3D Image Signal Processing Device Synchronizes Deinterlace
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Solution Overview
Problem
In field-sequential three-dimensional image display systems using horizontal parallax, the deinterlace process for left-eye and right-eye images often results in different image qualities due to varying pull-down conversion detection, leading to discomfort for viewers as the images may not be synchronized properly.
Innovation Solution
An image signal processing device and method that determines whether input signals are from video or pull-down-converted film signals, and synchronizes deinterlace processing for both eyes using interpolation for video signals or pull-down reverse conversion for film signals to ensure consistent processing types across fields.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If deinterlace processing is performed independently for left-eye and right-eye images using pull-down reverse conversion, then image quality improvement is achieved, but image quality consistency between left and right eyes deteriorates due to different pull-down detection results
Solution Approach 1:
The patent merges the deinterlace processing of left-eye and right-eye images by making the processing type (interpolation or pull-down reverse conversion) common to both eyes based on the detection result of one eye. This ensures that both images undergo the same type of processing, maintaining image quality consistency while still achieving image quality improvement.
Solution Approach 2:
The system uses the pull-down detection result from one eye's image signal to determine the processing type for both eyes' images. This self-service approach allows the detected information from one channel to serve the processing needs of both channels, ensuring consistency without requiring independent detection for each eye.
2Productivity
If different deinterlace processing types are applied to left-eye and right-eye images, then processing efficiency is improved, but viewer comfort deteriorates due to image quality differences causing stress
Solution Approach 1:
The patent combines the deinterlace processing approach for both eyes by using a unified processing type determination based on one eye's detection result. This merging ensures that both images receive consistent processing, eliminating the image quality differences that cause viewer discomfort while maintaining processing efficiency through the shared determination mechanism.
Solution Approach 2:
The system applies homogeneous processing types to both left-eye and right-eye images by making the processing type common based on detection results. This homogeneity ensures that both images are processed in the same manner, preventing the image quality inconsistencies that would otherwise cause viewer stress and discomfort.
3Manufacturing precision
If pull-down reverse conversion is used for film signals, then image quality is improved, but processing complexity increases due to the need for synchronous control between left and right eyes
Solution Approach 1:
The system uses the pull-down detection result from one eye to determine the processing type for both eyes, allowing the detection from one channel to serve both channels. This self-service approach reduces processing complexity by eliminating the need for independent detection and synchronous coordination for each eye, while still enabling the use of pull-down reverse conversion for film signals to improve image quality.
Solution Approach 2:
The patent makes the processing type determination universal by using a single detection result to control the processing type for both left-eye and right-eye images. This multi-functionality allows one detection mechanism to serve both image processing needs, reducing overall system complexity while maintaining the ability to apply appropriate processing (interpolation or pull-down reverse conversion) based on the signal type.
Data Source
AI summary
An image signal processing device improving quality of three-dimensional image is provided. The device includes a determination section; deinterlace sections and a synchronous control section. The determination section determines whether first and/or second input image signals, having horizontal parallax there between, are interlaced signals derived from video signal or from pull down-converted film signal. The deinterlace sections perform deinterlace on each of the first and second input image signals, through interpolation for a video signal or pull down reverse conversion for a film signal, and generate first and second output image signals as progressive signals, having horizontal parallax there between. The synchronous control section synchronously controls the deinterlace, based on result of the determination section, such that deinterlace process onto the first and second input image signals, synchronized with each other for each of fields, are of same type.