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    • 105. 发明公开
    • Method, system and device for generating more natural images
    • Verfahren,System und Vorrichtung zur ErzeugungnatürlichererBilder
    • EP3054416A1
    • 2016-08-10
    • EP15154172.9
    • 2015-02-06
    • Universitat Pompeu-Fabra
    • Bertalmio Barate, Marcelo JoséKane, DavidCyriac, Praveen
    • G06T5/00G06T5/40H04N1/407
    • G06T5/009G06T5/40G06T2207/10016G06T2207/10024G06T2207/20008G06T2207/20076H04N5/202H04N9/69
    • A method, system and device for generating a more natural image where the method is characterized by comprising the following steps performed in an apparatus for processing an image: receiving a normalized image; computing luminance channel, computing histogram of said luminance, computing a cumulative histogram of said histogram, estimating a first parameter (Mid_X) related to the average of said cumulative histogram, a second slope parameter (Gamma_L) for small values of said cumulative histogram and a third slope parameter (Gamma_H) for large values of said cumulative histogram and estimating a gamma correction function (Gamma) from said cumulative histogram wherein said gamma correction function is a function of (Mid_X), (Gamma_L) and (Gamma_H); and finally applying said gamma correction function (Gamma) to every image channel (R, G or B) and obtaining a output image (I out ) and computing a contrast normalization process to said output image (I out ) and obtaining and final image (I final );
    • 一种用于生成更自然的图像的方法,系统和装置,其中所述方法的特征在于包括在用于处理图像的装置中执行的以下步骤:接收归一化图像; 计算亮度通道,计算所述亮度的直方图,计算所述直方图的累积直方图,估计与所述累积直方图的平均值相关的第一参数(Mid_X),用于所述累积直方图的小值的第二斜率参数(Gamma_L) 对所述累积直方图的大值进行第三斜率参数(Gamma_H),并且从所述累积直方图估计伽马校正函数(Gamma),其中所述伽马校正函数是(Mid_X),(Gamma_L)和(Gamma_H)的函数; 并且最终将所述伽马校正函数(Gamma)应用于每个图像通道(R,G或B)并获得输出图像(I out),并计算对所述输出图像(I out)的对比度归一化处理以及获得和最终图像 我最后);
    • 108. 发明公开
    • IMAGE PROCESSING METHOD WITH DETAIL-ENHANCING FILTER WITH ADAPTIVE FILTER CORE
    • 对细节增强滤波器和自适应滤波器核心图像处理
    • EP2817956A1
    • 2014-12-31
    • EP13752299.1
    • 2013-02-11
    • Flir Systems AB
    • OLSSON, Stefan
    • H04N1/409G06T5/50H04N5/21
    • G06T5/20G06T5/002G06T5/003G06T5/004G06T2207/10048G06T2207/20008G06T2207/20024G06T2207/20192H04N5/21
    • The invention relates to an image processing method for filtering with an adaptive filter core size, characterized in that the following steps are included: (a) an original image is created, (b) an information measure is calculated on the basis of the original image, (c) a filter core size is calculated on the basis of the information measure, (d) the original image is low-pass filtered with an adaptive low-pass filter with filter core size to form a low-pass filtered image, (e) a high-pass filtered image is calculated by subtracting the low-pass filtered image from the original image, (f) a detail -enhanced image without light rings is obtained by a high-pass image scaled with a detail enhancement measure being added to the low-pass image. The invention additionally relates to an image processing device comprising an image recording device 11), an image processing unit (12), and an image display unit (13), in which: (a) the recording device (11) creates an original image, (b) an image processing unit (12) calculates an information measure on the basis of the original image, (c) an image processing unit (12) calculates a filter core size on the basis of the information measure, (d) the image processing unit (12) low-pass filters the original image with an adaptive low-pass filter with filter core size to form a low-pass filtered image, (e) the image processing unit (12) calculates a high-pass filtered image by subtracting the low-pass filtered image from the original image, (f) the image processing unit (12) calculates a detail -enhanced image without light rings by adding a high-pass image scaled with a detail enhancement measure to the low-pass image, (g) the image display unit (13) visualizes the detail- enhanced image without light rings.