Key movement recognition device and key movement detection system and detection method

Abstract

The invention relates to the technical field of detection, in particular to a key movement recognition device and a key movement detection system and detection method. The key movement recognition device of the invention comprises a bracket and multiple rotating members, wherein the rotating members are arranged on the bracket, the rotating members can rotate relative to the bracket, and an recognition block is arranged on the upper part of each rotating member; the two ends of the bracket are respectively provided with positioning recognition blocks. The key movement recognition device of thepresent invention has a simple structure, and can convert the up-down movement of the key into the horizontal movement of the key movement recognition device, thereby facilitating the information processing unit to recognize the key movement. The technical scheme of the key movement detection system and the detection method discard the traditional method of directly detecting the up and down motion of the key, convert the up and down motion of the key into the horizontal motion, not only reduces the requirement of the image acquisition system on the light, but also greatly improves the accuracy of the detection, facilitates the daily practice of the performer and corrects mistakes.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a keyboard motion recognition device, a keyboard motion detection system and a detection method. Background technique [0002] The piano is a common musical instrument among key instruments. Ordinary audiences cannot evaluate the player's performance level of playing piano and other key instruments without professional knowledge. For players, in the process of practicing alone, it is difficult to improve their training level without knowing their mistakes. [0003] At present, there is a big-eyed sparring robot for music notes on the market, which uses a machine vision solution to monitor the piano keys. It first pastes white and black patches on the piano keys (white keys are pasted black and black keys are pasted white ), through the camera above the keys to detect the movement of the patch, the occlusion changes of the keys themselves, and indirectly detect the keyboard ac...

AI Technical Summary

Problems solved by technology

This method has the following disadvantages: 1) the patch only moves up and down with the keys, which is extremely unfavorable for camera monitoring, and it is difficult for the processing system to judge the movement perpendicular to the screen; 2) monitor the up and down of the white and black patches Sports require very high light and need additional fill light, which is very troublesome for the player

And above-mentioned shortcoming easily causes the judgment mistake of piano key action, and the practitioner presses the button correctly, and analysis unit judgment does not press, causes confusion easily, is unfavorable for the player to correct the mistake

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