CN108132713B - Switching device - Google Patents
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- CN108132713B CN108132713B CN201810106855.0A CN201810106855A CN108132713B CN 108132713 B CN108132713 B CN 108132713B CN 201810106855 A CN201810106855 A CN 201810106855A CN 108132713 B CN108132713 B CN 108132713B
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Abstract
A switching device for controlling an electronic device, the switching device comprising: an image sensor for continuously acquiring image frames; the processing unit is used for judging the shape and the area of an object according to the image frame, and generating a control signal when the shape of the object conforms to a preset shape, the area of the object conforms to a preset area and the change of the preset area occurs in a preset time, wherein the preset shape is circular or elliptical, and the processing unit also identifies an elliptical object or a circular object with a fixed position as a background object in advance and eliminates the background object; and a transmission unit for transmitting the control signal to the electronic device.
Description
The application is a divisional application of Chinese invention patent application with application number 201210555142.5, application date 2012, 12 and 19 and named as 'switch device'.
Technical Field
The present invention relates to a switch device, and more particularly, to an optical switch device that performs a switching operation according to a change in a gesture image of a palm gesture and a fist-making gesture of a user.
Background
Conventional mechanical switches generally have the problem of inconvenience, for example they are usually arranged in fixed positions, and the user must directly touch the mechanical switch to control each operation. In addition, when the conventional mechanical switch fails, it is not easy to perform component replacement.
In order to increase the convenience of use, it is also known to use an infrared switch for switching operation. For example, when the infrared switch detects a moving object, the relative control light source is turned on. However, the infrared switch starts to operate as long as a moving object is detected, and such a switch device is not suitable for use in some cases.
It is also known to use a remote control as a switch device, so that a user can perform corresponding control by pressing a key on the remote control. However, when the user wants to perform the switch operation, the user still needs to be able to perform the operation through the remote controller.
In view of the above, the present invention further provides an optical switch device, which can perform a switching operation according to a gesture change of a user, and is applicable to various electronic devices without using a remote controller as a medium, thereby having high convenience and applicability.
Disclosure of Invention
The present invention is directed to a switch device, which can perform a switching operation according to a gesture image change within a predetermined time to relatively control an electronic device.
Another object of the present invention is to provide a switching device, which can perform a switching operation according to an image change within a preset image range in an image frame to relatively control an electronic device.
The invention provides a switching device which comprises an image sensor, a processing unit and a transmission unit. The image sensor is used for continuously acquiring image frames. The processing unit is used for judging the shape of an object and the area of the object according to the image frame, generating a control signal when the shape of the object accords with a preset shape and the area of the object accords with a preset area and changes the preset area within a preset time, wherein the preset shape is circular or elliptical, and the processing unit also recognizes and excludes the elliptical object or the circular object with a fixed position as a background object in advance. The transmission unit is used for transmitting the control signal to an electronic device so as to control the opening and closing of the electronic device.
In an embodiment, the processing unit may process only image information of a preset image range of the image frame acquired by the image sensor within the preset time, so as to save system resources.
In one embodiment, the image sensor may be a far infrared sensor for directly sensing far infrared energy emitted from a human body.
In one embodiment, the switch device may further include a red light source, an infrared light source, or an invisible light source to illuminate the field of view of the image sensor.
In one embodiment, the switch device may further include a solar module for providing power required for operation; the solar module can comprise a solar panel for converting light energy into electric energy and a battery for storing the electric energy.
In the switching device and the operating method thereof according to the embodiment of the present invention, the predetermined shape may be a circle or an ellipse; the preset area change can be 40-60% of the area change of the object or 140-160% of the area change; the preset time may be 0.5 to 2 seconds, but is not limited thereto.
In the switching device and the operating method thereof according to the embodiments of the present invention, the processing unit may directly recognize a palm gesture and a fist gesture in a closer operating range and recognize an object shape and an object area in a farther operating range, so as to improve an applicable environment thereof.
Drawings
FIG. 1 is a block diagram of a switching device according to an embodiment of the present invention;
FIG. 2 is a block diagram of a switching device according to another embodiment of the present invention;
FIG. 3 is a flow chart illustrating a method of operating a switching device according to an embodiment of the present invention;
FIG. 3A is a schematic diagram showing a gesture change of the operation method of the switch device of FIG. 3;
FIG. 4 shows a flow chart of a method of operating a switching device according to another embodiment of the present invention;
FIG. 4A is a schematic diagram illustrating the variation of the area of an object in the method of operation of the switching device of FIG. 4;
FIG. 5 shows a flow chart of a method of operating a switching device according to another embodiment of the present invention;
fig. 6 shows a schematic diagram of an operation method of a switching device according to an embodiment of the present invention.
Description of the reference numerals
1. 1' switching device 11 image sensor
11' far infrared ray sensor 12 processing unit
13 transmission unit 14 light source
15 solar module 2 electronic device
IF image frame Sc control signal
PA Preset image Range S31-S34Step (ii) of
S41-S46Step S51-S52And (5) carrying out the following steps.
Detailed Description
In order that the manner in which the above recited and other objects, features, and advantages of the present invention are obtained will become more apparent, a more particular description of the invention briefly described below will be rendered by reference to the appended drawings. In the description of the present invention, the same components are denoted by the same reference numerals and are described in advance.
Referring to fig. 1, a block diagram of a switching device 1 according to an embodiment of the invention is shown, including an image sensor 11, a processing unit 12, a transmission unit 13 and a light source 14. The switching device 1 is used to control an electronic device 2, for example, to control the starting (enable) or stopping (disable) of a light fixture, an automatic door or other household appliances, or to control the electronic device 2 to change an operating parameter, such as operating intensity, in a stepwise manner.
The image sensor 11 may be a CMOS image sensor, a CCD image sensor or other sensor capable of sensing light energy for continuously acquiring and outputting image frames IF.
The processing unit 12 may be, for example, a digital processing unit (DPS) or other processor capable of processing image information, and is configured to recognize a palm gesture (palm gesture), a fist gesture (first gesture), an object shape, an object area, a gesture change and an object area change according to the image frames IF, and generate a control signal Sc (detailed later) when a preset rule is met within a preset time. In one embodiment, the predetermined time may be 0.5 to 2 seconds, but is not particularly limited; for example, in other embodiments, the preset time may be a period during which the image sensor 11 (or the far infrared ray sensor 11' of fig. 2) acquires a preset number of image frames IF, which may be set according to the use requirement.
The transmission unit 13 may be a wireless transmission unit or a wired transmission unit, and is configured to transmit the control signal Sc to the electronic device 2 for performing corresponding control; the wired transmission technology and the wireless transmission technology are known, and therefore, they are not described herein again.
The light source 14 may be a red light source, an infrared light source or other invisible light source, which is used to illuminate the field of view of the image sensor 11. Thereby, the image sensor 11 can acquire the image frame IF of higher quality.
Referring to fig. 2, a block diagram of a switch device 1 'according to another embodiment of the invention is shown, which includes a far infrared sensor 11', the processing unit 12 and the transmission unit 13. The difference between fig. 2 and fig. 1 is that the image sensor 11 of fig. 1 is now a far infrared ray sensor 11'. Since the switch device 1 'uses the far infrared sensor 11', the far infrared energy emitted from the human body can be directly sensed even when the ambient light is insufficient, and thus, an additional light source is not required. In addition, the functions performed by the processing unit 12 and the transmission unit 13 in fig. 2 are similar to those in fig. 1, and therefore are not described herein again.
In addition, the switching devices 1 and 1' of the embodiments of the present invention may further include a solar module 15 for supplying power required for operation; the solar module 15 may include a solar panel for converting light energy into electric energy and a battery for storing electric energy; the technology of solar modules is well known and will not be described herein. In other embodiments, the switch device 1 may also be directly connected to the commercial power system or provide power via other household appliances (e.g., the electronic device 2), and the solar module 15 is not necessarily used.
In addition, the switching devices 1 and 1 'according to the embodiments of the present invention may further include at least one lens or a lens group to improve the illumination efficiency of the light source 14 and/or the photosensitive efficiency of the image sensor 11 or the far infrared sensor 11'.
Referring to fig. 1-3, fig. 3 is a flow chart illustrating an operation method of a switching device according to an embodiment of the invention, including the following steps: image frames are acquired (step S)31) (ii) a Recognizing a palm gesture or a fist-making gesture (step S)32) (ii) a And an access switchControl mode (step S)33) (ii) a In this embodiment, the present embodiment is applicable to a case where the user is close to the image sensor 11 and the processing unit 12 can directly recognize the palm shape or the fist shape. In this embodiment, in order to save system resources, the method may further include a step S of selecting a preset image range34。
Referring to fig. 3, 3A and 6 together, a detailed embodiment of the present embodiment will be described.
Step S31: the image sensor 11 (or the far infrared ray sensor 1') continuously acquires image frames IF at a fixed or variable sampling frequency; for example, when the object image is not detected for a long time, the processing unit 12 may decrease the sampling frequency (i.e., enter a power saving mode), and the time duration may be set according to different applications.
Step S32: the processing unit 12 identifies a palm gesture or a fist gesture from the image frames IF, and when the palm gesture or the fist gesture is identified (e.g., at a first image frame IF)1Recognizing the palm gesture or fist-making gesture), entering a switch control mode (step S)33) (ii) a When the palm gesture or the fist gesture is not recognized by the processing unit 12, it is re-recognized according to the next image frame IF.
Step S33: in the on-off control mode, the processing unit 12 is mainly configured to recognize a preset gesture change within a preset time; wherein the preset gesture change can be a change from the palm gesture to the fist-making gesture or a change from the fist-making gesture to the palm gesture (as in fig. 3A). When the processing unit 12 recognizes the preset gesture change within the preset time (e.g. in a second image frame IF)2Recognizing the fist making gesture or the palm gesture) (step S)331) Then, a control signal Sc is generated (step S)3311) (ii) a However, when the processing unit 12 does not recognize the preset gesture change within the preset time (step S)332) Then, leave the switch control mode and go back to step S again31。
Step S34: as previously describedTo save system resources, for example, when the processing unit 12 is in the first image frame IF1When the palm gesture is recognized, recognizing the fist making gesture only according to a preset image range PA (shown in FIG. 3A) in a subsequent image frame IF; or in the first image frame IF1When the fist-making gesture is recognized, the palm gesture is recognized in the subsequent image frame according to the preset image range PA (as shown in FIG. 3A). In an embodiment, the processing unit 12 may process only the image information of the preset image range PA of the image frame IF acquired by the image sensor 11 (or the infrared sensor 11') within the preset time. In another embodiment, the processing unit 12 can also process the image information of the whole image frame IF, however, only the image information of the preset image range PA is regarded as valid image information and the image information of other parts can be used as references for other functions. The preset image range PA may be preset, for example, according to the operable range of the switch device 1, 1' or selected by the user. Furthermore, step S34May not be implemented.
In summary, in the embodiment, the processing unit 12 is configured to generate the control signal Sc to relatively control the electronic device 2 when the palm gesture and the fist gesture are sequentially recognized or the fist gesture and the palm gesture are sequentially recognized according to the image frames IF within a preset time, as shown in fig. 6.
Referring to fig. 1, 2 and 4, fig. 4 is a flow chart showing an operation method of a switching device according to another embodiment of the present invention, including the following steps: image frames are acquired (step S)41) (ii) a Judging the shape of the object (step S)42) (ii) a Judging the area of the object (step S)43) (ii) a When the shape of the object is in accordance with a preset shape and the area of the object is in accordance with a preset area, the method goes to step S45When the shape of the object does not conform to the preset shape or the area of the object does not conform to the preset area, the method returns to the step S41(step S)44) (ii) a In this embodiment, the image sensor 11 (or the infrared sensor 11') is far away from the user, and the processing unit 12 cannot clearly recognize the palm shape or the fist shapeSituations where only the object contour and area can be identified; but may also be applied in a case where the palm shape or the fist shape can be definitely recognized. Similarly, in this embodiment, in order to save system resources, the method may further include a step S of selecting a preset image range46。
Referring to fig. 4, 4A and 6 together, a detailed embodiment of the present embodiment will be described.
Step S41: like step S31The image sensor 1 (or the far infrared ray sensor 1') may continuously acquire image frames IF at a fixed or variable sampling frequency.
Step S42: the processing unit 12 determines whether the shape of the object conforms to a preset shape according to the image frame IF. For example, when the user is far from the image sensor 11 or the resolution of the image sensor 11 is low, the outline of the palm gesture is approximately elliptical and the outline of the fist gesture is approximately circular (as shown in fig. 4A). Therefore, when the processing unit 12 determines that the object image conforms to an ellipse or a circle, the determination of the object area is started. In addition, in order to exclude background objects, the processing unit 12 may recognize and exclude objects which are always fixed in position and have an elliptical or circular shape in advance.
Step S43: then, the processing unit 12 determines whether the area of the object conforms to a preset area (or area range) according to the image frame IF, so as to eliminate the object which does not correspond to the gesture of the user; wherein the predetermined area may be predetermined according to an operating environment of the switching device 1, 1'. For example, within an operable range of 5 meters, the areas of the palm gesture and the fist gesture can be measured in advance and stored in the switch device 1, 1', and the processing unit 12 can exclude the image of the object with the preset area or the object with the area outside the preset area range to increase the judgment accuracy. For example, the head image of the user does not fall within the range of the preset area, so the processing unit 12 can exclude the head image.
Step S44: when the processing unit 12 determines that the object shape corresponds to a preset shape and the object area corresponds to a preset area, enteringSwitch control mode (step S)45) (ii) a Otherwise, go back to step S41。
Step S45: in the on-off control mode, the processing unit 12 is mainly configured to recognize a preset area change within a preset time; wherein the predetermined area change is, for example, step S43An area change of 40% -60% (e.g., from palm to fist) or 140% -160% (e.g., from fist to palm) of the identified object area (as in fig. 4A). When the processing unit 12 recognizes the preset area change within the preset time (step S)451) Then, a control signal Sc is generated (step S)4511) (ii) a However, when the processing unit 12 does not recognize the preset area change within the preset time (step S)452) Then, leave the switch control mode and go back to step S again41. For example, FIG. 6 shows the processing unit 12 at a first image frame IF1Judging whether the shape of the object conforms to a preset shape or the area of the object conforms to a preset area and the object is in a second image frame IF2And identifying the preset area change.
Step S46: as mentioned before, in order to save system resources, e.g. when the processing unit 12 is in the first image frame IF1Wherein the object shape corresponds to the preset shape and the object area corresponds to the preset area are identified, the processing unit 12 identifies the preset area change in the subsequent image frame IF only according to a preset image range PA. Similarly, in an embodiment, the processing unit 12 may process only the image information of the preset image range PA of the image frame IF acquired by the image sensor 11 within the preset time. In another embodiment, the processing unit 12 can also process the image information of the whole image frame IF, however, only the image information of the preset image range PA is regarded as valid image information and the image information of other parts can be used as references for other functions. In the same way, step S46Optionally, not implemented.
In summary, in the embodiment, the processing unit 12 is configured to determine an object shape and an object area according to the image frame IF, and when the object shape conforms to a preset shape and the object area conforms to a preset area and a change of the preset area occurs within a preset time, as shown in fig. 6, a control signal Sc is generated to relatively control the electronic device 2.
Referring to fig. 5, a flow chart of a method for operating a switching device according to another embodiment of the invention is shown. In this embodiment, in order to increase the applicability of the switching device 1, 1', the processing unit 12 may perform the steps of fig. 3 and 4 simultaneously; that is, the embodiment of fig. 3 is performed when the processing unit 12 can definitely recognize the palm shape and the fist shape and the embodiment of fig. 4 is performed when the palm shape and the fist shape cannot definitely recognize them, so as to be suitable for the operation at the near and far distances.
The present embodiment includes the following steps: image frames are acquired (step S)51) (ii) a Judging the specific gesture (step S)52) (ii) a When the specific gesture is recognized, directly entering a switch control mode (step S)521) (ii) a When the specific gesture is not recognized, the object shape and the object area are recognized (step S)522) (ii) a And entering a switch control mode when the object shape corresponds to a preset shape and the object area corresponds to a preset area (step S)5221) (ii) a When the specific gesture is not recognized and the object shape does not conform to the preset shape or the object area does not conform to the preset area, returning to the step S51The image frame IF is reacquired.
Referring to fig. 3, 3A, 4A, 5 and 6 as well, a detailed embodiment of the present embodiment will be described.
Step S51: like step S31And S41The image sensor 1 (or the far infrared ray sensor 1') continuously acquires image frames IF at a fixed or variable sampling frequency.
Step S52: the processing unit 12 recognizes a specific gesture from the image frame IF; wherein the specific gesture can be a palm gesture or a fist-making gesture (as shown in fig. 3A), and when the specific gesture is recognized, the switch control mode is entered (step S)521). In this embodiment, the switching mode is entered (step S)521) Then executing step S of FIG. 3331And S3331Or step S332And optionally executing or not executing step S34(ii) a Wherein, step S331、S3331、S332And step S34Before the description, further description is omitted for simplicity.
Step S522: when the specific gesture is not recognized by the processing unit 12, judging the shape and area of the object according to the image frame IF; when the shape of the object is in accordance with a preset shape and the area of the object is in accordance with a preset area, entering a switch control mode (step S)5221). In this embodiment, the switching mode is entered (step S)5221) Then step S of FIG. 4 is performed451And S4511Or step S452And optionally executing or not executing step S46(ii) a Wherein, step S451、S4511、S452And step S46Before the description, further description is omitted for simplicity. For example, the processing unit 12 may recognize a specific gesture every time an image frame IF is received, and recognize an object shape and an object area when the specific gesture cannot be recognized.
It has to be noted that the way in which the processing unit 12 recognizes a palm gesture or a fist gesture in the image frame IF may be performed, for example, depending on the shape of the object in the image frame IF; the processing unit 12 may set at least one brightness threshold, for example, to recognize the object shape and the object area in the image frame IF, and determine the object shape and the object area according to the pixel arrangement in the image frame IF with the brightness greater than the brightness threshold. The method of operation of the switchgear of fig. 3-5 can be applied to both the switchgear 1 and 1' of fig. 1 and 2.
In summary, the conventional switch device still has the situation of inconvenient operation or being unable to adapt to the specific situation. The present invention also provides a switch device (fig. 1 and 2) and an operation method thereof (fig. 3 to 6), which can perform a switching operation directly according to an image change such as a palm gesture or a fist-making gesture of a user, and can exclude an environmental object to avoid a malfunction.
Although the present invention has been disclosed in the context of the foregoing embodiments, it is not intended to be limited thereto, and various changes and modifications can be made by one skilled in the art without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention is subject to the scope defined by the appended claims.
Claims (8)
1. A switching device for controlling an electronic device, the switching device comprising:
an image sensor for continuously acquiring image frames;
the processing unit is used for judging the shape and the area of an object according to the image frame, generating a control signal when the shape of the object conforms to a preset shape, the area of the object conforms to a preset area and the change of the preset area occurs in preset time, wherein the preset shape is circular or elliptical, the processing unit also identifies an elliptical object or a circular object with a fixed position as a background object in advance and eliminates the background object, and the processing unit starts to judge the area of the object when the shape of the object conforms to the preset shape; and
a transmission unit for transmitting the control signal to the electronic device,
wherein, the image sensor is a far infrared sensor to directly sense the far infrared energy emitted by the human body without using an additional light source.
2. The switching device according to claim 1, wherein when the object shape conforms to the preset shape and the object area conforms to the preset area in a first image frame, the processing unit identifies the preset area change only according to a preset image range in a subsequent image frame.
3. The switching device according to claim 2, wherein the processing unit processes only the image information of the preset image range within the preset time.
4. A switchgear according to any of claims 1-3, further comprising solar modules for providing the power required for operation.
5. A switching device according to any one of claims 1 to 3, wherein the predetermined area change is 40-60% or 140-160% of the area of the object.
6. A switching device according to any one of claims 1-3, wherein the preset time is 0.5-2 seconds.
7. The switching device according to claim 1, wherein the processing unit determines the object shape and the object area from the image frame when a palm gesture or a fist-making gesture is not recognized from the image frame.
8. The switching device according to claim 7, wherein when the processing unit recognizes the palm gesture or the fist gesture in a first image frame, only image information of a preset image range of the image frame acquired by the image sensor is processed for the preset time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810106855.0A CN108132713B (en) | 2012-12-19 | 2012-12-19 | Switching device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210555142.5A CN103885572B (en) | 2012-12-19 | 2012-12-19 | Switching device |
| CN201810106855.0A CN108132713B (en) | 2012-12-19 | 2012-12-19 | Switching device |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210555142.5A Division CN103885572B (en) | 2012-12-19 | 2012-12-19 | Switching device |
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| CN108132713A CN108132713A (en) | 2018-06-08 |
| CN108132713B true CN108132713B (en) | 2021-06-18 |
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| CN106709403A (en) * | 2015-11-13 | 2017-05-24 | 钰太芯微电子科技（上海）有限公司 | Gesture discrimination system and method based on far infrared light |
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| US7821541B2 (en) * | 2002-04-05 | 2010-10-26 | Bruno Delean | Remote control apparatus using gesture recognition |
| JP3752246B2 (en) * | 2003-08-11 | 2006-03-08 | 学校法人慶應義塾 | Hand pattern switch device |
| DE102006037156A1 (en) * | 2006-03-22 | 2007-09-27 | Volkswagen Ag | Interactive operating device and method for operating the interactive operating device |
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| US5168531A (en) * | 1991-06-27 | 1992-12-01 | Digital Equipment Corporation | Real-time recognition of pointing information from video |
| CN101517515A (en) * | 2006-09-28 | 2009-08-26 | 诺基亚公司 | Improved user interface |
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| CN101989150A (en) * | 2009-07-29 | 2011-03-23 | 原相科技股份有限公司 | Gesture recognition method and touch system using same |
| CN102509079A (en) * | 2011-11-04 | 2012-06-20 | 康佳集团股份有限公司 | Real-time gesture tracking method and tracking system |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103885572A (en) | 2014-06-25 |
| CN108132713A (en) | 2018-06-08 |
| CN103885572B (en) | 2018-03-09 |
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