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21. 发明申请

US20050226539A1 Zoom algorithm 有权
标题翻译：缩放算法
公开(公告)号：US20050226539A1
公开(公告)日：2005-10-13
申请号：US10830154
申请日：2004-04-22
申请人： Detlef Schweng
发明人： Detlef Schweng
IPC分类号： G06K9/36 , G06T3/40
CPC分类号： G06T3/403
摘要： Methods to zoom a region of interest from a digital image have been achieved. The methods invented support according to the scale of zooming the decrease or the increase of the resolution of digital images. The region of interest to be zoomed is variable; the destination image has a fixed size. In case of a decrease of the resolution of the region of interest the method invented combines interpolating source pixels to calculate the color values of the destination pixels and omitting some rows of source pixels. In case of enlargement the method invented combines interpolation of the source pixels to calculate the color values of the destination pixels, extrapolation of the destination pixels being close to the edge of the image, and replication of some of the interpolated rows of the destination image to gain additional rows according to the scale of the increase of resolution (enlargement) of a digital image.
摘要翻译：已经实现了从数字图像缩放感兴趣区域的方法。根据缩放数字图像分辨率的降低或增加的规模，发明了支持方法。要放大的兴趣区域是可变的; 目的地图像具有固定大小。在感兴趣区域的分辨率降低的情况下，发明的方法组合内插源像素以计算目的地像素的颜色值并省略一些源像素行。在放大的情况下，发明的方法组合源像素的内插以计算目标像素的颜色值，目标像素的外推近似于图像的边缘，以及目的地图像的一些内插行的复制到根据数字图像的分辨率（扩大）的增加的规模增加行。

22. 发明申请

US20050179793A1 Lens shading algorithm 有权
标题翻译：镜头遮光算法
公开(公告)号：US20050179793A1
公开(公告)日：2005-08-18
申请号：US10796385
申请日：2004-03-09
申请人： Detlef Schweng
发明人： Detlef Schweng
IPC分类号： G01J5/02 , G06T5/00 , H04N5/217 , H04N9/64
CPC分类号： H04N5/217 , G06T5/008 , H04N1/401 , H04N5/3572
摘要： A method used for the compensation of vignetting in digital cameras has been achieved. The compensation for vignetting is performed by multiplying pixel output of the sensor array with a correction factor. In a preferred embodiment of the invention all pixels are multiplied with an adequate correction factor. Alternatively pixels, being close to the center of the sensor array, can be left unchanged. Said correction factor can be calculated in a very fast and efficient way by using two constant factors describing the specific geometry of the lens/sensor array system and by multiplying a first of said factors with the square of the distance between a pixel and the center of the sensor array and by multiplying a second of said factors with the distance between a pixel and the center of the sensor array to the power of four. The result of the second multiplication is subtracted from the result of the first multiplication and this result is added to one to get the final correction factor. Each original pixel output is multiplied with said correction factor to get output data compensated for the vignetting effects of the lens.
摘要翻译：已经实现了用于数码相机中渐晕补偿的方法。渐晕补偿通过将传感器阵列的像素输出与校正因子相乘来进行。在本发明的优选实施例中，所有像素都乘以适当的校正因子。替代地，靠近传感器阵列的中心的像素可以保持不变。所述校正因子可以通过使用描述透镜/传感器阵列系统的特定几何的两个常数因子，并且通过将所述因子中的第一个与像素和像素的中心之间的距离的平方相乘来以非常快速和有效的方式计算传感器阵列，并将所述因子中的第二个与传感器阵列的像素和中心之间的距离乘以4的幂。从第一次乘法的结果中减去第二乘法的结果，并将该结果加到一个以得到最终校正因子。每个原始像素输出与所述校正因子相乘以获得用于透镜的渐晕效果的输出数据。

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