In-train Display Color Verification via Camera Analysis
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Solution Overview
Problem
Existing in-train advertisement display systems inaccurately determine display failures, as they only check for the presence of a commercial's identification information, ignoring color unevenness or other display issues outside the detection area.
Innovation Solution
An in-train information display apparatus equipped with a camera to photograph the video screen and a display-result determining unit that calculates color-related information to assess whether the advertisement content is displayed normally, using reference information for accurate determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If only the presence of CM ID is detected to determine commercial broadcasting, then the detection process is simple, but the measurement precision of display result is insufficient
Solution Approach 1:
The patent replaces the simple CM ID text detection method with a camera-based image capture and color information analysis system. Instead of relying solely on identifying text elements (CM ID), the system captures the actual displayed image and analyzes color-related information to determine whether the commercial was properly displayed, substituting a more sophisticated optical detection approach for the previous mechanical/text-based method.
Solution Approach 2:
The patent changes the detection parameter from simple presence/absence of CM ID to color-related information analysis. By comparing color characteristics of the displayed commercial with expected color values, the system achieves more precise determination of display results, moving beyond binary detection to a multi-parameter color analysis approach.
2Reliability
If CM ID detection is used to calculate broadcasting times, then the process is efficient, but the reliability of broadcasting achievement data is low
Solution Approach 1:
The patent replaces the CM ID text recognition system with a camera-based visual verification system. The camera captures the actual displayed commercial and analyzes its color properties, providing more reliable evidence of proper display compared to simple text detection. This substitution ensures that commercials with display defects (such as color unevenness) are properly identified.
Solution Approach 2:
The system implements feedback by comparing the captured color information of the displayed commercial against expected color values. This feedback mechanism allows the system to verify whether the commercial was displayed correctly and to identify display failures, providing reliable achievement data for billing and quality control purposes.
Data Source
AI summary
The present invention is an in-train information display apparatus that displays advertisement content to a passenger. The in-train information display apparatus includes a display unit configured to display the advertisement content, a display monitoring unit configured to photograph a video screen which is displayed on the display unit and actually seen from the passenger, and a display-result determining unit configured to calculate color-related information, which is information concerning a color of the video screen, based on an image photographed by the display monitoring unit and determine, based on the calculated color-related information and reference information for display result determination, which is information concerning a color of the advertisement content normally displayed on the display unit, whether the display of the advertisement content has been normally performed.