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In this paper, we describe an iterative dummy area method for the improvement of computer-generated hologram (CGH) reconstruction using angler spectrum method. A hologram is a medium on which interference fringes of light are recorded. It is expected not only to represent three dimensions but also to be applied in various applications such as storage. Hologram has two steps of production and reconstruction. A CGH distribution is calculated by computer. We suggest a method to reduce the reconstruction error of CGH using a dummy area added to the original image. It is known that if the dummy area is added to the input image, the error of the reconstructed image can be reduced. The size of the dummy area can be specified. As the area is set to be larger, the error of the reconstructed image can be reduced, there arises a problem that the size of the hologram increases. The size of the hologram should not be large because it depends on the output device. In order to solve this problem, we consider an appropriate setting method of the dummy area. Therefore, we can expect to improve the resolution of the reconstructed image without changing the size of the hologram using the iterative dummy area method.

Iterative Dummy Area Method for the Improvement of CGH Reconstruction using Angler Spectrum Method