CN102055844B - Method for realizing camera shutter function by means of gesture recognition and handset device - Google Patents
Method for realizing camera shutter function by means of gesture recognition and handset device Download PDFInfo
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- CN102055844B CN102055844B CN2010105442147A CN201010544214A CN102055844B CN 102055844 B CN102055844 B CN 102055844B CN 2010105442147 A CN2010105442147 A CN 2010105442147A CN 201010544214 A CN201010544214 A CN 201010544214A CN 102055844 B CN102055844 B CN 102055844B
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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
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
Abstract
The invention relates to the field of mobile terminals, and discloses a method for realizing a camera shutter function by means of gesture recognition and a mobile phone. In the invention, when a camera function is started, an infrared inductive transducer (proximity transducer) is used for recognizing fixed gestures, simulating a camera shutter and controlling a camera to realize a function of focusing a to take pictures and a function of focusing a to return to preview for a camera; and the mobile phone with the camera has the new functions of focusing a to take pictures and focusing a to return to preview, thus providing convenience for users.
Description
Technical field
The present invention relates to field of mobile terminals, in particular a kind of method and mobile device of realizing the camera shutter function by gesture identification.
Background technology
The camera function of mobile phone from strength to strength, press on towards the card digital camera on market, on market, the mobile phone cam pixel has been up to 1,200 ten thousand pixels now, and the 5000000 pixel supports shooting mobile phone of focusing have automatically just like become the market mainstream, even might become the standard configuration of street machine.
Yet due to Cell Phone Design spatial limitation and product reliability requirement, most of mobile phone is can not digital camera the same, be equipped with convenient and practical camera shutter, the mobile phone of prior art band camera does not have the function of " focusing à takes pictures ", " focusing à turns back to preview ".
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The technical problem to be solved in the present invention is, defects for prior art, a kind of method and mobile device of realizing the camera shutter function by gesture identification is provided, it makes mobile phone with camera increase the new function of " focusing à takes pictures ", " focusing à turns back to preview ", provides users with the convenient.
The technical scheme that technical solution problem of the present invention adopts is as follows:
A kind of method that realizes the camera shutter function by gesture identification wherein, comprises step:
A, unlatching camera function, setting controls infrared LED by central processing unit and drive circuit sends infrared light;
B, setting receive described infrared light by the infrared induction transducer and are reflected back the reflective infrared light signal of varying strength by different gestures, and the digital signal that this reflective infrared light signal is converted into varying strength sends to described central processing unit;
C, described central processing unit receive the digital signal of described varying strength from the infrared induction transducer, and produce corresponding control signal according to the digital signal of this varying strength, realize corresponding shutter function to control camera.
The described method that realizes the camera shutter function by gesture identification, wherein, described step C further comprises:
C1, under preview mode, when in very first time section T1, when the digital signal that described central processing unit receives from described infrared induction transducer is the trend of changing from small to big, controls described camera and realize focus function;
C2, wait the second time T 2, described camera focusing is completed.
The described method that realizes the camera shutter function by gesture identification, wherein, described step C also comprises:
C30, complete when described camera focusing, in the 3rd time period T3, when the digital signal that described central processing unit receives from described infrared induction transducer is from large to small trend, controls described camera and realize camera function.
The described method that realizes the camera shutter function by gesture identification, wherein, described the 3rd time period T3 is less than 1/2nd of very first time section T1.
The described method that realizes the camera shutter function by gesture identification, wherein, described step C also comprises:
C31, complete when described camera focusing, in the 4th time period T4, when the digital signal that described central processing unit receives from described infrared induction transducer is from large to small trend, controls described camera and return to preview mode.
The described method that realizes the camera shutter function by gesture identification, wherein, described the 4th time period T4 equals very first time section T1.
A kind of mobile device wherein, comprises infrared LED and drive circuit, infrared induction transducer, central processing unit and camera;
Described infrared LED and drive circuit are connected with described central processing unit, are used for sending infrared light according to the control of described central processing unit;
Described infrared induction transducer is connected with described central processing unit, be used for receiving described infrared light and be reflected back the reflective infrared light signal of varying strength by different gestures, and the digital signal that this reflective infrared light signal is converted into varying strength sends to described central processing unit;
Described central processing unit is used for receiving from described infrared induction transducer the digital signal of described varying strength, and produces corresponding control signal according to the digital signal of this varying strength, realizes corresponding shutter function to control described camera.
Described mobile device, wherein, the infrared LED in described infrared LED and drive circuit and described infrared induction sensor setting be on same plane, and arrange one every tabula rasa between described infrared LED and described infrared induction transducer;
Described central processing unit is connected with described infrared LED and drive circuit by IO mouth control switch; Described camera, infrared induction transducer are connected with described central processing unit by the I2C bus respectively.
Described mobile device, wherein, described camera is the camera with automatic focusing camera function, described shutter function comprises: focusing à camera function, focusing à turn back to preview function; Described focusing à camera function specifically comprises: C1, under preview mode, when in very first time section T1, when the digital signal that described central processing unit receives from described infrared induction transducer is the trend of changing from small to big, controls described camera and realize focus function; C2, wait the second time T 2, described camera focusing is completed; C30, complete when described camera focusing, in the 3rd time period T3, when the digital signal that described central processing unit receives from described infrared induction transducer is from large to small trend, controls described camera and realize camera function; And described the 3rd time period T3 is less than 1/2nd of very first time section T1; Described focusing à specifically comprises when turning back to preview function: C1, under preview mode, when in very first time section T1, when the digital signal that described central processing unit receives from described infrared induction transducer is the trend of changing from small to big, controls described camera and realize focus function; C2, wait the second time T 2, described camera focusing is completed; C31, complete when described camera focusing, in the 4th time period T4, when the digital signal that described central processing unit receives from described infrared induction transducer is from large to small trend, controls described camera and return to preview mode; And described the 4th time period T4 equals very first time section T1.
Described mobile device, wherein, described central processing unit further comprises:
Focusing control unit is used under preview mode, when in very first time section T1, when the digital signal that receives from described infrared induction transducer is the trend of changing from small to big, controls described camera and realizes focus function; And wait for the second time T 2, described camera focusing is completed;
The control unit of taking pictures is used for completing when described camera focusing, in the 3rd time period T3, when the digital signal that receives from described infrared induction transducer is from large to small trend, controls described camera and realizes camera function;
The preview control unit is used for completing when described camera focusing, in the 4th time period T4, when the digital signal that receives from described infrared induction transducer is from large to small trend, controls described camera and returns to preview mode;
Wherein, described the 3rd time period T3 is less than 1/2nd of very first time section T1, and described the 4th time period T4 equals very first time section T1.
Method and the mobile device of realizing the camera shutter function by gesture identification provided by the present invention, owing to having adopted when camera function is opened, identify fixedly gesture by infrared induction transducer (also being proximity transducer), the analog camera shutter is controlled camera " focusing à takes pictures ", " focusing à turns back to preview "; It makes mobile phone with camera increase the new function of " focusing à takes pictures ", " focusing à turns back to preview ", provides users with the convenient.
Description of drawings
The mobile device theory diagram of Fig. 1 embodiment of the present invention.
Fig. 2 embodiment of the present invention mobile device operation principle structural representation.
Fig. 3 is the inner theory diagram of the central processing unit of embodiment of the present invention mobile device.
Fig. 4 be the embodiment of the present invention realize the method flow diagram of camera shutter function by gesture identification.
Fig. 5 is take pictures motion characteristic and recognition principle figure of the mobile device focusing à of the embodiment of the present invention.
Fig. 6 is that the mobile device focusing à of the embodiment of the present invention turns back to preview action characteristic and recognition schematic diagram.
Fig. 7 is the mobile device work sampling principle flow chart of the embodiment of the present invention.
Embodiment
A kind of method and mobile device of realizing the camera shutter function by gesture identification provided by the invention, clearer, clear and definite for making purpose of the present invention, technical scheme and advantage, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
A kind of mobile device of the embodiment of the present invention as shown in Figure 1, comprises infrared LED and drive circuit 110, infrared induction transducer 120, central processing unit 130 and camera 140;
Described infrared LED and drive circuit 110 are connected with described central processing unit 130, are used for sending infrared light according to the control of described central processing unit 130; Preferably, as shown in Figure 1, described central processing unit 130 is connected with described infrared LED and drive circuit 110 by IO mouth control switch.
Described infrared induction transducer 120 is connected with described central processing unit 130, be used for receiving described infrared light and be reflected back the reflective infrared light signal of varying strength by different gestures, and the digital signal that this reflective infrared light signal is converted into varying strength is sent to described central processing unit 130;
Described central processing unit 130 is used for receiving from described infrared induction transducer 120 digital signal of described varying strength, and produces corresponding control signal according to the digital signal of this varying strength, realizes corresponding shutter function to control described camera 140.Preferably, described camera 140, infrared induction transducer 120 are connected with described central processing unit 130 by the I2C bus respectively, and described camera is the camera with automatic focusing camera function, and described shutter function comprises: focusing à camera function, focusing à turn back to preview function.
Preferably, as shown in Figure 2, infrared LED 111 in described infrared LED and drive circuit 110 is arranged on same plane 101 with described infrared induction transducer 120, and arranges one every tabula rasa 102 between described infrared LED 111 and described infrared induction transducer 120.
Its control principle as shown in Figure 2, the infrared LED 111 infrared light pulses of emission, when infrared light ran into object, some light reflected or reflexes to slowly on infrared light transducer[sensor 120, through infrared light transducer[sensor 120, light signal is converted into digital signal, then exports to described central processing unit 130; Object and induction region are nearer, and the light that reflects is more, and the light that infrared light transducer[sensor 120 receives is stronger, and the digital signal data that changes into is larger, and central processing unit 130 can be done relevant treatment by camera 140 according to the Digital Signals of reading.
Described mobile device, as shown in Figure 3, described central processing unit 130 further comprises:
Focusing control unit 131 is used under preview mode, when in very first time section T1, when the digital signal that receives from described infrared induction transducer is the trend of changing from small to big, controls described camera and realizes focus function; And wait for the second time T 2, described camera focusing is completed.
The control unit 132 of taking pictures is used for completing when described camera focusing, in the 3rd time period T3, when the digital signal that receives from described infrared induction transducer is from large to small trend, controls described camera and realizes camera function.
Wherein, described the 3rd time period T3 is less than 1/2nd of very first time section T1, and described the 4th time period T4 equals very first time section T1.
Based on the operation principle of above-described embodiment mobile device, the embodiment of the present invention also provides a kind of method that realizes the camera shutter function by gesture identification, as shown in Figure 4, comprises the following steps:
Step S410, unlatching camera function, setting controls infrared LED by central processing unit and drive circuit sends infrared light;
Step S420, setting receive described infrared light by the infrared induction transducer and are reflected back the reflective infrared light signal of varying strength by different gestures, and the digital signal that this reflective infrared light signal is converted into varying strength sends to described central processing unit;
Step S430, described central processing unit receive the digital signal of described varying strength from the infrared induction transducer, and produce corresponding control signal according to the digital signal of this varying strength, realize corresponding shutter function to control described camera.
Wherein, described step S430 further comprises: realize focusing à camera function and realize that focusing à turns back to preview function.
When realizing that focusing à camera function specifically comprises: C1, under preview mode, when in very first time section T1, when the digital signal that described central processing unit receives from described infrared induction transducer is the trend of changing from small to big, controls described camera and realize focus function; C2, wait the second time T 2, described camera focusing is completed.C30, complete when described camera focusing, in the 3rd time period T3, when the digital signal that described central processing unit receives from described infrared induction transducer is from large to small trend, controls described camera and realize camera function.And described the 3rd time period T3 is less than 1/2nd of very first time section T1.
Specifically comprise when realizing that focusing à turns back to preview function:: C1, under preview mode, when in very first time section T1, when the digital signal that described central processing unit receives from described infrared induction transducer is the trend of changing from small to big, controls described camera and realize focus function; C2, wait the second time T 2, described camera focusing is completed; C31, complete when described camera focusing, in the 4th time period T4, when the digital signal that described central processing unit receives from described infrared induction transducer is from large to small trend, controls described camera and return to preview mode.And described the 4th time period T4 equals very first time section T1.
Below will the present invention be described in further detail by concrete Application Example.
When realizing focusing à camera function, its motion characteristic and identification are referring to embodiment as shown in Figure 5:
L focus operation: as shown in Figure 5,111 is the infrared induction transducer, when pointing 200(referring to Fig. 2) by far passing closely to infrared induction transducer 111 induction windows, the vertical gesture near infrared induction transducer 111 induction windows of finger is namely arranged, the digital signal of infrared induction transducer 111 outputs is gradient to DATA (max) by DATA (0), process used time T1.
In the specific implementation, step 710 as shown in Figure 7 is under preview mode, infrared LED sampling ten secondary data are set, average, DATA (0)=average (D0-D9), wherein, DATA(0) corresponding is environment or inner diffraction infrared light intensity; Judgement sampling DATA (0)＜D(n)? if words get K=n; If D (n)〉DATA (0), the infrared light intensity that receives is greater than original value, and showing has finger close, and K is used for recording transition point.
As D (n)〉D (n-1), the infrared light strength increase that receives shows finger close sensor measurement (sensor) zone.
D (n) no longer increases, and shows that finger has touched the sensor zone; DATA(max) be corresponding data of intensity of reflected light this moment, T1 is for from beginning near to the upper sensor time used of contact.
The action of taking pictures: as shown in Figure 5, finger 200 slides to a side (referring to Fig. 2) from infrared induction sensor sensing window, namely after to good focal length, the parallel gesture that skids off of finger is arranged; 111 outputs of infrared induction transducer are gradient to DATA (0) by DATA (max), process used time T3.In the specific implementation, as shown in Figure 7 step 720; D (n)＜DATA(max); Expression accept light intensity begin to weaken; The moment that the M correspondence begins to weaken; T3 is the time minimum used that light intensity has maximum to weaken; T1〉2*T3, T1 is greater than the T3 of twice; The judgement gesture is that finger slides to a side; Otherwise the judgement finger vertically returns.
L and T1 is set generally greater than twice T3;
Therefore, at the mobile phone cam preview mode, be gradient to DATA (max) when transducer output D (n) being detected by DATA (0), last T1, i.e. judgement has the vertical close gesture of finger, controls described camera 140 and realizes focus function.Namely under preview mode, when in very first time section T1, when the digital signal that described central processing unit receives from described infrared induction transducer is the trend of changing from small to big, controls described camera and realize focus function.
After good focal length, be gradient to DATA (0) when transducer output D (n) being detected by DATA (max), last T3, and T3 is less than 1/2nd T1, namely judging after to good focal length has the parallel gesture that skids off of finger, and then controls mobile phone photograph.。Namely complete when 140 focusings of described camera, in the 3rd time period T3, when the digital signal that described central processing unit receives from described infrared induction transducer is from large to small trend, controls described camera and realize camera function.
When realizing focusing à preview function, its motion characteristic and identification are referring to embodiment as shown in Figure 6:
The l focus operation: as shown in Figure 6, finger is by far passing nearly induction window (referring to Fig. 2) to infrared induction transducer 111, and infrared induction transducer output D (n) is gradient to DATA (max) by DATA (0), process used time T1;
The l action of taking pictures: as shown in Figure 6, the finger perpendicular distal is from the induction window of infrared induction transducer 111, and infrared induction transducer 111 output D (n) are gradient to DATA (0) by DATA (max), process used time T4;
L and T1 approximate T4;
Therefore, at the mobile phone cam preview mode, be gradient to DATA (max) when transducer output D (n) being detected by DATA (0), last T1, i.e. judgement has the vertical close gesture of finger, controls the hand focusing;
After good focal length, be gradient to DATA (0) when infrared induction transducer 111 output D (n) being detected by DATA (max), last T3, and T3 approximate T1, namely judge point after to good focal length and perpendicular distal from induction region, and then get back to preview mode.Namely complete when described camera focusing, in the 4th time period T4, when the digital signal that described central processing unit receives from described infrared induction transducer is from large to small trend, controls described camera and return to preview mode.And described the 4th time period T4 equals very first time section T1.
In whole process, processor is controlled infrared induction transducer 111 with sampling period T image data; In order to reduce power consumption, infrared LED can be set to impulse ejection, opens infrared LED before each read data, runs through number and closes infrared LED.In addition, the Current Control infrared LED luminous intensity of suitable size is set according to experimental results, infrared induction transducer 111 vertical detection coverages is arranged on 2 centimetres of left and right better.
In sum, method and the mobile device of realizing the camera shutter function by gesture identification provided by the present invention, owing to having adopted when camera function is opened, identify fixedly gesture by infrared induction transducer (also being proximity transducer), the analog camera shutter is controlled camera " focusing à takes pictures ", " focusing à turns back to preview "; It makes mobile phone with camera increase the new function of " focusing à takes pictures ", " focusing à turns back to preview ", provides users with the convenient.
Should be understood that, application of the present invention is not limited to above-mentioned giving an example, and for those of ordinary skills, can be improved according to the above description or conversion, and all these improve and conversion all should belong to the protection range of claims of the present invention.
Claims (9)
1. a method that realizes the camera shutter function by gesture identification, is characterized in that, comprises step:
A, unlatching camera function, setting controls infrared LED by central processing unit and drive circuit sends infrared light;
B, setting receive described infrared light by the infrared induction transducer and are reflected back the reflective infrared light signal of varying strength by different gestures, and the digital signal that this reflective infrared light signal is converted into varying strength sends to described central processing unit;
C, described central processing unit receive the digital signal of described varying strength from the infrared induction transducer, and produce corresponding control signal according to the digital signal of this varying strength, realize corresponding shutter function to control camera.
2. the method that realizes the camera shutter function by gesture identification according to claim 1, is characterized in that, described step C further comprises:
C1, under preview mode, when in very first time section T1, when the digital signal that described central processing unit receives from described infrared induction transducer is the trend of changing from small to big, controls described camera and realize focus function;
C2, wait the second time T 2, described camera focusing is completed;
Described step C also comprises:
C30, complete when described camera focusing, in the 3rd time period T3, when the digital signal that described central processing unit receives from described infrared induction transducer is from large to small trend, controls described camera and realize camera function.
3. the method that realizes the camera shutter function by gesture identification according to claim 2, is characterized in that, described the 3rd time period T3 is less than 1/2nd of very first time section T1.
4. the method that realizes the camera shutter function by gesture identification according to claim 2, is characterized in that, described step C also comprises:
C31, complete when described camera focusing, in the 4th time period T4, when the digital signal that described central processing unit receives from described infrared induction transducer is from large to small trend, controls described camera and return to preview mode.
5. the method that realizes the camera shutter function by gesture identification according to claim 4, is characterized in that, described the 4th time period T4 equals very first time section T1.
6. a mobile device, is characterized in that, comprises infrared LED and drive circuit, infrared induction transducer, central processing unit and camera;
Described infrared LED and drive circuit are connected with described central processing unit, are used for sending infrared light according to the control of described central processing unit;
Described infrared induction transducer is connected with described central processing unit, be used for receiving described infrared light and be reflected back the reflective infrared light signal of varying strength by different gestures, and the digital signal that this reflective infrared light signal is converted into varying strength sends to described central processing unit;
Described central processing unit is used for receiving from described infrared induction transducer the digital signal of described varying strength, and produces corresponding control signal according to the digital signal of this varying strength, realizes corresponding shutter function to control described camera.
7. mobile device according to claim 6, it is characterized in that, infrared LED in described infrared LED and drive circuit and described infrared induction sensor setting be on same plane, and arrange one every tabula rasa between described infrared LED and described infrared induction transducer;
Described central processing unit is connected with described infrared LED and drive circuit by IO mouth control switch; Described camera, infrared induction transducer are connected with described central processing unit by the I2C bus respectively.
8. mobile device according to claim 6, is characterized in that, described camera is the camera with automatic focusing camera function, and described shutter function comprises: focusing à camera function, focusing à turn back to preview function;
Described focusing à camera function specifically comprises: C1, under preview mode, when in very first time section T1, when the digital signal that described central processing unit receives from described infrared induction transducer is the trend of changing from small to big, controls described camera and realize focus function; C2, wait the second time T 2, described camera focusing is completed; C30, complete when described camera focusing, in the 3rd time period T3, when the digital signal that described central processing unit receives from described infrared induction transducer is from large to small trend, controls described camera and realize camera function; And described the 3rd time period T3 is less than 1/2nd of very first time section T1;
Described focusing à specifically comprises when turning back to preview function: C1, under preview mode, when in very first time section T1, when the digital signal that described central processing unit receives from described infrared induction transducer is the trend of changing from small to big, controls described camera and realize focus function; C2, wait the second time T 2, described camera focusing is completed; C31, complete when described camera focusing, in the 4th time period T4, when the digital signal that described central processing unit receives from described infrared induction transducer is from large to small trend, controls described camera and return to preview mode; And described the 4th time period T4 equals very first time section T1.
9. mobile device according to claim 6, is characterized in that, described central processing unit further comprises:
Focusing control unit is used under preview mode, when in very first time section T1, when the digital signal that receives from described infrared induction transducer is the trend of changing from small to big, controls described camera and realizes focus function; And wait for the second time T 2, described camera focusing is completed;
The control unit of taking pictures is used for completing when described camera focusing, in the 3rd time period T3, when the digital signal that receives from described infrared induction transducer is from large to small trend, controls described camera and realizes camera function;
The preview control unit is used for completing when described camera focusing, in the 4th time period T4, when the digital signal that receives from described infrared induction transducer is from large to small trend, controls described camera and returns to preview mode;
Wherein, described the 3rd time period T3 is less than 1/2nd of very first time section T1, and described the 4th time period T4 equals very first time section T1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105442147A CN102055844B (en) | 2010-11-15 | 2010-11-15 | Method for realizing camera shutter function by means of gesture recognition and handset device |
| PCT/CN2011/081750 WO2012065516A1 (en) | 2010-11-15 | 2011-11-03 | Method and mobile phone device for realizing the shutter function of camera by the gesture recognition |
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| CN2010105442147A CN102055844B (en) | 2010-11-15 | 2010-11-15 | Method for realizing camera shutter function by means of gesture recognition and handset device |
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| CN102055844A CN102055844A (en) | 2011-05-11 |
| CN102055844B true CN102055844B (en) | 2013-05-15 |
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