photography
We describe a method of remotely determining the camera magnification in imaging with particular emphasis to white light speckle photography. The image shift provided by a transverse camera movement is related to the magnification factor. We experimentally verify the concept here by direct measurement of the image shift as well as fast Fourier transformation analysis. Mathematical analysis relating image shift to the expected number of fringes in the Fourier transform is also presented.
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Document Type: Original Article
Publication date: 2002-08-01