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    • 52. 发明授权
    • Image signal processing apparatus and method, and program and recording medium used therewith
    • 图像信号处理装置和方法,以及与其一起使用的程序和记录介质
    • US07697775B2
    • 2010-04-13
    • US10915318
    • 2004-08-11
    • Hisakazu ShirakiTetsujiro Kondo
    • Hisakazu ShirakiTetsujiro Kondo
    • G06K9/40
    • G06T5/003G06T2200/24G06T2207/20004G06T2207/20008G06T2207/20092
    • An image signal processing apparatus and method perform appropriate correction of image blurring in accordance with an image characteristic. In the apparatus, a user interface designates a blurring parameter, and a control signal generating unit generates a control signal corresponding to the designated parameter. An image characteristic detecting unit determines directions in which pixels in an input image have flat levels and directions in which pixels in the input image have levels corresponding to edges. Based on the determination, an address calculating unit reads coefficients from a coefficient ROM and supplies the coefficients to a product-sum calculating unit. The product-sum calculating unit generates a blurring-eliminated image by performing product-sum calculation using the coefficients. A post-processing unit produces an output image based on the input image and the result of product-sum calculation.
    • 图像信号处理装置和方法根据图像特性执行图像模糊的适当校正。 在该装置中,用户界面指定模糊参数,控制信号生成单元生成与指定参数对应的控制信号。 图像特征检测单元确定输入图像中的像素具有平坦水平的方向和输入图像中的像素具有对应于边缘的水平的方向。 基于该确定,地址计算单元从系数ROM读取系数,并将该系数提供给乘积和计算单元。 乘积和计算单元通过使用系数进行乘积和计算来生成去模糊图像。 后处理单元基于输入图像和乘积和计算的结果产生输出图像。