Imaging Apparatus Coordinate Transformation for Positional Deviation Correction
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Solution Overview
Problem
Conventional imaging techniques that combine multiple short-exposure images to suppress image blur often result in regions with insufficient exposure due to positional deviations, leading to a smaller output image with reduced quality.
Innovation Solution
An imaging apparatus that includes a detection unit to identify positional differences between images, a drive unit to correct image blur, and a coordinate transformation unit to align images before combining them, ensuring optimal exposure and reducing image deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple short-exposure images are combined to suppress image blur, then image blur is reduced, but positional deviation between images causes insufficient exposure regions and reduces output image quality
Solution Approach 1:
The patent applies preliminary action by performing positioning correction through coordinate transformation before the image combining process. The position difference between images is calculated and corrected in advance, ensuring that images are properly aligned before combination, thereby preventing insufficient exposure regions and maintaining high output image quality while achieving effective blur suppression
2Manufacturing precision
If only overlapping regions with sufficient exposure are used for combining images, then image quality is maintained, but the output image size is reduced
Solution Approach 1:
By performing positioning correction before image combining, the patent enables the use of the entire image area rather than just overlapping regions. The coordinate transformation aligns images in advance, allowing all captured pixels to contribute to the final image, thus maintaining both high image quality and full output image size
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus effectively suppresses positional deviations and improves image quality by combining images with corrected blur, resulting in fewer insufficiently exposed regions and a higher-quality output.
Implementation Method 1
a drive unit configured to drive a shake correction unit that optically corrects image blur of the image based on the difference in position detected by the detection unit
Data Source
AI summary
An imaging apparatus that performs positioning of a plurality of images that has been continuously captured by an image sensor includes at least one memory, and at least one processor coupled to the at least one memory. The at least one processor functions as a detection unit configured to detect a difference in position between the images captured by the image sensor, a drive unit configured to drive a shake correction unit that optically corrects image blur of each image based on the difference in position detected by the detection unit, and a coordinate transformation unit configured to perform positioning of the images in which the image blur has been corrected by the shake correction unit, based on the difference in position detected by the detection unit.