公开(公告)号：US11528499B2

公开(公告)日：2022-12-13

申请号：US17188784

申请日：2021-03-01

申请人： Microsoft Technology Licensing, LLC

发明人： Xiaoyan Sun ,  Zhiwei Xiong ,  Feng Wu

IPC分类号： H04N19/51 ,  H04N19/80 ,  H04N19/176 ,  H04N19/117 ,  H04N19/14 ,  H04N19/86

摘要： Disclosed herein are exemplary embodiments of methods, apparatus, and systems for performing content-adaptive deblocking to improve the visual quality of video images compressed using block-based motion-predictive video coding. For instance, in certain embodiments of the disclosed technology, edge information is obtained using global orientation energy edge detection (“OEED”) techniques on an initially deblocked image. OEED detection can provide a robust partition of local directional features (“LDFs”). For a local directional feature detected in the partition, a directional deblocking filter having an orientation corresponding to the orientation of the LDF can be used. The selected filter can have a filter orientation and activation thresholds that better preserve image details while reducing blocking artifacts. In certain embodiments, for a consecutive non-LDF region, extra smoothing can be imposed to suppress the visually severe blocking artifacts.

公开(公告)号：US20190261014A1

公开(公告)日：2019-08-22

申请号：US16404534

申请日：2019-05-06

申请人： Microsoft Technology Licensing, LLC

发明人： Xiaoyan Sun ,  Zhiwei Xiong ,  Feng Wu

IPC分类号： H04N19/51 ,  H04N19/86 ,  H04N19/14 ,  H04N19/80 ,  H04N19/176 ,  H04N19/117

摘要： Disclosed herein are exemplary embodiments of methods, apparatus, and systems for performing content-adaptive deblocking to improve the visual quality of video images compressed using block-based motion-predictive video coding. For instance, in certain embodiments of the disclosed technology, edge information is obtained using global orientation energy edge detection (“OEED”) techniques on an initially deblocked image. OEED detection can provide a robust partition of local directional features (“LDFs”). For a local directional feature detected in the partition, a directional deblocking filter having an orientation corresponding to the orientation of the LDF can be used. The selected filter can have a filter orientation and activation thresholds that better preserve image details while reducing blocking artifacts. In certain embodiments, for a consecutive non-LDF region, extra smoothing can be imposed to suppress the visually severe blocking artifacts.

公开(公告)号：US20230062231A1

公开(公告)日：2023-03-02

申请号：US17983287

申请日：2022-11-08

申请人： Microsoft Technology Licensing, LLC

发明人： Xiaoyan Sun ,  Zhiwei Xiong ,  Feng Wu

IPC分类号： H04N19/51 ,  H04N19/80 ,  H04N19/176 ,  H04N19/117 ,  H04N19/14 ,  H04N19/86

摘要： Disclosed herein are exemplary embodiments of methods, apparatus, and systems for performing content-adaptive deblocking to improve the visual quality of video images compressed using block-based motion-predictive video coding. For instance, in certain embodiments of the disclosed technology, edge information is obtained using global orientation energy edge detection (“OEED”) techniques on an initially deblocked image. OEED detection can provide a robust partition of local directional features (“LDFs”). For a local directional feature detected in the partition, a directional deblocking filter having an orientation corresponding to the orientation of the LDF can be used. The selected filter can have a filter orientation and activation thresholds that better preserve image details while reducing blocking artifacts. In certain embodiments, for a consecutive non-LDF region, extra smoothing can be imposed to suppress the visually severe blocking artifacts.

公开(公告)号：US20230059434A1

公开(公告)日：2023-02-23

申请号：US17983263

申请日：2022-11-08

申请人： Microsoft Technology Licensing, LLC

发明人： Xiaoyan Sun ,  Zhiwei Xiong ,  Feng Wu

IPC分类号： H04N19/51 ,  H04N19/80 ,  H04N19/176 ,  H04N19/117 ,  H04N19/14 ,  H04N19/86

摘要： Disclosed herein are exemplary embodiments of methods, apparatus, and systems for performing content-adaptive deblocking to improve the visual quality of video images compressed using block-based motion-predictive video coding. For instance, in certain embodiments of the disclosed technology, edge information is obtained using global orientation energy edge detection (“OEED”) techniques on an initially deblocked image. OEED detection can provide a robust partition of local directional features (“LDFs”). For a local directional feature detected in the partition, a directional deblocking filter having an orientation corresponding to the orientation of the LDF can be used. The selected filter can have a filter orientation and activation thresholds that better preserve image details while reducing blocking artifacts. In certain embodiments, for a consecutive non-LDF region, extra smoothing can be imposed to suppress the visually severe blocking artifacts.

公开(公告)号：US20210185339A1

公开(公告)日：2021-06-17

申请号：US17188784

申请日：2021-03-01

申请人： Microsoft Technology Licensing, LLC

发明人： Xiaoyan Sun ,  Zhiwei Xiong ,  Feng Wu

IPC分类号： H04N19/51 ,  H04N19/80 ,  H04N19/176 ,  H04N19/117 ,  H04N19/14 ,  H04N19/86

摘要： Disclosed herein are exemplary embodiments of methods, apparatus, and systems for performing content-adaptive deblocking to improve the visual quality of video images compressed using block-based motion-predictive video coding. For instance, in certain embodiments of the disclosed technology, edge information is obtained using global orientation energy edge detection (“OEED”) techniques on an initially deblocked image. OEED detection can provide a robust partition of local directional features (“LDFs”). For a local directional feature detected in the partition, a directional deblocking filter having an orientation corresponding to the orientation of the LDF can be used. The selected filter can have a filter orientation and activation thresholds that better preserve image details while reducing blocking artifacts. In certain embodiments, for a consecutive non-LDF region, extra smoothing can be imposed to suppress the visually severe blocking artifacts.

公开(公告)号：US10965950B2

公开(公告)日：2021-03-30

申请号：US16404534

申请日：2019-05-06

申请人： Microsoft Technology Licensing, LLC

发明人： Xiaoyan Sun ,  Zhiwei Xiong ,  Feng Wu

IPC分类号： H04N19/51 ,  H04N19/80 ,  H04N19/176 ,  H04N19/117 ,  H04N19/14 ,  H04N19/86

摘要： Disclosed herein are exemplary embodiments of methods, apparatus, and systems for performing content-adaptive deblocking to improve the visual quality of video images compressed using block-based motion-predictive video coding. For instance, in certain embodiments of the disclosed technology, edge information is obtained using global orientation energy edge detection (“OEED”) techniques on an initially deblocked image. OEED detection can provide a robust partition of local directional features (“LDFs”). For a local directional feature detected in the partition, a directional deblocking filter having an orientation corresponding to the orientation of the LDF can be used. The selected filter can have a filter orientation and activation thresholds that better preserve image details while reducing blocking artifacts. In certain embodiments, for a consecutive non-LDF region, extra smoothing can be imposed to suppress the visually severe blocking artifacts.

公开(公告)号：US09523571B2

公开(公告)日：2016-12-20

申请号：US14529883

申请日：2014-10-31

申请人： MICROSOFT TECHNOLOGY LICENSING, LLC

发明人： Zhiwei Xiong ,  Feng Wu ,  Yueyi Zhang ,  Pengyu Cong

IPC分类号： G01B11/25 ,  H04N13/02

CPC分类号： G01B11/2513 ,  H04N13/271

摘要： An adaptive depth sensing system (ADSS) illuminates a scene with a pattern that is constructed based on an analysis of at least one prior-generated depth map. In one implementation, the pattern is a composite pattern that includes two or more component patterns associated with different depth regions in the depth map. The composite pattern may also include different illumination intensities associated with the different depth regions. By using this composite pattern, the ADSS can illuminate different objects in a scene with different component patterns and different illumination intensities, where those objects are located at different depths in the scene. This process, in turn, can reduce the occurrence of defocus blur, underexposure, and overexposure in the image information.

摘要翻译： 自适应深度感测系统（ADSS）利用基于至少一个先前生成的深度图的分析构建的图案来照亮场景。 在一个实现中，该图案是包括与深度图中的不同深度区域相关联的两个或多个分量图案的复合图案。 复合图案还可以包括与不同深度区域相关联的不同照明强度。 通过使用这种复合图案，ADSS可以照亮具有不同组件图案和不同照明强度的场景中的不同对象，其中这些对象位于场景中的不同深度。 这个过程又可以减少图像信息中散焦模糊，曝光不足和过度曝光的发生。