CN202918392U - High-speed pick-up device applying quick switch light source - Google Patents
High-speed pick-up device applying quick switch light source Download PDFInfo
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- CN202918392U CN202918392U CN201220446246.8U CN201220446246U CN202918392U CN 202918392 U CN202918392 U CN 202918392U CN 201220446246 U CN201220446246 U CN 201220446246U CN 202918392 U CN202918392 U CN 202918392U
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Abstract
Disclosed in the utility model is a high-speed pick-up device applying an LED light source. The high-speed pick-up device comprises a shooting module, an LED light source module, a switch control circuit module and an image processing module. The shooting module includes a pick-up lens and a shooting sensor corresponding to the pick-up lens; the LED light source module includes a plurality of LED luminescent devices with different illuminant colors; the switch control circuit module is used for controlling the LED light source module and the shooting module; and the image processing module is used for receiving and carrying out processing on an image shot by the shooting module. The provided high-speed pick-up device utilizes the LED illumination light source and the efficiency is high; and the switching time of the LED can be control on the condition of high accuracy and high speed with the microsecond level or short-time level. Therefore, the provided high-speed pick-up device, compared with the traditional high-speed camera, has a great price advantage and thus can be popularized and applied conveniently.
Description
Technical field
The utility model relates to the high speed video system field, particularly a kind of high speed video camera of using the high-speed switch light source.
Background technology
High-speed camera is that a kind of spatial information of high-speed motion change procedure and time are closely linked together carried out the method for recording image, transition, high speed processes recording occurring continuously can be got off, and the method for using image analysis equipment quantitatively to calculate, it is applied to trajectory analysis the earliest, so far expand to gradually civilian from military affairs, from industry to the medical biotechnology, the research from macroscopical mechanical movement to micromechanism.High-speed camera can finish in a short period of time to high-speed target fast, repeatedly the sampling, when showing with conventional speeds, the change procedure of institute's record object with regard to clear, be presented on us at the moment lentamente.The outstanding advantages such as the high speed optoelectronic imaging technique has that real-time target is caught, image fast recording, instant playback, image are visual and clear.
The operation principle of tradition high-speed camera is: the irradiation that high-speed moving object is subject to natural daylight or human assistance houselights produces reverberation, and perhaps moving target itself is luminous, and the part of these light sees through the image-forming objective lens of high speed imaging system.After the object lens imaging, drop on the picture sense face of photoelectronic imaging device, be subjected to the photoelectric device of drive circuit control, can be to responding fast as the target picture on the sense face, namely according to target on the picture sense face as the distribution of light energy, be the charge packet that pixel produces response magnitude at each sampled point, finish the opto-electronic conversion of image.Each charge packet with image information is transferred in the readout register rapidly.Read output signal transfers in the computer after signal is processed, and by computer image is read to show and interpretation, and the result is exported.Therefore, the high speed imaging system that a cover is complete is comprised of several parts such as optical imagery, photoelectronic imaging, signal transmission, control, image storage and processing.
At present, the multipotency of general video camera, DV machine reaches 50-60 ~ 300 frame per seconds, mobile phone 30 frames/s, and general high-speed camera can reach the speed record of per second 600 ~ 10000 frames usually, the high-speed camera of some military's special use even can reach 100 ten thousand ~ 1,000 ten thousand frame per seconds.For realizing the technique effect of high-speed camera, traditional high-speed camera and other high speed imaging instruments are more paid attention to the high image of capture time frequency, and with these certain means as the realization high-speed camera.And need under high-frequency, gather the image pattern data, except the restriction of transducer and lighting apparatus sensitivity, sample frequency also be subject to the ADC speed of shutter speed and transducer and other Correlation method for data processing bottlenecks present.Therefore the transducer of high-speed camera need to possess special structure, technique and material, can be in the situation that work at a high speed.
In addition, in the shooting field, use artificial assist illuminator light (being commonly called as photoflash lamp) to experience development course from magnesium powder photoflash lamp, a photoflash lamp (flash fireworks) to flash tube; The current flash tube that generally uses is to utilize gas discharge principle, and the photosensitive control circuit that adopts integrated circuit and blue silicon transistor to form can flicker the time according to shooting distance and reflective power control automatically.Above-described photoflash lamp has its weak point, namely can not realize instantaneous high-speed switch: be energized to beginning from it luminous, arranged certain time of delay, be commonly called as preheating; Be powered down to luminous end from it, also arranged certain time of delay, be commonly called as twilight sunset.In high-speed camera, particularly in the high-speed camera of dark surrounds, the continuous flicker of photoflash lamp is because the existence of time of delay (twilight sunset) can not reach very high flicker frequency.
The utility model content
The purpose of this utility model is to provide a kind of high speed video camera of using the high-speed switch light source, has cost beneficial effect low, that easily popularize with respect to existing camera head.
A kind of technical scheme of using the high speed video camera of led light source of the utility model is: a kind of high speed video camera of using the high-speed switch light source comprises taking module, high-speed switch light source module, control circuit module and image processing module open the light; Described taking module comprises shutter, pick-up lens and the shooting transducer corresponding with pick-up lens; Described high-speed switch light source comprises 2 kinds of LED luminescent devices with different color light at least; Described ON-OFF control circuit module is connected with shutter with the led light source module, is used for led light source module and shutter are linked, and makes the led light source module carry out successively the switch motion of different colored light sources in the time for exposure at a shutter; Described shooting transducer is passed to image processing module with the vision-mix that shutter obtained in the time for exposure, by image processing module image is extracted with video and integrates.
High-speed switch light source of the present utility model refers to can carry out the light source of multiple switching action in an aperture time, should have good switch and block performance, can carry out switch motion at Millisecond even Microsecond grade.The preferred LED(Light Emmitting Diode that adopts) light source, however according to inventive principle, those skilled in the art can associate other high-speed switch light source easily, such as LASER Light Source etc., also belong to protection range.
The development in recent years of LED lighting source is very very fast, and its illumination performance is become better and better, and price is also relatively low, also has the title of green light source.And can control under the high-speed case of very high accuracy and Microsecond grade even shorter time the switching time of LED.The utility model adopts the performance that LED can speed-sensitive switch just, in the situation that keep the shutter time for exposure constant, within the time for exposure, pass through the high-speed switch to different colored light sources, so that target object can reflect different color light, thereby obtain high-frequency picture signal by difference photochromic " index ", the picture processing by the later stage again, extract by the picture of difference photochromic " index " respectively being mixed with different photochromic vision-mix in the time for exposure, synthesize again the video of high-speed camera effect according to the time order and function order.The utility model compared with prior art, the principle that adopts led light source color separation cursor relatively simple, that cost is low to draw is finished high-speed camera in the situation that do not need to improve the shutter frequency of exposure, has a cost low, the beneficial effect that high-speed camera is effective.
Preferably, described led light source module is any two kinds or whole combination of red-light LED, green light LED and blue-ray LED.
Preferably, described led light source module arranges with array format, is specially the array that array that the LED lamp bead seal dress by different color light forms or different color light led chip form.
Preferably, the LED luminescent device of described different glow colors is spaced in the light emitting array.
Preferably, described led light source module arranges in the projecting apparatus mode, and the LED lamp bead seal dress that is specially by different color light projects light onto on the object by one or more projection lens together.
Limited, the LED luminescent device of described each glow color has several, and the LED luminescent device of all glow colors forms a planar light emitting array.
Preferably, described planar light emitting array is flat luminous array or the cambered surface light emitting array that is conducive to optically focused.
By using the mode of various arrays, make LED illumination more even, without the dead angle, fully satisfy the illumination demand of high-speed moving object as far as possible
Preferably, described led light source module has a plurality of, and the Different Light module is shone target object from different perspectives.
Because taking module has a plurality of pick-up lenss, a plurality of shooting angle if use single light emitting module, easily make the details of Partial angle can not get sufficient illumination.Thereby around taking module, light emitting module is set, and make light more even, flash of light is without the dead angle.
Preferably, described led light source module is controlled simultaneously by the same control circuit module of opening the light, or by open the light control circuit module cooperative control of difference.
Preferably, described shutter is mechanical shutter, is specially by the mechanical structure of machinery folding with the control single exposure; Perhaps, described shutter is electronic shutter, is specially the electronic control module that the sensor photosensitive time is taken in control.
Preferably, described image processing module comprises the rgb signal collector, and the captured view data that obtains of taking module is passed to image processing module by the rgb signal collector.
Preferably, described pick-up lens has a plurality of, and these a plurality of pick-up lenss are used for the respectively synchronous photographic subjects object from different visual angles.
Preferably, described pick-up lens has a plurality of, and these a plurality of pick-up lenss are used for according to predefined order, and circulation is taken successively.Thereby further improve capture rate.
Preferably, described shooting transducer has a plurality of, and the corresponding a plurality of pick-up lenss of a described shooting transducer or shooting transducer and pick-up lens are corresponding one by one.
Pick-up lens and take transducer and both comprised and adopt one to one that mode arranges, can also adopt the corresponding shooting transducer of all pick-up lenss, the corresponding shooting transducers of a plurality of pick-up lenss and all the other pick-up lenss are corresponding shooting transducer separately, and the corresponding a plurality of bats of pick-up lens take the photograph set-up mode of transducer etc.About taking the setting of transducer and pick-up lens, corresponded manner depends on the demand of later data processing and the demand of sensor setting.Wherein the mode of the corresponding a plurality of pick-up lenss of same shooting transducer is conducive to simplify the processing technology of taking transducer.
Preferably, described all shooting transducers form a sensor plane.So that take transducer data are processed.
Preferably, described pick-up lens interconnects in mode one-body molded or splicing by fixed frame.Make between each pick-up lens and more closely cooperate.
Preferably, described all pick-up lenss are arranged in a camera lens face, and the camera lens face is straight surface, has the cambered surface of radian or the combinatorial surface that is spliced in the mode of certain knuckle by several planes.Thereby make camera lens arrange more compact and reasonable.
Description of drawings
Fig. 1 is the overall structure schematic diagram of a kind of embodiment of the utility model high speed video camera;
Fig. 2 is the framework connection diagram of a kind of embodiment of the utility model high speed video camera;
Fig. 3 is the lens arrangement schematic diagram of a kind of embodiment of the utility model high speed video camera;
Fig. 4 is camera lens and the transducer arrangement relation schematic diagram of a kind of embodiment of the utility model high speed video camera;
Fig. 5 is the led light source module diagram of a kind of embodiment of the utility model high speed video camera;
Fig. 6 be a kind of embodiment of the utility model high speed video camera utilize projection lens projects light schematic diagram.
Fig. 7 is the operation principle schematic diagram of a kind of embodiment of the utility model high speed video camera;
Fig. 8 is the IMAQ schematic diagram under the different color light source lighting of a kind of embodiment of the utility model high speed video camera;
Fig. 9 is that all pick-up lenss of the utility model specific embodiment are operated in high-speed camera algorithm and the process analysis procedure analysis figure under the not homochromy LED flash of light simultaneously;
Figure 10 is that all pick-up lenss of the utility model specific embodiment are not operated in high-speed camera algorithm and the process analysis procedure analysis figure under the homochromy LED flash of light simultaneously;
Figure 11 is that the pick-up lens of the utility model specific embodiment is operated in respectively high-speed camera algorithm and the process analysis procedure analysis figure under the homochromy and not homochromy LED flash of light.
Embodiment
Below in conjunction with accompanying drawing specific embodiment of the utility model is described further:
Extremely shown in Figure 5 such as Fig. 1, a kind of high speed video camera of using led light source, comprise taking module 2, described taking module 2 comprises four pick-up lenss, be respectively the first pick-up lens 2A, the second pick-up lens 2B, the 3rd pick-up lens 2C and the 4th pick-up lens 2D, the mode that these four pick-up lenss are square is arranged, i.e. rectangular arranged.
Taking module 2 as shown in Figure 2, described four pick-up lenss are arranged in a straight camera lens face, have certain interval between the pick-up lens, and interfix in mode one-body molded or splicing by fixed frame.
In other embodiments, described pick-up lens can also be two, be up and down to arrange, or three, triangularity is arranged, and more than four.
All pick-up lenss are arranged in a camera lens face, the camera lens face can be straight surface, can also be the cambered surface with radian, can also be the combinatorial surface that is spliced in the mode with certain knuckle by several planes, decides according to the concrete condition of the target object of required shooting.Can also can have a fixed gap by close-packed arrays between the pick-up lens.
As shown in Figure 1, described taking module 2 also comprise four with described four pick-up lenss take one to one transducer 9, these four shooting transducers 9 form a sensor cover, and corresponding one of each pick-up lens is independently taken transducer, is convenient to take transducer data are processed.Shooting transducer commonly used has ccd sensor etc.
Described shutter comprises mechanical shutter and electronic shutter.Described electronic shutter (Electronic Shutter) is the term that relative mechanical shutter function proposes, and it is equivalent to control the time of taking sensor photosensitive, is the known concept in shooting field.For ccd sensor because the essence of CCD sensitization is the accumulation of signal charge, then sensitive time longer, the integration time of signal charge is also just longer, the amplitude of output signal electric current is also just larger.By adjusting the integration time (namely adjusting the width of clock pulse) of photoproduction signal charge, can realize controlling the CCD function of sensitive time.In the occasion of mechanical shutter, the mechanical structure of the high-speed switch of machinery control but shutter of the present utility model is served as reasons; In the occasion of electronic shutter, shutter of the present utility model is for the integration time of control transducer photoproduction signal charge, with the electronic control module of control sensor photosensitive time.
In other embodiments, pick-up lens and shooting transducer can not adopt one to one, and mode arranges, such as the corresponding shooting transducer of all pick-up lenss, the corresponding shooting transducers of a plurality of pick-up lenss and all the other pick-up lenss are corresponding shooting transducer separately, and the corresponding a plurality of shooting transducers of pick-up lens, etc.About taking the setting of transducer and pick-up lens, corresponded manner depends on the demand of later data processing and the demand of sensor setting.Wherein the mode of the corresponding a plurality of pick-up lenss of same shooting transducer is conducive to simplify the processing technology of taking transducer.
As shown in Figure 4, be the layout schematic diagram between pick-up lens and the shooting transducer, the distance between the first pick-up lens 2A and the object is p, and the diameter width of the first pick-up lens 2A is d, and the first pick-up lens 2A and the first distance of taking between the transducer 9A are μ.Image is taken on the transducer through being incident upon behind the pick-up lens, takes this image of sensor record, makes it to be converted to the convenient signal of telecommunication of processing, the image that obtains taking from light signal.
Taking module 2 of the present utility model has increased the pick-up lens of some, between the different pick-up lenss or collaborative work between auxiliary pick-up lens and the main pick-up lens, can improve the definition of image; In order to obtain high temporal frequency image, make the shutter of different pick-up lenss have temporal different compensation simultaneously.The time for exposure of all pick-up lenss all is interrelated and known.
As shown in Figure 1, the high speed video camera of the present embodiment also comprises led light source module 1, image processing module 4 and is communicated with the data wire 7 of each module.
Wherein, described led light source module 1 comprises LED light emitting array 6, and the led light source module 1 of the present embodiment is equivalent to the photoflash lamp of high speed video camera, but different from general photoflash lamp be to utilize differently photochromic target is carried out index.
Led light source module 1 as shown in Figure 5, its light-emitting area is provided with LED light emitting array 6, this light emitting array 6 forms (except specifying, representing the red, green, blue color with R, G, B respectively in this specification) by three kinds of LED that glow color is respectively red, green, blue, and LED of all kinds is spaced.In the light emitting array 6 shown in Figure 5, each classifies the LED of identical glow color as, and R, G, B are spaced successively.
Described LED ordered arrangement of all kinds integrates, and forms the luminous array of LED on a plane, can be to be integrated in light-emitting area in the same plane, also can be integrated into the light-emitting area that is conducive to optically focused with radian.
The LED of all kinds of described composition LED light emitting array can be LED packaged lamp pearl, or led chip, can only encapsulate a kind of led chip of color in described single LEDs packaged lamp pearl, can also encapsulate simultaneously the led chip of two or three color; In addition, can also obtain light emitting array by the mode of integration packaging.
In other embodiments, can also adopt the combination of other three kinds of colors, such as purple, Huang, blue or green combination etc.; Can also use the combination of two kinds of colors, such as blue, yellow combination, blue or green, red combination, purple, green combination etc.At present, aspect Digital Image Processing, using more is the combination of R, G, B, and the LED product of R, G, B is also more common, and price is low, and luminous mass is good, so the present embodiment selects to adopt the compound mode of R, G, B.
Fig. 6 shows is led light source module in the another kind of execution mode, and it is to arrange in the mode of projecting apparatus, and LED lamp pearl 6 encapsulation that are specially by different color light project light onto on the object by one or more projection lens 7 together.
High speed video camera among Fig. 1 comprises two led light source modules 1, is located at the both sides of taking module 2.Because taking module 2 has a plurality of pick-up lenss, a plurality of shooting angle if use single light emitting module, easily make the details of Partial angle can not get sufficient illumination.Thereby in the both sides of taking module light emitting module is set, and make light more even, flash of light is without the dead angle.
Described ON-OFF control circuit module 5 is used for the illumination of control led light source module 1, makes it the shutter release collaborative work with taking module 2.The LED(R of every kind of different colours, G, B) control 5 by an ON-OFF control circuit, the LED of color of the same race controls simultaneously.For making things convenient for Collaborative Control, the shutter release of taking module is also by these ON-OFF control circuit module 5 controls.
LED(R of all kinds, G, B) switch by ON-OFF control circuit module 5 according to temporal frequency and the front shutter collaborative work set, LED of all kinds lights successively according to known temporal frequency in the camera lens of setting exposes the time (aperture time) of obtaining piece image, then obtain image by taking transducer, this image has comprised R, G, B three width of cloth color separated image, this three width of cloth image is the different time point of correspondence respectively, after this three width of cloth image extracted respectively, can obtain target object at the moving image of these three time points.
As depicted in figs. 1 and 2, the image processing module 4 of the high speed video camera of the present embodiment comprises rgb signal collector 3, take transducer 9 with the image uploading obtained to rgb signal collector 3, rgb signal collector 3 is submitted to image processing module 4 with view data to carry out data and processes.The image electronic information that image processing module 4 will receive from rgb signal collector 3 synthesizes dynamic video through algorithm, is transferred to outer computer.
Described image processing module 4 also is used for regulating according to external control signal the operating state of transducer and/or camera lens.Because image processing module can be regulated the operating state of transducer and/or camera lens according to the control signal of external equipment input, so can make this device always work in comparatively ideal state, guarantee that the dynamic video signal that gathers and export is accurate.
As shown in Figure 7, be the course of work of the present embodiment high speed video camera, its specific works step is as follows:
1) as requested temporal frequency is set the shutter frequency of a plurality of camera lenses and the switching frequency of led light source array of all kinds.The shutter opening time of pick-up lens is associated with led light source switching time.
2) when target object 8 express deliveries are moved, the pick-up lens shutter opening exposes and obtains piece image.At shutter opening to the time of closing, glow color be R, G, B the led array sequence switch once, each switch should cut out first the led array of current color, opens the led array of next color again; Take transducer and get access to the piece image that includes R, G, B background this moment, is sent in the rgb signal collector by transducer; Continue to take according to this rule, a series of images that gets access to all is sent in the rgb signal collector.
3) image in the rgb signal collector is sent in the image processing module processes, time sequencing according to led array switch of all kinds extracts R, G, B color separated image from R, G, B vision-mix, through Algorithms Integration, finally form continuous clearly video.For conveniently watching, each color separated image unification is converted to black and white image.
The order of above R, G, B flash of light is interchangeable.
Among Fig. 8, between the exposure period of ordinary video camera lens in, multiple time-tracking point is demarcated.Among this figure, 5 time-tracking points are demarcated, and first is the white illumination tracking point, and second is red, and the 3rd is blue, and the 4th is green, and the 5th is and to red, above each time point can both obtain piece image 10
The high speed video camera of the present embodiment can collect the image information of high-speed moving object, through calculating and the image processing, thereby can observe motion mode and rule with the measurement target object, its typical application is required high-speed camera in the industry, can also be applied to the occasion that other need to use high-speed camera.
The present embodiment is by the led light source of dot matrix and the setting of two above camera lenses, utilize synchronous led light source switch and pick-up lens time for exposure, collect the image series information under the background of not sharing the same light, thereby be conducive to calculate to form continuous video image by outer computer, solve the problem that traditional high-speed camera can't clear accurate acquisition graphical information with this.
The present embodiment utilizes the illumination to the high-speed moving object object, and short power off periods can be used for the time expand frequency.The utility model needs the led light source lighting apparatus of the shutter synchronization control of at least one and pick-up lens, and target object preferably is under the dark surrounds, and itself is not luminous.The time for exposure of common pick-up lens is set to be operated in the normal video speed of 30-40ms, and for example, 25 or 30 frame/seconds, when activating shutter, led light source also is activated and enters into predetermined switching time.
Be exemplified below: the speed of pick-up lens shutter was made as for 30 frame/seconds, namely the 33ms switch once, if use 3 kinds of led light source colors, every kind of color has the irradiation time of 10ms and the interlunation of 1ms.Be equivalent to the speed that pick-up lens had for 90 frame/seconds.As seen this device has improved the capture rate of common picture pick-up device.
Fig. 9 is the schematic diagram of the utility model specific embodiment high-speed camera-shooting method to shown in Figure 11:
As shown in Figure 9, be operated in simultaneously the method for the high-speed camera under the not homochromy LED flash of light for all pick-up lenss of the present embodiment, work as object of which movement, the led light source of different colours (R, B, G) shines in succession, the shutter Simultaneous Switching of all pick-up lenss, each pick-up lens all obtain the image that a width of cloth comprises R, B, G background in single shutter.Within the time of shutter single opening and closing, glow color be R, B, G the led array sequence switch once, each switch cuts out first the led array of current color, opens the led array of next color again.
From the resulting vision-mix that comprises R, B, G background, extract its R, B, G color separated image, because different color separated image have represented the target object of different time points, according to its sequencing R, B, G color separated image are arranged in order, originally be a photo of a time point, become three photos of three time points, be equivalent to capture rate and improved three times.
Many camera lenses multisensor is worked simultaneously and can be solved not fogging clear problem, and obtains more amount of images.Not foggingly clearly can think indeterminacy, if only use a pick-up lens, the direction of target object just can not measure exactly.Use a plurality of pick-up lenss just can obtain many amount of images, extract more clearly image thereby synthesize by algorithm.
As shown in figure 10, be not operated in simultaneously the method for the high-speed camera under the homochromy LED flash of light for all pick-up lenss of the present embodiment, four pick-up lens shutters are worked successively with the frequency of setting respectively.Then the image that gets access in the same time interval is arranged in order, through Algorithms Integration, can obtains corresponding video, improved capture rate.Employed LED photoflash lamp can use white in this method, also can use monochromatic.
As shown in figure 11, be the method that pick-up lens is operated in respectively the high-speed camera under the homochromy and not homochromy LED flash of light in the present embodiment.Among this figure, four pick-up lens shutters are worked successively with the frequency of setting respectively, obtain the consecutive image of high-speed moving object by method shown in Figure 9; Meanwhile, each pick-up lens obtains the vision-mix that comprises G, B, R background by method shown in Figure 8, namely red, blue, green LED light source lights successively according to setpoint frequency, within a switching time of each pick-up lens shutter, obtain the vision-mix of a width of cloth take blue, red, green as background colour, from the resulting vision-mix that comprises R, B, G background, extract its R, B, G color separated image again, thereby obtain the consecutive image of high-speed moving object.
According to image capture method embodiment illustrated in fig. 11, correspondingly increase the frequency (flashing rate) that led light source illuminates action, the amount of images that can get access to so will further be multiplied, and corresponding capture rate also can be multiplied.So just can greatly increase the initial data of analysis image motion state.
As seen, the method for high-speed camera shown in Figure 11, its detailed step is:
Dark environment can make the led light source that defines in the utility model seem strongly more a lot of than the light of environment, can give prominence to all led light sources to the irradiation of target object, resulting image has better effect, can strengthen in addition the effect of the image that the later stage obtains.
The reflection characteristic of step 2, calibration target object.Target object is carried out different led light source exposures, take respectively the image of its white light, ruddiness, green glow, blue light, and determine the relation that they make up each other, to set up the reflection characteristic of target object.
By target object being carried out the test to versicolor reflection characteristic, obtain the reflectance data to shades of colour light of target object itself.These data will use in the image extraction afterwards.
The photographic schemes of pick-up lens: the pick-up lens that several (among Figure 10 being four) capture rate are identical is according to the predefined uniform time interval, and photographic images successively circulates.For example among Figure 10, the first pick-up lens, the second pick-up lens, the 3rd pick-up lens, the 4th pick-up lens, according to the uniform time interval successively opening and closing shutter once, each pick-up lens is respectively taken an image; After four pick-up lenss are taken one bout successively, again take since the first pick-up lens again, to the end of the 4th pick-up lens, by that analogy, loop.For making shooting more accurate, the time point of each pick-up lens shutter opening is preferably above-mentioned two time points and overlaps after the time point of a upper pick-up lens shutter close.With the image that above-mentioned different pick-up lens circulations are taken, integrate according to the time order and function order, obtain the video of corresponding photographic subjects object.
The exposure scheme of led light source: within the each time time for exposure of each pick-up lens shutter (namely, from shutter opening to the time of closing), led light source is according to the predefined uniform time interval, according to R, G, three kinds of photochromic orders of B target object is exposed, the single image that this moment, pick-up lens obtained is the vision-mix that has comprised R, G, B three time for exposure points.Based on the characteristics that led light source can respond fast, led light source can send the light of approximate square-wave pulse, so that R, G, B light finishes in the short time once to dodge at the utmost point and goes out, and can the phase mutual interference.For example, the speed of pick-up lens shutter was made as for 30 frame/seconds, namely the 33ms switch once, if use 3 kinds of led light source colors (R, G, B), every kind of color has the irradiation time of 10ms and the interlunation of 1ms, every kind can not interfere with each other between photochromic.
Extract first image: the corresponding color separated image of the color that will expose at first extracts from vision-mix, and with this color separated image as the first width of cloth image.In the present embodiment, that be exposed at first is R, then red pixel points all in the vision-mix is extracted as the first width of cloth image.According to the reflection characteristic of the target object of setting up in the second step, the first width of cloth image is calibrated, make its figure more accurate and more clear.The pixel of corresponding the first width of cloth image in the vision-mix is deducted.
Extract second image: the method according to extracting first image, the corresponding color separated image of the color of next exposure is extracted from the vision-mix that is deducted first image slices vegetarian refreshments, and with this color separated image as the second width of cloth image.In the present embodiment, that next is exposed is G, is extracted as the second width of cloth image deducting green pixel points all in the vision-mix of R pixel.According to the reflection characteristic of the target object of setting up in the second step, the second width of cloth image is calibrated, make its figure more accurate and more clear.From the vision-mix that is deducted first image corresponding pixel points, again deduct pixel corresponding to the second width of cloth image.
Extract the 3rd image: the corresponding color separated image of the color that will expose at last extracts, as the 3rd width of cloth image.In the present embodiment, that be exposed at last is B, and vision-mix has been deducted corresponding R and G pixel when first of extraction and second image, and its remaining B pixel is the 3rd image.According to the reflection characteristic of the target object of setting up in the second step, the second width of cloth image is calibrated, make its figure more accurate and more clear.
Adopt image of every extraction, namely deduct the method for respective pixel point in the vision-mix, make extraction rate higher, and image is clearer.
For watching conveniently, all color separated image unifications are converted to black and white image.
The LED lighting source that this high-speed camera-shooting method utilizes, in recent years, the development of LED (light-emitting diode) is very fast, and is daily and commercial Application is more and more universal, so that it has reduced production cost and has improved performance.The efficient of led light source is very high.And can control under the high-speed case of very high accuracy and Microsecond grade even shorter time the switching time of LED.These two factors provide extraordinary condition for the utility model.
The according to the above description announcement of book and instruction, the utility model those skilled in the art can also change and revise above-mentioned execution mode.Therefore, the embodiment that discloses and describe above the utility model is not limited to also should fall in the protection range of claim of the present utility model modifications and changes more of the present utility model.
Claims (18)
1. high speed video camera of using the high-speed switch light source is characterized in that: comprise taking module, high-speed switch light source module, control circuit module and image processing module open the light;
Described taking module comprises shutter, pick-up lens and the shooting transducer corresponding with pick-up lens;
Described high-speed switch light source comprises 2 kinds of LED luminescent devices with different color light at least;
Described ON-OFF control circuit module is connected with shutter with the led light source module, is used for led light source module and shutter are linked, and makes the led light source module carry out successively the switch motion of different colored light sources in the time for exposure at a shutter;
Described shooting transducer is passed to image processing module with the vision-mix that shutter obtained in the time for exposure, by image processing module image is extracted with video and integrates.
2. high speed video camera according to claim 1, it is characterized in that: described high-speed switch light source module is led light source.
3. high speed video camera according to claim 2, it is characterized in that: described led light source module is any two kinds or whole combination of red-light LED, green light LED and blue-ray LED.
4. according to claim 2 or 3 described high speed video cameras, it is characterized in that: described led light source module arranges with array format, is specially the array that array that the LED lamp bead seal dress by different color light forms or different color light led chip form.
5. according to high speed video camera claimed in claim 4, it is characterized in that: the LED luminescent device of described different glow colors is spaced in the light emitting array.
6. according to claim 2 or 3 described high speed video cameras, it is characterized in that: described led light source module arranges in the projecting apparatus mode, and the LED lamp bead seal dress that is specially by different color light projects light onto on the object by one or more projection lens together.
7. according to high speed video camera claimed in claim 2, it is characterized in that: the LED luminescent device of described each glow color has several, and the LED luminescent device of all glow colors forms a planar light emitting array.
8. according to high speed video camera claimed in claim 7, it is characterized in that: described planar light emitting array is flat luminous array or the cambered surface light emitting array that is conducive to optically focused.
9. according to high speed video camera claimed in claim 2, it is characterized in that: described led light source module has a plurality of, and the Different Light module is shone target object from different perspectives.
10. according to high speed video camera claimed in claim 9, it is characterized in that: described led light source module is controlled simultaneously by the same control circuit module of opening the light, or by open the light control circuit module cooperative control of difference.
11. high speed video camera according to claim 1 is characterized in that: described shutter is mechanical shutter, is specially by the mechanical structure of machinery folding with the control single exposure;
Perhaps, described shutter is electronic shutter, is specially the electronic control module that the sensor photosensitive time is taken in control.
12. according to high speed video camera claimed in claim 1, it is characterized in that: described image processing module comprises the rgb signal collector, and the captured view data that obtains of taking module is passed to image processing module by the rgb signal collector.
13. according to high speed video camera claimed in claim 1, it is characterized in that: described pick-up lens has a plurality of, and these a plurality of pick-up lenss are used for the respectively synchronous photographic subjects object from different visual angles.
14. according to high speed video camera claimed in claim 1, it is characterized in that: described pick-up lens has a plurality of, and these a plurality of pick-up lenss are used for according to predefined order, and circulation is taken successively.
15. according to claim 13 or 14 described high speed video cameras, it is characterized in that: described shooting transducer has a plurality of, the corresponding a plurality of pick-up lenss of a described shooting transducer or shooting transducer and pick-up lens are corresponding one by one.
16. according to the described high speed video camera of claim 15, it is characterized in that: described all shooting transducers form a sensor plane.
17. according to claim 13 or 14 described high speed video cameras, it is characterized in that: described pick-up lens interconnects in mode one-body molded or splicing by fixed frame.
18. according to the described high speed video camera of claim 17, it is characterized in that: described all pick-up lenss are arranged in a camera lens face, and the camera lens face is straight surface, has the cambered surface of radian or the combinatorial surface that is spliced in the mode of certain knuckle by several planes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201220446246.8U CN202918392U (en) | 2012-09-03 | 2012-09-03 | High-speed pick-up device applying quick switch light source |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201220446246.8U CN202918392U (en) | 2012-09-03 | 2012-09-03 | High-speed pick-up device applying quick switch light source |
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| CN202918392U true CN202918392U (en) | 2013-05-01 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014032386A1 (en) * | 2012-09-03 | 2014-03-06 | 广州市盛光微电子有限公司 | High speed image shooting method utilizing quick switch light source and application device |
| CN107450357A (en) * | 2017-07-10 | 2017-12-08 | 国网江苏省电力公司盐城供电公司 | A kind of illumination for intelligent substation and IMAQ inter-linked controlling method |
| WO2018041169A1 (en) * | 2016-08-31 | 2018-03-08 | 上海微电子装备（集团）股份有限公司 | Automatic optical inspection device and inspection method |
| RU2795189C1 (en) * | 2022-02-03 | 2023-05-02 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" (Госкорпорация "Росатом") | Method for video recording of a fast process accompanied by intense radiation in optical range |
-
2012
- 2012-09-03 CN CN201220446246.8U patent/CN202918392U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014032386A1 (en) * | 2012-09-03 | 2014-03-06 | 广州市盛光微电子有限公司 | High speed image shooting method utilizing quick switch light source and application device |
| WO2018041169A1 (en) * | 2016-08-31 | 2018-03-08 | 上海微电子装备（集团）股份有限公司 | Automatic optical inspection device and inspection method |
| CN107450357A (en) * | 2017-07-10 | 2017-12-08 | 国网江苏省电力公司盐城供电公司 | A kind of illumination for intelligent substation and IMAQ inter-linked controlling method |
| RU2795189C1 (en) * | 2022-02-03 | 2023-05-02 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" (Госкорпорация "Росатом") | Method for video recording of a fast process accompanied by intense radiation in optical range |
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