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Sharpening Algorithm For Images based on Polar Coordinates

机译:基于极坐标的图像锐化算法

摘要

A system and method are disclosed that perform sharpening of an image to remove or reduce the noise component in the Euclidian and polar dimensions of the image. A sharpening module receives an unprocessed image. A plurality of sub-images are determined from the received image. For each sub-image, a plurality of pixels of the sub-image are rotated based on a specific rotation angle. A sagittal and a tangential function of the plurality of pixels are determined for a specific radius of the camera lens. A sharpening function is applied to the sagittal and tangential functions of the plurality of pixels of the rotated sub-image. The sharpened sub-image is inverse rotated based on a rotation angle to revert it to its original orientation. The sharpened sub-images are blended at their edges to remove discontinuities between the sub-images.
机译:公开了一种系统和方法,其执行图像的锐化以去除或减小图像的欧几里德和极坐标中的噪声分量。锐化模块接收未处理的图像。从接收到的图像确定多个子图像。对于每个子图像,子图像的多个像素基于特定的旋转角度而旋转。针对相机镜头的特定半径确定多个像素的弧矢和切线函数。锐化函数被应用于旋转子图像的多个像素的弧矢和切线函数。锐化的子图像根据旋转角度反向旋转,以将其还原为原始方向。锐化的子图像在其边缘融合,以消除子图像之间的不连续性。

著录项

  • 公开/公告号US2017148145A1

    专利类型

  • 公开/公告日2017-05-25

    原文格式PDF

  • 申请/专利权人 GOPRO INC.;

    申请/专利号US201615212132

  • 发明设计人 SCOTT PATRICK CAMPBELL;

    申请日2016-07-15

  • 分类号G06T5/00;G06T3/60;G06T7/00;

  • 国家 US

  • 入库时间 2022-08-21 13:49:53

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