Camera Shutter Pre-Triggering With 3A Lock and Buffered Frames
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Solution Overview
Problem
The existing shooting response time in electronic devices is slow due to multiple interactions between the camera application and the hardware abstraction layer, leading to a prolonged time from shutter triggering to photo capture, which affects the user experience.
Innovation Solution
The electronic device sends an instruction to initiate the shooting process in advance when the user taps the shutter control, determining if the 3A state is locked, and if so, obtains an image frame without further interaction, utilizing a custom interface and buffered frames for post-processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the camera application interacts with the hardware abstraction layer multiple times to ensure proper shooting sequence and state verification, then the shooting reliability is improved, but the shooting response time increases
Solution Approach 1:
The system performs preliminary actions by checking the 3A lock state before the actual shooting trigger is activated. When the 3A algorithm converges, the system pre-loads the image frame into a buffer and sets the 3A lock state in advance. This allows the shooting process to be executed immediately when triggered, without requiring multiple interactions to verify convergence state, thus reducing response time while maintaining reliability
Solution Approach 2:
The patent introduces an intermediary mechanism (the 3A lock state indicator and buffer frame) between the 3A algorithm convergence and the shooting execution. This intermediary allows the system to decouple the state verification from the shooting trigger, enabling the camera application to quickly check the lock state without requiring multiple round-trip interactions with the hardware abstraction layer, thereby reducing response time while ensuring proper state verification
2Manufacturing precision
If the system waits for 3A algorithm convergence confirmation before initiating shooting, then the image quality is improved, but the shooting speed decreases
Solution Approach 1:
The system performs the 3A algorithm convergence check and image frame buffering in advance, before the user actually triggers the shot. When the 3A algorithm converges, the system pre-processes and buffers the image frame, and sets the 3A lock state. This preliminary action ensures that when the shooting is triggered, the high-quality image is already ready for immediate capture and processing, thus maintaining image quality while improving shooting speed
Data Source
AI summary
A shooting method and a related device. According to the shooting method, a camera application in an electronic device may send an instruction of shooting in advance through a custom interface when a user taps a shutter control. The electronic device may determine a current 3A state based on the instruction of shooting. If the current 3A state is a 3A lock state, the electronic device obtains an image frame. In the foregoing process, the electronic device may further capture a variable exposure frame in advance, and obtain an image in a buffered frame queue based on address information and a reference count of the image. The electronic device may not only increase a shooting response speed of the electronic device, but also select a clearer image for fusion more accurately. This increases definition of a shot image and improves shooting experience of the user.