CN101184171A - Digitization system of video film - Google Patents
Digitization system of video film Download PDFInfo
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- CN101184171A CN101184171A CNA2007101685006A CN200710168500A CN101184171A CN 101184171 A CN101184171 A CN 101184171A CN A2007101685006 A CNA2007101685006 A CN A2007101685006A CN 200710168500 A CN200710168500 A CN 200710168500A CN 101184171 A CN101184171 A CN 101184171A
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Abstract
The invention relates to an image film digitizing system, belonging to the application field of achieving the digital image, which comprises a top cover and a base. A light source panel is embedded in the top cover with the luminous surface facing the base. Inside the base an object-carrying panel, a light absorption panel, an image collection device, a slide bar, a slide way, a groove, a first stepping motor and a second stepping motor, a scanning controller and a transmission interface are positioned. The control parameter input module and an image processing device are internally positioned or externally connected. The invention is characterized in that an array image collection device is adopted to carry out film scanning and sampling based on the traditional transmission scanning technology. The device can move along two vertical directions of the scanning surface and can carry out area selective scanning through setting the scanning area and the scanning amplitude. The invention sends the image data collected each time to the image processing software to carry out splicing, brightness correction and the modification of the optical distortion. Finally the complete scanning image is finished and the image film digitalization is completed.
Description
Technical field
The invention belongs to the application of digital picture acquisition methods, be specifically related to the digitization system of image film, this system can be transformed into the corresponding digital image by transmission scan with image film, is particularly useful for the processing of medical image film.
Background of invention
Along with arrival of information age, some brand-new digitized image technology (as CT, MRI etc.) are applied to clinical successively, simultaneously, along with popularizing and the clinical practice of high-speed communication technology and means of the development of medical technology and computer, novel medical procedure such as computer-aided diagnosis, remote medical consultation with specialists, the noncontact consultation of doctors and technology obtain application more and more widely.These are used mostly based on Computer Image Processing, graphical analysis and long-range technology such as share, thereby make that the digitized demand of medical image film is quite urgent.
The film scanning digitizer is to be film the instrument of digital picture through the image scanning technical transform.At present, occurred many small size film scanning digitizer products on the market, mostly be used for the colored slightly digital scanning of film, and the medical film scan digitizer has generally adopted the linear method for scanning of transmittance, equipment cost is higher.
Medical film has following feature:
1. gray scale image;
2. the film quality is thick;
3. film size is big, surpasses common A4 breadth usually;
4. image gray levels is abundant, the resolution height.
Common light reflective scanning mode digitizer can not satisfy the digitlization demand of medical film, and digitlization is very necessary to the medical scan digitizer of the special use of economy at a high speed for medical film.
At present special-purpose medical film scan digitizer has two kinds of the flat and drum-types of A3 breadth, generally adopt the method for transmittance formula linear scan to realize the film digitlization, wherein A3 breadth flat bed scanning digitizer is bulky, scan film size-constrained, and drum-type scan digitizer complex structure, and cost an arm and a leg (tens thousand of units are to hundreds of thousands yuan/platform).
Summary of the invention
The object of the present invention is to provide a kind of image film digitization system, this system has solved the limited and expensive problem of existing medical film scan digitizer sweep limits, can flexibly gated sweep scope, scan the image film of different size fast and carry out the digitized processing of film.
Image film digitization system provided by the invention is characterized in that: loam cake and the base housing that constitutes by an active connection, be embedded with the light source panel in the loam cake, and its light-emitting area is towards the base direction; The Control Parameter input module is used to provide the user to set the interface of Control Parameter;
The loading panel is a transparent panel, is positioned at the superiors of base, and and the upper side frame of base between seal; The extinction panel is positioned at the below of loading panel and parallel with it, is provided with two parallel slideways between loading panel and the extinction panel, between two slideways slide bar is installed, and a side of slide bar is provided with chute, in the image collecting device embedding chute; Scanning monitor and first, second stepping motor are all between the base plate of extinction panel and base, scanning monitor links to each other with first stepping motor, controls the first stepping driven by motor slide bar according to the Control Parameter of setting in the Control Parameter input module and moves on slideway; Scanning monitor also links to each other with second stepping motor, controls second stepping motor drive image collecting device according to the Control Parameter of setting in the Control Parameter input module and moves on chute;
Coffret links to each other with image collecting device and image processing apparatus respectively, the image digital signal of image collecting device collection is sent to image processing apparatus handles.
Photosensitive unit is arranged as the master with wire in traditional film scanning digitizer image collecting device, adopt scan mode line by line, the increase of the maximum breadth width that the number of its photosensitive unit can be supported along with scanning system and increasing, so the total cost of sensitive component is higher in the film scanning system of large format.Use the photosensitive unit of less fixed qty in the image collecting device of the present invention, make it with array format.In image acquisition process, the physics length and width that this device can begin on two orthogonal directions respectively with the image block of single acquisition from the film arbitrary region is that step-length moves, realize array scanning, and satisfy the scanner uni digitlization requirement of different book size films by the displacement (sweep amplitude) of control on all directions, when ensureing quality of scanning, save the cost on sensitive component, thereby reduced the total cost of whole film digitization system.
Description of drawings
Fig. 1 is the housing schematic diagram of image film digitization system of the present invention;
Fig. 2 is the light source panel schematic diagram of image film digitization system of the present invention;
Fig. 3 is the base build-in components structural representation of image film digitization system of the present invention;
Fig. 4 is the process chart of image processing apparatus of the present invention;
Fig. 5 is the image collecting device schematic diagram of the embodiment of the invention;
Fig. 6 is the course of work flow chart of the embodiment of the invention.
Embodiment
As shown in Figure 1, the structure of image film digitization system of the present invention is: loam cake 1 and base 2 housing that constitutes by an active connection.Be embedded with light source panel 3 in the loam cake 1, its light-emitting area can be launched the even light (as shown in Figure 2) perpendicular to the upper surface of base 2 towards base 2 directions.As shown in Figure 3, in base 2, be provided with loading panel 4, extinction panel 5, image collecting device 6, slide bar 7, slideway 8, chute 9, first stepping motor 10, second stepping motor 11, scanning monitor 12 and coffret 14.Control Parameter input module 13 and image processing apparatus 15 are positioned at embedded chip of film digitization system or external computer.
Loading panel 4 is a transparent panel, is positioned at the superiors of base 2, and and the upper side frame of base 2 between seal, other parts that are positioned at base 2 are closed.Loading panel 4 is used to place film to be scanned, and extinction panel 5 is positioned at the below of loading panel 4 and parallel with it, is used to absorb the light that film is crossed in transmission, reduces the influence of reverberation to IMAQ; Be provided with two parallel slideways 8 (as chute or track) between loading panel 4 and the extinction panel 5, slide bar 7 is installed between two slideways, a side of slide bar 7 is provided with chute 9, and image collecting device 6 embeds in the chutes 9.Control Parameter input module 13 comprises the inputting interface of sweep amplitude, scanning resolution and scanning area position for the user provides Control Parameter; The scanning monitor 12 and first stepping motor 10, second stepping motor 11 are all between the base plate of extinction panel 5 and base 2, scanning monitor 12 links to each other with first stepping motor 10, and controlling first stepping motor 10 according to the Control Parameter of setting in the Control Parameter input module 13, to drive slide bars 7 physical width with the image block of image collecting device 6 single acquisition on slideway 8 be that step-length moves; Scanning monitor 12 also links to each other with second stepping motor 11, and controlling second stepping motor 11 according to the Control Parameter of setting in the Control Parameter input module 13, to drive image collecting devices 6 physical length with the image block of image collecting device 6 single acquisition on chute 9 be that step-length moves; Coffret 14 links to each other with image collecting device 6 and image processing apparatus 15 respectively, and the image digital signal that image collecting device 6 is gathered is sent to image processing apparatus 15 and handles.
When native system uses, at first open outer casing upper cover 1, film is faced up be close to 4 placements of loading panel, close outer casing upper cover 1; Start pre-scanning process, according to the sweep parameter of system default be provided with film fast scanning obtain preliminary scanning result (result of prescan need not correct and the correction of picture distortion through image brightness); Result according to prescan sets current sweep amplitude, scanning resolution and scanning area Position Control parameter in Control Parameter input module 13; Then, start formal scanning process, scanning monitor 12 is controlled first stepping motor, 10 drive slide bars 7 by the sweep parameter of setting and is moved on slideway 8, while scanning monitor 12 is also controlled second stepping motor, 11 drive image collecting devices 6 by the sweep parameter of setting and is moved on chute 9, whenever move to a reposition image collecting device 6 and just carry out the collection of image digital signal, coffret 14 is sent to image processing apparatus 15 with the signal of gathering then; Image processing apparatus 15 is finished the function that data buffering, image splicing, image brightness correction, image optical distortion correction, image storage and image are exported according to handling process shown in Figure 4, finally finishes the digital scan of film.
Embodiment:
Be digitized as example with X-ray film below enforcement of the present invention is described in further detail, the present invention is equally applicable to the negative film that other image films such as CT image printing film and nuclear-magnetism image printing film and commonness photograph use etc.
The shell that utilizes metal or plastic material to make the film digitization system makes it to have loam cake 1 and base 2, light source panel 3 adopts and is arranged in parallel by one group of cold-cathode fluorescence lamp, add translucent light source flat runner composition, can launch even directional light perpendicular to light source panel 3.Loading panel 4 adopts the glass material of good transmittance to process, and and the upper side frame of base 2 between seal, other parts that are positioned at base 2 are closed; The black light-absorbing material is coated on the surface of extinction panel 5, is used to absorb the light that transmits from film, reduces the influence of reverberation to IMAQ; Be provided with two parallel polishing metal slideways 8 (as chute or track) between loading panel 4 and the extinction panel 5, slide bar 7 is installed between two slideways, a side of slide bar 7 is provided with polishing metal chute 9, and image collecting device 6 embeds in the chutes 9; As shown in Figure 5, image collecting device 6 is by optical lens 22, CCD light sensor 23 (wherein photosensitive unit is arranged in 20 * 20 array) and A/D converter 24 are formed, wherein optical lens 22 is parallel with it towards loading panel 4 and its focal plane, be used to gather the transmitted light of the film area of vertical direction, CCD light sensor 23 be positioned at after the camera lens and the photosensitive unit array plane parallel with its focal plane, can generate the signal of telecommunication of respective strengths according to the photoinduction signal that camera lens is gathered, A/D converter 24 is connected the electrical signal conversion that is used for gathering with CCD light sensor 23 be digital signal; Control Parameter input module 13 is arranged in external computer, and the user can set Control Parameter in Control Parameter input module 13, comprises sweep amplitude, scanning resolution and scanning area position; The scanning monitor 12 and first stepping motor 10, second stepping motor 11 are all between the base plate of extinction panel 5 and base 2, scanning monitor 12 links to each other with first stepping motor 10, and controlling first stepping motor 10 according to the Control Parameter of setting in the Control Parameter input module 13, to drive slide bars 7 physical width with the image block of image collecting device 6 single acquisition on slideway 8 be that step-length moves; Scanning monitor 12 also links to each other with second stepping motor 11, and controlling second stepping motor 11 according to the Control Parameter of setting in the Control Parameter input module 13, to drive image collecting devices 6 physical length with the image block of image collecting device 6 single acquisition on chute 9 be that step-length moves; Coffret 14 links to each other with image collecting device 6 and image processing apparatus 15 respectively, and the image digital signal that image collecting device 6 is gathered is sent to image processing apparatus 15 and handles.Image processing apparatus 15 is realized by image processing software.
As shown in Figure 6, the course of work of system of the present invention is divided into following 5 steps:
(1) lays film: open outer casing upper cover 1, film is faced up be close to 4 placements of loading panel, close outer casing upper cover 1;
(2) prescan: start pre-scanning process, be provided with according to the sweep parameter of system default film is carried out digitized image after quick prescan (digitized image of prescan need not be corrected and the correcting process of picture distortion through image brightness) obtains preliminary scanning;
(3) sweep parameter control and regulating: the effect according to the digitized image of prescan need to determine whether the setting of current sweep amplitude, scanning resolution and reference scanning position parameter of change.When Control Parameter input module 13 and image processing apparatus 15 employing computer realization, carry out parameter modification if desired, in Control Parameter input module 13, can set above parameter by the selection of drop-down menu on input of the position on the mouse specify image, keyboard or the software interface, for example sweep limits for 2 of appointment for angular vertex, limit being parallel to the rectangular area on scan digitizer border;
(4) image scanning: start formal scanning process, the scan control thread is finished the process of film being carried out digital signal acquiring, and concrete steps are described as follows:
(4.1) step motor control: first stepping motor 10, the sweep parameter that second stepping motor 11 is set according to step (3) drives slide bar 7 respectively and moves with image collecting device 6, concrete grammar is: whether detected image harvester 6 moves to the upper limit of sweep amplitude, then image collecting device 6 is not moved a step-length (following 20 the pixel corresponding physical distance of maximum natural image resolution) to the next position along chute 9 if do not reach this capping, otherwise detect slide bar 7 and whether reach the sweep amplitude upper limit, then slide bar 7 is not moved a step-length (following 20 the pixel corresponding physical distance of maximum natural image resolution) to the next position if do not reach this capping, image collecting device 6 moves backwards to the next position along chute 9, otherwise finishes the scan control thread;
(4.2) image digital signal collection: image collecting device 6 is gathered the film image digital signal in current location vertical direction zone;
(4.3) image digital signal is uploaded: the digital signal that collects sends image processing apparatus 15 to by coffret 14, changes step (4.1);
(5) image processing: the image digital signal that the image processing thread is responsible for gained is collected carries out a series of image processing work.Concrete steps are described as follows:
(5.1) data are saved in data buffer area: the digital signal of each scanning is sent to view data buffer module 16 by coffret 14 and preserves;
(5.2) image splicing: if the buffer queue in the view data buffer module 16 be empty, then get the data of formation stem correspondence, and be sent to image concatenation module 17 and directly splice commentaries on classics step (5.2) by the coordinate of IMAQ; Otherwise splicing is finished, and changes step (5.3);
(5.3) brightness and contrast proofreaies and correct: image brightness is corrected module 18 spliced image is carried out the brightness correction, concrete grammar adopts with complete transmission image (being the null images that scans when not putting image film on the objective table) and compares, uneven pixel in the pairing complete transmission image of spliced image is carried out brightness regulation (if system source reaches the requirement of ideal uniform degree, this step then can be omitted);
(5.4) lens distortion calibration: the image after image optical distortion correcting module 19 is corrected brightness carries out the correction of optical distortion according to the binary polynomial method;
(5.5) image is preserved: image memory module 20 is responsible for revised image is carried out the physics storage, in order to user's needs;
(5.6) image output: image output module 21 can be carried out the demonstration or the printing of image according to customer requirements.
Claims (2)
1. image film digitization system is characterized in that: loam cake (1) and base (2) housing that constitutes by an active connection, be embedded with light source panel (3) in the loam cake (1), and its light-emitting area is towards base (2) direction; Control Parameter input module (13) is used to provide the user to set the interface of Control Parameter;
Loading panel (4) is a transparent panel, is positioned at the superiors of base (2), and and the upper side frame of base (2) between seal; Extinction panel (5) is positioned at the below of loading panel (4) and parallel with it, be provided with two parallel slideways (8) between loading panel (4) and the extinction panel (5), slide bar (7) is installed between two slideways, one side of slide bar (7) is provided with chute (9), and image collecting device (6) embeds in the chute (9); Scanning monitor (12) and first, second stepping motor (10,11) all are positioned between the base plate of extinction panel (5) and base (2), scanning monitor (12) links to each other with first stepping motor (10), controls first stepping motor (10) drive slide bar (7) according to the Control Parameter of setting in the Control Parameter input module (13) and goes up mobile at slideway (8); Scanning monitor (12) also links to each other with second stepping motor (11), and (11 drive image collecting device (6) goes up mobile at chute (9) to control second stepping motor according to the Control Parameter of setting in the Control Parameter input module (13);
Coffret (14) links to each other with image collecting device (6) and image processing apparatus (15) respectively, and the image digital signal that image collecting device (6) is gathered is sent to image processing apparatus (15) and handles.
2. system according to claim 1 is characterized in that: image processing apparatus (15) comprises view data buffer module (16), image concatenation module (17), image brightness correction module (18), image optical distortion correcting module (19), image memory module (20) and the image output module (21) that connects successively; View data buffer module (16) is used for the view data that the memory scanning process is gathered, and send image concatenation module (17) to, image concatenation module (17) is spliced into a complete scan image with all images matrix data that collects, send image brightness to and correct module (18), image brightness is corrected module (18) spliced image is carried out the brightness correction that the incomplete uniformity of light source causes, and sends image optical distortion correcting module (19) to; Image optical distortion correcting module (19) is used for image is carried out the correction of optical distortion, and image sends image memory module (20) to after will revising; Image memory module (20) is used for the memory scanning result, uses for the user; Image output module (21) can be carried out the demonstration or the printing of image according to customer requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101685006A CN101184171A (en) | 2007-11-28 | 2007-11-28 | Digitization system of video film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101685006A CN101184171A (en) | 2007-11-28 | 2007-11-28 | Digitization system of video film |
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| CN101184171A true CN101184171A (en) | 2008-05-21 |
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| CNA2007101685006A Pending CN101184171A (en) | 2007-11-28 | 2007-11-28 | Digitization system of video film |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957915A (en) * | 2010-09-16 | 2011-01-26 | 北京优纳科技有限公司 | Calligraphy and painting scanning equipment and identification method |
| CN108593686A (en) * | 2018-04-19 | 2018-09-28 | 云南电网有限责任公司电力科学研究院 | A kind of x-ray imaging method and device |
| CN111598880A (en) * | 2020-05-19 | 2020-08-28 | 上海杏脉信息科技有限公司 | Fluorescence in situ hybridization sample pathological detection system |
| CN117764888A (en) * | 2024-02-22 | 2024-03-26 | 西安好思达康复器具有限公司 | scoliosis scanning and taking processing method and device |
-
2007
- 2007-11-28 CN CNA2007101685006A patent/CN101184171A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957915A (en) * | 2010-09-16 | 2011-01-26 | 北京优纳科技有限公司 | Calligraphy and painting scanning equipment and identification method |
| CN108593686A (en) * | 2018-04-19 | 2018-09-28 | 云南电网有限责任公司电力科学研究院 | A kind of x-ray imaging method and device |
| CN111598880A (en) * | 2020-05-19 | 2020-08-28 | 上海杏脉信息科技有限公司 | Fluorescence in situ hybridization sample pathological detection system |
| CN117764888A (en) * | 2024-02-22 | 2024-03-26 | 西安好思达康复器具有限公司 | scoliosis scanning and taking processing method and device |
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