BrightBoard in Use |
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A camera fixed to the ceiling watches the activity on the board. It is connected to a computer which uses low-resolution images to detect when the user has stepped aside and so is not obscuring the board. The system then captures a high resolution image, thresholds it, and attempts to recognise the marks that are in the image.
Details of the marks found, their position, and their type if recognised, are passed to a Prolog engine which can analyse the relationships between them and so determine if the combination of symbols required to constitute, say, a 'Print' command are present on the board. Appropriate actions can then be taken. |
