CN103634521A - Video camera shooting method and system - Google Patents
Video camera shooting method and system Download PDFInfo
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- CN103634521A CN103634521A CN201210314798.8A CN201210314798A CN103634521A CN 103634521 A CN103634521 A CN 103634521A CN 201210314798 A CN201210314798 A CN 201210314798A CN 103634521 A CN103634521 A CN 103634521A
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Abstract
The invention discloses a video camera shooting method comprising the following steps: S1. an image source is searched via a first lens; S2. if the image source is searched by the first lens, shooting is performed via the first lens; and if the image source is not searched by the first lens, a second lens is switched on to search the image source. Compared with video camera shooting methods in the prior art, dual lenses are adopted to use in a switching way so that the video camera shooting method is suitable for short-distance and long-distance image identification simultaneously, and recording effect is great.
Description
Technical field
The present invention relates to camera technique field, relate in particular to a kind of video camera image pickup method and system.
Background technology
Along with the fast development of domestic and international camera work, video camera is widely applied in increasing occasion.At present, in occasions such as public classrooms, for the person's of giving lessons teaching content being completed and records, just need to realize by high-definition camera.
In prior art, in order to realize auto-tracking shooting target, take infrared recognition technique to realize, with lecturer, give lessons as example, by wearing infrared light supply with it lecturer, picture pick-up device, by constantly identifying the position of infrared light supply, is recorded thereby follow the tracks of lecturer.Yet, camera on picture pick-up device in existing infrared identifying schemes is the camera of fixed focal length, focal length is to customize according to service range, so, lecturer, walk about in process, the distance between people and camera constantly changes, and because camera lens is taked the restriction of fixed focal length, cause constantly reaching best decipherment distance, recording result is not good.
Summary of the invention
The object of the present invention is to provide a kind of video camera image pickup method.
Correspondingly, the present invention also aims to provide a kind of video camera camera system.
One of for achieving the above object, the technical solution used in the present invention is as follows: a kind of video camera image pickup method, it comprises the steps:
S1, by the first camera lens, search image source;
If S2 the first camera lens finds image source, by the first camera lens, take; If the first camera lens does not find image source, switch to the second camera lens and search image source.
As a further improvement on the present invention, described step S1 specifically comprises: by wide-angle lens, search infrared light supply set on target object.
As a further improvement on the present invention, described step S2 specifically comprises: if wide-angle lens finds described infrared light supply, by wide-angle lens, take; If wide-angle lens does not find described infrared light supply, switch to telephoto lens and search described infrared light supply.
As a further improvement on the present invention, if described method also comprises the steps: not find described infrared light supply by described telephoto lens, abandon this shooting; If find described infrared light supply by described telephoto lens, record the coordinate that described infrared light supply is arranged in described telephoto lens, when target object moves, infrared light supply described in automatic adjustment camera Attitude Tracking, to guarantee that the coordinate of described infrared light supply remains in the default coordinate interval of described pick-up lens.
As a further improvement on the present invention, the method also comprises: before pick-up lens, install infrared fileter additional, and see through the image source of infrared fileter imageable target object.
Correspondingly, the present invention also provides a kind of video camera camera system, and it comprises:
Image source searches module, for searching image source by the first camera lens;
Taking module, for when the first camera lens finds image source, by the first camera lens, take;
Camera lens handover module, for when the first camera lens does not find image source, switch to the second camera lens and search image source.
As a further improvement on the present invention, described image source search module specifically for: by wide-angle lens, search infrared light supply set on target object.
As a further improvement on the present invention, described system specifically for: if wide-angle lens finds described infrared light supply, by wide-angle lens, take; If wide-angle lens does not find described infrared light supply, switch to telephoto lens and search described infrared light supply.
As a further improvement on the present invention, described system also for: if do not find described infrared light supply by described telephoto lens, abandon this shooting; If find described infrared light supply by described telephoto lens, record the coordinate that described infrared light supply is arranged in described telephoto lens, when target object moves, infrared light supply described in automatic adjustment camera Attitude Tracking, to guarantee that the coordinate of described infrared light supply remains in the default coordinate interval of described pick-up lens.
As a further improvement on the present invention, described system also for: before pick-up lens, install infrared fileter additional, and see through the image source of infrared fileter imageable target object.
Compared with prior art, the present invention is by taking twin-lens ground to switch and use mutually, thereby simultaneous adaptation closely and image recognition at a distance, and recording result is good.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of automatic tracing recording arrangement of the present invention;
Fig. 2 is the flow chart of video camera image pickup method in the embodiment of the invention;
Fig. 3 is the flow chart of automatic tracing goal approach when video camera is taken in the embodiment of the invention;
Fig. 4 is the module diagram of video camera camera system in the embodiment of the invention.
Embodiment
Below with reference to embodiment shown in the drawings, describe the present invention.But these execution modes do not limit the present invention, the conversion in the structure that those of ordinary skill in the art makes according to these execution modes, method or function is all included in protection scope of the present invention.
Shown in please refer to the drawing 1, in the specific embodiment of the invention, the picture pick-up device that possesses automatic tracing recording function specifically comprises as lower component: video camera 1, infrared and image recognition module 2, horizontally rotate and in assembly 3, vertical rotary assembly 4 and embedded computer, control assembly 5.Wherein, video camera 1 its major function is to take to record HD video, then issues embedded computer assembly 5; Vertical rotary assembly 3 its major functions be make video camera 1, infrared and image recognition module 2 can be steadily smooth in vertical plane, complete 350 degree rotations; Infrared and image recognition module 2 its major functions are that the image of tracker is identified, and determine its position, and the direction of motion instruction of sending automatic tracing The Cloud Terrace; Horizontally rotate assembly 3 its major functions and be make video camera 1 and infrared and image recognition module 2 can be steadily smooth in horizontal plane, complete 360 degree rotations; In embedded computer, control assembly 5 its major functions and be the Data Control of the stepping motor of the video image of video camera 1, infrared and image recognition module 2, vertical and horizontal direction is carried out to computing and transmission is controlled.
Next, please refer to the drawing 2, in the specific embodiment of the invention, described video camera image pickup method specifically comprises the steps:
S1, by the first camera lens, search image source; Preferably, described step S1 specifically comprises: the first camera lens is wide-angle lens, by wide-angle lens, searches infrared light supply set on target object.Because wide-angle lens is applicable to closely taking, so when close together between lecturer position and camera lens, wide-angle lens just can capture the aiming pip of the infrared light supply in image source, photographic effect is more excellent.
If S2 the first camera lens finds image source, by the first camera lens, take; If the first camera lens does not find image source, switch to the second camera lens and search image source.
Preferably, described step S2 specifically comprises: if wide-angle lens finds described infrared light supply, by wide-angle lens, take; If wide-angle lens does not find described infrared light supply, switch to telephoto lens and search described infrared light supply.Because telephoto lens is applicable to remote distance camera, so when distant between lecturer position and camera lens, telephoto lens just can capture the aiming pip of the infrared light supply in image source, and photographic effect is more excellent.By providing two-path video for recognition system, one tunnel is the video that adopts wide-angle lens, another road adopts the video of telephoto lens, according to the current position that is identified target of the judgement of the size intelligence of the target object recognizing, be closely or at a distance, if closely identify with regard to calling the video of wide-angle lens, if identify with regard to calling the video of telephoto lens at a distance.No matter be identified target, be closely or at a distance, the recognition performance of recognition system can reach optimum state like this.
It should be noted that, the not generally definition to wide-angle and long Jiao in photography industry of " wide-angle lens " defined herein and " telephoto lens ", in the present invention, the definition of two camera lenses is relative, the camera lens of shorter that camera lens of focal length is divided into " wide-angle lens ", by another focal length the camera lens of that long camera lens be divided into " telephoto lens ".
In order to realize the function of the above-mentioned automatically track target object from motion tracking picture pick-up device, in the present invention, made the infrared light supply that a kind of wavelength is 740-1000nm, and this infrared light supply is offered to target object (lecturer) wear, by infrared and image recognition module, identify again, determine lecturer's position, and when lecturer moves, send corresponding control command and come rotating camera to carry out track up.
Particularly, shown in ginseng Fig. 3, in the embodiment of the invention, the method also comprises the steps:
Aiming pip in S3, recognition image source;
Preferably, before step S3, the method also comprises: before pick-up lens, install infrared fileter additional, and see through the image source of infrared fileter imageable target object.Described infrared fileter is 740-1000nm narrow band pass filter, after filtering, just only has infrared light supply imaging at camera on the image obtaining, and that is to say, except infrared light supply imaging is white, the picture of other objects is black.But this is perfect condition, in actual conditions, because the infrared light composition in sunlight is also very abundant, thus at sun-drenched weather, in the image source that camera becomes, still there is many gray areas, or even white bright spot (brightness is lower).Therefore, in the present invention, need the aiming pip that produces by identifying real infrared light supply, could realize the object of track up.
Particularly, in execution mode preferably, step S3 specifically comprises: search the highest luminous point of brightness degree in image source, and the luminous point of area maximum in described luminous point is defined as to aiming pip.After the luminous point of system by all existence on traversing graph image source, can divide the affiliated brightness degree of each luminous point, because the bright spot grade of infrared light spot is highest ranking in all luminous points, so first need to pick out the luminous point of highest ranking, moreover, the aiming pip that infrared light supply produces is also area maximum (than the infrared light in sunlight), therefore, be not difficult to find aiming pip position.
S4, record the coordinate that described aiming pip is arranged in pick-up lens; Preferably, lecturer is worn on front or the back side by described infrared light supply, thus at aiming pip during the middle position in pick-up lens, record coordinate this moment, thus reach best photographic effect.
S5, automatically adjust aiming pip described in camera Attitude Tracking, to guarantee that the coordinate of described aiming pip remains in the default coordinate interval of described pick-up lens.Wherein, coordinate interval can be set as: the coordinate figure being recorded in S4 step of take is benchmark, its abscissa and ordinate be as the median in coordinate interval, such as, suppose that recorded coordinate figure is (x, y), the abscissa fluctuation range in that coordinate interval is x-a ~ x+a, and the ordinate fluctuation range in coordinate interval is y-b ~ y+b, wherein, a, the value of b can be set as required.In other words, when lecturer walks about, if going out the current coordinate (abscissa or ordinate) of infrared light spot, system identification exceeds default fluctuation range, system is sent and is horizontally rotated or the control signal of vertical rotary, thereby the coordinate that keeps described aiming pip remains in the default coordinate interval of described pick-up lens, arrive target following shoot function.
Next, shown in ginseng Fig. 4, in the embodiment of the invention, described camera photography system comprises as lower module:
Image source searches module 10, for searching image source by the first camera lens; Preferably, described image source search module 10 specifically for: the first camera lens is wide-angle lens, by wide-angle lens, searches infrared light supply set on target object.Because wide-angle lens is applicable to closely taking, so when close together between lecturer position and camera lens, wide-angle lens just can capture the aiming pip of the infrared light supply in image source, photographic effect is more excellent.
Taking module 20, for when the first camera lens finds image source, by the first camera lens, take; Picture pick-up device is recorded the image of target object continuously by camera, and by the video storage of recording in the internal memory in picture pick-up device, in other embodiments, this picture pick-up device also can directly be sent to the above-mentioned video of recording terminal is stored by wireless or wired mode or directly show, described terminal comprises personal computer, server, closed-circuit television etc.
Camera lens handover module 30, for when the first camera lens does not find image source, switch to the second camera lens and search image source.
It should be noted that, camera photography system of the present invention also comprises a camera control module, and it is for controlling the work of other modules of whole system.
In the preferred embodiment of the present invention, described system also for: if wide-angle lens finds described infrared light supply, by wide-angle lens, take; If wide-angle lens does not find described infrared light supply, switch to telephoto lens and search described infrared light supply.Because telephoto lens is applicable to remote distance camera, so when distant between lecturer position and camera lens, telephoto lens just can capture the aiming pip of the infrared light supply in image source, and photographic effect is more excellent.By providing two-path video for recognition system, one tunnel is the video that adopts wide-angle lens, another road adopts the video of telephoto lens, according to the current position that is identified target of the judgement of the size intelligence of the target object recognizing, be closely or at a distance, if closely identify with regard to calling the video of wide-angle lens, if identify with regard to calling the video of telephoto lens at a distance.No matter be identified target, be closely or at a distance, the recognition performance of recognition system can reach optimum state like this.
As execution mode more preferably, described camera photography system also for: if do not find described infrared light supply by described telephoto lens, abandon this shooting; If find described infrared light supply by described telephoto lens, record the coordinate that described infrared light supply is arranged in described telephoto lens, when target object moves, infrared light supply described in automatic adjustment camera Attitude Tracking, to guarantee that the coordinate of described infrared light supply remains in the default coordinate interval of described pick-up lens.
Particularly, this camera photography system also comprises:
Luminous point identification module 40, for the aiming pip in recognition image source;
Preferably, this system also for: before pick-up lens, install infrared fileter additional, and see through the image source of infrared fileter imageable target object.Described infrared fileter is 740-1000nm narrow band pass filter, after filtering, just only has infrared light supply imaging at camera on the image obtaining, and that is to say, except infrared light supply imaging is white, the picture of other objects is black.But this is perfect condition, in actual conditions, because the infrared light composition in sunlight is also very abundant, thus at sun-drenched weather, in the image source that camera becomes, still there is many gray areas, or even white bright spot (brightness is lower).Therefore, in the present invention, need the aiming pip that produces by identifying real infrared light supply, could realize the object of track up.
Particularly, in execution mode preferably, luminous point identification module 40 specifically for: search the highest luminous point of brightness degree in image source, and the luminous point of area maximum in described luminous point be defined as to aiming pip.After the luminous point of system by all existence on traversing graph image source, can divide the affiliated brightness degree of each luminous point, because the bright spot grade of infrared light spot is highest ranking in all luminous points, so first need to pick out the luminous point of highest ranking, moreover, the aiming pip that infrared light supply produces is also area maximum (than the infrared light in sunlight), therefore, be not difficult to find aiming pip position.
In sum, compared with prior art, automatic tracing method for recording provided by the invention, can carry out automatically track target object and make a video recording according to the position of the aiming pip on target object, guarantees photographic effect, and cost is lower.And the present invention is by taking twin-lens ground to switch and use mutually, thereby simultaneous adaptation closely and image recognition at a distance, and recording result is good.
Be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should make specification as a whole, technical scheme in each execution mode also can, through appropriately combined, form other execution modes that it will be appreciated by those skilled in the art that.
Listed a series of detailed description is above only illustrating for feasibility execution mode of the present invention; they are not in order to limit the scope of the invention, all disengaging within equivalent execution mode that skill spirit of the present invention does or change all should be included in protection scope of the present invention.
Claims (10)
1. a video camera image pickup method, is characterized in that, the method comprises the steps:
S1, by the first camera lens, search image source;
If S2 the first camera lens finds image source, by the first camera lens, take; If the first camera lens does not find image source, switch to the second camera lens and search image source.
2. video camera image pickup method according to claim 1, is characterized in that, described step S1 specifically comprises:
By wide-angle lens, search infrared light supply set on target object.
3. video camera image pickup method according to claim 2, is characterized in that, described step S2 specifically comprises:
If wide-angle lens finds described infrared light supply, by wide-angle lens, take; If wide-angle lens does not find described infrared light supply, switch to telephoto lens and search described infrared light supply.
4. video camera image pickup method according to claim 3, is characterized in that, described method also comprises the steps:
If do not find described infrared light supply by described telephoto lens, abandon this shooting; If find described infrared light supply by described telephoto lens, record the coordinate that described infrared light supply is arranged in described telephoto lens, when target object moves, infrared light supply described in automatic adjustment camera Attitude Tracking, to guarantee that the coordinate of described infrared light supply remains in the default coordinate interval of described pick-up lens.
5. video camera image pickup method according to claim 4, is characterized in that, the method also comprises: before pick-up lens, install infrared fileter additional, and see through the image source of infrared fileter imageable target object.
6. a video camera camera system, is characterized in that, this system comprises:
Image source searches module, for searching image source by the first camera lens;
Taking module, for when the first camera lens finds image source, by the first camera lens, take;
Camera lens handover module, for when the first camera lens does not find image source, switch to the second camera lens and search image source.
7. video camera camera system according to claim 6, is characterized in that, described image source search module specifically for:
By wide-angle lens, search infrared light supply set on target object.
8. video camera camera system according to claim 7, is characterized in that, described system specifically for:
If wide-angle lens finds described infrared light supply, by wide-angle lens, take; If wide-angle lens does not find described infrared light supply, switch to telephoto lens and search described infrared light supply.
9. video camera camera system according to claim 8, is characterized in that, described system also for:
If do not find described infrared light supply by described telephoto lens, abandon this shooting; If find described infrared light supply by described telephoto lens, record the coordinate that described infrared light supply is arranged in described telephoto lens, when target object moves, infrared light supply described in automatic adjustment camera Attitude Tracking, to guarantee that the coordinate of described infrared light supply remains in the default coordinate interval of described pick-up lens.
10. video camera camera system according to claim 9, is characterized in that, described system also for: before pick-up lens, install infrared fileter additional, and see through the image source of infrared fileter imageable target object.
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| CN201210314798.8A CN103634521A (en) | 2012-08-30 | 2012-08-30 | Video camera shooting method and system |
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| CN107852467A (en) * | 2015-08-13 | 2018-03-27 | 核心光电有限公司 | Supported with video and switch the/Based on Dual-Aperture zoom camera without switching dynamic control |
| CN108475072A (en) * | 2017-04-28 | 2018-08-31 | 深圳市大疆创新科技有限公司 | A kind of tracking and controlling method, device and aircraft |
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Application publication date: 20140312 |