Laser pen indication and luminescent spot track recognizing method

Abstract

The present invention discloses a laser pen indicating and light spot trajectory identification method which belongs to the interactive reorganization technical field. Step 1, according to laser pen indicating information, a user obtains video information of a display screen from a video input device; step 2, an embedded device extracts light spots from the acquired video information, and determines the positions of the light spots after a de-noising process; step 3, the position coordinates of the light spots are transmitted to a computer which controls a target screen; step 4, according to the position coordinates of the light spots, the computer which controls the target screen recognizes the light spot trajectory; with the specific light spot information, the trajectory information indicated by the user is obtained; when the recognition is succeeded, step 5 is carried out; step 5, after the trajectory recognition is succeeded, the trajectory of the recognition result of the original trajectory is optimized, so that a new trajectory is obtained; the optimized result is displayed with visually optimized effect on the target screen to replace the indication effect of the step 3. The method can be applied in various interactive recognition display circumstances so as to carry out highly effective light spot analysis and trajectory recognition.

Description

technical field [0001] The invention relates to a method in the field of optoelectronic technology, in particular to a method for laser pointer indication and light spot track recognition. Background technique [0002] In recent years, with the continuous change of the teaching environment and the continuous expansion of the scale, the learning efficiency has been affected to a certain extent. Therefore, various technologies applied to the large-scale teaching environment have been proposed one after another. In terms of the display effect of the teaching screen, it is different from the physical equipment. Various improved intelligent technologies are also being widely used and applied to various interactive identification display environments. [0003] After searching the literature of the prior art, it was found that the Chinese patent application number 200710026848.1, the patent name is "Method for Replacing Button Input with Photoelectric Trajectory Input", the patent ...

AI Technical Summary

Problems solved by technology

However, the target screen size of the applicable object of this method is limited, and the accuracy required by the ordinary projection screen size cannot be achieved. Due to the uncertainty of the control object, it lacks universal applicability. Due to the limitation of factors, the above-mentioned deficiencies will easily lead to difficulties in operation for users

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