CN110213457A - A kind of image transfer method and device - Google Patents
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- CN110213457A CN110213457A CN201910483949.4A CN201910483949A CN110213457A CN 110213457 A CN110213457 A CN 110213457A CN 201910483949 A CN201910483949 A CN 201910483949A CN 110213457 A CN110213457 A CN 110213457A
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- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
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- G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
- G06T3/4007—Scaling of whole images or parts thereof, e.g. expanding or contracting based on interpolation, e.g. bilinear interpolation
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Abstract
The application provides a kind of image transfer method and device, and this method is for improving existing image transmitting mechanism, this method comprises: calculating the character string of the first image of acquisition, obtains the first character string；The difference for comparing the first character string Yu multiple second character strings obtains multiple difference values, and multiple second character strings are the character string for calculating multiple second images and obtaining, and multiple second images are the multiple images acquired before the acquisition time of the first image；If multiple difference values are respectively less than preset threshold, and the difference of the transmission time of the acquisition time of the first image and the last image is greater than or equal to preset time period, then by the first image transmitting to server.During above-mentioned realization, determine to change image transmitting by two dimensions of the difference value and time between picture, the case where effectively long-term image is not sent.
Description
Technical field
This application involves the technical fields of image analysis, in particular to a kind of image transfer method and device.
Background technique
Currently, the image of fixed thermal infrared imager acquisition needs returned data center to process, traditional method is, Gu
Fixed pattern thermal infrared imager acquires in real time and stores image, then compares to the adjacent two field pictures in storage, if adjacent two
The difference value of frame image is greater than threshold value, then transmits the image acquired in real time；Conversely, if the difference value of adjacent two field pictures
No more than threshold value, then the image acquired in real time is not transmitted.
Summary of the invention
The embodiment of the present application is designed to provide a kind of image transfer method and device, passes for improving existing image
Defeated mechanism.
The embodiment of the present application provides a kind of image transfer method, comprising: the character string for calculating the first image of acquisition obtains
Obtain the first character string；The difference for comparing first character string Yu the multiple second character string obtains multiple difference values, described
Multiple second character strings are the character string for calculating multiple second images and obtaining, and the multiple second image is in the first image
Acquisition time before acquire multiple images；If the multiple difference value is respectively less than preset threshold, and the first image
The difference of the transmission time of acquisition time and the last image is greater than or equal to preset time period, then passes the first image
Transport to server.During above-mentioned realization, determine to change plan by two dimensions of the difference value and time between picture
As transmission, the case where long-term image is not sent is efficiently avoided.
Optionally, in the embodiment of the present application, in first character string and the multiple second character string
Difference, after obtaining multiple difference values, further includes: if the multiple difference value is respectively less than preset threshold, and first figure
The difference of the transmission time of the acquisition time of picture and the last image is less than preset time period, then stops the first image
Transmission.During above-mentioned realization, stop the transmission of image by two dimensions of the difference value and time between picture,
To prevent unnecessary image transmitting, network bandwidth is wasted during effectively improving thermal infrared imager transmission image
The problem of resource.
Optionally, in the embodiment of the present application, in first character string and the multiple second character string
Difference, after obtaining multiple difference values, further includes: if any difference value in the multiple difference value be greater than or equal to it is described
The first image is then transmitted to server by preset threshold.During above-mentioned realization, pass through the difference value between picture
It determines to change image transmitting, ensure that the efficiency that discrepant image just transmits.
Optionally, in the embodiment of the present application, the character string of first image for calculating acquisition, comprising: by described the
One image zooms in and out and gray proces, obtains the first grayscale image, first grayscale image includes the corresponding ash of multiple pixels
Angle value；The average value of the corresponding gray value of the multiple pixel is calculated, the first average value is obtained；By first average value with
The corresponding gray value of each pixel in the multiple pixel compares, and obtains character string.During above-mentioned realization, lead to
The character string for calculating picture is crossed, which is used to obtain the difference value of picture, effectively improves and picture is compared and is obtained
The efficiency for obtaining difference value, to ensure that the efficiency that discrepant image just transmits.
Optionally, in the embodiment of the present application, described to zoom in and out the first image and gray proces, obtain first
Grayscale image, comprising: the first image is zoomed in and out to pre-set dimension, the second image is obtained；Using maximum value process or averagely
Second image is carried out gray proces by value method, obtains the first grayscale image.During above-mentioned realization, carried out by picture
Scaling and gray proces, effectively improve the treatment effeciency to picture, to ensure that the effect that discrepant image just transmits
Rate.
Optionally, in the embodiment of the present application, the average value for calculating the corresponding gray value of the multiple pixel, is obtained
Obtain the first average value, comprising: according toThe average value of the corresponding gray value of the multiple pixel is calculated, is obtained
First average value；Wherein,For first average value, i is the ith pixel point in the multiple pixel, xiIt is described more
The corresponding gray value of ith pixel point in a pixel, n are the number of the multiple pixel.In above-mentioned realization process
In, gray proces are carried out by picture, effectively improve the treatment effeciency to picture, to ensure that discrepant image
The efficiency of transmission.
Optionally, in the embodiment of the present application, described by each of first average value and the multiple pixel
The corresponding gray value of pixel compares, and obtains character string, comprising: if first average value is less than or equal to the multiple pixel
The corresponding gray value of each pixel in point, then be denoted as one for comparison result；If first average value is greater than the multiple
The corresponding gray value of each pixel in pixel, then be denoted as zero for the comparison result；The comparison result is successively connected
The character string obtained is determined as character string.During above-mentioned realization, by calculating the character string of picture, by the character string
For obtaining the difference value of picture, the efficiency for comparing picture and obtaining difference value is effectively improved, to ensure that difference
The efficiency that different image just transmits.
Optionally, in the embodiment of the present application, first character string and the multiple second character string
Difference obtains multiple difference values, comprising: by the second character string of each of the multiple second character string and first character
String does XOR operation, obtains multiple third character strings；By the numerical value in third character string each in the multiple third character string
It is cumulative, obtain multiple difference values.During above-mentioned realization, by calculating the character string of picture, which is used to obtain
The difference value for obtaining picture, effectively improves the efficiency for comparing picture and obtaining difference value, to ensure that discrepant figure
As the efficiency of just transmission.
The embodiment of the present application also provides a kind of image transmissions, comprising: first obtains module, for calculating acquisition
The character string of first image obtains the first character string；First comparison module is used for first character string and multiple second
The difference of character string obtains multiple difference values, and the multiple second character string is the character string for calculating multiple second images and obtaining,
The multiple second image is the multiple images acquired before the acquisition time of the first image；First transmission module is used
If being respectively less than preset threshold, and the transmission of the acquisition time of the first image and the last image in the multiple difference value
The difference of time is greater than or equal to preset time period, then the first image is transmitted to server.
Optionally, in the embodiment of the present application, further includes: first stops module, if small for the multiple difference value
It is less than preset time in the difference of preset threshold, and the transmission time of the acquisition time of the first image and the last image
Section, then stop the transmission of the first image.
Optionally, in the embodiment of the present application, further includes: the second transmission module, if in the multiple difference value
Any difference value is greater than or equal to the preset threshold, then the first image is transmitted to server.
Optionally, in the embodiment of the present application, the first acquisition module includes: the second acquisition module, and being used for will be described
First image zooms in and out and gray proces, obtains the first grayscale image, first grayscale image includes that multiple pixels are corresponding
Gray value；Third obtains module, and for calculating the average value of the corresponding gray value of the multiple pixel, it is average to obtain first
Value；4th obtains module, for by first average value gray scale corresponding with each pixel in the multiple pixel
Value compares, and obtains character string.
Optionally, in the embodiment of the present application, the second acquisition module includes: image scaling module, and being used for will be described
First image is zoomed in and out to pre-set dimension, obtains the second image；Gradation processing module, for using maximum value process or average value
Second image is carried out gray proces by method, obtains the first grayscale image.
Optionally, in the embodiment of the present application, it includes: that average value obtains module that the third, which obtains module, is used for basisThe average value of the corresponding gray value of the multiple pixel is calculated, the first average value is obtained；Wherein,It is described
First average value, i are the ith pixel point in the multiple pixel, xiFor the ith pixel point in the multiple pixel
Corresponding gray value, n are the number of the multiple pixel.
Optionally, in the embodiment of the present application, the 4th acquisition module includes: the first object module, if for described
First average value is less than or equal to the corresponding gray value of each pixel in the multiple pixel, then is denoted as comparison result
One；Second object module, if being greater than the corresponding ash of each pixel in the multiple pixel for first average value
The comparison result is then denoted as zero by angle value；Connection result module, for the comparison result to be sequentially connected to the character of acquisition
String is determined as character string.
Optionally, in the embodiment of the present application, first comparison module includes: the 5th acquisition module, and being used for will be described
The second character string of each of multiple second character strings and first character string do XOR operation, obtain multiple third characters
String；6th obtains module, for the numerical value in third character string each in the multiple third character string to add up, obtains multiple
Difference value.
The embodiment of the present application also provides a kind of electronic equipment, comprising: processor and memory, the memory are stored with
The processor executable machine readable instructions execute as described above when the machine readable instructions are executed by the processor
Method.
The embodiment of the present application also provides a kind of storage medium, it is stored with computer program on the storage medium, the calculating
Machine program executes method as described above when being run by processor.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application will make below to required in the embodiment of the present application
Attached drawing is briefly described, it should be understood that the following drawings illustrates only some embodiments of the application, therefore should not be seen
Work is the restriction to range, for those of ordinary skill in the art, without creative efforts, can be with
Other relevant attached drawings are obtained according to these attached drawings.
Fig. 1 shows the structural schematic diagram of electronic equipment provided by the embodiments of the present application；
Fig. 2 shows image transfer method flow diagrams provided by the embodiments of the present application；
Fig. 3 shows Hash value calculating method flow diagram provided by the embodiments of the present application；
Fig. 4 shows image transmission structural schematic diagram provided by the embodiments of the present application.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Whole description.
Referring to Figure 1, Fig. 1 shows the structural schematic diagram of electronic equipment provided by the embodiments of the present application.The application is implemented
The a kind of electronic equipment 101 that example provides, comprising: processor 102 and memory 103, memory 103 is stored with processor 102 can
The machine readable instructions of execution, machine readable instructions execute following method when being executed by processor 102.
Referring to Figure 1, the embodiment of the present application also provides a kind of storage medium 104, meter is stored on the storage medium 104
Calculation machine program, the computer program execute following method when being run by processor 102.
Wherein, storage medium 104 can be by any kind of volatibility or non-volatile memory device or their group
It closes and realizes, such as static random access memory (Static Random Access Memory, abbreviation SRAM), electric erasable can
Program read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as
EEPROM), Erasable Programmable Read Only Memory EPROM (Erasable Programmable Read Only Memory, abbreviation
EPROM), programmable read only memory (Programmable Red-Only Memory, abbreviation PROM), read-only memory
(Read-Only Memory, abbreviation ROM), magnetic memory, flash memory, disk or CD.
In existing fixed thermal infrared imager, it can acquire in real time and store image, then to adjacent two in storage
Frame image compares, if the difference value of adjacent two field pictures is greater than threshold value, the image acquired in real time is transmitted；Instead
It does not transmit the image acquired in real time if the difference value of adjacent two field pictures is not more than threshold value.Certainly in a practical situation,
Here the difference value of adjacent two field pictures, it is also possible to the difference value of adjacent multiple image.
For one in detail example be illustrated, it is understood that there may be a kind of situation for example: if the number of multiple difference values is
4, the difference value of three adjacent images is respectively less than preset threshold, specifically, for ease of description, below carries out image successively
Number, one shares the image of 10 numbers, and the respective number of the image of this 10 numbers is respectively from 1 to 10；Difference value is small
In preset threshold number for example, 1,2 and 3,2,3 and 4, and so on, 8,9 and 10 difference value again smaller than preset threshold, but
It is that the image that number is 1 and the image difference value that number is 10 have been over preset threshold.If being only to be from image difference value
The no condition greater than preset threshold judges whether the image transmits, then the image that number is 1 to 10 will not be sent, at this time
The case where not sent there have been long-term image.
First embodiment
Fig. 2 shows image transfer method flow diagram provided by the embodiments of the present application, this method can be adopted by image
Acquisition means execute, the image collecting device for example: thermal infrared imager, monitor camera, camera or terminal with camera etc.,
Terminal with camera is for example: mobile phone, tablet computer or notebook etc..This method can also be in image collecting device by acquisition
Image transmitting is given with after the terminal (claiming device end below) for executing computer program functional, is executed here by device end
Method, device end for example: PC, the network switch, network router or host desktop etc..Certainly, specific real
During applying, image collecting device can be with device end and be connected by high-speed transfer route, high-speed transfer route here
Image data can be quickly transmitted, high-speed transfer route here includes but is not limited to: optical fiber, serial ports, parallel bus or logical
With universal serial bus etc..
The application scenarios of the image transfer method include but is not limited to high-frequency acquisition image, and need to send an image to
The scene that server is handled, these scenes for example: common Video security monitoring and high resolution image data acquisition etc.
Deng.
It is above-mentioned Fig. 2 shows image transfer method may include steps of:
Step S100: calculating the character string of the first image of acquisition, obtains the first character string.
Wherein, the acquisition of the first image and processing method can have several situations, the first situation, the first image can be
It is handled by above-mentioned image acquisition device, and by the image collecting device；Second situation, the first image are by image
Acquisition device acquisition, then the first image is sent to above-mentioned device end by the image collecting device, then by equipment end
End handles the first image.
It is understood that the first image here can refer to infrared figure made of the intensity for obtaining object infrared light
Picture is also possible to obtain the multichannel image or single channel image of the intensity of object visible light；First image for example can be
The image that resolution ratio by infrared thermoviewer acquisition is 640*480.
The character string of image can refer to that the cryptographic Hash that processing acquisition is carried out to image, cryptographic Hash here are understood that
For the fingerprint or mark of the image, cryptographic Hash here is used to obtain the difference value or similarity of multiple images, will pass through figure
The difference value or similarity of picture judges whether image sends, the specific method for calculating the first character string, can be using average
Hash value algorithms (also known as mean value hash algorithm) or perceptual hash value-based algorithm, specific calculating process will carry out in detail below
Ground description.
In some embodiments in the embodiment of the present application, step S100 may include:
Step S110: the first image is zoomed in and out and gray proces, the first grayscale image of acquisition, the first grayscale image include more
The corresponding gray value of a pixel.
Processing is zoomed in and out to image, part details will be removed to retain the structure of image by referring to, so that image
Size becomes unified size, and size here refers to the height and width of image；Remove the mode of part details for example: removal is in length and breadth
The difference of ratio, or zoomed in and out using interpolation value method according to aspect ratio etc., specific interpolation value method for example: bicubic is inserted
The methods of value, arest neighbors interpolation and bilinear interpolation.
Gray proces refer to the process of and convert gray level image for color image；For example, working as R=G=in RGB model
When B, then colour indicates a kind of greyscale color, and wherein the value of R=G=B is gray value, and therefore, each pixel of gray level image only needs
One byte stores gray value (also known as intensity value, brightness value), tonal range 0-255.It in the specific implementation process, can be with
Gray processing is carried out to color image using four kinds of methods such as component method, maximum value process, mean value method and weighted mean method, in order to just
In understanding, will be illustrated in following example with maximum value process and mean value method.
In some embodiments in the embodiment of the present application, step S110 may include:
Step S111: the first image is zoomed in and out to pre-set dimension, the second image is obtained.
Wherein, pre-set dimension here can refer to a height of preset height of image, and the width of image is preset width, example
Such as, the size of image is 32*24, wherein 32 pixels are the width of image, and 24 pixels are the height of image.By the first figure
Can be as zooming in and out to one of embodiment of pre-set dimension, by the picture size of the first image scaling to 32*24,
Using the image of 32*24 size as the second image.
Step S112: the second image is subjected to gray proces using maximum value process or mean value method, obtains the first grayscale image.
In some embodiments of the embodiment of the present application, indicated using the formula of maximum value process are as follows: Gray (i, j)=max
Second image is carried out gray proces by { R (i, j), G (i, j), B (i, j) }, obtains the first grayscale image；Or use mean value method
Formula be expressed asSecond image is subjected to gray proces, obtains the first gray scale
Figure；
Wherein, Gray (i, j) is the gray value of the i-th row jth column of the first grayscale image, and R (i, j) is the i-th of the second image
The first passage value of row jth column, G (i, j) are the second channel value that the i-th row jth of the second image arranges, and B (i, j) is the second image
The i-th row jth column third channel value, max indicates to obtain maximum value.
Step S120: calculating the average value of the corresponding gray value of multiple pixels, obtains the first average value.
It in a particular embodiment, can basisCalculate the flat of the corresponding gray value of multiple pixels
Mean value obtains the first average value；
Wherein,For the first average value, i is the ith pixel point in multiple pixels, xiFor i-th in multiple pixels
The corresponding gray value of a pixel, n are the number of multiple pixels.
Step S130: it by the first average value compared with the corresponding gray value of each pixel in multiple pixels, obtains
Character string.
As described above, character string here can refer to the cryptographic Hash that processing acquisition is carried out to image, Kazakhstan here
Uncommon value can be understood as the fingerprint or mark of the image, and cryptographic Hash here is used to obtain the difference value or similar of multiple images
Degree, judges whether image sends will pass through difference value or the similarity of image, the specific preparation method of character string here
It is described as follows.
Fig. 3 is referred to, Fig. 3 shows Hash value calculating method flow diagram provided by the embodiments of the present application.Wherein, exist
In some embodiments in the embodiment of the present application, step S130 can (also known as mean value Hash be calculated using average hash value algorithms
Method) or perceptual hash value-based algorithm realize that be here described by taking average hash value algorithms as an example, this method includes following step
It is rapid:
Step S131: if the first average value is less than or equal to the corresponding gray value of each pixel in multiple pixels,
Comparison result is then denoted as one.
Wherein, the specific implementation of the above method is for example: the first average value is 200, first pixel pair therein
The gray value answered is 100, then the postscript that compares is 1；The corresponding gray value of third pixel therein is 100, then compares
Postscript is 1；The 4th corresponding gray value of pixel therein is 100, then the postscript that compares is 1.
Step S132: if the first average value is greater than the corresponding gray value of each pixel in multiple pixels, will compare
Relatively result is denoted as zero.
Wherein, the specific implementation of the above method is for example: the first average value is 200, second pixel point pair therein
The gray value answered is 300, then the postscript that compares is 0；The 5th corresponding gray value of pixel therein is 300, then compares
Postscript is 0；The 6th corresponding gray value of pixel therein is 300, then the postscript that compares is 0.
Step S133: the character string that comparison result is sequentially connected acquisition is determined as character string.
Continuation is illustrated with above example, and the character string that comparison result is sequentially connected acquisition is determined as character string then
Be 101100, then 101100 be exactly the first image character string or cryptographic Hash.
In some embodiments in the embodiment of the present application, this method be may is that the gray value of each pixel, with
One average value is compared.If the gray value of the pixel is greater than or equal to average value, it is denoted as 1；If the gray value of the pixel
Less than average value, it is denoted as 0.It by above-mentioned comparison result, combines, just constitutes one 768 and be made of numerical value 0 or 1
Character string, here it is the character string of this picture or cryptographic Hash.
Step S200: compare the difference of the first character string Yu multiple second character strings, obtain multiple difference values.
Wherein, multiple second character strings are the character string for calculating multiple second images and obtaining, and multiple second images are the
The multiple images acquired before the acquisition time of one image.It is understood that the first above-mentioned image is after acquisition, by image
Acquisition device or device end storage just obtain here when storing the first image of multiple and different time point acquisitions
Multiple images.Here multiple images can refer to what above-mentioned image collecting device acquired before the acquisition time of the first image
Multiple images may also mean that the multiple images that above equipment terminal accesses before accessing the first image.Certainly specific
In implementation process, the first above-mentioned image and multiple images can be numbered, can be numbered sequentially in time, it can also be with
It is numbered using timestamp, such as: each frame image of acquisition is numbered, and includes date and serial number；The form of number
It can be " chronological order number ", such as: 201905081234567.
It is to be understood that calculating the concrete modes of multiple second character strings and above-mentioned here according to multiple second images
The mode for calculating the first character string according to the first image is identical, and therefore, the acquisition process of multiple second character strings may refer to here
Above-mentioned step S110 is to step S130, and details are not described herein.Here compare the difference of the first character string Yu multiple second character strings
Different concrete mode will be specifically described below:
In one of embodiment in the embodiment of the present application, the first character string of comparison in step S200 with it is multiple
The differences method of second character string may include steps of:
Step S210: the second character string of each of multiple second character strings and the first character string are done into XOR operation, obtained
Obtain multiple third character strings.
Wherein, the second character string of each of multiple second character strings and the first character string are done to the specific side of XOR operation
Formula can be, and second character string and first character string be done XOR operation, all pixels position in the above results that add up
For 1 number, this numerical value, also referred to as Hamming distance are exported.
Step S220: the numerical value in third character string each in multiple third character strings is added up, multiple difference values are obtained.
As above, the number that all pixels position is 1 in the above results that add up exports this numerical value, also referred to as Hamming distance.
Numerical value in third character string each in multiple third character strings is added up, multiple difference values can be obtained.
Step S300: if multiple difference values are respectively less than preset threshold, and the acquisition time of the first image and the last figure
The difference of the transmission time of picture is greater than or equal to preset time period, then by the first image transmitting to server.
Wherein, it is above-mentioned judge image whether one of embodiment of transmission method can be with are as follows: if multiple difference values
Number is 4, and the number of the first image is 201905081234571, and the number that previous frame sends picture is
201905081234567, then difference is 4, and the difference of the number of the first image and the transmission number of the last image is equal to pre-
If the value of period, therefore, by the first image transmitting to server.It certainly, in the specific implementation process, can be according to two kinds
Condition judges together, such as: the number of the first image and the difference of the transmission number of the last image are equal to preset time period
Value, and in the case where multiple difference values are respectively less than preset threshold, by the first image transmitting to server.
It gives one example, is judged together for example according to two kinds of conditions again: if the number of multiple difference values is 4, it is assumed that is pre-
If the period is the processing time of 4 images, one shares the image of 10 numbers, the respective number point of the image of this 10 numbers
Wei not be from 1 to 10, and three adjacent images are similar, i.e., the difference value of three adjacent images is respectively less than preset threshold；If
The condition for only meeting " multiple difference values are respectively less than preset threshold " is then sent, then this 10 images can not sent；If full
" multiple difference values are respectively less than preset threshold, and the difference of the transmission time of the acquisition time of the first image and the last image to foot
Value be greater than or equal to preset time period " condition then send, then meet " multiple difference values are respectively less than preset threshold " condition,
But it is unsatisfactory for that " difference of the transmission time of the acquisition time of the first image and the last image is greater than or equal to preset time
The condition of section ", therefore, every 4 images will be sent once, it is possible to understand that, it will it is 1,5 and 9 transmissions, or will be 2,
6 and 10 send, or are 3 and 7 transmissions, or are 4 and 8 transmissions.Benefit using this method of the embodiment of the present application exists
In when server is not received by image for a long time, it can be determined that go out the transmission network between server and image sender
It has failed, rather than meet image caused by the condition of " multiple difference values are respectively less than preset threshold " and do not transmit.
Continue to illustrate with above example, it is understood that there may be a kind of situation for example: if the number of multiple difference values is 4,
The difference value of three adjacent images is respectively less than preset threshold, specifically, difference value be respectively less than the number of preset threshold for example, 1,
2 and 3,2,3 and 4, and so on, 8,9 and 10 difference value is again smaller than preset threshold, and still, the image that number is 1 is with number
10 image difference value has been over preset threshold.If being sentenced from whether image difference value is greater than the condition of preset threshold
Whether the image that breaks transmits, then the image that number is 1 to 10 will not be sent, there have been long-term images not to send at this time
The case where.Therefore, the benefit that method provided by the embodiments of the present application uses two kinds of conditions of image difference value and time to judge together
It is, is effectively prevented from the case where image of above-mentioned number 1 to number 10 is not sent, that is, efficiently avoids long-term image
The case where not sending.
Step S400: if multiple difference values are respectively less than preset threshold, and the acquisition time of the first image and the last figure
The difference of the transmission time of picture is less than preset time period, then stops the transmission of the first image.
Wherein, preset threshold can be a specific value, such as 100 or 120, be also possible to be generated by a function
Value, such as: the function of setting may is that f (x)=50 × (1-e-x)/(1+ex), wherein e is naturally normal for one in mathematics
A several and nonterminating and non-recurring decimal, x are the difference of number picture number compared with of this frame picture.When here default
Between section be also possible to a specific period, such as: 5 seconds or 10 seconds periods or a picture number with it is another
Picture number difference as preset time period, such as: preset time period 4, such as: the number of the first image is
201905081234571, the number that previous frame sends picture is 201905081234567, then difference is 4, the volume of the first image
Number it is less than the value of preset time period with the difference of the transmission number of the last image, therefore, the first image should not transmit.
It, can be by image before the difference of the transmission time of the acquisition time and the last image that calculate the first image
It is numbered, can number sequentially in time, can also be numbered using timestamp, such as: the picture number of this frame is
201905081234571, the picture number of previous frame is 201905081234567 etc..The acquisition time of first image with most
The specific calculation of the difference of the transmission time of a nearly image can subtract previous frame for this frame picture number and send picture
Number, data instance in face herein above, then the transmission time of the acquisition time of the first image and the last image
Difference is 4.
During above-mentioned realization, stop the biography of image by two dimensions of the difference value and time between picture
It is defeated, to prevent unnecessary image transmitting, effectively improve image during thermal infrared imager transmission image it is long when
Between the case where not sending the problem of.
In the embodiment of the present application, after step S300, can also include:
Step S500: if any difference value in multiple difference values is greater than or equal to preset threshold, the first image is passed
Transport to server.
Wherein, it is above-mentioned judge image whether one of embodiment of transmission method can be with are as follows: successively comparing number is
201905081234570, the character of 201905081234569,201905081234568,201905081234567 picture
String, that is, the cryptographic Hash of image.If any difference value in multiple difference values is greater than or equal to preset threshold, here default
Threshold value is, for example, 100, then by the first image transmitting to server.During above-mentioned realization, pass through the difference between picture
Value determines to change image transmitting, ensure that the efficiency that discrepant image just transmits.
Second embodiment
Fig. 4 is referred to, Fig. 4 shows image transmission structural schematic diagram provided by the embodiments of the present application.The application is real
It applies example and provides a kind of image transmission 100, which includes:
First obtains module 110, and the character string of the first image for calculating acquisition obtains the first character string.
First comparison module 120 obtains multiple differences for comparing the difference of the first character string Yu multiple second character strings
Value, multiple second character strings are the character string for calculating multiple second images and obtaining, and multiple second images are adopting in the first image
Collect the multiple images acquired before the time.
First transmission module 130, if be respectively less than preset threshold for multiple difference values, and the acquisition time of the first image with
The difference of the transmission time of the last image is greater than or equal to preset time period, then by the first image transmitting to server.
During realization described above, determine to change plan by two dimensions of the difference value and time between picture
As transmission, the case where long-term image is not sent is efficiently avoided.
Optionally, in the embodiment of the present application, the device further include:
First stops module, if be respectively less than preset threshold for multiple difference values, and the acquisition time of the first image with most
The difference of the transmission time of a nearly image is less than preset time period, then stops the transmission of the first image.
Optionally, in the embodiment of the present application, which can also include:
Second transmission module, if being greater than or equal to preset threshold for any difference value in multiple difference values, by the
One image transmitting is to server.
Optionally, in the embodiment of the present application, the first acquisition module includes:
Second obtains module, for zooming in and out and gray proces the first image, obtains the first grayscale image, the first gray scale
Figure includes the corresponding gray value of multiple pixels.
Third obtains module, for calculating the average value of the corresponding gray value of multiple pixels, obtains the first average value.
4th obtains module, for by the first average value gray value ratio corresponding with each pixel in multiple pixels
Compared with acquisition character string.
Optionally, in the embodiment of the present application, the second acquisition module includes:
Image scaling module obtains the second image for zooming in and out the first image to pre-set dimension.
Gradation processing module obtains for the second image to be carried out gray proces using maximum value process or mean value method
One grayscale image.
Optionally, in the embodiment of the present application, third acquisition module includes:
Average value obtains module, is used for basisThe average value of the corresponding gray value of multiple pixels is calculated,
Obtain the first average value；Wherein,For the first average value, i is the ith pixel point in multiple pixels, xiFor multiple pixels
The corresponding gray value of ith pixel point in point, n are the number of multiple pixels.
Optionally, in the embodiment of the present application, the 4th acquisition module includes:
First object module, if it is corresponding to be less than or equal to each pixel in multiple pixels for the first average value
Comparison result is then denoted as one by gray value.
Second object module, if being greater than the corresponding gray scale of each pixel in multiple pixels for the first average value
Value, then be denoted as zero for comparison result.
Connection result module, the character string for comparison result to be sequentially connected acquisition are determined as character string.
Optionally, in the embodiment of the present application, the first comparison module includes:
5th obtains module, for the second character string of each of multiple second character strings and the first character string to be done exclusive or
Operation obtains multiple third character strings.
6th obtains module, for the numerical value in third character string each in multiple third character strings to add up, obtains more
A difference value.
In several embodiments provided by the embodiments of the present application, it should be understood that disclosed device and method can also lead to
Other modes are crossed to realize.Installation practice described above is only illustrative, for example, flow chart and block diagram in attached drawing
Show the device of multiple embodiments according to the embodiment of the present application, the system in the cards of method and computer program product
Framework, function and operation.In this regard, each box in flowchart or block diagram can represent a module, program segment or generation
A part of code, a part of module, section or code include it is one or more it is for implementing the specified logical function can
It executes instruction.It should also be noted that some as replacement implementations in, function marked in the box can also and attached drawing
Middle marked order of occurrence is different.For example, two continuous boxes can actually be basically executed in parallel, they are sometimes
It can execute in the opposite order, this is depending on related function.It is also noted that in block diagram and or flow chart
The combination of box in each box and block diagram and or flow chart can execute the dedicated base of defined function or movement
It realizes, or can realize using a combination of dedicated hardware and computer instructions in the system of hardware.
In addition, each functional module in each embodiment of the embodiment of the present application can integrate one independence of formation together
Part, be also possible to modules individualism, an independent portion can also be integrated to form with two or more modules
Point.
If function is realized and when sold or used as an independent product in the form of software function module, can store
In computer-readable storage medium.Based on this understanding, the technical solution of the embodiment of the present application is substantially right in other words
The part of part or the technical solution that the prior art contributes is expressed in the form of software products, and the computer is soft
Part product is stored in a storage medium, including some instructions with so that computer equipment execute it is each in the embodiment of the present application
The all or part of the steps of embodiment method.Computer equipment above-mentioned includes: personal computer, server, mobile device, intelligence
Energy wearable device, the network equipment, virtual unit etc. are various to have the equipment for executing program code ability, storage medium packet above-mentioned
Include: USB flash disk, mobile hard disk, read-only memory, random access memory, magnetic disk, tape or CD etc. are various to can store program
The medium of code.
Above description, the only optional embodiment of the embodiment of the present application, but the protection scope of the embodiment of the present application is simultaneously
Not limited to this, anyone skilled in the art, can be easily in the technical scope that the embodiment of the present application discloses
Expect change or replacement, should all cover within the protection scope of the embodiment of the present application.
Claims (10)
1. a kind of image transfer method characterized by comprising
The character string of the first image of acquisition is calculated, the first character string is obtained；
The difference for comparing first character string Yu multiple second character strings obtains multiple difference values, the multiple second character
String to calculate the character string that multiple second images obtain, the multiple second image be the first image acquisition time it
The multiple images of preceding acquisition；
If the multiple difference value is respectively less than preset threshold, and the biography of the acquisition time of the first image and the last image
The difference of defeated time is greater than or equal to preset time period, then the first image is transmitted to server.
2. the method according to claim 1, wherein in first character string and the multiple the
The difference of two character strings, after obtaining multiple difference values, further includes:
If the multiple difference value is respectively less than preset threshold, and the biography of the acquisition time of the first image and the last image
The difference of defeated time is less than preset time period, then stops the transmission of the first image.
3. the method according to claim 1, wherein in first character string and the multiple the
The difference of two character strings, after obtaining multiple difference values, further includes:
If any difference value in the multiple difference value is greater than or equal to the preset threshold, the first image is transmitted
To server.
4. the method according to claim 1, wherein the character string of first image for calculating acquisition, comprising:
The first image is zoomed in and out and gray proces, obtains the first grayscale image, first grayscale image includes multiple pictures
The corresponding gray value of vegetarian refreshments；
The average value of the corresponding gray value of the multiple pixel is calculated, the first average value is obtained；
By first average value compared with the corresponding gray value of each pixel in the multiple pixel, character is obtained
String.
5. according to the method described in claim 4, it is characterized in that, it is described by the first image zoom in and out at gray scale
Reason obtains the first grayscale image, comprising:
The first image is zoomed in and out to pre-set dimension, the second image is obtained；
Second image is subjected to gray proces using maximum value process or mean value method, obtains the first grayscale image.
6. according to the method described in claim 4, it is characterized in that, the multiple pixel corresponding gray value of calculating
Average value obtains the first average value, comprising:
According toThe average value of the corresponding gray value of the multiple pixel is calculated, the first average value is obtained；Wherein,For first average value, i is the ith pixel point in the multiple pixel, xiFor i-th in the multiple pixel
The corresponding gray value of a pixel, n are the number of the multiple pixel.
7. according to the method described in claim 4, it is characterized in that, described by first average value and the multiple pixel
In the corresponding gray value of each pixel compare, obtain character string, comprising:
If first average value is less than or equal to the corresponding gray value of each pixel in the multiple pixel, will compare
Relatively result is denoted as one；
If first average value is greater than the corresponding gray value of each pixel in the multiple pixel, by the comparison
As a result it is denoted as zero；
The character string that the comparison result is sequentially connected acquisition is determined as character string.
8. the method according to claim 1, wherein first character string and the multiple second
The difference of character string obtains multiple difference values, comprising:
The second character string of each of the multiple second character string and first character string are done into XOR operation, obtained multiple
Third character string；
Numerical value in third character string each in the multiple third character string is added up, multiple difference values are obtained.
9. a kind of image transmission characterized by comprising
First obtains module, and the character string of the first image for calculating acquisition obtains the first character string；
First comparison module obtains multiple difference values for the difference of first character string and multiple second character strings,
The multiple second character string is the character string for calculating multiple second images and obtaining, and the multiple second image is described first
The multiple images acquired before the acquisition time of image；
First transmission module, if being respectively less than preset threshold, and the acquisition time of the first image for the multiple difference value
It is greater than or equal to preset time period with the difference of the transmission time of the last image, then the first image is transmitted to service
Device.
10. device according to claim 9, which is characterized in that further include:
First stops module, if being respectively less than preset threshold, and the acquisition time of the first image for the multiple difference value
It is less than preset time period with the difference of the transmission time of the last image, then stops the transmission of the first image.
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