CN103260047A - Method and device for detecting dual-path video circuit signal synchronization - Google Patents
Method and device for detecting dual-path video circuit signal synchronization Download PDFInfo
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Abstract
The invention discloses a method and device for detecting dual-path video circuit signal synchronization. The method for detecting the dual-path video circuit signal synchronization comprises the steps that main-path video signals and standby-path video signals are collected in real time; main-path frames broadcast by the collected main-path video signals are processed, and first main-path frames which only display original images are obtained; standby-path frames broadcast by the collected standby-path video signals are processed, and first standby-path frames which only display the original images are obtained; whether the first main-path frames and the first standby-path frames are synchronous is compared, and a first comparing result is obtained; whether the main-path video signals and the standby-path video signals are synchronous is determined according to the first comparing result. According to the method and device for detecting the dual-path video circuit signal synchronization, the conditions of the original images and post-added images are overlapped aiming at the frames broadcast by the main-path video signals and the standby-path video signals, the first main-path frames which only display the original images and the first standby-path frames which only display the original images are compared, so that the problem that fault-tolerance performance is poor in the existing detecting technology is solved.
Description
Technical field
The present invention relates to technical field of image processing, relate in particular to a kind of method and device that detects two-way vision signal synchronism.
Background technology
At present in the television program transmission field, the common employing of TV station provides the mode of active and standby two-way vision signal simultaneously, when guaranteeing that the main road vision signal breaks down therein, can switch to road vision signal fully in time, guarantee the fail safe that program is play, for this reason, guarantee that the synchronism of this two-path video frame that signal broadcasts is extremely important.
In order to guarantee the synchronism of active and standby two-path video frame that signal broadcasts, TV station carried out synchronism relatively to this two-path video signal usually before broadcasting signal, if comparative result shows that the picture material of the frame that this two-path video signal broadcasts at synchronization is inequality, then remind the staff in time to adjust, to guarantee the synchronism of the two.Herein, the synchronism that the frame that active and standby two-path video signal is broadcasted carries out relatively is mainly and adopts the image processing method analysis relatively whether the image information of the frame that broadcasts of the active and standby two-path video signal of synchronization is identical, if identical, determines that then the two is synchronous.In fact, consider after the processing through more equipment, the active and standby two-path video signal of unavoidable appearance is situation inequality at the image that synchronization broadcasts, TV station is general to allow active and standby two-path video signal to have less error at the image that synchronization broadcasts, for example, if the image that the active and standby two-path video signal of current time broadcasts is also inequality, but the image of the current broadcast of main road vision signal be equipped with the road vision signal and close on certain image that broadcasts constantly when identical, TV station thinks that the two also is synchronous.
TV station carries out synchronism relatively to active and standby two-path video signal usually in the following way at present: gather active and standby two-path video signal in real time, and the main road frame that broadcasts of the main road vision signal that obtains described collection, with the road frame fully that the road vision signal is broadcasted that is equipped with of described collection, carry out following steps then:
Step 1, whether the image that is equipped with the road frame of the image of the main road frame of more current acquisition and current acquisition is identical, if identical, then determines current main road vision signal and to be equipped with the road vision signal synchronous, otherwise, execution in step 2;
Step 2, being equipped with in the frame of road of the predetermined quantity that is equipped with the road frame and is about to obtain of the predetermined quantity that obtains before searching, whether there is the road frame fully that has identical image with the main road frame of current acquisition, if exist, then determine current main road vision signal and be equipped with the road vision signal synchronous, otherwise, determine current main road vision signal and to be equipped with the road vision signal asynchronous, and the alarm staff needs active and standby two-path video signal is adjusted to synchronous regime; Perhaps,
In the main road frame of the main road frame of the predetermined quantity that obtains before searching and the predetermined quantity that is about to obtain, whether there is the main road frame that the road frame has identical image that is equipped with current acquisition, if exist, then determine current main road vision signal and be equipped with the road vision signal synchronous, otherwise, determine current main road vision signal and to be equipped with the road vision signal asynchronous, and the alarm staff needs active and standby two-path video signal is adjusted to synchronous regime.
In general, TV programme all has a raw video signal, the image (hereinafter to be referred as original image) of the frame correspondence that this raw video signal broadcasts can not change because of the variation of TV station, when active and standby two-path video signal all is raw video signal, and when the frame that broadcasts is original image, adopt above synchronism comparative approach can obtain comparative result preferably, yet the needs based on TV station's business, the raw video signal of present most of TV programme will passed through the processing of a lot of equipment toward contact before really broadcasting, overlapping text on original image for example, station symbol, image informations such as advertisement (adding image hereinafter to be referred as the back), because the video player of broadcast program original image and interpolation captions, station symbol, the equipment of back interpolation image such as advertisement belongs to different equipment, guarantee back interpolation image information that the active and standby two-way original image with identical image information is superposeed also identical then be suitable difficulty, so after a plurality of device processes of process, the frame that active and standby two-path video signal broadcasts (image of demonstration is that the image that image is superimposed is added in original image and back) majority is that image information is inconsistent, when re-using above-mentioned synchronism comparative approach so active and standby two-path video signal being compared, will be usually owing to search frequent warning the less than the frame with identical image information (hereinafter to be referred as synchronization frame), that is to say the method for the active and standby two-path video signal of the detection synchronism that present TV station adopts, to showing that original image and back add the frame of image and carry out synchronism relatively the time, there is the problem of fault freedom difference.
Summary of the invention
The invention provides a kind of method and device that detects two-way vision signal synchronism, add the problem that has the fault freedom difference when frame of image carries out the synchronism comparison in order to solve prior art to showing original image and back.
The inventive method comprises:
A kind of method that detects two-way vision signal synchronism comprises:
Collection main road vision signal and road vision signal in real time fully, the main road frame that described main road vision signal is broadcasted and the described road frame that is equipped with that is equipped with road vision signal broadcast all show original image and the back interpolation image that is superimposed upon on the described original image;
The main road frame that the main road vision signal of gathering is broadcasted is handled, obtained only to show the first main road frame of original image, simultaneously, the road frame that is equipped with that the road vision signal fully of gathering is broadcasted is handled, obtain only to show that first of original image is equipped with the road frame;
Whether the more described first main road frame and described first is equipped with the road frame synchronous, obtains first comparative result;
Determine the main road vision signal and be equipped with the road vision signal whether synchronously according to described first comparative result.
A kind of device that detects two-way vision signal synchronism comprises:
Acquisition module is used for collection main road vision signal and road vision signal in real time fully, and the main road frame that described main road vision signal is broadcasted and the described road frame that is equipped with that is equipped with road vision signal broadcast all show original image and the back interpolation image that is superimposed upon on the described original image;
The first frame processing module, be used for the main road frame that the main road vision signal of gathering is broadcasted is handled, obtain only to show the first main road frame of original image, simultaneously, the road frame of gathering that is equipped with that is equipped with road vision signal broadcast is handled, obtained only to show that first of original image is equipped with the road frame;
First comparison module, whether the road frame is synchronous fully to be used for the more described first main road frame and described first, obtains first comparative result;
Whether object module is used for determining the main road vision signal and be equipped with the road vision signal synchronous according to described first comparative result.
Beneficial effect of the present invention is as follows:
The method and apparatus of detection two-way vision signal synchronism provided by the invention, the frame that broadcasts at active and standby two-path video signal is the situation of original image with back interpolation image that superposeed, at first the frame that the two-path video signal is broadcasted is handled, then the first main road frame and first that only shows original image is equipped with the road frame and compares, this method has overcome the problem that there is the fault freedom difference in existing detection technique.
Description of drawings
Fig. 1 is a kind of method flow schematic diagram that detects two-way vision signal synchronism provided by the invention;
Fig. 2 is a kind of structure drawing of device that detects two-way vision signal synchronism provided by the invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the embodiment that the present invention is detected the method and apparatus of two-way vision signal synchronism describes in further detail.
The invention provides a kind of method that detects two-way vision signal synchronism, as shown in Figure 1, this method comprises:
Step 101 is gathered the main road vision signal in real time and is equipped with the road vision signal, and the main road frame that described main road vision signal is broadcasted and the described road frame that is equipped with that is equipped with that the road vision signal broadcasts all show original image and be superimposed upon back interpolation image on the described original image;
Step 102 is handled the main road frame that the main road vision signal of gathering is broadcasted, and obtains only to show the first main road frame of original image, simultaneously, the road frame that is equipped with that the road vision signal fully of gathering is broadcasted is handled, and obtains only to show that first of original image is equipped with the road frame;
Step 103, whether the more described first main road frame and described first is equipped with the road frame synchronous, obtains first comparative result;
Whether step 104 is determined the main road vision signal and is equipped with the road vision signal synchronous according to described first comparative result.
The frame that the inventive method is broadcasted at active and standby two-path video signal is the situation of original image with back interpolation image that superposeed, at first the frame that the two-path video signal is broadcasted is handled, then the first main road frame and first that only shows original image being equipped with the road frame compares, when this method has avoided prior art directly to contrast having superposeed original image and back to add the frame of image, often owing to search the frequent problem of reporting to the police less than synchronization frame, solved the problem of conventional detection fault freedom difference.
The vision signal of TV station is normally successive and real-time update, the main purpose of the inventive method is to gather active and standby two-path video signal in real time, whether and it is synchronous to detect described two-path video signal, and the warning that will do when being asynchronous when testing result and adjustment work that vision signal is carried out is not within the scope of the invention, specifically can be with reference to prior art, the present invention repeats no more.
The TV programme that present TV station broadcasts is generally original image and the image that image is superimposed is added in the back, the inventive method mainly compares the vision signal of this class broadcast superimposed image, wherein, described original image is the image information that the raw video signal of TV programme broadcasts, the image information that image is the back stack on the original image of TV programme of each TV station is added in the back, as captions, station symbol, advertisement etc., so, original image generally can not change because of the change of TV station, then adds image and then generally can change because of the change of TV station.
The inventive method is at first extracted the original image in the frame that active and standby two-path video signal broadcasts, then the first main road frame and first that only shows original image being equipped with the road frame compares, and judge according to first comparative result that obtains whether active and standby two-path video signal is synchronous, this is because when image is added in superposeed in the frame that vision signal is broadcasted original image and back, picture material at each frame, human eye is often mainly paid close attention to original image, but not image is added in the back, therefore, the inventive method can compare on the basis of the back interpolation image of ignoring each frame, thereby so just can evade owing to the back interpolation image that superposeed causes finding the situation that the synchronization frame with identical image information causes frequent warning.
In order further to improve the testing accuracy of the inventive method, preferred, the inventive method also comprises:
Steps A 1, the main road frame that the main road vision signal of gathering is broadcasted is handled, obtained the second main road frame that image is added in a demonstration back, simultaneously, the road frame of gathering that is equipped with that is equipped with road vision signal broadcast is handled, added second of image after obtaining only to show and be equipped with the road frame;
Steps A 2, whether the more described second main road frame and described second is equipped with the road frame synchronous, obtains second comparative result;
Then definite main road vision signal with whether the road vision signal is synchronous fully comprises:
Whether steps A 3 according to described first comparative result and described second comparative result, is determined the main road vision signal and is equipped with the road vision signal synchronous.
Concrete, above-mentioned steps A1, A2, A3 is on the basis of the original image that has contrasted active and standby two-path video frame that signal broadcasts, also contrasted the back interpolation image of the frame that active and standby two-path video signal broadcasts, then on the basis of described first comparative result, in conjunction with second comparative result, judge whether active and standby two-path video signal is synchronous, owing to increased the detection of the back being added image synchronization, this method is compared with method shown in Figure 1 has higher accuracy of detection, in addition, because no longer ignore the back interpolation image in each frame when synchronism detects, this method can also detect the back interpolation image that whether successfully superposeed in the described original image.
And, preferred, according to described first comparative result and described second comparative result, determine the main road vision signal and be equipped with the road vision signal whether synchronously among the above-mentioned steps A3, specifically comprise:
Determine described first comparative result for synchronously, and described second comparative result is when also be synchronous, determines the main road vision signal and the road vision signal is synchronous fully.
Concrete, it is synchronous to have only the original image and described first that shows when the described first main road frame to be equipped with the original image of road frame demonstration, and the back interpolation image that the described second main road frame shows and described second is equipped with back interpolation image that the road frame shows when also synchronous, determine that just active and standby two-path video signal is synchronous, otherwise, just determine that active and standby two-path video signal is asynchronous.
Preferably, whether the road frame is synchronous fully for the more described first main road frame and described first in the above-mentioned steps 103, obtains first comparative result, specifically comprises:
Whether the original image that the first main road frame of more current acquisition shows is identical with the original image that first of current acquisition is equipped with road frame demonstration, if determine that then described first comparative result is synchronous; Otherwise,
The M that obtains before searching individual first is equipped with the road frame and is equipped with in the frame of road with the M individual first that is about to obtain, whether exist with the first main road frame of current acquisition and show that first of identical original image is equipped with the road frame, perhaps, search in M the first main road frame of the individual first main road frame of the M that obtains before and acquisition soon, whether exist with first of current acquisition and be equipped with the first main road frame that the road frame shows identical original image, if determine that then described first comparative result is synchronous; Otherwise, determine that described first comparative result is asynchronous, wherein, M is positive integer.
Concrete, when the synchronism of carrying out active and standby two-path video signal detects, if first of the road vision signal correspondence that is equipped with of the first main road frame of the main road vision signal correspondence of current collection and current collection is equipped with the road frame, the two shown original image is identical, can determine that then described first comparative result is for synchronously; Otherwise,
If the M of definite acquisition before first M individual first that is equipped with road frame and acquisition soon is equipped with in the frame of road, have when showing that with the first main road frame of current acquisition first of identical original image is equipped with the road frame, can determine that also described first comparative result is for synchronously, this is to allow active and standby two-path video signal to have less error at the image that synchronization broadcasts because TV station is general, be the image that broadcasts of current time main road vision signal be equipped with the road vision signal before certain moment or when certain image that broadcasts constantly is identical afterwards, TV station thinks that the two also is synchronous, in like manner, if in the individual first main road frame of M of determining M the first main road frame that obtains before and being about to obtain, have when first of current acquisition is equipped with the road frame and shows the first main road frame of identical original image, can determine that also described first comparative result is for synchronously; Otherwise,
If it is inequality that first of the original image that the first main road frame of definite current acquisition shows and current acquisition is equipped with the original image of road frame demonstration, and, the M of Huo Deing first is equipped with the road frame and the M that is about to obtain first is equipped with in the frame of road before, do not exist with the first main road frame of current acquisition and show that first of identical original image is equipped with the road frame, and, before in M the first main road frame of the individual first main road frame of the M of Huo Deing and acquisition soon, do not exist when first of current acquisition is equipped with the road frame and shows the first main road frame of identical original image, just can determine that described first comparative result is asynchronous.
Wherein, M first M individual first that is equipped with road frame and acquisition soon that searches acquisition before is equipped with in the frame of road, whether have when showing that with the first main road frame of current acquisition first of identical original image is equipped with the road frame, need to wait for the regular hour gathering vision signal on the horizon, and obtain M first and be equipped with the road frame.Herein, because TV station is meeting a period of time before broadcasting vision signal generally, just this vision signal has been carried out the synchronism detection, and this section period just can be used as and detects active and standby two-path video signal and adjust when asynchronous and handle the required crash time, so, the following M of described acquisition first is equipped with the required stand-by period of road frame and searches the required time and should not exceed the crash time that TV station reserves, in like manner, in M the first main road frame of the M that obtains before searching first a main road frame and acquisition soon, whether have when first of current acquisition is equipped with the road frame and shows the first main road frame of identical original image, obtain the required stand-by period of following M first main road frame and search the required time also not exceed the crash time that TV station reserves.
The present invention does not limit the occurrence of M, and TV station can determine the M value according to concrete performance.
Preferably, whether the road frame is synchronous fully for the more described second main road frame and described second among the above-mentioned steps A2, obtains second comparative result, specifically comprises:
Whether the back interpolation image that the second main road frame of more current acquisition shows is identical with the back interpolation image that second of current acquisition is equipped with road frame demonstration, if determine that then described second comparative result is synchronous; Otherwise,
The M that obtains before searching individual second is equipped with the road frame and is equipped with in the frame of road with the M individual second that is about to obtain, whether exist with the second main road frame of current acquisition and show that second of identical back interpolation image is equipped with the road frame, perhaps, search in M the second main road frame of the individual second main road frame of the M that obtains before and acquisition soon, whether exist with second of current acquisition and be equipped with the second main road frame that the road frame shows identical back interpolation image, if determine that then described second comparative result is synchronous; Otherwise, determine that described second comparative result is asynchronous, wherein, M is positive integer.
Concrete, the specific implementation process of implementation process and above-mentioned steps 103 is similar, repeats no more herein.
Preferably, the method for detection two-way vision signal synchronism provided by the invention also comprises:
Step B1 determines described main road frame and the template zone that is equipped with the road frame, and described template zone is described main road frame and the maximum region that is equipped with the back interpolation image of road frame demonstration;
Then above-mentioned steps 102 is specifically extracted the image beyond the template zone in the described main road frame, obtains only to show the first main road frame of original image;
Image in the described road frame fully of above-mentioned steps 102 concrete extractions beyond the template zone obtains only to show that first of original image is equipped with the road frame;
The concrete image that extracts template zone in the described main road frame of above-mentioned steps A1, and adopt Wavelet Transformation Algorithm that the image in template zone in the main road frame of described extraction is carried out edge extracting and calculate obtains only to show that the back adds second a main road frame of image;
Above-mentioned steps A1 is concrete to extract the described image that is equipped with template zone in the frame of road, and adopts Wavelet Transformation Algorithm that the image in template zone in the road frame fully of described extraction is carried out edge extracting and calculate, and adds second of image after obtaining only to show and is equipped with the road frame.
During in view of the back interpolation image of overlapping text, advertisement, station symbol etc. in the original image of TV programme, described back is added image and is had fixing viewing area usually, therefore, the maximum region that demonstration back in the frame of main road vision signal and road vision signal broadcast fully can be added image is defined as the template zone, then the image outside this template zone is original image certainly just in the frame, therefore, utilize this template zone to be implemented in easily and extract original image and back interpolation image in the frame respectively, carry out the image information contrast then.
Concrete, because described template zone is the main road frame or is equipped with the maximum region that shows interpolation image in back in the frame of road, therefore, may also can show the information of original image in the main road frame of described extraction in the image in template zone, compare in order exactly image to be added in the back, the inventive method also adopts Wavelet Transformation Algorithm that the image in the main road frame template zone of described extraction is carried out edge extracting and calculates, obtain only to show the second main road frame of back interpolation image, in like manner, after extracting the described image that is equipped with template zone in the frame of road, also adopt Wavelet Transformation Algorithm that the image in template zone in the road frame fully of described extraction is carried out edge extracting and calculate, add second of image after obtaining only to show and be equipped with the road frame.
Accordingly, the present invention also provides a kind of device that detects two-way vision signal synchronism, as shown in Figure 2, comprising:
The first frame processing module 202, be used for the main road frame that the main road vision signal of gathering is broadcasted is handled, obtain only to show the first main road frame of original image, simultaneously, the road frame of gathering that is equipped with that is equipped with road vision signal broadcast is handled, obtained only to show that first of original image is equipped with the road frame;
Whether object module 204 is used for determining the main road vision signal and be equipped with the road vision signal synchronous according to described first comparative result.
Preferably, the device of described detection two-way vision signal synchronism also comprises:
The second frame processing module 205, be used for the main road frame that the main road vision signal of collection is broadcasted is handled, add second a main road frame of image after obtaining only to show, simultaneously, the road frame of gathering that is equipped with that is equipped with road vision signal broadcast is handled, added second of image after obtaining only to show and be equipped with the road frame;
Then described object module 204 definite main road vision signals with whether the road vision signal is synchronous fully comprise:
According to described first comparative result and described second comparative result, determine the main road vision signal and be equipped with the road vision signal whether synchronously.
Whether preferably, described object module 204 is according to described first comparative result and described second comparative result, determine the main road vision signal and be equipped with the road vision signal synchronous, specifically comprises:
Determine described first comparative result for synchronously, and described second comparative result is when also be synchronous, determines the main road vision signal and the road vision signal is synchronous fully.
Preferably, whether described first comparison module, the 203 more described first main road frames and described first are equipped with the road frame synchronous, obtains first comparative result, specifically comprises:
Whether the original image that the first main road frame of more current acquisition shows is identical with the original image that first of current acquisition is equipped with road frame demonstration, if determine that then described first comparative result is synchronous; Otherwise,
The M that obtains before searching individual first is equipped with the road frame and is equipped with in the frame of road with the M individual first that is about to obtain, whether exist with the first main road frame of current acquisition and show that first of identical original image is equipped with the road frame, perhaps, search in M the first main road frame of the individual first main road frame of the M that obtains before and acquisition soon, whether exist with first of current acquisition and be equipped with the first main road frame that the road frame shows identical original image, if determine that then described first comparative result is synchronous; Otherwise, determine that described first comparative result is asynchronous, wherein, M is positive integer.
Preferably, whether described second comparison module, the 206 more described second main road frames and described second are equipped with the road frame synchronous, obtains second comparative result, specifically comprises:
Whether the back interpolation image that the second main road frame of more current acquisition shows is identical with the back interpolation image that second of current acquisition is equipped with road frame demonstration, if determine that then described second comparative result is synchronous; Otherwise,
The M that obtains before searching individual second is equipped with the road frame and is equipped with in the frame of road with the M individual second that is about to obtain, whether exist with the second main road frame of current acquisition and show that second of identical back interpolation image is equipped with the road frame, perhaps, search in M the second main road frame of the individual second main road frame of the M that obtains before and acquisition soon, whether exist with second of current acquisition and be equipped with the second main road frame that the road frame shows identical back interpolation image, if determine that then described second comparative result is synchronous; Otherwise, determine that described second comparative result is asynchronous, wherein, M is positive integer.
Preferably, the device of described detection two-way vision signal synchronism also comprises:
Then the described first frame processing module 202 is specifically extracted the image beyond the template zone in the described main road frame, obtains only to show the first main road frame of original image;
Image in the described road frame fully of the described first frame processing module, 202 concrete extractions beyond the template zone obtains only to show that first of original image is equipped with the road frame;
Concrete images that extract template zone in the described main road frame of the described second frame processing module 205, and adopt Wavelet Transformation Algorithm that the image in template zone in the main road frame of described extraction is carried out edge extracting and calculate obtain only to show that the back adds second a main road frame of image;
The described second frame processing module 205 is concrete extracts the described images that are equipped with template zone in the frame of road, and adopts Wavelet Transformation Algorithm that the image that is equipped with template zone in the frame of road of described extraction is carried out edge extracting and calculate, and obtains only to show that the back adds second of image and be equipped with the road frame.
The specific implementation function of each module does not repeat them here referring to the specific implementation process of the method for above-mentioned detection two-way vision signal synchronism in the device of described detection two-way vision signal synchronism.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.This section is the final stage of specification.
Claims (12)
1. a method that detects two-way vision signal synchronism is characterized in that, comprising:
Collection main road vision signal and road vision signal in real time fully, the main road frame that described main road vision signal is broadcasted and the described road frame that is equipped with that is equipped with road vision signal broadcast all show original image and the back interpolation image that is superimposed upon on the described original image;
The main road frame that the main road vision signal of gathering is broadcasted is handled, obtained only to show the first main road frame of original image, simultaneously, the road frame that is equipped with that the road vision signal fully of gathering is broadcasted is handled, obtain only to show that first of original image is equipped with the road frame;
Whether the more described first main road frame and described first is equipped with the road frame synchronous, obtains first comparative result;
Determine the main road vision signal and be equipped with the road vision signal whether synchronously according to described first comparative result.
2. the method for claim 1 is characterized in that, also comprises:
The main road frame that the main road vision signal of gathering is broadcasted is handled, obtained only to show that the back adds second a main road frame of image, simultaneously, the road frame of gathering that is equipped with that the road vision signal broadcasts that is equipped with is handled, obtain only to show that the back adds second of image and be equipped with the road frame;
Whether the more described second main road frame and described second is equipped with the road frame synchronous, obtains second comparative result;
Then definite main road vision signal with whether the road vision signal is synchronous fully comprises:
According to described first comparative result and described second comparative result, determine the main road vision signal and be equipped with the road vision signal whether synchronously.
3. whether method as claimed in claim 2 is characterized in that, according to described first comparative result and described second comparative result, determine the main road vision signal and be equipped with the road vision signal synchronous, specifically comprises:
Determine described first comparative result for synchronously, and described second comparative result is when also be synchronous, determines the main road vision signal and the road vision signal is synchronous fully.
4. the method for claim 1 is characterized in that, whether the more described first main road frame and described first is equipped with the road frame synchronous, obtains first comparative result, specifically comprises:
Whether the original image that the first main road frame of more current acquisition shows is identical with the original image that first of current acquisition is equipped with road frame demonstration, if determine that then described first comparative result is synchronous; Otherwise,
The M that obtains before searching individual first is equipped with the road frame and is equipped with in the frame of road with the M individual first that is about to obtain, whether exist with the first main road frame of current acquisition and show that first of identical original image is equipped with the road frame, perhaps, search in M the first main road frame of the individual first main road frame of the M that obtains before and acquisition soon, whether exist with first of current acquisition and be equipped with the first main road frame that the road frame shows identical original image, if determine that then described first comparative result is synchronous; Otherwise, determine that described first comparative result is asynchronous, wherein, M is positive integer.
5. method as claimed in claim 2 is characterized in that, whether the more described second main road frame and described second is equipped with the road frame synchronous, obtains second comparative result, specifically comprises:
Whether the back interpolation image that the second main road frame of more current acquisition shows is identical with the back interpolation image that second of current acquisition is equipped with road frame demonstration, if determine that then described second comparative result is synchronous; Otherwise,
The M that obtains before searching individual second is equipped with the road frame and is equipped with in the frame of road with the M individual second that is about to obtain, whether exist with the second main road frame of current acquisition and show that second of identical back interpolation image is equipped with the road frame, perhaps, search in M the second main road frame of the individual second main road frame of the M that obtains before and acquisition soon, whether exist with second of current acquisition and be equipped with the second main road frame that the road frame shows identical back interpolation image, if determine that then described second comparative result is synchronous; Otherwise, determine that described second comparative result is asynchronous, wherein, M is positive integer.
6. method as claimed in claim 2 is characterized in that, also comprises:
Determine described main road frame and the template zone that is equipped with the road frame, described template zone is described main road frame and is equipped with the maximum region of adding image after the road frame shows;
Then specifically extract the image beyond the template zone in the described main road frame, obtain only to show the first main road frame of original image;
Image in the described road frame fully of concrete extraction beyond the template zone obtains only to show that first of original image is equipped with the road frame;
The specifically image in template zone in the described main road frame of extraction, and employing Wavelet Transformation Algorithm carries out edge extracting calculating to the image in template zone in the main road frame of described extraction, second a main road frame of interpolation image after the acquisition demonstration;
Concrete extract the described image that is equipped with template zone in the frame of road, and adopt Wavelet Transformation Algorithm that the image that is equipped with template zone in the frame of road of described extraction is carried out edge extracting and calculate, obtain only to show that the back adds second of image and be equipped with the road frame.
7. a device that detects two-way vision signal synchronism is characterized in that, comprising:
Acquisition module is used for collection main road vision signal and road vision signal in real time fully, and the main road frame that described main road vision signal is broadcasted and the described road frame that is equipped with that is equipped with road vision signal broadcast all show original image and the back interpolation image that is superimposed upon on the described original image;
The first frame processing module, be used for the main road frame that the main road vision signal of gathering is broadcasted is handled, obtain only to show the first main road frame of original image, simultaneously, the road frame of gathering that is equipped with that is equipped with road vision signal broadcast is handled, obtained only to show that first of original image is equipped with the road frame;
First comparison module, whether the road frame is synchronous fully to be used for the more described first main road frame and described first, obtains first comparative result;
Whether object module is used for determining the main road vision signal and be equipped with the road vision signal synchronous according to described first comparative result.
8. device as claimed in claim 7 is characterized in that, also comprises:
The second frame processing module, be used for the main road frame that the main road vision signal of collection is broadcasted is handled, add second a main road frame of image after obtaining only to show, simultaneously, the road frame of gathering that is equipped with that is equipped with road vision signal broadcast is handled, added second of image after obtaining only to show and be equipped with the road frame;
Second comparison module, whether the road frame is synchronous fully to be used for the more described second main road frame and described second, obtains second comparative result;
Then whether described object module is determined the main road vision signal and is equipped with the road vision signal synchronous, comprising:
According to described first comparative result and described second comparative result, determine the main road vision signal and be equipped with the road vision signal whether synchronously.
9. whether device as claimed in claim 8 is characterized in that, described object module is according to described first comparative result and described second comparative result, determine the main road vision signal and be equipped with the road vision signal synchronous, specifically comprises:
Determine described first comparative result for synchronously, and described second comparative result is when also be synchronous, determines the main road vision signal and the road vision signal is synchronous fully.
10. device as claimed in claim 7 is characterized in that, whether the more described first main road frame of described first comparison module and described first is equipped with the road frame synchronous, obtains first comparative result, specifically comprises:
Whether the original image that the first main road frame of more current acquisition shows is identical with the original image that first of current acquisition is equipped with road frame demonstration, if determine that then described first comparative result is synchronous; Otherwise,
The M that obtains before searching individual first is equipped with the road frame and is equipped with in the frame of road with the M individual first that is about to obtain, whether exist with the first main road frame of current acquisition and show that first of identical original image is equipped with the road frame, perhaps, search in M the first main road frame of the individual first main road frame of the M that obtains before and acquisition soon, whether exist with first of current acquisition and be equipped with the first main road frame that the road frame shows identical original image, if determine that then described first comparative result is synchronous; Otherwise, determine that described first comparative result is asynchronous, wherein, M is positive integer.
11. device as claimed in claim 8 is characterized in that, whether the more described second main road frame of described second comparison module and described second is equipped with the road frame synchronous, obtains second comparative result, specifically comprises:
Whether the back interpolation image that the second main road frame of more current acquisition shows is identical with the back interpolation image that second of current acquisition is equipped with road frame demonstration, if determine that then described second comparative result is synchronous; Otherwise,
The M that obtains before searching individual second is equipped with the road frame and is equipped with in the frame of road with the M individual second that is about to obtain, whether exist with the second main road frame of current acquisition and show that second of identical back interpolation image is equipped with the road frame, perhaps, search in M the second main road frame of the individual second main road frame of the M that obtains before and acquisition soon, whether exist with second of current acquisition and be equipped with the second main road frame that the road frame shows identical back interpolation image, if determine that then described second comparative result is synchronous; Otherwise, determine that described second comparative result is asynchronous, wherein, M is positive integer.
12. device as claimed in claim 8 is characterized in that, also comprises:
The template regions module is used for definite described main road frame and the template zone that is equipped with the road frame, and described template zone is described main road frame and the maximum region that is equipped with the back interpolation image of road frame demonstration;
Then the described first frame processing module is specifically extracted the image beyond the template zone in the described main road frame, obtains only to show the first main road frame of original image;
Image in the described road frame fully of the concrete extraction of the described first frame processing module beyond the template zone obtains only to show that first of original image is equipped with the road frame;
The concrete image that extracts template zone in the described main road frame of the described second frame processing module, and adopt Wavelet Transformation Algorithm that the image in template zone in the main road frame of described extraction is carried out edge extracting and calculate obtains only to show that the back adds second a main road frame of image;
The described second frame processing module is concrete extracts the described image that is equipped with template zone in the frame of road, and adopts Wavelet Transformation Algorithm that the image in template zone in the road frame fully of described extraction is carried out edge extracting and calculate, and adds second of image after obtaining only to show and is equipped with the road frame.
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