MODIFIED FRINGE-ADJUSTED JOINT TRANSFORM CORRELATION TO ACCOMMODATE NOISE IN THE INPUT SCENE

A modified fringe-adjusted joint transform correlator is proposed that is able to accommodate noise in the input scene. The effect of noise in the input scene on the performance of the joint transform correlato r is analyzed and quantified. When the target is embedded in a severel y noise-corrupted input scene, it is shown that the proposed modified fringe-adjusted filter joint transform correlator delivers a better co rrelation performance and the capacity to accommodate this noise than does the fringe-adjusted filter-based correlator. When the power spect ra of the input image and the reference image are subtracted from the power spectrum of the joint-input image, it is found that the noise ef fect on the output plane is independent of the objects in the input sc ene and originates from the convolution of the reference image and noi se in the input scene.