CN2565225Y - Progressive multi-focus omnibearing camera - Google Patents

Abstract

The utility model relates to a progressive multi-focus omnibearing camera, which is an omnibearing camera with a platform body, a semi-platform body or other angle platform bodies and is composed of a progressive multi-focus lens, multiple image sensor chips, an image synthesis part, an image sending part and an image processing part. The visual range can reach stereo 360 DEG, 180 DEG or other angular omnibearing. Because the surface curvature of the progressive multi-focus lens changes continuously from upper part to lower part, the refractive degree of the refractive power also forms corresponding changes gradually and continuously from the far area of the lens to the near area of the lens. Thus, the image sensor chips form a plurality of focuses from far to near, objects with different distances have different amplification factors, and the objects with far, middle and near distances all can obtain clear images within definite range.

Description

Progressive multi-focal formula omnibearing shooting device

Technical field

The utility model relates to a kind of camera head, and particularly a kind of progressive multi-focal formula omnibearing shooting device belongs to security personnel's shoot and monitor equipment.

Background technology

Now just being applied to the shoot and monitor field is illustrated: through applicant's investigation and inspection information, security surveillance system at present commonly used was as-26 days on the 23rd June in 1999, Beijing China International Exhibition Centre holds: ' 99 public safety, fire product and the exhibition of Building Fire Protection material, the DVR884 intelligent digital supervising device that the 1A134 exhibition booth is put on display, and the supervising device of introducing in " Chinese society's public safety product industry integrated information " magazine (1999 the 3rd phase the 44th page) " HT300 microcomputer guard supervisory control system " article, all need the video image information of camera acquisition is directly sent on the video capture card of or several miniature digital computers (microcomputer), and convert digital quantity to and send into the apparent of microcomputer and look in the buffer area, show to look to show on the display device that is stuck in microcomputer by known management software and video then and look.Because the visual field of above-mentioned supervising device video camera is all narrower, thereby it is narrower equally to show the visual field of looking correspondence image, though can must cause the serious distortion of image and be unfavorable for image recognition by adopting the wide-angle lens broadening visual field.Therefore, but the video camera of above-mentioned supervising device is installed on the The Cloud Terrace that rotates upper and lower, left and right, when the angle that needs mobile camera, when maybe needing to gather omni-directional visual information, the microcomputer of supervising device sends control signal, two direct currents or AC servomotor in the control The Cloud Terrace drive The Cloud Terrace middle gear group the rotation of The Cloud Terrace upper and lower, left and right are finished.And the adjustment of aperture, focal length, the control signal that relies on the supervising device microcomputer to send equally then, two miniature cocurrent electromotors drive a series of mechanical driving parts to realize in the control video camera.The image information of collection site is also sent into video tape recorder or digital memeory device and is preserved except that for apparent the looking.In sum, supervising device exists the defective of three aspects at present: one, because the visual field of video camera is narrower, must rely on the mechanical action of The Cloud Terrace to realize moving of camera lens, cause IMAQ speed slow, finish the IMAQ of the three-dimensional 180 degree omni-directional visual information of a width of cloth, mechanical motion scan needs several seconds and even ten several seconds.Thereby at a time, the image that obtains in the display unit can only be a certain part of stereoscopic and omnibearing vision frame, usually attends to one thing and lose sight of another, and exists bigger image information loss.Because the camera angle translational speed is slow, as the shoot and monitor equipment in safety precaution field, a lot of on-the-spot situations fail in time to absorb and preserve.Its two because the motor and the plant equipment of this class supervising device is many, thereby power consumption is big, disguise is poor, cost is high, shortcoming such as fragile is more outstanding.Its three, when a plurality of observers want to see when looking into different position, a certain scene, as be installed in the large-scale commercial building on-the-spot video camera of selling goods and need image information sent into respectively in general manager, administrative staff, security personnel's the microcomputer and show.Above-noted persons all can send control signal, control the position and the attitude of video camera on the on-the-spot The Cloud Terrace, show to choose own interested image scene.General manager's overall view overall situation, but relatively stress the volume of the flow of passengers and sales situation, whether administrative staff then pay attention to the shop-assistant and stick to post and working attitude, and the security personnel is concerned about that then the safety of commercial building is as incidents such as theft or robberies.Because the angle difference that above-noted persons are concerned about, therefore on the on-the-spot The Cloud Terrace of control, can clash when the position of video camera and attitude.A kind of solution is: a few cover shoot and monitor equipment can be installed in the scene more, satisfying different personnel's needs, but certainly will cause overlapping investment, and especially the more expensive cost of investment that makes of The Cloud Terrace price increases substantially.The another kind of method that solves is: the control signal that general manager, administrative staff, security personnel's microcomputer is sent is weighted processing.The general manager position is most important, so weighting is the heaviest, when the general manager controls, and the control signal that can send by hardware or software masking administrative staff and security personnel's microcomputer, field camera is only accepted the control signal that the general manager sends.Administrative staff only could control the position and the attitude of field camera under the situation that the general manager does not have to control.Because the theft or the crime probability of happening such as robbery are low, security personnel's weighting is the lightest, only above-mentioned both when all not having control signal and sending, could control video camera and choose oneself interested image scene.Be not difficult to find out from above-noted persons' working condition: the general manager has influenced administrative staff's work to the control of field camera, and same, general manager and administrative staff can influence the supervision of security personnel to the scene again.Certainly, can redistribute above-noted persons' weighting as required, but under the condition of present shoot and monitor equipment, still exist interactive problem.

Summary of the invention

The purpose of this utility model, to overcome these defectives of above-mentioned shooting and display unit exactly, point out a kind ofly to join the mirror problem for solving old presbyopia according to Frenchman bernard Mai Tenaizi (Bernad Maitenaz) nineteen fifty-one, and first progressive multi-focal formula lens in the world of designing, and according to France according to the principle of looking the progressive multi-focal formula lens Varilux that road glasses company puts on market nineteen fifty-nine, the omnidirectional vision camera camera lens that constitutes by progressive multi-focal formula eyeglass, and as the image parallel acquisition of camera head partly by multi-disc CCD or cmos image sensor chip, to constitute a kind of stage body, the omnibearing shooting device of half stage body or other angle stage body, make visual range can reach three-dimensional 360 degree, three-dimensional 180 degree or other comprehensive angles, and within the specific limits, make far away, in, in-plant things all can obtain sharp image.The multiway images of parallel acquisition is again after synthetic and image processing, forming omnibearing visual information sends in the display buffer district of one or more microcomputer, in the display buffer district of microcomputer separately, select own interested image partly to constitute one or more operators, and shooting that on display, shows and display unit.Need not make the rotation of The Cloud Terrace upper and lower, left and right finish the conversion of camera angle or the collection of omnidirectional image information by servomotor in the driving The Cloud Terrace again.Also need not realize the adjustment of aperture, focal length again by miniature cocurrent electromotor in the actuated camera camera lens.

In order to achieve the above object, this device according to the principle of progressive multi-focal with the lens design of video camera is: the stage body structure of solid 360 degree stage bodies, three-dimensional 180 degree half stage bodies or other angle that is made of progressive multi-focal formula eyeglass, lens surface curvature reduces from top to the bottom continuously, make its refractive power corresponding, reduce gradually, continuously until reaching the required refractive diopter of closely using with the district at the near of camera lens bottom from being positioned at the far away of camera lens top with the district.Because the curvature of camera lens constantly changes from top to bottom, each thickness partly of camera lens is not quite similar, also be not quite similar as required with the spacing of image sensor chip, thereby can form a plurality of focuses that draw near, and to far away, in, the things of nearly different distance has different amplification coefficients.By the stage body structure camera lens that progressive multi-focal formula eyeglass constitutes, make far away, in, the things of solid 360 degree of nearly different distance, three-dimensional 180 degree or other angle all can obtain sharp image on image sensor chip.Thereby realized the collection of omnibearing stereo image information.

Because progressive multi-focal formula stereoscopic and omnibearing camera head has multi-disc CCD or cmos image sensor chip, and every image information of gathering different azimuth, the image information that the image sensor chip of multi-disc different azimuth is gathered can be spliced into a complete on-the-spot comprehensive live telecast.Progressive multi-focal formula camera lens can be spliced by the multi-disc eyeglass, also can be processed by the monolithic eyeglass.Because the different amplification coefficients of a plurality of focuses that camera lens draws near and continually varying can make the image of collection some distortion occur, these defectives can be eliminated by software programming, repeat no more in the utility model.For preventing information dropout, the edge partly is mutual superposition between the associated picture sensor chip, and many-sided image information is sent into microcomputer and synthesized, and makes its information be connected good.The on-the-spot visual information of handling in real time through image software is omnidirectional images continuous, no dead band, constantly transmits and leaves in the display buffer district of one or more microcomputer.Under corresponding pattern software is supported, the different operating person is by mouse, joystick or other control methods, in the omnidirectional image information of from the display buffer district, storing, choosing own interested part shows, and can or dwindle picture by known pattern software amplification, carry out the focusing of software numeral, thereby finished the collection and the demonstration of own required image information.

Therefore, progressive multi-focal formula stereoscopic and omnibearing camera head described in the utility model has very outstanding advantage when being applied to the shoot and monitor field.At first, this device all adopts electronic circuit to finish the collection of omnidirectional image information, and need not assign to finish through motor driven and a series of mechanical drive department again, thereby obviously be better than traditional mechanical scanning supervising device at aspects such as reliability, rapidity, disguises.Secondly, the imageing sensor of camera head, it is all very cheap no matter the CCD chip still is the CMOS chip price, the half stage body omnibearing shooting device that adopts six cmos image sensor chips and progressive multi-focal camera lens to constitute in this example, its cost still are lower than a zoom lens and add the camera head that The Cloud Terrace constitutes.Along with the development of microelectric technique, the integrated level of integrated circuit (IC) chip is more and more higher, and processing speed is more and more faster, and price is also more and more lower.And the price of motor and mechanical driving part does not have downward trend.As seen, As time goes on, this device can have more and more significantly price advantage.They are three years old, because this device is a while parallel acquisition multichannel visual information, after synthesizing omnibearing visual pattern, can leave in separately the display buffer district for many microcomputers (as above-mentioned large-scale commercial building general manager, administrative staff, security personnel separately in the display buffer district of microcomputer).Different operating person (as general manager, administrative staff, security personnel) can pass through mouse, joystick or other control methods, the omnidirectional image information of in the display buffer district of microcomputer separately, storing, choose own interested part and show, satisfied different operating person's needs.Simultaneously, omnibearing image information is sent into video tape recorder, disc unit or other memory devices store, search at that time not the image information of choosing in the display buffer district, reduced losing of scene image information at that time in order to the operator.This is that present supervising device can't be realized.

Description of drawings

Now with specific embodiment the utility model further is illustrated in conjunction with the accompanying drawings, wherein:

Fig. 1 makes the principle schematic of light focusing for typical convex lens;

Fig. 2 is a progressive multi-focal formula lens Varilux structure principle chart;

Fig. 3 is progressive multi-focal formula half a stage body omnibearing shooting device structure chart;

Fig. 4 is a progressive multi-focal formula omnibearing shooting device block diagram, represents six road image sensor chips parallel acquisition six tunnel visual informations simultaneously, and synthesizes the process of a width of cloth omni-directional visual image;

Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 are the physical circuit of progressive multi-focal formula omnibearing shooting device;

Figure 10 is the studio of picked-up comprehensive emulation part image.

Embodiment

To describe specific embodiments in detail with reference to accompanying drawing.

Fig. 1 is the principle of typical convex lens focus, be the clear principle of setting forth progressive multi-focal formula lens Varilux., at first the principle that convex lens 1 are focused on is given explanation: convex lens focus can be explained the skew and the refraction of light with prism, convex lens 1 are one to be decomposed into the convex lens section of a lot of fritters, each fritter is a prism, prism bottom surface, top down, all downward deviation when light passes through, the lower prism bottom surface up, light by the time deviation that all makes progress, therefore, if the processing symmetry, convex lens will make convergence of rays in a focus.

Fig. 2 is the sectional structure chart of a progressive multi-focal formula lens 2, the curvature of this eyeglass changes from top to the bottom continuously, each thickness partly is not quite similar according to the design needs, and it is asymmetric, if it is decomposed into the polylith prism, will find these prisms light by the time skew that forms and the focus that refraction is produced have nothing in common with each other because the curvature of design changes from top to continuously smooth ground, bottom, thereby formation gradually changes and the pattern of a plurality of focuses, that is: progressive multi-focal pattern.Progressive multi-focal eyeglass 2 each thickness partly are not quite similar, also be not quite similar as required with the spacing of image sensor chip 3, thereby outside far away, in, the things of nearly different distance forms the image of a plurality of focuses that draw near on image sensor chip, and to far away, in, the things of nearly different distance has the different amplification coefficients of 2,1.5,0.75 continually varying respectively, as shown in phantom in Figure 2.Different with above-mentioned multi-focus lens is: the progressive multi-focal glasses that old presbyopia person wears, its eyeglass curvature increases continuously from top to the bottom, far away, in, the things amplification coefficient of nearly different distance constantly increases.When remote, eyeglass is similar to goggles.In the time of closely, the eyeglass amplifying power increases gradually and forms presbyopic glasses.The wearer looks into far in sight, in, during the things of nearly different distance, needn't frequently pluck again, wear glasses and just can see the things of different distance clearly.The Changing Pattern of its amplification coefficient of progressive multi-focal formula camera lens that the utility model adopts and progressive multi-focal glasses are antithesis, its objective is the adjustment that replaces the traditional cameras focal length by the changing unit of the amplification coefficient that draws near, and image sensor chip also can partly replace the adjustment of traditional cameras aperture to the calibration ability of light, and the aperture, the focus adjustment that allow traditional cameras be undertaken by mechanical movement are finished by electronic mode.

Fig. 3 is the structural representation of progressive multi-focal formula half stage body omnibearing shooting device, 3a, 3b, 3c, 3d, 3e, 3f are six picture transducers among Fig. 3, divide upper and lower two sections and be arranged in trapezium structure, as we can see from the figure, per two picture transducers are responsible for gathering the image information in a certain orientation, constitute the collection of left road image information, the collection of road and right wing image information during 3c, 3d and 3e, 3f constitute respectively jointly as imageing sensor 3a, 3b.2 is the half stage body camera lens around six picture transducers, 180 degree that progressive multi-focal formula eyeglass constitutes among Fig. 3, and constitutes omnibearing shooting device with six picture transducers, in order to gather 180 degree stereoscopic and omnibearing image informations.

Fig. 4 be six picture transducer omnidirectional image information collection, send to the overall process block diagram that receives control.Imageing sensor 3 adopts the OV7910 cmos image chip of OmniVision company.OV7910 is single-chip high-performance, low-cost color cmos image sensors chip, it supports general video (video) and two kinds of video formats of super video (S-Video), rgb video signal is provided, and supports VCR televimonitor or other terminal input equipment.The image information that the low-cost imageing sensor that is made of single-chip OV7910 is gathered, the video format conversion through TDA8310AWE conversion of signals chip 4 is converted to the YUV form to vision signal, sends in the microcomputer based on the synthetic capured keystroke of the video of pci bus.SAB9077 is a video synthesis chip 5 in the card, and it can synthesize piece image with the two-way real time video signals, sends into then in the synthetic capured keystroke of video in the Bt848 chip 6.Bt848 is single video capture, the process chip that BrookTree company produces, and it can directly send into video pixel data the display buffer district of microcomputer.The synthetic video input of three-channel parallel is merged into an omnibearing visual pattern with the visual information of six picture sensor chips under the management of software, send into the display buffer district of microcomputer, uses for storage and demonstration.I2C bus 83C654 single-chip microcomputer 7 is finished the communication of the information that manages with pci bus, the parameter of control OV7910 cmos image chip 2.To SAB9077 video synthesis chip 5 setting of programming, realize that at first the two-way image synthesizes the function of piece image after cutting out splicing, and finish the information exchange between the chip.From Fig. 4 image display device, can see; The collection of omnibearing shooting device visual pattern information, send to the overall process that receives control.

Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 are the physical circuit of progressive multi-focal formula half stage body omnibearing shooting device.Now be described as follows: Fig. 5 is the physical circuit of the low-cost transducer 3 of single-chip OV7910 formation.Programme setting to realize automatic gain control (AGC) by the I2C interface, and automatic exposure is controlled, and GAMMA proofreaies and correct and backlight is controlled.TDA8310AWE is a vision signal conversion chip 4, and vision signal is converted to yuv format, and generates the corresponding synchronous signal, sends in the microcomputer video capture card based on pci bus.Fig. 6 is pci bus address, data decoding and driving part, wherein 74LS688 chip 8 selects the address with DIP switch 9 as the pci bus plate, by selecting different plates to select the address successively, microcomputer is sent the picture signal of three tunnel six video cameras into corresponding display buffer district.GAL20V8 chip 10 is as address decoding, 74LS373 chip 11,12 adds buffer for latch, I2C bus 83C654 single-chip microcomputer 7 and 74LS273-latch 13 are finished the parallel communication that carries out with pci bus and the conversion of I2C bus communication, make that the exchanges data of chip becomes simple on the CPU of microcomputer and the integrated circuit board.Fig. 7 is the physical circuit of SAB9077 video synthesis chip 5, and this chip is after programming is provided with, by cutting out splicing, the two-way real time video signals can be synthesized piece image, so that six tunnel visual informations of gathering in parallel are sent into before the display buffer district of microcomputer, be simplified to three the tunnel.With the development of microelectric technique, the appearance of the multi-channel video signal synthesis chip of special designs will make whole proposal greatly simplify.2M RAM was used in the random data storage when HM538253BJ chip 14 synthesized for vision signal among Fig. 8, and TDA8501 chip 15 is converted to the PAL signal with YUV signal.Fig. 9 is the physical circuit of Bt848 chip 6, and this chip can directly hang on the pci bus, makes full use of the high bandwidth of the 132MB/s of pci bus.The video image data of 32 bit bytes is transferred on the pci bus under the control mode of DMA passage, and video pixel data is directly sent into the video display buffer district of microcomputer.The Bt848 chip can be provided with by programming equally, realizes image cutting-out splicing function.The video input of three-channel parallel merges six tunnel visual informations under the management of software, becomes an omnibearing visual pattern, enters the display buffer district for storage and demonstration.

Figure 10 is the some of comprehensive studio emulating image of our picked-up, this figure is the little figure of four width of cloth in six road visual pattern information, see that for clear image is by the little figure splicing of four width of cloth, this figure is without image processing, the junction surface is high-visible between each figure, and the square frame among the figure partly is the selected display part of operator.

Can see from above-mentioned explanation:, thereby obviously be better than traditional mechanical at aspects such as reliability, rapidity, disguise and low costs and scan supervising device because this device adopts omnibearing electronic information gathering, treatment technology.Supply with multidigit different operating person omni-directional visual information at the same time, and can therefrom choose own interested visual pattern aspect and marked improvement is arranged than traditional mechanical scanning supervising device.

Below in conjunction with the embodiments this device has been done detailed explanation, those skilled in the art are not difficult to make some remodeling according to the principle of this device, but they can not exceed spirit and the scope that the utility model claim is limited.

Claims (2)

1. progressive multi-focal formula omnibearing shooting device, mainly by progressive multi-focal formula camera lens (2), multi-disc image sensor chip (3) and image are synthetic, send, handle partly and form, it is characterized in that: the camera lens of camera head (2) is made of progressive multi-focal formula eyeglass, cooperate multi-disc to point to the image sensor chip (3) of different directions to constitute a kind of stage body, the omnibearing shooting device of half stage body or other angle stage body, make visual range can reach three-dimensional 360 degree, three-dimensional 180 degree or other comprehensive angles, and within the specific limits, make far away, in, in-plant things all can obtain sharp image.

2. according to the progressive multi-focal formula omnibearing shooting device of claim 1, it is characterized in that: progressive multi-focal formula camera lens (2) surface curvature changes from top to the bottom continuously, its refractive power is also correspondingly from being positioned at the far away from the district of camera lens, change continuously gradually,, until reaching camera lens closely with the required refractive diopter in district, thereby on image sensor chip (3), form a plurality of focuses that draw near, and the things of different distance had different amplification coefficients.

Images