CN101662561A - Method for extracting document image by pick-up device - Google Patents
Method for extracting document image by pick-up device Download PDFInfo
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- CN101662561A CN101662561A CN200810130908A CN200810130908A CN101662561A CN 101662561 A CN101662561 A CN 101662561A CN 200810130908 A CN200810130908 A CN 200810130908A CN 200810130908 A CN200810130908 A CN 200810130908A CN 101662561 A CN101662561 A CN 101662561A
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Abstract
The invention relates to a method for extracting a document image by a pick-up device. The method comprises the following steps of: mounting a laptop computer; providing a document fixer; placing a document in the document fixer in a way of making the midpoint of the long edge of the document aim at the midpoint of the document fixer; moving the document fixer according to the size of the documentto make the midpoint of the document fixer aim at a symbolic label on the laptop computer; and extracting the document image and processing the document image. In the method, the document is positioned by making the document fixer aim at the label on the laptop computer, so that the image which is clear and not skew can be obtained.
Description
Technical field
The present invention relates to a kind of method that obtains document image, relate in particular to a kind of method of utilizing camera head to come the extraction document image.
Background technology
Camera head is generally in order to taking pictures or purposes such as video recording, and that camera head is applied to network camera is also extensive day by day with the function that the network teleconference is provided, and camera head is built in the notebook also more and more widely.
Along with development of science and technology, the electronization of text file is also more and more universal, and general archive files is to be stored as e-file (generally being stored as pdf document) by scanning means with archive files scanning and with it.But be not that every computer all is provided with scanning means, and this document data only are more simple files such as single face data or business card, can the use a computer camera head of periphery of user extracts the image of file and gets off to be stored as e-file, and wherein this e-file is image file (jpeg file).But general user still uses the pdf document that produces by scanning means as much as possible, its reason is that pdf document can make computer read literal and the symbol that is comprised in its file, and is text file and can editing with described a plurality of literal or symbol transition.
But, because optical character recognition technology (Optical Character Recognition, OCR) development reaches its maturity, allowing the user operate the image that camera head obtains can analyze jpeg file by the optical character recognition technology, and can be text file and editor with literal and the symbol transition that is comprised in the jpeg file also.Therefore, there is increasing user to select to use camera head to obtain the electronic image files of file.
To be arranged at the camera head that covers on the notebook is that example illustrates, the user is positioned over file on the working face (being generally desktop), the loam cake of rotation notebook, make the camera head that is arranged at loam cake approach the file on the working face and take, to obtain the image of file.Yet, use aforesaid way in the process of acquisition document image many problems can take place to the file shooting, modal is exactly the crooked problem of image: first, file is put on working face because of there not being fixing reference point, so being positioned at position on the working face, each file all has slightly error, because that these errors make camera head carry out taking place when image extracts focusing easily is inaccurate and can't obtain the document image of preferable definition.Second, because the horizontal coverage deficiency of camera head, therefore in the time must taking the file of large-size, can't once take and promptly obtain the complete file image, so this document must be divided the first half and Lower Half, and carry out twice shooting, the technology of two imagery exploitation image processing that will obtain again combines.And after the user utilizes image acquiring apparatus to take the first half of file, the Lower Half of alignment lens file that must move makes image acquiring apparatus is so that take, but in the process of move, file is not reliably with reference to utensil or reference point, file is easy to after moving can be crooked and can't be parallel with the file before moving or be positioned on the identical horizontal level, so the image of file Lower Half can produce crooked and can't combine with the image of the file first half, and till the image of the file Lower Half that the image angle of must the retake acquisition and the file first half is coincide.Above-mentioned acquisition definition is not enough or crooked document image allows the user perplex endlessly, therefore, needs a kind of method that obtains clear and not crooked document image.
Summary of the invention
Purpose of the present invention is utilized file fixer that file is fixed and is utilized camera head that file is taken and obtain the method for document image providing a kind of.
Another object of the present invention can firmly move horizontally on working face file fixer and the method that camera head is taken the different piece of file providing a kind of.
Another object of the present invention is utilized camera head that the different piece of file is repeatedly taken and can be provided many image reference points so that in conjunction with the method for many images providing a kind of.
In a preferred embodiment, the invention provides a kind of method of utilizing camera head extraction document image, comprising:
One camera head and a shooting bracing frame are provided, camera head is arranged on this shooting bracing frame, and the base leading edge of shooting bracing frame have a sign flag;
One file fixer is provided,, and is provided with a fixture mid point mark in the central authorities of file fixer in order to the clamping file;
Place file in file fixer, file is held in the file fixer, and with the long limit midpoint alignment fixture mid point mark of file;
The move fixture according to the size of file makes fixture mid point markers align in sign flag;
Using this camera head that this document is carried out image extracts; And
Obtain an image, and image is carried out image processing.
In a preferred embodiment, the present invention also provides a kind of method of utilizing camera head extraction document image, comprising:
One camera head and a shooting bracing frame are provided, camera head is arranged on the shooting bracing frame;
Provide a file fixer, in order to the clamping file;
Place file in file fixer, file is held in the file fixer, and first's front end of file is aimed at the front end of shooting bracing frame base, and the terminal end of aiming at shooting bracing frame base of the first of file;
Use camera head that the first of this document is carried out the image extraction;
Obtain first image, this first image comprises first's document image, the first base front end image and the first base end view picture;
Place file once more in this document fixture, make the front end of the second portion front end aligning shooting bracing frame base of file, and the terminal end of aiming at shooting bracing frame base of the second portion of file;
Use camera head that the second portion of file is carried out the image extraction;
Obtain second image, this second image comprises second portion document image, the second base front end image and the second base end view picture;
First and second image is carried out keystone to be handled; And
First image and the second image combination that will be after keystone is handled, wherein the combination of first image and second image be according to the second base front end image congruencing in the first base end view picture in first image and second image.
The mark that the present invention aims on the notebook by file fixer carries out the location of file and obtains clear not crooked image.
Description of drawings
Fig. 1 is the block flow diagram that the present invention utilizes the method for camera head extraction document image.
Fig. 2 is the structural representation that the present invention utilizes method camera system in first preferred embodiment of camera head extraction document image.
Fig. 3 is the schematic top plan view that the present invention utilizes method camera system in first preferred embodiment of camera head extraction document image.
Fig. 4 is the schematic top plan view that the present invention utilizes method camera system in second preferred embodiment of camera head extraction document image.
Fig. 5 (a), Fig. 5 (b), Fig. 5 (c) are the schematic top plan view that the present invention utilizes method camera system in the 3rd preferred embodiment of camera head extraction document image.
Fig. 6 (a), Fig. 6 (b), Fig. 6 (c) are the schematic top plan view that the present invention utilizes method camera system in the 4th preferred embodiment of camera head extraction document image.
Fig. 7 (a), Fig. 7 (b) are the schematic top plan view that the present invention utilizes method camera system in the 5th preferred embodiment of camera head extraction document image.
Fig. 8 (a), Fig. 8 (b) are the schematic top plan view that the present invention utilizes method camera system in the 6th preferred embodiment of camera head extraction document image.
Fig. 9 (a), Fig. 9 (b) are the schematic top plan view that the present invention utilizes method camera system in the 7th preferred embodiment of camera head extraction document image.
Wherein, description of reference numerals is as follows:
1 camera system, 10 notebooks
101 loam cakes, 102 keyboard bases
1021,1022,1023 sign flags, 1024 file mid point marks
103 camera heads, 20 file fixers
201 fixture mid point marks, 202 fixture side marks
The long limit of D1～D5 file L1～L5 file
S1～S12 step
Embodiment
The puzzlement that brings for the user in view of prior art, the present invention proposes a kind of file fixer of rigidity that utilizes and fixes soft file, make file fixer lean on camera head and peripheral equipment thereof and make file can be positioned at the horizontal line identical and not crooked, and can utilize file fixer to fix file so that take with camera head.The step of extraction document image method of the present invention at first is described, sees also Fig. 1, it utilizes the block flow diagram of the method for camera head extraction document image for the present invention.The present invention proposes to utilize the method for camera head extraction document image may further comprise the steps: the base leading edge that step S1 is provided with camera head and shooting bracing frame and shooting bracing frame is provided with sign flag, file fixer is set step S2 and file fixer has fixture mid point mark, step S3 places file in file fixer and make the long limit midpoint alignment fixture mid point mark of file, and step S4 judges according to document size whether camera head can once be taken and promptly obtains the complete file image.If the size of file does not exceed the horizontal coverage of camera head, be that camera head can be in once shooting and when obtaining the complete file image, carry out step S5, step S5 is positioned at fixture mid point markers align the sign flag of shooting bracing frame base leading edge central authorities, then step S6 uses the image of camera head extraction document, and step S7 carries out image processing with the document image that obtains.After getting back to step S4 and finishing, if the size of file exceeds the horizontal coverage of camera head, be that camera head is must carry out the above shooting of twice or twice and just can obtain the complete file image time, carry out step S8, step S8 is positioned at fixture mid point markers align the sign flag of shooting bracing frame base leading edge one side, then step S9 uses the image of camera head extraction document first, step S10 move fixture makes the sign flag of fixture mid point markers align shooting bracing frame base leading edge opposite side, then carry out step S11, for using the image of camera head extraction document second portion, last step S12 carries out image processing to first image and second image of file.More than utilize the method step of camera head extraction document image for the present invention.
Illustrate with embodiment, see also Fig. 2, it utilizes the structural representation of method camera system in first preferred embodiment of camera head extraction document image for the present invention.As the shooting bracing frame, and shooting bracing frame base is the keyboard base of notebook to ensuing embodiment with notebook.Among Fig. 2, camera system 1 comprises notebook 10, a file fixer 20 and a file D1, wherein notebook 10 comprises loam cake 101 and keyboard base 102, be provided with a camera head 103 in these loam cake 101 central authorities, and the centre of keyboard base 102 leading edges has sign flag 1021 (part of step S1 among Fig. 1).The centre of file fixer 20 is provided with a fixture mid point mark 201, and file fixer 20 clamping file D1 are also leaning on keyboard base 102 leading edges of notebook 10, wherein file D1 has a long limit L1, and the fixture mid point mark 201 (part of step S2 and step S3) of the long limit L1 midpoint alignment file fixer 20 of file D1.In addition, one side of file fixer 20 is provided with a fixture side mark 202, and the opposite side of file fixer 20 also is provided with a fixture side mark 202, with so that fixture side mark 202 is aimed at the minor face edge of file D1, makes camera head 103 aim at the centre place of file D1.
Next please consult Fig. 2 and Fig. 3 simultaneously, Fig. 3 is the schematic top plan view that the present invention utilizes method camera system in first preferred embodiment of camera head extraction document image.In the camera system 1 of Fig. 3, the size of file D1 is less than file fixer 20, and can through camera head 103 once shooting and obtain the complete file image of file D1, see step S4, after judging that file D1 only needs to be taken once by shooting device 103, move fixture 20 makes fixture mid point mark 201 aim at the sign flag 1021 of keyboard base 102 leading edge central authorities, see step S5, at this moment, fixture side mark 202 is also aimed at the minor face edge of file D1, make camera head 103 and sign flag 1021, the long limit of fixture mid point mark 201 and file L1 mid point is located along the same line, and the centre that camera head 103 is aimed at file D1, and the image of camera head 103 extraction document D1, see step S6, owing to be arranged between camera head 103 on the loam cake 101 of notebook 10 and the file D1 with an angle, can produce a tilt phenomenon so take the image of back acquisition, tilt phenomenon for the image of eliminating file D1, must carry out image processing to the image of file D1, see step S7, wherein the image processing in the step 7 is that image with file D1 carries out keystone and handles and eliminate tilt phenomenon, in addition, the image that camera head 103 extracts is except the image of file D1, also the part of keyboard base 103 leading edges and file fixer 20 can be taken in the lump, therefore, still need after keystone is handled again and will eliminate except the image the file D1, just the image-context that the image that removes file itself arround the image is eliminated is eliminated and is handled, after the elimination, the image of file D1 extracts and finishes.
See also Fig. 4, it utilizes the schematic top plan view of method camera system in second preferred embodiment of camera head extraction document image for the present invention.In second preferred embodiment, similarly be provided with notebook 10 and file fixer 20 etc. and the first preferred embodiment components identical on the working face, different with first preferred embodiment is the file D2 size that is positioned in the file fixer 20, wherein the length of the long limit L2 of file D2 is greater than the length of file fixer 20, but the length of the long limit L2 of file is less than the length (length of the bracing frame base of promptly making a video recording) of keyboard base 102.In the camera system 1 of Fig. 4, file D2 is placed in the file fixer 20 and the fixture mid point mark 201 of its long limit L2 midpoint alignment file fixer 20, and the fixture mid point mark 201 of file fixer 20 is aimed at the sign flag 1021 of the keyboard base 102 leading edge central authorities of notebooks 10, and a side of keyboard base 102 leading edges also has second sign flag 1022, opposite side in keyboard base 102 leading edges also has second sign flag 1022, the distance that wherein said two second sign flags were clipped to sign flag 1021 in 1022 minutes is identical, and second sign flag 1022 is aimed at the minor face edge of file D2.The present invention as the reference point, makes camera head 103 aim at the centre place of file D2 really by described a plurality of marks.Following step is identical with first preferred embodiment, and promptly 103 couples of file D2 of camera head once take and obtain image and this image is carried out keystone processing and image-context elimination processing, and the image of file D2 extracts and finishes.
When camera head when extracting larger sized document image, camera head can't obtain the complete file image, therefore file must be divided into a plurality of parts, and make camera head take certain part of file at every turn, move fixture in regular turn again, make camera head take other parts of file, at last the All Files parts of images is carried out image processing, to obtain the complete file image.See also Fig. 5 (a), Fig. 5 (b), Fig. 5 (c), it utilizes the schematic top plan view of method camera system in the 3rd preferred embodiment of camera head extraction document image for the present invention.In the camera system 1 of Fig. 5, notebook 10 and file fixer 20 similarly are arranged on the working face, different is the position of size and the sign flag 1021 of file D3, wherein the long limit L3 length of file D3 is greater than the length of keyboard base 102, and sign flag 1021 is positioned at a side of keyboard base 102 leading edges, and second sign flag 1022 is positioned at the opposite side of keyboard base 102 leading edges.Before taking beginning, in order to make the certain secured in alignment device of the long limit L3 mid point of file mid point mark 201, side in keyboard base 102 leading edges is provided with a file mid point mark 1024, when making fixture mid point mark 201 aim at file mid point mark 1024, the opposite side of a minor face justified margin keyboard base 102 leading edges of file D3, so that file is grown limit L3 midpoint alignment fixture mid point mark 201, shown in Fig. 5 (a).Behind the fixture mid point mark 201 of the long limit of file L3 midpoint alignment file fixer 20, promptly begin to carry out the shooting of file D3.Among Fig. 5 (b), because the size of file D3 is big slightly, camera head 103 on the loam cake 101 of notebook 10 can't once be taken promptly obtain complete file D3 image, therefore, after making file D3 by the fixture mid point mark 201 of file fixer 20 clampings and the long limit of file L3 midpoint alignment file fixer 20, and the sign flag 1021 that move fixture 20 makes fixture mid point mark 201 aim at keyboard base 102 leading edges makes camera head 103 aim at the centre place of the first of file D3, sees step S8.Next the image of camera head 103 extraction document D3 firsts and obtain one first image is seen step S9, and wherein first image comprises first's document image and sign flag image.After the first of file D3 takes and finishes, need move D3 to make camera head 103 take the second portion of file D3, among Fig. 5 (c), the fixture mid point mark 201 of file fixer 20 is still aimed at the mid point of the long limit L3 of file, the relative position that yet is 20 of file D3 and file fixers does not change, but file fixer 20 has been moved to fixture mid point mark 201 and has aimed at second sign flag 1022 that is positioned at keyboard base 102 leading edge opposite sides, make camera head 103 aim at the centre place of file D3 Lower Half, see step S10, wherein sign flag 1021 equals the distance of the front end (left end among Fig. 5) of second sign flag 1022 and keyboard base 102 to the distance of the end (right-hand member among Fig. 5) of keyboard base 102.The second portion of 103 couples of file D3 of camera head extracts image and obtains second image, sees step S11, and wherein second image comprises the second portion document image and the second sign flag image.The back obtains second image that tilts and first image that had before obtained to tilt carried out image processing with taking, see step S12, wherein image processing comprises that first and second image is carried out keystone to be handled, after the tilt phenomenon elimination with two images, first and second image that will not tilt again carries out the image combination, and wherein image is in conjunction with being according to the sign flag image in first image is combined first image and second image with the second sign flag image congruencing in second image.Image has complete file D3 image and mixed and disorderly file context image in conjunction with the image that the back is obtained, and then carries out image-context and eliminates processing, and the image of file D3 extracts and finishes.
Then propose file is carried out the embodiment of three shootings, see also Fig. 6 (a), Fig. 6 (b), it utilizes the schematic top plan view of method camera system in the 4th preferred embodiment of camera head extraction document image for the present invention.Present the camera system identical with above preferred embodiment 1 among Fig. 6, but the file D4 of large-size in file fixer 20 clampings, wherein the length of the long limit L4 of the file of file D4 is also greater than keyboard base 102 length of notebook 10.Must aim at fixture mid point mark 201 steps of file fixer 20 omits as for the long limit of the file L4 mid point before taking.Consider the scope that camera head 103 can be taken, but must dividing, camera head 103 takes the just complete image of extraction document D4 for three times, therefore, it is sign flag 1021 in regular turn to a left side that keyboard base 102 leading edges of notebook 10 are provided with three sign flags-right by Fig. 6, second sign flag 1022 and the 3rd sign flag 1023, wherein sign flag 1021 is arranged at a side of keyboard base 102 leading edges, second sign flag 1022 is arranged at the centre of keyboard base 102 leading edges, and the 3rd sign flag 1023 is arranged at the opposite side of keyboard base 102 leading edges, makes sign flag 1021 equal the distance of the 3rd sign flag 1023 to the front end (left end among Fig. 6) of keyboard base 102 to the distance of the end (right-hand member among Fig. 6) of keyboard base.Among Fig. 6 (a), file fixer 20 clamping file D4 and fixture mid point mark 201 are aimed at the mid point of the long limit L4 of file, when user's desire is taken the first image of file D4, move fixture 20 makes fixture mid point mark 201 aim at the sign flag 1021 of keyboard base 102 leading edges, make camera head 103 aim at the centre of file D4 first, then the image of camera head 103 extraction document D4 firsts is to obtain one first image, and wherein first image comprises first's document image and sign flag image.After the shooting, move fixture 20 makes fixture mid point mark 201 aim at second sign flag 1022, shown in Fig. 6 (b).Camera head 103 is aimed at the centre place of file D4 second portions, second of 103 couples of file D4 of camera head are partly taken and obtains one second image, and wherein second image comprises the second portion document image and the second sign flag image.Then continue move fixture 20 and make fixture mid point mark 201 aim at the 3rd sign flag 1023, shown in Fig. 6 (c).And the image of the third part of camera head 103 extraction document D4 and obtain one the 3rd image, wherein the 3rd image comprises third part document image and the 3rd sign flag image.Then first image, second image and the 3rd image being carried out keystone handles to eliminate the tilt phenomenon of described a plurality of images, carry out the image combination of first image, this second image and the 3rd image again, wherein image is according to the second sign flag image congruencing in the sign flag image in first image and second image in conjunction with processing, and with the 3rd sign flag image congruencing in the second sign flag image in second image and the 3rd image and to combine first image, second image and the 3rd image be complete file D4 image.At last image is carried out image-context in conjunction with the image that is obtained and eliminate processing, the image of file D4 extracts and finishes.
The explanation of the above-mentioned the 3rd and the 4th preferred embodiment is when document size is too big, utilize file fixer clamping file and move horizontally the related move of file fixer and camera head is repeatedly taken, relend to help described a plurality of images are carried out image processing and obtain complete file, wherein, the user utilizes camera head that each part of file is carried out each shooting and the image that obtains all can photograph sign flag in the image in the lump, and the present invention utilizes the sign flag of shooting bracing frame base leading edge as the simplified image alignment work helps the image combination greatly with reference to point comes alignment image.
Except putting as reference with sign flag, also can utilize file fixer as the reference point, see also Fig. 7 (a), Fig. 7 (b), it utilizes the schematic top plan view of method camera system in the 5th preferred embodiment of camera head extraction document image for the present invention.Present among Fig. 7 in the camera system same as the previously described embodiments 1, the length of the long limit L5 of the file of file D5 is also greater than keyboard base 102 length of notebook 10, and the step that needs before taking the long limit of file L5 mid point to be aimed at the fixture mid point mark 201 of file fixer 20 is omitted.Consider the scope that camera head 103 can be taken, but camera head 103 must divide secondary to take the just complete image of extraction document D5, in fifth preferred embodiment of the invention, keyboard base 102 leading edges only are provided with the side of a sign flag 1021 in keyboard base 102 leading edges, among Fig. 7 (a), grow the fixture mark 201 of the midpoint alignment file fixer 20 of limit L5 when the file of file D5, and file D5 by file fixer 20 clampings after, move fixture 20 makes fixture mark 201 alignment symbology marks 1021, and make camera head 103 aim at the centre of the first of file D5, wherein the front end (left end among Fig. 7) of keyboard base 102 is aimed at the minor face edge of file D5.Follow the image of camera head 103 extraction document D5 firsts and obtain one first image, wherein first image comprises first's document image and one first fixture mid point marking image.Then move fixture 20 makes another minor face edge of file D5 aim at the end (right-hand member among Fig. 7) of keyboard base 102, shown in Fig. 7 (b).Camera head 103 is aimed at the centre place of the second portion of file D5, second of 103 couples of file D5 of camera head are partly taken and obtains one second image, and wherein second image comprises the second portion document image and the second fixture mid point marking image.Then first image and second image are carried out the keystone processing to eliminate the tilt phenomenon of described a plurality of images, carry out the image combination of first image and this second image again, wherein image is according to combining first image and second image is a complete file D5 image with first fixture mid point marking image in first image and the second fixture mid point marking image in second image are superimposed in conjunction with processing.At last image is carried out image-context in conjunction with the image that is obtained and eliminate processing, the image of file D5 extracts and finishes.
The present invention also proposes to utilize the embodiment of file fixer as the reference point of image combination, sees also Fig. 8 (a), Fig. 8 (b), and it utilizes the schematic top plan view of method camera system in the 6th preferred embodiment of camera head extraction document image for the present invention.The length of the long limit L6 of the file of file D6 also greater than keyboard base 102 length of notebook 10, is considered the scope that camera head 103 can be taken in the camera system 1, takes the just complete image of extraction document D6 but camera head 103 must carry out secondary.Identical with the 5th preferred embodiment in sixth preferred embodiment of the invention, promptly keyboard base 102 leading edges only are provided with the side of a sign flag 1021 in keyboard base 102 leading edges.Among Fig. 8 (a), grow the fixture mark 201 of the midpoint alignment file fixer 20 of limit L6 when the file of file D6, and file D6 by file fixer 20 clampings after, move fixture 20 makes fixture mark 201 alignment symbology marks 1021, make camera head 103 aim at the centre of the first of file D6, and the end of file fixer 20 is aimed at the end (right-hand member among Fig. 8) of keyboard base 102.Follow the image of camera head 103 extraction document D6 firsts and obtain one first image, wherein first image comprises first's document image, the first fixture front end image and the first fixture end view picture.After obtaining first image, move fixture 20 makes the front end of file fixer 20 aim at the front end (left end among Fig. 7) of keyboard base 102, shown in Fig. 8 (b).Camera head 103 is aimed at the centre place of the second portion of file D6, second of 103 couples of file D6 of camera head are partly taken and obtain one second image, wherein second image comprises second portion document image, the second fixture front end image and the second fixture end view picture.Then first image and second image are carried out the keystone processing to eliminate the tilt phenomenon of described a plurality of images, carry out the image combination of first image and this second image again, wherein image is according to the first fixture front end image in first image being combined first image with the second fixture front end image congruencing in second image and second image is a complete file D6 image in conjunction with processing.At last image is carried out image-context in conjunction with the image that is obtained and eliminate processing, the image of file D6 extracts and finishes.
The the above-mentioned the 5th and the 6th preferred embodiment provides a kind of reference point of utilizing file fixer as the image combination, difference be in the 5th preferred embodiment be with fixture mid point mark as the reference point, the 6th preferred embodiment then is with the front end of file fixer itself and terminal as with reference to putting with combining image.In addition, the present invention also can utilize the preceding terminal edge of housing of shooting bracing frame itself to be used as the reference point of image combination, as described in the content that seventh preferred embodiment of the invention disclosed.
See also Fig. 9 (a), Fig. 9 (b), it utilizes the schematic top plan view of method camera system in the 7th preferred embodiment of camera head extraction document image for the present invention.In the camera system 1 of Fig. 9, the long limit L7 length of file D7 is the twice for keyboard base 102 length, and keyboard base 102 leading edges are not provided with any sign flag, file D7 is positioned in the file fixer 20 and with file fixer 20 leans in keyboard base 102 leading edges, and the location of file fixer 20 and keyboard base 102 is the relations according to file D7 and keyboard base 102, the horizontal level that yet is file fixer 20 is not limit, but the front end of the first of file D7 (also being the minor face edge of file D7) is aimed at the front end (Fig. 9 left end) of keyboard base 102, and the end of the first of file D7 is aimed at the end (Fig. 9 right-hand member) of keyboard base 102, shown in Fig. 9 (a).Follow the image of camera head 103 extraction document D7 firsts and obtain one first image, wherein first image comprises first's document image, the first base front end image and the first base end view picture.After obtaining first image, reappose file D7 in file fixer 20, make the front end of the second portion of file D7 aim at the front end of keyboard base 102, and the end of the second portion of file D7 aims at the end of keyboard base 102, shown in Fig. 9 (b).Aim at the centre place of the second portion of file D7 when camera head 103, second of 103 couples of file D7 of camera head are partly taken and obtain one second image, wherein second image comprises second portion document image, the second base front end image and the second base end view picture.Then first image and second image are carried out the keystone processing to eliminate the tilt phenomenon of described a plurality of images, carry out the image combination of first image and this second image again, wherein image is according to the first base end view picture in first image being combined first image with the second base front end image congruencing in second image and second image is a complete file D7 image in conjunction with processing.
According to above-mentioned execution mode as can be known, the present invention utilizes file fixer clamping file and file fixer is being leaned on the leading edge of bracing frame base of making a video recording, so that file fixer can keep moving horizontally in moving process, just allow file after moving, not take place crooked and can be positioned on the identical horizontal level.Moreover, need repeatedly take and during in conjunction with the image that obtained, because it is crooked to utilize the present invention to take the neither generation of the image that is obtained, therefore described a plurality of images can be combined into a complete image.And the invention provides between file fixer and shooting bracing frame or the localization method between file and shooting bracing frame, so that camera head can be aimed at files of different size, and then the image of extraction document.Can obtain not crooked picture rich in detail easily by extraction image method provided by the invention, and utilize various reference points (sign flag, fixture mid point mark, file fixer front end and terminal and shooting bracing frame base front end and end or the like) to help a plurality ofly have incomplete document image and carry out image and combine and obtain the complete file image.Though embodiments of the present invention are example with the notebook, but be not that the shooting bracing frame is limited to notebook, in fact, the shooting bracing frame is that a kind of the shooting has the rigid mount of an angle between bracing frame and its base, make the not parallel rigid mount of camera head that is arranged on the shooting bracing frame with file, therefore with the example of quite universal on the market notebook, make the present invention have the convincingness that specifically to implement really as the shooting bracing frame.Combine speech, the method for utilizing camera head extraction document image of the present invention's announcement has not only reduced puzzlement in many uses for the user, also brings many conveniences.
The above is the preferred embodiments of the present invention only, is not in order to limiting claim scope of the present invention, and therefore all other do not break away from the equivalence of being finished under the disclosed spirit and change or modify, and all should be contained in the claim scope of the present invention.
Claims (32)
1, a kind of method of utilizing camera head extraction document image comprises:
One camera head and a shooting bracing frame are provided, this camera head is arranged on this shooting bracing frame, and the base leading edge of this shooting bracing frame have a sign flag;
One file fixer is provided,, and is provided with a fixture mid point mark in the central authorities of this document fixture in order to clamping one file;
Place this document in this document fixture, this document is held in this document fixture, and with this fixture mid point mark of long limit midpoint alignment of this document;
Mobile this document fixture according to the size of this document makes this fixture mid point markers align in this sign flag;
Using this camera head that this document is carried out image extracts; And
Obtain an image, and this image is carried out image processing.
2, the method for utilizing camera head extraction document image as claimed in claim 1, wherein when the long edge lengths of this document during less than the length of this document fixture, this sign flag is arranged at the centre of this shooting bracing frame base leading edge, and the long limit mid point of this camera head and this sign flag, this fixture mid point mark and this document is located along the same line.
3, the method for utilizing camera head extraction document image as claimed in claim 2, wherein this document fixture also comprises a fixture side mark, be arranged at a side of this document fixture, with so that a minor face edge of this fixture side markers align this document, the centre that makes this camera head aim at this document is sentenced the image that just extracts this document.
4, the method for utilizing camera head extraction document image as claimed in claim 3, wherein this image processing is that keystone is handled and image-context is eliminated processing.
5, the method for utilizing camera head extraction document image as claimed in claim 1, wherein work as the length of the length on the long limit of this document greater than this document fixture, and the long edge lengths of this document is during less than the length of this shooting bracing frame base, this sign flag is arranged at the centre of this shooting bracing frame base leading edge, and the long limit mid point of this camera head and this sign flag, this fixture mid point mark and this document is located along the same line.
6, the method for utilizing camera head extraction document image as claimed in claim 5, wherein this shooting bracing frame also comprises one second sign flag, be arranged at a side of this shooting bracing frame base leading edge, with so that this second sign flag is aimed at a minor face edge of this document, the centre that makes this camera head aim at this document is sentenced and is just extracted this complete file image.
7, the method for utilizing camera head extraction document image as claimed in claim 6, wherein this image processing is that keystone is handled and image-context is eliminated processing.
8, the method of utilizing camera head extraction document image as claimed in claim 1, wherein when the length on the long limit of this document during greater than the length of this shooting bracing frame base, the shooting bracing frame also comprises a file mid point mark, be positioned at a side of this shooting bracing frame base leading edge, when making this fixture mid point markers align this document mid point mark, the one minor face justified margin of this document is somebody's turn to do an opposite side of shooting bracing frame base leading edge, with this fixture mid point mark of long limit midpoint alignment with this document, and this sign flag is arranged at a side of this shooting bracing frame base leading edge, and the centre that makes this camera head aim at a first of this document is sentenced one first image that just extracts this document.
9, the method for utilizing camera head extraction document image as claimed in claim 8, wherein this shooting bracing frame also comprises one second sign flag, be positioned at an opposite side of this shooting bracing frame base leading edge, make this sign flag equal the distance of this second sign flag to a front end of this shooting bracing frame base to the distance of an end of this shooting bracing frame base.
10, the method for utilizing camera head extraction document image as claimed in claim 9, wherein after this camera head obtains this first image of this document, mobile this document fixture, make this this second sign flag of fixture mid point markers align, and the centre that makes this camera head aim at a second portion of this document is sentenced one second image that just extracts this document.
11, the method for utilizing camera head extraction document image as claimed in claim 10, wherein this image processing comprises that keystone is handled, the image of this first image that will be after keystone is handled and this second image combination is in conjunction with handling and image-context is eliminated processing.
12, the method for utilizing camera head extraction document image as claimed in claim 11, wherein this first image comprises a first's document image and a sign flag image, this second image comprises a second portion document image and one second sign flag image, and this image is according to this sign flag image in this first image is combined this first image and this second image with this second sign flag image congruencing in this second image in conjunction with processing.
13, the method for utilizing camera head extraction document image as claimed in claim 8, wherein this shooting bracing frame also comprises one second sign flag and one the 3rd sign flag, this second sign flag is arranged at the centre of this shooting bracing frame base leading edge, and the 3rd sign flag is arranged at an opposite side of this shooting bracing frame base leading edge, makes this sign flag equal the distance of the 3rd sign flag to a front end of this shooting bracing frame base to the distance of an end of this shooting bracing frame base.
14, the method for utilizing camera head extraction document image as claimed in claim 13, wherein after this camera head obtains this first image of this document, mobile this document fixture, make this this second sign flag of fixture mid point markers align, and the centre that makes this camera head aim at a second portion of this document is sentenced one second image that just extracts this document.
15, the method for utilizing camera head extraction document image as claimed in claim 14, wherein after this camera head obtains this second image of this document, mobile this document fixture, make this fixture mid point markers align the 3rd sign flag, and the centre that makes this camera head aim at a third part of this document is sentenced one the 3rd image that just extracts this document.
16, the method for utilizing camera head extraction document image as claimed in claim 15, wherein this image processing comprises that keystone is handled, the image of this first image, this second image and the 3rd image combination that will be after keystone is handled is in conjunction with handling and image-context is eliminated processing.
17, the method of utilizing camera head extraction document image as claimed in claim 16, wherein this first image comprises a first's document image and a sign flag image, this second image comprises a second portion document image and one second sign flag image, the 3rd image comprises a third part document image and one the 3rd sign flag image, and this image is according to this sign flag image in this first image and this second sign flag image congruencing in this second image in conjunction with processing, and with the 3rd sign flag image congruencing in this second sign flag image in this second image and the 3rd image and combine this first image, this second image and the 3rd image.
18, the method for utilizing camera head extraction document image as claimed in claim 1, wherein this sign flag is positioned at a side of this shooting bracing frame base leading edge, during this this sign flag of fixture mid point markers align, make the front end of a minor face edge of this document, and the centre of a first of this camera head aligning this document is sentenced one first image that just extracts this document in alignment with this shooting bracing frame base.
19, the method for utilizing camera head extraction document image as claimed in claim 18, wherein after this camera head obtains this first image of this document, mobile this document fixture, make the end of another minor face edge of this document, and the centre of a second portion of this camera head aligning this document is sentenced one second image that just extracts this document in alignment with this shooting bracing frame base.
20, the method for utilizing camera head extraction document image as claimed in claim 19, wherein this image processing comprises that keystone is handled, the image of this first image that will be after keystone is handled and this second image combination is in conjunction with handling and image-context is eliminated processing.
21, the method for utilizing camera head extraction document image as claimed in claim 20, wherein this first image comprises first's document image and one first fixture mid point marking image, this second image comprises a second portion document image and one second fixture mid point marking image, and this image is according to this first fixture mid point marking image in this first image and superimposed this first image and this second image of combining of this second fixture mid point marking image in this second image in conjunction with processing.
22, the method for utilizing camera head extraction document image as claimed in claim 1, wherein this sign flag is positioned at a side of this shooting bracing frame base leading edge, during this this sign flag of fixture mid point markers align, make the end of an end of this document fixture, and the centre of a first of this camera head aligning this document is sentenced one first image that just extracts this document in alignment with this shooting bracing frame base.
23, the method for utilizing camera head extraction document image as claimed in claim 22, wherein after this camera head obtains this first image of this document, mobile this document fixture, make the front end of a front end of this document fixture, and the centre of a second portion of this camera head aligning this document is sentenced one second image that just extracts this document in alignment with this shooting bracing frame base.
24, the method for utilizing camera head extraction document image as claimed in claim 23, wherein this image processing comprises that keystone is handled, the image of this first image that will be after keystone is handled and this second image combination is in conjunction with handling and image-context is eliminated processing.
25, the method for utilizing camera head extraction document image as claimed in claim 24, wherein this first image comprises first's document image, one first fixture front end image and one first fixture end view picture, this second image comprises a second portion document image, one second fixture front end image and one second fixture end view picture, and this image is according to this first fixture front end image in this first image is combined this first image and this second image with this second fixture front end image congruencing in this second image in conjunction with processing.
26, the method for utilizing camera head extraction document image as claimed in claim 1, wherein this camera head is a camera or a network camera.
27, the method for utilizing camera head extraction document image as claimed in claim 1, wherein this shooting bracing frame is a rigid mount or a notebook that has an angle between a body and base.
28, a kind of method of utilizing camera head extraction document image comprises:
One camera head and a shooting bracing frame are provided, this camera head is arranged on this shooting bracing frame;
Provide a file fixer, in order to clamping one file;
Place this document in this document fixture, this document is held in this document fixture, and this first's front end of this document is aimed at a front end of this shooting bracing frame base, and the terminal end of aiming at this shooting bracing frame base of this first of this document;
Use this camera head that this first of this document is carried out the image extraction;
Obtain one first image, this first image comprises first's document image, one first base front end image and one first base end view picture;
Place this document once more in this document fixture, make this second portion front end of this document aim at a front end of this shooting bracing frame base, and the terminal end of aiming at this shooting bracing frame base of this second portion of this document;
Use this camera head that this second portion of this document is carried out the image extraction;
Obtain one second image, this second image comprises a second portion document image, one second base front end image and one second base end view picture;
To this first and this second image carry out keystone and handle; And
This first image and this second image combination that will be after keystone is handled, wherein the combination of this first image and this second image be according to this first base end view picture in this first image and this second base front end image congruencing in this second image.
29, the method for utilizing camera head extraction document image as claimed in claim 28 comprises that also the complete file image after the combination is carried out image-context eliminates processing.
30, the method for utilizing camera head extraction document image as claimed in claim 28, wherein the long edge lengths of this document equals the twice of this camera head bracing frame base length.
31, the method for utilizing camera head extraction document image as claimed in claim 28, wherein this camera head is a camera or a network camera.
32, the method for utilizing camera head extraction document image as claimed in claim 28, wherein this shooting bracing frame is a rigid mount or a notebook that has an angle between a body and base.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101309089A CN101662561B (en) | 2008-08-29 | 2008-08-29 | Method for extracting document image by pick-up device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101309089A CN101662561B (en) | 2008-08-29 | 2008-08-29 | Method for extracting document image by pick-up device |
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| CN101662561A true CN101662561A (en) | 2010-03-03 |
| CN101662561B CN101662561B (en) | 2011-09-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104125369A (en) * | 2014-06-16 | 2014-10-29 | 常州市武进金阳光电子有限公司 | Scanner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104125369A (en) * | 2014-06-16 | 2014-10-29 | 常州市武进金阳光电子有限公司 | Scanner |
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| CN101662561B (en) | 2011-09-21 |
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