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公开(公告)号：US10218925B2
公开(公告)日：2019-02-26
申请号：US14719514
申请日：2015-05-22
Applicant: Huawei Technologies Co., Ltd.
Inventor： Shuiping Li , Angang Deng , Cong Xu
Abstract: The present invention discloses a method and an apparatus for correcting lens distortion. In some feasible implementation manners of the present invention, image data acquired from a lens is corrected in a horizontal direction; the image data corrected in the horizontal direction is written into a dynamic memory; image data in the dynamic memory is corrected in a vertical direction; and lens distortion correction is performed in two steps: in the horizontal direction and in the vertical direction, so that lens distortion correction is implemented at a low cost. The present invention further discloses a corresponding apparatus for correcting lens distortion.
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公开(公告)号：US20140010440A1
公开(公告)日：2014-01-09
申请号：US13928028
申请日：2013-06-26
Applicant: Huawei Technologies Co., LTD
Inventor： Shuiping Li
IPC: G06T5/00
CPC classification number: G06T5/001 , G06T5/003 , G06T5/20 , G06T2207/10024 , G06T2207/20012 , G06T2207/20192
Abstract: Embodiments of the present invention provide an image processing method and device. In the embodiments of the present invention, conversion processing is performed on an input image, which effectively eliminates an impact on image quality from such weather conditions as fog, dust-haze, sand storm and rain where atmospheric transparency is low, and can solve a problem in the prior art that image quality of a captured image or video is poor due to a scattering function of suspended particles in the atmosphere under such weather conditions as fog, dust-haze, sand storm and rain where atmospheric transparency is low, thereby improving contrast, saturation, and sharpness of an image or a video (namely, a multi-frame image). The technical solutions according to the present invention are easy to be implemented and have a low cost.
Abstract translation: 本发明的实施例提供一种图像处理方法和装置。 在本发明的实施例中，对输入图像进行转换处理，从而能够有效地消除由大气透明度低的雾，灰尘，沙尘暴，雨等天气条件对图像质量的影响， 现有技术的问题在于，在大气透明度低的雾，灰尘，沙尘暴，雨天等天气条件下，由于悬浮颗粒在大气中的散射作用，拍摄图像或视频的图像质量差，从而提高了 图像或视频（即，多帧图像）的对比度，饱和度和清晰度。 本发明的技术方案易于实现，成本低廉。
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Patent Agency Ranking
公开(公告)号：US09691137B2
公开(公告)日：2017-06-27
申请号：US14553774
申请日：2014-11-25
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xin Du , Shuiping Li
CPC classification number: G06T5/006 , G06T2207/30204
Abstract: Embodiments of the present invention disclose a radial distortion parameter acquiring method and apparatus. The method includes: randomly selecting a plane as a first plane; making an optical axis of a digital image capture device perpendicular to the first plane, and photographing the first plane to obtain a distorted image of the first plane; acquiring n arcs from the distorted image; and obtaining, by calculation, a radial distortion parameter of the digital image capture device according to the arcs. The apparatus includes: a selecting unit, a photographing unit, an acquiring unit, and a calculating unit. By applying the embodiments of the present invention, only one distorted image needs to be photographed to acquire a radial distortion parameter of a digital image capture device, and the distorted image can be acquired depending on a natural environment.
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公开(公告)号：US09374567B2
公开(公告)日：2016-06-21
申请号：US14719590
申请日：2015-05-22
Applicant: Huawei Technologies Co., Ltd.
Inventor： Shuiping Li , Hai Chen
CPC classification number: H04N9/646 , G06T3/4015 , G06T2207/10024 , G06T2207/20172 , H04N9/045
Abstract: An image processing method and apparatus, and an imaging device are provided. The method includes: obtaining a first green component value and a first red component value or first blue component value that are of the current pixel and obtained by using an interpolation algorithm, a minimum first-gradient value in horizontal and vertical directions, a minimum second-gradient value in inclined directions, a threshold for a green component, and a threshold for a red component or blue component; obtaining a corrected value of the green component and a corrected value of the red component or blue component of the current pixel; and obtaining a second green component value and a second red component value or second blue component value of the current pixel. The method may be used to reduce crosstalk of a color component in which the current pixel is located on other two color components obtained by interpolation.
Abstract translation: 提供了图像处理方法和装置以及成像装置。 该方法包括：获得当前像素并通过使用插值算法获得的第一绿色分量值和第一红色分量值或第一蓝色分量值，水平和垂直方向上的最小第一梯度值，最小二乘法 倾斜方向的梯度值，绿色分量的阈值和红色分量或蓝色分量的阈值; 获得当前像素的绿色分量的校正值和红色分量或蓝色分量的校正值; 以及获得当前像素的第二绿色分量值和第二红色分量值或第二蓝色分量值。 该方法可以用于减少当前像素位于通过插值获得的其他两个颜色分量上的颜色分量的串扰。
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公开(公告)号：US20150256805A1
公开(公告)日：2015-09-10
申请号：US14719590
申请日：2015-05-22
Applicant: Huawei Technologies Co., Ltd.
Inventor： Shuiping Li , Hai Chen
CPC classification number: H04N9/646 , G06T3/4015 , G06T2207/10024 , G06T2207/20172 , H04N9/045
Abstract: An image processing method and apparatus, and an imaging device are provided. The method includes: obtaining a first green component value and a first red component value or first blue component value that are of the current pixel and obtained by using an interpolation algorithm, a minimum first-gradient value in horizontal and vertical directions, a minimum second-gradient value in inclined directions, a threshold for a green component, and a threshold for a red component or blue component; obtaining a corrected value of the green component and a corrected value of the red component or blue component of the current pixel; and obtaining a second green component value and a second red component value or second blue component value of the current pixel. The method may be used to reduce crosstalk of a color component in which the current pixel is located on other two color components obtained by interpolation.
Abstract translation: 提供了图像处理方法和装置以及成像装置。 该方法包括：获得当前像素并通过使用插值算法获得的第一绿色分量值和第一红色分量值或第一蓝色分量值，水平和垂直方向上的最小第一梯度值，最小二乘法 倾斜方向的梯度值，绿色分量的阈值和红色分量或蓝色分量的阈值; 获得当前像素的绿色分量的校正值和红色分量或蓝色分量的校正值; 以及获得当前像素的第二绿色分量值和第二红色分量值或第二蓝色分量值。 该方法可以用于减少当前像素位于通过插值获得的其他两个颜色分量上的颜色分量的串扰。
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公开(公告)号：US20150256775A1
公开(公告)日：2015-09-10
申请号：US14719514
申请日：2015-05-22
Applicant: Huawei Technologies Co., Ltd.
Inventor： Shuiping Li , Angang Deng , Cong Xu
CPC classification number: H04N5/3572 , G06T3/0018 , G06T5/002 , G06T5/006
Abstract: The present invention discloses a method and an apparatus for correcting lens distortion. In some feasible implementation manners of the present invention, image data acquired from a lens is corrected in a horizontal direction; the image data corrected in the horizontal direction is written into a dynamic memory; image data in the dynamic memory is corrected in a vertical direction; and lens distortion correction is performed in two steps: in the horizontal direction and in the vertical direction, so that lens distortion correction is implemented at a low cost. The present invention further discloses a corresponding apparatus for correcting lens distortion.
Abstract translation: 本发明公开了一种用于校正透镜变形的方法和装置。 在本发明的一些可行的实施方式中，从透镜获取的图像数据在水平方向上被校正; 将在水平方向上校正的图像数据写入动态存储器; 动态存储器中的图像数据在垂直方向上被校正; 并且在水平方向和垂直方向两个步骤中执行透镜畸变校正，使得以低成本实现透镜畸变校正。 本发明还公开了一种用于校正透镜变形的相应装置。
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公开(公告)号：US09098895B2
公开(公告)日：2015-08-04
申请号：US13928028
申请日：2013-06-26
Applicant: Huawei Technologies Co., LTD
Inventor： Shuiping Li
CPC classification number: G06T5/001 , G06T5/003 , G06T5/20 , G06T2207/10024 , G06T2207/20012 , G06T2207/20192
Abstract: Embodiments of the present invention provide an image processing method and device. In the embodiments of the present invention, conversion processing is performed on an input image, which effectively eliminates an impact on image quality from such weather conditions as fog, dust-haze, sand storm and rain where atmospheric transparency is low, and can solve a problem in the prior art that image quality of a captured image or video is poor due to a scattering function of suspended particles in the atmosphere under such weather conditions as fog, dust-haze, sand storm and rain where atmospheric transparency is low, thereby improving contrast, saturation, and sharpness of an image or a video (namely, a multi-frame image). The technical solutions according to the present invention are easy to be implemented and have a low cost.
Abstract translation: 本发明的实施例提供一种图像处理方法和装置。 在本发明的实施例中，对输入图像进行转换处理，从而能够有效地消除由大气透明度低的雾，灰尘，沙尘暴，雨等天气条件对图像质量的影响， 现有技术的问题在于，在大气透明度低的雾，灰尘，沙尘暴，雨天等天气条件下，由于悬浮颗粒在大气中的散射作用，拍摄图像或视频的图像质量差，从而提高了 图像或视频（即，多帧图像）的对比度，饱和度和清晰度。 本发明的技术方案易于实现，成本低廉。
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