CN111259871A - Equipment and method for acquiring complete non-contact hand biological information and storage medium - Google Patents
Equipment and method for acquiring complete non-contact hand biological information and storage medium Download PDFInfo
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- CN111259871A CN111259871A CN202010224132.8A CN202010224132A CN111259871A CN 111259871 A CN111259871 A CN 111259871A CN 202010224132 A CN202010224132 A CN 202010224132A CN 111259871 A CN111259871 A CN 111259871A
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/60—Type of objects
- G06V20/64—Three-dimensional objects
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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
- G06V40/14—Vascular patterns
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Abstract
The application relates to the technical field of identification, and particularly discloses a device and a method for acquiring complete non-contact hand biological information and a storage medium. The method comprises the following steps: acquiring position information detected by a position sensing unit, and determining whether the position information meets a preset acquisition condition; if the position information does not accord with the preset acquisition condition, sending indication information to an indication unit according to the position information so that the indication unit carries out indication operation according to the indication information, wherein the indication operation is used for indicating a user to move the position of the part to be identified in the acquisition space; and if the position information meets the preset acquisition condition, determining at least one target light source from the at least one acquisition light source according to the position information, controlling the at least one target light source to work to illuminate the part to be identified, and controlling the acquisition unit to acquire the information to be identified of the part to be identified. The method can realize non-contact acquisition of effective information to be identified, reduce bacterial propagation and optimize sanitary conditions.
Description
Technical Field
The application relates to the technical field of identification, in particular to a device and a method for acquiring complete non-contact hand biological information and a storage medium.
Background
With the development of identity recognition technology, more and more types of recognition technology are applied to identity authentication, including various human biometric recognition, such as face recognition for authentication by recognizing a face, voiceprint recognition for authentication by recognizing voice, iris recognition for authentication by recognizing a pupil, finger vein recognition for authentication by recognizing a finger vein, and the like. In the finger vein recognition, the finger vein device is generally required to be in direct contact with a part to be recognized of a user to acquire finger vein data of the user, and if the finger vein device is applied to an unlimited population, the finger vein device is in contact with the part to be recognized of different populations, so that the problem of bacterial propagation can be caused, and the sanitary condition is worried.
Disclosure of Invention
The application provides a complete non-contact hand biological information acquisition device, method and storage medium, which can realize non-contact acquisition of effective information to be identified, reduce bacterial propagation and optimize sanitation conditions.
In a first aspect, the application provides a complete non-contact hand biological information acquisition device, comprising:
collecting a space;
the acquisition unit is arranged in the acquisition space;
the system comprises at least one acquisition light source, a light source module and a light source module, wherein the acquisition light source is arranged in an acquisition space, and is used for illuminating a part to be identified when the part to be identified of a user is positioned in the acquisition space;
the position sensing unit is arranged in the acquisition space and used for detecting the position information of the part to be identified of the user in the acquisition space;
the indicating unit is used for indicating the user to move the position of the part to be identified in the acquisition space;
the position sensing unit, the acquisition unit, the indicating unit and the at least one acquisition light source are all connected with the processing unit;
the processing unit is used for receiving the position information sent by the position sensing unit, controlling the indicating unit to perform indicating operation according to the position information, or determining at least one target light source from the at least one acquisition light source according to the position information and controlling the at least one target light source to work;
the processing unit is also used for controlling the acquisition unit to acquire the information to be identified of the part to be identified.
In a second aspect, the present application further provides a completely non-contact hand biological information acquisition method, applied to a processing unit of a completely non-contact hand biological information acquisition device, the method including:
acquiring position information detected by a position sensing unit, and determining whether the position information meets a preset acquisition condition, wherein the position information comprises the position of a part to be identified of a user in an acquisition space;
if the position information does not accord with the preset acquisition condition, sending indication information to an indication unit according to the position information so that the indication unit performs indication operation according to the indication information, wherein the indication operation is used for indicating the user to move the position of the part to be identified in the acquisition space;
and if the position information meets the preset acquisition condition, determining at least one target light source from at least one acquisition light source according to the position information, controlling the at least one target light source to work to illuminate the part to be identified, and controlling an acquisition unit to acquire the information to be identified of the part to be identified.
In a third aspect, the present application also provides a computer-readable storage medium storing a computer program which, when executed by a processor, causes the processor to implement the method for completely non-contact hand biometric information acquisition as described above.
The application discloses complete non-contact hand biological information acquisition equipment, method and storage medium, and the method comprises the following steps: acquiring position information detected by a position sensing unit, and determining whether the position information meets a preset acquisition condition, wherein the position information comprises the position of a part to be identified of a user in an acquisition space; if the position information does not accord with the preset acquisition condition, sending indication information to an indication unit according to the position information so that the indication unit performs indication operation according to the indication information, wherein the indication operation is used for indicating the user to move the position of the part to be identified in the acquisition space; and if the position information meets the preset acquisition condition, determining at least one target light source from at least one acquisition light source according to the position information, controlling the at least one target light source to work to illuminate the part to be identified, and controlling an acquisition unit to acquire the information to be identified of the part to be identified. Can detect the position information at user's the position of treating discernment through position induction unit, instruct the operation through indicating unit according to position information, in order to instruct the user to remove to treat discernment position to can gather effectual the collection position of treating discernment information, avoid user's the collection equipment of treating discernment position and complete non-contact hand biological information to take place the contact, shine the position of treating discernment through control and the corresponding at least one collection light source of position information simultaneously, can improve the validity of treating the discernment information of gathering the unit collection under the condition of carrying out non-contact collection, further improve the discernment rate of accuracy of the collection equipment of complete non-contact hand biological information.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a completely non-contact hand biological information acquisition device provided by an embodiment of the application;
FIG. 2 is a schematic structural diagram of another completely non-contact hand biological information acquisition device provided by the embodiment of the application;
FIG. 3 is a block diagram of a completely non-contact hand biological information acquisition device provided by an embodiment of the application;
FIG. 4 is a schematic structural diagram of another completely non-contact hand biological information acquisition device provided by the embodiment of the application;
FIG. 5 is a schematic structural diagram of another completely non-contact hand biological information acquisition device provided by the embodiment of the application;
FIG. 6 is a schematic structural diagram of another completely non-contact hand biological information acquisition device provided by the embodiment of the application;
FIG. 7 is a schematic structural diagram of another completely non-contact hand biological information acquisition device provided by the embodiment of the application;
FIG. 8 is a schematic structural diagram of another completely non-contact hand biological information acquisition device provided by the embodiment of the application;
FIG. 9 is a schematic flowchart of a completely non-contact hand biometric information collection method according to an embodiment of the present disclosure;
FIG. 10 is a schematic flow chart of another completely non-contact hand biometric information collection method according to the embodiment of the present application;
fig. 11 is a schematic flow chart of another completely non-contact hand biometric information acquisition method according to the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The flow diagrams depicted in the figures are merely illustrative and do not necessarily include all of the elements and operations/steps, nor do they necessarily have to be performed in the order depicted. For example, some operations/steps may be decomposed, combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
It is to be understood that the terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of the present application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
The embodiment of the application provides a completely non-contact hand biological information acquisition device, a completely non-contact hand biological information acquisition method and a completely non-contact hand biological information acquisition storage medium. Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a completely non-contact hand biological information acquisition device according to an embodiment of the present application, and as shown in fig. 1, the acquisition device includes an acquisition space 10, an acquisition unit 11, at least one acquisition light source 12, a position sensing unit 13, an indication unit (not shown), and a processing unit 14.
The collecting unit 11 is arranged in the collecting space 10, the collecting light source 12 is arranged in the collecting space 10, when the part to be identified of the user is located in the collecting space 10, the collecting light source 12 is used for illuminating the part to be identified, and the collecting unit 11 is used for collecting the information to be identified of the part to be identified. The collecting light source and the collecting unit can be arranged on the same side in the collecting space, and the collecting light source and the collecting unit are arranged on any side in the collecting space. The collecting light source and the collecting unit can also be arranged at different sides in the collecting space.
The part to be identified is a body part for carrying out biological identification authentication, the information to be identified is information for carrying out biological identification authentication, and the identity information of the user is determined by collecting the information to be identified of the part to be identified and carrying out biological identification authentication according to the information to be identified. In one embodiment, the part to be identified comprises a finger, a palm or a wrist to fingertip region, and the wrist to fingertip region may be the whole wrist to fingertip region or a partial wrist to fingertip region. The information to be identified may include a surface skin texture of the user, for example, a surface texture of a finger or a joint wrinkle texture, etc.
For example, the collecting space may be located inside a housing, and the housing is provided with an entrance through which a user may enter a finger into the collecting space. When the part to be identified of the user is positioned in the acquisition space, the acquisition unit and the acquisition light source are respectively arranged at two sides of the part to be identified.
In one embodiment, the acquisition unit comprises a vein image acquisition unit, the information to be identified comprises vein characteristic information, the vein characteristic information can be finger vein information or palm vein information, and finger 3D vein information or finger 3D vein information can be generated according to the vein information acquired by the acquisition unit and the image depth information detected by the depth detection unit; the information to be identified collected by the collecting unit can also comprise finger surface texture or palm surface texture, and can also generate finger 3D structure information or palm 3D structure information according to the surface texture collected by the collecting unit and the image depth information detected by the depth detecting unit.
The vein image acquisition unit is used for acquiring vein characteristic information in a part to be identified of a user so as to carry out identification authentication through the vein characteristic information to determine identity information of the user. The vein is hidden in the body, blood flows in the vein, and heme in the blood can absorb infrared light, so that vein characteristic information showing the shape of the vein can be acquired by irradiating the infrared light to a finger and shooting the part to be identified through the vein image acquisition unit.
The collecting light source is a light source for assisting the collecting unit to collect and image, and may be a near-infrared light source, and the collecting light source is used for irradiating the part to be identified so as to image the vein shape in the part to be identified.
In one embodiment, the collecting light source 12 is arranged at the top within the collecting space 10 and the collecting unit 11 is arranged at the bottom within the collecting space 10. As shown in fig. 1, the collecting light source 12 may be disposed on the top wall of the collecting space 10, and as shown in fig. 2, the collecting light source 12 may be disposed at any corner of the top of the collecting space 10. The user places the finger in the collection space, can indicate that the abdomen is down, and the collection light source can illuminate the finger back of user's finger, and the vein characteristic information of finger abdomen can be gathered to the collection unit.
The position sensing unit 13 is disposed in the collecting space 10, and the position sensing unit 13 is configured to detect position information of a to-be-identified portion of a user in the collecting space 10.
The traditional acquisition equipment for completely non-contact hand biological information is generally provided with a guide groove for guiding a user to place a part to be identified at a correct acquisition position, so that an acquisition unit can acquire effective information to be identified. The non-contact type complete non-contact hand biological information acquisition equipment provided in the embodiment of the application is not provided with a guide groove for guiding a user, but light of an acquisition light source for assisting in acquiring information to be identified cannot be seen by naked eyes, so that the user is difficult to autonomously place a part to be identified on a correct acquisition position, and the position information of the part to be identified of the user needs to be determined in other modes.
The position sensing unit is used for detecting the position of the part to be identified of the user in a non-contact mode and generating position information. The position information detected by the position sensing unit can determine whether the position of the part to be identified of the user in the acquisition space is correct, and if the position of the part to be identified is incorrect, the user needs to be prompted to move the part to be identified so as to move to the correct acquisition position.
The indicating unit is used for indicating operation to indicate the user to move the position of the part to be identified in the collecting space 10. The indication unit may be disposed in the acquisition space 10, or may be disposed outside the acquisition space 10.
The indicating unit can be used for performing visual indicating operation, and is correspondingly arranged outside the acquisition space so that a user can see the indicating operation made by the indicating unit. In one embodiment, the indication unit may comprise an indication light source and/or a display screen. The indicating unit can also perform indicating operation through sound, the indicating unit can be a loudspeaker, and the corresponding indicating unit can be arranged in the collecting space or outside the collecting space.
Illustratively, the position of the to-be-recognized part of the user detected by the position sensing unit is deviated to the left side by a first distance compared with the correct acquisition position, and an indication operation for prompting the user to move the to-be-recognized part to the right side by the first distance can be made by the indication unit. Visual indication operation can be performed, and indication operation can be performed by voice.
As shown in fig. 3, the position sensing unit 13, the acquisition unit 11, the indication unit 15 and the at least one acquisition light source 12 are all connected to the processing unit 14. The processing unit 14 may be arranged inside the acquisition space 10 or outside the acquisition space 10.
The processing unit 14 is configured to receive the position information sent by the position sensing unit 13, and control the indicating unit to perform an indicating operation according to the position information, or determine at least one target light source from the at least one collecting light source 12 according to the position information, and control the at least one target light source to operate; the processing unit 14 is also used for controlling the acquisition unit 11 to acquire the information to be identified of the part to be identified.
The Processing Unit 14 may be a chip having data Processing, communication and control functions, and the Processing Unit 14 may be, for example, a Central Processing Unit (CPU), a Micro Control Unit (MCU), a Field Programmable Gate Array (FPGA), or the like.
After detecting the position information of the part to be identified of the user, the position sensing unit 13 sends the position information to the processing unit 14; the processing unit 14 may match the acquired position information with a pre-stored collecting position to determine whether the position information of the to-be-identified portion of the user is a correct collecting position, and if the position information is not matched with the pre-stored collecting position, send instruction information to the indicating unit according to the position information, so that the indicating unit performs an indicating operation according to the instruction information.
If the position information is matched with the pre-stored acquisition position, it indicates that the part to be identified of the user is located at the correct acquisition position, and the operation of acquiring the information to be identified can be performed through the acquisition light source 12 and the acquisition unit 11.
The pre-stored acquisition position can be a preset space range, and the position information of the part to be identified of the user can be matched with the position information when falling into the space range, and the preset space range can be larger according to the requirements of practical application, so that the user can extend into the acquisition space 10 from different angles, or the position information of the part to be identified is different every time and can be matched. When the position information of the to-be-identified portion is different, the light beam of the collecting light source 12 with a corresponding angle is required to irradiate one side of the finger, so that the collecting unit 11 collects effective to-be-identified information. The collecting light source 12 may be disposed at different positions on one side in the collecting space 10, and the collecting light source 12 at different positions may irradiate light beams with different angles to the collecting position.
Therefore, when it is determined that the detected position information matches the pre-stored collecting position, at least one target light source can be determined from the at least one collecting light source 12, a light beam of the at least one target light source can irradiate one side of the part to be identified, and the at least one target light source is controlled to work, so that the collecting unit 11 can collect the part to be identified to obtain effective information to be identified. After controlling at least one target light source to work, the processing unit 14 is further configured to control the collecting unit 11 to perform collecting work, and the collecting unit 11 may collect information to be identified of a portion to be identified.
In one embodiment, as shown in fig. 4 to 5, the collecting light source 12 is disposed on a side wall inside the collecting space 10 and on a side close to the top of the collecting space 10, and the collecting unit 11 is disposed at the bottom of the collecting space 10. The collecting light source 12 may be disposed on either side wall.
In one embodiment, as shown in fig. 6 to 7, the collecting light sources 12 are respectively disposed on two opposite side walls in the collecting space 10, and are close to the top of the collecting space 10, and the collecting unit 11 is disposed at the bottom of the collecting space 10.
In one embodiment, the collection light source may be disposed on a top wall within the collection space, at any corner of the top of the collection space, and on a side wall of the collection space near the top of the collection space. The specific implementation manner may be set according to actual application requirements, and is not limited herein.
The embodiment of the application discloses a collection equipment of complete non-contact hand biological information, detect the position information at user's the position of treating discernment through the position induction unit, instruct the operation through indicating unit according to position information, in order to instruct the user to remove the position of treating discernment to can gather effectual the collection position of treating the discernment, avoid the user to treat discernment position and complete non-contact hand biological information's collection equipment to take place the contact, the one side of treating the discernment position is shone through control and the corresponding collection light source of position information simultaneously, can improve the validity of treating the discernment information of collection unit collection under the condition of carrying out non-contact collection, further improve the discernment accuracy of complete non-contact hand biological information's collection equipment.
In one embodiment, as shown in fig. 1, 2, 4 to 8, the fully non-contact hand biometric information acquisition device further comprises a light homogenizing assembly 120; the light-equalizing component 120 is arranged in the collecting space 10, and the light beam emitted by the collecting light source 12 illuminates one side of the part 20 to be identified through the light-equalizing component 120.
The light source for assisting in collecting the information to be identified is generally point-shaped light emitting, the light beam of the light source can be uniformly irradiated to the part to be identified of a user by arranging the light equalizing assembly, and the effectiveness of the information to be identified collected by the collecting unit can be further improved.
The light equalizing assembly can be arranged close to the collecting light source, can be arranged on one side where the light beam of the collecting light source emits, and is positioned between the collecting light source and the part to be identified when the part to be identified of a user is positioned in the collecting space.
In one embodiment, as shown in fig. 1, 2, 4 to 8, the completely non-contact hand biological information acquisition device further includes an optical filter 110, the optical filter 110 is disposed in the acquisition space 10, when the part to be identified 20 is located in the acquisition space 10, the optical filter 110 is located between the part to be identified 20 and the acquisition unit 11, and the acquisition unit 11 can acquire the information to be identified of the part to be identified 20 through the optical filter 110.
The optical filter may be disposed on one side of the collecting direction close to the collecting unit, for example, the optical filter may be disposed on the lens, and the optical filter may be disposed outside the lens or inside the lens. The acquisition unit is through the interference of light filter filtering interference light source, through setting up the light filter, completely cut off outside visible light source and influence the collection effect of acquisition unit, can further improve the validity of the information of treating the discernment that acquisition unit gathered.
In one embodiment, the position sensing unit comprises a proximity sensor and a depth detection unit, the position information comprises whether a part to be identified of the user, which is detected by the proximity sensor, is located in the acquisition space, and the image depth information of the part to be identified, which is detected by the depth detection unit;
the proximity sensor and the depth detection unit are connected with the processing unit, the proximity sensor is used for detecting whether a part to be identified of the user is located in the acquisition space or not, and the depth detection unit is used for sending the image depth information to the processing unit.
The proximity sensor is used for detecting whether a part to be identified of a user enters the acquisition space in a non-contact manner, and may include an optical sensor or a capacitive suspension induction sensor.
The image depth information includes distance information of each pixel point and the depth detection unit in an image formed by an object photographed by the depth detection unit. The depth detection unit may be a depth camera, and the depth camera may acquire distance information of the surface of the portion to be recognized and the depth camera as image depth information.
The proximity sensor can send the detection result to the processing unit, the processing unit can determine whether the work of acquisition and identification needs to be executed or not, and if the part to be identified of the user enters the acquisition space, the work of acquisition and identification needs to be executed to authenticate the identity information of the user. For example, after it is determined that the part to be identified of the user enters the acquisition space, the processing unit may trigger the indication unit to start, and exemplarily, the indication unit includes an indication light source, and may light the indication light source, so that the user moves the part to be identified to a position corresponding to the indication light source; the depth detection unit can be controlled to start to detect the image depth information of the part to be identified, the position information of the part to be identified of the user is determined according to the image depth information of the part to be identified, which is continuously detected by the depth detection unit, and the indication unit is controlled to perform indication operation according to the position information, or the acquisition light source and the acquisition unit are controlled to perform acquisition work.
The position information of the part to be identified is detected by arranging the proximity sensor and the depth detection unit, and after the identification operation is determined to be required to be acquired, modules such as the indication unit, the acquisition light source and the acquisition unit are triggered to start, so that unnecessary power consumption caused by continuous starting can be avoided.
Referring to fig. 9, fig. 9 is a schematic flowchart of a method for acquiring full non-contact hand biometric information according to an embodiment of the present application, where the method for acquiring full non-contact hand biometric information is applied to a processing unit of an apparatus for acquiring full non-contact hand biometric information, and as shown in fig. 9, the method includes steps S101 to S103.
S101, position information detected by a position sensing unit is obtained, and whether the position information meets a preset acquisition condition is determined, wherein the position information comprises the position of a part to be identified of a user in an acquisition space.
The position sensing unit is used for detecting the position of the part to be identified of the user in a non-contact mode and generating position information. As shown in fig. 1, a position sensing unit 13 is disposed in the collecting space 10, and the position sensing unit 13 is used for detecting the position information of the part to be identified of the user in the collecting space 10. The position information detected by the position sensing unit can determine whether the position of the part to be identified of the user in the acquisition space is correct, and if the position of the part to be identified is incorrect, the user needs to be prompted to move the part to be identified so as to move to the correct acquisition position.
The preset collection condition is used for judging whether the part to be identified of the user is in a correct collection position, for example, if the position information detected by the position sensing unit is matched with a pre-stored collection position, the position information can be determined to accord with the preset collection condition. And if the position information detected by the position sensing unit is not matched with the pre-stored acquisition position, determining that the position information does not accord with the preset acquisition condition.
And S102, if the position information does not accord with the preset acquisition condition, sending indication information to an indication unit according to the position information so that the indication unit performs indication operation according to the indication information, wherein the indication operation is used for indicating a user to move the position of the part to be identified in the acquisition space.
If the position information does not meet the preset acquisition condition, the part to be identified of the user is not located at the correct acquisition position, adjustment is needed, and indication operation can be performed through the indication unit, so that the user moves the part to be identified to the correct acquisition position.
The indicating unit is used for indicating operation so as to indicate a user to move the position of the part to be identified in the acquisition space. The indicating unit may be disposed in the collecting space or disposed outside the collecting space.
The indication unit may be an indication operation for performing visualization, and accordingly the indication unit is disposed outside the acquisition space so that a user can see the indication operation made by the indication unit. In one embodiment, the indication unit may comprise an indication light source and/or a display screen. The indicating unit can also perform indicating operation through sound, the indicating unit can be a loudspeaker, and the corresponding indicating unit can be arranged in the collecting space or outside the collecting space.
Illustratively, the position of the to-be-recognized part of the user detected by the position sensing unit is deviated to the left side by a first distance compared with the correct acquisition position, and an indication operation for prompting the user to move the to-be-recognized part to the right side by the first distance can be made by the indication unit. Visual indication operation can be performed, and indication operation can be performed by voice.
S103, if the position information meets the preset acquisition condition, determining at least one target light source from the at least one acquisition light source according to the position information, controlling the at least one target light source to work to illuminate the part to be identified, and controlling the acquisition unit to acquire the information to be identified of the part to be identified.
If the position information meets the preset acquisition condition, it indicates that the part to be identified of the user is located at the correct acquisition position, and the operation of acquiring the information to be identified can be performed through the acquisition light source 12 and the acquisition unit 11.
The pre-stored acquisition position can be a preset space range, and the position information of the part to be identified of the user can be matched with the position information when falling into the space range, and the preset space range can be larger according to the requirements of practical application, so that the user can extend into the acquisition space 10 from different angles, or the position information of the part to be identified at different times is different and can be matched. When the position information of the to-be-identified portion is different, the light beam of the collecting light source 12 with a corresponding angle is required to irradiate one side of the finger, so that the collecting unit 11 collects effective to-be-identified information. The collecting light source 12 may be disposed at different positions on one side in the collecting space 10, and the collecting light source 12 at different positions may irradiate light beams with different angles to the collecting position.
Therefore, when it is determined that the detected position information matches the pre-stored collecting position, at least one target light source can be determined from the at least one collecting light source 12, a light beam of the at least one target light source can irradiate one side of the part to be identified, and the at least one target light source is controlled to work, so that the collecting unit 11 can collect effective information to be identified of the part to be identified. When controlling at least one target light source to work, the processing unit 14 is further configured to control the collecting unit 11 to perform collecting work, and the collecting unit 11 may collect information to be identified of a portion to be identified.
The working principle of the collecting light source and the collecting unit can refer to the above description, and is not described herein again.
The embodiment of the application discloses a method for acquiring complete non-contact hand biological information, position information of a to-be-identified part of a user is detected through a position sensing unit, indication operation is performed through an indication unit according to the position information, the user is indicated to move the to-be-identified part to an acquisition position where effective to-be-identified information can be acquired, the to-be-identified part of the user is prevented from contacting with acquisition equipment of the complete non-contact hand biological information, meanwhile, one side of the to-be-identified part is irradiated by controlling at least one acquisition light source corresponding to the position information, the effectiveness of the to-be-identified information acquired by an acquisition unit can be improved under the condition of non-contact acquisition, and the identification accuracy of the acquisition equipment of the complete non-contact hand biological information is further improved.
In one embodiment, the position sensing unit comprises a proximity sensor and a depth detection unit, the position information comprises whether a part to be identified of the user, which is detected by the proximity sensor, is located in the acquisition space, and the image depth information of the part to be identified, which is detected by the depth detection unit;
before determining whether the position information meets the preset acquisition condition, the method further comprises the following operations:
if the part to be identified of the user is positioned in the acquisition space, triggering an indication unit to start;
correspondingly, the operation of determining whether the position information meets the preset acquisition condition may be implemented as follows:
and determining whether the position information meets a preset acquisition condition according to the image depth information of the part to be identified.
The proximity sensor is used for detecting whether a part to be identified of a user enters the acquisition space in a non-contact manner, and may include an optical sensor or a capacitive suspension induction sensor.
The image depth information includes distance information of each pixel point and the depth detection unit in an image formed by an object photographed by the depth detection unit. The depth detection unit may be a depth camera, and the depth camera may acquire distance information of the surface of the portion to be recognized and the depth camera as image depth information.
The proximity sensor can send the detection result to the processing unit, the processing unit can determine whether the work of collecting and identifying needs to be executed or not, and if the fact that the part to be identified of the user enters the collecting space is determined, the work of collecting and identifying needs to be executed to authenticate the identity information of the user can be determined. After determining that the part to be identified of the user enters the acquisition space, the processing unit may trigger the indication unit to start, illustratively, the indication unit includes an indication light source, and may light the indication light source, so that the user moves the part to be identified to a position corresponding to the indication light source; the depth detection unit can be controlled to start to detect the image depth information of the part to be identified, the position information of the part to be identified of the user is determined according to the image depth information of the part to be identified, which is continuously detected by the depth detection unit, and the indication unit is controlled to perform indication operation according to the position information, or the acquisition light source and the acquisition unit are controlled to perform acquisition work.
The position information of the part to be identified is detected by arranging the proximity sensor and the depth detection unit, and after the identification operation is determined to be required to be acquired, modules such as the indication unit, the acquisition light source and the acquisition unit are triggered to start, so that unnecessary power consumption caused by continuous starting can be avoided.
In one embodiment, as shown in fig. 10, the operation of determining whether the position information meets the preset acquisition condition according to the image depth information of the to-be-identified portion may be implemented as follows:
s1011, determining angle information and distance information of the part to be recognized of the user according to the image depth information of the part to be recognized;
s1012, if the angle information of the part to be identified meets a preset angle condition and the distance information meets a preset distance condition, determining that the position information meets a preset acquisition condition;
and S1013, if the angle information of the part to be identified does not accord with a preset angle condition and/or the distance information does not accord with a preset distance condition, determining that the position information does not accord with a preset acquisition condition.
The angle of the part to be recognized placed in the collecting space is different according to habits of different users, and the collecting unit can collect effective information to be recognized only by facing a certain specific direction of the part to be recognized. Meanwhile, the acquisition unit needs to have a relatively proper acquisition distance to acquire relatively clear and effective information to be identified, so that the angle information and the distance information of the part to be identified need to be considered at the same time.
The angle information may be an angle between a plane where the part to be recognized is located and a reference plane, and the reference plane may be a horizontal plane. The distance information may be a distance between the part to be recognized and the acquisition unit, and may be a distance between the part to be recognized and the acquisition unit, which is determined according to the image depth information of the part to be recognized detected by the depth detection unit.
The preset angle condition may be an angle interval, and if the angle information of the portion to be recognized belongs to the angle interval, it may be determined that the angle information of the portion to be recognized meets the preset angle condition. The preset distance condition may be a distance interval, and if the distance information of the to-be-identified portion belongs to the distance interval, it may be determined that the distance information of the to-be-identified portion meets the preset distance condition. If the angle information meets the preset angle condition and the distance information also meets the preset distance condition, the position to be recognized of the position to be recognized and the collecting unit can be determined to be in a proper collecting distance.
And if the angle information of the part to be recognized does not accord with the preset angle condition and/or the distance information does not accord with the preset distance condition, the acquisition unit may not acquire the effective information to be recognized, so that the position information is determined not to accord with the preset acquisition condition, and then the indication unit is used for indicating operation to adjust the position of the part to be recognized.
Accordingly, the indicating unit may be controlled to perform corresponding indicating operations, for example, including instructing the user to rotate and/or move the part to be identified, according to the angle information and the distance information of the part to be identified.
In one embodiment, as shown in fig. 7 and 8, the part to be recognized includes at least two fingers 21, and determining the angle information of the part to be recognized of the user according to the image depth information of the part to be recognized includes:
and determining the finger position of each finger according to the image depth information of each finger, and determining the angle information of the plane where at least two fingers are located according to the finger positions of at least two fingers.
The part to be identified may include a plurality of fingers of the user, that is, information to be identified of the plurality of fingers needs to be acquired. The finger position of each finger can be determined, the position relation between each finger and the depth detection unit can be determined according to the image depth information of each finger, and the finger position of each finger can be further determined according to the position relation and the position of the depth detection unit; as shown in fig. 8, a plane 201 where the plurality of fingers are located is further determined according to the finger positions of the plurality of fingers, and an included angle between the plane 201 and a horizontal plane may be determined as angle information of the part to be identified.
In one embodiment, as shown in fig. 11, the information to be identified includes vein feature information, and the method for acquiring full non-contact hand biological information further includes the following operations:
s104, acquiring vein feature information of the part to be identified, which is acquired by the acquisition unit, and acquiring image depth information of the part to be identified, which is detected by the depth detection unit;
s105, generating three-dimensional vein information according to the information to be identified and the image depth information;
and S106, determining the identity information of the user according to the three-dimensional vein information.
The acquisition unit can comprise a vein image acquisition unit, and the vein image acquisition unit is used for acquiring vein characteristic information in a part to be identified of a user so as to perform identification authentication through the vein characteristic information to determine identity information of the user. The vein is hidden in the body, blood flows in the vein, and heme in the blood can absorb infrared light, so that vein characteristic information showing the shape of the vein can be acquired by irradiating the infrared light to a finger and shooting the part to be identified through the vein image acquisition unit.
According to the collected vein feature information and the image depth information of the part to be identified, vein information including the three-dimensional structure of the part to be identified, namely three-dimensional vein information, can be formed. For example, when the portion to be recognized is a finger, vein information including a three-dimensional structure of the finger may be generated.
The identity information of the user is determined according to the three-dimensional vein information, the vein feature information of the user can be verified at the same time, the three-dimensional structure of the part to be recognized of the user can be verified, and the recognition accuracy can be improved.
In addition, the acquisition equipment of the completely non-contact hand biological information provided by the embodiment of the application can be applied to the acquisition and identification of a plurality of fingers, can further improve the identification accuracy by acquiring the three-dimensional vein information of the plurality of fingers, and can be applied to the identity authentication of a user group at the level of tens of millions or millions.
The embodiment of the application also provides a computer readable storage medium, the computer readable storage medium stores a computer program, the computer program comprises program instructions, and the processor executes the program instructions to realize any one of the completely non-contact hand biological information acquisition methods provided by the embodiment of the application.
The computer-readable storage medium may be an internal storage unit of the home appliance described in the foregoing embodiment, for example, a hard disk or a memory of the home appliance. The computer readable storage medium may also be an external storage device of the home appliance, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, provided on the home appliance.
While the invention has been described with reference to specific embodiments, the scope of the invention is not limited thereto, and those skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the invention, and these modifications or substitutions are intended to be included in the scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A full non-contact hand biological information acquisition device, comprising:
collecting a space;
the acquisition unit is arranged in the acquisition space;
the system comprises at least one acquisition light source, a light source module and a light source module, wherein the acquisition light source is arranged in an acquisition space, and is used for illuminating a part to be identified when the part to be identified of a user is positioned in the acquisition space;
the position sensing unit is arranged in the acquisition space and used for detecting the position information of the part to be identified of the user in the acquisition space;
the indicating unit is used for indicating the user to move the position of the part to be identified in the acquisition space;
the position sensing unit, the acquisition unit, the indicating unit and the at least one acquisition light source are all connected with the processing unit;
the processing unit is used for receiving the position information sent by the position sensing unit, controlling the indicating unit to perform indicating operation according to the position information, or determining at least one target light source from the acquisition light sources according to the position information, and controlling the at least one target light source to work to illuminate the part to be identified, and is also used for controlling the acquisition unit to acquire the information to be identified of the part to be identified.
2. The collection apparatus of claim 1, further comprising a light homogenizing assembly;
the light-equalizing assembly is arranged in the collecting space, and light beams emitted by the collecting light source illuminate the part to be identified through the light-equalizing assembly.
3. The apparatus according to claim 1, wherein the position sensing unit includes a proximity sensor and a depth detection unit, and the position information includes whether a part to be recognized of a user detected by the proximity sensor is located in the collection space, and image depth information of the part to be recognized detected by the depth detection unit;
the proximity sensor and the depth detection unit are connected with the processing unit, the proximity sensor is used for detecting whether a part to be identified of the user is located in the acquisition space and sending the part to the processing unit, and the depth detection unit is used for sending the image depth information to the processing unit.
4. The apparatus according to any one of claims 1 to 3, wherein the portion to be identified includes a finger, the acquisition unit includes a vein image acquisition unit, and the information to be identified includes vein feature information.
5. A method for acquiring completely non-contact hand biological information, which is applied to a processing unit of an acquisition device of completely non-contact hand biological information, and comprises the following steps:
acquiring position information detected by a position sensing unit, and determining whether the position information meets a preset acquisition condition, wherein the position information comprises the position of a part to be identified of a user in an acquisition space;
if the position information does not accord with the preset acquisition condition, sending indication information to an indication unit according to the position information so that the indication unit performs indication operation according to the indication information, wherein the indication operation is used for indicating the user to move the position of the part to be identified in the acquisition space;
and if the position information meets the preset acquisition condition, determining at least one target light source from at least one acquisition light source according to the position information, controlling the at least one target light source to work to illuminate the part to be identified, and controlling an acquisition unit to acquire the information to be identified of the part to be identified.
6. The method for acquiring completely non-contact hand biological information according to claim 5, wherein the position sensing unit comprises a proximity sensor and a depth detection unit, and the position information comprises whether a part to be identified of the user detected by the proximity sensor is located in the acquisition space or not and image depth information of the part to be identified detected by the depth detection unit;
before determining whether the position information meets a preset acquisition condition, the method further includes:
if the part to be identified of the user is located in the acquisition space, controlling the indicating unit to work;
the determining whether the position information meets a preset acquisition condition includes:
and determining whether the position information meets a preset acquisition condition according to the image depth information of the part to be identified.
7. The method for acquiring completely non-contact hand biological information according to claim 6, wherein the determining whether the position information meets a preset acquisition condition according to the image depth information of the part to be identified comprises:
determining angle information and distance information of the part to be recognized of the user according to the image depth information of the part to be recognized;
if the angle information of the part to be identified meets a preset angle condition and the distance information meets a preset distance condition, determining that the position information meets a preset acquisition condition;
and if the angle information of the part to be identified does not accord with a preset angle condition and/or the distance information does not accord with a preset distance condition, determining that the position information does not accord with a preset acquisition condition.
8. The method for acquiring completely non-contact hand biological information as claimed in claim 7, wherein the part to be identified comprises at least two fingers, and the determining the angle information of the part to be identified of the user according to the image depth information of the part to be identified comprises:
and determining the finger position of each finger according to the image depth information of each finger, and determining the angle information of the plane where the at least two fingers are located according to the finger positions of the at least two fingers.
9. The method of fully non-contact hand biometric information collection according to claim 6, wherein the information to be identified includes vein feature information, the method further comprising:
acquiring vein feature information of the part to be identified, which is acquired by the acquisition unit, and acquiring image depth information of the part to be identified, which is detected by the depth detection unit;
generating three-dimensional vein information according to the information to be identified and the image depth information;
and determining the identity information of the user according to the three-dimensional vein information.
10. A computer-readable storage medium, characterized in that it stores a computer program which, when executed by a processor, causes the processor to implement a method of fully contactless hand biometric information acquisition according to any of claims 5 to 9.
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