Full-color computer-generated hologram using wavelet transform and color space conversion
نویسندگان
چکیده
منابع مشابه
Calculation reduction method for color computer-generated hologram using color space conversion
Abstract. We report a calculation reduction method for color computer-generated holograms (CGHs) using color space conversion. Color CGHs are generally calculated on RGB space. In this paper, we calculate color CGHs in other color spaces: for example, YCbCr color space. In YCbCr color space, a RGB image is converted to the luminance component (Y), blue-difference chroma (Cb) and red-difference ...
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A technique to determine a real nonnegative function representing the transmittance of a synthesized hologram is described. The technique uses the positions of the samples in the synthesized hologram to record the phase information of a complex wavefront. Synthesized holograms are displayed on a flying spot scanner and recorded on film. The transmittance of the synthesized hologram is quantized...
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ةـصلاخلا : دقل مدختسا رٌيثآ يف تاجيوملا ة ينقت نيثحا بلا نم فينصت روصلا يف ةجس نلأا ةعجشم جئا تن عم . لعلو بيلاسلأا ر ثآأ ل يلحت يف اً حاجن ةجس نلأا رصتقت نلآا ىتح ليلحت ىلع طقف ةيدامرلا روصلا . يف ةد يدج ة قيرط حرتقنس ف ،ثحبلا اذ ه يف امأ روص نم ةجس نلأا فينصت ة نولم . لا د متعتو ة قيرط ىلع ةيبصعلا تاكبشلاو تاجيوملا مادختسا . وكتت ن ةديدجلا ةقيرطلا نم جارختسا يجيوملا ليلحتلا نم ةصاخ ت...
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This document is an introduction to the design and fabrication of computer generated hologram (CGH) as I understood them back in 1997. At that time, I was visiting Professor Toyohiko Yatagai1 in Japan. I also included in this document a short description of the application ‘DoCGH’ that I wrote to generate simple hologram. This work was supported by a grant of the Swiss Academy of Engineering Sc...
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Retrieval by image content has received great attention in the last decades. In this paper, a content-based image retrieval method based on the wavelet transform is proposed. Due to the superiority in multiresolution analysis and spatial-frequency localization, the wavelet transform is applied to extract low-level features from the images. In the image database establishing phase, each image is...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2019
ISSN: 1094-4087
DOI: 10.1364/oe.27.008153