CN112770032A - Image acquisition method, device, equipment and computer readable storage medium - Google Patents
Image acquisition method, device, equipment and computer readable storage medium Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/695—Control of camera direction for changing a field of view, e.g. pan, tilt or based on tracking of objects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/555—Constructional details for picking-up images in sites, inaccessible due to their dimensions or hazardous conditions, e.g. endoscopes or borescopes
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- H—ELECTRICITY
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/30—Transforming light or analogous information into electric information
- H04N5/33—Transforming infrared radiation
Abstract
The application provides an image acquisition method, an image acquisition device, image acquisition equipment and a computer-readable storage medium, wherein the method comprises the following steps: receiving first image information of an acquired object sent by a camera; detecting whether the first image information meets a predetermined condition; if the first image information does not meet the preset condition, acquiring a first distance between the acquired object and the camera; acquiring a reference distance range; determining a first direction according to the first distance and the reference distance range, wherein the first direction is used for indicating a first moving direction of the acquired object; and generating a first control instruction according to the first direction, and sending the first control instruction to a display device so that the display device generates a first display picture according to the first control instruction, wherein the first display picture is used for displaying the first direction. The method realizes non-contact pattern acquisition and has high safety.
Description
Technical Field
The present application relates to the field of image processing technologies, and in particular, to an image acquisition method, an image acquisition apparatus, an image acquisition device, and a computer-readable storage medium.
Background
The vein authentication technology is a technology for identifying an identity by using vein blood vessels under the skin as an identity feature. Because the vein blood vessel of the human body is hidden under the skin and is not easy to forge, the vein feature identification technology is an identity identification technology with high reliability and has good application prospect.
However, the existing image acquisition mode mostly uses a support to prompt the reference position of the hand pulse acquisition of people, and hands of different people are easy to infect viruses and bacteria by contacting the support, so that the safety is low.
Disclosure of Invention
The application aims to provide an image acquisition method, an image acquisition device, image acquisition equipment and a computer readable storage medium, so that non-contact image acquisition is realized, and the safety is high.
The purpose of the application is realized by adopting the following technical scheme:
in a first aspect, the present application provides an image capturing method, where the image capturing method is applied to an image capturing apparatus, where the image capturing apparatus includes a camera and a display device, and the method includes: receiving first image information of an acquired object sent by the camera; detecting whether the first image information meets a predetermined condition; if the first image information does not meet the preset condition, acquiring a first distance between the acquired object and the camera; acquiring a reference distance range; determining a first direction according to the first distance and the reference distance range, wherein the first direction is used for indicating a first moving direction of the acquired object; and generating a first control instruction according to the first direction, and sending the first control instruction to the display device so that the display device generates a first display picture according to the first control instruction, wherein the first display picture is used for displaying the first direction. The beneficial effects of this technical scheme lie in, through setting up display device, display device can show first direction to the suggestion is gathered the object and is adjusted the position according to first direction, accomplishes image acquisition. In the whole image acquisition process, the acquired object can not contact the image acquisition equipment, so that the propagation risk of viruses and bacteria is reduced, and the method is safe and reliable.
In some optional embodiments, the method further comprises: if the first image information meets the preset condition, acquiring identification information of the acquired object; and storing the first image information and the identification information of the acquired object in a correlation manner. Specifically, the identification information may be a name or a number of the captured object, such as the palm 001, and each identification information may correspond to a unique captured object. The technical scheme has the advantages that the first image information and the identification information of the acquired object are stored in a correlation mode, the identification information of the acquired object and the acquired image information are input, and the method can be subsequently used for functions of identity recognition and the like and is convenient to manage.
In some optional embodiments, the acquiring a first distance between the captured object and the camera comprises: acquiring position information of the acquired object according to the first image information; acquiring a first distance between the acquired object and the camera according to the position information of the acquired object; or, the acquiring a first distance between the acquired object and the camera includes: and receiving a first distance between the collected object and the camera, which is sent by a distance sensor. The technical scheme has the advantages that the first distance can be calculated according to the first image information, the first distance can also be directly obtained by receiving data sent by the distance sensor, and whether the position of the acquired object meets the preset condition of image acquisition can be judged through the acquired first distance.
In some optional embodiments, the determining a first direction according to the first distance and the reference distance range includes: detecting whether the first distance is in the reference distance range; determining that the first direction is a direction approaching the camera if the first distance is greater than the maximum value of the reference distance range; determining that the first direction is a direction away from the camera if the first distance is less than the minimum of the reference distance range. The technical scheme has the advantages that the first direction can be determined by comparing the first distance with the reference distance range, so that the adjustment mode of the position of the acquired object can be determined, and the image acquisition is completed.
In some optional embodiments, the method further comprises: acquiring identification information of the acquired object and identification information of the camera; the generating a first control instruction according to the first direction includes: and generating the first control instruction according to the first direction, the identification information of the acquired object and the identification information of the camera, wherein the first display picture is also used for displaying the identification information of the acquired object and the identification information of the camera. Specifically, the identification information may be text information, and the identification information may also be graphic information. The technical scheme has the advantages that the identification information of the collected object and the identification information of the camera are displayed in the first display picture, so that the position relation between the collected object and the camera can be displayed more clearly and visually, and the user operation is facilitated.
In some optional embodiments, the method further comprises: receiving second image information of the acquired object sent by the camera; detecting whether the second image information satisfies the predetermined condition; if the second image information meets the preset condition, acquiring the identification information of the acquired object, and storing the second image information and the identification information of the acquired object in a correlated manner; if the second image information does not meet the preset condition, acquiring a second distance between the acquired object and the camera; determining a second direction according to the second distance and the reference distance range, wherein the second direction is used for indicating a second moving direction of the acquired object; detecting whether the directions of the first direction and the second direction are the same or approximately the same; and if not, generating a second control instruction according to the second direction, and sending the second control instruction to the display device so that the display device generates a second display picture according to the second control instruction, wherein the second display picture is used for displaying the second direction. The technical scheme has the advantages that whether the position of the acquired object meets the preset condition of image acquisition or not can be judged according to the second distance; by comparing the second direction with the first direction, if the directions of the second direction and the first direction are different and not approximately the same, the display device can generate a second display picture, display the position relation between the collected object and the camera, and facilitate the user to adjust the position of the collected object according to the second direction.
In some optional embodiments, the image acquisition device further comprises an infrared light source; the camera is an infrared camera, the collected object is a vein or a palm vein, and the first image information is image information formed by the collected object under the irradiation of the infrared light source. The technical scheme has the advantages that the vein image of the collected object can be obtained by arranging the infrared light source and the infrared camera, on one hand, the vein is difficult to copy and forge and has high reliability compared with the fingerprint, the iris and the hand shape; on one hand, the collected object can not contact the image collecting device, and is suitable for public occasions; on the other hand, the image acquisition can be completed only by stretching out the palm or the fingers, so that the user can conveniently accept the image acquisition.
In some alternative embodiments, the display device is a projection device; the first display screen is a projection screen. The technical scheme has the advantages that by the aid of the projection device, contents in the first display picture can be clearly displayed, and user experience is improved.
In some alternative embodiments, the display device is a holographic projection device; the first display picture is a holographic projection picture. The technical scheme has the advantages that the holographic projection reappeared image is strong in stereoscopic impression, has a real visual effect, and is better in use experience of a user.
In a second aspect, the present application provides an image capturing apparatus, where the image capturing apparatus is applied to an image capturing device, where the image capturing device includes a camera and a display device, the image capturing apparatus includes: the image receiving module is used for receiving first image information of the acquired object, which is sent by the camera; the image detection module is used for detecting whether the first image information meets a preset condition; the direction determining module is used for acquiring a first distance between the acquired object and the camera if the first image information does not meet the preset condition; acquiring a reference distance range; determining a first direction according to the first distance and the reference distance range, wherein the first direction is used for indicating a first moving direction of the acquired object; and the instruction generating module is used for generating a first control instruction according to the first direction and sending the first control instruction to the display device so that the display device generates a first display picture according to the first control instruction, wherein the first display picture is used for displaying the first direction.
In some optional embodiments, the image capturing apparatus further comprises: the first identification acquisition module is used for acquiring the identification information of the acquired object if the first image information meets the preset condition; and the image storage module is used for storing the first image information and the identification information of the acquired object in a correlation manner.
In some optional embodiments, the direction determining module comprises: the position acquisition unit is used for acquiring the position information of the acquired object according to the first image information; the distance acquisition unit is used for acquiring a first distance between the acquired object and the camera according to the position information of the acquired object; or, the direction determining module is configured to receive a first distance between the acquired object and the camera, which is sent by the distance sensor.
In some optional embodiments, the direction determining module further comprises: a distance detection unit for detecting whether the first distance is within the reference distance range; a direction obtaining unit configured to determine that the first direction is a direction approaching the camera if the first distance is greater than a maximum value of the reference distance range; determining that the first direction is a direction away from the camera if the first distance is less than the minimum of the reference distance range.
In some optional embodiments, the image capturing apparatus further includes a second identifier obtaining module, configured to obtain identifier information of the captured object and identifier information of the camera; the instruction generating module is further configured to generate the first control instruction according to the first direction, the identification information of the acquired object, and the identification information of the camera, and the first display screen is further configured to display the identification information of the acquired object and the identification information of the camera.
In some optional embodiments, the image receiving module is further configured to receive second image information of the acquired object sent by the camera; the image detection module is further used for detecting whether the second image information meets the preset condition; the direction determining module is further configured to obtain a second distance between the acquired object and the camera if the second image information does not satisfy the predetermined condition; determining a second direction according to the second distance and the reference distance range, wherein the second direction is used for indicating a second moving direction of the acquired object; the instruction generation module is further used for detecting whether the directions of the first direction and the second direction are the same or approximately the same; and if not, generating a second control instruction according to the second direction, and sending the second control instruction to the display device so that the display device generates a second display picture according to the second control instruction, wherein the second display picture is used for displaying the second direction.
In some optional embodiments, the image acquisition device further comprises an infrared light source; the camera is an infrared camera, the collected object is a vein or a palm vein, and the first image information is image information formed by the collected object under the irradiation of the infrared light source.
In some alternative embodiments, the display device is a projection device; the first display screen is a projection screen.
In some alternative embodiments, the display device is a holographic projection device; the first display picture is a holographic projection picture.
In a third aspect, the present application provides an image capturing apparatus comprising a memory, a processor, a camera and a display device, the memory storing a computer program, the processor implementing the steps of any of the above methods when executing the computer program.
In some optional embodiments, the image acquisition device further comprises an infrared light source; the camera is an infrared camera, the collected object is a vein or a palm vein, and the first image information is image information formed by the collected object under the irradiation of the infrared light source. The technical scheme has the advantages that the vein image of the collected object can be obtained by arranging the infrared light source and the infrared camera, on one hand, the vein is difficult to copy and forge and has high reliability compared with the fingerprint, the iris and the hand shape; on one hand, the collected object can not contact the image collecting device, and is suitable for public occasions; on the other hand, the image acquisition can be completed only by stretching out the palm or the fingers, so that the user can conveniently accept the image acquisition.
In some optional embodiments, the image capturing apparatus further comprises an optical filter disposed between the camera and the captured object. The beneficial effects of this technical scheme lie in, through setting up the light filter, can get rid of the influence of visible light, promote the quality of the image that the camera was gathered.
In some optional embodiments, the working wavelength range of the optical filter comprises 700-1000 nm. The technical scheme has the beneficial effects that the working wavelength range of the optical filter can include 700-1000 nm, near infrared light with the wavelength range of 700-1000 nm can be allowed to penetrate, light with other wavelengths is cut off, optical noise can be inhibited, optical signals are strengthened, and the accuracy and efficiency of image acquisition are improved.
In some alternative embodiments, the display device is a holographic projection device. The technical scheme has the advantages that the holographic projection reappeared image is strong in stereoscopic impression, has a real visual effect, and is better in use experience of a user.
In a fourth aspect, the present application provides a computer-readable storage medium storing a computer program which, when executed by a processor, implements the steps of any of the methods described above.
Drawings
The present application is further described below with reference to the drawings and examples.
Fig. 1 is a schematic flowchart of an image acquisition method according to an embodiment of the present application;
fig. 2 is a schematic flowchart of acquiring a first distance according to an embodiment of the present disclosure;
fig. 3 is a schematic flowchart of determining a first direction according to an embodiment of the present application;
fig. 4 is a schematic flowchart of an image capturing method according to an embodiment of the present disclosure;
fig. 5 is a schematic flowchart of an image capturing method according to an embodiment of the present disclosure;
fig. 6 is a schematic flowchart of an image capturing method according to an embodiment of the present disclosure;
fig. 7 is a schematic flowchart of obtaining a second distance according to an embodiment of the present application;
fig. 8 is a schematic flowchart of an image capturing method according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of an image capturing device according to an embodiment of the present disclosure;
fig. 10 is a schematic structural diagram of an image capturing device according to an embodiment of the present application;
fig. 11 is a schematic structural diagram of a direction determination module according to an embodiment of the present application;
fig. 12 is a schematic structural diagram of a direction determination module according to an embodiment of the present application;
fig. 13 is a schematic structural diagram of an image capturing device according to an embodiment of the present disclosure;
fig. 14 is a block diagram of an image capturing device according to an embodiment of the present disclosure;
fig. 15 is a schematic structural diagram of an image capturing device according to an embodiment of the present application;
fig. 16 is a schematic structural diagram of an image capturing device according to an embodiment of the present application;
fig. 17 is a schematic structural diagram of a program product for implementing an image acquisition method according to an embodiment of the present application.
Detailed Description
The present application is further described with reference to the accompanying drawings and the detailed description, and it should be noted that, in the present application, the embodiments or technical features described below may be arbitrarily combined to form a new embodiment without conflict.
Referring to fig. 1, an embodiment of the present application provides an image capturing method, which may be applied to an image capturing apparatus, where the image capturing apparatus may include a camera and a display device, and the method may include steps S101 to S106.
Step S101: and receiving first image information of the acquired object sent by the camera. Specifically, the camera may be an infrared camera, the collected object may be a vein or a palm vein, and the first image information may be image information of the vein or the palm vein.
Step S102: detecting whether the first image information satisfies a predetermined condition. In particular, the predetermined condition may be that the image information from which the unique captured object can be identified is clear and complete.
Step S103: and if the first image information does not meet the preset condition, acquiring a first distance between the acquired object and the camera.
In a specific embodiment, referring to fig. 2, the step S103 may include steps S201 to S202.
Step S201: and acquiring the position information of the acquired object according to the first image information.
Step S202: and acquiring a first distance between the acquired object and the camera according to the position information of the acquired object.
In a specific embodiment, the step S103 may further include: and receiving a first distance between the collected object and the camera, which is sent by a distance sensor.
In the steps of the embodiment of the application, the first distance can be calculated according to the first image information, the first distance can also be directly obtained by receiving data sent by the distance sensor, and whether the position of the acquired object meets the preset condition of image acquisition can be judged through the acquired first distance.
Step S104: a reference distance range is obtained. Specifically, the reference distance range may be a point value, such as 10cm, and the reference distance range may also be a range value, such as 10-20 cm.
Step S105: and determining a first direction according to the first distance and the reference distance range, wherein the first direction is used for indicating a first moving direction of the acquired object. Specifically, the first direction may be used to indicate a direction in which the captured object approaches the camera, and may also be used to indicate a direction in which the captured object moves away from the camera.
In a specific embodiment, referring to fig. 3, the step S105 may include steps S301 to S303.
Step S301: detecting whether the first distance is in the reference distance range. When the first distance is in the reference distance range, the first image information may satisfy the predetermined condition. Specifically, the first distance being in the reference distance range may be the first distance being equal to a point value of the reference distance range, or the first distance being within a range value of the reference distance range.
Step S302: determining that the first direction is a direction approaching the camera if the first distance is greater than a maximum value of the reference distance range.
Step S303: determining that the first direction is a direction away from the camera if the first distance is less than the minimum of the reference distance range.
In the steps of the embodiment of the application, the first direction can be determined by comparing the first distance with the reference distance range, and then the adjustment mode of the position of the acquired object can be determined, so that image acquisition is completed.
Step S106: and generating a first control instruction according to the first direction, and sending the first control instruction to the display device so that the display device generates a first display picture according to the first control instruction, wherein the first display picture is used for displaying the first direction. Through sending first control command to display device, display device can generate first display screen in order to show first direction, has promoted visual degree, the user operation of being convenient for.
According to the method, the display device is arranged, and the display device can display the first direction, so that the collected object is prompted to adjust the position according to the first direction, and image collection is completed. In the whole image acquisition process, the acquired object can not contact the image acquisition equipment, so that the propagation risk of viruses and bacteria is reduced, and the method is safe and reliable.
Referring to fig. 4, an embodiment of the present application further provides an image capturing method, which may include steps S101 to S108.
Step S107: and if the first image information meets the preset condition, acquiring the identification information of the acquired object. Specifically, the identification information may be a name or a number of the captured object, such as the palm 001, and each identification information may correspond to a unique captured object.
Step S108: and storing the first image information and the identification information of the acquired object in a correlation manner.
According to the method, the first image information and the identification information of the acquired object are stored in a correlation mode, the identification information of the acquired object and the acquired image information are input, and the method can be subsequently used for functions of identity recognition and the like and is convenient to manage.
Referring to fig. 5, an embodiment of the present application further provides an image acquisition method, which may include steps S101 to S106, and S109.
Step S109: and acquiring the identification information of the acquired object and the identification information of the camera. Specifically, the identification information may be text information, such as "palm" and "camera", and the identification information may also be graphic information, such as a model diagram or a physical diagram of the palm, a model diagram or a physical diagram of the camera.
In a specific embodiment, the step S106 may further include: and generating the first control instruction according to the first direction, the identification information of the acquired object and the identification information of the camera, wherein the first display picture is also used for displaying the identification information of the acquired object and the identification information of the camera. Through the identification information of the collected object and the identification information of the camera displayed in the first display picture, the position relation between the collected object and the camera can be displayed more clearly and visually, and the user operation is facilitated.
Referring to fig. 6, an embodiment of the present application further provides an image capturing method, which may include steps S101 to S106 and S110 to S117.
Step S110: and receiving second image information of the acquired object sent by the camera. The camera can continuously send the image information of the collected object at regular intervals, and the second image information of the collected object sent by the camera can be received when the position of the collected object moves. Specifically, the camera may be an infrared camera, and the collected object may be a vein or a palm vein.
Step S111: detecting whether the second image information satisfies the predetermined condition. In particular, the predetermined condition may be that the image information from which the unique captured object can be identified is clear and complete.
Step S112: and if the second image information meets the preset condition, acquiring the identification information of the acquired object. Specifically, the identification information may be a number of the acquired object, and each identification information may correspond to a unique acquired object.
Step S113: and storing the second image information in association with the identification information of the acquired object. The second image information and the identification information of the collected object are stored in a correlation mode, and the corresponding second image information can be checked by inputting the identification information of the collected object, so that the management is facilitated.
Step S114: and if the second image information does not meet the preset condition, acquiring a second distance between the acquired object and the camera.
In a specific embodiment, referring to fig. 7, the step S114 may include steps S401 to S402.
Step S401: and acquiring the position information of the acquired object according to the second image information.
Step S402: and acquiring a second distance between the acquired object and the camera according to the position information of the acquired object.
In a specific embodiment, the step S114 may further include: and receiving a second distance between the acquired object and the camera, which is sent by the distance sensor.
In the foregoing steps of the embodiment of the present application, it can be determined whether the position of the acquired object meets the predetermined condition of image acquisition according to the second distance.
Step S115: and determining a second direction according to the second distance and the reference distance range, wherein the second direction is used for indicating a second moving direction of the acquired object. Specifically, the reference distance range may be a point value, such as 10cm, and the reference distance range may also be a range value, such as 10-20 cm. The second direction can be used for indicating the direction of the collected object approaching the camera and can also be used for indicating the direction of the collected object far away from the camera.
Step S116: detecting whether the directions of the first direction and the second direction are the same or approximately the same. Specifically, the screen displayed by the display device may remain unchanged when the second direction is the same as or approximately the same as the first direction; the second direction is different from and not approximately the same as the first direction, and the image displayed by the display device needs to be adjusted to the second direction.
Step S117: and if not, generating a second control instruction according to the second direction, and sending the second control instruction to the display device so that the display device generates a second display picture according to the second control instruction, wherein the second display picture is used for displaying the second direction.
According to the method in the embodiment of the application, whether the position of the acquired object meets the preset condition of image acquisition can be judged according to the second distance; by comparing the second direction with the first direction, if the directions of the second direction and the first direction are different and not approximately the same, the display device can generate a second display picture, display the position relation between the collected object and the camera, and facilitate the user to adjust the position of the collected object according to the second direction.
For example, the camera is an infrared camera, the collected object is a palm vein, the reference distance range is 5-10 cm, and the first distance is 15 cm, the first direction prompted by the first picture is a direction indicating that the user brings the palm vein close to the infrared camera; after the user moves the palm vein, if the second distance is 12 centimeters, the first picture is kept unchanged, and if the second distance is 3 centimeters, the second direction prompted by the second picture is a direction indicating that the user moves the palm vein away from the infrared camera.
Referring to fig. 8, an embodiment of the present application further provides an image capturing method, which may include steps S501 to S510.
Step S501: and starting.
Step S502: the LED emits near infrared light. In particular, the LEDs may be infrared LEDs.
Step S503: vein image information of an acquired object is acquired. Specifically, the collected object may be a palm vein or a finger vein.
Step S504: position information of the acquired object is acquired.
Step S505: the projection generates a first picture that may show the distance and positional relationship between the acquired object and the acquisition device. Specifically, the acquisition device may be a camera, the first screen may be a holographic projection screen, and the content of the first screen may include a model image or a real image of the acquired object, and a model image or a real image of the camera.
Step S506: and detecting whether the vein image information meets a preset condition. Specifically, the predetermined condition may be that the vein image is clear and complete, and a unique captured object may be identified from the vein image information.
Step S507: and if the vein image information meets the preset condition, storing the vein image.
Step S508: and (6) ending.
Step S509: and if the vein image information does not meet the preset condition, projecting to generate a second picture, wherein the second picture displays the first direction. In particular, the second picture may be a holographic projection picture, the first direction may be a direction in which the acquired object is close to the acquisition device, and the first direction may also be a direction in which the acquired object is far from the acquisition device. When the object moves in the first direction, the vein image information of the object approaches a predetermined condition.
Step S510: and moving the collected object according to the first direction, and executing the step S503. When the collected object moves along the first direction, the vein image information of the collected object can be acquired again, and whether the vein image meets the preset condition or not can be judged.
According to the method, on one hand, the reference position is provided through the holographic projection technology, the stereoscopic impression of the image reproduced by the holographic projection is strong, the real visual effect is achieved, and the use experience of a user is improved; on one hand, the user can be prompted to adjust the hand position by combining a voice prompt or virtual character interaction mode, and the use experience of the user is further improved; on the other hand, the non-contact vein image acquisition can be realized, the propagation risk of viruses and bacteria is reduced, and the method is safe and reliable.
In some optional embodiments, the image acquisition device may further comprise an infrared light source; in a specific embodiment, the camera may be an infrared camera, the collected object may be a vein or a palm vein, and the first and second image information may be image information formed by the collected object under irradiation of the infrared light source. By arranging the infrared light source and the infrared camera, vein images of the collected object can be obtained, and on one hand, the veins are difficult to copy and forge and have high reliability compared with fingerprints, irises and hand shapes; on one hand, the collected object can not contact the image collecting device, and is suitable for public occasions; on the other hand, the image acquisition can be completed only by stretching out the palm or the fingers, so that the user can conveniently accept the image acquisition.
In some alternative embodiments, the display device may be a projection device; the first and second display screens may be projection screens. In a specific embodiment, the display device may be a holographic projection device, and the first and second display screens may be holographic projection screens. By arranging the projection device, the contents in the first display picture and the second display picture can be displayed clearly, and the use experience of a user is improved. Furthermore, the image reproduced by holographic projection has strong stereoscopic impression, real visual effect and better use experience for users.
Referring to fig. 9, an embodiment of the present application provides an image capturing apparatus, and a specific implementation manner of the image capturing apparatus is consistent with the implementation manner and the achieved technical effect described in the embodiment of the foregoing method, and details are not repeated.
The image capturing apparatus may be applied to the image capturing device, the image capturing device may include a camera and a display device, and the image capturing apparatus may include: the image receiving module 101 may be configured to receive first image information of an acquired object sent by the camera; an image detection module 102, configured to detect whether the first image information satisfies a predetermined condition; the direction determining module 103 may be configured to obtain a first distance between the acquired object and the camera if the first image information does not satisfy the predetermined condition; acquiring a reference distance range; determining a first direction according to the first distance and the reference distance range, wherein the first direction is used for indicating a first moving direction of the acquired object; the instruction generating module 104 may be configured to generate a first control instruction according to the first direction, and send the first control instruction to the display device, so that the display device generates a first display screen according to the first control instruction, where the first display screen is used for displaying the first direction.
Referring to fig. 10, in some optional embodiments, the image capturing apparatus may further include: a first identifier obtaining module 105, configured to obtain identifier information of the acquired object if the first image information satisfies the predetermined condition; an image storage module 106, configured to store the first image information in association with the identification information of the acquired object.
Referring to fig. 11, in some alternative embodiments, the direction determining module 103 may include: a position obtaining unit 1031 configured to obtain position information of the acquired object according to the first image information; a distance obtaining unit 1032, configured to obtain a first distance between the acquired object and the camera according to the position information of the acquired object.
In some optional embodiments, the direction determining module 103 may be further configured to receive a first distance between the captured object and the camera, which is sent by a distance sensor.
Referring to fig. 12, in some optional embodiments, the direction determining module 103 may further include: a distance detection unit 1033 operable to detect whether the first distance is in the reference distance range; a direction obtaining unit 1034 configured to determine that the first direction is a direction approaching the camera if the first distance is greater than the maximum value of the reference distance range; determining that the first direction is a direction away from the camera if the first distance is less than the minimum of the reference distance range.
Referring to fig. 13, in some optional embodiments, the image capturing apparatus may further include a second identifier obtaining module 107, which may be configured to obtain identifier information of the captured object and identifier information of the camera.
In a specific embodiment, the instruction generating module 104 may be further configured to generate the first control instruction according to the first direction, the identification information of the acquired object, and the identification information of the camera, and the first display screen may be further configured to display the identification information of the acquired object and the identification information of the camera.
In some optional embodiments, the image receiving module 101 may be further configured to receive second image information of the acquired object sent by the camera; the image detection module 102 may be further configured to detect whether the second image information satisfies the predetermined condition; the direction determining module 103 may be further configured to obtain a second distance between the acquired object and the camera if the second image information does not satisfy the predetermined condition; determining a second direction according to the second distance and the reference distance range, wherein the second direction is used for indicating a second moving direction of the acquired object; the instruction generation module 104 may be further configured to detect whether the directions of the first direction and the second direction are the same or approximately the same; and if not, generating a second control instruction according to the second direction, and sending the second control instruction to the display device so that the display device generates a second display picture according to the second control instruction, wherein the second display picture can be used for displaying the second direction.
In some optional embodiments, the image capturing apparatus may further include an infrared light source, the camera may be an infrared camera, the captured object may be a vein or a metacarpal vein, and the first and second image information may be image information formed by the captured object under irradiation of the infrared light source.
In some alternative embodiments, the display device may be a projection device; the first and second display screens may be projection screens. In a specific embodiment, the display device may be a holographic projection device, and the first and second display screens may be holographic projection screens.
Referring to fig. 14, an embodiment of the present application further provides an image capturing apparatus 200, where the image capturing apparatus 200 includes at least one memory 210, at least one processor 220, and a bus 230 connecting different platform systems. In a specific embodiment, the memory 210 may store a computer program, and the processor 220 may implement the steps of the image acquisition method in the embodiment of the present application when executing the computer program, where a specific implementation manner of the method is consistent with the implementation manner and the achieved technical effect described in the embodiment of the method, and some contents are not described again.
The memory 210 may include readable media in the form of volatile memory, such as Random Access Memory (RAM)211 and/or cache memory 212, and may further include Read Only Memory (ROM) 213.
The memory 210 further stores a computer program, and the computer program can be executed by the processor 220, so that the processor 220 executes the steps of the image capturing method in the embodiment of the present application. Memory 210 may also include a program/utility 214 having a set (at least one) of program modules 215, including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may comprise an implementation of a network environment.
Accordingly, processor 220 may execute the computer programs described above, as well as may execute programs/utilities 214.
The image capture device 200 may also communicate with one or more external devices 240, such as a keyboard, pointing device, bluetooth device, etc., and may also communicate with one or more devices capable of interacting with the image capture device 200, and/or with any device (e.g., router, modem, etc.) that enables the image capture device 200 to communicate with one or more other computing devices. Such communication may occur via an input/output (I/O) interface 250. Also, the image capture device 200 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the internet) via the network adapter 260. Network adapter 260 may communicate with other modules of image capture device 200 via bus 230. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in conjunction with image acquisition device 200, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID systems, tape drives, and data backup storage platforms, to name a few.
Referring to fig. 15 to 16, an embodiment of the present application further provides an image capturing apparatus 200, where the image capturing apparatus 200 may include a computing main board 203, a camera 201, and a holographic projection device 204, and the camera 201, the computing main board 203, and the holographic projection device 204 are connected in sequence. In an embodiment, the computing motherboard 203 may be provided with a memory (not shown) and a processor (not shown), which are connected to each other, and the processor may perform data interaction with the camera 201 and the holographic projection apparatus 204, respectively. Specifically, the camera 201 may acquire a first image 21 of the captured object 20 and send the first image information to the processor. On one hand, the processor can control the holographic projection device 204 to display the position relationship between the collected object 20 and the camera 201 according to the first image information, so that the adjustment by a user is facilitated; on the other hand, the image reproduced by holographic projection has strong stereoscopic impression and real visual effect, and can realize friendly man-machine interaction and improve the use experience of users.
In some optional embodiments, the image capturing apparatus may further include at least one infrared light source 205, specifically, the camera 201 may be the infrared camera 201, and the captured object 20 may refer to a vein or a metacarpal vein. By arranging the infrared light source 205 and the infrared camera 201, vein images of the collected object 20 can be obtained, on one hand, the veins are difficult to copy and forge and have high reliability compared with fingerprints, irises and hand shapes; on one hand, the collected object 20 can not contact with the image collecting device, and is suitable for public occasions; on the other hand, the image acquisition can be completed only by stretching out the palm or the fingers, so that the user can conveniently accept the image acquisition.
In a specific embodiment, the infrared light source 205 may be an infrared LED, which has a simple structure, a long lifetime, a high light rate, no radiation, low power consumption, and good directivity.
In a specific embodiment, the infrared light source 205 may be connected to a processor, and the processor may be configured to control the infrared light source 205 to emit infrared light that impinges on the object 20 to be captured. The processor can control the infrared light source 205 to emit or not to emit infrared light irradiating on the collected object 20, and the processor can also control the intensity of the infrared light emitted by the infrared light source 205, so that the degree of automation is high, and the operation is convenient.
In some alternative embodiments, the number of the infrared light sources 205 may be N, where N is a positive integer, and the N infrared light sources 205 may be respectively disposed around the camera 201. Specifically, the number of the infrared light sources 205 may be two, and the two infrared light sources 205 may be respectively disposed on the upper and lower sides of the camera 201. The infrared light source 205 can emit infrared light irradiated on the collected object 20, and can directly collect images under the influence of natural light without a darkroom environment, thereby improving the convenience of the device.
In some optional embodiments, the image capturing apparatus may further include an optical filter 202, and the optical filter 202 may be disposed between the camera 201 and the captured object 20, and is configured to filter visible light. By arranging the optical filter 202, the influence of visible light can be removed, and the quality of the vein image collected by the camera 201 is improved.
In one embodiment, the operating wavelength range of the filter 202 may include 700 to 1000 nm. Specifically, the operating wavelength of the optical filter 202 may be 850 nm. By setting the optical filter 202 with the working wavelength range of 700-1000 nm, near infrared light with the wavelength range of 700-1000 nm can be allowed to transmit, light with other wavelengths is cut off, optical noise can be inhibited, optical signals can be strengthened, and the accuracy and efficiency of image acquisition can be improved; further, the operating wavelength of the optical filter 202 is set to 850nm, which only allows the near-infrared wavelength with the wavelength of 850nm to pass through, and simultaneously cuts off the visible light wavelength, thereby further enhancing the infrared illumination characteristic and improving the accuracy and efficiency of image acquisition.
In some alternative embodiments, the holographic projection device 204 may be disposed behind the camera 201, and the image 22 of the holographic projection device may be perpendicular or approximately perpendicular to the direction of the optical axis of the lens of the camera 201. In particular, the image 22 of the holographic projection device may be a holographic projection image. The collected object 20 can be parallel or approximately parallel to the lens of the camera 201, the image 22 of the holographic projection device can be parallel or approximately parallel to the collected object 20, when the user collects the image, the image 22 of the holographic projection device can fall into the central view of the user, the user can observe the front of the image 22 of the holographic projection device without turning the head, and the use experience of the user is improved.
In some alternative embodiments, the holographic projection device 204 may be disposed on one side of the camera 201, and the image 22 of the holographic projection device may be parallel or approximately parallel to the direction of the optical axis of the lens of the camera 201. In particular, the image 22 of the holographic projection device may be a holographic projection image. The collected object 20 can be parallel or approximately parallel to the lens of the camera 201, the image 22 of the holographic projection device can be perpendicular or approximately perpendicular to the collected object 20, and when the user collects the image, the user can observe the information of the image 22 of the holographic projection device in the direction parallel to the collected object 20, so that the user can conveniently operate according to the information of the holographic projection image.
The embodiment of the present application further provides a computer-readable storage medium, where the computer-readable storage medium is used for storing a computer program, and when the computer program is executed, the steps of the image acquisition method in the embodiment of the present application are implemented, and a specific implementation manner of the method is consistent with the implementation manner and the achieved technical effect described in the embodiment of the foregoing method, and some contents are not described again. Fig. 17 shows a program product 300 provided by the present embodiment for implementing the method, which may employ a portable compact disc read only memory (CD-ROM) and include program codes, and may be run on a terminal device, such as a personal computer. However, the program product 300 of the present invention is not so limited, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. Program product 300 may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
A computer readable storage medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable storage medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a readable storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing. Program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., through the internet using an internet service provider).
The foregoing description and drawings are only for purposes of illustrating the preferred embodiments of the present application and are not intended to limit the present application, which is, therefore, to the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present application.
Claims (23)
1. An image acquisition method is applied to image acquisition equipment, wherein the image acquisition equipment comprises a camera and a display device, and the method comprises the following steps:
receiving first image information of an acquired object sent by the camera;
detecting whether the first image information meets a predetermined condition;
if the first image information does not meet the preset condition, acquiring a first distance between the acquired object and the camera;
acquiring a reference distance range;
determining a first direction according to the first distance and the reference distance range, wherein the first direction is used for indicating a first moving direction of the acquired object;
and generating a first control instruction according to the first direction, and sending the first control instruction to the display device so that the display device generates a first display picture according to the first control instruction, wherein the first display picture is used for displaying the first direction.
2. The image acquisition method according to claim 1, characterized in that the method further comprises:
if the first image information meets the preset condition, acquiring identification information of the acquired object;
and storing the first image information and the identification information of the acquired object in a correlation manner.
3. The image capturing method according to claim 1, wherein the acquiring a first distance between the captured object and the camera includes:
acquiring position information of the acquired object according to the first image information;
acquiring a first distance between the acquired object and the camera according to the position information of the acquired object; alternatively, the first and second electrodes may be,
the acquiring a first distance between the acquired object and the camera comprises:
and receiving a first distance between the collected object and the camera, which is sent by a distance sensor.
4. The image acquisition method according to claim 1, wherein said determining a first direction from said first distance and said reference distance range comprises:
detecting whether the first distance is in the reference distance range;
determining that the first direction is a direction approaching the camera if the first distance is greater than the maximum value of the reference distance range;
determining that the first direction is a direction away from the camera if the first distance is less than the minimum of the reference distance range.
5. The image acquisition method according to claim 1, characterized in that the method further comprises:
acquiring identification information of the acquired object and identification information of the camera;
the generating a first control instruction according to the first direction includes:
and generating the first control instruction according to the first direction, the identification information of the acquired object and the identification information of the camera, wherein the first display picture is also used for displaying the identification information of the acquired object and the identification information of the camera.
6. The image acquisition method according to claim 1, characterized in that the method further comprises:
receiving second image information of the acquired object sent by the camera;
detecting whether the second image information satisfies the predetermined condition;
if the second image information does not meet the preset condition, acquiring a second distance between the acquired object and the camera;
determining a second direction according to the second distance and the reference distance range, wherein the second direction is used for indicating a second moving direction of the acquired object;
detecting whether the directions of the first direction and the second direction are the same or approximately the same;
and if not, generating a second control instruction according to the second direction, and sending the second control instruction to the display device so that the display device generates a second display picture according to the second control instruction, wherein the second display picture is used for displaying the second direction.
7. The image capturing method of claim 1, wherein the image capturing device further comprises an infrared light source;
the camera is an infrared camera, the collected object is a vein or a palm vein, and the first image information is image information formed by the collected object under the irradiation of the infrared light source.
8. The image acquisition method according to claim 1, wherein the display device is a projection device;
the first display screen is a projection screen.
9. The image acquisition method according to claim 8, wherein the display device is a holographic projection device;
the first display picture is a holographic projection picture.
10. An image acquisition device, characterized in that, be applied to the image acquisition equipment, the image acquisition equipment includes camera and display device, the image acquisition device includes:
the image receiving module is used for receiving first image information of the acquired object, which is sent by the camera;
the image detection module is used for detecting whether the first image information meets a preset condition;
the direction determining module is used for acquiring a first distance between the acquired object and the camera if the first image information does not meet the preset condition; acquiring a reference distance range; determining a first direction according to the first distance and the reference distance range, wherein the first direction is used for indicating a first moving direction of the acquired object;
and the instruction generating module is used for generating a first control instruction according to the first direction and sending the first control instruction to the display device so that the display device generates a first display picture according to the first control instruction, wherein the first display picture is used for displaying the first direction.
11. The image capturing device of claim 10, further comprising:
the first identification acquisition module is used for acquiring the identification information of the acquired object if the first image information meets the preset condition;
and the image storage module is used for storing the first image information and the identification information of the acquired object in a correlation manner.
12. The image acquisition apparatus according to claim 10, wherein the direction determination module comprises:
a distance detection unit for detecting whether the first distance is within the reference distance range;
a direction obtaining unit configured to determine that the first direction is a direction approaching the camera if the first distance is greater than a maximum value of the reference distance range; determining that the first direction is a direction away from the camera if the first distance is less than the minimum of the reference distance range.
13. The image acquisition apparatus according to claim 10, further comprising a second identification acquisition module configured to acquire identification information of the acquired object and identification information of the camera;
the instruction generating module is further configured to generate the first control instruction according to the first direction, the identification information of the acquired object, and the identification information of the camera, and the first display screen is further configured to display the identification information of the acquired object and the identification information of the camera.
14. The image acquisition device according to claim 10, wherein the image receiving module is further configured to receive second image information of the acquired object sent by the camera;
the image detection module is further used for detecting whether the second image information meets the preset condition;
the direction determining module is further used for acquiring a second distance between the acquired object and the camera if the direction is not satisfied; determining a second direction according to the second distance and the reference distance range, wherein the second direction is used for indicating a second moving direction of the acquired object;
the instruction generation module is further used for detecting whether the directions of the first direction and the second direction are the same or approximately the same; and if not, generating a second control instruction according to the second direction, and sending the second control instruction to the display device so that the display device generates a second display picture according to the second control instruction, wherein the second display picture is used for displaying the second direction.
15. The image capturing apparatus of claim 10, wherein the image capturing device further comprises an infrared light source;
the camera is an infrared camera, the collected object is a vein or a palm vein, and the first image information is image information formed by the collected object under the irradiation of the infrared light source.
16. The image capture device of claim 10, wherein the display device is a projection device;
the first display screen is a projection screen.
17. The image acquisition device of claim 16, wherein the display device is a holographic projection device;
the first display picture is a holographic projection picture.
18. An image acquisition apparatus, characterized in that the image acquisition apparatus comprises a memory, a processor, a camera and a display device, the memory storing a computer program, the processor implementing the steps of the method according to any one of claims 1-9 when executing the computer program.
19. The image capturing device of claim 18, wherein the image capturing device further comprises an infrared light source;
the camera is an infrared camera, the collected object is a vein or a palm vein, and the first image information is image information formed by the collected object under the irradiation of the infrared light source.
20. The image capturing apparatus of claim 19, further comprising a filter disposed between the camera and the captured object.
21. The image capturing device as claimed in claim 20, wherein the operating wavelength range of the filter includes 700 nm to 1000 nm.
22. The image acquisition apparatus of claim 18, wherein the display device is a holographic projection device.
23. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 9.
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