As an effective reconstructing technique to observe large sized holographic recovered images in the wide viewing area, we have studied the projecting recovering process of 3-D holographic images with the use of the mist screen. However, in this process, it has been a difficult problem to suppress the fluctuation of the projected images properly. For this, in this paper, as one technique to perform a suitable projection of the images, we studied a projecting process of the holographic 3-D images onto the screen of micro-bubble produced underwater. Micro-bubble is easily continuously obtainable from the transparent water tank, and it enables us to use it as a long time stable screen. As this result, we can report that in this projection, more improved stability and resolution will be expected than in the mist screen. In addition, since there is no need to use the special light scattering mediums for the screen, the displaying system seems to be simple.

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A non-photorealistic rendering method for generating ripple-pattern-like images from photographic images has been proposed. However, the conventional method can generate only the ripple patterns of the vertical, horizontal, and diagonal directions. In this paper, we propose a method for generating a ripple patterns along the edges. The proposed method can enhance the edge preservation stability, and generate ripple-pattern-like images as the edges are emphasized. To validate the effectiveness of the proposed method, we conduct experiments on the image of Lena and evaluate the outputs of the proposed method visually. Experimental results are also shown for other images.

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In this paper, we propose a non-photorealistic rendering method for generating leopard-pattern-like images from photographic images by using singular value decomposition. Leopard patterns of the proposed method become dark in dark areas of photographic images, and bright in bright areas. Therefore, leopard-pattern-like images are easy to recall original photographic images. In order to verify the effectiveness of the proposed method, tests using the image of Lena are performed, and visual assessment of leopard-pattern-like images is conducted for changes in appearance as the parameter values of the proposed method are varied. As an additional test, the proposed method is applied to several photographic images besides the image of Lena.

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