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公开(公告)号：US10080032B2
公开(公告)日：2018-09-18
申请号：US15601947
申请日：2017-05-22
申请人： Polycom, Inc.
发明人： Edmund Thompson
摘要： Blurriness in a video image transmitted over a lossy network can be reduced by filtering the decoder output to determine whether updating of the reference frame based on the current video data is indicated. An update may be appropriate if the decoder output is sharper than the contents of the display buffer after the last update. Additionally, an update may be appropriate if there was a significant change to the underlying image, and thus to the encoder's input. Whether such a change has occurred can be determined by analyzing the prediction mode, motion vectors, and pixel data of the output image.
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公开(公告)号：US20180091760A1
公开(公告)日：2018-03-29
申请号：US15808685
申请日：2017-11-09
申请人： Polycom, Inc.
发明人： Edmund Thompson , Yibo Liu
CPC分类号： H04N5/57 , G06K9/00255 , H04N7/152
摘要： A videoconferencing system includes at least one processor and at least one camera. The endpoint can capture one or more images with the camera. The system can locate a region of interest within an image, such as the area surrounding the face of a person participating in a videoconference. If the face area or other region of interest is too dark, the system can brighten the region to make it more visible. The system can determine whether the face is too dark by comparing the captured image to previously captured images, or comparing the luma values and other data making up the face to predetermined values, or both. The system can check the second image for over-brightening or saturation, and further adjust the image as needed. The brightening of the face area is done in such a way that the brightened region is unobtrusive to the viewer.
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公开(公告)号：US09843761B2
公开(公告)日：2017-12-12
申请号：US15017262
申请日：2016-02-05
申请人： Polycom, Inc.
发明人： Edmund Thompson , Yibo Liu
CPC分类号： H04N5/57 , G06K9/00255 , H04N7/152
摘要： A videoconferencing system includes at least one processor and at least one camera. The endpoint can capture one or more images with the camera. The system can locate a region of interest within an image, such as the area surrounding the face of a person participating in a videoconference. If the face area or other region of interest is too dark, the system can brighten the region to make it more visible. The system can determine whether the face is too dark by comparing the captured image to previously captured images, or comparing the luma values and other data making up the face to predetermined values, or both. The system can check the modified image for over-brightening or saturation, and further adjust the image as needed. The brightening of the face area is done in such a way that the brightened region is unobtrusive to the viewer.
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公开(公告)号：US09661325B1
公开(公告)日：2017-05-23
申请号：US13770178
申请日：2013-02-19
申请人： Polycom, Inc.
发明人： Edmund Thompson
摘要： Blurriness in a video image transmitted over a lossy network can be reduced by filtering the decoder output to determine whether updating of the reference frame based on the current video data is indicated. An update may be appropriate if the decoder output is sharper than the contents of the display buffer after the last update. Additionally, an update may be appropriate if there was a significant change to the underlying image, and thus to the encoder's input. Whether such a change has occurred can be determined by analyzing the prediction mode, motion vectors, and pixel data of the output image.
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公开(公告)号：US10187579B1
公开(公告)日：2019-01-22
申请号：US15640371
申请日：2017-06-30
申请人： Polycom, Inc.
发明人： Xiangdong Wang , Yibo Liu , Jinwei Feng , Edmund Thompson , Peter Chu
摘要： A videoconference apparatus and method coordinates a stationary view obtained with a stationary camera to an adjustable view obtained with an adjustable camera. The stationary camera can be a web camera, while the adjustable camera can be a pan-tilt-zoom camera. As the stationary camera obtains video, participants are detected and localized by establishing a static perimeter around a participant in which no motion is detected. Thereafter, if no motion is detected in the perimeter, any personage objects such as head, face, or shoulders which are detected in the region bounded by the perimeter are determined to correspond to the participant.
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公开(公告)号：US20170374381A1
公开(公告)日：2017-12-28
申请号：US15601947
申请日：2017-05-22
申请人： Polycom, Inc.
发明人： Edmund Thompson
摘要： Blurriness in a video image transmitted over a lossy network can be reduced by filtering the decoder output to determine whether updating of the reference frame based on the current video data is indicated. An update may be appropriate if the decoder output is sharper than the contents of the display buffer after the last update. Additionally, an update may be appropriate if there was a significant change to the underlying image, and thus to the encoder's input. Whether such a change has occurred can be determined by analyzing the prediction mode, motion vectors, and pixel data of the output image.
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公开(公告)号：US10939045B2
公开(公告)日：2021-03-02
申请号：US16740180
申请日：2020-01-10
申请人： Polycom, Inc.
发明人： Xiangdong Wang , Yibo Liu , Jinwei Feng , Edmund Thompson , Peter Chu
摘要： A videoconference apparatus and method coordinates a stationary view obtained with a stationary camera to an adjustable view obtained with an adjustable camera. The stationary camera can be a web camera, while the adjustable camera can be a pan-tilt-zoom camera. As the stationary camera obtains video, participants are detected and localized by establishing a static perimeter around a participant in which no motion is detected. Thereafter, if no motion is detected in the perimeter, any personage objects such as head, face, or shoulders which are detected in the region bounded by the perimeter are determined to correspond to the participant.
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公开(公告)号：US10574899B2
公开(公告)日：2020-02-25
申请号：US16227815
申请日：2018-12-20
申请人： Polycom, Inc.
发明人： Xiangdong Wang , Yibo Liu , Jinwei Feng , Edmund Thompson , Peter Chu
摘要： A videoconference apparatus and method coordinates a stationary view obtained with a stationary camera to an adjustable view obtained with an adjustable camera. The stationary camera can be a web camera, while the adjustable camera can be a pan-tilt-zoom camera. As the stationary camera obtains video, participants are detected and localized by establishing a static perimeter around a participant in which no motion is detected. Thereafter, if no motion is detected in the perimeter, any personage objects such as head, face, or shoulders which are detected in the region bounded by the perimeter are determined to correspond to the participant.
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9.发明申请SYSTEM AND METHOD FOR BRIGHTENING VIDEO IMAGE REGIONS TO COMPENSATE FOR BACKLIGHTING 有权用于加强视频图像区域以补偿背光的系统和方法公开(公告)号：US20160234455A1
公开(公告)日：2016-08-11
申请号：US15017262
申请日：2016-02-05
申请人： Polycom, Inc.
发明人： Edmund Thompson , Yibo Liu
CPC分类号： H04N5/57 , G06K9/00255 , H04N7/152
摘要： A videoconferencing system includes at least one processor and at least one camera. The endpoint can capture one or more images with the camera. The system can locate a region of interest within an image, such as the area surrounding the face of a person participating in a videoconference. If the face area or other region of interest is too dark, the system can brighten the region to make it more visible. The system can determine whether the face is too dark by comparing the captured image to previously captured images, or comparing the luma values and other data making up the face to predetermined values, or both. The system can check the modified image for over-brightening or saturation, and further adjust the image as needed. The brightening of the face area is done in such a way that the brightened region is unobtrusive to the viewer.
摘要翻译： 视频会议系统包括至少一个处理器和至少一个相机。 端点可以使用相机捕获一个或多个图像。 系统可以在图像内定位感兴趣的区域，例如参与视频会议的人的面部周围的区域。 如果脸部区域或其他感兴趣区域太暗，系统可以使该区域变亮以使其更可见。 通过将捕获的图像与先前捕获的图像进行比较，或将亮度值和构成面部的其他数据比较为预定值，或者两者，系统可以确定脸部是否太暗。 系统可以检查修改后的图像是否过亮或饱和，并根据需要进一步调整图像。 面部区域的增白以这样的方式完成，使得增亮区域对观察者不引人注意。
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公开(公告)号：US20190174068A1
公开(公告)日：2019-06-06
申请号：US16227815
申请日：2018-12-20
申请人： Polycom, Inc.
发明人： Xiangdong Wang , Yibo Liu , Jinwei Feng , Edmund Thompson , Peter Chu
CPC分类号： H04N5/23296 , G06K9/00234 , G06K9/00255 , G06K9/00369 , G06T7/20 , G06T2207/10016 , G06T2207/30201 , H04N5/2258 , H04N5/23219 , H04N5/23254 , H04N5/23299 , H04N5/247 , H04N7/147 , H04N7/15 , H04N7/152
摘要： A videoconference apparatus and method coordinates a stationary view obtained with a stationary camera to an adjustable view obtained with an adjustable camera. The stationary camera can be a web camera, while the adjustable camera can be a pan-tilt-zoom camera. As the stationary camera obtains video, participants are detected and localized by establishing a static perimeter around a participant in which no motion is detected. Thereafter, if no motion is detected in the perimeter, any personage objects such as head, face, or shoulders which are detected in the region bounded by the perimeter are determined to correspond to the participant.
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