Superresolving optical system with time multiplexing and computer decoding

Objects that have slow temporal variations may be superresolved with two mo ving masks such as pinhole or grating. The first mask is responsible for en coding the input image, and the second one performs the decoding operation. This approach is efficient for exceeding the resolving capability beyond A bbe's limit of resolution. However, the proposed setup requires two physica l gratings that should move in a synchronized manner. We propose what is be lieved to be a novel configuration in which the second grating responsible for the information decoding is replaced with a detector array and some pos tprocessing digital procedures. In this way the synchronization problem tha t exists when two gratings are used is simplified. Experimental results are provided for illustrating the utility of the new approach. (C) 1999 Optica l Society of America.