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1. 发明授权

US10825426B2 Merging multiple exposures to generate a high dynamic range image 有权
公开(公告)号：US10825426B2
公开(公告)日：2020-11-03
申请号：US16273896
申请日：2019-02-12
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Rajesh Narasimha , Aziz Umit Batur
IPC分类号： G09G5/377 , G06T5/00 , G06T5/50 , H04N5/235 , H04N5/355
摘要： A method of generating a high dynamic range (HDR) image is provided that includes capturing a long exposure image and a short exposure image of a scene, computing a merging weight for each pixel location of the long exposure image based on a pixel value of the pixel location and a saturation threshold, and computing a pixel value for each pixel location of the HDR image as a weighted sum of corresponding pixel values in the long exposure image and the short exposure image, wherein a weight applied to a pixel value of the pixel location of the short exposure image and a weight applied to a pixel value of the pixel location in the pixel long exposure image are determined based on the merging weight computed for the pixel location and responsive to motion in a scene of the long exposure image and the short exposure image.

2. 发明授权

US09519839B2 Illumination estimation using natural scene statistics 有权
标题翻译：使用自然景观统计的照明估计
公开(公告)号：US09519839B2
公开(公告)日：2016-12-13
申请号：US14188670
申请日：2014-02-24
申请人： Texas Instruments Incorporated
发明人： Buyue Zhang , Aziz Umit Batur
IPC分类号： G06K9/00 , G06K9/46 , G06T5/00 , H04N9/73
CPC分类号： G06K9/4661 , G06K9/4652 , G06T5/007 , G06T5/009 , H04N9/73 , H04N9/735
摘要： 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.
摘要翻译：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。

3. 发明授权

US09509909B2 Method and apparatus for a surround view camera system photometric alignment 有权
标题翻译：用于环绕立体照相机系统光度校准的方法和装置
公开(公告)号：US09509909B2
公开(公告)日：2016-11-29
申请号：US14546929
申请日：2014-11-18
申请人： Texas Instruments Incorporated
发明人： Yucheng Liu , Buyue Zhang , Aziz Umit Batur
IPC分类号： H04N5/232 , G06T3/40 , H04N9/04 , H04N9/68
CPC分类号： H04N5/23238 , G06T3/4038 , H04N9/045 , H04N9/68
摘要： 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.
摘要翻译：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。

4. 发明授权

US09437171B2 Local tone mapping for high dynamic range images 有权
标题翻译：用于高动态范围图像的本地色调映射
公开(公告)号：US09437171B2
公开(公告)日：2016-09-06
申请号：US14098243
申请日：2013-12-05
申请人： Texas Instruments Incorporated
发明人： Rajesh Narasimha , Aziz Umit Batur
IPC分类号： G09G5/37 , G06T5/00 , G06T5/50 , G06T3/40 , G09G5/02 , H04N1/60 , H04N5/57 , H04N9/68 , G09G5/377
CPC分类号： G09G5/377 , G06T5/008 , G06T5/50 , G06T2207/10144 , G06T2207/20012 , G06T2207/20021 , G06T2207/20208
摘要： A method of local tone mapping of a high dynamic range (HDR) image is provided that includes dividing a luminance image of the HDR image into overlapping blocks and computing a local tone curve for each block, computing a tone mapped value for each pixel of the luminance image as a weighted sum of values computed by applying local tone curves of neighboring blocks to the pixel value, computing a gain for each pixel as a ratio of the tone mapped value to the value of the pixel, and applying the gains to corresponding pixels in the HDR image. A weight for each value is computed based on distance from the pixel to the center point of the block having the local tone curve applied to compute the value and the intensity difference between the value of the pixel and the block mean pixel value.
摘要翻译：提供了一种高动态范围（HDR）图像的本地色调映射的方法，其包括将HDR图像的亮度图像划分为重叠块并计算每个块的局部色调曲线，计算每个块的每个像素的色调映射值亮度图像作为通过将相邻块的局部色调曲线应用于像素值而计算的值的加权和，将每个像素的增益计算为色调映射值与像素的值的比率，以及将增益应用于对应像素在HDR图像中。基于应用了本地色调曲线的块的像素到中心点的距离来计算每个值的权重，以计算像素的值和块平均像素值之间的值和强度差。

5. 发明授权

US09432576B2 Method and apparatus for fusing images from an array of cameras 有权
标题翻译：用于从摄像机阵列融合图像的方法和装置
公开(公告)号：US09432576B2
公开(公告)日：2016-08-30
申请号：US14449964
申请日：2014-08-01
申请人： Texas Instruments Incorporated
发明人： Ibrahim Ethem Pekkucuksen , Aziz Umit Batur
IPC分类号： H04N5/232 , G06T3/40 , H04N3/14
CPC分类号： H04N5/23232 , G06T3/4053 , H04N3/1593 , H04N5/3415
摘要： An image fusing method, apparatus and system for fusing images from an array of cameras, method includes selecting a camera from the array of cameras as a reference camera, estimating misalignment between the retrieved input images from the reference camera and the retrieved input images from the other cameras, estimating misalignment parameters between the reference camera and the other cameras, estimating local disparity between the reference camera image data and the other cameras based on the estimated misalignment parameters, using the estimated misalignment parameters and the estimated disparity values, mapping the image data into a reference camera grid, the retrieved input image data from the other cameras in the array of cameras is fused in the reference camera grid utilizing fractional offsets from integer coordinates, and producing an output image grid on the reference camera grid and interpolate output pixels using processed data for producing a high resolution image.
摘要翻译：一种用于对来自摄像机阵列进行融合的图像的图像融合方法，装置和系统，包括从相机阵列中选择相机作为参考相机，估计来自参考相机的检索到的输入图像与来自所述参考相机的检索到的输入图像之间的对准估计参考摄像机和其他摄像机之间的不对准参数，使用估计的未对准参数和估计的视差值，基于估计的未对准参数估计参考摄像机图像数据与其他摄像机之间的局部差异，映射图像数据将相机阵列中其他摄像机的检索到的输入图像数据融合到参考摄像机网格中，利用来自整数坐标的分数偏移量，并在参考摄像机网格上产生输出图像网格，并使用用于产生高分辨率图像的处理数据。

6. 发明申请

US20150036999A1 Viewer Attention Controlled Video Playback 审中-公开
标题翻译：观众注意控制视频播放
公开(公告)号：US20150036999A1
公开(公告)日：2015-02-05
申请号：US13954928
申请日：2013-07-30
申请人： Texas Instruments Incorporated
发明人： Aziz Umit Batur , Osman Gokhan Sezer
IPC分类号： H04N5/91 , G06F3/01
CPC分类号： G06F3/013 , G11B27/34 , H04N5/93 , H04N21/4223 , H04N21/4325 , H04N21/44008 , H04N21/44218 , H04N21/458
摘要： A method of viewer attention controlled video playback on a video display device is provided that includes displaying a video on a display included in the video display device, determining whether or not attention of a viewer watching the video is focused on the display, and halting the displaying of the video when the attention of the viewer is not focused on the display.
摘要翻译：提供了一种在视频显示设备上观看者注意控制的视频播放的方法，包括在视频显示设备中包括的显示器上显示视频，确定观看视频的观看者的关注是否聚焦在显示器上，并且停止当观众的注意力不集中在显示器上时，显示视频。

7. 发明申请

US20210012755A1 MERGING MULTIPLE EXPOSURES TO GENERATE A HIGH DYNAMIC RANGE IMAGE 有权
公开(公告)号：US20210012755A1
公开(公告)日：2021-01-14
申请号：US17035250
申请日：2020-09-28
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Rajesh Narasimha , Aziz Umit Batur
IPC分类号： G09G5/377 , G06T5/00 , G06T5/50 , H04N5/235
摘要： A method of generating a high dynamic range (HDR) image is provided that includes capturing a long exposure image and a short exposure image of a scene, computing a merging weight for each pixel location of the long exposure image based on a pixel value of the pixel location and a saturation threshold, and computing a pixel value for each pixel location of the HDR image as a weighted sum of corresponding pixel values in the long exposure image and the short exposure image, wherein a weight applied to a pixel value of the pixel location of the short exposure image and a weight applied to a pixel value of the pixel location in the pixel long exposure image are determined based on the merging weight computed for the pixel location and responsive to motion in a scene of the long exposure image and the short exposure image.

8. 发明授权

US09892493B2 Method, apparatus and system for performing geometric calibration for surround view camera solution 有权
公开(公告)号：US09892493B2
公开(公告)日：2018-02-13
申请号：US14691154
申请日：2015-04-20
申请人： Texas Instruments Incorporated
发明人： Ibrahim Ethem Pekkucuksen , Aziz Umit Batur
IPC分类号： G06K9/40 , G06T5/00 , G06T5/50 , G06T3/40 , G06T7/33
CPC分类号： G06T5/006 , G06T3/4038 , G06T5/50 , G06T7/337 , G06T2207/20221 , G06T2207/30252
摘要： A method, apparatus and a system multi-camera image processing method. The method includes performing geometric alignment to produce a geometric output by estimating fish eye distortion correction parameters, performing initial perspective correction on related frame, running corner detection in the overlapping areas, locating the stronger corner, calculating BRIEF descriptors for features and match feature point from two cameras using BRIEF scores, performing checks and rejecting wrong feature matches, finding perspective matrices to minimize distance between matched features; and creating a geometric lookup table.

9. 发明授权

US09881357B2 Transforming wide dynamic range images to reduced dynamic range images 有权
公开(公告)号：US09881357B2
公开(公告)日：2018-01-30
申请号：US14866112
申请日：2015-09-25
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Buyue Zhang , Aziz Umit Batur
IPC分类号： G06K9/00 , G06T5/00 , H04N3/14 , H04N5/235 , H04N9/68 , G06T3/40 , G06T5/50 , G06T5/20 , G06T7/90
CPC分类号： G06T5/002 , G06T3/4015 , G06T5/009 , G06T5/20 , G06T5/50 , G06T7/90 , G06T2207/10024 , G06T2207/20208 , H04N3/155 , H04N5/235 , H04N5/2355 , H04N9/68
摘要： 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.

10. 发明申请

US20150138312A1 METHOD AND APPARATUS FOR A SURROUND VIEW CAMERA SYSTEM PHOTOMETRIC ALIGNMENT 有权
标题翻译：用于环视图相机系统光学对准的方法和装置
公开(公告)号：US20150138312A1
公开(公告)日：2015-05-21
申请号：US14546929
申请日：2014-11-18
申请人： Texas Instruments Incorporated
发明人： Yucheng Liu , Buyue Zhang , Aziz Umit Batur
IPC分类号： H04N5/232 , G06T7/40 , G06K9/00 , G06T11/60
CPC分类号： H04N5/23238 , G06T3/4038 , H04N9/045 , H04N9/68
摘要： 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.
摘要翻译：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。

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