CN101257575B - Imaging apparatus and reproducing apparatus - Google Patents
Imaging apparatus and reproducing apparatus Download PDFInfo
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- CN101257575B CN101257575B CN2008100820503A CN200810082050A CN101257575B CN 101257575 B CN101257575 B CN 101257575B CN 2008100820503 A CN2008100820503 A CN 2008100820503A CN 200810082050 A CN200810082050 A CN 200810082050A CN 101257575 B CN101257575 B CN 101257575B
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Abstract
The invention provides an imaging apparatus which can prevent the candid for detecing the imaging signal for shooting the film projected picture in the theater for presenting the film and the line, wherein after the image shot by an image part (101), the average brightness for shooting the image is figured in a field average brightness figuring part. A control part (106) measures the field average brightness of five continuous shooting fields, the candid of the film is detected through judging the ratio of the max brightness and the minimum brightness. When detecting the candid of the film, the warning information is displayed in the image display part (103) by the transmitting part (105), and the recording data of the recording medium is deleted by the recoding part (102), or the warning information and the image are recorded to the recording medium.
Description
Technical field
The present invention relates to and a kind ofly in showing film constant pitch purpose arenas, prevent the camera head of the behavior of taking on the sly and the replay device of the playback of the image that prevents to take on the sly.
Background technology
All the time, exist in the problem of taking on the sly and the what is called of its illicit copy being made duplicates such as pirate DVD by camera head in the film constant pitch purpose arenas of showing.In recent years, along with advancing by leaps and bounds of the resolution of camera head, occurred and HD (High Definitiontelevision: HDTV (High-Definition Television)) corresponding equipment, can carry out the filming image of high image quality.In this case, take on the sly and further become very big problem.
This has been proposed following scheme (for example with reference to patent documentation 1): will be as the far distance controlled of the camera head code of the infrared light of signal as the operation of recording that stops camera head, send by the dispensing device that is arranged in the arenas, thereby stop the record that continues.
And proposed following scheme (for example with reference to patent documentation 2): use passive-type that camera head has or active RF label, data that read during according to the arenas admission and the data that read when withdrawing from the arena are judged the behavior of taking on the sly of the camera head in the arenas.
Patent documentation 1: the Japan Patent spy opens the 2004-56769 communique
Patent documentation 2: the Japan Patent spy opens the 2005-51487 communique
But in patent documentation 1 described scheme, exist to need the far distance controlled of many transmission camera heads with the device of signal, the problem of the equipment of arenas etc. is set.
And, in patent documentation 2 described schemes, exist camera head need have the RF label, and in arenas, need to be provided with the problem of equipment such as RF label reader, Management label database of information be servo.
Further, in patent documentation 1,2 described separately schemes, be the scheme that prevents the behavior of taking on the sly by camera head reception optical control signal, wireless signal, have the problem that is easy to the behavior of taking on the sly by the parts that camera head self applied shielded from light control signal, wireless signal.
Further there is following problem again: in replay device, detecting unit is not set, in arenas, whether is to have carried out the playback image of the behavior of taking on the sly by camera head to detect this reproduced picture, thereby can directly resets.
Summary of the invention
The present invention produces in view of above problem, and its purpose is to provide a kind of change of not carrying out arenas equipment, append and detect the signal of video signal of having taken the motion-picture projection image, prevents the camera head of the behavior of taking on the sly in the arenas; And detect the signal of video signal of having taken the motion-picture projection image, prevented to carry out the replay device of playback of the image of the behavior of taking on the sly in the arenas.
The present invention is in order to solve above-mentioned problem, by following 1)～10) described means formation.
That is,
1) a kind of camera head is characterized in that, has:
Image pickup part carries out light-to-current inversion by imaging apparatus to the shooting light that enters, and is transformed to signal of video signal;
Recording portion writes down above-mentioned signal of video signal;
Image displaying part shows above-mentioned signal of video signal;
Mean flow rate calculating part calculates 1 mean flow rate of above-mentioned signal of video signal;
Test section, in the scheduled period of above-mentioned signal of video signal, calculate the maximum of above-mentioned 1 mean flow rate and the ratio of minimum value, whether by detecting above-mentioned ratio whether more than the threshold value of determining in advance, detecting above-mentioned signal of video signal is the signal of video signal of having taken the motion-picture projection image; With
The warning sending part when above-mentioned test section detects when being the signal of video signal of having taken the motion-picture projection image, sends to above-mentioned image displaying part with alert message.
2) a kind of camera head is characterized in that, has:
Image pickup part carries out light-to-current inversion by imaging apparatus to the shooting light that enters, and is transformed to signal of video signal;
Recording portion writes down above-mentioned signal of video signal;
Image displaying part shows above-mentioned signal of video signal;
The mean flow rate calculating part, 1 of above-mentioned signal of video signal is divided into the 1st during and the 2nd during, calculate during the above-mentioned the 1st and separately mean flow rate during the above-mentioned the 2nd;
Test section, in the scheduled period of above-mentioned signal of video signal, according to each above-mentioned 1, calculate during the above-mentioned the 1st and the maximum of the mean flow rate during the above-mentioned the 2nd and the ratio of minimum value, whether by detecting above-mentioned ratio whether more than the threshold value of determining in advance, detecting above-mentioned signal of video signal is the signal of video signal of having taken the motion-picture projection image; With
The warning sending part when above-mentioned test section detects when being the signal of video signal of having taken the motion-picture projection image, sends to above-mentioned image displaying part with alert message.
3) a kind of camera head is characterized in that, has:
Image pickup part carries out light-to-current inversion by imaging apparatus to the shooting light that enters, and is transformed to signal of video signal;
Recording portion writes down above-mentioned signal of video signal;
Image displaying part shows above-mentioned signal of video signal;
Brightness measuring portion is according to the brightness of each above-mentioned shooting light of determining in advance that enters of period detecting;
The mean flow rate calculating part calculates the mean flow rate of the shooting light of being measured by above-mentioned brightness measuring portion during above-mentioned according to each;
Test section, calculate a plurality of above-mentioned during in the maximum of mean flow rate of above-mentioned shooting light and the ratio of minimum value, whether by detecting above-mentioned ratio whether more than threshold value, detecting above-mentioned signal of video signal is the signal of video signal of having taken the motion-picture projection image; With
The warning sending part when above-mentioned test section detects when being the signal of video signal of having taken the motion-picture projection image, sends to above-mentioned image displaying part with alert message.
4) according to 1) to 3) any described camera head, it is characterized in that, has control part, record in above-mentioned recording portion under the state of above-mentioned signal of video signal, when above-mentioned test section detects when being the signal of video signal of having taken the motion-picture projection image, control, to force to stop the record of above-mentioned recording portion.
5) according to 1) to 3) any described camera head, it is characterized in that when above-mentioned test section detects when being the signal of video signal of having taken the motion-picture projection image, above-mentioned recording portion is the above-mentioned alert message of overlapping record on the imaged image of record.
6) according to 4) described camera head, it is characterized in that above-mentioned control part is controlled above-mentioned recording portion, to delete the signal of video signal that above-mentioned recording portion is write down till stop to write down from opening entry.
7) a kind of replay device is characterized in that, has:
Playback portion, the playback signal of video signal also is provided to image displaying part;
Mean flow rate calculating part calculates 1 mean flow rate of the playback signal of video signal of being reset by above-mentioned playback portion;
Test section, in the scheduled period of above-mentioned playback signal of video signal, calculate the maximum of above-mentioned 1 mean flow rate and the ratio of minimum value, whether by detecting above-mentioned ratio whether more than the threshold value of determining in advance, detecting above-mentioned playback signal of video signal is the signal of video signal of having taken the motion-picture projection image; With
The warning sending part when above-mentioned test section detects when being the signal of video signal of having taken the motion-picture projection image, sends to above-mentioned playback portion with alert message.
8) a kind of replay device is characterized in that, has:
Playback portion, the playback signal of video signal also is provided to image displaying part;
The mean flow rate calculating part during 1 of the playback signal of video signal that will reset by above-mentioned playback portion is divided into the 1st and during the 2nd, calculates during the above-mentioned the 1st and separately mean flow rate during the above-mentioned the 2nd;
Test section, a plurality of above-mentioned during in each above-mentioned 1 in, calculate during the above-mentioned the 1st and the maximum of the mean flow rate during the above-mentioned the 2nd and the ratio of minimum value, whether by detecting above-mentioned ratio whether more than the threshold value of determining in advance, detecting above-mentioned playback signal of video signal is the signal of video signal of having taken the motion-picture projection image; With
The warning sending part when above-mentioned test section detects when being the signal of video signal of having taken the motion-picture projection image, provides control signal from above-mentioned test section, and alert message is sent to above-mentioned playback portion.
9) according to 8) described replay device, it is characterized in that when above-mentioned test section detects when being the playback signal of video signal of having taken the motion-picture projection image, above-mentioned playback portion makes above-mentioned alert message and above-mentioned playback signal of video signal overlapping.
10) according to 7) or 8) described replay device, it is characterized in that having control part, when above-mentioned test section detects when being the playback signal of video signal of having taken the motion-picture projection image, force to stop the playback of above-mentioned playback portion.
According to camera head of the present invention, the behavior that can go out to take on the sly according to the image detection that camera head is taken can not utilize the control of outsides such as wireless signal transmission, infrared ray transmission, the transmission of RF label to prevent the behavior of taking on the sly.
And, owing to do not utilize external control, therefore need not to carry out appending, changing of arenas equipment, also need not processing, the editor of cinefilm, can prevent the behavior of taking on the sly.
Further,, can judge whether it is the image of taking on the sly, the playback of the image that in replay device, can prevent to take on the sly according to the image of resetting according to replay device of the present invention.
Description of drawings
Fig. 1 is the figure of an example of the structure of the expression camera head that is applicable to embodiment 1.
Fig. 2 is the figure that is used to illustrate the moving-picture frame and the relation of shooting field.
Fig. 3 is the figure that is used to illustrate the projection method of film.
Fig. 4 is the figure of the example that changes of the field mean flow rate when being used to illustrate common shooting.
Fig. 5 is used to illustrate that the field mean flow rate when film is taken on the sly changes the figure of an example of example.
Fig. 6 is used to illustrate that the field mean flow rate when film is taken on the sly changes the figure of an example of example.
Fig. 7 is an example of flow chart that is used to illustrate the action of the camera head that is applicable to embodiment 1.
Fig. 8 is the figure of an example of the structure of the expression camera head that is applicable to embodiment 2.
Fig. 9 is the key diagram of the detection method of taking on the sly of film.
Figure 10 is the figure (NTSC mode) that is used to illustrate the moving-picture frame and the relation of shooting field.
Figure 11 is the figure (NTSC mode) that is used to illustrate the example that the field mean flow rate when film is taken on the sly changes.
Figure 12 is the figure (PAL mode) that is used to illustrate the moving-picture frame and the relation of shooting field.
Figure 13 is the figure (PAL mode) that is used to illustrate the example that the field mean flow rate when film is taken on the sly changes.
Figure 14 be used to illustrate from during Ts1 and during the figure (NTSC mode) of situation of ratio minimum of the mean flow rate that obtains of Ts2.
Figure 15 be used to illustrate from during Ts1 and during the figure (PAL mode) of situation of ratio minimum of the mean flow rate that obtains of Ts2.
Figure 16 is an example of flow chart that is used to illustrate the action of the camera head that is applicable to embodiment 2.
Figure 17 is the figure of an example of the structure of the expression camera head that is applicable to embodiment 3.
Figure 18 is the figure of the example that changes of the mean flow rate when being used to illustrate common shooting.
Figure 19 is the figure that is used to illustrate the relation of moving-picture frame and brightness measuring frame number.
Figure 20 is the figure that is used to illustrate the relation of moving-picture frame and brightness measuring frame number.
Figure 21 is the figure (the brightness measuring frame number is in the time of 40/ second) that is used to illustrate the example that the mean flow rate when film is taken on the sly changes.
Figure 22 is the figure (the brightness measuring frame number is in the time of 60/ second) that is used to illustrate the example that the mean flow rate when film is taken on the sly changes.
Figure 23 is the figure (the brightness measuring frame number is in the time of 120/ second) that is used to illustrate the example that the mean flow rate when film is taken on the sly changes.
Figure 24 is the flow chart that is used to illustrate the action of the camera head that is applicable to embodiment 3.
Figure 25 is the figure that is used to illustrate during the brightness measuring.
Figure 26 is the figure of an example of the structure of the expression replay device that is applicable to embodiment 4.
Figure 27 is the figure of an example of the structure of the expression replay device that is applicable to embodiment 5.
Embodiment
Below be used to the best mode of the camera head implementing the present invention relates to by preferred embodiment explanation.
(embodiment 1)
Explanation is applicable to the topology example of the camera head of embodiment 1 with reference to Fig. 1.Image pickup part 101 is the signal of telecommunication with the image transform of taking, and plays the focus that makes lens and focus on the first-class optical function of the body that is taken.Recording portion 102 is written to the image of taking in the recording mediums such as tape, HDD, disk, memory, CD.And, according to the deletion of carrying out record data from the indication of control part 106.Image displaying part 103 is when photographic images, shooting, and the demonstration time etc. are taken required information, and displayed record is to the image of recording portion 102.Field mean flow rate calculating part 104 calculates the mean flow rate of 1 (field, field) of photographed images.Warning sending part 105 when image displaying part 103 shows alert message, also sends alert message to recording portion 102 when control part 106 detects taking on the sly of film.Recording portion 102 makes alert message and photographed images record overlappingly.
With reference to Fig. 2～Fig. 6 the method for discrimination that common shooting and film are taken on the sly is described at this.Fig. 2 is the figure of relation of shooting field of the camera head of expression moving-picture frame and NTSC mode.As shown in the drawing, film is 24fps (24 frame/second), and the picture field of the camera head of NTSC mode is 60fps (60/second=30 frame/second), that is, 5 of 2 frames of film and photographed images is identical length.
Fig. 3 is the figure of the projection method of expression film.Cinefilm was 24 frame/seconds, and usually when arenas is shown, if made directly carry out projection with the light and shade of per second 24 times 24 frame/seconds, can make the viewing people feel the flickering that is out of patience.Therefore,, carry out the switch motion of shutter, so that first's projection, not projection of second portion, third part projection, the 4th not projection of part (transmission film) look with 48 frames/projection second, thereby alleviate flickering with the 1 frame quartering.So, in 2 frame films, exist 4 not projections during.That is, according to the relation of Fig. 2, in the camera head of NTSC mode, in 5 of the photographed images, take 4 not projections during.
Fig. 4 is the figure that the field mean flow rate when representing shooting usually changes example.As shown in the drawing, when carrying out the common shooting of image takings such as personage, scenery, the image of record is continuous in the shooting, and the variation of the field mean flow rate of shooting is less.The situation of the scene that shooting brightness variation is rapid seldom can think that the situation that this state continues for a long time can not take place.
Field mean flow rate when Fig. 5 represents that film is taken on the sly changes example 1.For the situation that the projection and the shooting of the frame of film begins simultaneously, represent each field mean flow rate.
Among Fig. 5, A1～the A5 that puts down in writing in the moving-picture frame represents moving-picture frame, and except the diverse situations of scene such as scene variation, it is bigger poor mostly can to think under the situation that field mean flow rate between the adjacent moving-picture frame does not have, therefore in this embodiment, think that also the field mean flow rate of frame A1～A5 is identical.And the A1 of record represents to have taken moving-picture frame A1 in the shooting field, and A2～A5 too.
The 1st and the 2nd shooting is taken during the projection of all moving-picture frame A1, also takes the part during the not projection simultaneously.Therefore, in whole, taken projection during the time brightness be that the brightness of 100% o'clock the 1st and the 2nd shooting field is 62.5% brightness.This brightness is maximum (Ymax) in 5 continuous shooting fields.
On the contrary, the 4th and the 5th field all take not projection during, therefore in 5 continuous shootings, brightness is minimum value (Ymin), the brightness of the 4th and the 5th field be in whole field, taken projection during the time brightness be 100% o'clock 37.5%.The 3rd shooting be during the projection and during the not projection each half take, so brightness is median.That is, during 4 not projections in two moving-picture frames, the field mean flow rate of the shooting field of shooting has maximum brightness and changes.
Field mean flow rate when Fig. 6 represents that film is taken on the sly changes example 2.Projection for shooting and the frame of film begins the situation of beginning that staggers, and represents each field mean flow rate.
Described A1～the A5 of Fig. 6 of moving-picture frame and shooting field is identical with implication shown in Figure 5.The X1 of Fig. 6 is the field of frame A1 and A2 of shooting, and X2 represents to take the field of A3 and A4, and X3 represents to take the field of A5 and A6.
The same with Fig. 5, the brightness of A1～A5 is made as all identical, thus the field mean flow rate of X1～X3 also can be when taking single moving-picture frame the same the processing.In Fig. 6, the 2nd shooting is minimum brightness when projection (all 37.5%), and the 4th and the 5th shooting are high-high brightness when projection (whole 62.5%).
In Fig. 5 and Fig. 6, represented the variation of the field mean flow rate of the shooting field under two camera times, clearly, no matter which moving-picture frame begun shooting constantly, in 5 continuous shootings, contain a shooting field, the shooting field during taking all not projections during taking all projections at least.That is, the shooting that changes the part that such scene significantly switches except the shooting scene outside the venue, the field average brightness value of continuous 5 shootings comprises minimum brightness and the high-high brightness because of producing during the not projection.
The brighteness ratio of this high-high brightness and minimum brightness is greatly to 1.67 (62.5 ÷ 37.5), and per 5 shooting Continuous Observation arrive, the brightness variable condition that can not produce when being general shooting.That is,, detect the brighteness ratio of high-high brightness and minimum brightness, can differentiate the behavior of taking on the sly of film by measuring the field mean flow rate of continuous 5 shooting fields.
Describe the action of camera head in detail with reference to Fig. 1 and Fig. 7.Fig. 7 represents to be applicable to the flow chart of action of the camera head of embodiment 1.
As shown in Figure 7, in opening entry, obtain the field mean flow rate (step S01) of each shooting field by field mean flow rate calculating part 104, maximum Ymax and minimum value Ymin according to the field mean flow rate of 5 fields calculate brighteness ratio Yrat (step S02～step S03) by control part 106.
As mentioned above, when the brighteness ratio Yrat of the maximum Ymax of the mean flow rate that detects 5 continuous photographic images fields and minimum value Ymin is 1.67 (62.5 ÷ 37.5), can differentiate the behavior of taking on the sly of film.But the maximum Ymax of mean flow rate, minimum value Ymin may be subjected to the influence of external light etc., therefore take on the sly in order also to detect in this case, will be than 1.67 little values, for example 1.5 be set at set brighteness ratio Ylim.
And, judge the brighteness ratio Yrat try to achieve whether more than the set brighteness ratio Ylim among ROM 108 (step S04), if at this more than ratio then the detection number K (step S05) that adds up.
Then judge detect number K whether the set detection of the detection number determined in advance of the conduct in ROM count (step S06) more than the Kmax, count Kmax when above when detecting number K in set detection, within a certain period of time alert message is presented on the image displaying part 103, and writes down (step S10) overlappingly by recording portion 102 and photographic images.Then,, force end record (step S11), the document image (step S12) that control part 106 deletions have been write down regardless of user's request.
By showing alert message, can make User Recognition because of detecting the behavior of taking on the sly the record that is through with.In addition, although why deleted document image but still alert message recorded on the photographic images, even be, also can make the behavior of taking on the sly lose meaning to medium that can't moment deletion record image because also can significantly reduce the value of document image when taking out recording medium such as tape, CD in moment.
Judge to detect number K whether the set detection of the detection number determined in advance of the conduct in ROM count (step S06) more than the Kmax, when detecting number K and count Kmax, add 5 (step S07) to detecting number of fields F less than set detection.Judge whether and in advance more than the set number of fields Fmax of number of fields of setting (step S08) as being used to detect this detections number of fields F, when detecting number of fields F when set number of fields Fmax is above, to detect number K, detect number of fields F and be set at 0 respectively, and start anew to implement to detect and handle (step S09).When detecting number of fields F, proceed to detect and handle less than set number of fields Fmax.
Illustrate that at this set number of fields Fmax, set detection count Kmax.Take on the sly at short notice when detecting, because the external disturbance such as brightness variation of the image of film might produce mistake and survey.Therefore the possibility of this external disturbance long-time continuous is minimum, if set between to a certain degree detection period, can prevent that then mistake from surveying.On the contrary, take on the sly between detection period in, can carry out the shooting of film, long more possibility of being taken on the sly is big more between detection period.
Therefore, be preferably set to a few minutes～tens minute between detection period.When being 10 minutes between detection period, set number of fields Fmax is 36000 (60/second * 60 seconds * 10 minutes).
Therefore under the situation of present embodiment 1,5 are carried out the detection of taking on the sly for 1 time, if make set number of fields Fmax be 36000 as mentioned above, the detection number of times in then between detection period is 7200 times (5 of Fmax ÷).In this detects number of times, for example half is set at set detection for 3600 times and counts Kmax, when in the detection number of times of Kmax is counted in set detection, detecting the value more than the set brighteness ratio Ylim, be judged to be taking on the sly of film.
In the action specification of above-mentioned flow chart, counting Kmax with set number of fields Fmax, set detection is that fixed value is illustrated, and also can set when taking but set number of fields Fmax, set detection count Kmax.And, carry out taking on the sly for 1 time that to detect be that example is illustrated with 5, but the unit that detects that takes on the sly is not limited to 5, so long as can detect the maximum Ymax of mean flow rate of photographic images field and the number of fields of minimum value Ymin gets final product.
(embodiment 2)
The structure example of the camera head that is applicable to embodiment 2 then is described with reference to Fig. 8.Image pickup part 2101 is the signal of telecommunication with the image transform of taking, and plays the focus that makes lens and focus on optical functions such as the body that is taken.Recording portion 2102 is written to the image of taking in the recording mediums such as tape, HDD, disk, memory, CD.And recording portion 2102 is according to carrying out the deletion of record data from the indication of control part 2106.
With reference to Fig. 9～Figure 13 the common shooting of embodiment 2 and the method for discrimination that film is taken on the sly are described at this.As illustrated in fig. 4, when carrying out the common shooting of the shooting etc. of images such as personage, scenery, the image of record is continuous in the shooting, and the brightness in the field of shooting changes little.
Fig. 9 is take on the sly the key diagram of detection method of expression.Wherein, be that example describes in the NTSC mode.During 1 of photographic images is divided into Ts1 and during Ts2 (Ts1＞Ts2), obtain mean flow rate by mean flow rate calculating part 2104 respectively.From during the photographic images that obtains of Ts1 be used for video recording, from during the photographic images that obtains of Ts2 only be used to the detection of taking on the sly, be not used in video recording.Wherein, the image of video recording only during in the Ts1, if Ts2 excessively increases during therefore making, then the image brightness of video recording descends.Ts1 during this explanation and during Ts2 during the length ratio be 9: 1 situation.
As shown in Figure 9, when the mean flow rate that if the mean flow rate of each time that obtains from the 1st field is Y11 and Y12, establish each time that obtains according to the 2nd field is Y21 and Y22, as shown in Figure 3, during in a frame of film, having not projection of secondary, therefore under the situation of Fig. 9, Y11 is greater than Y12, and Y21 is less than Y22.That is, by relatively during each Ts1 and during the mean flow rate that obtains of Ts2, can detect taking on the sly of film.
Field mean flow rate when Figure 10, Figure 11 represent to take film on the sly by the camera head of NTSC mode changes example.Shown in Figure 10 (a), be 60 times/second under the NTSC mode, therefore when having taken 24 frames of film/second, film 2 frames are the identical time with 5 of photographic images.Therefore, asynchronous during the not projection as shown in figure 11 with each, during each Ts1, during the mean flow rate that obtains of Ts2 according to each and greatly different.
The brightness (Y1max) that Ts1 obtains during the field 1 than from during the brightness (Y1min) that obtains of Ts2 big a lot, and the brightness (Y4min) that Ts1 obtains during the field 4 than from during the brightness (Y4max) that obtains of Ts2 little a lot, can't detected brightness ratio in the time of all can being created in common shooting.On the contrary, during the field 3 Ts1, during the brightness that obtains of Ts2 (in all, differing to establish a capital produces big brightness ratio for Y3max, Y3min) smaller.
The variation example of the field mean flow rate when Figure 12, Figure 13 represent to take film on the sly by the camera head of PAL mode.Shown in Figure 12 (a), be 50 times/second under the PAL mode, therefore when having taken 24 frames of film/second, film 12 frames are the identical time with 25 of photographic images.Therefore, asynchronous during the not projection as shown in figure 13 with each, during each Ts1, during the mean flow rate that obtains of Ts2 the same with the NTSC mode, greatly different according to each.
The brightness (Y1min) that Ts1 obtains during the field 1 than from during the brightness (Y1max) that obtains of Ts2 little a lot, can't detected brightness ratio when being created in common shooting.On the contrary, during the field 2 Ts1, during the brightness that obtains of Ts2 (the same with the NTSC mode, in all, differing to establish a capital produces big brightness ratio for Y2min, Y2max) smaller.
And, shown in Figure 10 (b), Figure 12 (b), the situation that the discontinuities of the frame of also will consider to make a video recording starting position and film staggers.Therefore, after they are put in order, when shooting (24 frame/second),, produce following three kinds of situations (with reference to Figure 11, Figure 13) according to the shooting time started with 60/second (for example NTSC modes) and 50/second (for example PAL modes):
A) Ts2 all takes the situation during the not projection during,
B) Ts2 takes during the projection and both situation during the not projection during,
C) Ts2 all takes the situation during the projection during.
Under situation a), from during the mean flow rate that obtains of Ts2 very little, with from during the ratio of the mean flow rate that obtains of Ts1 be bigger value, be easy to detect and take on the sly.
At b) situation under, from during the mean flow rate that obtains of Ts2 with during Ts1 big-difference too not, it is difficult to detect and takes on the sly than comparing not quite with situation a).
At c) situation under, from during the mean flow rate that obtains of Ts1 and from during the ratio of the mean flow rate that obtains of Ts2, less than situation a), but greater than b) situation.
At c) situation under, during this time Ts1 and during the ratio of mean flow rate of the Ts2 minimum that becomes be under the situation of the phase relation shown in Figure 14 (NTSC mode) and Figure 15 (PAL mode), in order to take on the sly becoming also can detect under the situation of this phase place, need set set brighteness ratio Ylim (Ymax ÷ Ymin) in advance.
As mentioned above, since during Ts1 and during Ts2 during the ratio of length be 9: 1, therefore from during the mean flow rate that obtains of Ts2 be 100% o'clock from during the mean flow rate that obtains of Ts1 be 58.3% under the NTSC mode, be 46.8% under the PAL mode, if the Ylim of NTSC mode, PAL mode is set at 1.71,2.13 respectively, then can detects and take on the sly.
Influence because of external light, from during Ts1, during the mean flow rate that obtains of Ts2 may be affected, therefore take on the sly in order also to detect in this case, be set at respectively than NTSC mode 1.71,2.13 little values of PAL mode, for example set brighteness ratio Ylim is set under the NTSC mode be 1.5, be 1.9 under the PAL mode.
Then be applicable to the action of the camera head of embodiment 2 with reference to Fig. 8 and Figure 16 explanation.Figure 16 is the flow chart that is used to illustrate the action of the camera head that is applicable to embodiment 2.After making the camera head energized, obtain a mean flow rate according to photographic images, thereby determine Ts1, Ts2 (step S201) between sampling period.Judge then whether power knob is pressed, judge promptly whether power supply disconnects (step S202), end process when pressing (step S203).If do not press, then the mean flow rate according to Ts1, Ts2 during each obtains maximum Ymax and minimum value Ymin (step S204), calculates the ratio Yrat (step S205) of mean flow rate according to this Ymax and Ymin.Judge the Yrat try to achieve whether more than the set brighteness ratio Ylim among ROM 2108 (step S206), if more than Ylim, detection number K (step S207) then adds up.
Then accumulation process number of fields F (step S208), whether the value of judgment processing number of fields F is more than set number of fields Fmax (step S209).When handling number of fields F when set number of fields Fmax is above, judge whether to be in (step mule S210) in the record, the mean flow rate of carrying out next when below it detects.Judge when in record detect number K whether the set detection in ROM 2108 count (step S211) more than the Kmax, on image displaying part 2103, show alert message with certain hour when more than it, and record (step S212) in the photographic images by recording portion 2102.Then no matter the user operates purpose and forces the deletion (step S214) of the document image that end record (step S213), control part 2106 write down.
By showing alert message, can make User Recognition because of detecting the behavior of taking on the sly the record that is through with.In addition, although deletion record image but still alert message recorded photographic images why, even be, also can make the behavior of taking on the sly lose meaning to medium that can't moment deletion record image because also can significantly reduce the value of document image when pulling up recording medium such as tape, CD in moment.
When not in record, judge record button whether be pressed (step S215), when pressing, judge to detect number K whether the set detection in ROM 2108 count (step S216) more than the Kmax, when more than it, show the alert message (step S217) that to record a video in the photographed images display part of image displaying part 103 with certain hour.When counting Kmax less than set detection, number K begins video recording (step S218) when detecting.In step S215, when record button is not pressed, sets and detect number K=0, handle number of fields F=0 (step S219), return step S202 then.
Illustrate that at this set number of fields Fmax, set detection count Kmax.Take on the sly at short notice when detecting, because the external disturbance such as brightness variation of the image of film might produce mistake and survey.Therefore the possibility of this external disturbance long-time continuous is minimum, if set between to a certain degree detection period, can prevent that then mistake from surveying.On the contrary, take on the sly between detection period in, can carry out film shooting, long more possibility of being taken on the sly is big more between detection period.
Therefore, be preferably set to a few minutes～tens minute between detection period.When being 10 minutes between detection period, set number of fields Fmax is 36000 (60/second * 60 seconds * 10 minutes).
Under the situation of embodiment 2, the detection of once taking on the sly, therefore when set number of fields Fmax was 36000 as mentioned above, interior detection number of times was 36000 times (1 of Fmax ÷) with number between detection period.In this detects number of times, for example half is set at set detection for 18000 times and counts Kmax, when in the detection number of times of Kmax is counted in set detection, detecting the value more than the set brighteness ratio Ylim, judge that film takes on the sly.
In the action specification of above-mentioned flow chart, counting Kmax with set number of fields Fmax, set detection is that fixed value is illustrated, and also can set when taking but set number of fields Fmax, set detection count Kmax.
And in the foregoing description 2, be illustrated with 24 frame/seconds of film, 60/second or 50/second of photographic images, the frame number of film of the present invention and the number of fields of film are not limited thereto.
And in the foregoing description 2,1 field is divided into two, relatively the mean flow rate that obtains respectively according to them calculates the ratio of mean flow rate, but the number of cutting apart of a field is not limited thereto.
In addition, shown in the field 1 of Figure 11, calculation combination during Ts1 and during the mean flow rate Y1ave of 1 field interval of Ts2, can with judge " during Ts1 mean flow rate below the Y1ave and during the mean flow rate of Ts2 more than the Y1ave " or " during Ts1 mean flow rate more than the Y1ave and during the mean flow rate of Ts2 below Y1ave " in which is set up, as the processing of the step S206 of Figure 16.
And, in the foregoing description 2, with Ts1 during 1 of photographic images is divided into and during Ts2 (Ts1＞Ts2), from during the photographic images that obtains of Ts1 be used for video recording, from during the photographic images that obtains of the Ts2 structure that detects that only is used to take on the sly be that example is illustrated, but also image taking carries out at 1 field interval, the computed segmentation of measuring mean flow rate be during Ts1 and during Ts2.
(embodiment 3)
The topology example of the camera head that is applicable to embodiment 3 then is described with reference to Figure 17.Image pickup part 3101 will be the signal of telecommunication by the captured image transform of the imaging apparatus 3101a that is used to make a video recording, and play the focus that makes lens and focus on the first-class optical function of the body that is taken.And 3101b constitutes by the employed visible light brightness measuring of the judgement of the behavior of taking on the sly element.The luminance transformation that visible light brightness measuring element 3101b has the pickup light that scioptics are entered is the function of the signal of telecommunication.
Recording portion 3102 is written to the image of taking in the recording mediums such as tape, HDD, disk, memory, CD.And, according to the deletion of carrying out record data from the indication of control part 3106.
Image displaying part 3103 is when photographic images, shooting, and the demonstration time etc. are taken required information, and displayed record is to the image of recording portion 3102.Mean flow rate calculating part 3104 calculates the mean flow rate of the brightness that is obtained by visible light brightness measuring element 3101b.Warning sending part 3105 when image displaying part 3103 shows alert messages, sends alert messages to recording portion 3102 when detecting the taking on the sly of film.Recording portion 3102 makes alert message and photographed images carry out record overlappingly.
Control part 3106 is made a video recording, all shootings such as record are handled, recording processing, and has according to the constants in the following ROM 3108 and detect the test section that has or not film to take on the sly.And control part 3016 carries out the control of brightness measuring frame number.RAM 3107 temporary transient mean flow rate measured value, detection number K, the number of processes R that preserve the secondary amount, use the working region during also as calculating.Kmax1, Kmax2, set number of processes Rmax are counted in the following set brighteness ratio Ylim of ROM 3108 storage, set detection, brightness measuring is counted initial value Fini.
Then the common shooting of embodiment 3 and the method for discrimination that film is taken on the sly are described with reference to Figure 18～Figure 23.Embodiment 3 is by the brightness of periodically measuring the shooting light that enters from lens with visible light brightness measuring element 3101b is made a video recording usually and film is taken on the sly differentiation.
Mean flow rate when Figure 18 utilizes visible light brightness measuring element 3101b periodically to measure the brightness of the shooting light that enters from lens when being illustrated in common shooting changes example.As shown in figure 18, when carrying out the common shooting of the shooting etc. of images such as personage, scenery, the image of record is continuous, periodically measures the brightness during certain, and during mean flow rate in trying to achieve between test period, the variation of the mean flow rate during each is less.
The relation of moving-picture frame and brightness measuring frame number then is described with reference to Figure 19.As shown in figure 18, the brightness of each frame of film is except the diverse situation of scenes such as scene change, mostly can think field mean flow rate between the adjacent moving-picture frame under the situation not than big-difference, so in present embodiment 3, be all example mutually with the mean flow rate of frame and describe.As shown in figure 19, when having selected 48 frame/seconds (even-multiples of 24 frame/seconds) during such brightness measuring frame number, between each test period during the inner projection with not projection during ratio identical, the mean flow rate that is therefore obtained between each test period is identical value, can't detect film and take on the sly.And when the brightness measuring frame number of selecting near 48 frame/seconds, the difference of the brightness that is obtained between each test period is less, the detection of can't taking on the sly conscientiously.
And it is not 40 frame/seconds, the 60 frame/seconds as the even-multiple of 24 frame/seconds of motion-picture projection, the situation of 120 frame/seconds that Figure 19 represents to make the brightness measuring frame number.In these brightness measuring frame numbers, between each test period in during the projection with not projection during ratio different.Further, between the test period that Figure 20 represents to amplify.
As shown in figure 20, for example under 120 frame/seconds, measure according to from lens enter the brightness that light obtains the time, brightness during the measurement during the projection of 1 mensuration film, 2 brightness of measuring during the not projection between test period, the ratio of mean flow rate Y1 between each test period and Y2 is compared big a lot during with common shooting.
On the other hand, between test period 3 and test period between 4 be measure during the not projection and projection during brightness that both obtained, during the not projection and projection during ratio definite substantially, but since between test period 3 and test period between 4 projection, the ratio difference during the not projection little, so Y3 and Y4 difference are also little.
And as shown in figure 20, situation is identical when 40 frame/seconds, 60 frames/second.That is to say, asynchronous with 24 frame/seconds as the motion-picture projection frame, when promptly under the frame number that is not even-multiple, measuring the brightness of shooting light, compare during with common shooting the big situation and be not the situation of this situation of the ratio that produces the mean flow rate during two shootings.
Therefore, the ratio of the mean flow rate between between this test period shifts to an earlier date more than the set value of preset threshold in conduct, by detect between this test period more than set value with taking place as the probability more than the set value of preset threshold in advance, can judge the behavior of taking on the sly of film.
As the brightness measuring frame number, so that satisfy following formula 1 and N selects M and N greater than the mode of M, and after selecting to satisfy the brightness measuring frame number of formula 2, the time of taking during the not projection in can significantly changing during each brightness measuring (during the not projection and the phase relation during the brightness measuring), the mean flow rate of measuring down between therefore adjacent test period can not become same value.
N ≠ a * M (a=1,2,4) ... (formula 1)
(1/ motion-picture projection frame number * M)=(1/ brightness measuring frame number * N) ... (formula 2)
M: take on the sly and detect the frame number of required film
N: the mensuration number of times of each brightness measuring frame number (M, N are integer)
Brightness measuring frame number (40 o'clock) M=3, N=5: measure 5 times with film 3 frames
Brightness measuring frame number (60 o'clock) M=2, N=5: measure 5 times with film 2 frames
Brightness measuring frame number (120 o'clock) M=1, N=5: measure 5 times with film 1 frame
Because 40 frame/seconds, 60 frame/seconds, 120 frame/seconds are the brightness measuring frame numbers that satisfy above-mentioned condition, be that example is carried out following explanation to the mean flow rate of measuring therefore with them.
At first, over half for Y1 and Y2 during the projection become maximum mean flow rate in five mean flow rate Y1～Y5 of Figure 19 when to make the brightness measuring frame number be 40 frames/second, over halfly become minimum mean flow rate for Y4 and Y5 during the not projection.
Equally, when to make the brightness measuring frame number be 60 frames/second, comprise that Y1 and the Y2 during all projections becomes maximum mean flow rate, comprise that Y4 and the Y5 during all not projections becomes minimum brightness.
When the brightness measuring frame number is 120 frames/second, all be that Y1 and the Y6 during the projection is maximum mean flow rate, all be Y5 and the Y10 during the not projection is minimum mean flow rate.
As above, by selecting appropriate brightness to measure can take on the sly the conscientiously detection of behavior of frame number.
The then relation that changes with reference to Figure 21, Figure 22, brightness measuring frame number when Figure 23 illustrates that film is taken on the sly and mean flow rate.
Average brightness value when the average brightness value the when average brightness value when Figure 21 represents brightness measuring frame number 40 frames/second, Figure 22 are represented brightness measuring frame number 60 frames/second, Figure 23 are represented brightness measuring frame number 120 frames/second.
From Figure 21, Figure 22, Figure 23 can be clear and definite, during the projection in during the brightness measuring during proportion or the not projection proportion increase along with the brightness measuring frame number and become big, therefore certain during in the maximum of mean flow rate of (for example 5 times during the brightness measuring) and the ratio of minimum value become big.That is,, can judge the behavior of taking on the sly of film more effectively by improving the brightness measuring frame number.
But, if improve the brightness measuring frame number simply, promptly shorten the brightness measuring cycle, then because of the increase of control part amount of calculation, the power consumption of camera head increases.Only improving the brightness measuring frame number under the situation of needs raising accuracy of detection gets final product.
In present embodiment 3, as described below, only under taking the big situation of possibility on the sly, film improves the brightness measuring frame number.
Then be applicable to the action of the camera head of present embodiment 3 with reference to Figure 17 and Figure 24 explanation.Figure 24 is the flow chart that the action of the camera head that is applicable to present embodiment 3 is described.
After making the camera head energized, brightness measuring frame number initial value Fini (step S301) is set, judge then whether power knob is pressed, judge promptly whether power supply disconnects (step S302), end process when pressing (step S303).
Then obtain 5 times average brightness value (step S304, step S305) from the mean flow rate calculating part according to the brightness measuring frame number.Calculate the maximum Ymax of this average brightness value of 5 times and the ratio Yrat (step S306) of minimum value Ymin.Judge the Yrat try to achieve whether more than the set brighteness ratio Ylim in ROM3108 (step S307), if more than Ylim then add up and detect number K (step S308).
At this set brighteness ratio Ylim is described.When measuring with brightness measuring frame number 40 frames/second, according to the projected frame of film and the phase relation of brightness measuring frame, during 5 continuous brightness measurings in, certainly exist:
A) place in all measuring in film 1 frame during the not projection that has 2 places, measure (mean flow rate maximum) during the brightness measuring during the projection in addition;
B) place in all measuring in film 1 frame during the projection that has 2 places, measure (mean flow rate minimum value) during the brightness measuring during the not projection in addition.
Therefore, the mean flow rate when all measuring during the projection between test period was made as 100% o'clock, and above-mentioned mean flow rate a) is 58.3%, and mean flow rate b) is 41.7%.That is, try to achieve the mean flow rate during continuous 5 brightness measurings,, then can detect film and take on the sly if detect the maximum of these 5 mean flow rates and the ratio of minimum value is 1.4 (58.3%/41.7%).Wherein, the maximum of mean flow rate, minimum value may be subjected to the influence of external light etc., therefore take on the sly in order also to detect in this case, Ylim are set at than 1.4 little values for example 1.25.
Then accumulation process frame number R (step S309) judges that the R value is whether more than set value Rmax (step S310).When set value Rmax is above, judge whether to be in (step S311) in the record handling number of fields R, judge whether record button presses (step S316) when below it.When not pressing record button, reset and detect number K and number of processes R (step S323), start anew to detect action.When supressing record button, judge to detect number K and whether count (step S317) more than the Kmax1 in set detection, send alert message (step S318) when more than it.When opening entry (step S319) when Kmax1 is following.
Wherein, detect number K and detecting the possibility that number Klim1 also can't detect because of imaging conditions etc. when following even consider also to exist, therefore further judge whether to count Kmax2 (below the Kmax2＜Kmax1) (step S320) in set detection, improve brightness measuring frame number (step S321) when more than it, improve accuracy of detection.When Kmax2 is following,, in the scope that is not less than brightness measuring frame number initial value Fini, reduce brightness measuring frame number (step S322) in order to reduce power consumption.
When being in the record, judge to detect number K whether the set detection in ROM count (step S312) more than the Kmax1, when more than it, on image displaying part 3103, show alert message with certain hour, and write down (step S313) overlappingly by recording portion 3102 and photographic images.Then, user's individual purpose and force end record (step S314) no matter, control part 3106 deletion records record data (step S315).
By showing alert message, can make User Recognition because of detecting the behavior of taking on the sly the record that is through with.In addition, although why deleted document image but still alert message recorded photographic images, be because also can significantly reduce the value of document image when so pulling up recording medium such as tape, CD, also can make the behavior of taking on the sly lose meaning medium that can't moment deletion record image in moment.
Count Kmax1, Kmax2 in this explanation frame number Rmax, set detection.Take on the sly at short notice when detecting, because the external disturbance such as brightness variation of the image of film might produce mistake and survey.Therefore the possibility of this external disturbance long-time continuous is minimum, if set between to a certain degree detection period, can prevent that then mistake from surveying.On the contrary, take on the sly between detection period in, can carry out film shooting, long more possibility of being taken on the sly is big more between detection period.
Therefore, be preferably set to a few minutes～tens minute between detection period.When being 10 minutes between detection period, set frame number Rmax is 24000 (40 frame/second * 60 second * 10 minutes).
In present embodiment 3, during 5 brightness measurings, carry out the detection of taking on the sly for 1 time, so the detection number of times between detection period is 4800 times (Rmax ÷ 5).In this detects number of times, for example when half (Kmax1=2400 time) detects value more than the Ylim, be judged as film and take on the sly.In this detected number of times, when for example detecting 2 one-tenth (Kmax2=960 times) value more than Ylim, film may appear in judgement took on the sly, carries out the judgement of brightness measuring frame number.
Among this external embodiment 3, be to be illustrated for 24 frame/seconds with film, but the film frame number is not limited thereto.And detect the behavior of taking on the sly by the mean flow rate that compares between two test periods, but mean flow rate relatively is not limited to two, also can calculates by a plurality of mean flow rates.
Further, be that example is illustrated always to carry out brightness measuring continuously, also can be not limited thereto, carry out discontinuously as shown in Figure 25.
1～3 pair of the foregoing description detected, suppressed the behavior of taking on the sly that film shows in camera head embodiment is illustrated, and in following replay device, and the embodiment of the playback that stops the image of taking on the sly that film shows is described.
(embodiment 4)
Explanation is applicable to the topology example of the replay device 400 of embodiment 4 with reference to Figure 26.Playback portion 401 reading and recording are carried out playbacks such as error correction, D/A conversion and are handled at the signal of video signal of recording mediums such as tape, HDD, disk, memory, CD, output in the external monitor (image displaying part) 407.
Field mean flow rate calculating part 402 calculates 1 mean flow rate of the reproduced picture after handling of being reset in playback portion 401.Warning sending part 404 provides alert message detecting film when taking on the sly to playback portion 401, by playback portion 401 alert message and image is outputed to external monitor 407 simultaneously.
The same with embodiment 1, that ROM 405 storages are used to detect both fixed numbers.Use working region when RAM 406 conducts are calculated.
(embodiment 5)
Explanation is applicable to the structure example of the replay device 500 of embodiment 5 with reference to Figure 27.Playback portion 501 reading and recording are carried out playbacks such as error correction, D/A conversion and are handled at the signal of video signal of recording mediums such as tape, HDD, disk, memory, CD, output in the external monitor (image displaying part) 507.
Mean flow rate calculating part 502 will be in playback portion 501 be reset 1 of reproduced picture after handling be divided into during Ts1, during Ts2, computing interval Ts1, during Ts2 mean flow rate separately.Warning sending part 504 provides alert message detecting film when taking on the sly to playback portion 501, by playback portion 501 alert message and image is outputed to external monitor 507 simultaneously.
Control part 503 according to Ts1 during calculating by mean flow rate calculating part 502, during the Ts2 mean flow rate, whether the signal of video signal that detects playback is taking on the sly of film.The structure that the detection use that film in the control part 503 is taken on the sly and the foregoing description 2 are identical.This embodiment 5 is replay devices, therefore during Ts1, during Ts2 cut apart the processing that only is used to measure brightness, the playback signal of video signal is regardless of cedes territory to output to external monitor 507.
The same with embodiment 2, that ROM 505 storages are used to detect both fixed numbers.Use working region when RAM 506 conducts are calculated.
Control part 503 according to Ts1 during calculating by mean flow rate calculating part 502, during the Ts2 mean flow rate signal of video signal that detects playback when being taking on the sly of film, provide alert message by warning sending part 504 to playback portion 501, alert message and image are outputed to external monitor 507 simultaneously.And control part 503 irrespectively forces to stop the playback of playback portion 501 with user intent when showing alert message.By showing alert message, can make User Recognition stop playback because of detecting the behavior of taking on the sly.
Claims (10)
1. camera head is characterized in that having:
Image pickup part carries out light-to-current inversion by imaging apparatus to the shooting light that enters, and is transformed to signal of video signal;
Recording portion writes down above-mentioned signal of video signal;
Image displaying part shows above-mentioned signal of video signal;
Mean flow rate calculating part calculates 1 mean flow rate of above-mentioned signal of video signal;
Test section, in the scheduled period of above-mentioned signal of video signal, calculate the maximum of above-mentioned 1 mean flow rate and the ratio of minimum value, whether by detecting above-mentioned ratio whether more than the threshold value of determining in advance, detecting above-mentioned signal of video signal is the signal of video signal of having taken the motion-picture projection image; With
The warning sending part when above-mentioned test section detects when being the signal of video signal of having taken the motion-picture projection image, sends to above-mentioned image displaying part with alert message.
2. camera head is characterized in that having:
Image pickup part carries out light-to-current inversion by imaging apparatus to the shooting light that enters, and is transformed to signal of video signal;
Recording portion writes down above-mentioned signal of video signal;
Image displaying part shows above-mentioned signal of video signal;
The mean flow rate calculating part, 1 of above-mentioned signal of video signal is divided into the 1st during and the 2nd during, calculate during the above-mentioned the 1st and separately mean flow rate during the above-mentioned the 2nd;
Test section, in the scheduled period of above-mentioned signal of video signal, according to each above-mentioned 1, calculate during the above-mentioned the 1st and the maximum of the mean flow rate during the above-mentioned the 2nd and the ratio of minimum value, whether by detecting above-mentioned ratio whether more than the threshold value of determining in advance, detecting above-mentioned signal of video signal is the signal of video signal of having taken the motion-picture projection image; With
The warning sending part when above-mentioned test section detects when being the signal of video signal of having taken the motion-picture projection image, sends to above-mentioned image displaying part with alert message.
3. camera head is characterized in that having:
Image pickup part carries out light-to-current inversion by imaging apparatus to the shooting light that enters, and is transformed to signal of video signal;
Recording portion writes down above-mentioned signal of video signal;
Image displaying part shows above-mentioned signal of video signal;
Brightness measuring portion is according to the brightness of each above-mentioned shooting light of determining in advance that enters of period detecting;
The mean flow rate calculating part calculates the mean flow rate of the shooting light of being measured by above-mentioned brightness measuring portion during above-mentioned according to each;
Test section, calculate a plurality of above-mentioned during in the maximum of mean flow rate of above-mentioned shooting light and the ratio of minimum value, whether by detecting above-mentioned ratio whether more than threshold value, detecting above-mentioned signal of video signal is the signal of video signal of having taken the motion-picture projection image; With
The warning sending part when above-mentioned test section detects when being the signal of video signal of having taken the motion-picture projection image, sends to above-mentioned image displaying part with alert message.
4. according to any described camera head of claim 1 to 3, it is characterized in that, has control part, record in above-mentioned recording portion under the state of above-mentioned signal of video signal, when above-mentioned test section detects when being the signal of video signal of having taken the motion-picture projection image, control, to force to stop the record of above-mentioned recording portion.
5. according to any described camera head of claim 1 to 3, it is characterized in that when above-mentioned test section detects when being the signal of video signal of having taken the motion-picture projection image, above-mentioned recording portion is the above-mentioned alert message of overlapping record on the imaged image of record.
6. camera head according to claim 4 is characterized in that above-mentioned control part is controlled above-mentioned recording portion, to delete the signal of video signal that above-mentioned recording portion is write down till stop to write down from opening entry.
7. replay device is characterized in that having:
Playback portion, the playback signal of video signal also is provided to image displaying part;
Mean flow rate calculating part calculates 1 mean flow rate of the playback signal of video signal of being reset by above-mentioned playback portion;
Test section, in the scheduled period of above-mentioned playback signal of video signal, calculate the maximum of above-mentioned 1 mean flow rate and the ratio of minimum value, whether by detecting above-mentioned ratio whether more than the threshold value of determining in advance, detecting above-mentioned playback signal of video signal is the signal of video signal of having taken the motion-picture projection image; With
The warning sending part when above-mentioned test section detects when being the signal of video signal of having taken the motion-picture projection image, sends to above-mentioned playback portion with alert message.
8. replay device is characterized in that having:
Playback portion, the playback signal of video signal also is provided to image displaying part;
The mean flow rate calculating part during 1 of the playback signal of video signal that will reset by above-mentioned playback portion is divided into the 1st and during the 2nd, calculates during the above-mentioned the 1st and separately mean flow rate during the above-mentioned the 2nd;
Test section, a plurality of above-mentioned during in each above-mentioned 1 in, calculate during the above-mentioned the 1st and the maximum of the mean flow rate during the above-mentioned the 2nd and the ratio of minimum value, whether by detecting above-mentioned ratio whether more than the threshold value of determining in advance, detecting above-mentioned playback signal of video signal is the signal of video signal of having taken the motion-picture projection image; With
The warning sending part when above-mentioned test section detects when being the signal of video signal of having taken the motion-picture projection image, provides control signal from above-mentioned test section, and alert message is sent to above-mentioned playback portion.
9. replay device according to claim 8 is characterized in that, when above-mentioned test section detects when being the playback signal of video signal of having taken the motion-picture projection image, above-mentioned playback portion makes above-mentioned alert message and above-mentioned playback signal of video signal overlapping.
10. according to claim 7 or 8 described replay devices, it is characterized in that having control part, when above-mentioned test section detects when being the playback signal of video signal of having taken the motion-picture projection image, force to stop the playback of above-mentioned playback portion.
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Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015108087A1 (en) * | 2014-01-15 | 2015-07-23 | 学校法人工学院大学 | Noise imparting device and noise imparting method |
| JP2015191652A (en) * | 2014-08-18 | 2015-11-02 | Ａ・Ｔコミュニケーションズ株式会社 | Image processor, image processing method, and program |
| CN107547835A (en) * | 2016-06-27 | 2018-01-05 | 刘杰杰 | Big data management system |
| CN105868747B (en) * | 2016-06-27 | 2018-04-13 | 厦门久凌创新科技有限公司 | Cloud computing system |
| CN107547852A (en) * | 2016-06-27 | 2018-01-05 | 秦艳 | A kind of big data storage system |
| CN105955058B (en) * | 2016-06-27 | 2018-10-23 | 广东优派家私集团有限公司 | Wireless intelligent house system |
| CN107257449B (en) * | 2016-06-27 | 2018-02-09 | 杨春 | A kind of remote supervision system based on cloud computing |
| CN107547851A (en) * | 2016-06-27 | 2018-01-05 | 刘杰杰 | Big data management system |
| CN106210623A (en) * | 2016-06-27 | 2016-12-07 | 石媛 | High in the clouds histogram distribution detection platform |
| CN105898246A (en) * | 2016-06-27 | 2016-08-24 | 石飞 | Smart home system |
| CN106199133A (en) * | 2016-06-27 | 2016-12-07 | 张超超 | Current sample processing platform |
| CN107547839A (en) * | 2016-06-27 | 2018-01-05 | 张华华 | Remote control table based on graphical analysis |
| CN105933676B (en) * | 2016-06-27 | 2018-05-11 | 青岛农业大学 | Remote control table based on graphical analysis |
| CN106127158A (en) * | 2016-06-27 | 2016-11-16 | 张超超 | Alternating current voltage sampling conditioning system |
| CN106203258A (en) * | 2016-06-27 | 2016-12-07 | 秦霞 | Laser pen Automated condtrol platform |
| CN106855752A (en) * | 2016-06-27 | 2017-06-16 | 秦霞 | Laser pen Automated condtrol platform |
| CN106131484B (en) * | 2016-06-27 | 2018-05-11 | 清影浩泽科技（北京）有限公司 | Parallel image binary processing system |
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