公开(公告)号：US09432589B2

公开(公告)日：2016-08-30

申请号：US13968092

申请日：2013-08-15

Applicant: OmniVision Technologies, Inc.

Inventor： Jiangtao Kuang ,  Donghui Wu ,  Jizhang Shan

IPC: H04N5/357 ,  G06T5/40 ,  G06T5/00 ,  H04N5/235 ,  H04N5/355

CPC classification number: H04N5/2355 ,  G06T5/002 ,  G06T5/40 ,  G06T2207/20208 ,  H04N5/2353 ,  H04N5/35581

Abstract: A method determines a pixel value in a high dynamic range image from two images of different brightness by obtaining corresponding input pixel intensities from the two images, determining combination weights, and calculating the pixel value in the high dynamic range image as a weighted average of the input pixel intensities. Another method determines a pixel value in a high dynamic range image from more than two images by forming pairs of corresponding input pixel intensities, determining relative combination weights for the input pixels intensities for each pair, applying a normalization condition to determine absolute combination weights, and calculating the pixel value in the high dynamic range image as a weighted average of the input pixel intensities. Systems for generating high dynamic range image generation from two or more input images include a processor, a memory, a combination weight module, and a pixel value calculation module.

Abstract translation: 一种方法通过从两个图像获得相应的输入像素强度，确定组合权重，并计算高动态范围图像中的像素值，来确定来自两个不同亮度的图像的高动态范围图像中的像素值，作为加权平均值 输入像素强度。 另一种方法通过形成相应的输入像素强度对来确定来自两个以上图像的高动态范围图像中的像素值，确定每对输入像素强度的相对组合权重，应用归一化条件来确定绝对组合权重，以及 计算高动态范围图像中的像素值作为输入像素强度的加权平均值。 用于从两个或多个输入图像生成高动态范围图像生成的系统包括处理器，存储器，组合权重模块和像素值计算模块。

公开(公告)号：US09307215B1

公开(公告)日：2016-04-05

申请号：US14577313

申请日：2014-12-19

Applicant: OmniVision Technologies, Inc.

Inventor： Changmeng Liu ,  Chengming Liu ,  Jizhang Shan

IPC: H04N9/73 ,  G06T7/40

CPC classification number: H04N9/735

Abstract: A system for brightness-sensitive automatic white balancing of an electronic color image includes a processor and a memory with (a) brightness-specific color-weighting maps each specifying illuminant-specific auto white balance parameters, (b) brightness range definitions respectively indicating applicability range of the brightness-specific color-weighting maps, and (c) instructions for white balancing the electronic color image according to scene brightness and based upon the brightness-specific color-weighting maps. A system for adaptive automatic white balancing of an electronic color image includes a processor and a memory having (a) a color-weighting map specifying a probability distribution of color ratios defining auto white balance parameters, the probability distribution composed of a plurality of illuminant-specific probability distributions respectively associated with a plurality of different spectral types of illuminant, and (b) instructions for processing one or more electronic color images to refine at least one of the plurality of illuminant-specific probability distributions.

Abstract translation: 用于电子彩色图像的亮度自动白平衡的系统包括处理器和存储器，其具有（a）亮度特定的颜色加权，每个指定特定照明特定的自动白平衡参数，（b）分别指示适用性的亮度范围定义 亮度特定颜色加权映射的范围，以及（c）根据场景亮度和基于亮度特定颜色加权映射来平衡电子彩色图像的指令。 一种用于电子彩色图像的自适应自动白平衡的系统包括处理器和存储器，所述存储器具有（a）颜色加权映射，其指定定义自动白平衡参数的颜色比率的概率分布，所述概率分布由多个光源 - 分别与多个不同光谱类型的光源相关联的特定概率分布，以及（b）用于处理一个或多个电子彩色图像以提炼多个光源特定概率分布中的至少一个的指令。

公开(公告)号：US09131284B2

公开(公告)日：2015-09-08

申请号：US13734514

申请日：2013-01-04

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Guannho George Tsau ,  Jizhang Shan ,  Hui Pan ,  Kah-Ong Tan

IPC: H04N7/18 ,  H04N7/14 ,  G06K9/36 ,  H04N21/81 ,  H04N21/414 ,  H04N21/4223 ,  H04N21/44 ,  H04N19/29 ,  H04N21/4402 ,  H04N19/597 ,  H04N19/23 ,  H04M1/02

CPC classification number: H04N21/816 ,  H04M1/0264 ,  H04N19/23 ,  H04N19/29 ,  H04N19/597 ,  H04N21/41407 ,  H04N21/4223 ,  H04N21/44008 ,  H04N21/440227

Abstract: A mobile computing device includes first, second and third cameras coupled to produce first, second and third camera video streams, respectively. The first camera is on a first side of the mobile computing device, and the second and third cameras are included in a stereo camera on a second side of the mobile computing device. A video processor is coupled to generate an output video stream including a first video layer generated from the first camera video stream. The video processor is further coupled to generate the output video stream to include second and third video layers from the second camera video stream in response to the second and the third camera video streams. The video processor is further coupled to overlay the first video layer between the second video layer and the third video layer in the output video stream.

Abstract translation: 移动计算设备包括分别耦合以产生第一，第二和第三摄像机视频流的第一，第二和第三摄像机。 第一相机位于移动计算设备的第一侧，并且第二和第三相机包括在移动计算设备的第二侧上的立体相机中。 视频处理器被耦合以产生包括从第一摄像机视频流生成的第一视频层的输出视频流。 视频处理器还被耦合以响应于第二和第三摄像机视频流而产生输出视频流以包括来自第二摄像机视频流的第二和第三视频层。 视频处理器还被耦合以在输出视频流中的第二视频层和第三视频层之间覆盖第一视频层。

公开(公告)号：US20150102993A1

公开(公告)日：2015-04-16

申请号：US14050778

申请日：2013-10-10

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Hasan Gadjali ,  Jin Li ,  Jizhang Shan

IPC: G06F3/00 ,  G06F3/03 ,  G06F3/038

CPC classification number: G06F3/038 ,  G06F3/0416 ,  G06F3/0425

Abstract: A projector-camera system includes a projector coupled to back project a first image on a translucent diffusing screen. A camera is coupled to capture a second image from a back side of the translucent diffusing screen. The second image includes the first image back projected on the translucent diffusing screen and a shadow of a pointing device cast on a front side of the translucent diffusing screen. The pointing device is on the front side of the translucent diffusing screen and is in close proximity to the translucent diffusing screen. A processing block is coupled to the projector and the camera to generate a third image including the shadow of the pointing device. The processing block is further coupled to activate a command in a main computer coupled to the processing block in response to a relative position of the shadow of the pointing device in the third image.

Abstract translation: 投影仪相机系统包括投影仪，其连接到背投影在半透明漫射屏幕上的第一图像。 耦合相机以从半透明漫射屏幕的背面捕获第二图像。 第二图像包括投影在半透明漫射屏幕上的第一图像和投射在半透明漫射屏幕的前侧上的指示设备的阴影。 指示装置位于半透明漫射屏幕的正面，并且靠近半透明漫射屏幕。 处理块耦合到投影仪和相机以产生包括指示设备的阴影的第三图像。 处理块还被耦合以响应于指示设备在第三图像中的阴影的相对位置来激活耦合到处理块的主计算机中的命令。

公开(公告)号：US20150009361A1

公开(公告)日：2015-01-08

申请号：US13933674

申请日：2013-07-02

Applicant: OmniVision Technologies, Inc.

Inventor： Chengming Liu ,  Jizhang Shan ,  Donghui Wu

IPC: H04N5/235

CPC classification number: H04N5/2352 ,  H04N5/2356

Abstract: An example method of multi-target automatic exposure and gain control based on pixel intensity distribution includes capturing a series of digital images with an image sensor. As the series of digital images are captured, exposure time and/or gain are adjusted to adjust a mean intensity value of the digital images until a target mean intensity value is reached. The method includes dynamically selecting the target mean intensity value from a plurality of target mean intensity values based on a relative number of pixels, in each captured digital image, that have an intensity value that falls outside a range of intensity values.

Abstract translation: 基于像素强度分布的多目标自动曝光和增益控制的示例方法包括用图像传感器捕获一系列数字图像。 当捕获一系列数字图像时，调整曝光时间和/或增益以调整数字图像的平均强度值，直到达到目标平均强度值。 该方法包括基于在每个捕获的数字图像中具有落在强度值范围之外的强度值的像素的相对数目，从多个目标平均强度值中动态地选择目标平均强度值。

公开(公告)号：US20140118572A1

公开(公告)日：2014-05-01

申请号：US14148078

申请日：2014-01-06

Applicant: OmniVision Technologies, Inc.

Inventor： Jiangtao Kuang ,  Donghui Wu ,  Jizhang Shan

IPC: H04N9/04 ,  H01L27/146

CPC classification number: H04N9/045 ,  H01L27/14625 ,  H04N5/343 ,  H04N2209/045

Abstract: An image sensor includes an array of light sensitive elements and a filter array. Each filter element is in optical communication with a respective light sensitive element. The image sensor receives filtered light having a repeating pattern. Light sensitive elements in at least two successive rows alternately receive light having a first color and a second color, and light sensitive elements in common columns of the successive rows alternately receive light having the first color and the second color. Light sensitive elements in at least two additional successive rows alternately receive light having a third and a fourth color, and light sensitive elements in common columns of the additional successive rows alternately receive light having the third color and the fourth color. Output values of pairs of sampled light sensitive elements receiving light of a common color and from successive rows are combined to generate a down-sampled image.

Abstract translation: 图像传感器包括光敏元件阵列和滤光片阵列。 每个滤光元件与相应的光敏元件光学连通。 图像传感器接收具有重复图案的滤波光。 在至少两个连续行中的感光元件交替地接收具有第一颜色和第二颜色的光，并且连续行的公共列中的光敏元件交替地接收具有第一颜色和第二颜色的光。 在至少两个附加连续行中的感光元件交替地接收具有第三和第四颜色的光，并且附加连续行的公共列中的光敏元件交替地接收具有第三颜色和第四颜色的光。 接收公共颜色光和连续行的采样光敏元件对的输出值被组合以产生下采样图像。

公开(公告)号：US09681083B2

公开(公告)日：2017-06-13

申请号：US14738744

申请日：2015-06-12

Applicant: OMNIVISION TECHNOLOGIES, INC.

Inventor： Jie Shen ,  Jizhang Shan

IPC: H04N5/378 ,  H04N5/235 ,  H04N5/353 ,  H04N5/355

CPC classification number: H04N5/378 ,  H04N5/2357 ,  H04N5/3532 ,  H04N5/35581

Abstract: A method of detecting light-emitting diode (LED) light starts with a control circuitry generating a shutter signal that is transmitted to a pixel array to control image acquisition by the pixel array and to establish a set exposure time. The readout circuitry may then read out the image data from the pixel array that includes reading out the image data from a plurality of successive and overlapped frames having the set exposure time. The set exposure time may be the same for each of the frames. The successive and overlapped frames may be interlaced frames. Other embodiments are also described.

公开(公告)号：US20170041525A1

公开(公告)日：2017-02-09

申请号：US14819021

申请日：2015-08-05

Applicant: OmniVision Technologies, Inc.

Inventor： Guansong Liu ,  Jizhang Shan ,  Chin Poh Pang ,  Xiaodong Yang

IPC: H04N5/232 ,  G02B7/36 ,  G02B5/20 ,  G03B13/36

CPC classification number: H04N5/23212 ,  G02B5/201 ,  G02B7/36 ,  G03B13/36 ,  H04N9/045

Abstract: An imaging system with on-chip phase-detection includes an image sensor with symmetric multi-pixel phase-difference detectors. Each symmetric multi-pixel phase-difference detector includes (a) a plurality of pixels forming an array and each having a respective color filter thereon, each color filter having a transmission spectrum and (b) a microlens at least partially above each of the plurality of pixels and having an optical axis intersecting the array. The array, by virtue of each transmission spectrum, has reflection symmetry with respect to both (a) a first plane that includes the optical axis and (b) a second plane that is orthogonal to the first plane. The imaging system includes a phase-detection row pair, which includes a plurality of symmetric multi-pixel phase-difference detectors in a pair of adjacent pixel rows and a pair, and an analogous phase-detection column pair.

Abstract translation: 具有片上相位检测的成像系统包括具有对称多像素相位差检测器的图像传感器。 每个对称多像素相位差检测器包括（a）形成阵列的多个像素，每个具有各自的滤色器，每个滤色器具有透射光谱，和（b）至少部分地高于每个多个像素的微透镜 的像素并且具有与阵列相交的光轴。 该阵列凭借每个透射光谱具有相对于（a）包括光轴的第一平面和（b）与第一平面正交的第二平面的反射对称性。 成像系统包括相位检测行对，其包括一对相邻像素行和一对中的多个对称多像素相位差检测器，以及类似的相位检测列对。

公开(公告)号：US20160344961A1

公开(公告)日：2016-11-24

申请号：US14714997

申请日：2015-05-18

Applicant: OmniVision Technologies,Inc.

Inventor： Chengjun Li ,  Guansong Liu ,  Jizhang Shan ,  Chin Poh Pang

IPC: H04N5/369 ,  H04N9/04 ,  H04N5/232

CPC classification number: H04N5/3696 ,  H04N5/23212 ,  H04N9/045

Abstract: An image sensor for on-chip phase detection includes a pixel array for capturing an image of a scene, wherein the pixel array has a plurality of horizontal phase-detection rows, each including phase-detection pixels for detecting horizontal change in the scene, and a plurality of vertical phase-detection columns, each including phase-detection pixels for detecting vertical change in the scene, and wherein each of the horizontal phase-detection rows intersects each of the vertical phase-detection columns. A phase-detection method includes generating a pair of horizontal line profiles using one of a plurality of phase-detection rows; generating a pair of vertical line profiles using one of a plurality of phase-detection columns intersecting with the one of a plurality of phase-detection rows; and determining phase shift associated with at least one arbitrarily oriented edge in a scene, based upon the pair of horizontal line profiles and the pair of vertical line profiles.

Abstract translation: 一种用于片上相位检测的图像传感器包括用于捕获场景图像的像素阵列，其中，像素阵列具有多个水平相位检测行，每个水平相位检测行包括用于检测场景中的水平变化的相位检测像素，以及 多个垂直相位检测列，每个垂直相位检测列包括用于检测场景中的垂直变化的相位检测像素，并且其中每个水平相位检测行与每个垂直相位检测列相交。 相位检测方法包括使用多个相位检测行中的一个生成一对水平线轮廓; 使用与多个相位检测行中的一个相交叉的多个相位检测列中的一个生成一对垂直线轮廓; 以及基于所述一对水平线轮廓和所述一对垂直线轮廓来确定与场景中的至少一个任意取向的边缘相关联的相移。

公开(公告)号：US09319585B1

公开(公告)日：2016-04-19

申请号：US14574761

申请日：2014-12-18

Applicant: OmniVision Technologies, Inc.

Inventor： Chengming Liu ,  Jizhang Shan ,  Guansong Liu

IPC: H04N5/232 ,  H04N5/265 ,  H04N9/09 ,  H04N9/07

CPC classification number: H04N9/09 ,  H04N5/2258 ,  H04N5/23232 ,  H04N5/265 ,  H04N9/045 ,  H04N9/07

Abstract: A method of generating a high resolution color image includes focusing a first image onto a monochrome image sensor having a P resolution and focusing a second image onto a color image sensor having a Q resolution, where Q

Abstract translation: 产生高分辨率彩色图像的方法包括将第一图像聚焦到具有P分辨率的单色图像传感器上并将第二图像聚焦到具有Q分辨率的彩色图像传感器上，其中Q