Millimeter-wave based three-dimensional human body measurement system and measurement method

Abstract

The present invention relates to human body measurement, and more specifically to a three-dimensional human body measurement system and measurement method based on millimeter waves. A millimeter wave module generates a millimeter wave signal and transmits it to an antenna array module, and the antenna array module receives the echo signal of the object to be measured transmitted by the module. The antenna array module transmits a millimeter wave signal to the object to be measured, receives the echo signal of the object to be measured and transmits it to the millimeter wave module. A signal acquisition and processing module controls and switches the emission channel and reception channel of the millimeter wave module and acquires and processes the echo signal received by the millimeter wave module. An imaging algorithm and data processing module performs imaging algorithm calculations on the echo signal after it has been processed by the signal acquisition and processing module to realize three-dimensional imaging of the object to be measured and convert the three-dimensional image into three-dimensional human body morphology and three-dimensional human body data. The technical solution provided by the present invention can effectively overcome the shortcomings of low human body measurement accuracy and efficiency, and inability to adequately protect the personal privacy of the object to be measured.

Description

Technical Field

[0001] The present invention relates to human body measurement, and specifically to a three-dimensional human body measurement system and a measurement method based on millimeter waves.

Background Art

[0002] The conventional measurement method for human body size data is manual contact measurement. The measurer uses related equipment to measure the size information of each part of the human body of the measured person. Such a measurement method is convenient and has been used for a long time in conventional tailor shops and high-end clothing customization. However, due to the lack of professional measurement knowledge, the data obtained by manual contact measurement is not accurate, the measurement process takes a long time, and the measured person often feels fatigue or pain. Therefore, the application of non-contact measurement using equipment is becoming more and more widespread. Non-contact measurement mainly includes two-dimensional human body measurement and three-dimensional human body measurement.

[0003] For two-dimensional human body measurement, first, two-dimensional images of the front, back, and side of the measured person are taken, then preprocessing is performed on the images to obtain a clearer human body contour, and further, the size information of each part of the human body is calculated or simulated using a mathematical model. The side contour is extracted from the true side image of the measured person, the perimeter of the characteristic part is obtained, and finally, a perimeter prediction model is established. The two-dimensional human body measurement technology has high requirements for the model, large errors, and low measurement efficiency.

[0004] The measurement method of taking a human body photo using the shooting imaging principle is called passive three-dimensional human body measurement technology. It is based on two-dimensional photos and uses three-dimensional reconstruction technology to obtain a three-dimensional human body model, and can directly obtain color texture, effectively compensating for the deficiencies of active methods such as three-dimensional laser scanners. The passive three-dimensional human body measurement technology has low cost and simple measurement, but the cameras used in it have high requirements for shooting conditions, cannot restore all sensitive parts of the human body, and have large errors.

[0005] Currently, active three-dimensional human body measurement technologies that can penetrate clothing are basically X-ray scanning and millimeter-wave scanning. Unlike X-rays, which cause radiation damage, millimeter-wave scanning is harmless to the human body, and it is possible to perform a full-body scan on the subject without requiring them to remove their clothes, thereby obtaining a three-dimensional model of the human body and better protecting the subject's personal privacy. [Overview of the project] [Problems that the invention aims to solve]

[0006] In contrast to the aforementioned shortcomings of the prior art, the present invention provides a millimeter-wave based three-dimensional human body measurement system and measurement method, which can effectively overcome the shortcomings of the prior art, such as low accuracy and efficiency of human body measurement, and inability to adequately protect the privacy of the person being measured. [Means for solving the problem]

[0007] To achieve the above objectives, the present invention is realized by the following technical solutions.

[0008] A three-dimensional human body measurement system based on millimeter waves, comprising a millimeter wave module, an antenna array module, a signal acquisition and processing module, an imaging algorithm and a data processing module and terminal equipment, The millimeter-wave module generates a millimeter-wave signal and transmits it to the antenna array module, and the antenna array module receives the echo signal of the object being measured that it has transmitted. The antenna array module transmits a millimeter-wave signal to the object under measurement, receives an echo signal from the object under measurement, and transmits it to the millimeter-wave module. The signal acquisition and processing module controls and switches the emission and reception channels of the millimeter-wave module, and acquires and processes the echo signals received by the millimeter-wave module. The imaging algorithm and data processing module perform imaging algorithm calculations on the echo signal processed by the signal acquisition and processing module to achieve three-dimensional imaging of the object being measured, and convert the three-dimensional image into three-dimensional human body morphology and three-dimensional human body data. The terminal equipment includes control keys necessary for the system and is used to display three-dimensional images, three-dimensional human body morphology, and three-dimensional human body data of the object being measured, and has an audio broadcasting function.

[0009] Preferably, the system further includes a transmission module and a measuring structure module. The transmission module is used to drive the antenna array module to move along the measurement structure module, around the object being measured, and complete a full rotation. The measurement structure module is used to support the object to be measured and to house the millimeter-wave module, signal acquisition and processing module.

[0010] Preferably, the millimeter-wave module includes an emitting channel and a receiving channel, and the antenna array module includes an emitting antenna array and a receiving antenna array. The emission channel generates a millimeter-wave signal and transmits it to the emission antenna array, and the emission antenna array transmits the millimeter-wave signal to the object under measurement. The receiving antenna array receives the echo signal of the object under measurement and transmits it to the receiving channel, and the receiving channel receives the echo signal of the object under measurement and transmits it to the signal acquisition and processing module.

[0011] Preferably, the millimeter-wave module has an integrated receiving and emitting structure or a separate receiving and emitting structure. The emission channel and reception channel of the millimeter-wave module are one of the following: single emission single reception mode, single emission multiple reception mode, multiple emission single reception mode, or multiple emission multiple reception mode. The millimeter-wave signal generated by the emission channel of the aforementioned millimeter-wave module is either a pulsed signal or a continuous wave signal.

[0012] Preferably, the implementation of the emitting antenna array and receiving antenna array of the antenna array module includes microstrip antennas, horn antennas, slot antennas, and combinations thereof. The array arrangement configurations of the emitting antenna array and receiving antenna array of the aforementioned antenna array module include linear distribution, piecewise distribution, arcuate distribution, and irregular distribution.

[0013] Preferably, the material used to fabricate the measurement structure module includes tetrachloroethylene and a metal.

[0014] A three-dimensional human body measurement method based on millimeter waves, The transmission module is driven to move the antenna array module to a specified initial position, the object under measurement enters the measurement area in the measurement structure module and stands in a standard posture in step S1, Step S2 involves the terminal device broadcasting an audio message to indicate the start of measurement, and the emission channel of the millimeter-wave module generating a millimeter-wave signal and transmitting it to the antenna array module. Step S3 involves the emitting antenna array of the antenna array module transmitting a millimeter-wave signal to the object under measurement, while the receiving antenna array of the antenna array module receives an echo signal from the object under measurement and transmits it to the millimeter-wave module, thereby acquiring information about the object under measurement in a certain vertical dimension. Step S4 involves the receiving channel of the millimeter-wave module receiving the echo signal of the object under measurement and transmitting it to the signal acquisition and processing module, the signal acquisition and processing module acquiring and processing the echo signal received by the millimeter-wave module, and transmitting the processed echo signal to the imaging algorithm and data processing module. The transmission module drives the antenna array module to move along the measurement structure module around the object under measurement, repeating steps S3 to S4 until information in the horizontal dimension of the object under measurement is acquired, and step S5 is until the antenna array module returns to the specified initial position. Step S6 involves the terminal device broadcasting an audio message indicating the end of measurement, the millimeter-wave module and transmission module ceasing operation, and simultaneously the imaging algorithm and data processing module ceasing data reception. The imaging algorithm and the data processing module perform imaging algorithm operations on the echo signal after being processed by the signal collection and processing module to obtain a measurement result, and the terminal device includes step S7 of displaying the measurement result. Here, the measurement result includes the three-dimensional image, three-dimensional human body form, and three-dimensional human body data of the measurement target.

[0015] Preferably, the millimeter-wave module has an integrated structure of reception and emission or a separate structure of reception and emission. The emission channel and reception channel of the millimeter-wave module are one of the single emission single reception mode, single emission multiple reception mode, multiple emission single reception mode, and multiple emission multiple reception modes. The millimeter-wave signal generated by the emission channel of the millimeter-wave module is a pulse signal or a continuous wave signal.

[0016] Preferably, the implementation forms of the emission antenna array and reception antenna array of the antenna array module include microstrip antennas, horn antennas, slot antennas, and combinations thereof. The array arrangement forms of the emission antenna array and reception antenna array of the antenna array module include linear distribution, broken line distribution, arc-shaped distribution, and irregular distribution.

[0017] Preferably, the manufacturing materials of the measurement structure module include tetrachloroethylene and metals.

Effects of the Invention

[0018] Compared with the prior art, the millimeter-wave-based three-dimensional human body measurement system and measurement method provided by the present invention have the following beneficial effects: 1) Based on non-contact measurement, it greatly reduces measurement errors caused by external factors such as clothing. Especially in winter, the measurement error caused by clothing is larger. Compared with measurement methods such as infrared and laser, the present invention has the advantages of higher measurement accuracy and faster measurement speed. 2) It adopts millimeter-wave scanning, enabling the scanned object to conduct a full-body scan without the need to undress, achieving all restorations for sensitive parts of the human body, obtaining a delicate and complete three-dimensional human model, and better protecting the privacy of the scanned object. 3) It can be widely applied in scenarios such as hospitals, research institutions, clothing design, pilot selection, soldier selection, etc., and has significant application value for the research of human body shape changes, human health status, and some industries with strict requirements for human body shape.

Brief Description of the Drawings

[0019] To more clearly explain the technical solutions in the embodiments of the present invention or the prior art, the following briefly introduces the drawings necessary for the description of the embodiments or the prior art. Obviously, the drawings in the following description are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without creative efforts. [Figure 1] It is a system frame diagram of the present invention. [Figure 2] It is a schematic diagram of the system of the present invention. [Figure 3] It is a flowchart of the present invention. [Figure 4] It is a schematic diagram of the measurement results of the present invention.

Modes for Carrying Out the Invention

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following more clearly and completely describes the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

[0021] A three-dimensional human body measurement system based on millimeter waves, as shown in Figures 1 and 2, comprising a millimeter wave module 1, an antenna array module 2, a signal acquisition and processing module 3, an imaging algorithm and data processing module 4, and terminal equipment 5. The millimeter-wave module 1 generates a millimeter-wave signal and transmits it to the antenna array module 2, and the antenna array module 2 receives the echo signal of the object under measurement that it has transmitted. Antenna array module 2 transmits a millimeter-wave signal to the object under measurement, receives an echo signal from the object under measurement, and transmits it to millimeter-wave module 1. The signal acquisition and processing module 3 controls and switches between the emission channel 11 and reception channel 12 of the millimeter-wave module 1, and acquires and processes the echo signals received by the millimeter-wave module 1. The imaging algorithm and data processing module 4 performs imaging algorithm calculations on the echo signal processed by the signal acquisition and processing module 3 to achieve three-dimensional imaging of the object to be measured, and converts the three-dimensional image into three-dimensional human body morphology and three-dimensional human body data. Terminal device 5 includes control keys necessary for the system and is used to display a three-dimensional image of the object being measured, a three-dimensional human body morphology, and three-dimensional human body data, and has an audio broadcasting function.

[0022] Figure 4 is a schematic diagram of the measurement results of the present invention. The left side of the figure shows a three-dimensional image of the object being measured, and the right side shows a cross-sectional image of the human body along the left cross line. Three-dimensional human body morphology and three-dimensional human body data can be obtained from different cross-sectional images of the human body within the vertical dimension.

[0023] The technical solution of the present invention further includes a transmission module 6 and a measurement structure module 7 in a millimeter-wave based three-dimensional human body measurement system. The transmission module 6 is used to drive the antenna array module 2 to move along the measurement structure module 7 around the object to be measured, completing a full rotation. The measurement structure module 7 is used to support the object to be measured and to house the millimeter-wave module 1 and the signal acquisition and processing module 3.

[0024] The materials used to fabricate the measurement structure module 7 include tetrachloroethylene and metal.

[0025] In the technical solution of the present invention, the millimeter-wave module 1 includes an emission channel 11 and a receiving channel 12, and the antenna array module 2 includes an emission antenna array 21 and a receiving antenna array 22. The emission channel 11 generates a millimeter-wave signal and transmits it to the emission antenna array 21, and the emission antenna array 21 transmits the millimeter-wave signal to the object under measurement. The receiving antenna array 22 receives the echo signal of the object under measurement and transmits it to the receiving channel 12, and the receiving channel 12 receives the echo signal of the object under measurement and transmits it to the signal acquisition and processing module 3.

[0026] The millimeter-wave module 1 has either an integrated receiving and emitting structure or a separate receiving and emitting structure.

[0027] The emission channel 11 and reception channel 12 of the millimeter-wave module 1 are one of the following: single emission single reception mode, single emission multiple reception mode, multiple emission single reception mode, or multiple emission multiple reception mode.

[0028] The millimeter-wave signal generated by the emission channel 11 of the millimeter-wave module 1 is either a pulsed signal or a continuous wave signal.

[0029] The implementations of the emitting antenna array 21 and receiving antenna array 22 of the antenna array module 2 include microstrip antennas, horn antennas, slot antennas, and combinations thereof. The array arrangement configurations of the emitting antenna array 21 and receiving antenna array 22 of the antenna array module 2 include linear distribution, piecewise distribution, arcuate distribution, and irregular distribution.

[0030] The operating frequencies of the millimeter-wave module 1 and the antenna array module 2 include the millimeter-wave frequency band and the terahertz frequency band.

[0031] The present invention further discloses a three-dimensional human body measurement method based on millimeter waves, as shown in Figure 3, The transmission module 6 drives the antenna array module 2 to move to a specified initial position, the object to be measured enters the measurement area in the measurement structure module 7, and the object stands in a standard posture in step S1, Step S2 involves terminal device 5 broadcasting a voice message to indicate the start of measurement, and the emission channel 11 of millimeter-wave module 1 generating a millimeter-wave signal and transmitting it to antenna array module 2. Step S3 involves the emitting antenna array 21 of the antenna array module 2 transmitting a millimeter-wave signal to the object under measurement, while the receiving antenna array 22 of the antenna array module 2 receives an echo signal from the object under measurement and transmits it to the millimeter-wave module 1, thereby acquiring information about the object under measurement in a certain vertical dimension. Step S4 involves the receiving channel 12 of the millimeter-wave module 1 receiving the echo signal of the object under measurement and transmitting it to the signal acquisition and processing module 3, the signal acquisition and processing module 3 acquiring and processing the echo signal received by the millimeter-wave module 1, and transmitting the processed echo signal to the imaging algorithm and data processing module 4. The transmission module 6 drives the antenna array module 2 to move along the measurement structure module 7 around the object to be measured, repeating steps S3 to S4 until information in the horizontal dimension of the object to be measured is acquired, and step S5 is until the antenna array module 2 returns to the specified initial position. In step S6, terminal device 5 broadcasts an audio message indicating the end of measurement, the millimeter-wave module 1 and transmission module 6 stop operating, and at the same time, the imaging algorithm and data processing module 4 stop receiving data. The imaging algorithm and data processing module 4 performs imaging algorithm calculations on the echo signal processed by the signal acquisition and processing module 3 to obtain a measurement result, and the terminal device 5 displays the measurement result in step S7, which includes the following steps: Here, the measurement results include a three-dimensional image of the subject being measured, a three-dimensional human body morphology, and three-dimensional human body data.

[0032] Figure 4 is a schematic diagram of the measurement results of the present invention. The left side of the figure shows a three-dimensional image of the object being measured, and the right side shows a cross-sectional image of the human body along the left cross line. Three-dimensional human body morphology and three-dimensional human body data can be obtained from different cross-sectional images of the human body within the vertical dimension.

[0033] The millimeter-wave module 1 has either an integrated receiving and emitting structure or a separate receiving and emitting structure.

[0034] The emission channel 11 and reception channel 12 of the millimeter-wave module 1 are one of the following: single emission single reception mode, single emission multiple reception mode, multiple emission single reception mode, or multiple emission multiple reception mode.

[0035] The millimeter-wave signal generated by the emission channel 11 of the millimeter-wave module 1 is either a pulsed signal or a continuous wave signal.

[0036] The implementations of the emitting antenna array 21 and receiving antenna array 22 of the antenna array module 2 include microstrip antennas, horn antennas, slot antennas, and combinations thereof.

[0037] The array arrangement configurations of the emitting antenna array 21 and receiving antenna array 22 of the antenna array module 2 include linear distribution, piecewise distribution, arcuate distribution, and irregular distribution.

[0038] The materials used to fabricate the measurement structure module 7 include tetrachloroethylene and metal.

[0039] The above embodiments are merely for illustrating the technical solutions of the present invention and do not limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, as will be understood by those skilled in the art, it is still possible to modify the technical solutions described in the above embodiments or to substitute some of their technical features equally, and such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of each embodiment of the present invention.

Claims

1. It includes a millimeter-wave module (1), an antenna array module (2), a signal acquisition and processing module (3), an imaging algorithm and data processing module (4), and terminal equipment (5), The millimeter-wave module (1) generates a millimeter-wave signal and transmits it to the antenna array module (2), and receives the echo signal of the object under measurement transmitted by the antenna array module (2). The antenna array module (2) transmits a millimeter-wave signal to the object under measurement, receives an echo signal from the object under measurement, and transmits it to the millimeter-wave module (1). The signal acquisition and processing module (3) controls and switches the emission channel (11) and reception channel (12) of the millimeter-wave module (1), and acquires and processes the echo signal received by the millimeter-wave module (1). The imaging algorithm and data processing module (4) performs imaging algorithm calculations on the echo signal processed by the signal acquisition and processing module (3) to realize three-dimensional imaging of the object to be measured, and converts the three-dimensional image into three-dimensional human body morphology and three-dimensional human body data. A millimeter-wave-based three-dimensional human body measurement system characterized in that terminal equipment (5) includes control keys necessary for the system, is used to display a three-dimensional image of the object to be measured, a three-dimensional human body morphology and three-dimensional human body data, and has an audio broadcasting function.

2. The system further includes a transmission module (6) and a measuring structure module (7), The transmission module (6) is used to drive the antenna array module (2) to move along the measurement structure module (7) around the object to be measured, completing a full rotation. The millimeter-wave-based three-dimensional human body measurement system according to claim 1, characterized in that the measurement structure module (7) is used to support the object to be measured and to house the millimeter-wave module (1) and the signal acquisition and processing module (3).

3. The millimeter-wave module (1) includes an emission channel (11) and a reception channel (12), and the antenna array module (2) includes an emission antenna array (21) and a reception antenna array (22). The emission channel (11) generates a millimeter-wave signal and transmits it to the emission antenna array (21), and the emission antenna array (21) transmits the millimeter-wave signal to the object under measurement. The millimeter-wave-based three-dimensional human body measurement system according to claim 2, characterized in that the receiving antenna array (22) receives an echo signal of the object to be measured and transmits it to a receiving channel (12), and the receiving channel (12) receives an echo signal of the object to be measured and transmits it to a signal acquisition and processing module (3).

4. The millimeter-wave module (1) has either an integrated receiving and emitting structure or a separate receiving and emitting structure. The emission channel (11) and reception channel (12) of the millimeter-wave module (1) are one of the following: single emission single reception mode, single emission multiple reception mode, multiple emission single reception mode, and multiple emission multiple reception mode. The millimeter-wave-based three-dimensional human body measurement system according to claim 3, characterized in that the millimeter-wave signal generated by the emission channel (11) of the millimeter-wave module (1) is a pulse signal or a continuous wave signal.

5. The implementation of the emitting antenna array (21) and receiving antenna array (22) of the antenna array module (2) includes microstrip antennas, horn antennas, slot antennas, and combinations thereof. The millimeter-wave-based three-dimensional human body measurement system according to claim 3, characterized in that the array arrangement configuration of the emitting antenna array (21) and receiving antenna array (22) of the antenna array module (2) includes linear distribution, piecewise distribution, arc-shaped distribution, and irregular distribution.

6. The millimeter-wave-based three-dimensional human body measurement system according to claim 3, characterized in that the material used to manufacture the measurement structure module (7) includes tetrachloroethylene and a metal.

7. A three-dimensional human body measurement system based on millimeter waves according to claim 3, and a three-dimensional human body measurement method based on millimeter waves, The transmission module (6) is driven to move the antenna array module (2) to a specified initial position, the object to be measured enters the measurement area in the measurement structure module (7) and stands in a standard posture in step S1, Step S2 involves the terminal device (5) broadcasting the start of measurement via voice, and the emission channel (11) of the millimeter-wave module (1) generating a millimeter-wave signal and transmitting it to the antenna array module (2), Step S3 involves the emitting antenna array (21) of the antenna array module (2) transmitting a millimeter-wave signal to the object under measurement, while the receiving antenna array (22) of the antenna array module (2) receives an echo signal from the object under measurement and transmits it to the millimeter-wave module (1) to acquire information in a certain vertical dimension of the object under measurement. Step S4 involves the receiving channel (12) of the millimeter-wave module (1) receiving the echo signal of the object under measurement and transmitting it to the signal acquisition and processing module (3), the signal acquisition and processing module (3) acquiring and processing the echo signal received by the millimeter-wave module (1), and transmitting the processed echo signal to the imaging algorithm and data processing module (4), The transmission module (6) drives the antenna array module (2) to move along the measurement structure module (7) around the object to be measured, repeating steps S3 to S4 until information in the horizontal dimension of the object to be measured is acquired, and step S5 continues until the antenna array module (2) returns to the specified initial position. Step S6 involves the terminal device (5) broadcasting an audio message indicating the end of the measurement, the millimeter-wave module (1) and the transmission module (6) ceasing operation, and simultaneously the imaging algorithm and data processing module (4) ceasing data reception. The imaging algorithm and data processing module (4) performs imaging algorithm calculations on the echo signal after it has been processed by the signal acquisition and processing module (3) to obtain a measurement result, and the terminal device (5) displays the measurement result, including step S7. A millimeter-wave-based three-dimensional human body measurement method characterized in that the measurement results include a three-dimensional image of the object being measured, a three-dimensional human body morphology, and three-dimensional human body data.

8. The millimeter-wave module (1) has either an integrated receiving and emitting structure or a separate receiving and emitting structure. The emission channel (11) and reception channel (12) of the millimeter-wave module (1) are one of the following: single emission single reception mode, single emission multiple reception mode, multiple emission single reception mode, and multiple emission multiple reception mode. The millimeter-wave-based three-dimensional human body measurement method according to claim 7, characterized in that the millimeter-wave signal generated by the emission channel (11) of the millimeter-wave module (1) is a pulse signal or a continuous wave signal.

9. The implementation of the emitting antenna array (21) and receiving antenna array (22) of the antenna array module (2) includes microstrip antennas, horn antennas, slot antennas, and combinations thereof. The millimeter-wave-based three-dimensional human body measurement method according to claim 7, characterized in that the array arrangement configuration of the emitting antenna array (21) and receiving antenna array (22) of the antenna array module (2) includes linear distribution, piecewise distribution, arc-shaped distribution, and irregular distribution.

10. The millimeter-wave-based three-dimensional human body measurement method according to claim 7, characterized in that the material used to manufacture the measurement structure module (7) includes tetrachloroethylene and a metal.

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