公开(公告)号：US09533618B2

公开(公告)日：2017-01-03

申请号：US14642510

申请日：2015-03-09

Applicant: Texas Instruments Incorporated

Inventor： Buyue Zhang ,  Ibrahim Pekkucuksen ,  Vikram Appia ,  Aziz Umit Batur

IPC: B60R1/00 ,  G06T3/40

CPC classification number: B60R1/00 ,  B60R2300/303 ,  B60R2300/607 ,  G06T3/4038

Abstract: A method, apparatus and a system multi-camera image processing method. The method includes performing geometric alignment to produce a geometric output, performing photometric alignment to produce a photometric output and blending output, using data from the geometric alignment and the photometric alignment for performing synthesis function for at least one of blending and stitching images from the multi-cameras, and displaying an image from the synthesis function.

Abstract translation: 一种方法，装置和系统的多摄像机图像处理方法。 该方法包括执行几何对准以产生几何输出，执行光度对准以产生光度输出和混合输出，使用来自几何对准和光度对准的数据，用于执行来自多重图像的混合和拼接图像中的至少一个的合成功能 - 相机，并从合成功能显示图像。

公开(公告)号：US09355436B2

公开(公告)日：2016-05-31

申请号：US13659478

申请日：2012-10-24

Applicant: Texas Instruments Incorporated

Inventor： Buyue Zhang ,  Aziz Umit Batur

IPC: G06T15/00 ,  G06T5/00 ,  H04N13/00

CPC classification number: G06T5/005 ,  G06T15/00 ,  G06T2200/04 ,  G06T2207/10028 ,  G06T2207/20012 ,  H04N2013/0081

Abstract: A first depth map is generated in response to a stereoscopic image from a camera. The first depth map includes first pixels having valid depths and second pixels having invalid depths. In response to the first depth map, a second depth map is generated for replacing at least some of the second pixels with respective third pixels having valid depths. For generating the second depth map, a particular one of the third pixels is generated for replacing a particular one of the second pixels. For generating the particular third pixel, respective weight(s) is/are assigned to a selected one or more of the first pixels in response to value similarity and spatial proximity between the selected first pixel(s) and the particular second pixel. The particular third pixel is computed in response to the selected first pixel(s) and the weight(s).

Abstract translation: 响应于来自相机的立体图像产生第一深度图。 第一深度图包括具有有效深度的第一像素和具有无效深度的第二像素。 响应于第一深度图，生成第二深度图，用于用具有有效深度的相应第三像素替换至少一些第二像素。 为了生成第二深度图，生成第三像素中的特定的一个以替换第二像素中的特定的一个。 为了产生特定的第三像素，响应于所选择的第一像素和特定第二像素之间的值相似性和空间接近度，将相应的权重分配给所选择的一个或多个第一像素。 响应于所选择的第一像素和权重来计算特定的第三像素。

公开(公告)号：US20150139568A1

公开(公告)日：2015-05-21

申请号：US14546957

申请日：2014-11-18

Applicant: Texas Instruments Incorporated

Inventor： Yucheng Liu ,  Buyue Zhang

IPC: G06T11/60 ,  G06T7/00

CPC classification number: G06T7/33 ,  G06T3/0012

Abstract: A method, apparatus and a surround view camera system for determining the optimal seem for a surround view camera system. The method includes determining the corrected side view image at bird-eye perspective, generating a cost map for overlapping region, finding a minimum cost seam for each overlapping region, computing weight based on distance to the seam, if blending of the pixel, and blending the pixel, synthesizing composite view, and generating a composite view image.

Abstract translation: 一种用于确定环绕立体照相机系统的最佳图像的方法，装置和环绕视图相机系统。 该方法包括：以鸟瞰视角确定校正侧视图像，生成重叠区域的成本图，找出每个重叠区域的最小成本接缝，基于距接缝的距离计算权重，如果混合像素，以及混合 像素，合成复合视图，以及生成复合视图图像。

公开(公告)号：US20160012570A1

公开(公告)日：2016-01-14

申请号：US14866112

申请日：2015-09-25

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Buyue Zhang ,  Aziz Umit Batur

IPC: G06T5/00 ,  G06T7/40 ,  G06T5/20

CPC classification number: G06T5/002 ,  G06T3/4015 ,  G06T5/009 ,  G06T5/20 ,  G06T5/50 ,  G06T7/90 ,  G06T2207/10024 ,  G06T2207/20208 ,  H04N3/155 ,  H04N5/235 ,  H04N5/2355 ,  H04N9/68

Abstract: A method of transforming an N-bit raw wide dynamic range (WDR) Bayer image to a K-bit raw red-green-blue (RGB) image wherein N>K is provided that includes converting the N-bit raw WDR Bayer image to an N-bit raw RGB image, computing a luminance image from the N-bit raw RGB image, computing a pixel gain value for each luminance pixel in the luminance image to generate a gain map, applying a hierarchical noise filter to the gain map to generate a filtered gain map, applying the filtered gain map to the N-bit raw RGB image to generated a gain mapped N-bit RGB image, and downshifting the gain mapped N-bit RGB image by (N−K) to generate the K-bit RGB image.

Abstract translation: 将N位原始宽动态范围（WDR）拜耳图像变换为K比特原始红 - 绿 - 蓝（RGB）图像的方法，其中提供N> K，其包括将N位原始WDR拜耳图像转换为 计算来自N位原始RGB图像的亮度图像，计算亮度图像中的每个亮度像素的像素增益值以产生增益图，将增益图应用到分级噪声滤波器， 生成滤波后的增益图，将滤波后的增益图应用于N位原始RGB图像，生成增益映射的N位RGB图像，并将增益映射的N位RGB图像降低（N-K），生成K 位RGB图像。

公开(公告)号：US08890974B2

公开(公告)日：2014-11-18

申请号：US14013752

申请日：2013-08-29

Applicant: Texas Instruments Incorporated

Inventor： Buyue Zhang

IPC: H04N9/73

CPC classification number: H04N9/735

Abstract: A method for calibrating automatic white balance (AWB) in a digital system is provided that includes capturing an image of a test target under a natural lighting condition, generating a first color temperature reference from the captured image, and outputting AWB configuration data for the digital system, wherein the AWB configuration data comprises the first color temperature reference and a second color temperature reference generated using the test target under simulated lighting conditions. A method for calibrating automatic white balance (AWB) in a digital system comprising a first imaging sensor is provided that includes receiving a reference for AWB that was generated using an image captured using a second imaging sensor, and compensating a histogram reference into a histogram reference for AWB for the first imaging sensor in the digital system based on R, G, B adjustment values from the second imaging sensor to the first imaging sensor.

Abstract translation: 提供了一种用于在数字系统中校准自动白平衡（AWB）的方法，其包括在自然照明条件下捕获测试对象的图像，从捕获的图像生成第一色温参考，并输出数字的AWB配置数据 系统，其中AWB配置数据包括第一色温参考和在模拟照明条件下使用测试目标产生的第二色温参考。 提供了一种用于在包括第一成像传感器的数字系统中校准自动白平衡（AWB）的方法，其包括使用使用第二成像传感器捕获的图像生成的AWB的参考，并将直方图参考补偿为直方图参考 用于基于从第二成像传感器到第一成像传感器的R，G，B调整值的数字系统中的第一成像传感器的AWB。

公开(公告)号：US20140241620A1

公开(公告)日：2014-08-28

申请号：US14188670

申请日：2014-02-24

Applicant: Texas Instruments Incorporated

Inventor： Buyue Zhang ,  Aziz Umit Batur

IPC: G06K9/46 ,  G06K9/62

CPC classification number: G06K9/4661 ,  G06K9/4652 ,  G06T5/007 ,  G06T5/009 ,  H04N9/73 ,  H04N9/735

Abstract: A method for estimating illumination of an image captured by a digital system is provided that includes computing a feature vector for the image, identifying at least one best reference illumination class for the image from a plurality of predetermined reference illumination classes using the feature vector, an illumination classifier, and predetermined classification parameters corresponding to each reference illumination class, and computing information for further processing of the image based on the at least one best reference illumination class, wherein the information is at least one selected from a group consisting of color temperature and white balance gains.

Abstract translation: 提供了一种用于估计由数字系统拍摄的图像的照明的方法，其包括计算图像的特征向量，使用特征向量从多个预定参考照明类别中识别图像的至少一个最佳参考照明类别， 照明分类器和对应于每个参考照明类别的预定分类参数，以及用于基于所述至少一个最佳参考照明类别进一步处理所述图像的计算信息，其中所述信息是从由色温和 白平衡收益。

公开(公告)号：US20130278792A1

公开(公告)日：2013-10-24

申请号：US13865807

申请日：2013-04-18

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Buyue Zhang

IPC: H04N9/73

CPC classification number: H04N9/735

Abstract: In response to an image, a likelihood of flicker within the image is estimated. In response to the estimated likelihood, references are selected from among first and second sets of references. The first set of references are responsive to a first set of reference images captured under particular illumination. The second set of references are responsive to a second set of reference images captured under fluorescent illumination. In response to the selected references, one or more gains are generated for enhancing white balance of the image.

Abstract translation: 响应于图像，估计图像内的闪烁的可能性。 响应于估计的可能性，从第一和第二组参考文献中选择参考。 第一组参考文献响应于在特定照明下捕获的第一组参考图像。 第二组参考文献响应于在荧光照明下捕获的第二组参考图像。 响应于所选择的参考，生成一个或多个增益以增强图像的白平衡。

公开(公告)号：US09881357B2

公开(公告)日：2018-01-30

申请号：US14866112

申请日：2015-09-25

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Buyue Zhang ,  Aziz Umit Batur

IPC: G06K9/00 ,  G06T5/00 ,  H04N3/14 ,  H04N5/235 ,  H04N9/68 ,  G06T3/40 ,  G06T5/50 ,  G06T5/20 ,  G06T7/90

CPC classification number: G06T5/002 ,  G06T3/4015 ,  G06T5/009 ,  G06T5/20 ,  G06T5/50 ,  G06T7/90 ,  G06T2207/10024 ,  G06T2207/20208 ,  H04N3/155 ,  H04N5/235 ,  H04N5/2355 ,  H04N9/68

Abstract: A method of transforming an N-bit raw wide dynamic range (WDR) Bayer image to a K-bit raw red-green-blue (RGB) image wherein N>K is provided that includes converting the N-bit raw WDR Bayer image to an N-bit raw RGB image, computing a luminance image from the N-bit raw RGB image, computing a pixel gain value for each luminance pixel in the luminance image to generate a gain map, applying a hierarchical noise filter to the gain map to generate a filtered gain map, applying the filtered gain map to the N-bit raw RGB image to generated a gain mapped N-bit RGB image, and downshifting the gain mapped N-bit RGB image by (N−K) to generate the K-bit RGB image.

公开(公告)号：US20150138312A1

公开(公告)日：2015-05-21

申请号：US14546929

申请日：2014-11-18

Applicant: Texas Instruments Incorporated

Inventor： Yucheng Liu ,  Buyue Zhang ,  Aziz Umit Batur

IPC: H04N5/232 ,  G06T7/40 ,  G06K9/00 ,  G06T11/60

CPC classification number: H04N5/23238 ,  G06T3/4038 ,  H04N9/045 ,  H04N9/68

Abstract: A method, apparatus and a surround view camera system. The method includes extracting block samples from at least one of a composite view geometric LUT, input fish-eye image and view overlapping region, selecting sample inliers from the extracted block samples, estimating optimal color gain for the selected block samples, performing refined adjustment based on the estimated color gain and applying color transform, and producing a composite surround view image.

Abstract translation: 一种方法，装置和环绕立体照相机系统。 该方法包括从复合视图几何LUT，输入鱼眼图像和视图重叠区域中的至少一个提取块样本，从提取的块样本中选择样本内容，估计所选块样本的最佳色彩增益，基于精确调整 关于估计的颜色增益和应用颜色变换，并且产生复合环绕视图图像。

公开(公告)号：US20150023594A1

公开(公告)日：2015-01-22

申请号：US14309892

申请日：2014-06-20

Applicant: Texas Instruments Incorporated

Inventor： Buyue Zhang ,  Aziz Umit Batur

IPC: G06T5/00 ,  G06T5/20

CPC classification number: G06T5/002 ,  G06T3/4015 ,  G06T5/009 ,  G06T5/20 ,  G06T5/50 ,  G06T7/90 ,  G06T2207/10024 ,  G06T2207/20208 ,  H04N3/155 ,  H04N5/235 ,  H04N5/2355 ,  H04N9/68

Abstract: A method of transforming an N-bit raw wide dynamic range (WDR) Bayer image to a K-bit raw red-green-blue (RGB) image wherein N>K is provided that includes converting the N-bit raw WDR Bayer image to an N-bit raw RGB image, computing a luminance image from the N-bit raw RGB image, computing a pixel gain value for each luminance pixel in the luminance image to generate a gain map, applying a hierarchical noise filter to the gain map to generate a filtered gain map, applying the filtered gain map to the N-bit raw RGB image to generated a gain mapped N-bit RGB image, and downshifting the gain mapped N-bit RGB image by (N−K) to generate the K-bit RGB image.

Abstract translation: 将N位原始宽动态范围（WDR）拜耳图像变换为K比特原始红 - 绿 - 蓝（RGB）图像的方法，其中提供N> K，其包括将N位原始WDR拜耳图像转换为 计算来自N位原始RGB图像的亮度图像，计算亮度图像中的每个亮度像素的像素增益值以产生增益图，将增益图应用到分级噪声滤波器， 生成滤波后的增益图，将滤波后的增益图应用于N位原始RGB图像，生成增益映射的N位RGB图像，并将增益映射的N位RGB图像降低（N-K），生成K 位RGB图像。