文章基本信息

标题：3次元フィルタリングに基づく焦点合わせの異なる多数枚の画像群からの全焦点画像の生成
本地全文：下载
作者：児玉和也 ; 久保田彰
期刊名称：映像情報メディア学会誌
印刷版ISSN：1342-6907
电子版ISSN：1881-6908
出版年度：2006
卷号：60
期号：7
页码：1077-1084
DOI：10.3169/itej.60.1077
出版社：The Institute of Image Information and Television Engineers
摘要：A method for generating all-in-focus images by integrating multiple differently focused images is described. First, based on the assumption that objects are defocused by a simple geometrical blurring model, we derive a formula between acquired images on certain imaging planes and spatial information of objects by using a convolution of a 3-D blur. Then, we analyze spatial frequency components of the blur kernel to obtain a 3-D filter that generates an all-in-focus image from the acquired images. Simulations of image generation are performed utilizing synthetic images to study how noise, object depths, and certain parameters of the blur and the filter affect the quality. We also introduce pre-processing that corrects the size of acquired images and a simple method for estimating the parameter of the 3-D blur. Finally, we show experimental results of all-in-focus image generation from real images.
关键词：焦点;ぼけ;3次元;フィルタ;鮮鋭化;全焦点画像