Abstract: A method may include obtaining, using a head detection model and for an image of a video stream, head detection information for heads detected in the image. The head detection information may include depth distances of the heads. Method may also include obtaining bounding boxes, where obtaining the bounding boxes may include obtaining head bounding boxes for the heads detected in the image, and combining at least two of the head bounding boxes into a combined bounding box according to the depth distances. Method may furthermore include creating, individually, head frame definitions for the bounding boxes, and processing the video stream using the head frame definitions.

Abstract: A method may include obtaining, using a head detection model and for an image of a video stream, head detection information for heads detected in the image. The head detection information may include depth distances of the heads. Method may also include obtaining bounding boxes, where obtaining the bounding boxes may include obtaining head bounding boxes for the heads detected in the image, and combining at least two of the head bounding boxes into a combined bounding box according to the depth distances. Method may furthermore include creating, individually, head frame definitions for the bounding boxes, and processing the video stream using the head frame definitions.

Abstract: A multi-camera video conference call system is provided with a plurality of cameras connected together over a communication network to generate a corresponding plurality of input frame images taken from different perspectives of a video conference room, where the multi-camera video conference call system detects one or more human heads for any meeting participants captured in the input frame images, generates a head bounding box which surrounds each detected human head, extracts a body bounding box which surrounds the detected human head and at least an upper body portion of a meeting participant belonging to the detected human head, generates a participant identification feature embedding from each body bounding box, and performs person re-identification processing on all generated participant identification feature embeddings to determine a count of the meeting participants in the video conference room.

Abstract: A video conference call control system is provided with an audio mixer to receive an audio speech signal at one or more network devices connected to the video conference call; to generate first and second talker identification values from the audio speech signal; to compare the first and second talker identification values during a timing comparison window to determine if the first and second talker identification values are identical and received simultaneously or substantially contemporaneously; and to selectively mute one or more audio devices at the network device(s) if the first and second talker identification values are identical and received simultaneously or substantially contemporaneously so that microphone input signals to the audio mixer are muted to prevent “playback” echo effects and so that microphone input and audio loudspeaker output signals to the audio mixer are muted to prevent “double join” echo effects.

Abstract: A method including receiving, at a camera, light comprising a visible spectrum and an infrared spectrum (200). The method also includes detecting, using the visible spectrum, a candidate image of a head (202). The method also includes determining an estimated true size of the head (204). The method also includes determining, using the infrared spectrum, a temperature of the head (206). The method also includes filtering the candidate image of the head with respect to an operation of a video controller configured to track one or more images of heads in the visible spectrum. Filtering is based on both the estimated true size of the head and the temperature of the head (208).

Abstract: A headset charging dock includes a headset mechanical support configured to hang a first headset by a headband of the first headset; and a wireless charging interface for the first headset, the wireless charging interface integrated in the headset mechanical support.

Abstract: A method and apparatus for capturing audio including a ceiling mountable second-order differential microphone module. The module including a solid planar baffle having a generally centered aperture, at least one mounting foot to suspend the solid planar baffle approximately parallel with a rear reflecting plane and to space the solid planar baffle at a predetermined distance below the rear reflecting plane, a differential microphone sealably coupled to the planar baffle with a first side of the differential microphone acoustically exposed to an area above the planar baffle and a second side of the differential microphone acoustically exposed to an area below the planar baffle, and a mounting means for mounting the solid rear reflecting panel to the room ceiling.

Abstract: A method may include obtaining, using a head detection model and for an image in a video stream, head detection information on the video stream, identifying a group vertical size of a group on a vertical axis using the head detection information, and identifying a group horizontal size of the group on a horizontal axis using the head detection information. Method may in addition include determining an orientation of the group using the group horizontal size and group vertical size, creating a group frame definition using the orientation, and outputting the video stream using the group frame definition.

Abstract: A method may include obtaining, using a head detection model and for an image of a video stream, head detection information, where the head detection information identifies heads detected in the image, selecting a set of templates for the heads, and creating, individually, head frame definitions for the heads using the set of templates. The method may processing the video stream using the head frame definitions.

Abstract: A method may include obtaining, using a head detection model and for an image of a video stream, head detection information, where the head detection information identifies heads detected in the image. Method may also include obtaining buffer bounding boxes. Obtaining the buffer bounding boxes may include obtaining head buffer bounding boxes for the heads detected in the image, and combining at least two of the head buffer bounding boxes into a proximity buffer bounding box. The method may furthermore include identifying a set of templates based on the buffer bounding boxes. Method may in addition include creating, individually, head frame definitions for the buffer bounding boxes using the set of templates, generating an image frame definition that combines the head frame definitions, and processing the video stream using the image frame definition.

Abstract: A computer implemented method includes gathering metrics from components of a conferencing endpoint in a conference call, and determining status indicator values according to the metrics. The status indicator values each identify a component status of a component. The status indicator values are combined to estimate a user status. The computer implemented method further includes generating a description of a user status of a target user with respect to the conference call, and presenting the description of the user status.

Abstract: A method of chromatically-corrected image demosaicing for a sensor with a colour filter array (CFA) such as a Bayer filter array. The demosaicing makes use of local chromatic aberration correction data to determine chromatically-corrected pixel positions for spatial interpolation. In implementations a chromatically-corrected quadratic adjustment is also applied.

Abstract: A speakerphone system is shared with multiple participant devices of participants in a physical meeting that are using a web conferencing service. An active speaker is identified from the participants. The participant device of the active speaker is switched, such that the speakerphone system receives and renders audio of the active speaker. Video of the participant device of the active speaker is enabled, such that the web conferencing service displays the video to the participant devices.

Abstract: A method including detecting, in a digital image, a set of sub-images matching a selected object type. The method also includes generating a first confidence score that a first sub-image in set of sub-images matches a selected object type. The method also includes generating a second confidence score that a second sub-image in set of sub-images matches the selected object type. The method also includes generating a similarity measure by comparing the first sub-image to the second sub-image. The method also includes removing, responsive to the similarity measure exceeding a similarity threshold value and the first confidence score exceeding the second confidence score, the second sub-image from the set of sub-images. The method also includes processing, after removing, the digital image using the set of sub-images.

Abstract: A method (1000) for operating cameras (202) in a cascaded network (100), comprising: capturing a first view (1200) with a first lens (326) having a first focal point (328) and a first centroid (352), the first view (1200) depicting a subject (1106); capturing a second view (1202) with a second lens (326) having a second focal point (328) and a second centroid (352); detecting a first location of the subject (1106), relative the first lens (326), wherein detecting the first location of the subject (1106), relative the first lens (326), is based on audio captured by a plurality of microphones (204); estimating a second location of the subject (1106), relative the second lens (326), based on the first location of the subject (1106) relative the first lens (326); selecting a portion (1206) of the second view (1202) as depicting the subject (1106) based on the estimate of the second location of the subject (1106) relative the second lens (326).

Abstract: A headset charging dock includes a headset mechanical support configured to hang a first headset by a headband of the first headset; and a wireless charging interface for the first headset, the wireless charging interface integrated in the headset mechanical support.

Abstract: A method of tracking a presenter during a videoconference, comprising: detecting, in a data stream, data indicating a presence of one or more persons at a videoconferencing endpoint, the data stream comprising a plurality of frames; detecting tracker initiation data (e.g., that a person is actively talking, or that a person has raised their hand, or both) in the data stream; determining a subject of interest responsive to the tracker initiation data, and tracking the subject of interest as they move while making a presentation.

Abstract: An audio device for improved talker discrimination is provided. To improve suppression of close talker interference, i.e., of a person talking in close proximity to the user of the audio device, the audio device comprises at least an audio input to receive a voice input signal; a filter bank, configured to provide a plurality of sub-band signals from the voice input signal; a multi-band audio expander, arranged to receive at least a group of the sub-band signals and configured to conduct audio expansion on the group of sub-band signals to provide gain-controlled sub-band signals; and an audio output, configured to provide a voice output signal from at least the gain-controlled sub-band signals.

Abstract: Methods and apparatuses for headset control and interfaces are described. In one example, an in-line dock includes a host interface for connection to a host device to transfer digital data between the apparatus and the host device, a cable connector interface, one or more user interfaces, and a radio transceiver.

Abstract: In a multi-camera videoconferencing configuration, the locations of each camera are known. By referencing a known object visible to each camera, a 3D coordinate system is developed, with the position and angle of each camera being associated with that 3D coordinate system. The locations of the conference participants in the 3D coordinate system are determined for each camera. Sound source localization (SSL) from one camera, generally a central camera, is used to determine the speaker. The pose of the speaker is then determined. From the pose and the known locations of the cameras, the camera with the best frontal view of the speaker is determined. The 3D coordinates of the speaker are then used to direct the determined camera to frame the speaker. If the face of the speaker is not sufficiently visible, the next best camera view is determined, and the speaker framed from that camera view.