CN102331909A - Method for realizing manual annotation in electronic system - Google Patents
Method for realizing manual annotation in electronic system Download PDFInfo
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- CN102331909A CN102331909A CN201110279316A CN201110279316A CN102331909A CN 102331909 A CN102331909 A CN 102331909A CN 201110279316 A CN201110279316 A CN 201110279316A CN 201110279316 A CN201110279316 A CN 201110279316A CN 102331909 A CN102331909 A CN 102331909A
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Abstract
The invention discloses a method for realizing manual annotation in an electronic system and is characterized in that the method comprises the following steps of: a, arranging a camera and a set writing plane, and determining a writing area according to a principle that the visual range of the camera is within the writing plane; b, putting a piece of writing paper in the writing area, and manually annotating on the writing paper with a common pen by a user who faces to the camera; c, photographing the writing paper by the camera, and screening and processing the photographed image by a processing chip; and d, performing perspective correction on the initially annotated image by the processing chip to generate a digitalized final annotation image. The method for realizing the manual annotation in the electronic system has the advantages that the manual annotation in the electronic system can be effectively realized, the hardware cost for the manual annotation is reduced, a real writing experience can be supplied to a user, and the writing quality of the user is improved; and therefore, the quality of the manual annotation in the electronic system is improved.
Description
Technical field
The present invention relates to a kind of hand annotation is converted into the method for e-file, be specifically related to a kind of method that realizes hand annotation through the electronic system of camera.
Background technology
At present, the hand annotation of electronic system is meant that the user can be input to own hand-written person's handwriting in this electronic system and shows or store.Electronic system can include, but not limited to PC, mobile phone, consumer panel computer, study with panel computer, the special-purpose panel computer of industry, e-book etc.Existing electronic system all uses the form of handtailor pen to realize hand annotation.Handtailor pen is to be used for replacing true pen to write sensation really to the user; For example use and have pointed form of a stroke or a combination of strokes object and on touch-screen, contact and move and realize hand annotation; Or utilize track that the pen-like object based on mouse principle produces mode as hand annotation when moving, or the hand annotation that on the writing pad that can experience pressure, produces during paddling of pointed form of a stroke or a combination of strokes object etc.Utilize above-mentioned handtailor pen to realize that hand annotation all has a common shortcoming; Promptly can't reach the hand-written effect of true pen on paper; Exactly because also this point reason; The hand annotation of electronic system is a jejune technology always, can only be used to carry out some and simply write, and can't reach large-scale application and universal.
Summary of the invention
For solving the deficiency of prior art, the object of the present invention is to provide a kind of method that realizes hand annotation through the electronic system of camera.
The technical scheme that employing of the present invention is following:
Electronic system realizes the method for hand annotation, it is characterized in that, comprises the steps:
A, set up the writing plane of camera and setting, make the axis of the lens of above-mentioned camera become the θ degree, in above-mentioned writing plane, confirm to write the zone according to the angular field of view of above-mentioned camera with the angle of above-mentioned writing plane;
B, place a writing paper in the above-mentioned zone of writing, the user utilizes common pen to carry out hand annotation on above-mentioned writing paper towards above-mentioned camera;
C, utilize above-mentioned camera that above-mentioned writing paper is taken, process chip is carried out Screening Treatment to taking the gained image, obtains digitized initial annotations and comments image;
D, process chip are carried out perspective correction to above-mentioned initial annotations and comments image and are generated digitized final annotations and comments image; Above-mentioned perspective correction comprises two steps: vertical length reduction of image and image rotation reduction; The vertical length reduction of wherein above-mentioned image is meant: the vertical length L 1 of the shooting imaging of above-mentioned initial annotations and comments image and the vertical length L 2 of above-mentioned final annotations and comments image are revised through satisfying formula L1=L2 sin (θ), make the vertical length L 2 of above-mentioned final annotations and comments image equal actual vertical length L realization reduction; Above-mentioned image rotation reduction is meant: will initially annotate and comment on the rotation that image carries out 180 degree.
Aforesaid electronic system realizes the method for hand annotation, it is characterized in that, utilizes macroscopic sign to demonstrate the best to write the zone, make the axis of the lens of above-mentioned camera aim at the geometric center that above-mentioned the best is write the zone in the above-mentioned zone of writing.
Aforesaid electronic system realizes the method for hand annotation, it is characterized in that above-mentioned the best is write the size that area size is equal to standard A 4 paper.
Aforesaid electronic system realizes the method for hand annotation; It is characterized in that; Among the above-mentioned steps c, described Screening Treatment is meant, the image file of above-mentioned camera picked-up carry out dot matrixization; Identification is by the dot matrix of above-mentioned writing paper background generation and the dot matrix that is generated by the annotations and comments person's handwriting on the above-mentioned writing paper, and the dot matrix that screens out above-mentioned writing paper background generation only keeps the dot matrix that is generated by the annotations and comments person's handwriting.
Aforesaid electronic system realizes the method for hand annotation; It is characterized in that; Above-mentioned process chip is the central processing unit chip that can compile, move the software of realizing above-mentioned steps, or can realize the special chip except that the central processing unit chip in the above-mentioned electronic system of being integrated in of above-mentioned steps.
Aforesaid electronic system realizes the method for hand annotation, it is characterized in that above-mentioned writing paper can be paper, blackboard, blank, and above-mentioned common pen can be pen, chalk, mark's pen.
Usefulness of the present invention is: can realize effectively that electronic system realizes hand annotation; Reduced the hardware cost of hand annotation; And can write impression really for the user provides, improve the quality that electronic system realizes hand annotation thereby make the user improve writing quality.
Description of drawings
Fig. 1 is the schematic flow sheet that electronic system of the present invention realizes the method for hand annotation;
Fig. 2 is the principle schematic that electronic system of the present invention realizes the vertical length reduction of image in the method for hand annotation.
The implication of Reference numeral among the figure:
The angle that the axis of the lens of θ, camera is become with above-mentioned writing plane, L, actual vertical length, are are initially annotated and commented on the vertical length of the shooting imaging of image at L1, L2, finally annotate and comment on the vertical length of image.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done concrete introduction.
See figures.1.and.2, electronic system of the present invention realizes that the method for hand annotation comprises following step:
A, set up the writing plane of camera and setting, make the axis of the lens of camera become the θ degree, in writing plane, confirm to write the zone according to the angular field of view of camera with the angle of writing plane.
Camera can be computer, mobile phone, consumer panel computer, the study camera with panel computer, the special-purpose panel computer of industry, e-book.Writing plane is write the plane at notes place for the user; It is the plane at lay writing paper place; The axis of the lens of camera and the angle of writing plane are θ, and this angle should be greater than 0 degree smaller or equal to 90 degree, and camera generally all is to have certain angular field of view; Confirm the zone of writing in writing plane according to the angular field of view of camera, just in the writing plane with the angular field of view of the maximum of camera a zone as the border.
As a kind of preferred version, in order to realize optimum image quality, in writing the zone, utilize macroscopic sign to demonstrate the best and write the zone, make the axis of the lens of camera aim at best geometric center of writing the zone.Macroscopic sign can be icon, locating piece, fluorescence icon, wire frame etc.; The affirmation purpose that the best is write the zone is; To put biasing or when writing, cause sheet wander in order to get rid of because of writing paper; Thereby when camera forms images, cause major part in the image to depart from the center or the image section disappearance of imaging.Particularly, to write the zone and be suitable for standardization more in order to make, the size that can make the best write the zone is equal to the size of a mark A4 paper.
B, place a writing paper writing the zone, the user utilizes common pen to carry out hand annotation on writing paper towards camera; Here need to prove that said writing paper is not meant certain type of specific paper among the present invention, but the entity that general reference can be write is not limited to stationery, also can be blackboard or blank above that; The common pen of indication is meant the pen that can on writing paper, stay the marking equally here, can be the pen of classes such as pen, chalk, mark's pen.Generally writing paper and common pen are to make a general reference writing implement and carrier commonly used at ordinary times, and are not limited to a certain their combination.
After confirming to write the zone, writing and placing common paper commonly used in the zone as writing paper, the user carries out hand annotation on writing paper.
C, utilize camera that writing paper is taken, process chip is carried out Screening Treatment to taking the gained image, obtains digitized initial annotations and comments image;
In step c; The Screening Treatment of indication is meant carry out dot matrixization with the image file of camera picked-up; Process chip identification is by the dot matrix of writing paper background generation and the dot matrix that is generated by the annotations and comments person's handwriting on the writing paper, and the dot matrix that screens out the generation of writing paper background only keeps the dot matrix that is generated by the annotations and comments person's handwriting.On the writing paper of white, being written as example with black pen, process chip screens out the dot matrix of white, only keeps the black dot matrix that the person's handwriting by black forms.
D, process chip are carried out perspective correction to initial annotations and comments image and are generated digitized final annotations and comments image; Perspective correction comprises two steps: vertical length reduction of image and image rotation reduction; Wherein the vertical length reduction of image is meant: the shooting vertical length L 1 that forms images and the vertical length L 2 of finally annotating and commenting on image of initially annotating and commenting on image are revised through satisfying formula L1=L2 sin (θ), make the vertical length L 2 of final annotations and comments image equal actual vertical length L realization reduction; Image rotation reduction is meant: will initially annotate and comment on the rotation that image carries out 180 degree.
Vertically length is meant the direction that is parallel to the cam lens axis in the writing plane; As shown in Figure 2; The projecting direction of lens axis among Fig. 2 just; Thereby this has angle just because of the axis of cam lens and writing plane and causes image on this direction, to be shortened distortion, because the user writes in the face of camera often, is vertical length so claim the length of this direction.Can make the vertical length L 2 of final annotations and comments image equal actual vertical length L through the vertical length reduction of image.
Image rotation reduction is because user's camera is write institute's image and actual reversing.
This method is that software capable of using is realized can realizing through hardware again in electronic system, and when utilizing software to realize, process chip is the central processing unit chip that can compile, move the software of realizing above-mentioned steps, and operation realizes that the software program of this method gets final product; When utilizing hardware to realize, can adopt and to realize the special chip except that the central processing unit chip in the above-mentioned electronic system of being integrated in of above-mentioned steps.
The foregoing description does not limit the present invention in any form, and all employings are equal to the technical scheme that mode obtained of replacement or equivalent transformation, all drop in protection scope of the present invention.
Claims (6)
1. electronic system realizes the method for hand annotation, it is characterized in that, comprises the steps:
A, set up the writing plane of camera and setting, make the axis of the lens of above-mentioned camera become the θ degree, in above-mentioned writing plane, confirm to write the zone according to the angular field of view of above-mentioned camera with the angle of above-mentioned writing plane;
B, place a writing paper in the above-mentioned zone of writing, the user utilizes common pen to carry out hand annotation on above-mentioned writing paper towards above-mentioned camera;
C, utilize above-mentioned camera that above-mentioned writing paper is taken, process chip is carried out Screening Treatment to taking the gained image, obtains digitized initial annotations and comments image;
D, process chip are carried out perspective correction to above-mentioned initial annotations and comments image and are generated digitized final annotations and comments image; Above-mentioned perspective correction comprises two steps: vertical length reduction of image and image rotation reduction; The vertical length reduction of wherein above-mentioned image is meant: the vertical length L 1 of the shooting imaging of above-mentioned initial annotations and comments image and the vertical length L 2 of above-mentioned final annotations and comments image are revised through satisfying formula L1=L2 sin (θ), make the vertical length L 2 of above-mentioned final annotations and comments image equal actual vertical length L realization reduction; Above-mentioned image rotation reduction is meant: will initially annotate and comment on the rotation that image carries out 180 degree.
2. electronic system according to claim 1 realizes the method for hand annotation; It is characterized in that; Utilize macroscopic sign to demonstrate the best to write the zone in the above-mentioned zone of writing, make the axis of the lens of above-mentioned camera aim at the geometric center that above-mentioned the best is write the zone.
3. electronic system according to claim 2 realizes the method for hand annotation, it is characterized in that above-mentioned the best is write the size that area size is equal to standard A 4 paper.
4. electronic system according to claim 1 realizes the method for hand annotation; It is characterized in that; Among the above-mentioned steps c, described Screening Treatment is meant, the image file of above-mentioned camera picked-up carry out dot matrixization; Identification is by the dot matrix of above-mentioned writing paper background generation and the dot matrix that is generated by the annotations and comments person's handwriting on the above-mentioned writing paper, and the dot matrix that screens out above-mentioned writing paper background generation only keeps the dot matrix that is generated by the annotations and comments person's handwriting.
5. realize the method for hand annotation according to any described electronic system of claim 1 to 4; It is characterized in that; Above-mentioned process chip is the central processing unit chip that can compile, move the software of realizing above-mentioned steps, or can realize the special chip except that the central processing unit chip in the above-mentioned electronic system of being integrated in of above-mentioned steps.
6. electronic system according to claim 5 realizes the method for hand annotation, it is characterized in that above-mentioned writing paper can be paper, blackboard, blank, and above-mentioned common pen can be pen, chalk, mark's pen.
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| CN201110279316A CN102331909A (en) | 2011-09-20 | 2011-09-20 | Method for realizing manual annotation in electronic system |
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| CN201110279316A CN102331909A (en) | 2011-09-20 | 2011-09-20 | Method for realizing manual annotation in electronic system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104850535A (en) * | 2015-06-04 | 2015-08-19 | 杭州国文科技有限公司 | Electronic book handwriting annotating system |
| CN105835536A (en) * | 2015-04-03 | 2016-08-10 | 江苏浩宇电子科技有限公司 | Writing method for small-sized portable writing machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101308426A (en) * | 2007-05-18 | 2008-11-19 | 北京汇冠新技术有限公司 | Pick-up head employed personal mobile information equipment hand-written input device |
| CN101763189A (en) * | 2008-12-23 | 2010-06-30 | 北京汇凯网络技术服务有限公司 | Intelligent handwriting board |
| CN101877067A (en) * | 2009-11-16 | 2010-11-03 | 北京中星微电子有限公司 | Method and system for hand input based on camera device |
-
2011
- 2011-09-20 CN CN201110279316A patent/CN102331909A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101308426A (en) * | 2007-05-18 | 2008-11-19 | 北京汇冠新技术有限公司 | Pick-up head employed personal mobile information equipment hand-written input device |
| CN101763189A (en) * | 2008-12-23 | 2010-06-30 | 北京汇凯网络技术服务有限公司 | Intelligent handwriting board |
| CN101877067A (en) * | 2009-11-16 | 2010-11-03 | 北京中星微电子有限公司 | Method and system for hand input based on camera device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105835536A (en) * | 2015-04-03 | 2016-08-10 | 江苏浩宇电子科技有限公司 | Writing method for small-sized portable writing machine |
| CN105835535A (en) * | 2015-04-03 | 2016-08-10 | 江苏浩宇电子科技有限公司 | Stroke type writing method for small-sized portable writing machine |
| CN105835535B (en) * | 2015-04-03 | 2018-04-13 | 江苏浩宇电子科技有限公司 | A kind of stroke system Writing method for small portable writing machine |
| CN104850535A (en) * | 2015-06-04 | 2015-08-19 | 杭州国文科技有限公司 | Electronic book handwriting annotating system |
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Application publication date: 20120125 |