Method for controlling camera lens based on pattern recognition

Abstract

The invention discloses a method for controlling a camera lens based on pattern recognition. The method for controlling the camera lens based on the pattern recognition is applied to education field. The method for controlling the camera lens comprises the following steps that images are captured, wherein a panoramic picture of each student is captured through a camera and the panoramic picture is input to a monitor; (2) speaker standing actions are detected, wherein when a student rises to speak, the position of the speaker is detected by a detection module according to the standing action of the speaker; (3) a camera pan-tilt rotates to a relative position and camera focal length is calculated; (4) the camera is rotate and the focal length is adjusted, and the camera is made to aim at the speaker so that closeup shoot is conducted on the speaker. The method for controlling the camera lens based on the pattern recognition eliminates tedious presetting position setting, directly recognizes the position where the student stands through the standing action of a moving image, directly controls operation of the camera head according to the recognized position, achieves closeup when the student speaks, and greatly reduces early workload of setting of the presetting position.

Description

Technical field [0001] The invention discloses a lens control method, particularly a pattern recognition lens control method applied in the education field. Background technique [0002] With the gradual development of video surveillance technology, the application of video surveillance in people’s lives has become more and more extensive. In the education industry, traditional video surveillance is usually used to record the teacher’s class and the student’s class performance. Camera monitoring has long been unable to meet people's needs, so people invented the form of monitoring when switching. At present, the commonly used technology is that when students in the subject stand up and speak, the student tracking machine needs to pull the camera to the position of the speaking student and give the speaker close-up. . The existing algorithm adopts the method of preset position, that is, the preset position of the camera corresponding to each student's close-up shot is set. Wh...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the above-mentioned shortcoming of the cumbersome switching operation of close-up shots of students in the prior art, the present invention provides a method for controlling shots based on pattern recognition, which directly recognizes the standing position of the student through the standing up action of the moving image, and directly controls the position according to this position. The camera pan-tilt operation achieves the effect of close-up of the camera when students speak

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