CN105894497A - Camera-based key detection method and system, and mobile terminal - Google Patents
Camera-based key detection method and system, and mobile terminal Download PDFInfo
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- CN105894497A CN105894497A CN201610175023.5A CN201610175023A CN105894497A CN 105894497 A CN105894497 A CN 105894497A CN 201610175023 A CN201610175023 A CN 201610175023A CN 105894497 A CN105894497 A CN 105894497A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10016—Video; Image sequence
Abstract
The invention discloses a camera-based key detection method and system, and a mobile terminal. The method comprises: image data sensed by a camera are obtained; when all pixels in a first area in one frame of image are black, a first state is determined; when all pixels in a second area in one frame of image are black, a second state is determined; when no pixel in the first area is black, a third state is determined; if changing from the third state to the first state and then from the first state to the second state is detected, a state of a key changes from releasing to pressing; if changing from the second state to the first state and then from the first state to the third state is detected, the state of the key changes from pressing to releasing. According to the invention, no additional device is needed based on the existing technology and a camera that is configured at all mobile terminals is used as a simulated key, thereby bringing convenience for a user. Moreover, the operation becomes convenient and rapid. The structure is simple; the operation can be realized conveniently and rapidly; and the realization cost of the key is reduced.
Description
Technical field
The present invention relates to technical field of mobile terminals, a kind of key detecting method based on photographic head, system and mobile terminal.
Background technology
Although the most input of mobile terminal at present is realized by touch screen, but in the terminal, the most still some function is completed by physical button, such as volume key；And in the full epoch touched, physical button many times seems unnecessary, particularly some being pursued to the manufacturer of outward appearance, physical button often affects the appearance design of their product.
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, for the drawbacks described above of prior art, it is provided that a kind of key detecting method based on photographic head, system and mobile terminal.The present invention is on the basis of existing technology without additionally adding device, only the photographic head being all equipped with on current all mobile terminals need to be used to be used as analogue-key, use lively, image, thus provide the user conveniently, also for the thinking that the development offer without button mobile terminal is new, and faster and more convenient operation.
It is as follows that the present invention solves the technical scheme that technical problem used:
A kind of key detecting method based on photographic head, wherein, including:
A, startup photographic head, arrange the frame per second of photographic head output image；
The view data that B, acquisition photographic head are sensed；When all pixels of first area are black in a two field picture, it is designated as the first state；When all pixels of second area are black in a two field picture, it is designated as the second state；When all pixels of first area are not black in a two field picture, it is designated as the third state；
C, if be detected that become the first state from the third state, is become the second state from the first state the most again, then it is assumed that button is become pressing from release；
If be detected that become the first state from the second state, become the third state from the first state the most again, then it is assumed that button from press become release.
Described key detecting method based on photographic head, wherein, described first area overlaps with the geometric center of second area, and the pixel that described first area is comprised is less than the pixel that second area is comprised.
Described key detecting method based on photographic head, wherein, described first state is finger or other objects touch photographic head center, described second state is finger or other objects continue to press down on photographic head center on the basis of the first state, and the explanation of the described third state does not has finger or other objects to touch photographic head center.
Described key detecting method based on photographic head, wherein, described judges whether pixel is that black is: when pixel data format is rgb format, if the R of pixel is 0, G is 0, B be 0 pixel be black, otherwise pixel is not black.
Described key detecting method based on photographic head, wherein, change between the various states being previously mentioned in described step C is all continuous print, it is described if be detected that become the first state from the second state and be: the first two field picture testing result is the second state, second two field picture testing result is the second state, 3rd two field picture testing result is the second state, and the 4th two field picture testing result is the first state.
Described key detecting method based on photographic head, wherein, the frame per second arranging photographic head output image in described step A is that 30 frames are per second.
Described key detecting method based on photographic head, wherein, described first area, second area be shaped as rectangle or circle.
A kind of button detecting system based on photographic head, wherein, including:
Photographic head starts module, is used for starting photographic head, arranges the frame per second of photographic head output image；
Image Acquisition and condition judgment module, for obtaining the view data that photographic head is sensed；When all pixels of first area are black in a two field picture, it is designated as the first state；When all pixels of second area are black in a two field picture, it is designated as the second state；When all pixels of first area are not black in a two field picture, it is designated as the third state；
Button detection module, for if be detected that become the first state from the third state, is become the second state from the first state the most again, then it is assumed that button is become pressing from release；If be detected that become the first state from the second state, become the third state from the first state the most again, then it is assumed that button from press become release.
Described button detecting system based on photographic head, wherein,
Described first area overlaps with the geometric center of second area, and the pixel that described first area is comprised is less than the pixel that second area is comprised；
Described first state is finger or other objects touch photographic head center, described second state is finger or other objects continue to press down on photographic head center on the basis of the first state, and the explanation of the described third state does not has finger or other objects to touch photographic head center；
Described Image Acquisition and condition judgment module judge whether pixel is that black is: when pixel data format is rgb format, if the R of pixel is 0, G is 0, B be 0 pixel be black, otherwise pixel is not black；
Change between the various states that described button detection module is previously mentioned is all continuous print, it is described if be detected that become the first state from the second state and be: the first two field picture testing result is the second state, second two field picture testing result is the second state, 3rd two field picture testing result is the second state, and the 4th two field picture testing result is the first state.
A kind of mobile terminal, including terminal body, is arranged on the photographic head on described terminal body, and wherein, described mobile terminal uses key detecting method based on photographic head described in any of the above-described item to realize Home key.
Beneficial effect: key detecting method based on photographic head provided by the present invention, system and mobile terminal；Compared to prior art, the method for the invention is by obtaining the view data that photographic head is sensed；When all pixels of first area are black in a two field picture, it is designated as the first state；When all pixels of second area are black in a two field picture, it is designated as the second state；When all pixels of first area are not black in a two field picture, it is designated as the third state；If be detected that become the first state from the third state, become the second state from the first state the most again, then it is assumed that button is become pressing from release；If be detected that become the first state from the second state, become the third state from the first state the most again, then it is assumed that button from press become release.The present invention, on the basis of existing technology without additionally adding device, only need to use the photographic head being equipped with on current all mobile terminals to be used as analogue-key, thus provide the user conveniently, and faster and more convenient operation；Present configuration is simple, convenient to operation, and reduce button realize cost.
Accompanying drawing explanation
Fig. 1 is the flow chart of the preferred embodiment of present invention key detecting method based on photographic head.
Fig. 2 is that the region of a two field picture of the preferred embodiment of present invention key detecting method based on photographic head divides schematic diagram.
Fig. 3 is the functional schematic block diagram of the preferred embodiment of present invention button based on photographic head detecting system.
Detailed description of the invention
For making the purpose of the present invention, technical scheme and advantage clearer, clear and definite, the present invention is described in more detail for the embodiment that develops simultaneously referring to the drawings.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Refer to the flow chart that Fig. 1, Fig. 1 are the preferred embodiments of present invention key detecting method based on photographic head.As it is shown in figure 1, the key detecting method based on photographic head described in the present embodiment, comprise the following steps:
S100, starts photographic head, arranges the frame per second of photographic head output image.
Wherein, described frame per second, need to arrange slightly higher, if the relatively low meeting of frame per second makes button of the present invention, detection reaction is relatively slow, it is preferred that arranging frame per second is 30fps；Here fps is the meaning that frame is per second.
S200, obtains the view data that photographic head is sensed；When all pixels of first area are black in a two field picture, it is designated as the first state；When all pixels of second area are black in a two field picture, it is designated as the second state；When all pixels of first area are not black in a two field picture, it is designated as the third state.
Wherein, described first area overlaps with the geometric center of second area, and the pixel that first area is comprised is less than the pixel that second area is comprised.Refer to Fig. 2, Fig. 2 show first area and the position view of second area in one embodiment of the invention one two field picture 10, preferably the geometric center of first area and second area also geometric center with a two field picture overlaps, Fig. 1 first area is rectangle GELN, second area is rectangular V QRM, Fig. 2 is only an embodiment, and first area, second area shape can also be other, such as circular；Illustrate during the first state that finger (or other objects) touches photographic head center, second state description finger (or other objects) continues to press down on photographic head center on the basis of the first state, and third state explanation does not has finger (or other objects) to touch photographic head center.
Wherein, described judge whether pixel is that black is: when pixel data format is rgb format, if the R of pixel is 0, G is 0, B be 0 pixel be black, otherwise pixel is not black.
S300, if be detected that become the first state from the third state, is become the second state from the first state the most again, then it is assumed that button is become pressing from release；If be detected that become the first state from the second state, become the third state from the first state the most again, then it is assumed that button from press become release.
Wherein, change between the various states being previously mentioned in step S300 is all continuous print, than as mentioned " if be detected that being become the first state from the second state ", can be the first two field picture testing result be the second state, second two field picture testing result is the second state, 3rd two field picture testing result is the second state, and the 4th two field picture testing result is the first state；But cannot be the first two field picture testing result be the second state, the second two field picture testing result is the third state, and the 3rd two field picture testing result is the first state.
Wherein, in step S300, detect and become the second state from the third state, the process that the second state simulation one-touch is pressed is become the most again from the first state, the most do not press, be touched to button (photographic head), entered, to button (photographic head), the process pressed.Detect and become the first state from the second state from detecting, become the third state from the first state the most again and simulate the process of one-touch release, button (photographic head) is pressed the most from the beginning, the area touched to button (photographic head) diminishes, the process being released to button (photographic head).
Based on said method embodiment, present invention also offers a kind of button detecting system based on photographic head, as it is shown on figure 3, described system includes:
Photographic head starts module 310, is used for starting photographic head, arranges the frame per second of photographic head output image；As detailed above.
Image Acquisition and condition judgment module 320, for obtaining the view data that photographic head is sensed；When all pixels of first area are black in a two field picture, it is designated as the first state；When all pixels of second area are black in a two field picture, it is designated as the second state；When all pixels of first area are not black in a two field picture, it is designated as the third state；As detailed above.
Button detection module 330, for if be detected that become the first state from the third state, is become the second state from the first state the most again, then it is assumed that button is become pressing from release；If be detected that become the first state from the second state, become the third state from the first state the most again, then it is assumed that button from press become release；As detailed above.
Further, described button detecting system based on photographic head, wherein,
Described first area overlaps with the geometric center of second area, and the pixel that described first area is comprised is less than the pixel that second area is comprised；As detailed above.
Described first state is finger or other objects touch photographic head center, described second state is finger or other objects continue to press down on photographic head center on the basis of the first state, and the explanation of the described third state does not has finger or other objects to touch photographic head center；As detailed above.
Described Image Acquisition and condition judgment module judge whether pixel is that black is: when pixel data format is rgb format, if the R of pixel is 0, G is 0, B be 0 pixel be black, otherwise pixel is not black；As detailed above.
Change between the various states that described button detection module is previously mentioned is all continuous print, it is described if be detected that become the first state from the second state and be: the first two field picture testing result is the second state, second two field picture testing result is the second state, 3rd two field picture testing result is the second state, and the 4th two field picture testing result is the first state；As detailed above.
Based on above-described embodiment, present invention also offers a kind of mobile terminal embodiment, the mobile terminal of the present embodiment includes terminal body, it is arranged on the photographic head on described terminal body, wherein, described mobile terminal uses key detecting method based on photographic head described in any of the above-described embodiment to realize Home key.
Therefore, the mobile terminal that the method for the embodiment of the present invention is realized, on the basis of existing technology without additionally adding device, only the photographic head being all equipped with on current all mobile terminals need to be used to be used as analogue-key, use lively, image, thus provide the user conveniently, also for the thinking that the development offer without button mobile terminal is new, and faster and more convenient operation.
In sum: key detecting method based on photographic head provided by the present invention, system and mobile terminal；Compared to prior art, the method for the invention is by obtaining the view data that photographic head is sensed；When all pixels of first area are black in a two field picture, it is designated as the first state；When all pixels of second area are black in a two field picture, it is designated as the second state；When all pixels of first area are not black in a two field picture, it is designated as the third state；If be detected that become the first state from the third state, become the second state from the first state the most again, then it is assumed that button is become pressing from release；If be detected that become the first state from the second state, become the third state from the first state the most again, then it is assumed that button from press become release.The present invention, on the basis of existing technology without additionally adding device, only need to use the photographic head being equipped with on current all mobile terminals to be used as analogue-key, thus provide the user conveniently, and faster and more convenient operation；Present configuration is simple, convenient to operation, and reduce button realize cost.
Certainly, one of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, can be by computer program to instruct related hardware (such as processor, controller etc.) complete, described program can be stored in the storage medium of an embodied on computer readable, and this program can include upon execution such as the flow process of above-mentioned each method embodiment.Wherein said storage medium can be memorizer, magnetic disc, CD etc..
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, all these modifications and variations all should belong to the protection domain of claims of the present invention.
Claims (10)
1. a key detecting method based on photographic head, it is characterised in that including:
A, startup photographic head, arrange the frame per second of photographic head output image；
The view data that B, acquisition photographic head are sensed；When all pixels of first area are black in a two field picture, it is designated as the first state；When all pixels of second area are black in a two field picture, it is designated as the second state；When all pixels of first area are not black in a two field picture, it is designated as the third state；
C, if be detected that become the first state from the third state, is become the second state from the first state the most again, then it is assumed that button is become pressing from release；
If be detected that become the first state from the second state, become the third state from the first state the most again, then it is assumed that button from press become release.
Key detecting method based on photographic head the most according to claim 1, it is characterised in that described first area overlaps with the geometric center of second area, and the pixel that the pixel that comprised of described first area is comprised less than second area.
Key detecting method based on photographic head the most according to claim 1, it is characterized in that, described first state is finger or other objects touch photographic head center, described second state is finger or other objects continue to press down on photographic head center on the basis of the first state, and the explanation of the described third state does not has finger or other objects to touch photographic head center.
Key detecting method based on photographic head the most according to claim 1, it is characterised in that described judge whether pixel is that black is: when pixel data format is rgb format, if the R of pixel is 0, G is 0, B be 0 pixel be black, otherwise pixel is not black.
Key detecting method based on photographic head the most according to claim 1, it is characterized in that, change between the various states being previously mentioned in described step C is all continuous print, it is described if be detected that become the first state from the second state and be: the first two field picture testing result is the second state, second two field picture testing result is the second state, 3rd two field picture testing result is the second state, and the 4th two field picture testing result is the first state.
Key detecting method based on photographic head the most according to claim 1, it is characterised in that the frame per second arranging photographic head output image in described step A is that 30 frames are per second.
Key detecting method based on photographic head the most according to claim 1, it is characterised in that described first area, second area be shaped as rectangle or circle.
8. a button detecting system based on photographic head, it is characterised in that including:
Photographic head starts module, is used for starting photographic head, arranges the frame per second of photographic head output image；
Image Acquisition and condition judgment module, for obtaining the view data that photographic head is sensed；When all pixels of first area are black in a two field picture, it is designated as the first state；When all pixels of second area are black in a two field picture, it is designated as the second state；When all pixels of first area are not black in a two field picture, it is designated as the third state；
Button detection module, for if be detected that become the first state from the third state, is become the second state from the first state the most again, then it is assumed that button is become pressing from release；If be detected that become the first state from the second state, become the third state from the first state the most again, then it is assumed that button from press become release.
9. want the button detecting system based on photographic head described in 8 according to right, it is characterised in that
Described first area overlaps with the geometric center of second area, and the pixel that described first area is comprised is less than the pixel that second area is comprised；
Described first state is finger or other objects touch photographic head center, described second state is finger or other objects continue to press down on photographic head center on the basis of the first state, and the explanation of the described third state does not has finger or other objects to touch photographic head center；
Described Image Acquisition and condition judgment module judge whether pixel is that black is: when pixel data format is rgb format, if the R of pixel is 0, G is 0, B be 0 pixel be black, otherwise pixel is not black；
Change between the various states that described button detection module is previously mentioned is all continuous print, it is described if be detected that become the first state from the second state and be: the first two field picture testing result is the second state, second two field picture testing result is the second state, 3rd two field picture testing result is the second state, and the 4th two field picture testing result is the first state.
10. a mobile terminal, including terminal body, is arranged on the photographic head on described terminal body, it is characterised in that described mobile terminal uses key detecting method based on photographic head described in any one of claim 1-7 to realize Home key.
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| CN201610175023.5A CN105894497A (en) | 2016-03-25 | 2016-03-25 | Camera-based key detection method and system, and mobile terminal |
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Application publication date: 20160824 |