Source encoding for image subtraction.
A technique of source encoding of an extended incoherent source for image subtraction is presented. The sourceencoding constraints are obtained from the coherence requirement for the subtraction operation. Source encoding increases the available light power for the processing operation, as a small incoherent source is no longer required. An experimental result obtained with the encoded incoherent-source technique is given. A similar result obtained by using a coherent technique is included for comparison.
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