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    • 1. 发明申请
    • DETERMINING RELEVANCE VALUES
    • 确定相关值
    • WO2005076212A1
    • 2005-08-18
    • PCT/IB2005/050400
    • 2005-01-31
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.TEGENBOSCH, Jeroen, A., P.
    • TEGENBOSCH, Jeroen, A., P.
    • G06T5/00
    • G06T5/002G06T5/20G06T7/12G06T2207/20012G06T2207/20192
    • A pixel relevance determining unit (100) for determining relevance values for respective pixels of an image is disclosed. The pixel relevance determining unit (100) comprises edge determining means (102) for determining a first edge orientation for a first one of the pixels (300) on basis of a first group of pixel values and for determining a second edge orientation for a second one of the pixels (308) on basis of a second group of pixel values, the second one of the pixels (308) being located in a neighborhood of the first one of the pixels (300); and assigning means (104) for assigning a first one of the relevance values corresponding to the first one of the pixels (300), on basis of comparing the first edge orientation with the second edge orientation.
    • 公开了一种用于确定图像的各个像素的相关性值的像素相关性确定单元(100)。 像素相关性确定单元(100)包括边缘确定装置(102),用于基于第一组像素值确定第一像素(300)的第一边缘取向,并且用于确定第二边缘取向 基于第二组像素值的像素(308)中的一个,像素(308)中的第二像素(308)位于像素(300)中的第一组像素(300)的附近; 以及分配装置(104),用于基于将第一边缘取向与第二边缘方向进行比较来分配对应于像素(300)中的第一个的相关性值中的第一个。
    • 4. 发明申请
    • IMAGE ENHANCEMENT
    • 图像增强
    • WO2005020146A1
    • 2005-03-03
    • PCT/IB2004/051433
    • 2004-08-10
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.TEGENBOSCH, Jeroen, A., P.DE HAAN, Gerard
    • TEGENBOSCH, Jeroen, A., P.DE HAAN, Gerard
    • G06T5/00
    • G06T5/003G06T7/13G06T2207/20164G06T2207/20192
    • A method of converting an input image into an enhanced output image is disclosed. The method comprises: detecting (606) whether a particular pixel of the input image corresponds to an edge in the input image; establishing (606) an orientation for the particular pixel; and computing a final pixel value of the enhanced output image, corresponding to the particular pixel, by means of an orientation dependent sharpening filtering operation on basis of the particular pixel and a number of pixels being located in a spatial neighborhood of the particular pixel, the orientation dependent sharpening filtering having a first component (702) and a second component (704), a first angle between a first orientation of the first component and the established orientation of the particular pixel being equal to a first predetermined value and a second angle between a second orientation of the second component and the established orientation of the particular pixel being equal to a second predetermined value, the second orientation and the first orientation being mutually different.
    • 公开了一种将输入图像转换为增强输出图像的方法。 该方法包括:检测(606)输入图像的特定像素是否对应于输入图像中的边缘; 建立(606)所述特定像素的取向; 以及基于所述特定像素和位于所述特定像素的空间邻域中的多个像素,通过基于取向的锐化滤波操作来计算对应于所述特定像素的所述增强输出图像的最终像素值, 具有第一部件(702)和第二部件(704)的取向相关锐化滤波,第一部件的第一取向和特定像素的已建立取向之间的第一角度等于第一预定值,以及第二角度 所述第二分量的第二取向和所述特定像素的已建立取向等于第二预定值,所述第二取向和所述第一取向相互不同。
    • 5. 发明申请
    • METHOD AND APPARATUS FOR IMAGE ENHANCEMENT
    • 图像增强的方法和装置
    • WO2008026150A1
    • 2008-03-06
    • PCT/IB2007/053418
    • 2007-08-27
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.MUIJS, Remco, T., J.TEGENBOSCH, Jeroen, A., P.
    • MUIJS, Remco, T., J.TEGENBOSCH, Jeroen, A., P.
    • G06T5/00H04N1/409G06T5/50
    • G06T5/007G06T2207/10024G06T2207/20016G06T2207/20021H04N1/409
    • The invention relates to an apparatus and a method for computing an output image (145) on the basis of an input image (100). The method comprises the steps of splitting (105) the input image (100) into multiple sub-images, each sub-image comprising information from a respective frequency band of the input image (100), calculating (110) a pixel headroom signal quantifying the margin available for enhancement of pixel values of pixels in the input image (100), calculating (115) pixel enhancement factors for pixels within sub-images to be modified in dependence upon the pixel headroom signal, such that the margin as quantified by the pixel headroom signal is spread across the respective sub-images to be modified, modifying (120) the respective sub-images by using the pixel enhancement factors and the corresponding pixel values from the respective sub-images, and generating (135) the output image (145) by using the modified sub-images. The present invention also relates to an image signal comprising pixel values forming an image (100) and a set of pixel enhancement factors allowing enhancement of the image.
    • 本发明涉及一种用于基于输入图像(100)计算输出图像(145)的装置和方法。 该方法包括以下步骤:将输入图像(100)分割成多个子图像,每个子图像包括来自输入图像(100)的相应频带的信息,计算(110)量化像素余量信号 可用于增强输入图像(100)中的像素的像素值的边缘,根据像素余量信号计算(115)要修改的子图像内的像素的像素增强因子,使得由 像素净空信号分布在要修改的各个子图像上,通过使用来自各个子图像的像素增强因子和相应的像素值来修改(120)各个子图像,并且生成(135)输出图像 (145)通过使用修改的子图像。 本发明还涉及包括形成图像(100)的像素值和允许图像增强的一组像素增强因子的图像信号。