Pixel-Intensity Modulation for Frame-Sequential 3D Displays
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Solution Overview
Problem
Frame-sequential stereoscopic 3D displays suffer from residual images due to insufficient response time, leading to ghost images, which existing solutions like black frame insertion and shuttering mechanisms either fail to address effectively or result in reduced brightness and resolution.
Innovation Solution
Implementing pixel-intensity modulation techniques to identify and process static and dynamic modulating pixels, using multiple frames for smooth transitions between left- and right-perspective images, and redistributing temporal energy to minimize residual images while maintaining brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If black frame insertion is used to increase response time, then the measured response time is improved, but residual images from frame-sequential stereoscopic display are not reduced
Solution Approach 1:
The patent applies local quality by differentiating between static modulators (pixels that modulate due to frame-sequential stereoscopic display) and dynamic modulators (pixels that modulate due to motion). Different processing techniques are applied to each type: static modulators receive pixel-intensity modulation to reduce residual images, while dynamic modulators are processed differently to maintain motion accuracy. This localized differentiation resolves the contradiction by addressing residual images specifically without compromising overall response time performance.
Solution Approach 2:
The patent changes the parameter of pixel intensity dynamically based on the type of modulator. For static modulators, the intensity is adjusted through pixel-intensity modulation to reduce residual images. For dynamic modulators, the intensity processing is modified to preserve motion information. This parameter change approach allows the system to reduce residual images while maintaining response time performance.
2Object-generated harmful factors
If shuttering mechanism is adjusted to mask residual images, then residual image appearance is reduced, but perceived brightness is reduced
Solution Approach 1:
The patent applies local quality by treating static and dynamic modulators differently. Static modulators undergo pixel-intensity modulation to reduce residual images, while dynamic modulators are processed to maintain brightness and motion accuracy. This localized approach reduces residual images without the need to mask all pixels, thereby preserving overall perceived brightness.
Solution Approach 2:
The patent creates a processed version of the image data that separates static and dynamic modulators. By copying and differentiating the processing paths for these two types of pixels, the system can reduce residual images in static regions while maintaining brightness in dynamic regions, avoiding the need for global brightness reduction.
3Object-generated harmful factors
If other 3D technologies are used to reduce residual images, then residual image appearance is improved, but perceived resolution is lowered
Solution Approach 1:
The patent applies local quality by processing different pixel types differently within the same frame-sequential stereoscopic display. Static modulators receive pixel-intensity modulation to reduce residual images, while dynamic modulators are processed to maintain resolution. This localized processing allows the system to reduce residual images while preserving the perceived resolution of the 3D display.
Solution Approach 2:
The patent introduces dynamic processing that adapts to the content being displayed. By dynamically identifying whether a pixel is a static or dynamic modulator and applying appropriate processing techniques, the system can reduce residual images without compromising resolution. The dynamic nature of the processing allows the system to maintain high resolution while reducing residual images.
Data Source
AI summary
Discloses herein are methods, apparatuses, and systems for preparing and displaying images in frame-sequential stereoscopic 3D. Frame-sequential stereoscopic display includes an alternating sequence of left- and right-perspective images for display. Disclosed methods include identifying pixels that modulate due to the alternating sequence of left- and right-perspective images of the frame-sequential stereoscopic display. The disclosed methods also include processing the pixels to reduce one or more residual images caused by the alternating sequence of left- and right-perspective images of the frame-sequential stereoscopic display. The disclosed methods may be implemented by a processing unit and the processing unit may be included in a system (such as, a computer or video-game console).