Moving Image Playback Device Camera-Shake Correction Metadata
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Solution Overview
Problem
Existing digital camera systems consume excessive power and resources when performing camera-shake correction on moving images that have already been corrected or do not require it, as they detect and correct camera shake during both recording and playback.
Innovation Solution
A moving image playback device and method that includes a blurring correction mechanism, a judgment module to determine if correction is needed, and a playback control mechanism to only apply correction when necessary, thereby reducing unnecessary processing and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If camera-shake correction is performed on all moving image data during playback, then blurring is reduced, but power consumption increases and unnecessary processing occurs
Solution Approach 1:
The system performs camera-shake correction during the recording phase and stores the corrected image data with metadata indicating it has been corrected. During playback, the system checks this metadata to determine whether correction is needed, avoiding redundant processing and power consumption while maintaining image quality when required
Solution Approach 2:
The system uses metadata stored with the moving image data to provide feedback about whether camera-shake correction has already been applied. This feedback mechanism allows the playback device to make informed decisions about whether to perform correction, preventing unnecessary power consumption while ensuring quality when needed
2Measurement precision
If camera-shake correction is performed during both recording and playback, then image quality is maintained, but processing time and computational resources are wasted
Solution Approach 1:
The system performs camera-shake correction during recording and stores the corrected data with appropriate metadata. During playback, the system checks this metadata to determine if correction is needed, eliminating redundant processing time while maintaining image quality through the preliminary correction action
Solution Approach 2:
The system discards the need to re-perform correction on already-corrected data by utilizing stored metadata. When playback occurs, the system recovers the correction status information and uses it to avoid unnecessary processing, thereby reducing time loss while maintaining quality
3Measurement precision
If blurring correction is always applied during playback, then camera-shake is corrected, but device complexity and computational load increase
Solution Approach 1:
The system incorporates a judgment mechanism that checks metadata during playback to determine whether camera-shake correction has already been applied. This feedback-based decision system reduces processing complexity by avoiding unnecessary correction operations while maintaining correction accuracy when actually needed
Solution Approach 2:
The correction status is determined in advance through metadata checking before the actual correction processing begins. This preliminary judgment step simplifies the overall processing complexity by preventing unnecessary computational operations while ensuring accurate correction when required
Data Source
AI summary
When a blurring correction is performed when shooting a moving image, a digital camera performs blurring correction on the picked up frames and successively records the frames. Then, when generating a moving image file, the digital camera records information stating that the blurring correction has been performed in the header of the file, thereby preventing the blurring correction from being performed again when the moving image is played back. In addition, in the case that only the blurring detection is performed when shooting the moving image, the digital camera detects the blurring in the frame, correlates the detected blurring amount in the frame with the frame, and successively records the blurring amounts. Then, when generating the moving image file, the digital camera records information stating that the blurring detection has been performed in the header of the file.