CN103486997A - Lens shooting range determining method and system - Google Patents
Lens shooting range determining method and system Download PDFInfo
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- CN103486997A CN103486997A CN201210194099.4A CN201210194099A CN103486997A CN 103486997 A CN103486997 A CN 103486997A CN 201210194099 A CN201210194099 A CN 201210194099A CN 103486997 A CN103486997 A CN 103486997A
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Abstract
The invention discloses a lens shooting range determining method which comprises the steps of receiving position information of a plurality of locating points sent by a locating device, controlling a video lens to sequentially shoot the locating points through a position adjustment module in the video lens, obtaining the vertically-moved up-and-down angles and the horizontally-moved horizontal angles of the video lens when the locating points are shot, meanwhile, obtaining the locating distances, between the locating points and the video lens, sensed and obtained through a distance sensing chip in the video lens, calculating the angles at which the video lens is required to rotate when the video lens is located to speakers according to the up-and-down angles, the horizontal angles and the locating distances corresponding to the locating points and human body measuring values corresponding to the speakers, obtaining the maximum angle of horizontal leftward rotation and the maximum angle of horizontal rightward rotation from the angles at which the video lens is required to rotate when the video lens is located to the speakers, and determining the shooting range of the video lens. The invention further provides a lens shooting range determining system. According to the lens shooting range determining method and system, the shooting range of the high-order video lens can be determined.
Description
Technical field
The present invention relates to a kind of lens coverage and determine method and system, the coverage that relates in particular to a kind of high-order video signal camera lens is determined method and system.
Background technology
Existing high-order video signal camera lens can be realized the adjustment of lower angle and left and right horizontal angle, but all need be controlled via telepilot when adjusting.The velocity of rotation of described high-order video signal camera lens fast (up to 300 degree per seconds) and positioning function is not provided, therefore, when need utilize this high-order video signal camera lens to be taken, can't provide instant real interactive.
Summary of the invention
In view of above content, be necessary to provide a kind of lens coverage to determine method, to determine the coverage of high-order video signal camera lens.
In view of above content, also be necessary to provide a kind of lens coverage to determine system, to determine the coverage of high-order video signal camera lens.
Described lens coverage is determined method, comprises the following steps: the first receiving step: after the video signal camera lens starts, and the positional information of a plurality of anchor points that receiving positioner sends; First controls step: adjust module control video signal camera lens by the position in the video signal camera lens and take successively each anchor point, and the vertical mobile upper lower angle of video signal camera lens and the level angle moved horizontally while taking each anchor point, and obtain each anchor point that the detecting of video signal camera lens middle distance detecting chip obtains and the orientation distance between the video signal camera lens simultaneously; Calculation procedure: corresponding measurement against human body value corresponding to upper lower angle, level angle, orientation distance and speaker according to each anchor point, calculate the video signal camera lens and navigate to the angle that each speaker need horizontally rotate, described measurement against human body value refers to the vertical range between the desktop of each speaker that the video signal camera lens will be taken and the formation of the plurality of anchor point; Determining step: from described video signal camera lens, navigate to the coverage that maximum angle that maximum angle that the angle that each speaker need horizontally rotate, the taking-up level turns left and level turn right is determined the video signal camera lens.
Described lens coverage is determined system, comprising: receiver module, and after starting at the video signal camera lens, the positional information of a plurality of anchor points that receiving positioner sends; Control module, adjust module control video signal camera lens for the position by the video signal camera lens and take successively each anchor point, and the vertical mobile upper lower angle of video signal camera lens and the level angle moved horizontally while taking each anchor point, and obtain each anchor point that the detecting of video signal camera lens middle distance detecting chip obtains and the orientation distance between the video signal camera lens simultaneously; Computing module, for measurement against human body value corresponding to upper lower angle, level angle, orientation distance and speaker corresponding according to each anchor point, calculate the video signal camera lens and navigate to the angle that each speaker need horizontally rotate, described measurement against human body value refers to the vertical range between the desktop of each speaker that the video signal camera lens will be taken and the formation of the plurality of anchor point; Determination module, determine the coverage of video signal camera lens for navigate to maximum angle that maximum angle that angle taking-up level that each speaker need horizontally rotate turns left and level turn right from described video signal camera lens.
Compared to prior art, described lens coverage is determined method and system, can determine four anchor points by locating device (as telepilot), and determine the coverage of high-order video signal camera lens after utilizing these four anchor points to calculate, and can realize the location of camera site.
The accompanying drawing explanation
Fig. 1 is the Organization Chart that lens coverage of the present invention is determined the system preferred embodiment.
Fig. 2 is the functional block diagram that lens coverage of the present invention is determined the system preferred embodiment.
Fig. 3 is the process flow diagram that lens coverage of the present invention is determined the method preferred embodiment.
Fig. 4 is one of the present invention and takes exemplary plot.
The main element symbol description
| High-order video signal camera lens | 1 |
| Lens coverage is determined |
10 |
| Processor | 11 |
| |
12 |
| |
13 |
| |
14 |
| Module is adjusted in |
15 |
| |
2 |
| |
3 |
| Locating |
4 |
| |
100 |
| |
101 |
| |
102 |
| |
103 |
| Module is set | 104 |
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
As shown in Figure 1, be the Organization Chart that lens coverage of the present invention is determined the system preferred embodiment.
Lens coverage determines that system 10 runs in high-order video signal camera lens 1, but this high-order video signal camera lens 1 be left rotation and right rotation, the high standard video signal camera lens adjusted up and down.Described high-order video signal camera lens 1 is connected in one or more directional microphone 3(figure and only draws one by cable 2).When directional microphone 3 is used by the speaker, described high-order video signal camera lens 1 is adjusted to this speaker position and takes this speaker.Described high-order video signal camera lens 1 also can be taken the anchor point that locating device 4 sends, and described locating device 4 can be the devices such as telepilot, radium-shine transmitter or infrared transmitter.Described high-order video signal camera lens 1 has an initial position, and after having taken all objects, this high-order video signal camera lens 1 can be got back to this initial position, and described object comprises speaker and anchor point.
Also comprise the processor connected by data bus 11, storer 12, distance detecting chip 13, voice control chip 14 and position adjustment module 15 in described high-order video signal camera lens 1.Described storer 12 is determined the data such as program code of system 10 for storing described lens coverage.Described distance detecting chip 13 is for the anchor point detecting locating device 4 and send and the distance between high-order video signal camera lens 1.The voice signal that described voice control chip 14 produces for receiving directional microphone 3.Described position is adjusted module 15 and is comprised lens assembly, adjusting gear etc., for high-order video signal camera lens 1 being adjusted to the orientation at the voice signal place that anchor point that locating device 4 sends or directional microphone 3 produce.
In the present embodiment, described lens coverage determines that system 10 can be divided into one or more modules, described one or more module is stored in described storer 12 and is configured to and carried out by one or more processors (the present embodiment is a processor 11), to complete the present invention.For example, consult shown in Fig. 2, described lens coverage determines that system 10 is divided into receiver module 100, control module 101, computing module 102, determination module 103 and module 104 is set.The alleged module of the present invention has been the program segment of a specific function, than program, is more suitable in describing the implementation of software in high-order video signal camera lens 1.The function of each module describes in detail in connection with the process flow diagram of Fig. 3.
As shown in Figure 3, be the process flow diagram that lens coverage of the present invention is determined the method preferred embodiment.
Step S10, after described high-order video signal camera lens 1 starts, the information of a plurality of anchor points that described receiver module 100 receiving positioners 4 send.The information of described anchor point comprises: the position coordinate value of each anchor point in a rectangular coordinate system in space.As shown in Figure 4, a conference table ABCD is arranged, the distance certain at the CD mono-side interval of conference table ABCD is placed with a high-order video signal camera lens 1, the user uses locating device 4 respectively to locate an anchor point on four angles of conference table, receiver module 100 receives the position coordinate value of these four anchor points, and this conference table can be thought the desktop that these four anchor points form.
Described rectangular coordinate system in space is defined as follows: the residing point of high-order video signal camera lens 1 is made as to F, intersection point between the plane at the perpendicular line at high-order video signal camera lens 1 place and conference table ABCD place is made as to E, using the initial point of E as this rectangular coordinate system in space, EF place straight line is as the Z axis of this rectangular coordinate system in space, be straight line EI on the ABCD plane, this straight line EI is perpendicular to straight line CD, using this straight line EI as the X-axis of this rectangular coordinate system in space, then do one on the ABCD plane from the E point and be parallel to the Y-axis of the straight line of straight line CD as this rectangular coordinate system in space.
In Fig. 4, the initial position of high-order video signal camera lens 1 is for being parallel to ABCD plane and and CDD
1c
1the position that plane is vertical, described CDD
1c
1plane is perpendicular to the plane of conference table ABCD.The position that line segment FG identifies as shown in Figure 4 is for being parallel to plane, conference table ABCD place and and CDD
1c
1the position that plane is vertical, the initial position that this line segment FG is high-order video signal camera lens 1.
Step S12, described control module 101 is adjusted module 15 control high-order video signal camera lenses 1 by position and is taken successively each anchor point, and high-order video signal camera lens 1 vertical mobile upper lower angle and the level angle moved horizontally while taking each anchor point, and obtain each anchor point that 13 detectings of distance detecting chip obtain and the orientation distance between high-order video signal camera lens 1 simultaneously.Should upper lower angle refer to that high-order video signal camera lens 1 is with respect to initial position mobile angle vertically upward or vertically downward, this level angle refers to that high-order video signal camera lens 1 with respect to the initial position level or the angle that moves right of level left.
As shown in Figure 4, during anchor point C on taking conference table ABCD, position is adjusted module 15 and is adjusted high-order video signal camera lenses 1 and move to anchor point C by initial position (line segment FG position).Now high-order video signal camera lens 1 horizontal direction moves to line segment FH position by line segment FG position (level angle is the angle θ that ∠ GFH is corresponding
1), move to vertically downward line segment FC position (upper lower angle is the angle θ that ∠ HFC is corresponding) at above-below direction by line segment FH position.Hence one can see that, and the upper lower angle that the high-order video signal camera lens 1 of module 15 adjustment is adjusted in position is that θ, level angle are θ
1, anchor point C and the orientation distance between high-order video signal camera lens 1 that 13 detectings of distance detecting chip obtain are the distance between 1 residing some F of high-order video signal camera lens and anchor point C, as are L.
Step S14, the measurement against human body value that upper lower angle, level angle, orientation distance and the speaker that described computing module 102 is corresponding according to each anchor point is corresponding, utilize trigonometric function to calculate high-order video signal camera lens 1 and navigate to the angle that each speaker need horizontally rotate.This measurement against human body value refers to the vertical range between the meeting desktop that each speaker that high-order video signal camera lens 1 will be taken and a plurality of anchor point form.The described angle horizontally rotated comprises the angle that angle that level turns left or level turn right, the angle that described level turns left refers to that the initial position level with respect to high-order video signal camera lens 1 turns left and the angle that obtains, and the angle that described level turns right refers to that the initial position level with respect to high-order video signal camera lens 1 turns right and the angle that obtains.
It should be noted that, the described module 104 that arranges arranges the anchor point that measurement against human body value corresponding to each speaker reaches and each speaker closes on.As shown in Figure 4, lay seat M and seat N in the BC of conference table ABCD mono-side, sit speaker M1 and speaker N1 are arranged respectively on seat M and seat N, suppose that each seat and conference table ABCD are all apart from 60cm, module 104 is set and measurement against human body value corresponding to these two speakers is set is 60cm, module 104 is set simultaneously, and the anchor point that speaker M1 closes on can be set is that the anchor point that B and speaker N1 close on is C.If during the speaker who has anchor point not close on, 104 pairs of these anchor points of module are set a virtual speaker is set, and measurement against human body value corresponding to this virtual speaker is 0.As shown in Figure 4, in the AD of conference table ABCD mono-side, there is no the speaker, the speaker that anchor point A, D do not close on, arrange module 104, for anchor point A, D, the virtual speaker that a measurement against human body value is 0 be set respectively.
The anchor point C of take introduces computing module 102 as example and calculates the process that high-order video signal camera lenses 1 navigate to the angle that the speaker N1 that closes on anchor point C need horizontally rotate.As shown in Figure 4, intersection point E, I, C form a right-angle triangle ECI.In right-angle triangle ECI, EI is the line segment that line segment FG maps to plane, conference table ABCD place, EC is the line segment that line segment FH maps to plane, conference table ABCD place, and ∠ IEC is the angle that level angle ∠ GFH obtains in conference table ABCD place Planar Mapping, is also θ
1.Described EC equates with upper lower angle ∠ HFC with the acute angle angle ∠ ECF of FC, is θ.The length that line segment DC extends a measurement against human body value along the direction of DC is to putting K, and the angle horizontally rotated that anchor point C is corresponding is ∠ IEK.Suppose that the angle that ∠ IEK is corresponding is θ
2, θ
2tangent value tan θ
2=(IC+ measurement against human body value) ÷ IE, wherein, the measurement against human body value is known, IC=EC * sin θ
1, IE=EC * cos θ
1.Described sin θ
1for θ
1sine value, cos θ
1for θ
1cosine value, θ
1for known level angle, sin θ
1with cos θ
1all known, and EC=FC * cos θ, the cosine value that this cos θ is θ, FC and θ are all known, can try to achieve thus the angle ∠ IEK that need horizontally rotate when high-order video signal camera lens 1 navigates to the speaker N1 that closes on anchor point C, this ∠ IEK is the angle that level turns left.
Step S16, the maximum angle that the maximum angle that the angle that described determination module 103 need horizontally rotate when high-order video signal camera lens 1 navigates to each speaker, the taking-up level turns left and level turn right is determined the coverage of high-order video signal camera lens 1.The maximum angle that the maximum angle that this level turns left and level turn right forms the coverage of high-order video signal camera lens 1.
In the present invention, the final purpose of described high-order video signal camera lens 1 is to take the speaker who uses directional microphone 3, but, because the speaker is not unique, can be a plurality of speakers, thereby it is variable causing camera site, therefore first fixing several anchor points are positioned.Afterwards, according to speaker's measurement against human body value, speaker's position is estimated, tried to achieve the coverage of high-order video signal camera lens 1, thereby prevented the accuracy of high-order video signal camera lens 1 because of the too fast speaker of missing of rotating speed position impact location.
After the coverage of determining high-order video signal camera lens 1, when directional microphone 3 detects the speaker in speech, thereby described receiver module 100 receives the definite speaker's of voice signal of directional microphone 3 position by voice control chip 14, then described control module 101 is adjusted module 15 by position and is controlled high-order video signal camera lenses 1 and be adjusted to this speaker position and taken, and now module 15 location speakers' eyes are adjusted in this position.
Above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not break away from the spirit and scope of technical solution of the present invention.
Claims (10)
1. a lens coverage is determined method, it is characterized in that, the method comprises the following steps:
The first receiving step: after the video signal camera lens starts, the positional information of a plurality of anchor points that receiving positioner sends;
First controls step: adjust module control video signal camera lens by the position in the video signal camera lens and take successively each anchor point, and the vertical mobile upper lower angle of video signal camera lens and the level angle moved horizontally while taking each anchor point, and obtain each anchor point that the detecting of video signal camera lens middle distance detecting chip obtains and the orientation distance between the video signal camera lens simultaneously;
Calculation procedure: corresponding measurement against human body value corresponding to upper lower angle, level angle, orientation distance and speaker according to each anchor point, calculate the video signal camera lens and navigate to the angle that each speaker need horizontally rotate, described measurement against human body value refers to the vertical range between the desktop of each speaker that the video signal camera lens will be taken and the formation of the plurality of anchor point;
Determining step: from described video signal camera lens, navigate to the coverage that maximum angle that maximum angle that the angle that each speaker need horizontally rotate, the taking-up level turns left and level turn right is determined the video signal camera lens.
2. lens coverage as claimed in claim 1 is determined method, it is characterized in that, the method also comprises:
The second receiving step: thus the voice signal of the directional microphone be connected with the video signal camera lens by the reception of the voice control chip in the video signal camera lens is determined speaker's position;
Second controls step: the speaker position that is adjusted to directional microphone by described position adjustment module control video signal camera lens is taken.
3. lens coverage as claimed in claim 1 is determined method, it is characterized in that, the method also comprises before calculation procedure:
Setting steps: the anchor point that measurement against human body value corresponding to each speaker is set and closes on each speaker.
4. lens coverage as claimed in claim 3 is determined method, it is characterized in that, described calculation procedure comprises:
Navigate at calculating video signal camera lens the angle θ that each speaker need horizontally rotate
2the time, the angle θ that this horizontally rotates
2tangent value tan θ
2=(L * cos θ * sin θ
1+ measurement against human body value) ÷ (L * cos θ * cos θ
1), wherein, L is the orientation distance that closes on this speaker's anchor point, θ is the upper lower angle that closes on this speaker's anchor point, θ
1level angle for the anchor point that closes on this speaker.
5. lens coverage as claimed in claim 4 is determined method, it is characterized in that, described θ is the upper lower angle that closes on this speaker's anchor point, and on this, lower angle refers to that the video signal camera lens is with respect to initial position mobile angle vertically upward or vertically downward, θ
1for the level angle of the anchor point that closes on this speaker, this level angle refers to that the video signal camera lens with respect to the initial position level or the angle that moves right of level left.
6. a lens coverage is determined system, it is characterized in that, this system comprises:
Receiver module, after starting at the video signal camera lens, the positional information of a plurality of anchor points that receiving positioner sends;
Control module, adjust module control video signal camera lens for the position by the video signal camera lens and take successively each anchor point, and the vertical mobile upper lower angle of video signal camera lens and the level angle moved horizontally while taking each anchor point, and obtain each anchor point that the detecting of video signal camera lens middle distance detecting chip obtains and the orientation distance between the video signal camera lens simultaneously;
Computing module, for measurement against human body value corresponding to upper lower angle, level angle, orientation distance and speaker corresponding according to each anchor point, calculate the video signal camera lens and navigate to the angle that each speaker need horizontally rotate, described measurement against human body value refers to the vertical range between the desktop of each speaker that the video signal camera lens will be taken and the formation of the plurality of anchor point;
Determination module, determine the coverage of video signal camera lens for navigate to maximum angle that maximum angle that angle taking-up level that each speaker need horizontally rotate turns left and level turn right from described video signal camera lens.
7. lens coverage as claimed in claim 6 is determined system, it is characterized in that, this system also comprises:
Described receiver module, thus the voice signal of the directional microphone also be connected with the video signal camera lens for the reception of the voice control chip by the video signal camera lens is determined speaker's position;
Described control module, the speaker position that also for adjust module control video signal camera lens by described position, is adjusted to directional microphone is taken.
8. lens coverage as claimed in claim 6 is determined system, it is characterized in that, this system also comprises:
Module is set, for the anchor point that measurement against human body value corresponding to each speaker is set and closes on each speaker.
9. lens coverage as claimed in claim 8 is determined system, it is characterized in that, described computing module calculates the video signal camera lens by following steps and navigates to the angle that each speaker need horizontally rotate:
Navigate at calculating video signal camera lens the angle θ that each speaker need horizontally rotate
2the time, the angle θ that this horizontally rotates
2tangent value tan θ
2=(L * cos θ * sin θ
1+ measurement against human body value) ÷ (L * cos θ * cos θ
1), wherein, L is the orientation distance that closes on this speaker's anchor point, θ is the upper lower angle that closes on this speaker's anchor point, θ
1level angle for the anchor point that closes on this speaker.
10. lens coverage as claimed in claim 9 is determined system, it is characterized in that, described θ is the upper lower angle that closes on this speaker's anchor point, and on this, lower angle refers to that the video signal camera lens is with respect to initial position mobile angle vertically upward or vertically downward, θ
1for the level angle of the anchor point that closes on this speaker, this level angle refers to that the video signal camera lens with respect to the initial position level or the angle that moves right of level left.
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