公开(公告)号：US09554057B2

公开(公告)日：2017-01-24

申请号：US14322898

申请日：2014-07-02

Applicant: Texas Instruments Incorporated

Inventor： Vikram VijayanBabu Appia ,  Aziz Umit Batur

IPC: H04N5/235 ,  G06T5/00 ,  G06T5/50 ,  G06T7/00

CPC classification number: H04N5/2355 ,  G06T5/007 ,  G06T5/50 ,  G06T7/521 ,  G06T2207/10028 ,  G06T2207/20208 ,  G06T2207/20212

Abstract: Wide dynamic range depth imaging in a structured light device is provided that improves depth maps for scenes with a wide range of albedo values under varying light conditions. A structured light pattern, e.g., a time-multiplexed structured light pattern, is projected into a scene at various projection times and a camera captures images of the scene for at least the same exposure times as the projection times. A depth image is computed for each of the projection/exposure times and the resulting depth images are combined to generate a composite depth image.

Abstract translation: 提供了一种结构化光装置中的宽动态范围深度成像，可改善在不同光线条件下具有广泛反照率值的场景的深度图。 诸如时间复用结构光图案的结构光图案在各种投影时间被投射到场景中，并且相机拍摄场景的图像至少与投影时间相同的曝光时间。 为每个投影/曝光时间计算深度图像，并将所得到的深度图像组合以产生复合深度图像。

公开(公告)号：US20170019655A1

公开(公告)日：2017-01-19

申请号：US15202841

申请日：2016-07-06

Applicant: Texas Instruments Incorporated

Inventor： Martin Fritz Mueller ,  Aziz Umit Batur

IPC: H04N13/02 ,  G06K9/46 ,  B60R11/04 ,  G06K9/62 ,  G06T3/20 ,  G06T7/00 ,  H04N13/00

CPC classification number: H04N13/218 ,  B60R1/00 ,  B60R2300/107 ,  G06T7/579 ,  G06T7/593 ,  G06T2207/30244 ,  H04N13/111 ,  H04N13/128 ,  H04N13/221 ,  H04N2013/0081 ,  H04N2013/0085

Abstract: Disclosed examples include three-dimensional imaging systems and methods to reconstruct a three-dimensional scene from first and second image data sets obtained from a single camera at first and second times, including computing feature point correspondences between the image data sets, computing an essential matrix that characterizes relative positions of the camera at the first and second times, computing pairs of first and second projective transforms that individually correspond to regions of interest that exclude an epipole of the captured scene, as well as computing first and second rectified image data sets in which the feature point correspondences are aligned on a spatial axis by respectively applying the corresponding first and second projective transforms to corresponding portions of the first and second image data sets, and computing disparity values of a stereo disparity map according to the rectified image data sets to construct.

Abstract translation: 公开的示例包括三维成像系统和从第一次和第二次从单个相机获得的第一和第二图像数据集重建三维场景的方法，包括计算图像数据集之间的特征点对应，计算必要矩阵 其特征在于在第一次和第二次相机的相对位置，计算对应于排除所捕获场景的表象极点的感兴趣区域的第一和第二投影变换对，以及计算第一和第二整流图像数据集 通过分别将对应的第一和第二投影变换应用于第一和第二图像数据集的相应部分，并且根据经整流的图像数据集计算立体视差图的视差值，将特征点对应的空间轴对准在空间轴上 构造。

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：US09491375B2

公开(公告)日：2016-11-08

申请号：US13632592

申请日：2012-10-01

Applicant: Texas Instruments Incorporated

Inventor： Aziz Umit Batur

IPC: H04N5/232 ,  H04N5/262

CPC classification number: H04N5/2628 ,  H04N5/23248 ,  H04N5/23274

Abstract: For reducing a delay from panning a camera system, an estimate is received of a physical movement of the camera system. In response to the estimate, a determination is made of whether the camera system is being panned. In response to determining that the camera system is not being panned, most effects of the physical movement are counteracted in a video sequence from the camera system. In response to determining that the camera system is being panned, most effects of the panning are preserved in the video sequence, while concurrently the video sequence is shifted toward a position that balances flexibility in counteracting effects of a subsequent physical movement of the camera system.

Abstract translation: 为了减少从相机系统平移的延迟，接收到相机系统的物理运动的估计。 响应于估计，确定相机系统是否被平移。 响应于确定相机系统未被平移，物理运动的大多数效果在相机系统的视频序列中被抵消。 响应于确定相机系统被平移，大多数平移的效果被保留在视频序列中，同时视频序列被转移到平衡柔性以抵消相机系统的随后的物理移动的影响的位置。

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：US20150302561A1

公开(公告)日：2015-10-22

申请号：US14691154

申请日：2015-04-20

Applicant: Texas Instruments Incorporated

Inventor： Ibrahim Ethem Pekkucuksen ,  Aziz Umit Batur

IPC: G06T5/00 ,  G06T7/00 ,  G06T3/40 ,  G06T5/50

CPC classification number: G06T5/006 ,  G06T3/4038 ,  G06T5/50 ,  G06T7/337 ,  G06T2207/20221 ,  G06T2207/30252

Abstract: 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.

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齐，通过估计鱼眼失真校正参数，对相关帧执行初始透视校正，在重叠区域中运行角点检测，定位更强的角，计算特征的简要描述符并匹配特征点 两个相机使用SUMMARY分数，执行检查和拒绝错误的特征匹配，找到透视矩阵以最小化匹配特征之间的距离; 并创建几何查找表。

公开(公告)号：US20140152686A1

公开(公告)日：2014-06-05

申请号：US14098243

申请日：2013-12-05

Applicant: Texas Instruments Incorporated

Inventor： Rajesh Narasimha ,  Aziz Umit Batur

IPC: G06T5/00

CPC classification number: G09G5/377 ,  G06T5/008 ,  G06T5/50 ,  G06T2207/10144 ,  G06T2207/20012 ,  G06T2207/20021 ,  G06T2207/20208

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20130177253A1

公开(公告)日：2013-07-11

申请号：US13734225

申请日：2013-01-04

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Aziz Umit Batur

IPC: G06K9/40

CPC classification number: G06K9/40 ,  H04N19/80 ,  H04N19/86

Abstract: A method of noise filtering of a digital video sequence is provided that includes computing a motion image for a frame, wherein the motion image includes a motion value for each pixel in the frame, and wherein the motion values are computed as differences between pixel values in a luminance component of the frame and corresponding pixel values in a luminance component of a reference frame, applying a first spatial noise filter to the motion image to obtain a final motion image, computing a blending factor image for the frame, wherein the blending factor image includes a blending factor for each pixel in the frame, and wherein the blending factors are computed based on corresponding motion values in the final motion image, generating a filtered frame, wherein the blending factors are applied to corresponding pixel values in the reference frame and the frame, and outputting the filtered frame.

Abstract translation: 提供了一种数字视频序列的噪声滤波方法，其包括计算帧的运动图像，其中运动图像包括帧中每个像素的运动值，并且其中运动值被计算为像素值之间的差值 所述帧的亮度分量和参考帧的亮度分量中的相应像素值，对所述运动图像应用第一空间噪声滤波器以获得最终运动图像，计算所述帧的混合因子图像，其中所述混合因子图像 包括对于帧中的每个像素的混合因子，并且其中基于最终运动图像中的对应的运动值计算混合因子，产生滤波的帧，其中将混合因子应用于参考帧中的相应像素值， 帧，并输出滤波帧。