Information Processing Apparatus Distance-Based Scale Correction
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Solution Overview
Problem
Interactive projectors face challenges in maintaining consistent image quality due to varying distances between the display apparatus and the input device within the projection region, leading to inconsistent image rendering.
Innovation Solution
An information processing apparatus that calculates a transformation matrix and scale correction values based on distance information to generate input images with consistent quality, using a combination of a transformation matrix calculation section, scale calculation section, and input display generation section, which also includes a content display generation section and control section for combining input and content images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If coordinate conversion is performed without distance compensation, then processing simplicity is maintained, but image quality consistency deteriorates due to varying distances within the projection region
Solution Approach 1:
The patent applies local quality by introducing distance-specific scale correction values that vary across different regions of the projection space. Instead of using a uniform conversion approach, the system calculates and applies different scale factors based on the distance from the display apparatus to specific points in the projection region, thereby maintaining consistent image quality across varying depths while preserving processing efficiency through localized corrections.
Solution Approach 2:
The patent changes the parameter of scale correction by introducing distance information as a variable factor. The system dynamically adjusts scale correction values based on the measured distance to the projection plane, transforming a static coordinate conversion process into a dynamic one that adapts to varying distances, thus ensuring consistent image quality without significantly increasing processing complexity.
2Manufacturing precision
If scale correction is applied to maintain image quality, then image quality consistency is improved, but processing complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing scale correction values for different distance ranges before actual input processing occurs. The system prepares distance information and corresponding scale factors in advance, so that during real-time operation, the coordinate conversion process can simply lookup and apply the appropriate scale correction values without performing complex calculations, thereby maintaining image quality consistency while minimizing processing complexity.
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
Ensures consistent image quality across varying distances within the projection region by adjusting the thickness, lightness, saturation, or contrast of the input image locus, preventing image quality degradation and enabling high-quality display of both input and content images.
Implementation Method 1
the sensor apparatus is an infrared stereo camera that is mounted on the display apparatus to detect the input position and the distance
Data Source
AI summary
Provided is an information processing apparatus that includes a transformation matrix calculation section, a scale calculation section, and an input display generation section. The transformation matrix calculation section calculates a transformation matrix that converts the coordinates of an input position of an input device within a projection region projected from a display apparatus from the coordinates of an image coordinate system of a sensor apparatus having detected the input position to the coordinates of a screen coordinate system of the display apparatus. The scale calculation section calculates a scale correction value for a display mode of the locus of the input position in reference to distance information regarding the distance between the display apparatus and the input position. The input display generation section generates an input image depicting the locus of the input position through the use of the transformation matrix and the scale correction value.