Dual-Camera Image Blur Correction Using Secondary Motion Capture
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Solution Overview
Problem
Handheld devices such as cameras, cell phones, and PDAs face image blur issues due to device movement during image capture, and existing solutions like accelerometers increase device cost and bulk without effectively addressing non-linear motion.
Innovation Solution
A dual-camera system where a secondary camera with lower resolution captures a series of images at high speed to determine device motion, which is then used to correct image blur in the primary camera's images, allowing for efficient blur correction without adding bulk or cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an accelerometer is used to measure device movement for image blur correction, then image blur correction capability is improved, but device cost and bulk increase
Solution Approach 1:
The patent uses a secondary camera to capture images that copy the motion information needed for blur correction. Instead of using an accelerometer to directly measure device movement, the system captures visual copies of the scene at different time points and derives motion information from these image sequences, thereby avoiding the need for additional sensing hardware.
Solution Approach 2:
The patent introduces a secondary camera as an intermediary device to indirectly measure device motion. Rather than directly sensing acceleration with an accelerometer, the system uses the secondary camera to capture intermediate image frames that encode motion information, which is then processed to generate correction data for the primary camera.
2Reliability
If an accelerometer is used to measure device movement for image blur correction, then image blur correction capability is improved, but device cost increases
Solution Approach 1:
The patent uses a secondary camera to capture images that copy the motion information needed for blur correction. Instead of using an accelerometer to directly measure device movement, the system captures visual copies of the scene at different time points and derives motion information from these image sequences, thereby avoiding the need for additional sensing hardware.
Solution Approach 2:
The patent makes the secondary camera serve multiple functions: it is used for both capturing secondary images for motion analysis and potentially for other imaging tasks. This multi-functionality justifies the inclusion of the secondary camera without requiring separate dedicated sensors, thereby controlling device cost while achieving blur correction capability.
3Reliability
If a secondary camera is used to capture images for motion determination, then image blur correction is achieved without additional sensors, but device complexity increases
Solution Approach 1:
The patent makes the secondary camera serve multiple functions: it is used for both capturing secondary images for motion analysis and potentially for other imaging tasks. This multi-functionality justifies the inclusion of the secondary camera without requiring separate dedicated sensors, thereby controlling device cost while achieving blur correction capability.
Solution Approach 2:
The patent merges the motion sensing function with the existing secondary camera system. Instead of adding a separate motion sensing subsystem, the system combines the imaging and motion measurement functions into a single integrated approach where the secondary camera serves dual purposes, reducing overall system complexity.
Data Source
AI summary
A device that employs a secondary camera for use in image blur correction. The device includes a first camera that acquires a digital image and a second camera that acquires a series of digital images that enable a determination of a motion of the device during acquisition of the digital image. The determined motion may be used to correct an image blur in the digital image acquired with the primary camera.