Efficient compression of rearranged time-multiplexed elemental image arrays in MALT-based three-dimensional integral imaging

In this paper, an approach to efficiently compress the time-multiplexed EIAs picked up from the MALT-based integral imaging system is proposed. In this method, the time-multiplexed EIAs are rearranged by collecting the elemental images occupied at the same position in each EIA to enhance the similarity among the elemental images. Then, MPEG-4 is applied to these rearranged elemental images for compression. From the experimental results, it is shown that the average correlation quality (ACQ) value representing a degree of similarity between the elemental images, and the resultant compression efficiency have been enhanced by 11.50% and 9.97%, respectively on the average for three kinds of test scenarios in the proposed method, compared to those of the conventional method. Good experimental results finally confirmed the feasibility of the proposed scheme.

Research Highlights
► We present an approach to efficiently compress the time-multiplexed elemental images picked up from the MALT-based integral imaging system.
► The time-multiplexed elemental images are rearranged to enhance the similarity among them.
► MPEG-4 is applied to these rearranged elemental images for compression.
► The resultant compression efficiency has been enhanced compared to the conventional method.