CN111176454B - Terminal screen locking method combined with camera and storage medium - Google Patents
Terminal screen locking method combined with camera and storage medium Download PDFInfo
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- CN111176454B CN111176454B CN202010012031.4A CN202010012031A CN111176454B CN 111176454 B CN111176454 B CN 111176454B CN 202010012031 A CN202010012031 A CN 202010012031A CN 111176454 B CN111176454 B CN 111176454B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/017—Gesture based interaction, e.g. based on a set of recognized hand gestures
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/107—Static hand or arm
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/20—Movements or behaviour, e.g. gesture recognition
- G06V40/28—Recognition of hand or arm movements, e.g. recognition of deaf sign language
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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
Abstract
The invention provides a terminal screen locking method and a storage medium combined with a camera, wherein the method comprises the following steps: starting a flash lamp of the terminal, and setting a camera of the terminal to take pictures periodically; setting a mask layer on the uppermost layer of all applications of the terminal; intercepting all touch events of the terminal through the mask layer; when the finger characteristics of the camera are completely shielded by the fingers according to the shot images, the mask layer is reduced to a specified size; when the finger feature is not recognized, restoring the mask layer to the original shape. The invention can not only maintain the normal playing of the head-wearing equipment, but also effectively prevent the false touch; furthermore, the unlocking in the bag can be realized by directly utilizing the terminal flash lamp and the camera, and the bag unlocking device has the advantages of simple and convenient operation, wide applicability and low cost; furthermore, the terminal can be conveniently and accurately controlled in the dark to interact with the app; furthermore, the electric quantity of the terminal can be saved.
Description
Technical Field
The invention relates to the field of head-mounted equipment, in particular to a terminal screen locking method and a storage medium which are combined with a camera.
Background
More and more head-mounted devices support outputting terminal (mobile phone, tablet, etc.) pictures to the head-mounted devices for display. Based on the prior art, if the terminal is locked, the terminal cannot continuously output the picture to the head-mounted equipment. If the terminal does not lock the screen, the terminal is easy to touch by mistake, and particularly placed in a pocket; and when the terminal (such as a mobile phone) is placed in a pocket and the screen is locked, the terminal is difficult to operate, and the display of the head-mounted device cannot be controlled.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provided are a terminal screen locking method and a storage medium which are combined with a camera, and can maintain an output picture to a head-mounted device and operate a terminal in a dark.
In order to solve the technical problems, the invention adopts the technical scheme that:
a terminal screen locking method combined with a camera comprises the following steps:
starting a flash lamp of the terminal, and setting a camera of the terminal to take pictures periodically;
setting a mask layer on the uppermost layer of all applications of the terminal;
intercepting all touch events of the terminal through the mask layer;
when the finger characteristics of the camera are completely shielded by the fingers according to the shot images, the mask layer is reduced to a specified size;
when the finger feature is not recognized, restoring the mask layer to the original shape.
The invention provides another technical scheme as follows:
a computer-readable storage medium having stored thereon a computer program, which when executed by a processor, is capable of implementing the steps involved in a method for locking a screen of a terminal in combination with a camera as described above.
The invention has the beneficial effects that: the problem of false touch can be effectively solved through the shielding layer, the fact that the terminal does not lock a screen is ensured, and the head-mounted equipment can display the content of the terminal as usual; meanwhile, the in-bag unlocking can be realized by directly utilizing the terminal flash lamp and the camera, and the terminal is conveniently controlled in the dark (under the condition that eyes cannot look straight). The invention also has the advantages of easy implementation, low cost and the like.
Drawings
Fig. 1 is a schematic flow chart of a terminal screen locking method in combination with a camera according to an embodiment of the present invention;
fig. 2 is a schematic interface diagram of a screen of a head-mounted device during a dark operation process according to an embodiment of the present invention.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The most key concept of the invention is as follows: setting a mask layer to prevent error touch; and the unlocking in the bag can be realized by directly utilizing the terminal flash lamp and the camera, so that the interaction is facilitated.
Referring to fig. 1 and 2, the present invention provides a terminal screen locking method combined with a camera, including:
starting a flash lamp of the terminal, and setting a camera of the terminal to take pictures periodically;
setting a mask layer on the uppermost layer of all applications of the terminal;
intercepting all touch events of the terminal through the mask layer;
when the finger characteristics of the camera are completely shielded by the fingers according to the shot images, the mask layer is reduced to a specified size;
when the finger feature is not recognized, restoring the mask layer to the original shape.
From the above description, the beneficial effects of the present invention are: the mask layer is arranged to shield all touch events so as to effectively prevent accidental touch in the dark; the all flash lamps and the camera of direct utilization terminal unblock, improve the terminal suitability, and easy and simple to handle can realize the dark interaction.
Further, still include:
and adjusting the brightness of the terminal to be the lowest.
According to the description, the automatic dimming device has the function of automatically dimming the brightness, and effectively saves the electric quantity.
Further, the mask layer is a transparent mask layer.
According to the description, the state of the unlocked screen can be simulated, and the playing content of the terminal is more intuitive.
Further, the flash lamp of opening the terminal sets up the camera periodic shooting at the terminal, and before, still include:
starting a flash lamp of the terminal to obtain images of cameras completely shielded by different fingers;
and acquiring the finger characteristics according to the image.
As can be seen from the above description, the finger features are obtained in advance for efficient subsequent recognition.
Further, the acquiring of the image of the camera completely blocked by the different fingers specifically includes:
and starting the camera, and respectively obtaining continuous images of different fingers marked artificially from the beginning to the end of completely shielding the camera.
Further, according to the image, finger characteristics are acquired, specifically:
marking each frame of the continuous images of different fingers as a finger class;
and acquiring the finger characteristics according to the finger types.
According to the description, the finger characteristics are acquired according to the data acquired by corresponding to different fingers, so that the accuracy of the finger characteristics can be improved, the method can be suitable for different fingers in subsequent identification, and the operation convenience is improved.
Further, the obtaining of the finger characteristics according to the finger class further includes:
respectively acquiring other images shot by a camera under a dark environment formed by enclosing barriers of different colors;
marking each frame of the other images as other classes;
training the finger class and other classes through a convolutional neural network to obtain a classifier;
as can be seen from the above description, the interference term is obtained at the same time, and the classifier is obtained through deep learning, so that the recognition accuracy can be significantly improved, and the recognition result can be obtained more quickly.
Further, when the finger feature of the camera is completely shielded by the finger according to the shot image, the transparent mask layer is reduced to a specified size, specifically:
matching each frame of the image shot by the camera through the classifier;
if the frame number of the first designated percentage in the preset time length is matched with the finger class, the finger characteristic is judged to be recognized, and the transparent mask layer is shrunk to the designated size.
As can be seen from the above description, based on the classifier and the first specified percentage, the recognition result can be efficiently and accurately obtained, thereby increasing the unlocking speed.
Further, when the finger feature is not recognized, the mask layer is restored to the original shape, specifically:
and if the frame number of the second specified percentage in the preset time length is matched with other classes, judging that the finger characteristics are not identified, and setting the mask layer to fully cover the terminal screen again.
From the above description, it can be known that by setting the second specified percentage, proper fault tolerance is realized, and false touch is effectively avoided.
Further, the mask layer is shrunk to a specified size, and then the method further comprises the following steps:
and displaying the touch track and the current touch position on the terminal interface in the head-mounted equipment.
According to the description, the user can know the current touch position and operation, the interaction is convenient, and the control accuracy is improved.
Further, still include:
and displaying horizontal and vertical coordinates in opposite colors at the position of a frame corresponding to the terminal interface in the head-mounted equipment.
According to the description, the user can combine the frame coordinate prompt to more accurately control.
Further, displaying the touch trajectory using a reverse color; identifying the current touch location using a dot or cross center point.
According to the description, the touch track can be more prominently displayed, the current touch position can be accurately positioned, the control accuracy is ensured, and the control is more convenient.
The invention provides another technical scheme as follows:
a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, enables the following steps included in a terminal screen locking method in combination with a camera:
starting a flash lamp of the terminal, and setting a camera of the terminal to take pictures periodically;
setting a mask layer on the uppermost layer of all applications of the terminal;
intercepting all touch events of the terminal through the mask layer;
when the finger characteristics of the camera are completely shielded by the fingers according to the shot images, the mask layer is reduced to a specified size;
when the finger feature is not recognized, restoring the mask layer to the original shape.
Further, the mask layer is a transparent mask layer.
Further, still include:
and adjusting the brightness of the terminal to be the lowest.
Further, the flash lamp of opening the terminal sets up the camera periodic shooting at the terminal, and before, still include:
starting a flash lamp of the terminal to obtain images of cameras completely shielded by different fingers;
and acquiring the finger characteristics according to the image.
Further, the acquiring of the image of the camera completely blocked by the different fingers specifically includes:
and starting the camera, and respectively obtaining continuous images of different fingers marked artificially from the beginning to the end of completely shielding the camera.
Further, according to the image, finger characteristics are acquired, specifically:
marking each frame of the continuous images of different fingers as a finger class;
and acquiring the finger characteristics according to the finger types.
Further, the obtaining of the finger characteristics according to the finger class further includes:
respectively acquiring other images shot by a camera under a dark environment formed by enclosing barriers of different colors;
marking each frame of the other images as other classes;
and training the finger class and other classes through a convolutional neural network to obtain a classifier.
Further, when the finger feature of the camera is completely shielded by the finger according to the shot image, the transparent mask layer is reduced to a specified size, specifically:
matching each frame of the image shot by the camera through the classifier;
if the frame number of the first designated percentage in the preset time length is matched with the finger class, the finger characteristic is judged to be recognized, and the transparent mask layer is shrunk to the designated size.
Further, when the finger feature is not recognized, the mask layer is restored to the original shape, specifically:
and if the frame number of the second specified percentage in the preset time length is matched with other classes, judging that the finger characteristics are not identified, and setting the mask layer to fully cover the terminal screen again.
Further, the mask layer is shrunk to a specified size, and then the method further comprises the following steps:
and displaying the touch track and the current touch position on the terminal interface in the head-mounted equipment.
Further, still include:
and displaying horizontal and vertical coordinates in opposite colors at the position of a frame corresponding to the terminal interface in the head-mounted equipment.
Further, displaying the touch trajectory using a reverse color; identifying the current touch location using a dot or cross center point.
As can be understood from the above description, those skilled in the art can understand that all or part of the processes in the above technical solutions can be implemented by instructing related hardware through a computer program, where the program can be stored in a computer-readable storage medium, and when executed, the program can include the processes of the above methods. After the flow is executed, the beneficial effects of the corresponding method can still be obtained.
The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
Example one
Referring to fig. 1 and fig. 2, the present embodiment provides a method for locking a screen of a terminal in combination with a camera, so that when the terminal is stored, normal playing or display of the screen content of the terminal by a headset can still be ensured, and dark operation and control can also be realized.
The method comprises the following steps:
firstly, after a mask layer is started (displayed) on the top layer of all applications of the terminal, a flash lamp of the terminal is started, and meanwhile, a camera of the terminal is set to take pictures periodically.
After the mask layer is activated, all touch events of the terminal will be intercepted by the mask layer.
Due to the arrangement of the shielding layer, the terminal can still play the original app content, the head-mounted device connected with the terminal can still normally play the terminal display content, and the terminal cannot be touched to achieve a pseudo screen locking effect. The intercepting mode may be intercepting all touch events and not transferring to the upper layer application for processing.
Preferably, after the transparent mask layer is opened, the brightness of the terminal is automatically adjusted to be the lowest, so as to save electric quantity. The display brightness of the head-mounted equipment can be independently controlled through the brightness adjusting button arranged on the head-mounted equipment, so that the display effect of the head-mounted equipment cannot be influenced.
Through the operation, even if the terminal is accomodate in the pocket, in the package or other dark places, still can guarantee the normal broadcast of head-mounted device, and solved the mistake and touched the terminal display screen and influence the problem of broadcast.
Alternatively, the mask layer may be a transparent mask layer, or may be a customized interface pattern. The present embodiment is described with reference to a transparent mask layer.
The transparent mask layer has a substantially different background mask effect from the background mask effect of the current browser when the current webpage pops up (e.g., pops up a confirmation form). The application is a cross-application transparent mask implemented for native android applications, rather than for browser web pages.
When the user has the requirement of controlling the terminal application, the user cannot watch the terminal screen through eyes and control the terminal screen by wearing the head-mounted device. The embodiment provides a function of controlling the terminal in the dark, so that a user can control the terminal even in the dark without detaching the head-mounted device, and the function of interacting the terminal and the head-mounted device is realized.
Specifically, when the finger feature of the camera is completely shielded by the finger according to the image shot by the camera, the mask layer is reduced to a specified size. At this time, the thread of the transparent mask layer is not recycled by the system, but is in a 'dormant' state, so that the realization of 'screen locking' again can be ensured. After the mask layer is reduced, all touch instructions controlled by the user on the terminal application are not intercepted any more, but are transmitted to the upper layer application for analysis processing as usual.
Wherein, the mode of realizing "the finger that the finger sheltered from the camera completely according to the image recognition that shoots" is:
firstly, early preparation work:
1.1 the flash lamp of the terminal is started, and the images of different fingers completely shielding the camera (the camera can be directly pressed) are obtained through camera shooting.
Specifically, after the camera is started, corresponding to different fingers (at least two different fingers), continuous images of the fingers during the period from the beginning to the end of the period when the camera is completely shielded by the artificial marking fingers are respectively obtained.
1.2 acquiring finger characteristics according to the image.
Specifically, each frame of the continuous images corresponding to different fingers is marked as a finger class;
1.3 obtaining finger characteristics according to the finger class. It is also understood that the finger class is a finger feature; or extracting the characteristics of the fingers to obtain the finger characteristics.
It should be noted that, after the camera is pressed by the finger, the camera can be distinguished from the pressing of the camera by the color because the finger has blood and the flash lamp irradiates the finger and the camera can shoot the red finger.
1.4, respectively acquiring other images shot by a camera in a dark environment formed by enclosing barriers of different colors; for example taking successive images of the terminal while in pockets of different coloured cloth.
1.5 marking each frame of the other images as other classes;
and 1.6, training each frame of image of the finger class and other classes through a convolutional neural network to obtain a classifier. If the finger class is subjected to feature extraction, the finger class at the position is the extracted finger feature.
Second, identification process
2.1, matching each frame of the image shot by the camera through a classifier;
2.2 if the frame number of the first specified percentage in the preset time length is matched with the finger class, judging that the finger characteristic is recognized, and reducing the transparent mask layer to a specified size.
For example, if 80% of frames in 3 seconds are determined to be finger-like, the transparent mask is unlocked. Preferably, the transparent mask layer is reduced to a pixel size (at this time, the thread of the transparent mask layer is not recycled by the system, but is in a "sleep" state, which can ensure the realization of "locking screen" again).
And 2.3, after that, all touch instructions controlled by the terminal application by the user are not intercepted any more, but are transmitted to the upper layer application for analysis processing as usual.
2.4 if the frame number of the second specified percentage (for example, 50%) in the preset time length is matched with other classes, judging that the finger characteristics are not identified, and setting the mask layer to fully cover the terminal screen again. The screen locking can be recovered when the finger leaves the camera, and specifically, the transparent mask layer completely covers the terminal screen again by waking up the transparent mask layer thread.
The embodiment directly utilizes the camera and the flash lamp equipped in the terminal to unlock and lock the screen transparent shade, and has the characteristics of wide applicability and simple and convenient operation.
Particularly, as shown in fig. 2, the terminal projects a touch trajectory and a touch position corresponding to an operation after the user is "unlocked" into the head-mounted device in real time, so that the user can clearly identify the touch position of the user, thereby facilitating interaction.
Specifically, when in operation, the current touch position is located on the screen of the head-mounted device through a cross or a dot, and the horizontal and vertical positions are displayed in opposite colors on the frame, which can be embodied in a coordinate form; in addition, the track that the touch passes will also be displayed using the opposite color, and the current position of the finger touch will be displayed using the circle. Therefore, the user can conveniently and accurately touch. The display in the opposite color, namely the color opposite to the original pixel display of the current screen, can avoid the same color from being unclear.
Example two
This embodiment provides a specific application scenario corresponding to the first embodiment:
the user connects with the mobile phone through the head-mounted device (similar to google glasses, but no operating system is arranged in the glasses, and all display contents are projected into the head-mounted device through the hdmi screen by the mobile phone), and the video played on the mobile phone is watched through the head-mounted device so as to obtain a better film watching effect. But in the process, the mobile phone needs to keep bright screen to ensure that the mobile phone and the head-mounted device can play normally. If the mobile phone screen is locked and put into a pocket, the screen is blacked, and the content on the head-mounted equipment is not displayed; if the screen is not locked and the screen is put into a pocket, the mistaken touch is easy to generate. By using the method provided by the first embodiment, the transparent mask layer is displayed on the screen of the mobile phone, so that the mobile phone can be put into a pocket or a bag to continue to keep video playing (namely, screen-on), and error touch is effectively prevented.
After the transparent mask layer is enabled, all operations through a normal touch screen are intercepted by the mask layer and are not transmitted to the video app. Meanwhile, the brightness of the mobile phone is adjusted to be darkest so as to save electric quantity, and the brightness of the mobile phone does not influence the film watching effect of the head-mounted equipment because the head-mounted equipment is provided with an independent brightness adjusting function.
After the transparent mask layer is started, a flash lamp of the terminal is turned on, and a camera of the terminal is set to take pictures periodically, for example, 5 frames per second are obtained.
When the camera shoots an image of the camera behind the mobile phone pressed by a finger of a user, and a correct result is successfully identified through the classifier, the screen is automatically unlocked (the transparent shielding layer automatically reduces the window into 1 pixel point, and a touch event can automatically and directly transmit upper-layer application); through touch control of other fingers on the screen, the touch event can be directly transmitted to the video app, and automatic unlocking in the pocket and app operation are achieved. In addition, the finger ring can be matched, so that the finger cannot be loosened when the back camera is pressed by the finger because the finger leaves the screen.
When the fingers of the user release the camera (the mobile phone can not shoot the red finger image), the transparent window of the shade can be paved on the whole screen again.
When the combined operation is used, a cross positioning line is drawn on the screen of the head-mounted device by using the central point of the touch position, the horizontal position and the vertical position are displayed in opposite colors of the frame, the track which is touched to pass is displayed in the opposite colors, and the current position of the finger touch is displayed by using the circle. Therefore, the user can clearly see the position touched by the user, and therefore, the user can operate and make the required gesture operation.
EXAMPLE III
This embodiment corresponds to the first embodiment or the second embodiment, and provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when being executed by a processor, can implement the steps included in the terminal screen locking method combined with a camera according to the first embodiment or the second embodiment. The detailed steps are not repeated here, and refer to the description of the first embodiment or the second embodiment in detail.
In summary, the terminal screen locking method and the storage medium provided by the invention can maintain normal playing of the head-mounted device and effectively prevent mistaken touch; furthermore, the unlocking in the bag can be realized by directly utilizing the terminal flash lamp and the camera, and the bag unlocking device has the advantages of simple and convenient operation, wide applicability and low cost; furthermore, the terminal can be conveniently and accurately controlled in the dark to interact with the app; furthermore, the electric quantity of the terminal can be saved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (11)
1. A terminal screen locking method combined with a camera is used for a scene that eyes cannot directly view a terminal and the terminal needs to be controlled in the dark, and is characterized in that the terminal outputs a picture to a head-mounted device, and the method comprises the following steps:
starting a flash lamp of the terminal, and setting a camera of the terminal to take pictures periodically;
setting a mask layer on the uppermost layer of all applications of the terminal;
intercepting all touch events of the terminal through the mask layer;
when the finger characteristics of the camera are completely shielded by the fingers according to the shot images, the mask layer is reduced to a specified size, and a touch track and a current touch position on a terminal interface are displayed in the head-mounted equipment;
when the finger feature is not recognized, restoring the mask layer to the original shape;
the mask layer is a transparent mask layer;
the specified size is one pixel point;
and the terminal still plays the original app content under the transparent mask layer.
2. The terminal screen locking method combined with the camera according to claim 1, further comprising:
and adjusting the brightness of the terminal to be the lowest.
3. The method for locking the screen of the terminal combined with the camera according to claim 1, wherein the flash lamp of the terminal is turned on, the camera of the terminal is set to take pictures periodically, and before the method, the method further comprises:
starting a flash lamp of the terminal to obtain images of cameras completely shielded by different fingers;
and acquiring the finger characteristics according to the image.
4. The terminal screen locking method combined with the camera according to claim 3, wherein the obtaining of the image of the camera completely blocked by different fingers specifically comprises:
and starting the camera, and respectively obtaining continuous images of different fingers marked artificially from the beginning to the end of completely shielding the camera.
5. The terminal screen locking method combined with the camera according to claim 4, wherein the finger features are acquired according to the image, specifically:
marking each frame of the continuous images of different fingers as a finger class;
and acquiring the finger characteristics according to the finger types.
6. The terminal screen locking method combined with the camera according to claim 5, wherein the obtaining of the finger feature according to the finger class further comprises:
respectively acquiring other images shot by a camera under a dark environment formed by enclosing barriers of different colors;
marking each frame of the other images as other classes;
and training the finger class and other classes through a convolutional neural network to obtain a classifier.
7. The method for locking a screen of a camera-integrated terminal according to claim 6, wherein when the finger completely blocks the finger feature of the camera according to the captured image, the mask layer is reduced to a specified size, specifically:
matching each frame of the image shot by the camera through the classifier;
if the frame number of the first specified percentage in the preset duration is matched with the finger class, the finger characteristic is judged to be recognized, and the mask layer is shrunk to the specified size.
8. The method for locking a screen of a camera-integrated terminal according to claim 7, wherein when the finger feature is not recognized, the mask layer is restored to the original state by:
and if the frame number of the second specified percentage in the preset time length is matched with other classes, judging that the finger characteristics are not identified, and setting the mask layer to fully cover the terminal screen again.
9. The terminal screen locking method combined with the camera according to claim 1, further comprising:
and displaying horizontal and vertical coordinates in opposite colors at the position of a frame corresponding to the terminal interface in the head-mounted equipment.
10. The terminal screen locking method combined with the camera according to claim 1, wherein the touch trajectory is displayed using a reverse color; identifying the current touch location using a dot or cross center point.
11. A computer-readable storage medium, on which a computer program is stored, wherein the program, when executed by a processor, is capable of implementing the steps included in a terminal screen locking method in combination with a camera according to any one of the preceding claims 1 to 10.
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| CN115150550A (en) * | 2022-06-20 | 2022-10-04 | 湖北星纪时代科技有限公司 | Photographing processing method and device for terminal, electronic equipment and storage medium |
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| CN102868821A (en) * | 2012-09-20 | 2013-01-09 | 广东欧珀移动通信有限公司 | Screen activating and unlocking method for mobile terminal |
| CN104346604A (en) * | 2013-07-26 | 2015-02-11 | 株式会社日立制作所 | A blood vessel image capturing apparatus and a terminal |
| CN103399640A (en) * | 2013-08-16 | 2013-11-20 | 贝壳网际（北京）安全技术有限公司 | Method and device for controlling according to user gesture and client |
| CN103729640A (en) * | 2013-12-24 | 2014-04-16 | 小米科技有限责任公司 | Finger vein feature extraction method and device and terminal |
| CN105487641A (en) * | 2015-12-25 | 2016-04-13 | 百度在线网络技术（北京）有限公司 | Control method and device of terminal devices |
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