发明名称 |
Method and apparatus for implementing image denoising |
摘要 |
A method for implementing image denoising is provided. The method includes: calculating a tangent value of each pixel; determining whether a modulus value of the tangent value of each pixel is less than a preset threshold, if yes, determining a corresponding pixel as a non-boundary point of the image, and performing bilateral filter on a pixel determined as a non-boundary point of the image and pixels which are around the pixel and of which distances to the pixel are less than or equal to a first filtering radius; and if not, determining a corresponding pixel as a boundary point of the image, and performing bilateral filter on a pixel determined as a boundary point of the image and pixels whose distances along tangent directions and opposite directions of the tangent directions to the pixel are less than or equal to a second filtering radius. |
申请公布号 |
US9489722(B2) |
申请公布日期 |
2016.11.08 |
申请号 |
US201515100593 |
申请日期 |
2015.01.15 |
申请人 |
Tencent Technology (Shenzhen) Company Limited |
发明人 |
Jiang Deqiang |
分类号 |
G06K9/40;G06T5/00;G06T5/20 |
主分类号 |
G06K9/40 |
代理机构 |
Brinks Gilson & Lione |
代理人 |
Brinks Gilson & Lione |
主权项 |
1. A method for implementing image denoising, comprising:
calculating an abscissa gradient value and an ordinate gradient value of each pixel of an image; calculating a tangent value of each pixel by using a structure tensor and according to the abscissa gradient value and the ordinate gradient value of each pixel; determining whether a modulus value of the tangent value of each pixel is less than a preset threshold, when the modulus value of the tangent value of each pixel is less than the preset threshold, determining a corresponding pixel as a non-boundary point of the image, when the modulus value of the tangent value of each pixel is more than or equal to the preset threshold, determining a corresponding pixel as a boundary point of the image; and performing bilateral filter on a pixel determined as a non-boundary point of the image and pixels which are around the pixel and of which distances to the pixel are less than or equal to a first filtering radius, and performing bilateral filter on a pixel determined as a boundary point of the image and pixels whose distances to the pixel along tangent directions and opposite directions of the tangent directions are less than or equal to a second filtering radius. |
地址 |
Shenzhen CN |