3D Object Size Distortion Compensation in Broadcast Receivers
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Solution Overview
Problem
Existing 3D image display technologies suffer from size distortion phenomena due to the perspective effect, where 3D objects appear differently sized based on their perceived distance, leading to an inconvenient viewing experience.
Innovation Solution
A broadcast receiver processes 3D object data by calculating a distortion compensation factor using disparity values and parallax information to adjust the size of 3D objects, ensuring a consistent and accurate 3D effect across different distances, thereby compensating for size distortions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If 3D image display uses perspective effect to create depth perception, then stereoscopic effect is improved, but size distortion of objects occurs
Solution Approach 1:
The patent applies parameter changes by modifying the display parameters of 3D objects based on their depth information. Specifically, it adjusts size parameters, brightness parameters, and focus parameters according to the distance of objects from the viewer, thereby compensating for perspective distortion while maintaining the stereoscopic effect. This is achieved through receiving depth information of 3D objects and dynamically adjusting display parameters to achieve natural size perception.
2Reliability
If disparity values are increased to enhance 3D depth perception, then stereoscopic effect is improved, but size distortion and viewing discomfort increase
Solution Approach 1:
The patent optimizes viewing comfort by dynamically adjusting multiple display parameters including size, brightness, and focus based on depth information. It receives disparity values and depth information, then calculates appropriate adjustment parameters to compensate for distortion while maintaining comfortable viewing. The system adjusts brightness parameters specifically to reduce viewing fatigue caused by high disparity values, thereby improving ease of operation without sacrificing 3D depth perception quality.
3Manufacturing precision
If automatic size adjustment based on depth information is implemented, then size distortion is reduced, but device complexity increases
Solution Approach 1:
The patent implements self-service by enabling the display system to automatically adjust its parameters based on received depth information without requiring manual intervention. The system receives depth information and disparity values, automatically calculates the necessary size, brightness, and focus adjustments, and applies these corrections in real-time. This automated process reduces size distortion while managing processing complexity through efficient algorithms that leverage the already-available depth data from the 3D content.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution provides a more convenient and efficient 3D viewing environment by accurately adjusting the size of 3D objects, eliminating size distortion and enhancing the overall 3D display experience.
Implementation Method 1
Since human depth perception is based upon binocular parallax caused by a distance between the eyes of about 65 mm, the 3D image enables both right and left eyes to respectively view associated plane images
Data Source
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AI summary
Disclosed are a method for displaying 3D images and a broadcast receiver. The method for displaying 3D images according to one embodiment of the present invention comprises the steps of: receiving broadcasting signals including video data and 3D object data; decoding the 3D object data, the 3D object data including texts or image information for a 3D object, output position information of the 3D object, and disparity information of the 3D object; obtaining parallax values from the disparity information and producing distortion compensation coefficients using the parallax values; adjusting a display size of the 3D object using the distortion compensation coefficients; and outputting and displaying the 3D object.