Virtual Camera Focus Mapping for Bandwidth-Limited Drone Shooting
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Solution Overview
Problem
Drones equipped with cameras face challenges in real-time recognition of the focused region during shooting, especially in environments requiring rapid movement or rotation, and continuous video data transmission is difficult due to radio band restrictions, making retakes frequent and difficult in media and sports photography.
Innovation Solution
A virtual camera is placed in a modeled virtual environment space, associated with the shooting camera, to determine a virtual focus region, and display region-specific information on a display screen, facilitating real-time focus adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If video data is continuously transmitted to the operating device, then the operator can confirm the focused region in real time, but transmission is difficult due to radio band restrictions
Solution Approach 1:
The patent creates a virtual copy of the camera system in a modeled environment. Instead of transmitting actual video data continuously, the system generates a virtual focus region map that copies and represents the essential focusing information in a compressed format, allowing real-time confirmation without continuous high-bandwidth video transmission
Solution Approach 2:
The patent extracts only the essential focus-related information from the full video data stream. By identifying and transmitting only the virtual focus region data rather than complete video frames, the system achieves real-time focus confirmation while significantly reducing radio band usage and data transmission requirements
2Measurement precision
If automatic focusing function is used, then the focused region can be determined, but the drone may be difficult to move to track the object when moving or rotating at high speed
Solution Approach 1:
The system performs preliminary calculations to predict where the focus should be directed based on the current virtual focus region and object motion trends. By pre-computing the optimal focus point before the drone needs to maneuver, the system provides advance guidance that enables smooth tracking without compromising either focus accuracy or maneuverability
Solution Approach 2:
The patent implements a feedback mechanism where the virtual focus region information is continuously updated and fed back to the operator. This real-time feedback allows the operator to see the predicted focus region and adjust drone positioning accordingly, maintaining both focus precision and operational flexibility
3Productivity
If the focal point is hard to recognize in real time, then shooting efficiency decreases, but transmitting all video data consumes excessive radio bandwidth
Solution Approach 1:
Instead of transmitting or processing all video data uniformly, the patent applies local quality enhancement only to the critical focus region. By calculating and highlighting specifically the virtual focus region where sharpness matters, the system improves shooting efficiency by making the focal point immediately recognizable while consuming minimal radio bandwidth for transmitting only this localized information
Data Source
AI summary
There is provided an information processing method to easily recognize a region focused by a shooting camera. The information processing method according to the present disclosure includes: placing a virtual camera in a virtual environment space obtained by modeling a target environment in which a mobile object equipped with a shooting camera is allowed to move, the virtual camera being associated with the shooting camera; determining a virtual focus region in the virtual environment space on the basis of an image corresponding to the field range of the virtual camera, the virtual focus region corresponding to a region focused by the shooting camera in the target environment; and displaying region-specific information on a display screen, the region-specific information specifying the virtual focus region.