CN103092524B - A kind of method and mobile terminal being realized sectional drawing by touch-screen - Google Patents
A kind of method and mobile terminal being realized sectional drawing by touch-screen Download PDFInfo
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Abstract
Realized method and the mobile terminal of sectional drawing by touch-screen, described method comprises: start local screen's sectional drawing function, intercepts full-screen image and is initialization constituency and shows; Catch the sliding trace that also recording user inputs in initialization constituency; Identify that described sliding trace comprises a closed curve, determine that the region that this closed curve surrounds is constituency, or identify that described sliding trace is an open curve, and initialization electoral district division is at least two regions by this sliding trace, determines that a region is constituency according to the selection instruction of user; Scope corresponding with constituency in full-screen image is saved as cut-away view picture.Utilize user of the present invention can intercept arbitrarily shaped image by instant communication client and send to other instant communication clients, substantially increase the dirigibility in the practicality of IM software and sectional drawing process, improve Consumer's Experience.
Description
Technical field
The present invention relates to technical field of mobile terminals, particularly relate to a kind of method and the mobile terminal that are realized sectional drawing by touch-screen.
Background technology
At present, the terminal device application being provided with touch-screen is general, such as, has the mobile phone of touch-screen, panel computer, notebook computer, desktop computer, or personal digital assistant, etc.Along with the now development of science and technology and the demand of user, existing most of IM(instant messaging, the abbreviation of Instant Messenger) client software (as QQ, Fetion) all has the function of sectional drawing.But current touch-screen equipment is as smart mobile phone, generally merely provide the function intercepting current whole screen, and the image transmission intercepting whole screen-picture can make transmitted traffic excessive, and certain a part of picture in the just screen sometimes required for user, therefore certain wasting of resources can be caused, and often the effect desired by user can not be reached.
On the other hand, existing screen regional sectional drawing generally only provides the screenshot box of the regular shapes such as rectangle, and by defining the shape to angle point determination sectional drawing of screenshot box, sectional drawing mode is comparatively single, underaction.
Summary of the invention
In order to overcome the weak point of the prior art of above-mentioned indication, the invention provides a kind of method and the mobile terminal that are realized sectional drawing by touch-screen, arbitrarily shaped image can be intercepted by instant communication client to make user and send to other instant communication clients, improve Consumer's Experience.
The present invention is achieved by the following technical solutions:
Realized a method for sectional drawing by touch-screen, be applied to mobile terminal, its step comprises:
A, startup local screen sectional drawing function, intercept full-screen image and be initialization constituency and show;
B, to catch and the sliding trace that inputs in initialization constituency of recording user;
C, identify that described sliding trace comprises a closed curve, determine that the region that this closed curve surrounds is constituency, or, identify that described sliding trace is an open curve, and initialization electoral district division is at least two regions by this sliding trace, determine that a region is constituency according to the selection instruction of user;
D, scope corresponding with constituency in full-screen image is saved as cut-away view picture.
Further, in step c, identify that described sliding trace comprises a closed curve, refer to and detect in sliding trace and comprise two identical point coordinate.
In described step c, initialization electoral district division is that at least two regions refer to that described sliding trace is by crossing with the border in initialization constituency by sliding trace, and this border forms at least two closed curves jointly.
After described step c determines constituency, steps d also comprises before preserving cut-away view picture: step c0, mated with the regular shape being pre-stored in mobile terminal in described constituency, and the shape in matching constituency is the regular shape matched; If it fails to match, then to the smoothing process of the outline in described constituency.
Mated with the regular shape being pre-stored in mobile terminal in described constituency in step c0, the shape in matching constituency is that the regular shape matched comprises:
C1, the vertex number reading constituency to be matched and center point coordinate;
C2, choose the prestore regular shape identical with the vertex number in constituency to be matched as template;
Described in c3, translation, template makes the point coincides in the central point of this template and constituency to be matched, described template is rotated, convergent-divergent makes that this template is identical with direction, constituency to be matched, the variance of distance between respective vertices is minimum, or make that this template is identical with direction, constituency to be matched, the variance of some random pickup points in template and the closest approach distance between constituency to be matched is minimum;
C4, when this minimum variance is less than a pre-set threshold value, then judge constituency to be matched and template matches success;
C5, shape of template describedly to rotate through step c3, after convergent-divergent are as the constituency shape after matching.
The regular shape being pre-stored in mobile terminal in described step c0 comprises rectangle, circle, ellipse, triangle, trapezoidal and regular polygon.
Present invention also offers a kind of mobile terminal being realized sectional drawing by touch-screen, comprising:
Start unit, for starting local screen's sectional drawing function, intercepting full-screen image and is initialization constituency and shows;
Track capturing unit, for catching the sliding trace that also recording user inputs in initialization constituency;
Constituency determining unit, for identifying that described sliding trace comprises a closed curve, determine that the region that this closed curve surrounds is constituency, or identify that described sliding trace is an open curve, and initialization electoral district division is at least two regions by this sliding trace, determine that a region is constituency according to the selection instruction of user;
Image editing unit, for saving as cut-away view picture by scope corresponding with constituency in full-screen image.
Further, described mobile terminal also comprises a constituency post-processing unit, and for being mated with the regular shape being pre-stored in mobile terminal in described constituency, the shape in matching constituency is the regular shape matched; If it fails to match, then to the smoothing process of the outline in described constituency.
Compared with prior art, screenshot method provided by the invention and terminal achieve the free sectional drawing of arbitrarily shaped image in screenshot capture process, and providing personalized editting function user for the image in constituency and constituency can the arbitrary portion of screen printing image, operating gesture is simple, and provide the form fit in constituency or level and smooth aftertreatment, substantially increase the dirigibility in the practicality of IM software and sectional drawing process, user can intercept arbitrarily shaped image by instant communication client and send to other instant communication clients, improves Consumer's Experience.
Accompanying drawing explanation
Accompanying drawing 1 is the smart mobile phone of the embodiment of the present invention realizes the method for sectional drawing realization flow schematic diagram by touch-screen.
Embodiment
For the ease of the understanding of those skilled in the art, below in conjunction with accompanying drawing, the invention will be further described.
Realized a method for sectional drawing by touch-screen, be applied to mobile terminal.Mobile terminal of the present invention comprises the smart electronics terminal such as smart mobile phone, panel computer with touch-screen.The step of described method comprises:
A, startup local screen sectional drawing function, intercept full-screen image and be initialization constituency and show;
B, to catch and the sliding trace that inputs in initialization constituency of recording user;
C, identify that described sliding trace comprises a closed curve, determine that the region that this closed curve surrounds is constituency, or identify that described sliding trace is an open curve, and initialization electoral district division is at least two regions by this sliding trace, determines that a region is constituency according to the selection instruction of user;
D, scope corresponding with constituency in full-screen image is saved as cut-away view picture.
Further, described step c identifies that described sliding trace comprises a closed curve, refers to detect in sliding trace and comprise two identical point coordinate.In actual use, user can input a closed curve by slide on the touchscreen.When after system identification closed curve, the image within this closed curve will be intercepted.Open curve is then contrary with closed curve, does not comprise the point coordinate that any two are identical.
Or in other embodiments of the invention, described step c identifies that described sliding trace comprises a closed curve, refers to and detects that the starting point coordinate of described sliding trace is identical with terminating point coordinate.
Initialization electoral district division is that at least two regions refer to that sliding trace is by crossing with the border in initialization constituency (namely the border in sliding trace and initialization constituency has two or more intersection points) by the sliding trace in an open curve shape in described step c, jointly form at least two closed curves with this border, thus be at least two regions by initialization electoral district division.When the sliding trace of user's input and the border in initialization constituency are intersected, such as standardized road straight line in the middle of touch-screen, the border in the meeting of this straight line and initialization constituency, namely the edge of full-screen image forms two closed curves, at this moment judges that the image within which closed curve intercepts required for user with regard to needing.Preferably disposal route is, variant region makes a check mark respectively, is such as labeled as A and B respectively, the required region selecting to intercept of prompting user.User is by tapping the region of required intercepting on the touchscreen or tapping identification options, according to the selection instruction of user, system determines that the region of a certain mark is constituency.
Further, after described step c determines constituency, steps d also comprises before preserving cut-away view picture: step c0, mated with the regular shape being pre-stored in mobile terminal in described constituency, and the shape in matching constituency is the regular shape matched; If it fails to match, then to the smoothing process of the outline in described constituency.
Further, described constituency is mated with the regular shape being pre-stored in mobile terminal by step c0, and the shape in matching constituency is that the regular shape matched comprises:
C1, the vertex number reading constituency to be matched and center point coordinate;
C2, choose the prestore regular shape identical with the vertex number in constituency to be matched as template;
Described in c3, translation, template makes the point coincides in the central point of this template and constituency to be matched, described template is rotated, convergent-divergent makes that this template is identical with direction, constituency to be matched, the variance of distance between respective vertices is minimum, or make that this template is identical with direction, constituency to be matched, the variance of some random pickup points in template and the closest approach distance between constituency to be matched is minimum;
C4, when this minimum variance is less than a pre-set threshold value, then judge constituency to be matched and template matches success;
C5, shape of template describedly to rotate through step c3, after convergent-divergent are as the constituency shape after matching.
When this minimum variance is more than or equal to a pre-set threshold value in described step c4, then judge constituency to be matched and template matches failure, to the smoothing process of the outline in described constituency, existing curve smoothing algorithm can be adopted, comprise cubic spline function, lagrange polynomial, BEZIER smoothing algorithm, PAEK exponential polynomials smoothing algorithm etc., be widely used in the image procossing of computing machine, do not repeated further at this.
For the shape with summit, as triangle, rectangle, step c3 can rotate described template, convergent-divergent makes that this template is identical with direction, constituency to be matched, the variance of distance between respective vertices is minimum; And for without summit shape, as circle, can rotate described template, convergent-divergent makes that this template is identical with direction, constituency to be matched, the variance of some random pickup points in template and the closest approach distance between constituency to be matched is minimum.Some random pickup are herein counted out and can be arranged according to the actual requirements, are ten as being fixedly installed.
In another embodiment of the invention, step c3 can rotate described template, convergent-divergent makes that this template is identical with direction, constituency to be matched, distance sum between respective vertices is minimum, and when this distance sum minimum value is less than a pre-set threshold value, judge constituency to be matched and template matches success, using the shape of template after this step c3 rotation, convergent-divergent as the constituency shape after matching.And for without summit shape, can rotate described template, convergent-divergent makes that this template is identical with direction, constituency to be matched, some random pickup points in template and the closest approach distance sum between constituency to be matched are minimum.
The regular shape being pre-stored in mobile terminal in described step c0 comprises rectangle, circle, ellipse, triangle, trapezoidal and regular polygon etc.; also can comprise other self-defined shapes; all belong to the present invention conceive under technical scheme, should be included in protection scope of the present invention.
In actual applications, user can unrestricted choice whether to the smoothing process in constituency or process of fitting treatment.Such as arrange a free sectional drawing pattern, in this mode, the closed-curve shape that user inputs no longer through aftertreatment, and directly intercepts the image within scope corresponding with constituency in full-screen image.If close free sectional drawing pattern, then above-mentioned constituency and the matching process of the regular shape being pre-stored in mobile terminal is utilized to judge the shapes such as the whether similar rectangle of the shape in constituency, circle, triangle.If judge the similar rectangle of the shape in constituency by analysis, then system utilizes the shape in above-mentioned matching constituency to be the method for the regular shape matched is immediate rectangle by constituency shape adjustments, with this rectangle for intercepting the image within scope corresponding with constituency in full-screen image through the constituency of aftertreatment, then cut-away view is as rectangular.If when closing free sectional drawing pattern, the shape in constituency is not all mated, then only to the smoothing process in this constituency through the regular shape judged and system prestores.
When wanting a certain topography in screen printing as user, a closed curve can be drawn on the touchscreen.System background judges whether local screen's sectional drawing function is opened, if do not open, then and undo; If open, then judge after determining constituency whether free sectional drawing pattern opens, then intercept topography and be presented in current interface.The operations such as the picture that can intercept out this is preserved, share.Preserve if select, then this pictures position of being just saved on mobile terminal acquiescence or specifying; Share if select, then can select to share the social network sites such as microblogging, QQ space, note, bluetooth etc. can also be used to be sent to other user terminals.
Because user may intercept picture at any interface at any time, because the comparatively convenient and swift mode that need arrange opens or closes local sectional drawing function, such as the shortcut of opening/closing local sectional drawing function is arranged in screen drop-down menu; Or utilize acceleration transducer, when recognizing user in setting-up time during double click mobile phone side, opening/closing local sectional drawing function.
Particularly, as shown in Figure 1, for smart mobile phone, present invention also offers a kind of realization flow being realized the method for sectional drawing by touch-screen of smart mobile phone of embodiment, its step comprises:
001, local screen's sectional drawing function is started;
002, intercept full-screen image be initialization constituency and show;
003, user inputs sliding trace in initialization constituency;
004, judge whether described sliding trace comprises closed curve, if so, perform step 005, otherwise, proceed to step 006;
005, determine that the region that this closed curve surrounds is constituency, continue step 009;
006, judge that whether initialization electoral district division is at least two regions by sliding trace, if so, perform step 007, otherwise proceed to step 008;
007, the instruction of user's input selection determines that wherein a region is constituency, continues step 009;
008, the operation inputting sliding trace is invalid;
009, judge whether free sectional drawing pattern opens, if so, perform step 014, otherwise, perform step 010;
010, described constituency is mated with the regular shape being pre-stored in mobile terminal;
011, whether the match is successful, if so, performs step 012, otherwise perform step 013;
012, the shape in matching constituency is the regular shape matched, and continues step 014;
013, to the smoothing process of the outline in described constituency, step 014 is continued;
014, scope corresponding with constituency in full-screen image is saved as cut-away view picture.
Present invention also offers a kind of mobile terminal being realized sectional drawing by touch-screen, comprising:
Start unit, for starting local screen's sectional drawing function, intercepting full-screen image and is initialization constituency and shows;
Track capturing unit, for catching the sliding trace that also recording user inputs in initialization constituency;
Constituency determining unit, for identifying that described sliding trace comprises a closed curve, determine that the region that this closed curve surrounds is constituency, or identify that described sliding trace is an open curve, and initialization electoral district division is at least two regions by this sliding trace, determine that a region is constituency according to the selection instruction of user;
Image editing unit, for saving as cut-away view picture by scope corresponding with constituency in full-screen image.
Preferably, described constituency determining unit, for identifying that described sliding trace comprises a closed curve, refers to whether comprise two identical point coordinate for detecting in sliding trace.
Initialization electoral district division is that at least two regions refer to that this sliding trace is by crossing with the border in initialization constituency by the sliding trace of what described constituency determining unit identified an is open curve, thus and this border jointly form at least two closed curves.
Further, described mobile terminal also comprises a constituency post-processing unit, and for being mated with the regular shape being pre-stored in mobile terminal in described constituency, the shape in matching constituency is the regular shape matched; If it fails to match, then to the smoothing process of the outline in described constituency.
In the present embodiment, described constituency post-processing unit comprises:
Constituency reading unit, for reading vertex number and the center point coordinate in constituency to be matched;
Template chooses unit, for choosing the prestore regular shape identical with the vertex number in constituency to be matched as template;
Template adjustment unit, the point coincides in the central point of this template and constituency to be matched is made for template described in translation, described template is rotated, convergent-divergent makes that this template is identical with direction, constituency to be matched, the variance of distance between respective vertices is minimum, or make that this template is identical with direction, constituency to be matched, the variance of some random pickup points in template and the closest approach distance between constituency to be matched is minimum;
Template matches unit, for being less than a pre-set threshold value when this minimum variance, then judges constituency to be matched and template matches success;
Constituency fitting unit, for using the described shape of template through rotating, after convergent-divergent as the constituency shape after matching.
In the present invention, the regular shape being pre-stored in described mobile terminal comprises rectangle, circle, ellipse, triangle, trapezoidal and regular polygon etc., also can comprise other self-defined shapes.
Above content is in conjunction with concrete optimal way further description made for the present invention, should not assert that specific embodiment of the invention is confined to above explanation.For those skilled in the art, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, within the protection domain that the claim that all should be considered as being submitted to by the present invention is determined.
Claims (5)
1. realized a method for sectional drawing by touch-screen, be applied to mobile terminal, its step comprises:
A, startup local screen sectional drawing function, intercept full-screen image and be initialization constituency and show;
B, to catch and the sliding trace that inputs in initialization constituency of recording user;
C, identify that described sliding trace comprises a closed curve, determine that the region that this closed curve surrounds is constituency, or,
Identify that described sliding trace is an open curve, and initialization electoral district division is at least two regions by this sliding trace, determines that a region is constituency according to the selection instruction of user;
D, scope corresponding with described constituency in full-screen image is saved as cut-away view picture;
After described step c determines constituency, steps d also comprises before preserving cut-away view picture: step c0, mated with the regular shape being pre-stored in mobile terminal in described constituency, and the shape in matching constituency is the regular shape matched; If it fails to match, then to the smoothing process of the outline in described constituency;
Described constituency is mated with the regular shape being pre-stored in mobile terminal by described step c0, and the shape in matching constituency is that the regular shape matched comprises:
C1, the vertex number reading constituency to be matched and center point coordinate;
C2, choose the prestore regular shape identical with the vertex number in constituency to be matched as template;
Described in c3, translation, template makes the point coincides in the central point of this template and constituency to be matched, described template is rotated, convergent-divergent makes that this template is identical with direction, constituency to be matched, the variance of distance between respective vertices is minimum, or make that this template is identical with direction, constituency to be matched, the variance of some random pickup points in template and the closest approach distance between constituency to be matched is minimum;
C4, when this minimum variance is less than a pre-set threshold value, then judge constituency to be matched and template matches success;
C5, shape of template describedly to rotate through step c3, after convergent-divergent are as the constituency shape after matching.
2. the method being realized sectional drawing by touch-screen according to claim 1, be is characterized in that, identifies that described sliding trace comprises a closed curve in step c, refers to detect in sliding trace and comprise two identical point coordinate.
3. the method being realized sectional drawing by touch-screen according to claim 2, it is characterized in that: in described step c, initialization electoral district division is that at least two regions refer to that sliding trace is by crossing with the border in initialization constituency by sliding trace, and this border forms at least two closed curves jointly.
4. the method being realized sectional drawing by touch-screen according to any one of claim 1 to 3, be is characterized in that: the regular shape being pre-stored in mobile terminal in described step c0 comprises rectangle, circle, ellipse, triangle, trapezoidal and regular polygon.
5. realized a mobile terminal for sectional drawing by touch-screen, it is characterized in that, comprising:
Start unit, for starting local screen's sectional drawing function, intercepting full-screen image and is initialization constituency and shows;
Track capturing unit, for catching the sliding trace that also recording user inputs in initialization constituency;
Constituency determining unit, for identifying that described sliding trace comprises a closed curve, determine that the region that this closed curve surrounds is constituency, or identify that described sliding trace is an open curve, and initialization electoral district division is at least two regions by this sliding trace, determine that a region is constituency according to the selection instruction of user;
Image editing unit, for saving as cut-away view picture by scope corresponding with constituency in full-screen image;
Constituency post-processing unit, for being mated with the regular shape being pre-stored in mobile terminal in described constituency, the shape in matching constituency is the regular shape matched; If it fails to match, then to the smoothing process of the outline in described constituency;
Shape matching unit, for reading vertex number and the center point coordinate in constituency to be matched, choose the prestore regular shape identical with the vertex number in constituency to be matched as template, template described in translation makes the point coincides in the central point of this template and constituency to be matched, described template is rotated, convergent-divergent makes this template identical with direction, constituency to be matched, the variance of the distance between respective vertices is minimum, or make this template identical with direction, constituency to be matched, the variance of the some random pickup points in template and the closest approach distance between constituency to be matched is minimum, when this minimum variance is less than a pre-set threshold value, then judge constituency to be matched and template matches success, with through rotate, shape of template after convergent-divergent is as the constituency shape after matching.
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| CN114885140B (en) * | 2022-05-25 | 2023-05-26 | 华中科技大学 | Multi-screen spliced immersion type projection picture processing method and system |
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