CN1344966A - Image positioning method for digital video camera - Google Patents
Image positioning method for digital video camera Download PDFInfo
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- CN1344966A CN1344966A CN 00124611 CN00124611A CN1344966A CN 1344966 A CN1344966 A CN 1344966A CN 00124611 CN00124611 CN 00124611 CN 00124611 A CN00124611 A CN 00124611A CN 1344966 A CN1344966 A CN 1344966A
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Abstract
The image positioning method for digital video camera is to translate the central line of the imaged area of the image sensor from its geometric central line to the center of the optical axis so as to make the practical central line of the imaged area of the image sensor coincide with the central line of the lens optical line while maintaining the relative positions of the elements unchanged, such as image sensor, lens and lens base of the digital video camera.
Description
The present invention relates to the method for the location of image in a kind of digitized video camera head, the method that particularly a kind of center line that can make camera lens fast and the central lines of image sensor are located.
It is different that its principle of digitized video camera head and traditional image camera head almost do not have, and is equally to utilize optical lens that the luminous energy of object reflection is focused on the inside of image camera head, and both difference are the media difference that is seen through.Tradition image camera head is to utilize light to be subjected to light by the emulsion of egative film, with photologging on egative film; The digitized video camera head then is to utilize sensitization coupling element (Charge CoupledDevice CCD) or complementary matal-oxide semiconductor (Complementary Metal, OxideSemiconductor, CMOS) as image sensor with sensing image, and be digital signal with the transform light energy that object reflected, be stored in after the compression on the inner memory chips (RAM) or portable PC card.
The geometric center lines of image sensor is the optical centreline of shooting imagery zone in the Typical Digital image camera head, when making the digitized video camera head, sticking brilliant, the image sensor assembling, in the processes such as camera lens and lens mount assembling, its each element and assembling process all can form assembly error to a certain degree, make that camera lens often can't be over against image sensor (promptly, the optical axis center line of camera lens does not overlap with the optical centreline of shooting imagery zone in the image sensor), the situation of stravismus when causing the digitized video camera head to use, as shown in Figure 1, the geometric center lines 120 of shooting imagery zone is positioned at the left of camera lens optical axis center line 130 in the image sensor 100, and image sensor 100 senses right-hand object 140 of camera lens 110.As shown in Figure 2, the geometric center lines 120 of shooting imagery zone is positioned at the right-hand of camera lens optical axis center line 130 in the image sensor 100, and image sensor 100 senses the object 140 of camera lens 110 lefts.
In order to make image sensor 100 sense the object in camera lens 110 dead aheads, the manufacture method of existing image camera head is to adjust each related elements position to each other, for example change the relevant position of camera lens 110, lens mount even adjust the position of image sensor 100 on circuit board, make the optical axis center 130 of camera lens 110 to overlap mutually, and the light of camera lens 110 dead ahead objects 140 reflect focalizations drop on the central area and the photosensitive imaging of image sensor 100 just with the image center of image sensor 100.As shown in Figure 3, the geometric center lines 120 of shooting imagery zone coincides with camera lens optical axis center line 130 in the image sensor 100, and image sensor 100 senses the object 140 in camera lens 110 dead aheads.Yet, some shortcoming of adjustment way of existing machinery formula, for example the degree of accuracy of mechanical type position of components adjustment is limited, (adjusting distance is unit with image picture element pixel) not only unusual difficulty but also need the quite long working time in the process of manufacturing test digitized video camera head is adjusted in the trickle position of doing image location with this kind method, increases the manufacturing cost of digitized video camera head.
The method that the purpose of this invention is to provide image location in a kind of digitized video camera head, each element position relation to each other in its uncomfortable integer word image camera head, promptly keep the relative position of each element after assembling, and make camera lens over against image sensor, promptly the image sensor image of making a video recording is the object in camera lens dead ahead.
The object of the present invention is achieved like this: the digitized video camera head with an image sensor and a camera lens is provided, this camera lens is that the image that an object reflects is focused on this image sensor, and the luminous energy that this image sensor is changed this image is an electronic signal; On this image sensor, set first reference point; A specific pattern that provides tool one to indicate point is presented on this image sensor; Setting this sign point display position on this image sensor is second reference point; Write down the relative position relation of first reference point and the second reference point point-to-point transmission; Store this relative position relation.Above-mentionedly comprise the following step in first reference point of setting on the image sensor: set the first shooting imagery zone on this image sensor, center of this first shooting imagery zone is the geometric center position of this image sensor; With a direction setting first reference point apart from this first shooting imagery zone optical centre position.Above-mentioned position relation is an air line distance and a horizontal sextant angle or a vertical angle.Above-mentioned position relation is a horizontal linear distance and a vertical line distance.Above-mentioned specific pattern is presented at the second shooting imagery zone of image sensor, and this second shooting imagery zone is identical with the first shooting imagery zone size.Above-mentioned second reference point has in the second shooting imagery zone and this first reference point identical position relation in the first shooting imagery zone.The above-mentioned relative position relation that oneself stores is used for the image shooting center of image sensor in this digitized video camera head of translation.Above-mentioned first reference point is set the center that is positioned at the first shooting imagery zone.Above-mentioned second reference point is positioned at the center of the second shooting imagery zone.The image shooting center of image sensor is to move to second reference point from first reference point in the above-mentioned translation digitized video camera head.The first above-mentioned reference point and the relative position relation of the second reference point point-to-point transmission are an air line distance and a horizontal sextant angle or a vertical angle.The first above-mentioned reference point and the relative position relation of the second reference point point-to-point transmission are a horizontal linear distance and a vertical line distance.Above-mentioned relative position relation is stored in the image sensor inside of digitized video camera head.Above-mentioned relative position relation is stored in the storer of digitized video camera head.Above-mentioned relative position relation is stored in a controller inside of digitized video camera head.Above-mentioned relative position relation is stored on the circuit component of digitized video camera head.Above-mentioned image camera head comprises an image controller of handling the electronic signal that this image sensor changes.Above-mentioned image controller reads the relative position relation of storage.Above-mentioned image controller is chosen a part of signal of this electronic signal with this relative position relation, and this part signal is the signal of video signal in the second shooting imagery zone of image sensor.
Each element of the uncomfortable integer word of the present invention image camera head position relation to each other, promptly keep the relative position of each element of digitized video camera head after assembling, but the shooting imagery zone center line of translation image sensor goes to the optical axis center line position of camera lens from the geometric center line position of image sensor, make the optical centreline and the camera lens optical axis central lines of actual shooting imagery zone in its image sensor, reached the purpose of digitized video camera head location image, promptly the image sensor image of making a video recording is the object in camera lens dead ahead.
The present invention is further detailed explanation below in conjunction with accompanying drawing.
Fig. 1 describes the vertical view of the right-hand image of image sensor sensing camera lens for the present invention.
Fig. 2 describes the vertical view of image sensor sensing camera lens left image for the present invention.
Fig. 3 describes the vertical view of image sensor sensing camera lens dead ahead image for the present invention.
Fig. 4 describes the front elevation of the first shooting imagery zone in the image sensor for the present invention.
Fig. 5 describes the first shooting imagery zone of image sensor and the front elevation of the second shooting imagery zone for the present invention.
Fig. 6 describes the vertical view of image location back image sensor and camera lens for the present invention.
Fig. 7 describes the front elevation of first reference point and second reference point of image display for the present invention.
As shown in Figure 4, be the image sensor 100 of digitized video camera head.As Figure 1-3, this image sensor 100 sees through the luminous energy of camera lens 110 object sensings 140 reflect focalizations and is converted to electronic signal.The image localization step is as described below between image sensor 100 and the camera lens 110:
As shown in Figure 4, the geometric center lines 120 of image sensor 100 in the digitized video camera head is set at the optical centreline (geometric center lines 120 of image sensor 100 is the optical centreline of the first shooting imagery zone 160 in the existing digitized video camera head) of the first shooting imagery zone 160, and setting any point is first reference point 170 in this first shooting imagery zone 160.There is a position relation optical centre position of this first reference point 170 and the first shooting imagery zone 160, for example at a distance of a specified level distance and a particular vertical, perhaps at a distance of a specific range and a specific level or a vertical angle.
Generally speaking, because the manufacturing assembly error is arranged, the geometric center lines 120 of image sensor 100 does not overlap with the optical axis center line 130 of camera lens 110 in the digital camera device.Therefore, first reference point 170 does not also overlap with second reference point 190.As shown in Figure 5, write down the relative position relation of this first reference point 170 and these second reference point, 190 point-to-point transmissions, this relative position relation can be the horizontal range X and the vertical range Y of this point-to-point transmission, or the distance R of this point-to-point transmission and relations such as horizontal sextant angle θ or vertical angle ψ.
Store above-mentioned relative position relation, it can be stored in the shadow memory of image sensor 100 inside, digitized video camera head of this numeral shadow word camera head, on the image controller inside or the circuit component of digitized video camera head of digitized video camera head, the information of handling as follow-up image shooting.
Fig. 6 describes the image shooting center of image sensor 100 in this digitized video camera head of relative position relation translation that utilizes above-mentioned storage.Promptly, the image shooting center that resets image sensor 100 from the optical centre position of the first shooting imagery zone 160 (promptly, the geometric center lines 120 of image sensor 100) to second the shooting imagery zone 180 optical centre 200 positions (promptly, the optical centreline of image sensor 100 actual shooting imagery zones), reach the purpose of digitized video camera head location image.
With an embodiment, one digitized video locating test device can be provided, it comprises: one in order to sensing image and be converted to sensing element, a signal connection device of electronic output signal, connect sensing element in order to transmit this electronic signal, an image display 210, demonstrate after it connects signal connection device and receives its electronic signal of transmitting this electronic signal representative image.
As shown in Figure 7, set first reference point 270 on this image display 210, the specific pattern that provides a band to indicate point is imaged on the image display 210 in the digitized video locating test device it.Wherein, this indicates point by this sensing element and signal connection device, is imaged on first reference point 270 of image display 210.Fixing and keep correspondence position between this digitized video locating test device and this specific pattern, make that the sign point of this specific pattern all can be presented at the position of first reference point 270 when repeating the image positioning step of digitized video camera head on the image display 210 of this proving installation.
When carrying out digitized video camera head image location, this digitized video camera head is installed on this proving installation, make this specific pattern by the image sensor 100 of this digitized video camera head, the sensing element and the signal connection device of proving installation, be presented on the image display 210 of proving installation.Suppose each element assembling accurate (for example, image sensor 100, camera lens 110 and lens mount etc.) of this digitized video camera head, then the sign point of this specific pattern still is shown in the position of these image display 210 first reference point 270.If each element of this digitized video camera head is accumulated the assembling position error in assembling process, then the optical axis center line 130 of digitized video camera head lens 110 does not overlap with the geometric center lines 120 of its image sensor 100, so the sign of specific pattern point can't be shown in first reference point 270 of image display 210, but be shown in another point in this display device 210, setting this point is second reference point 290.
Shown first reference point 270 and second reference point 290 position relation between the two on the recording image display device 210, for example, the horizontal range X of point-to-point transmission and vertical range Y, the air line distance R of point-to-point transmission and its horizontal sextant angle θ or vertical angle ψ etc., and concern in the translation digitized video camera head optical centre position of shooting imagery zone on the image sensor 100 with this position, the optical centreline of actual shooting imagery zone in the image sensor 100 is overlapped, to present the object 140 in digitized video camera head lens 110 dead aheads with camera lens optical axis center line 130.
The digitized video camera head can be gathered the overall image that image sensor 100 is responded in the digitized video camera head earlier, reads the above-mentioned relation of storage location with an image controller.And according to this position relation selected part signal of video signal in the overall image that image sensor 100 is responded to only, the electronic signal of the image representative in the promptly actual shooting imagery zone, reach the purpose of digitized video camera head location image, present the object 140 in digitized video camera head lens 110 dead aheads.
In force, can set first reference point 270 and be the center of image display 210.When image is located, the sign point that only need utilize specific pattern is presented on second reference point 290 on the image display 210 by the digitized video camera head, reset this second reference point 290 and get final product (that is the center of the imagery zone of, making a video recording on the image sensor 100 moves to afterwards second reference point 190 by the first original reference point 170) for the optical centre position of shooting imagery zone on the image sensor 100 in the digitized video camera head.
Claims (19)
1, the method for image location in a kind of digitized video camera head, it is characterized in that: it comprises following steps:
A, provide the digitized video camera head with an image sensor and a camera lens, this camera lens is with an object
One image of reflection focuses on this image sensor, and this image sensor is changed the light of this image
Can be an electronic signal;
B, on this image sensor, set first reference point;
C, provide with a specific pattern that indicates point and be presented on this image sensor;
D, to set this sign point display position on this image sensor be second reference point;
E, write down the relative position relation of this first reference point and this second reference point point-to-point transmission;
F, store this relative position relation.
2, the method for image location in the digitized video camera head as claimed in claim 1, it is characterized in that: above-mentioned first reference point of setting on image sensor comprises the following step:
A, on this image sensor, set the first shooting imagery zone, in this first shooting imagery zone
Heart position is the geometric center position of this image sensor;
B, to set first ginseng apart from position relation of this first shooting imagery zone optical centre position
Examination point.
3, the method for image location in the digitized video camera head as claimed in claim 2, it is characterized in that: above-mentioned position relation is an air line distance and a horizontal sextant angle or a vertical angle.
4, the method for image location in the digitized video camera head as claimed in claim 2 is characterized in that: above-mentioned position relation is a horizontal linear distance and a vertical line distance.
5, the method for image location in the digitized video camera head as claimed in claim 2 is characterized in that: above-mentioned specific pattern is presented at the second shooting imagery zone of image sensor, and this second shooting imagery zone is identical with the first shooting imagery zone size.
6, the method for image location in the digitized video camera head as claimed in claim 5 is characterized in that: above-mentioned second reference point has in the second shooting imagery zone and this first reference point identical position relation in the first shooting imagery zone.
7, the method for image location in the digitized video camera head as claimed in claim 1 is characterized in that: the above-mentioned relative position relation that has stored is used for the image shooting center of image sensor in this digitized video camera head of translation.
8, the method for image location in the digitized video camera head as claimed in claim 7, it is characterized in that: above-mentioned first reference point is set the center that is positioned at the first shooting imagery zone.
9, the method for image location in the digitized video camera head as claimed in claim 8, it is characterized in that: above-mentioned this second reference point is positioned at the center of the second shooting imagery zone.
10, the method for image location in the digitized video camera head as claimed in claim 9, it is characterized in that: the image shooting center of image sensor moves to second reference point from first reference point in the above-mentioned translation digitized video camera head.
11, the method for image location in the digitized video camera head as claimed in claim 1, it is characterized in that: first above-mentioned reference point and the relative position relation between second reference point are an air line distance and a horizontal sextant angle or a vertical angle.
12, the method for image location in the digitized video camera head as claimed in claim 1 is characterized in that: first above-mentioned reference point and the relative position relation between second reference point are a horizontal linear distance and a vertical line distance.
13, the method for image location in the digitized video camera head as claimed in claim 1, it is characterized in that: above-mentioned relative position relation is stored in the image sensor inside of digitized video camera head.
14, the method for image location in the digitized video camera head as claimed in claim 1, it is characterized in that: above-mentioned relative position relation is stored in the storer of digitized video camera head.
15, the method for image location in the digitized video camera head as claimed in claim 1, it is characterized in that: above-mentioned relative position relation is stored in a controller inside of digitized video camera head.
16, the method for image location in the digitized video camera head as claimed in claim 1, it is characterized in that: above-mentioned relative position relation is stored in the circuit component of digitized video camera head.
17, the method for image location in the digitized video camera head as claimed in claim 6 is characterized in that: above-mentioned image camera head comprises an image controller of handling the electronic signal that this image sensor changes.
18, the method for image location in the digitized video camera head as claimed in claim 17, it is characterized in that: the relative position relation of storage is to be read by above-mentioned image controller.
19, the method for image location in the digitized video camera head as claimed in claim 18, it is characterized in that: above-mentioned image controller is a part of signal of choosing this electronic signal with this relative position relation, and this part signal is the signal of video signal in the second shooting imagery zone of image sensor.
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| CN 00124611 CN1344966A (en) | 2000-09-25 | 2000-09-25 | Image positioning method for digital video camera |
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| CN 00124611 CN1344966A (en) | 2000-09-25 | 2000-09-25 | Image positioning method for digital video camera |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100370301C (en) * | 2003-12-05 | 2008-02-20 | 鸿富锦精密工业（深圳）有限公司 | Digital camera lens mould set regulating method |
| CN100416399C (en) * | 2005-03-11 | 2008-09-03 | 普立尔科技股份有限公司 | Focusing mehtod of image picking-up method |
| US8285000B2 (en) | 2008-06-20 | 2012-10-09 | Hon Hai Precision Industry Co., Ltd. | Monitoring system and method |
| CN103002199A (en) * | 2012-10-19 | 2013-03-27 | 北京小米科技有限责任公司 | Camera-module-based image acquisition method and device and mobile terminal |
| CN104730803A (en) * | 2013-12-18 | 2015-06-24 | 台睿科技股份有限公司 | Adjustment-free automatic focusing method and adjustment-free automatic focusing device |
| CN106292735A (en) * | 2016-08-19 | 2017-01-04 | 泉州市汉威机械制造有限公司 | A kind of material image position control method |
-
2000
- 2000-09-25 CN CN 00124611 patent/CN1344966A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100370301C (en) * | 2003-12-05 | 2008-02-20 | 鸿富锦精密工业（深圳）有限公司 | Digital camera lens mould set regulating method |
| CN100416399C (en) * | 2005-03-11 | 2008-09-03 | 普立尔科技股份有限公司 | Focusing mehtod of image picking-up method |
| US8285000B2 (en) | 2008-06-20 | 2012-10-09 | Hon Hai Precision Industry Co., Ltd. | Monitoring system and method |
| CN103002199A (en) * | 2012-10-19 | 2013-03-27 | 北京小米科技有限责任公司 | Camera-module-based image acquisition method and device and mobile terminal |
| CN104730803A (en) * | 2013-12-18 | 2015-06-24 | 台睿科技股份有限公司 | Adjustment-free automatic focusing method and adjustment-free automatic focusing device |
| CN106292735A (en) * | 2016-08-19 | 2017-01-04 | 泉州市汉威机械制造有限公司 | A kind of material image position control method |
| CN106292735B (en) * | 2016-08-19 | 2019-06-28 | 泉州市汉威机械制造有限公司 | A kind of material image position control method |
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