公开(公告)号：US09536186B2

公开(公告)日：2017-01-03

申请号：US14536402

申请日：2014-11-07

Applicant: QUALCOMM Incorporated

Inventor： James Wilson Nash ,  Kalin Mitkov Atanassov ,  Stephen Michael Verrall

IPC: G06K19/06 ,  G06K9/20 ,  G02B27/42 ,  G02B5/18 ,  G06T15/50

CPC classification number: G06K19/06037 ,  G02B5/1857 ,  G02B27/4205 ,  G02B27/4266 ,  G06K9/2036 ,  G06T15/506

Abstract: A method includes identifying one or more codewords of a bit sequence that fail to satisfy at least one codeword constraint. The method also includes removing the one or more codewords from the bit sequence to generate a punctured bit sequence. The method includes, in response to determining that the punctured bit sequence is symmetric, generating a hermitian symmetric codebook primitive based at least in part on the punctured bit sequence, where the hermitian symmetric codebook primitive is useable to form a diffractive optical element (DOE) of a structured light depth sensing system.

Abstract translation: 一种方法包括识别不满足至少一个码字约束的比特序列的一个或多个码字。 该方法还包括从比特序列中移除一个或多个码字以产生一个穿孔比特序列。 该方法包括响应于确定穿孔比特序列是对称的，至少部分地基于穿孔比特序列生成隐形对称码本原语，其中，密码对称码本原语可用于形成衍射光学元件（DOE） 的结构光深度感测系统。

公开(公告)号：US20160012567A1

公开(公告)日：2016-01-14

申请号：US14631681

申请日：2015-02-25

Applicant: QUALCOMM Incorporated

Inventor： Hasib Ahmed Siddiqui ,  Kalin Mitkov Atanassov ,  Stephen Michael Verrall

IPC: G06T3/40 ,  H04N13/02 ,  G06T7/00

CPC classification number: G06T3/4053 ,  G06T3/4007 ,  G06T7/337 ,  G06T7/593 ,  G06T2207/10012 ,  G06T2207/10021 ,  G06T2207/20016 ,  H04N13/239 ,  H04N13/271

Abstract: Aspects relate to a method of generating a high-resolution image containing depth information of an object. In one aspect, the method includes downsampling a first reference image and a second reference image from a first resolution to a second resolution, wherein the first resolution is higher than the second resolution, and wherein the first reference image and the second reference image comprising a stereo image pair. The method further includes generating a depth map at the second resolution based on global minimization techniques, using the downsampled stereo image pair. The method also includes upsampling the depth map from the second resolution to the first resolution and using a guided filter to align contours of the upsampled depth map to contours of the first reference image.

Abstract translation: 方面涉及生成包含对象的深度信息的高分辨率图像的方法。 一方面，该方法包括从第一分辨率向第二分辨率对第一参考图像和第二参考图像进行下采样，其中所述第一分辨率高于所述第二分辨率，并且其中所述第一参考图像和所述第二参考图像包括 立体图像对。 该方法还包括使用下采样的立体图像对在基于全局最小化技术的第二分辨率下生成深度图。 该方法还包括将深度图从第二分辨率上升到第一分辨率，并使用引导过滤器将上采样的深度图的轮廓对准第一参考图像的轮廓。

公开(公告)号：US20150371387A1

公开(公告)日：2015-12-24

申请号：US14309458

申请日：2014-06-19

Applicant: QUALCOMM Incorporated

Inventor： Kalin Mitkov Atanassov ,  James Wilson Nash ,  Stephen Michael Verrall ,  Hasib Ahmed Siddiqui

IPC: G06T7/00 ,  H04N13/02 ,  H04N5/232 ,  G06T7/40 ,  G06T19/20

CPC classification number: G06T7/33 ,  G06T5/008 ,  G06T5/40 ,  G06T7/593 ,  G06T19/20 ,  G06T2207/10012 ,  G06T2207/10024 ,  G06T2207/10048 ,  G06T2207/20021 ,  H04N5/23229 ,  H04N13/239 ,  H04N13/257

Abstract: Certain aspects relate to systems and techniques for performing local intensity equalization on images in a set of images exhibiting local intensity variations. For example, the local intensity equalization can be used to perform accurate region matching and alignment of the images. The images can be partitioned into regions of pixel blocks, for instance based on location, shape, and size of identified keypoints in the images. Regions depicting the same feature in the images can be equalized with respect to intensity. Region matching based on the keypoints in the intensity-equalized regions can be performed with accuracy even in images captured by asymmetric sensors or exhibiting spatially varying intensity.

Abstract translation: 某些方面涉及用于在呈现局部强度变化的一组图像中的图像上执行局部强度均衡的系统和技术。 例如，可以使用局部强度均衡来执行图像的精确区域匹配和对准。 图像可以被划分为像素块的区域，例如基于图像中所确定的关键点的位置，形状和大小。 在图像中描绘相同特征的区域可以相对于强度相等。 即使在由不对称传感器拍摄的图像或显示出空间变化的强度的图像中，也可以精确地执行基于强度均衡区域中的关键点的区域匹配。