CN107392174B - Method and device for closing palm image recognition device - Google Patents
Method and device for closing palm image recognition device Download PDFInfo
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- CN107392174B CN107392174B CN201710661218.5A CN201710661218A CN107392174B CN 107392174 B CN107392174 B CN 107392174B CN 201710661218 A CN201710661218 A CN 201710661218A CN 107392174 B CN107392174 B CN 107392174B
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- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
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- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
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Abstract
The invention discloses a method for closing a palm image recognition device, which comprises the following steps: comparing the current image of the acquired image acquisition area with the previous image; if the similarity between the current image and the previous image is lower than a preset first index, turning off a light supplement lamp; detecting whether an object exists in the image acquisition area through detection light; and if the image acquisition area does not have the object, closing the palm image recognition device. The technical problem that whether the palm exits an image acquisition area or not is difficult to determine through detection light under the common influence of a light supplement lamp and strong ambient light, so that the palm image recognition device is turned off by mistake or an image sensor acquires a palm image all the time is solved.
Description
Technical Field
The invention relates to the technical field of biological recognition, in particular to a method and a device for closing a palm image recognition device.
Background
The biometric identification technology is to closely combine a computer with high-tech means such as optics, acoustics, biosensors and the principle of biometrics, and identify the identity of a person by utilizing the inherent physiological characteristics (such as fingerprints, facial images, irises and the like) and behavior characteristics (such as handwriting, voice, gait and the like) of the person. In the field of biometric identification technology, palm identification is increasingly used. In general, the palm recognition uses a near-infrared LED lamp for supplementary lighting, and an image of the palm is acquired by an image sensor (cmos sensor), and then transmitted to a processor at the rear end for processing and recognition comparison.
When the palm image recognition device is in the course of the work, the light filling lamp is opened always and is kept the light filling state, and image sensor constantly acquires the palm image simultaneously, can constantly survey the palm through the detecting light and whether withdraw from the image acquisition region, when detecting that the palm has withdrawn from the image acquisition region, then close palm image recognition device.
However, when the palm image recognition device is operated in an environment with strong light, such as outdoors with strong sunlight, due to the fact that the detection light intensity is not large enough, it is difficult to determine whether the palm exits the image acquisition area through the detection light under the common influence of the fill-in light and the strong ambient light, and therefore technical problems that the palm image recognition device is turned off by mistake or the image sensor always acquires a palm image can be caused.
Disclosure of Invention
The invention provides a method for closing a palm image recognition device, which solves the technical problems that the palm image recognition device is difficult to determine whether a palm exits an image acquisition area through detection light under the common influence of a light supplement lamp and strong ambient light, so that the palm image recognition device is closed by mistake or an image sensor always acquires a palm image.
The invention provides a method for closing a palm image recognition device, which comprises the following steps:
comparing the current image of the acquired image acquisition area with the previous image;
if the similarity between the current image and the previous image is lower than a preset first index, turning off a light supplement lamp;
detecting whether an object exists in the image acquisition area through detection light;
and if the image acquisition area does not have the object, closing the palm image recognition device.
Preferably, the first and second electrodes are formed of a metal,
after detecting whether an object is present in the image capturing area by the detection light, the method further includes:
if the object exists in the image acquisition area, turning on a light supplement lamp and acquiring the latest image of the image acquisition area;
and carrying out palm image recognition on the latest image, and closing the palm image recognition device if the latest image does not have the preset basic characteristics of the palm image.
Preferably, the first and second electrodes are formed of a metal,
after comparing the current image of the acquired image acquisition area with the previous image, the method further comprises the following steps:
and if the similarity between the current image and the previous image is not lower than a preset first index, carrying out palm image recognition on the current image.
Preferably, the first and second electrodes are formed of a metal,
before comparing the current image of the acquired image acquisition area with the previous image, the method further comprises the following steps:
and acquiring images of the image acquisition area at fixed time.
The invention provides a device for closing a palm image recognition device, which comprises:
the comparison module is used for comparing the obtained current image of the image acquisition area with the previous image;
the light supplement lamp control module is used for turning off the light supplement lamp when the similarity between the current image and the previous image is lower than a preset first index;
the detection module is used for detecting whether an object exists in the image acquisition area through detection light;
and the closing module is used for closing the palm image recognition device when no object exists in the image acquisition area.
Preferably, the first and second electrodes are formed of a metal,
the device for closing the palm image recognition device further comprises a latest image acquisition module and a first recognition module;
the light supplement lamp control module is also used for turning on a light supplement lamp when an object exists in the image acquisition area;
the latest image acquisition module is used for acquiring the latest image of the image acquisition area;
the first identification module is used for carrying out palm image identification on the latest image;
the closing module is further used for closing the palm image recognition device when the latest image does not have the preset basic features of the palm image.
Preferably, the first and second electrodes are formed of a metal,
the device for closing the palm image recognition device further comprises a second recognition module, and the second recognition module is used for performing palm image recognition on the current image when the similarity between the current image and the previous image is not lower than a preset first index.
Preferably, the first and second electrodes are formed of a metal,
the device for closing the palm image recognition device further comprises a timing acquisition module for acquiring the image of the image acquisition area in a timing mode.
According to the technical scheme, the embodiment of the invention has the following advantages:
the method comprises the steps of comparing a current image with a previous image of an acquired image acquisition area, if the similarity between the current image and the previous image is lower than a preset first index, determining that the current image has sharp change relative to the first image, turning off a light supplement lamp, removing interference of the light supplement lamp on detection light, enabling the detection light to work normally under strong sunlight, detecting whether an object exists in the image acquisition area through the detection light, and turning off a palm image recognition device if the object does not exist in the image acquisition area.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic flowchart of a method for closing a palm image recognition device according to a first embodiment of the present invention;
fig. 2 is a flowchart illustrating a method for closing a palm image recognition device according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a first embodiment of an apparatus for closing a palm image recognition device according to the present invention;
fig. 4 is a schematic structural diagram of a device for closing a palm image recognition device according to a second embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a method for closing a palm image recognition device, which solves the technical problems that the palm image recognition device is closed by mistake or an image sensor always collects palm images because whether a palm exits an image collection area is difficult to determine by detecting light under the common influence of a light supplement lamp and strong ambient light.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.
Referring to fig. 1, a flowchart of a method for closing a palm image recognition device according to a first embodiment of the present invention is shown;
the invention provides a method for closing a palm image recognition device, which comprises the following steps:
and S101, comparing the acquired current image of the image acquisition area with the previous image.
In the normal operation of the palm image recognition device, the acquired images are all images when the palm is correctly placed, so that the previous image is always the image when the palm is correctly placed.
And S102, if the similarity between the current image and the previous image is lower than a preset first index, turning off the light supplement lamp.
The comparison between the current image and the previous image is roughly divided into three types.
First, the current image and the previous image are both images when the palm is correctly placed, and even if the current image and the previous image are not one palm image, the current image and the previous image have the basic features of the palm image, so that a certain similarity exists.
Second, the current image is the image corresponding to incorrect palm placement, e.g., the image corresponding to incorrect palm placement, while the previous image is the image when the palm was properly placed, and third, the current image is the image when the palm is away from the corresponding image, while the previous image is the image when the palm was properly placed.
In the second case and the third case, the similarity between the current image and the previous image is very low, so that whether the current image has a drastic change can be easily distinguished by comparing and judging the similarity between the current image and the previous image.
And S103, detecting whether an object exists in the image acquisition area by the detection light.
Therefore, the detection light can only detect whether an object exists, and cannot detect whether a palm exists.
And S104, if the image acquisition area does not have the object, closing the palm image recognition device.
Referring to fig. 2, a flowchart of a method for closing a palm image recognition device according to a second embodiment of the present invention is shown;
the invention provides a method for closing a palm image recognition device, which comprises the following steps:
s201, images of the image acquisition area are acquired at fixed time.
The time interval for acquiring the images can be adjusted according to actual needs, and can be set to be 5 seconds or 10 seconds, for example.
S202, comparing the obtained current image of the image acquisition area with the previous image.
And S203, if the similarity between the current image and the previous image is lower than a preset first index, turning off the light supplement lamp.
And S204, detecting whether an object exists in the image acquisition area by the detection light.
And S205, if the image acquisition area has no object, closing the palm image recognition device.
In this embodiment, S202, S203, S204, and S205 are the same as S101, S102, S103, and S104 in the first embodiment, respectively, and are not described herein again.
And S206, if the object exists in the image acquisition area, turning on the light supplement lamp and acquiring the latest image of the image acquisition area.
And S207, carrying out palm image recognition on the latest image, and closing the palm image recognition device if the latest image does not have the preset basic characteristics of the palm image.
The preset basic features refer to the basic features of the palm that the palm image should have in case the palm is correctly placed, for example, horizontally placed.
It should be noted that the current image may be an image in which the palm is placed askew, and the similarity is low compared to the previous image, so that it is not necessary to perform recognition, and the latest image may be an image in which the palm is placed correctly, so that it is necessary to perform recognition.
Although it is possible to recognize the current image from the beginning and determine whether or not the current image has the basic features of the palm image, this means that recognition is performed each time the palm image recognition device is turned off, the processing time is increased, and the load on the processor is increased. The method for closing the palm image recognition device provided by the invention can only recognize the current image which is violently changed compared with the previous image and the object exists in the image acquisition area, so that the method is more intelligent.
And S208, if the similarity between the current image and the previous image is not lower than a preset first index, carrying out palm image recognition on the current image.
The similarity between the current image and the previous image is not lower than a preset first index, and the palm image recognition is necessary if the current image and the image when the palm is correctly placed have great similarity.
Referring to fig. 3, a schematic structural diagram of a device for closing a palm image recognition device according to a first embodiment of the present invention is shown;
the invention provides a device for closing a palm image recognition device, which comprises:
a comparing module 301, configured to compare the obtained current image of the image acquisition area with a previous image.
And a fill light control module 302, configured to turn off the fill light when the similarity between the current image and the previous image is lower than a preset first index.
A detecting module 303, configured to detect whether an object exists in the image capturing area by the detection light.
And a closing module 304, configured to close the palm image recognition device when no object exists in the image capture area.
Referring to fig. 4, a schematic structural diagram of a device for closing a palm image recognition device according to a second embodiment of the present invention is shown;
the invention provides a device for closing a palm image recognition device, which comprises:
and a timing acquisition module 401, configured to acquire an image of the image acquisition area at a timing.
A comparing module 402, configured to compare the obtained current image of the image acquisition area with a previous image.
And a fill light control module 403, configured to turn off the fill light when the similarity between the current image and the previous image is lower than a preset first index.
A detection module 404 for detecting whether an object is present in the image acquisition area by the detection light.
A closing module 405, configured to close the palm image recognition device when no object exists in the image capture area.
The light supplement lamp control module 403 is further configured to turn on the light supplement lamp when an object exists in the image acquisition area.
A latest image acquisition module 406, configured to acquire a latest image of the image acquisition area.
The first recognition module 407 is configured to perform palm image recognition on the latest image.
And a closing module 405, configured to close the palm image recognition device when the latest image does not have the preset basic features of the palm image.
And the second identifying module 408 is configured to perform palm image identification on the current image when the similarity between the current image and the previous image is not lower than a preset first index.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A method of shutting down a palm image recognition device, comprising:
comparing the current image of the acquired image acquisition area with the previous image;
if the similarity between the current image and the previous image is lower than a preset first index, turning off a light supplement lamp;
detecting whether an object exists in the image acquisition area through detection light;
and if the image acquisition area does not have the object, closing the palm image recognition device.
2. The method for turning off the palm image recognition device according to claim 1, further comprising, after detecting whether an object is present in the image capture area by the detection light:
if the object exists in the image acquisition area, turning on a light supplement lamp and acquiring the latest image of the image acquisition area;
and carrying out palm image recognition on the latest image, and closing the palm image recognition device if the latest image does not have the preset basic characteristics of the palm image.
3. The method for turning off the palm image recognition device according to claim 1, further comprising, after comparing the obtained current image of the image capture area with the previous image:
and if the similarity between the current image and the previous image is not lower than a preset first index, carrying out palm image recognition on the current image.
4. The method for turning off the palm image recognition device according to claim 1, further comprising, before comparing the obtained current image of the image capture area with the previous image:
and acquiring images of the image acquisition area at fixed time.
5. An apparatus for turning off a palm image recognition apparatus, comprising:
the comparison module is used for comparing the obtained current image of the image acquisition area with the previous image;
the light supplement lamp control module is used for turning off the light supplement lamp when the similarity between the current image and the previous image is lower than a preset first index;
the detection module is used for detecting whether an object exists in the image acquisition area through detection light;
and the closing module is used for closing the palm image recognition device when no object exists in the image acquisition area.
6. The apparatus for turning off the palm image recognition device according to claim 5, further comprising a latest image acquisition module and a first recognition module;
the light supplement lamp control module is also used for turning on a light supplement lamp when an object exists in the image acquisition area;
the latest image acquisition module is used for acquiring the latest image of the image acquisition area;
the first identification module is used for carrying out palm image identification on the latest image;
the closing module is further used for closing the palm image recognition device when the latest image does not have the preset basic features of the palm image.
7. The device for turning off the palm image recognition device according to claim 5, further comprising a second recognition module for performing palm image recognition on the current image when the similarity between the current image and the previous image is not lower than a preset first index.
8. The device for turning off the palm image recognition device according to claim 5, further comprising a timing acquisition module for timing acquisition of the image capture area.
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| CN102711315A (en) * | 2012-04-16 | 2012-10-03 | 东莞光阵显示器制品有限公司 | Intelligent indoor illumination control method and system based on dynamic video identification |
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