Application method and equipment for non-contact measurement of mouth opening

Abstract

The invention provides an application method for non-contact measurement of oral cavity opening, which is applied on a terminal equipped with at least an imaging device, a display screen, an electronic level, and a processor. The application method includes the following steps: using the imaging device to acquire The patient's mouth mouth image; identify the mouth mouth image, mark the edge position of the upper and lower gums, select a test line on the mouth mouth image, calculate the actual mouth opening value in combination with the conversion formula of focal length and pixel, store the mouth opening degree, The method measures the mouth opening in a non-contact manner to obtain accurate numerical values ​​of the mouth opening, ensuring that the measurement accuracy of the mouth opening is not interfered by human subjective factors.

Description

technical field [0001] The invention relates to the field of measurement applications, in particular to an application method and equipment for non-contact measurement of oral cavity opening. Background technique [0002] The mouth opening refers to the distance between the upper and lower incisors when the mouth is opened to the maximum. The normal value of the mouth opening is 3.5-5.6cm. Once oral temporomandibular joint and masticatory muscle problems occur, the mouth opening will deviate from the normal value. Therefore, the mouth opening measurement is often used to assist medical staff in early diagnosis of temporomandibular joint and masticatory muscle problems. [0003] At present, medical staff still use a physical scale with artificial data reading when measuring the mouth opening of the subject. However, the accuracy of such artificial measurement results is bound to be subject to the subjective influence of medical staff. First, in the actual measurement, it is ...

AI Technical Summary

Problems solved by technology

[0003] At present, medical staff still use physical scales and artificial data reading methods to measure the mouth opening of the subjects. However, the accuracy of such artificial measurement results is bound to be subject to the subjective influence of medical staff.

First, in the actual measurement, it is difficult for the medical staff to ensure that the mouth of the testee is in the correct measurement position

Second, when the medical staff read the opening degree, the reading may be inaccurate, which may lead to inaccurate measurement results of the opening degree.

[0004] In addition, for many people who suspect that their mouth opening is abnormal, they do not have objective testing equipment and medical knowledge for testing, and it is difficult for them to measure the mouth opening by themselves. Are you willing to spend time and energy going to the hospital for this purpose? Obtaining the help of medical staff will allow oral problems to develop in a worse direction, which in turn will delay the best time to see a doctor

Or, personnel can obtain the value of mouth opening degree by self-test, but due to lack of professional medical knowledge, it is impossible to accurately obtain the diagnosis result

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