Test Pattern Index Adjustment for Image Linearity Correction
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Solution Overview
Problem
Existing image display apparatuses struggle to provide a user-friendly method for visually understanding and correcting image linearity, as users find it difficult to determine how linearity is being corrected during the process.
Innovation Solution
An image display apparatus and method that includes a test pattern with indexes arranged in horizontal and vertical directions, allowing users to set a reference index and adjust intervals, enabling visual correction of image linearity by moving indexes closer or further from the reference, with options for selecting horizontal or vertical linearity correction modes and displaying the test pattern in specific regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a scanning image display apparatus is used to correct linearity, then linearity correction function is provided, but it is difficult for the user to visually figure out how the linearity of the image is actually corrected
Solution Approach 1:
A test pattern serving as an intermediary visual aid is introduced between the linearity correction process and the user. The test pattern includes multiple indexes that visually demonstrate the correction effect, allowing users to understand how linearity is being corrected without technical complexity
Solution Approach 2:
The test pattern uses visual differentiation (such as color or brightness changes) to highlight the indexes and make them distinguishable. This visual enhancement helps users clearly perceive the position and interval changes of indexes during linearity correction
2Manufacturing precision
If indexes are adjusted to correct linearity on curved surfaces, then accurate linearity correction is achieved, but the device complexity increases
Solution Approach 1:
The linearity correction process is segmented into discrete adjustable elements (indexes) that can be independently positioned. Each index represents a specific correction point, allowing the complex correction to be broken down into manageable visual adjustments
Solution Approach 2:
The test pattern with indexes is displayed in advance to establish a reference state before correction. This preliminary visual setup allows users to understand the current distortion state and track the correction process step by step
Data Source
AI summary
An image display apparatus includes an OSD processing section that displays a test pattern, which includes a plurality of index lines arranged in one of horizontal and vertical directions with respect to a pixel area of a liquid crystal light valve at regular intervals, in the pixel area, an input operation section that sets at least one of the plurality of index lines as a reference index line, and adjusts the intervals of the index lines of the test pattern so as to increase or decrease as a distance from the reference index line increases with respect to the direction of the arrangement of the index lines taking the reference index line as a reference, and an image correction section that corrects linearity of the image based on the intervals of the index lines adjusted by the input operation section.