Autofocus Frame Position Correction in Distorted Images
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Solution Overview
Problem
Conventional image processing methods fail to accurately display the position of autofocus frames after distortion correction, leading to shifted positions and incorrect focusing confirmation during image playback.
Innovation Solution
An image processing apparatus and method that reads and corrects image distortion, re-recording target portion information based on the distortion correction amount to ensure accurate alignment of autofocus frames and objects within the corrected image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If distortion correction is performed on a captured image, then image distortion is corrected, but the position of autofocus frame information becomes shifted relative to the corrected image
Solution Approach 1:
The patent applies preliminary action by recording the position information of autofocus frames in the image data before distortion correction is performed. This allows the system to have the original position data available for subsequent correction operations, ensuring that the autofocus frame positions can be accurately adjusted after distortion correction without being shifted relative to the corrected image.
Solution Approach 2:
The patent utilizes parameter changes by modifying the recorded position information of autofocus frames according to the distortion correction amount. The system changes the position parameters (coordinates) of the autofocus frames based on the distortion correction transformation, thereby aligning the autofocus frame positions with the corrected image and eliminating the position shift problem.
2Ease of operation
If autofocus frame position information is displayed using recorded position data, then playback functionality is enabled, but the displayed position is shifted from the actual autofocus frame position after distortion correction
Solution Approach 1:
The patent implements feedback by using the recorded position information of autofocus frames to calculate and apply appropriate position adjustments during image playback. The system feeds back the position data, compares it with the distortion correction transformation, and automatically adjusts the displayed position to match the actual autofocus frame position in the corrected image, ensuring accurate visualization.
Solution Approach 2:
The patent applies parameter changes by modifying the displayed position parameters of autofocus frames based on the distortion correction amount. During image playback, the system changes the coordinate parameters of the autofocus frame information according to the distortion correction transformation, thereby ensuring that the displayed position accurately reflects the actual position in the corrected image.
Data Source
AI summary
An image processing apparatus includes a reading unit configured to read an image and information about a target portion recorded along with the image, a correction unit configured to correct distortion occurring in the image, and a recording control unit configured to re-record the information about the target portion which has been changed according to a distortion correction amount performed on the image by the correction unit.