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1. 发明授权

US6061477A Quality image warper 失效
标题翻译：质量图像整形机
公开(公告)号：US6061477A
公开(公告)日：2000-05-09
申请号：US838101
申请日：1997-04-15
申请人： Mark S. Lohmeyer , Peter Jeffrey Burt , Gooitzen Siemen van der Wal
发明人： Mark S. Lohmeyer , Peter Jeffrey Burt , Gooitzen Siemen van der Wal
IPC分类号： H04N5/262 , G06T3/00 , G06T3/40 , H04N1/387 , G06K9/32
CPC分类号： G06T3/4007 , G06T3/4084
摘要： A digital image warper system produces a warped output image from an input image. The warper system increases the sampling rate of a sampled image above the Nyquist rate or samples an analog image at a higher rate than the Nyquist rate and prefilters the upsampled image to counteract filtering which may occur during the warping operation. The upsampled image is warped using an interpolator for resampling to produce a warped upsampled image. The interpolator is, for example, a low quality interpolator such as a bilinear interpolator. The warped image is then down-sampled to the same resolution as the input image to produce the warped image. Down-sampling and warping can be combined into one step by modifying the geometric transformation function implemented when warping the upsampled image.
摘要翻译：数字图像整经系统从输入图像产生翘曲输出图像。整经系统将采样图像的采样率提高到奈奎斯特速率以上，或以比奈奎斯特速率更高的速率采样模拟图像，并对上采样图像进行预滤波，以抵消在翘曲操作期间可能发生的滤波。上采样图像使用内插器进行扭曲以进行重采样以产生翘曲的上采样图像。内插器例如是诸如双线性内插器的低质量插值器。然后将翘曲的图像下采样到与输入图像相同的分辨率以产生翘曲图像。下采样和翘曲可以通过修改在对上采样图像进行翘曲时实现的几何变换函数而组合成一个步骤。

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