CN102801892B - Aviation image, imaging region recognition positioning method and device - Google Patents
Aviation image, imaging region recognition positioning method and device Download PDFInfo
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- CN102801892B CN102801892B CN201110137588.1A CN201110137588A CN102801892B CN 102801892 B CN102801892 B CN 102801892B CN 201110137588 A CN201110137588 A CN 201110137588A CN 102801892 B CN102801892 B CN 102801892B
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Abstract
The present invention relates to a kind of aviation image, imaging region recognition positioning method, described recognition positioning method comprises the steps: film transport step, by film transport mechanism by film transport to film load carrier；Film white space judges step, carries operating film imaging region and blank position to carry out continuous detecting by multiple optical density sensors to being in, it may be judged whether to there is film white space；Film is sized judging step, adopts whether photoelectric encoder continuous detecting film meets being sized of film；Film puts in place feedback of status step, when described film white space judges to detect the presence of film white space in step, and after described film is sized judging that step detects that meeting film is sized, sends film to control unit and put in place the signal of feedback of status。Based on technique scheme, the present invention can reach quickly and accurately aviation image, imaging region to be identified location purpose。
Description
Technical field
The present invention relates to a kind of recognition positioning method and device, particularly relate to a kind of aviation image, imaging region recognition positioning method and device。
Background technology
Existing scanner has certain large format film scanning function, but in concrete practical application, it also has the disadvantage that
Lack and effectively automatically send sheet positioning function。Operation principle according to existing scanner sensor, current scanner can only individual image of scan process。If needing the continuous film of scanning rolling, then requiring over and manually carry out changing sheet positioning action, this will certainly greatly affect work efficiency。
Additionally, in actual scanning process, the factors such as film interval is uneven, transmittance is different, imaging region is discontinuous, all bring difficulty to the quick and precisely location of film；And film imaging region quick, to be accurately positioned be the fast automatic digitized premise of film。
Summary of the invention
The purpose of the present invention is to propose to a kind of method and apparatus that in automatic transport film process, the imaging region of aerial film can be carried out quickly, accurately identify location。
For achieving the above object, the invention provides a kind of aviation image, imaging region recognition positioning method, described recognition positioning method comprises the steps: film transport step, by film transport mechanism by film transport to film load carrier；Film white space judges step, carries operating film imaging region and blank position to carry out continuous detecting by multiple optical density sensors to being in, it may be judged whether to there is film white space；Film is sized judging step, adopts whether photoelectric encoder continuous detecting film meets being sized of film；Film puts in place feedback of status step, when described film white space judges to detect the presence of film white space in step, and after described film is sized judging that step detects that meeting film is sized, sends film to control unit and put in place the signal of feedback of status。
Preferably, described film white space judges that step also comprises the steps: to obtain multiple luminous fluxes by the detection of multiple optical density sensors；Obtain luminous flux gradient via the variable quantity of each sensor multi collect result, meanwhile, obtain multiple luminous flux gradients by the detection of multiple optical density sensors；Film shift value is obtained by the detection of described photoelectric encoder；Calculated by above-mentioned luminous flux, luminous flux gradient and film shift value and obtain sample white space distance；By described sample white space distance compared with film setpoint distance, it is thus achieved that whether there is the location output result of film white space。
It is highly preferred that when when described sample white space distance is more than film setpoint distance, it is thus achieved that it is absent from the location output result of film white space, now repeats described film white space and judge step。
Preferably, when described sample white space distance is less than film setpoint distance, it is thus achieved that there is the location output result of film white space, now described sample white space distance is white space。
Another object of the present invention is for providing a kind of aviation image, imaging region identification positioner, including having photographic unit and the body of film load carrier, and the control unit being connected with described photographic unit, the film transport mechanism being additionally included on film transport direction to match with size or the film size of described film load carrier, and described film transport mechanism includes photoelectric encoder, and described film load carrier includes multiple optical density sensor。
Preferably, described photoelectric encoder is the increment of rotation formula photoelectric encoder being arranged on described film transport mechanism。
Preferably, described film load carrier include being arranged between described film transport mechanism and camera hold sheet glass and hold above sheet glass and and described holding there is between sheet glass gap and the pressed glass of elevating movement can be carried out by elevating mechanism。
It is highly preferred that described optical density sensor be arranged on described in hold the edge of sheet glass or pressed glass。
Preferably, described film transport mechanism is additionally included in the described least one set idler roller being arranged at described film load carrier upstream and downstream in film transport direction。
Preferably, described photoelectric encoder is arranged on described idler roller。
Based on technique scheme, the present invention is in the process of film transport, by Real-time Collection and the data processing optical density sensor and photoelectric encoder, and multiple sensing datas are carried out according to fusion treatment, the stroke of film in high-speed cruising and the blank position between imaging region are continuously monitored。When detecting that picture switches, control unit controls sequential according to result output。Thus reaching quickly and accurately aviation image, imaging region to be identified location purpose。
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention。In the accompanying drawings:
Fig. 1 is the FB(flow block) of recognition positioning method of the present invention；
Fig. 2 is the FB(flow block) that in Fig. 1, film white space judges step；
Fig. 3 is the structural representation of identification positioner of the present invention；
Fig. 4 is film transport mechanism of the present invention and the structural representation of film load carrier。
Detailed description of the invention
Below by drawings and Examples, technical scheme is described in further detail。
Embodiment 1:
Referring to Fig. 1, illustrated therein is the preferred embodiment of a kind of aviation image of the present invention, imaging region recognition positioning method。Recognition positioning method of the present invention comprises the steps: film transport step, and film transport mechanism is after receiving film transport instruction 10, by film transport to film load carrier 4；Then, carry out film white space and judge that step 20 and film are sized judging step 30。
Wherein, described film white space judges step 20, for carrying operating film imaging region and blank position to carry out continuous detecting by multiple optical density sensors 63 to being in, it may be judged whether there is film white space。If it is determined that there is film white space, then carry out subsequent step；If there is no white space, then repeat this step, carries operating film imaging region and blank position to detect again through optical density sensor 63 to being in。
Described film is sized judging step 30, for adopting whether photoelectric encoder 64 continuous detecting film meets being sized of film。If film meets the size of setting, then carry out subsequent step；If film is unsatisfactory for the size set, then repeats this step, detect whether film meets being sized of film again through photoelectric encoder 64。
It is pointed out that described film white space judges that step 20 and film are sized judging that step 30 is in no particular order, can carry out respectively, it is possible to successively carry out simultaneously；
When film white space judges that step 20 judges there is film white space, and after film is sized judging that step 30 judges the size that film meets setting, carry out film and put in place feedback of status step 40。Namely when described film white space judges to detect the presence of film white space in step 20, and after described film is sized judging that step 30 detects that meeting film is sized, then sends film to control unit (not shown) and put in place the signal of feedback of status。Control unit of the present invention can be the control structure of whole device, it is also possible to for relatively independent identification location control mechanism。
Referring to Fig. 2, it is preferable that described film white space judges that step 20 also comprises the steps: to obtain multiple luminous fluxes 50 by the detection of multiple optical density sensors 63；Obtain luminous flux gradient via the variable quantity of each sensor multi collect result, meanwhile, obtain multiple luminous flux gradients 60 by the detection of multiple optical density sensors；Film displacement 70 is obtained by the detection of described photoelectric encoder 64；Being calculated by above-mentioned luminous flux 50, luminous flux gradient 60 and film displacement 70 and obtain sample white space distance 80, this sample white space distance 80 is Weighted distance at the present embodiment；By described sample white space distance 80 compared with film setpoint distance 90, it is thus achieved that location output result 200。
Further, when described sample white space distance 80 is more than film setpoint distance 90, it is thus achieved that being absent from the location output result 200 of film white space, namely described sample white space distance 80 is image-region, for non-blank-white gap, now repeat described film white space and judge step 30。
When described sample white space distance 80 is less than film setpoint distance 90, it is thus achieved that there is the location output result 200 of film white space, namely now described sample white space distance 80 is white space。
Specifically, the present embodiment adopts the cluster analysis detection algorithm based on weight coefficient, the sampled data of the multiple optical density sensor of real time fusion process, first dissimilar film blank vector value is determined, it is then determined that the percentage contribution that different sensors is in actual film detects determines weight coefficient, calculating the distance between each position vector and white space vector in real time according to weight coefficient, distance being classified by the threshold value set, thus judging whether film arrives the imaging region of image。The relation of image-region and white space in dissimilar photo is depended under practical situation in the definition of distance。
Sample white space of the present invention is distance weighted is:
Wherein:
xi=(xi1, xi2..., xim)T, i=1,2 ..., n is one group of position vector that sensor obtains, and includes the counting (i.e. film displacement) of luminous flux 50, luminous flux gradient 60 and photoelectric encoder that multiple optical density sensor 63 is measured。
K is the weight coefficient of each sensor, selects according to the actual influence of each sensor。Such as big by ectocentral region weight, submarginal sensor weight is slightly smaller, and concrete condition is determined according to experiment experience。
The vector value of dissimilar film white space is determined according to practical situation, and after the weight coefficient in distance calculating, calculate each vector of measuring with blank vectorial distance, classify according to cluster analysis principle, finally it is divided into image-region and white space two class, i.e. the imaging region of recognizable film。
More specifically, suppose there is 3 optical density sensors, under the measurement system situation of 1 photoelectric encoder: each position vector is 7 dimensional vectors, it is respectively 3 light flux values, (measured value range is from all-transparent to completely black 0-100,), 3 luminous flux Grad (measuring scope 0-100 in units of encoder to count pulse), and an encoder to count value (assuming that a secondary film is 0-1860)。According to film situation, set the vector value of a standard null white region as x0=(5,5,5,0,0,0,1680)T, weight is k=(0.5,0.8,0.5,1,1.2,1,0.5), standardization denominator(according to conventional test data range set, data below is also), the threshold value of distance classification is set as d0 2=0.5。
Assume have 2 position vectors, respectively x1And x2:
x1=(38,76,22,9,12,6,1470)T
x2=(6,7,3,2,1,3,1671)T
According to above formula, it is possible to calculated square distance is:
d10 2=11.15
d20 2=0.098
By comparing it appeared that:
d10 2(sample white space distance) > d0 2(film setpoint distance), so, x1For image-region, i.e. non-blank-white gap。
And d20 2(sample white space distance) < d0 2(film setpoint distance), so, x2For white space region。
Embodiment 2:
Referring to Fig. 3 and Fig. 4, there is shown the embodiment of a kind of aviation image of the present invention, imaging region identification positioner, including the body 100 with photographic unit 6 and film load carrier 4, and the control unit being connected with described photographic unit 6, described control unit can be the control unit that identification positioner of the present invention is overall, it is also possible to for identify that positioner entirety control unit is connected or independent controlling organization。The present invention identifies the film transport mechanism 3 that positioner is additionally included on film transport direction to match with size or the film size of described film load carrier 4, and described film transport mechanism includes photoelectric encoder 64, and described film load carrier 4 includes multiple optical density sensor 63。Wherein, described photoelectric encoder 64 is the increment of rotation formula photoelectric encoder being arranged on described film transport mechanism。
Described film load carrier 4 include being arranged between described film transport mechanism and camera hold sheet glass and hold above sheet glass and and described holding there is between sheet glass gap and the pressed glass of elevating movement can be carried out by elevating mechanism。Described optical density sensor 63 holds the edge of sheet glass or pressed glass described in being arranged on。Described film transport mechanism is additionally included in the described least one set idler roller 9 being arranged at described film load carrier 4 upstream and downstream in film transport direction。Described photoelectric encoder 64 is arranged on described idler roller 9。
Specifically, in the present embodiment, it is provided with two idler rollers 9, and the distance between two idler rollers 9 is at about 40cm, all can be scanned by camera meeting maximum film size (32cmx32cm)。Distance between idler roller 9 and adjacent film transmission mechanism 3 is at about 20cm, in order to meet delivery wheel various size requirement。Film transport mechanism 3 is driven by servomotor (not shown), provides the linear velocity (speed is adjustable) of 0-32cm/s for film。In the lower section of two idler rollers 9 from idler roller 2-3mm place for holding sheet glass。Between two idler rollers 9, the surface of film have the pressed glass of one piece of 35cmx35cm, be respectively arranged with a swing angle electric (i.e. elevating mechanism) in the corner of pressed glass, play the effect of lifting pressed glass。
When film is in feed status, pressed glass lifts, and at this moment holds the gap having 5-6mm between sheet glass and pressed glass。Film is carried in the gap of glass by two idler rollers, it is ensured that the basal plane of film is not scratched。After film moves into place stopping, pressed glass is put down by four swing angle electrics startups, and pressed glass is pressed in by deadweight and holds on sheet glass, is clipped in the middle by film。Pacifying glazing purpose has two: one to be to ensure that film level levelling, makes the film depth of field consistent, and two is hold sheet glass can film transport system and camera scanning system be isolated up and down, plays the effect of dust control and noise absorption。
Additionally, in the present embodiment, holding sheet glass right-hand member, multiple optical density (OD) measurement and positioning sensor 63 is installed, in the end of idler roller 9 equipped with increment of rotation formula photoelectric encoder 64, as shown in Figure 2, may determine that two images that location is adjacent, and then control servomotor (not shown) intermittent rotary, reach the purpose of individual location scanning of film。
Finally should be noted that: above example is only in order to illustrate that technical scheme is not intended to limit；Although the present invention being described in detail with reference to preferred embodiment, those of ordinary skill in the field are it is understood that still can modify to the specific embodiment of the present invention or portion of techniques feature carries out equivalent replacement；Without deviating from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention is claimed。
Claims (9)
1. the imaging region recognition positioning method of an aviation image film, it is characterised in that: described recognition positioning method comprises the steps:
Film transport step, by film transport mechanism by film transport to film load carrier；
Film white space judges step, carries operating film imaging region and blank position to carry out continuous detecting by multiple optical density sensors to being in, it may be judged whether to there is film white space；
Film is sized judging step, adopts whether photoelectric encoder continuous detecting film meets being sized of film；
Film puts in place feedback of status step, when described film white space judges to detect the presence of film white space in step, and after described film is sized judging that step detects that meeting film is sized, sends film to control unit and put in place the signal of feedback of status；
Described film white space judges that step specifically includes following steps:
Multiple luminous fluxes are obtained by the detection of multiple optical density sensors；
Obtain luminous flux gradient via the variable quantity of each sensor multi collect result, meanwhile, obtain multiple luminous flux gradients by the detection of multiple optical density sensors；
Film shift value is obtained by the detection of described photoelectric encoder；
Calculated by above-mentioned luminous flux, luminous flux gradient and film shift value and obtain sample white space distance；
By described sample white space distance compared with film setpoint distance, it is thus achieved that whether there is the location output result of film white space。
2. the imaging region recognition positioning method of aviation image film according to claim 1, it is characterised in that: when described sample white space distance is more than film setpoint distance, it is thus achieved that be absent from the location output result of film white space。
3. the imaging region recognition positioning method of aviation image film according to claim 1, it is characterised in that: when described sample white space distance is less than film setpoint distance, it is thus achieved that there is the location output result of film white space。
4. the imaging region identification positioner of an aviation image film, for realizing the imaging region recognition positioning method of the arbitrary described aviation image film of claims 1 to 3, including the body (100) with photographic unit (6) and film load carrier (4), and the control unit being connected with described photographic unit (6), it is characterized in that: the film transport mechanism being additionally included on film transport direction to match with size or the film size of described film load carrier (4), and described film transport mechanism includes photoelectric encoder (64), described film load carrier (4) includes multiple optical density sensor (63)。
5. the imaging region identification positioner of aviation image film according to claim 4, it is characterised in that: described photoelectric encoder (64) is the increment of rotation formula photoelectric encoder being arranged on described film transport mechanism。
6. the imaging region identification positioner of aviation image film according to claim 4, it is characterised in that: described film load carrier (4) include being arranged between described film transport mechanism and camera hold sheet glass and hold above sheet glass and and described holding there is between sheet glass gap and the pressed glass of elevating movement can be carried out by elevating mechanism。
7. the imaging region identification positioner of aviation image film according to claim 6, it is characterised in that: described optical density sensor (63) be arranged on described in hold the edge of sheet glass or pressed glass。
8. the imaging region identification positioner of aviation image film according to claim 4, it is characterised in that: described film transport mechanism is additionally included in the described least one set idler roller (9) being arranged at described film load carrier (4) upstream and downstream in film transport direction。
9. the imaging region identification positioner of aviation image film according to claim 8, it is characterised in that: described photoelectric encoder (64) is arranged on described idler roller (9)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110137588.1A CN102801892B (en) | 2011-05-26 | 2011-05-26 | Aviation image, imaging region recognition positioning method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110137588.1A CN102801892B (en) | 2011-05-26 | 2011-05-26 | Aviation image, imaging region recognition positioning method and device |
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| Publication Number | Publication Date |
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| CN102801892A CN102801892A (en) | 2012-11-28 |
| CN102801892B true CN102801892B (en) | 2016-06-22 |
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Citations (6)
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|---|---|---|---|---|
| CN1115389A (en) * | 1994-03-16 | 1996-01-24 | 诺日士钢机株式会社 | Automatic film feeder |
| CN1163421A (en) * | 1996-04-19 | 1997-10-29 | 富士写真胶片株式会社 | Film scanner and its read-out method |
| CN1236904A (en) * | 1998-02-04 | 1999-12-01 | 格雷塔格成象公司 | Photoelectric scanning device and copier equipped therewith |
| CN1256436A (en) * | 1998-12-07 | 2000-06-14 | 伊斯曼柯达公司 | Small apparatus for thermal sensitive film developing and scanning |
| CN1286409A (en) * | 1999-08-26 | 2001-03-07 | 戈莱泰格成像贸易股份公司 | Optoelectronic scanning device for photographic film |
| CN101150671A (en) * | 2006-09-14 | 2008-03-26 | 汤姆森特许公司 | Film scanner and detection apparatus therefor |
-
2011
- 2011-05-26 CN CN201110137588.1A patent/CN102801892B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1115389A (en) * | 1994-03-16 | 1996-01-24 | 诺日士钢机株式会社 | Automatic film feeder |
| CN1163421A (en) * | 1996-04-19 | 1997-10-29 | 富士写真胶片株式会社 | Film scanner and its read-out method |
| CN1236904A (en) * | 1998-02-04 | 1999-12-01 | 格雷塔格成象公司 | Photoelectric scanning device and copier equipped therewith |
| CN1256436A (en) * | 1998-12-07 | 2000-06-14 | 伊斯曼柯达公司 | Small apparatus for thermal sensitive film developing and scanning |
| CN1286409A (en) * | 1999-08-26 | 2001-03-07 | 戈莱泰格成像贸易股份公司 | Optoelectronic scanning device for photographic film |
| CN101150671A (en) * | 2006-09-14 | 2008-03-26 | 汤姆森特许公司 | Film scanner and detection apparatus therefor |
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| CN102801892A (en) | 2012-11-28 |
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