LED Wall Pixel Control for Camera Fidelity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
LED background display units in video production exhibit viewing angle dependent color shift and brightness variations, leading to undesirable aesthetic effects and increased production costs due to the need for post-capture color correction.
Innovation Solution
A method and apparatus for controlling individual pixels of an electronic display screen, which involves receiving an output image from a camera, estimating the difference in perceptual aspect between pixels of the output image and correlated pixels of the input image, and adjusting parameters such as pixel luminosity to reduce these differences, thereby compensating for viewing angle effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If LED display units are used for rendering scenes in virtual production, then the ability to mix live footage with real-time computer graphics is improved, but viewing angle dependent color shift and brightness variations occur degrading image quality
Solution Approach 1:
The patent applies local quality by individually controlling each pixel's output based on its specific viewing angle characteristics. Each pixel is adjusted independently to compensate for its unique angular response, ensuring uniform color and brightness across the entire display from the camera's perspective. This pixel-level localized control resolves the contradiction by maintaining high adaptability while achieving precise image quality consistency.
Solution Approach 2:
The patent implements feedback by capturing images from the camera and using these images to determine actual viewing angle conditions. The system then adjusts pixel outputs based on this feedback information, creating a closed-loop control system that continuously optimizes color and brightness uniformity. This feedback mechanism enables the system to maintain image quality consistency while preserving the versatility of real-time rendering.
2Adaptability or versatility
If LED display units are used for rendering scenes, then virtual production capability is enhanced, but post-capture color correction costs increase
Solution Approach 1:
The patent applies preliminary action by pre-calculating and applying viewing angle compensation to each pixel before the camera captures the image. This proactive adjustment eliminates the need for expensive post-capture color correction operations. The system performs the correction in advance during the rendering process, maintaining virtual production capability while significantly reducing production costs.
Solution Approach 2:
The patent converts the harmful viewing angle dependent color shift and brightness variations into a beneficial controlled adjustment process. By measuring the actual angular response and using this information to adjust pixel outputs, the system transforms what would be a defect into a controlled feature, eliminating the need for costly post-correction while enhancing virtual production capability.
3Speed
If LED display units are used for rendering scenes, then real-time visualization is improved, but viewing angle dependent brightness variation occurs
Solution Approach 1:
The patent applies local quality by individually controlling each pixel's brightness output based on its specific viewing angle characteristics. Each pixel is adjusted independently to compensate for its unique angular response, ensuring uniform brightness across the entire display from the camera's perspective. This pixel-level localized control resolves the contradiction by maintaining real-time visualization while achieving precise brightness uniformity.
Solution Approach 2:
The patent implements parameter changes by dynamically adjusting the output parameters (brightness and color) of each pixel based on real-time camera position and viewing angle information. The system modifies pixel parameters frame-by-frame to compensate for angular variations, maintaining real-time visualization capability while achieving uniform brightness across all viewing angles.
Data Source
AI summary
A computer-generated scene is generated as background for a live action set, for display on a panel of light emitting diodes (LEDs). Characteristics of light output by the LED panel are controlled such that the computer-generated scene rendered on the LED panel, when captured by a motion picture camera, has high fidelity to the original computer-generated scene. Consequently, the scene displayed on the screen more closely simulates the rendered scene from the viewpoint of the camera. Thus, a viewpoint captured by the camera appears more realistic and/or truer to the creative intent.