Imaging Apparatus Angular Velocity Blur Correction
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Solution Overview
Problem
Existing follow shot imaging techniques face challenges in accurately correcting image blur due to errors in detecting the moving amount of objects on the image plane from temporally-continuous images, especially when the camera panning speed is low, leading to inaccurate relative angular velocity calculations and suboptimal blur correction.
Innovation Solution
An imaging apparatus equipped with a processor that detects motion vectors from continuous images, calculates angular velocity and acceleration, and adjusts a correction component to correct image blur by determining the angular velocity of the object relative to the camera during exposure, considering the motion of both the object and the camera.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If motion vector detection from temporally-continuous images is used to calculate relative angular velocity, then blur correction can be performed, but measurement precision deteriorates when camera panning speed is low
Solution Approach 1:
The patent introduces angular velocity sensor data as an intermediary to bridge the gap between image-based motion vector detection and actual object movement. The sensor data serves as a reference that compensates for the low accuracy of motion vector detection during slow panning, allowing the system to calculate more accurate relative angular velocity by combining both data sources.
Solution Approach 2:
The patent dynamically changes the parameters used for blur correction based on camera panning speed. When panning speed is low, the system shifts from relying primarily on motion vector detection to incorporating angular velocity sensor data with higher weight, thereby adapting the calculation parameters to maintain accuracy across different operating conditions.
2Extent of automation
If relative angular velocity is calculated from detected moving amount and sensor output, then blur correction is enabled, but calculation accuracy deteriorates due to detection errors
Solution Approach 1:
The patent implements a feedback mechanism where the angular velocity sensor continuously provides reference data that is compared with and used to correct the motion vector detection results. This feedback loop allows the system to automatically compensate for detection errors and maintain high calculation accuracy for relative angular velocity throughout the imaging process.
Solution Approach 2:
The patent combines multiple data sources (motion vectors from continuous images and angular velocity from sensors) into a composite calculation framework. By fusing these different types of data with complementary characteristics, the system achieves more accurate relative angular velocity calculation than would be possible with either source alone.
3Adaptability or versatility
If camera panning speed is extremely high or low, then follow shot imaging can be performed, but object blur occurs due to speed mismatch
Solution Approach 1:
The patent employs dynamic adjustment of the correction component movement based on real-time calculation of relative angular velocity. The system continuously adapts the correction strength and direction according to the object's motion and camera panning speed, enabling effective blur correction across a wide range of panning speeds from very slow to very fast movements.
Data Source
AI summary
An imaging apparatus includes a first calculation unit configured to calculate angular velocity of an object to the imaging apparatus, based on a detection result of a first detection unit that detects a motion vector of the object based on temporally-continuous images obtained by an image sensor and a detection result of a second detection unit that detects motion of the imaging apparatus, a second calculation unit configured to calculate angular acceleration of the object to the imaging apparatus, based on a plurality of angular velocities calculated by the first calculation unit, and a correction unit configured to move a correction component based on the angular velocity of the object to the imaging apparatus during exposure by the image sensor, and to correct image blur of the object.