Anamorphic Lens Image Stabilization and Distortion Correction
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Solution Overview
Problem
Existing image stabilization methods for anamorphic lenses fail to adequately correct distortion and vignetting in image data, limiting the effectiveness of image processing and capturing.
Innovation Solution
An image processing apparatus and method that includes adding information on the compression rate and center position of an anamorphic optical system to image data, allowing for expansion processing and correction during post-processing to address distortion and vignetting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If image stabilization processing is performed on image data captured using an anamorphic lens, then image blur is reduced, but distortion and vignetting correction is insufficient
Solution Approach 1:
The patent applies preliminary action by adding compression rate and optical center position information to image data during capture, enabling subsequent post-processing to properly correct distortion and vignetting. This preliminary information embedding allows the correction processing to be accurately performed later, resolving the contradiction between stabilization and correction quality.
Solution Approach 2:
The patent utilizes parameter changes by recording specific parameters (compression rate and optical center position) of the anamorphic lens system. These parameters are then used in post-processing to adjust and correct the image data, enabling both effective stabilization and accurate distortion/vignetting correction by transforming the raw captured data using the stored parameters.
2Shape
If anamorphic lens compression is applied during image capturing, then cinematic aspect ratio is achieved, but subsequent correction processing becomes difficult
Solution Approach 1:
The patent simplifies correction processing by performing preliminary action during image capture - embedding the compression rate and optical center position information directly into the image data. This allows subsequent correction to be systematically performed using the stored parameters, reducing the complexity of post-processing while maintaining the cinematic aspect ratio.
3Reliability
If motion vectors are detected from squeezed image data for image stabilization, then electronic image stabilization is achieved, but distortion correction is not adequately addressed
Solution Approach 1:
The patent prevents information loss by applying preliminary action during image capture - embedding both compression rate and optical center position information into the image data before stabilization processing. This ensures that distortion and vignetting information is preserved and can be properly corrected later, while still achieving effective image stabilization through motion vector detection.
Data Source
AI summary
The image processing apparatus generates recording image data by image capturing through an image capturing optical system, and adds information to the recording image data. When the image capturing optical system is an anamorphic optical system, the apparatus adds, to the recording image data, information on a compression rate of the anamorphic optical system, and information indicating a center position of the anamorphic optical system in each of frame images constituting the recording image data.