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论文编号:WLX118 字数:11736,页数:24摘 要 现代彩色照相，是现代科学技术对人类现代文化生活的一个很大的贡献，已普及全球，受到人们普遍的欢迎。从技术上看，现代彩色照像，是以彩色感光胶片为基础的技术，而彩色感光胶片系由多层有机染料的感光层构成的，它的材料制备和冲洗、放大的处理都离不开化学，所以可说是化学的彩色摄影技术。然而由于现在比较完善的自动相机和彩色冲洗放大设备以及优质化学冲洗药品的配套，现在拍彩色像片已很简单，几乎没有什么未解决的问题，效果也是令人满意的。但是，由于化学染料不可避免地会自然褪色，彩色感光胶片也不例外，记录的彩色图像往往不能经久保存，会自然褪色。本文介绍了通过4f光学系统对黑白光栅编码片实行光学解码的实验流程，并提出一种从编码图片恢复真彩图象的数字解码技术和方法，实现用计算机设备作编码片的解码。使用MATLAB软件的图像处理工具，通过对初始图像的预处理，傅立叶变换，频域滤波，傅立叶逆变换和图像合成的步骤来实现三色光栅黑白编码图像的彩色恢复。关键词： Matlab 黑白编码图像 光学解码 数字解码 彩色恢复 傅立叶（逆）变换 Abstract Modern photographic picture is modern science and technology, it makes a great contribution to the world ,it is widely welcomed. Technically, modern color photograph, based on color photographic film, and the technology of color film by layers of photographic organic dyes, layer materials preparation and flush, processing is inseparable from the chemical, so the color photography is chemistry. However, because now comparatively perfect automatic camera and color washing amplification equipment and excellent chemical chemicals, take now color photograph has very simple, almost no unsolved problems, the result is satisfactory. However, due to the chemical dyestuff inevitably natural color fade film is not exceptional also, records of color image, will often cannot wear preservation of natural fade.In this paper,I introduced an experiment of decoding encodede film through optical 4f system,but also presented a digital decoding method with Matlab,make the encoded film can be decoded by personal computer.By using the image tools of Matlab,there are five steps to realize decoding;image preprocessing, fourier transformation,color filting,inverse fourier transformation, image synthesis.In order to compelete digital decoding. Key word;Matlab coded image optical decode digital decode (inverse)Forier transformation 目 录摘要………………………………………………………………………………………………1英文摘要…………………………………………………………………………………………2绪论………………………………………………………………………………………41.1前言……………………………………………………………………………………………41.2彩色数字解码技术的研究历史………………………………………………………………41.3本文主要内容的概述…………………………………………………………………………4第二章 技术理论基础……………………………………………………………………………62.1阿贝成像原理…………………………………………………………………………………62.2、彩色编码与彩色编码解码技术的原理……………………………………………………62.3.傅立叶变换在图形处理中的应用……………………………………………………………72.3.1 连续傅里叶变换…………………………………………………………………………72.3.2 离散傅里叶变换……………………………………………………………………………82.3.3 快速傅里叶变换……………………………………………………………………………92.3.4 傅立叶变换在图像处理中的重要作用…………………………………………………92.4.扫描仪与数码相机的工作原理………………………………………………………………9第三章 MATLAB图像处理………………………………………………………………………11第四章 光学解码实验…………………………………………………………………………14第五章 MATLAB数字解码实验…………………………………………………………………175.1图像预处理……………………………………………………………………………………195.2 傅里叶变换…………………………………………………………………………………195.3分频滤波………………………………………………………………………………………195.4傅立叶逆变换…………………………………………………………………………………205.5图像合成………………………………………………………………………………………20第六章 总结 ……………………………………………………………………………………21致谢………………………………………………………………………………………………22参考文献…………………………………………………………………………………………23 |
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发表于 16:32