Pharyngeal swab image recognition and positioning method

Abstract

The present invention provides a throat swab image identification and positioning method, comprising: S1, obtaining a remote acquisition image by shooting at the acquisition remote end, identifying the circular outline of the mouthpiece in the remote acquisition image, and obtaining the pixel coordinates of the center of the mouthpiece; S2. Correct the position of the pharyngeal swab collection mechanism so that the pixel coordinates of the center of the mouthpiece coincide with the pre-calibrated standard pixel coordinates of the center of the mouthpiece, and perform rough positioning; S3. Shoot at the near-end to obtain the near-end acquisition image and identify the near-end The pixel coordinates of the center of the uvula in the image collected by the terminal; S4. Calculate the pixel coordinates of the replacement point in the collection area according to the pixel coordinates of the center of the uvula, and correct the position of the throat swab collection mechanism so that the pixel coordinates of the center of the light spot calibrated in advance and the pixel coordinates of the replacement point The pixel coordinates coincide for precise positioning. The present invention improves the identification and positioning accuracy of the collection area through two-step positioning, and can accurately guide the throat swab collection mechanism to move to the location of the collection area.

Description

technical field [0001] The invention relates to the technical field of throat swab sampling, in particular to a throat swab image recognition and positioning method. Background technique [0002] The substance for nucleic acid detection is the nucleic acid of the virus. Nucleic acid detection is to find out whether there is nucleic acid of foreign invading virus in the patient's respiratory specimen, blood or feces to determine whether he is infected by the new coronavirus. Therefore, once the test is "positive" for nucleic acid, it can prove that there is a virus in the patient's body. [0003] At present, the most commonly used nucleic acid detection method is artificial throat swab detection, which requires medical staff to hold the throat swab and insert it into the mouth of the nucleic acid tester, and wipe the pharynx, tonsils, palatal arch and other parts to collect secretions from these parts. This detection method puts medical staff at the risk of being infected b...

AI Technical Summary

Problems solved by technology

[0004] The automatic collection of the throat swab collection mechanism needs to identify and locate the collection area in the mouth of the nucleic acid tester to guide the throat swab collection mechanism to move to the collection area for sampling, and the accuracy of the identification and positioning method of the collection area in the prior art is relatively low Poor, unable to guide the throat swab collection mechanism to accurately move to the location of the collection area

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