Yealink explores Yealink's simplified explanations of common business communication terms regarding the application of three major communication devices, IP Phones, Video Conferencing Equipment and Headsets running on Microsoft, Zoom and other systems, in business work.
Currently, more and more conference rooms use glass walls/partitions as backgrounds. When using the Al function, it is easy to select non-participants, affecting the optimal viewing experience of remote participants. Yealink Video Fence came into being. By limiting the detection range of the camera (which can be freely adjusted according to needs), some interference factors that affect tracking accuracy, such as portraits hanging on the wall, reflections on the glass wall, etc., are removed. Within the selected range, the Al function will operate as expected.
Yealink uses trigonometric functions based on lens parameters to calculate the depth, that is, the distance between the camera and the participant, and the proportional relationship method to calculate the width of the participant from the camera, that is, the actual distance between the person and the center line of the picture.
Use a fixed-focus lens to detect all head frames, and filter according to the depth and width set by the user. People outside the detection range are framed by red frames in the picture, and people within the detection range are framed by green frames.
The depth is calculated using trigonometric functions, and the width is calculated using fitting functions.
Two fixed-focus lenses: The dual lens is composed of two fixed-focus lenses (such as SmartVision40), and the Video Fence function is implemented according to the single-lens implementation logic mentioned above.
Zoom lens + fixed-focus lens: The dual lens consists of a zoom lens and a fixed-focus lens. A high-definition zoom lens with variable magnification is used for detection, and the detection results are then mapped to the fixed-focus lens to ensure accuracy, and the fixed-focus lens implementation logic is reused to implement the Video Fence function.
The depth and width adjustment range of the video fence function changes according to the maximum visible range of the camera, and can basically cover Microsoft's medium and large conference rooms. The depth and width that different cameras can cover (i.e. the adjustable range of the Video Fence) are detailed in the table below.
The parameters take effect in real time and remain valid after restart until they are modified and saved again next time.
The Video Fence function is effective in Auto Framing / Speaker Tracking / Multi Focus mode.
The Video Fence function under Auto Framing is based on a fixed-focus lens. The Video Fence function under Speaker Tracking is based on a fixed-focus lens. The Video Fence function under Multi Focus is based on a zoom lens.
UVC86, S40, MeetingBoard series, MeetingBar AX series.
The above is all about the Video Fence function. Please contact us for more details.
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