3D Display Image Segmentation for Brightness and Energy Efficiency
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Solution Overview
Problem
Current 3D display systems face energy loss issues due to the need to block half of the light for each eye in methods like shutter glasses and parallax barriers, and field sequential color displays struggle to maintain high enough refresh rates to effectively display 3D images without noticeable flicker.
Innovation Solution
The method involves calculating a common image and residual images from left and right eye image data, which are then displayed in a predetermined sequence to enhance brightness and reduce energy loss, allowing for 3D perception without the need for high refresh rates, using techniques like shutter glasses, parallax barriers, and directional backlights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If shutter glasses or parallax barriers are used to block light for each eye, then 3D stereopsis is achieved, but energy loss increases due to blocking half of the light
Solution Approach 1:
The image is segmented into three components: common image (shared by both eyes), left residual image (unique to left eye), and right residual image (unique to right eye). This segmentation allows the display system to show the common image to both eyes simultaneously without blocking, while only blocking the residual images, thereby reducing overall light blocking and energy loss.
Solution Approach 2:
Instead of blocking all light for one eye at a time (excessive action), the system only blocks the residual image portions that are unique to each eye. The common image portion is displayed without blocking to both eyes, applying partial action only where necessary to create stereopsis while minimizing energy loss.
2Illumination intensity
If field sequential color displays are used to display 3D images, then color information is provided, but refresh rate decreases making flicker noticeable
Solution Approach 1:
The display uses periodic action by showing the common image at a lower refresh rate while the residual images are displayed at the full refresh rate. This periodic display of the common image (which contains most of the visual information) allows the system to maintain perceived brightness and reduce flicker while still providing color information through the field sequential color display.
3Reliability
If high refresh rates are used to display 3D images without flicker, then flicker is reduced, but power consumption increases
Solution Approach 1:
The system applies partial action by displaying the common image (which contains the majority of visual information) at a lower refresh rate, while only the residual images requiring stereoscopic separation are displayed at high refresh rates. This reduces overall power consumption while maintaining flicker-free perception.
Solution Approach 2:
Different parts of the image data are treated differently: the common image portion is displayed with lower temporal resolution, while the residual image portions are displayed with higher temporal resolution. This local quality differentiation optimizes power consumption while maintaining visual quality and reducing flicker.
Data Source
AI summary
A method for displaying images in three dimensions is provided in which input image data which includes left eye image data and right eye image data offset to provide stereopsis is used to calculate a common image and a left and right residual image. The common image includes information that is common to both the right eye image and the left eye image. The left and right residual images include information from, respectively, the left eye image and the right eye image that creates depth perception. The common, left residual and right residual images are displayed in a sequence.