Holographic projection of images with step-less zoom and noise suppression by pixel separation

A new method of projection of color images without color-sequential technique is proposed. It is a combination of the spatial division of the phase-only light modulator with a pixel separation noise suppression technique and an efficient propagation method called a scaled Fresnel diffraction. The unique property of a step-less and lossless zooming of the projected image is shown. The experimental demonstration of the method is presented, showing high quality, low noise images of a variable size at reasonable frame rates. (C) 2014 Elsevier B.V. All rights reserved.