Game Ticket Decoding with Early Image Processing Under Variable Light
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Solution Overview
Problem
Existing decoding methods for betting slips require acquiring two images under different lighting conditions, which increases decoding time due to the fixed 300ms delay for data acquisition, and using a single image is less efficient due to variations in ambient light.
Innovation Solution
A decoding device and method that utilize two images acquired under different lighting conditions, performing part of the decoding during the time lapse between image acquisitions, including early and main decoding steps to locate and determine the type and state of the betting slip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two images are acquired under different lighting conditions, then decoding robustness is improved, but decoding time increases due to fixed 300ms acquisition delay
Solution Approach 1:
The patent performs preliminary decoding operations during the time lapse between acquiring the first image (with lighting) and the second image (without lighting). Specifically, it carries out early decoding steps including locating the betting slip, determining its type, and identifying square positions using only the first image. This preliminary action utilizes the otherwise wasted time period, allowing the main decoding to start earlier and reducing overall decoding time while maintaining the benefits of two-image acquisition for robustness.
2Productivity
If a single image is used for decoding, then decoding time is reduced, but decoding efficiency decreases due to ambient light variations
Solution Approach 1:
The patent performs preliminary decoding operations during the time lapse between acquiring the first image (with lighting) and the second image (without lighting). Specifically, it carries out early decoding steps including locating the betting slip, determining its type, and identifying square positions using only the first image. This preliminary action utilizes the otherwise wasted time period, allowing the main decoding to start earlier and reducing overall decoding time while maintaining the benefits of two-image acquisition for robustness.
Data Source
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Figure 3
Figure 4-a
AI summary
Disclosed is a method for decoding a game ticket, a device and a computer program product. The method is carried out by means of a decoding device. The device comprises a device for illuminating the game ticket and a device for acquiring an image of the game ticket. The decoding comprises a plurality of processing operations. The method comprises the following steps, implemented by a processing unit of the decoding device: - acquisition of a first image of the game ticket when the illumination device is switched on and; - acquisition of a second image of the game ticket when the illumination device is switched off and; - main decoding of the game ticket, carrying out a portion of the plurality of processing operations based on a subtraction of the first image and the second image. The method further comprises a step of advance decoding of the game ticket, carrying out the other portion of the plurality of processing operations, based on the first image. The advance decoding step is carried out between the step of acquiring the first image and the step of acquiring the second image.