CN110909570A - Head image dynamic capturing device - Google Patents
Head image dynamic capturing device Download PDFInfo
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- CN110909570A CN110909570A CN201811081596.7A CN201811081596A CN110909570A CN 110909570 A CN110909570 A CN 110909570A CN 201811081596 A CN201811081596 A CN 201811081596A CN 110909570 A CN110909570 A CN 110909570A
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- 230000010287 polarization Effects 0.000 claims abstract description 44
- 230000003287 optical effect Effects 0.000 claims abstract description 21
- 230000008447 perception Effects 0.000 claims description 2
- 238000012986 modification Methods 0.000 abstract description 2
- 230000004048 modification Effects 0.000 abstract description 2
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 210000000697 sensory organ Anatomy 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
- G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
- G06V10/147—Details of sensors, e.g. sensor lenses
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- Engineering & Computer Science (AREA)
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- General Health & Medical Sciences (AREA)
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- Oral & Maxillofacial Surgery (AREA)
- Human Computer Interaction (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Studio Devices (AREA)
Abstract
The invention discloses a head image dynamic capture device, which comprises a shell, a lens, a polarization splitting prism, an optical filter, an infrared image pickup unit, a visible light image pickup unit, an infrared image processing unit and a central image processing unit, wherein the lens, the polarization splitting prism, the optical filter, the infrared image pickup unit, the visible light image pickup unit, the infrared image processing unit and the central image processing unit are arranged in the shell; the head image formed finally by the invention is formed under natural light rays without any modification treatment, so that the head image of a moving human body can be effectively and really captured.
Description
Technical Field
The present invention relates to an avatar capturing device, and more particularly, to a dynamic head image capturing device capable of capturing an image of a moving pedestrian's head.
Background
The identification confirmation (called as head portrait identification for short) through the identification of the head image is one of the important ways of the current rapid identification, and the identification confirmation through the acquisition of the head image of a static single body is widely applied to various terminals, such as mobile phones, detection equipment of security inspection ports and the like. The static identification has the disadvantage that the effective head image can be captured under the forbidden state, so that the efficiency is low, and particularly, the static identification causes serious queuing phenomenon in the peak period for places with large flow of people such as security inspection ports.
Therefore, there is a need for a head image dynamic capture apparatus capable of effectively and truly capturing a head image of a moving human body.
Disclosure of Invention
The present invention is directed to a head image dynamic capture apparatus capable of capturing a head image of a moving human body effectively and truly.
The invention provides head image dynamic capture equipment, which is used for capturing head images of a moving human body and is characterized by comprising a shell, a lens, a polarization beam splitter prism, an optical filter, an infrared image capture unit, a visible light image capture unit, an infrared image processing unit and a central image processing unit, wherein the lens, the polarization beam splitter prism, the optical filter and the infrared image capture unit are arranged in the shell in a movable manner, the polarization beam splitter prism is arranged right opposite to the lens, the optical filter is arranged right opposite to the polarization beam splitter prism, the polarization beam splitter prism is positioned between the lens and the optical filter, the infrared image capture unit is arranged right opposite to the optical filter, the optical filter is positioned between the polarization beam splitter prism and the infrared image capture unit, the visible light image capture unit is arranged right opposite to the polarization beam splitter prism, and the infrared image capture unit and the visible light image capture unit are arranged vertically, the infrared image pickup unit is positioned in the P polarization direction of the polarization splitting prism, the visible light image pickup unit is positioned in the S polarization direction of the polarization splitting prism, the infrared image processing unit is in communication connection with the infrared image pickup unit, the infrared image processing unit receives the infrared image captured by the infrared image pickup unit and then eliminates the head image of infrared perception to form a shielding image, the infrared image processing unit and the visible light image pickup unit are both in communication connection with the central image processing unit, and the central image processing unit performs shielding and eliminating processing on the common image captured by the visible light image pickup unit by utilizing the shielding image formed by the infrared image processing unit to form the head image.
Compared with the prior art, the invention realizes the change of the focal position of the lens through the movement of the lens relative to the shell in the moving crowd, thereby dynamically capturing the image of the moving human body in real time, and the image is clear, effective and accurate; the human body image captured by the lens enters the infrared image capturing unit through the polarization beam splitter prism and the optical filter to form a human body infrared image, the head of the human body is exposed to the outside directly and has five sense organs of a living body, so that the temperature of the head of the human body is slightly higher than that of the surrounding environment of the human body, the infrared image capturing unit has sensing capability sensitive to temperature difference, the human body head image in the human body infrared image formed in the infrared image capturing unit is more prominent relative to a trunk image, and the infrared image processing unit eliminates the prominent infrared sensing head image in the received infrared image to form a shielding image, namely the shielding image is the trunk image of the human body; meanwhile, the image of the human body captured by the lens enters the visible light image capturing unit through the polarization beam splitter prism to form a common image of the human body; the central image processing unit carries out shielding and elimination processing on the common image captured by the visible light image capturing unit by utilizing the shielding image formed by the infrared image processing unit, and finally the trunk image in the common image is shielded and eliminated by the shielding image, so that the common image only remains a head image, and the head image is the head image which is finally formed by the invention and is used for identifying the identity of the moving human body; therefore, the invention can effectively capture the head image of the moving human body, can effectively and truly provide the head image of the moving human body when being applied to identity recognition, and can carry out identity recognition by transmitting the head image to a recognition system which stores the standard head image of the person to be recognized for comparison.
Preferably, the head image dynamic capture device of the present invention further includes a support, the housing and the support are both in a cylindrical structure, the housing is sleeved outside the support, the support is arranged to slide up and down relative to the housing, a magnet is embedded around a circle in the support, the lens is horizontally embedded in the support, a coil is further disposed in the housing, when an alternating current is applied to the coil, the support can slide relative to the housing to enable the lens to move synchronously, and further, a focal position of the lens is changed; when the coil of the present application is energized with an alternating current, the energized coil will interact with the magnetic field of the magnets embedded around a circle in the support (i.e., an ampere force), because the magnet is embedded in the supporting piece, and the supporting piece can slide relative to the shell, the mutual acting force generated between the electrified coil and the magnet can enable the supporting piece to slide up and down in the shell, the change of the magnitude and the direction of the alternating current in the coil can change the displacement and the direction of the vertical sliding of the supporting piece in the shell, the sliding of the supporting piece can drive the lens embedded in the horizontal coil to synchronously slide up and down, the vertical sliding of the lens can enable the focal position of the lens to change, thereby realizing the adjustability of the focal position of the application, therefore, the focal position of the lens can be adjusted according to the moving pedestrian, and the accuracy of the captured head image is further improved.
Preferably, the head image dynamic capture device of the present invention further includes a power supply unit, the coil is electrically connected to the power supply unit through a control unit, the power supply unit provides an alternating current with a triangular waveform to the coil under the control of the control unit, and when the coil is supplied with the alternating current with a triangular waveform, the support slides relative to the housing to move the lens synchronously, so that the focal position of the lens changes.
Drawings
Fig. 1 is a schematic structural diagram of a head image dynamic capture device according to the present invention.
FIG. 2 is a functional block diagram of the head image generation of the present invention.
Detailed Description
Embodiments of the present invention will now be described with reference to the drawings, wherein like element numerals represent like elements.
As shown in fig. 1, the head image dynamic capture device 200 of the present invention is used for capturing a head image of a moving human body, the head image dynamic capture device 200 includes a housing 100, a lens 1 disposed in the housing 100, a polarization beam splitter 2, a filter 3, an infrared image pickup unit 4, a visible light image pickup unit 5, an infrared image processing unit 6, and a central image processing unit 7, the lens 1 is movably disposed in the housing 100, the polarization beam splitter 2 is disposed opposite to the lens 1, the polarization beam splitter 2 is a commonly used optical device, a Polarization Beam Splitter (PBS) capable of splitting incident unpolarized light into two perpendicular linear polarized lights, wherein the P polarized light completely passes through the polarization beam, the S polarized light is reflected at an angle of 45 degrees, the outgoing direction forms an angle of 90 degrees with the P polarized light, the polarization beam splitter is formed by a pair of high-precision right-angle prisms by gluing, the bevel edge of one prism is plated with a polarization beam splitting dielectric film; the optical filter 3 is arranged right opposite to the polarization splitting prism 2, the polarization splitting prism 2 is arranged between the lens 1 and the optical filter 3, the infrared image pickup unit 4 is arranged right opposite to the optical filter 3, the optical filter 3 is arranged between the polarization splitting prism 2 and the infrared image pickup unit 4, the visible light image pickup unit 5 is arranged right opposite to the polarization splitting prism 2, the infrared image pickup unit 4 is perpendicular to the visible light image pickup unit 5, the infrared image pickup unit 4 and the visible light image pickup unit 5 are respectively arranged right opposite to two adjacent side surfaces of the polarization splitting prism 2, the infrared image pickup unit 4 is arranged in the P polarization direction of the polarization splitting prism 2, the visible light image pickup unit 5 is arranged in the S polarization direction of the polarization splitting prism 2 (shown in a specific distribution figure 1), the infrared image processing unit 6 is in communication connection with the infrared image pickup unit 4, the infrared image processing unit 6 receives the infrared image captured by the infrared image pickup unit 4 and then eliminates the head image sensed by infrared to form a shielding image, the infrared image processing unit 6 and the visible light image pickup unit 5 are in communication connection with the central image processing unit 7, the central image processing unit 7 performs shielding and elimination processing on the common image captured by the visible light image pickup unit 5 by using the shielding image formed by the infrared image processing unit 6 to form a required head image, and the head image can be transmitted to the display 8 for real-time display and storage; when the head image formed by the head image dynamic capture device 200 of the present invention is used for identification, the head image is transmitted to an identification system storing a standard head image of a person to be identified for comparison, so as to identify the identity.
As shown in fig. 1, preferably, the head image dynamic capture apparatus 200 of the present invention further includes a support 10, the housing 100 and the support 10 are both cylindrical structures, the housing 100 is sleeved outside the support 10, the support 10 is configured to slide up and down relative to the housing 100, a magnet 11 is embedded in the support 10 around a circle, the lens 1 is horizontally embedded in the support 10, a coil 12 is further disposed in the housing 100, when the coil 12 is energized with an alternating current, the support 10 can slide relative to the housing 100 to enable the lens 1 to move synchronously, so that a focal position of the lens 1 changes; when the coil 12 of the present application is energized with an alternating current, the energized coil 12 will generate an interaction force (i.e. an ampere force) with the magnetic field of the magnet 11 embedded around the circumference in the support 10, because the magnet 11 is embedded in the support 10, and the support 10 can slide relative to the housing 100, the interaction force generated between the energized coil 12 and the magnet 11 will make the support 10 slide up and down in the housing 100, the change of the magnitude and direction of the alternating current in the coil 12 will change the displacement and direction of the support 10 sliding up and down in the housing 100, the sliding of the support 10 will drive the lens 1 embedded horizontally to slide up and down synchronously, the vertical sliding of the lens 1 will change the focal position thereof, thereby realizing the adjustability of the focal position of the present application, and further making the present application perform the adjustment of the focal position of the lens according to the moving pedestrian, thereby further improving the accuracy of the captured head image; more specifically, in order to further improve the moving precision of the lens 1, the head image capturing apparatus 200 of the present invention further includes a power unit 13, the coil 12 is electrically connected to the power unit 13 through a control unit 14, the power unit 13 provides the coil 12 with an ac current having a triangular waveform under the control of the control unit 14, when the coil 12 is supplied with the ac current having the triangular waveform, the support 10 slides relative to the housing 100 to move the lens 1 synchronously, so that the focal position of the lens 1 is changed.
Referring to fig. 1 and 2, in the moving crowd, the focus position of the lens 1 is changed by the movement of the lens 1 relative to the housing 100, so that the moving image 201 of the human body is captured dynamically in real time, and the image 201 is clear, effective and accurate; on one hand, an image 201 of a human body captured by the lens 1 enters the infrared image capturing unit 4 through the polarization beam splitter 2 and the optical filter 3 to form an infrared image 202 of the human body, because the head of the human body is directly exposed to the outside and has five sense organs of a living body, the temperature of the head of the human body is slightly higher than that of the surrounding environment, the infrared image capturing unit 4 has sensing capability sensitive to temperature difference, the head image of the human body in the infrared image 202 of the human body formed in the infrared image capturing unit 4 is more prominent than that of a trunk image, and therefore the infrared image processing unit 6 eliminates the prominent infrared sensed head image in the received infrared image 202 to form a shielding image 203, namely the shielding image 203 is a trunk image of the human body; meanwhile, the image of the human body captured by the lens 1 enters the visible light image capturing unit 5 through the polarization beam splitter prism 2 to form a common image 204 of the human body; the central image processing unit 7 performs occlusion and elimination processing on the common image 204 captured by the visible light image pickup unit 5 by using the occlusion image 203 formed by the infrared image processing unit 6, and finally, the trunk image in the common image 204 is occluded and eliminated by the occlusion image 203, so that only the head image is left in the common image 204, the head image 205 is the head image finally formed by the invention for identifying the identity of the moving human body, and the head image 205 finally formed by the invention is formed under natural light without any modification processing, so that the real information of the head of the person to be identified can be effectively and really reflected; therefore, the invention can effectively capture the head image of the moving human body, can effectively and truly provide the head image of the moving human body when being applied to identity recognition, and can carry out identity recognition by transmitting the head image to a recognition system which stores the standard head image of the person to be recognized for comparison.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.
Claims (3)
1. A head image dynamic capture device is used for capturing head images of a moving human body and is characterized by comprising a shell, a lens, a polarization beam splitter prism, an optical filter, an infrared image capture unit, a visible light image capture unit, an infrared image processing unit and a central image processing unit, wherein the lens, the polarization beam splitter prism, the optical filter, the visible light image capture unit, the infrared image processing unit and the central image processing unit are arranged in the shell in a movable mode, the polarization beam splitter prism is arranged right opposite to the lens, the optical filter is arranged right opposite to the polarization beam splitter prism, the polarization beam splitter prism is arranged between the lens and the optical filter, the infrared image capture unit is arranged right opposite to the optical filter, the optical filter is arranged between the polarization beam splitter prism and the infrared image capture unit, the visible light image capture unit is arranged right opposite to the polarization beam splitter prism, and the infrared image capture unit is arranged perpendicular to the visible light image capture unit, the infrared image pickup unit is positioned in the P polarization direction of the polarization splitting prism, the visible light image pickup unit is positioned in the S polarization direction of the polarization splitting prism, the infrared image processing unit is in communication connection with the infrared image pickup unit, the infrared image processing unit receives the infrared image captured by the infrared image pickup unit and then eliminates the head image of infrared perception to form a shielding image, the infrared image processing unit and the visible light image pickup unit are both in communication connection with the central image processing unit, and the central image processing unit performs shielding and eliminating processing on the common image captured by the visible light image pickup unit by utilizing the shielding image formed by the infrared image processing unit to form the head image.
2. The head image dynamic capture device of claim 1, further comprising a support, wherein the housing and the support are both cylindrical, the housing is sleeved outside the support, the support is configured to slide up and down relative to the housing, a magnet is embedded around the support, the lens is horizontally embedded in the support, a coil is further disposed in the housing, and when an ac current is applied to the coil, the support can slide relative to the housing to move the lens synchronously, so that the focal position of the lens changes.
3. The head image dynamic capture apparatus of claim 2, further comprising a power unit, wherein the coil is electrically connected to the power unit through a control unit, the power unit provides an ac current with a triangular waveform to the coil under the control of the control unit, and when the ac current with a triangular waveform is applied to the coil, the support slides relative to the housing to move the lens synchronously, so that the focal position of the lens changes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811081596.7A CN110909570A (en) | 2018-09-17 | 2018-09-17 | Head image dynamic capturing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811081596.7A CN110909570A (en) | 2018-09-17 | 2018-09-17 | Head image dynamic capturing device |
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| CN110909570A true CN110909570A (en) | 2020-03-24 |
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| CN201811081596.7A Pending CN110909570A (en) | 2018-09-17 | 2018-09-17 | Head image dynamic capturing device |
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