Correcting device and correcting method

Abstract

The invention provides a correcting device applied to an image processing device. The correcting device comprises a first operation module, a second operation module and a regulation module. The first operation module determines a third indication point and a fourth indication point according to a first indication point, a second indication point and a specific point, and determines a preset position of a correcting point or a photo-sensitive element through a first straight line between the first indication point and the third indication point and a second straight line between the second indication point and the fourth indication point. The second operation module forms a plurality of reference lines according to a plurality of reference points and the correcting point and forms a plurality of reference angles according to the plurality of reference lines and a datum line, generates a plurality of reference point coordinates corresponding to the plurality of reference points in an observed image respectively, and generates a correcting function according to the plurality of reference point coordinates and the plurality of reference angles.

Description

technical field [0001] The present invention is related to image processing, and in particular to a calibration device and method for calibrating a photosensitive element of an image processing device. Background technique [0002] In recent years, with the continuous evolution of image processing technology, various input methods that can bring convenience to users, such as touch screen, voice-activated input, and gesture capture input, have gradually attracted the attention of the market and have begun to develop rapidly. . [0003] As far as the common optical touch screens on the market are concerned, such screens usually include more than two photosensitive elements for detecting the status of touch points on the screen. For example, when the user projects light onto the screen to form a light spot, the optical touch screen can capture an image corresponding to the screen through the photosensitive element, and use image processing technology to determine where the lig...

AI Technical Summary

Problems solved by technology

[0005] However, if the position or angle of the photosensitive element of the optical touch screen deviates, it will have a considerable impact on the accuracy of the detected touch point state.

In severe cases, these deviations may even cause errors in the interpretation of the touch points input by the user.

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