Camera Display Lag Reduction via Predicted Frame Preview
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Solution Overview
Problem
Traditional videoconferencing systems experience display lag when users adjust camera framing, leading to frustrating delays in visual feedback, causing users to over- or under-correct due to lack of immediate visual feedback.
Innovation Solution
The system predicts the modified camera frame based on user input and physical camera characteristics, displaying it before receiving actual visual data, allowing immediate visual feedback and improved responsiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the system waits to receive actual visual data from the camera before displaying it, then the displayed image accuracy is improved, but the display response time deteriorates
Solution Approach 1:
The system performs preliminary actions by sending camera adjustment commands and predicting the resulting frame before actually receiving the visual data. The predicted modified camera frame is displayed immediately based on the commanded adjustment, rather than waiting for the camera to physically move and transmit the actual updated image. This preliminary display action resolves the contradiction by providing immediate visual feedback while maintaining accuracy through subsequent synchronization when the actual data arrives.
2Speed
If the system displays the predicted modified camera frame before receiving actual visual data, then the display responsiveness is improved, but the visual feedback accuracy deteriorates
Solution Approach 1:
The system implements a feedback mechanism where the predicted modified camera frame is displayed immediately to provide responsive visual feedback, and then the actual visual data is received and used to update or correct the display. This feedback loop ensures that while responsiveness is improved through immediate predicted display, accuracy is maintained through subsequent correction using actual camera data when it becomes available.
Solution Approach 2:
The system creates a copy or prediction of the modified camera frame based on the commanded adjustment parameters, rather than waiting for the actual modified frame. This predicted copy is displayed immediately to provide responsive feedback, and then the actual frame data is used to replace or correct the prediction, resolving the accuracy concern while maintaining responsiveness.
3Manufacturing precision
If the camera adjusts framing based on user input, then the camera control accuracy is improved, but the time delay for visual confirmation deteriorates
Solution Approach 1:
The system performs preliminary action by immediately displaying the predicted modified camera frame upon receiving user input, before the camera has physically adjusted and before visual confirmation data is available. This preliminary visual feedback allows users to see the intended camera framing change immediately, improving the overall control accuracy and reducing the perceived delay while the camera physically adjusts.
Data Source
AI summary
The disclosed computer-implemented method may include (i) receiving, by a camera system that includes at least one camera, input from a user instructing the camera system to adjust a framing of the camera, (ii) directing, by the camera system, the camera to adjust the framing, (iii) determining a predicted modified camera frame that approximates an actual modified camera frame predicted to result from directing the camera to adjust the framing, (iv) displaying, before completely receiving visual data that results from the actual modified camera frame from the camera, the predicted modified camera frame to the user, (v) receiving the visual data including the actual modified camera frame from the camera after the camera adjusts the camera frame, and (vi) displaying the actual modified camera frame to the user. Various other methods, systems, and computer-readable media are also disclosed.