CN111459807A - Image transmission detection method and device - Google Patents
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Abstract
The disclosure provides an image transmission detection method and device, and relates to the technical field of image transmission. The method comprises the following steps: acquiring connection information between an image acquisition end and an image receiving end, and an original image sent by the image acquisition end and a display image received by the image receiving end; the original image sent by the image acquisition end and the display image received by the image receiving end have the same content; determining the connection power between the image acquisition end and the image receiving end according to the connection information between the image acquisition end and the image receiving end; determining the image display quality of an image receiving end according to an original image sent by the image acquisition end and a display image received by the image receiving end; and calculating the quality of the image acquisition transmission system according to the connection success rate between the image acquisition end and the image receiving end and the image display quality of the image receiving end. The method and the device can solve the problem that the quality of the image transmission system cannot be comprehensively and accurately calculated in the prior art.
Description
Technical Field
The present disclosure relates to the field of image transmission technologies, and in particular, to an image transmission detection method and apparatus.
Background
At present, when an image acquisition transmission system (including an image acquisition zero terminal and an image receiving zero terminal) is used for software testing, software version quality indexes of the image acquisition transmission system are obtained manually.
For example, two key indexes during software testing of the image acquisition and transmission system include connection success rate and image display quality. The connection power is obtained by repeatedly establishing a connection relation between the image acquisition zero terminal and the image receiving zero terminal on a debugging webpage of the image acquisition zero terminal, manually observing whether the connection is successful or not and recording, and therefore roughly counting the connection success rate; and the image display quality is evaluated by observing the display image through human eyes.
It is obvious that this method is very inefficient and cannot achieve 24-hour observation manually, so that the data analysis result is not comprehensive enough, and in addition, for the evaluation of image quality, the evaluation result is very different due to the difference in the individual visual observation experience.
Disclosure of Invention
The present disclosure is directed to overcome the deficiencies of the prior art, and provide an image transmission detection method and apparatus, which can solve the problem in the prior art that the quality of an image transmission system cannot be calculated comprehensively and accurately.
According to a first aspect of the embodiments of the present disclosure, there is provided an image transmission detection method applied to a comprehensive test analysis device, the method including:
acquiring connection information between an image acquisition end and an image receiving end, and an original image sent by the image acquisition end and a display image received by the image receiving end; the original image sent by the image acquisition end and the display image received by the image receiving end have the same content;
determining the connection power between the image acquisition end and the image receiving end according to the connection information between the image acquisition end and the image receiving end; determining the image display quality of an image receiving end according to an original image sent by the image acquisition end and a display image received by the image receiving end;
and calculating the quality of the image acquisition transmission system according to the connection success rate between the image acquisition end and the image receiving end and the image display quality of the image receiving end.
In one embodiment, the acquiring the connection information between the image acquisition end and the image receiving end comprises:
acquiring data of connection initiation of the image acquisition terminal, data of whether the connection initiation is successful and data of disconnection, which are stored in a database of the image acquisition terminal;
determining the connection power between the image acquisition end and the image receiving end according to the connection information between the image acquisition end and the image receiving end comprises the following steps:
and determining the connection power between the image acquisition end and the image receiving end according to the data of connection initiation of the image acquisition end, the data of whether the initiated connection is successful and the data of disconnection.
In one embodiment, the acquiring the connection information between the image acquisition end and the image receiving end comprises:
the method comprises the steps that an image acquisition end is indicated to detect a local connection state between the image acquisition end and an image receiving end in real time, and when a connection request is detected to be initiated, the connection request is successful or failed, or the connection is disconnected, corresponding data are sent to a comprehensive test analysis device;
receiving and recording corresponding data sent by an image acquisition end;
determining the connection power between the image acquisition end and the image receiving end according to the connection information between the image acquisition end and the image receiving end comprises the following steps:
and determining the connection power between the image acquisition end and the image receiving end according to the received and recorded corresponding data.
In one embodiment, the connection information carries time information and network information.
In one embodiment, the acquiring the original image sent by the image acquisition end and the display image received by the image receiving end comprises:
controlling a camera arranged at an image receiving end to shoot a display image at the image receiving end at fixed time, and sending the shot display image to a comprehensive test analysis device;
indicating the image acquisition end to copy an original image currently sent to the image receiving end, and sending the copied original image to a comprehensive test analysis device;
and receiving the original image sent by the image acquisition end and the display image sent by the image receiving end.
In one embodiment, the acquiring the original image sent by the image acquisition end and the display image received by the image receiving end comprises:
sending an image acquisition instruction to an image acquisition device and an image receiving device according to a preset frequency;
the instruction image receiving device acquires a display image before the image is decoded and displayed according to the image acquisition instruction, and sends the acquired display image to the comprehensive test analysis device;
indicating the image acquisition end to copy an original image currently sent to the image receiving end, and sending the copied original image to a comprehensive test analysis device;
and receiving the original image sent by the image acquisition end and the display image sent by the image receiving end.
In one embodiment, the display image sent by the image receiving end to the integrated test analysis device and the original image sent by the image acquisition end to the integrated test analysis device both comprise a plurality of continuous frames.
In one embodiment, determining the connection power between the image capturing end and the image receiving end according to the connection information between the image capturing end and the image receiving end comprises:
determining the connection power between the image acquisition end and the image receiving end in each time period according to the connection information between the image acquisition end and the image receiving end in each time period; or the like, or, alternatively,
determining the connection power between the image acquisition end and the image receiving end within one continuous time according to the connection information between the image acquisition end and the image receiving end within one continuous time; or
And determining the connection power between the image acquisition end and the image receiving end in different network states according to the connection information between the image acquisition end and the image receiving end in different network states.
In one embodiment, determining the image display quality of the image receiving end according to the original image sent by the image acquisition end and the display image received by the image receiving end comprises:
determining the image display quality of an image receiving end based on the peak signal-to-noise ratio (PSNR); wherein the content of the first and second substances,
the peak signal-to-noise ratio PSNR is calculated by the following formula:
wherein MSE is the mean square error of the current image X and the reference image Y, H is the height of the image, W is the width of the image, n is the number of bits per pixel, and is generally 8, that is, the number of pixel gray levels is 256;
when the peak signal-to-noise ratio PSNR value is larger than a first preset value, determining that the image display quality of an image receiving end is excellent;
when the peak signal-to-noise ratio PSNR value is larger than or equal to a second preset value and smaller than the first preset value, determining that the image display quality of an image receiving end is better, wherein the second preset value is smaller than the first preset value;
when the peak signal-to-noise ratio PSNR value is larger than or equal to a third preset value and smaller than a second preset value, determining that the image display quality of an image receiving end is poor, wherein the third preset value is smaller than the second preset value;
and when the peak signal-to-noise ratio PSNR value is smaller than a third preset value, determining that the image display quality of the image receiving end is poor.
According to a second aspect of the embodiments of the present disclosure, there is provided an image transmission detection apparatus including:
the acquisition module acquires the connection information between the image acquisition end and the image receiving end, and an original image sent by the image acquisition end and a display image generation module received by the image receiving end;
the processing module is used for determining the connection power between the image acquisition end and the image receiving end according to the connection information between the image acquisition end and the image receiving end; determining the image display quality of an image receiving end according to an original image sent by the image acquisition end and a display image received by the image receiving end;
and the calculating module is used for calculating the quality of the image acquisition and transmission system according to the connection success rate between the image acquisition end and the image receiving end and the image display quality of the image receiving end.
The image transmission detection method provided by the disclosure can assist a tester in completing the evaluation of the software version quality of an image acquisition and transmission system, has high accuracy of evaluation data of connection work rate, and can analyze statistical data from multiple angles and obtain an analysis result, so that the tester can comprehensively and accurately evaluate the connection power of the system; in addition, the test analysis tool provided by the disclosure can automatically realize the evaluation and analysis of the picture quality, and the standard of the evaluation and analysis is uniform, so that the difference caused by different observation individuals is avoided as in the prior art.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a flowchart of an image transmission detection method according to an embodiment of the present disclosure.
Fig. 2 is an architecture diagram of an image transmission detection apparatus according to an embodiment of the present disclosure.
Fig. 3 is an exemplary structural framework diagram for an image transmission detection system in the present disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The embodiment of the disclosure provides an image transmission detection method, which is applied to a comprehensive test analysis device. As shown in fig. 1, the image transmission detection method includes the steps of:
in one embodiment, the acquiring the connection information between the image acquisition end and the image receiving end comprises:
acquiring data of connection initiation of the image acquisition terminal, data of whether the connection initiation is successful and data of disconnection, which are stored in a database of the image acquisition terminal;
determining the connection power between the image acquisition end and the image receiving end according to the connection information between the image acquisition end and the image receiving end comprises the following steps:
and determining the connection power between the image acquisition end and the image receiving end according to the data of connection initiation of the image acquisition end, the data of whether the initiated connection is successful and the data of disconnection.
Specifically, in an actual testing process, an image acquisition zero terminal (equivalent to an image acquisition terminal in the present disclosure) may establish a connection with an image reception zero terminal (equivalent to an image receiving terminal in the present disclosure) through a debugging page, if the connection fails, reconnection is continuously initiated, if the original connection is disconnected, the connection is reestablished, in this process, all connection and connection results and data of the connection disconnection are recorded in a database of the image acquisition zero terminal, so that the integrated test analysis apparatus may obtain, from the database, data of whether the connection initiated by the image acquisition zero terminal and the initiated connection are successful and data of the connection disconnection.
In one embodiment, the acquiring the connection information between the image acquisition end and the image receiving end comprises:
the method comprises the steps that an image acquisition end is indicated to detect a local connection state between the image acquisition end and an image receiving end in real time, and when a connection request is detected to be initiated, the connection request is successful or failed, or the connection is disconnected, corresponding data are sent to a comprehensive test analysis device;
receiving and recording corresponding data sent by an image acquisition end;
determining the connection power between the image acquisition end and the image receiving end according to the connection information between the image acquisition end and the image receiving end comprises the following steps:
and determining the connection power between the image acquisition end and the image receiving end according to the received and recorded corresponding data.
Illustratively, the image acquisition zero terminal continuously detects the local connection condition, and when a connection request is initiated, the connection request is successful or failed, or the connection is disconnected, corresponding data is immediately sent to the comprehensive test analysis device, so that the comprehensive test analysis device can record the data and form an analysis result.
In one embodiment, the connection information carries time information and network information.
In this embodiment, while acquiring the data related to the connection success rate, the integrated test analysis device needs to acquire the time when the corresponding data is generated and the network connection information when the corresponding data is generated, where the network connection information includes, but is not limited to, a network connection mode (SIP or WAN or L AN) and a network speed.
In one embodiment, the acquiring the original image sent by the image acquisition end and the display image received by the image receiving end comprises:
controlling a camera arranged at an image receiving end to shoot a display image at the image receiving end at fixed time, and sending the shot display image to a comprehensive test analysis device;
indicating the image acquisition end to copy an original image currently sent to the image receiving end, and sending the copied original image to a comprehensive test analysis device;
and receiving the original image sent by the image acquisition end and the display image sent by the image receiving end.
Specifically, a camera capable of acquiring a display picture of the image receiving zero terminal side is arranged on the image receiving zero terminal side, the camera shoots the display picture of the image receiving zero terminal side at regular time under the control of the comprehensive test analysis device, the shot picture is transmitted to the comprehensive test analysis device, and the comprehensive test analysis device instructs the camera to shoot and simultaneously instructs the image collecting zero terminal to copy an image currently transmitted to the image receiving zero terminal and return the copy to the image collecting zero terminal.
In this way, the integrated test analysis device can acquire the image transmitted from the image acquisition zero terminal and the display image on the image reception zero terminal side at the same time point.
Preferably, a certain delay is generated between the sending and receiving display of the image, so that when the image acquisition zero terminal copies and sends the image according to the instruction of the comprehensive test analysis device, continuous multi-frame images can be copied and sent to the comprehensive test analysis device, and similarly, on the image reception zero terminal side, the camera can continuously shoot the multi-frame images and then send the multi-frame images to the comprehensive test analysis device. A group (a group of two images) or a plurality of groups of images with the same content are found by comparison by the comprehensive test analysis device to form a comparison group, and image quality evaluation is carried out based on the images, while other images can be directly discarded.
In one embodiment, the acquiring the original image sent by the image acquisition end and the display image received by the image receiving end comprises:
sending an image acquisition instruction to an image acquisition device and an image receiving device according to a preset frequency;
the instruction image receiving device acquires a display image before the image is decoded and displayed according to the image acquisition instruction, and sends the acquired display image to the comprehensive test analysis device;
indicating the image acquisition end to copy an original image currently sent to the image receiving end, and sending the copied original image to a comprehensive test analysis device;
and receiving the original image sent by the image acquisition end and the display image sent by the image receiving end.
Specifically, the comprehensive test analysis device respectively sends an image acquisition instruction to an image receiving zero terminal and an image acquisition zero terminal according to a preset frequency; and the image receiving zero terminal side captures a display picture before the image is decoded and displayed according to the image acquisition quality, sends the captured picture to the comprehensive analysis testing device, and simultaneously copies the image which is sent locally and sends the copied image to the comprehensive analysis testing device.
Preferably, the images acquired by the image acquisition zero terminal and the image receiving zero terminal according to the image acquisition instruction can be continuous multiple frames, so that the problem that the two frames of images are not matched in content when only one frame of image is returned from two sides due to time delay can be avoided.
When a display screen transmitted back by the camera or the image receiving zero terminal is received, the comprehensive test analysis device also needs to record the generation time of the corresponding display screen, so that the evaluation result is analyzed based on the time.
102, determining the connection power between the image acquisition end and the image receiving end according to the connection information between the image acquisition end and the image receiving end; determining the image display quality of an image receiving end according to an original image sent by the image acquisition end and a display image received by the image receiving end;
in one embodiment, determining the connection power between the image capturing end and the image receiving end according to the connection information between the image capturing end and the image receiving end comprises:
determining the connection power between the image acquisition end and the image receiving end in each time period according to the connection information between the image acquisition end and the image receiving end in each time period;
illustratively, the number of people using the network can be simply divided into: busy hour, general busy hour, and three periods when completely idle, busy hour generally indicates daytime working hours, and specifically can be set as: 8:30-19:00, and the general busy hour can be specifically set as follows: 19:00-23: 59; when completely idle, the following specific settings can be set: 00:00-8:30, of course, in practical application, the time interval division can be completely set according to the analysis requirement, and this embodiment is not limited
In one embodiment, determining the connection power between the image capturing end and the image receiving end according to the connection information between the image capturing end and the image receiving end comprises:
determining the connection power between the image acquisition end and the image receiving end within one continuous time according to the connection information between the image acquisition end and the image receiving end within one continuous time;
illustratively, the connection success rate over a period of time may be evaluated, or the overall connection success rate may be evaluated.
Wherein, a period of time, for example, can refer to a continuous month or a continuous week, etc., and the specific duration can be set and adjusted as required.
In one embodiment, determining the connection power between the image capturing end and the image receiving end according to the connection information between the image capturing end and the image receiving end comprises:
and determining the connection power between the image acquisition end and the image receiving end in different network states according to the connection information between the image acquisition end and the image receiving end in different network states.
For example, the data in the SIP network may be analyzed to obtain the evaluation result, and the data in the WAN or L AN network may also be analyzed to obtain the evaluation result.
In addition, evaluation data under different network speeds can be given, for example, data under the conditions of good network speed, normal network speed, poor network speed and very poor network speed are analyzed, and an analysis result is obtained.
In one embodiment, determining the image display quality of the image receiving end according to the original image sent by the image acquisition end and the display image received by the image receiving end comprises:
determining the image display quality of an image receiving end based on the peak signal-to-noise ratio (PSNR); wherein the content of the first and second substances,
the peak signal-to-noise ratio PSNR is calculated by the following formula:
wherein MSE is the mean square error of the current image X and the reference image Y, H is the height of the image, W is the width of the image, n is the number of bits per pixel, and is generally 8, that is, the number of pixel gray levels is 256;
when the peak signal-to-noise ratio PSNR value is larger than a first preset value, determining that the image display quality of an image receiving end is excellent;
when the peak signal-to-noise ratio PSNR value is larger than or equal to a second preset value and smaller than the first preset value, determining that the image display quality of an image receiving end is better, wherein the second preset value is smaller than the first preset value;
when the peak signal-to-noise ratio PSNR value is larger than or equal to a third preset value and smaller than a second preset value, determining that the image display quality of an image receiving end is poor, wherein the third preset value is smaller than the second preset value;
and when the peak signal-to-noise ratio PSNR value is smaller than a third preset value, determining that the image display quality of the image receiving end is poor.
Illustratively, when the PSNR is 40dB or more, the image quality is considered to be excellent (i.e., very close to the original image);
when the PSNR is more than 40 and more than or equal to 30dB, the image quality is considered to be better (namely the distortion can be perceived but can be accepted);
when the PSNR is more than 30 and is more than or equal to 20dB, the image quality is considered to be poor;
when PSNR < 20dB, the image quality is considered to be very poor (image quality is unacceptable).
It should be noted that the present embodiment may also evaluate the image quality through SSIM.
And 103, calculating the quality of the image acquisition and transmission system according to the connection success rate between the image acquisition end and the image receiving end and the image display quality of the image receiving end.
Optionally, the analysis result is output in a webpage or report form; besides the statistical data and various analysis results are given in the output webpage and the report, the statistical data and the analysis results can be visually displayed in various chart modes.
The image transmission detection method provided by the disclosure can assist a tester in completing the evaluation of the software version quality of an image acquisition and transmission system, has high accuracy of evaluation data of connection work rate, and can analyze statistical data from multiple angles and obtain an analysis result, so that the tester can comprehensively and accurately evaluate the connection power of the system; in addition, the test analysis tool provided by the disclosure can automatically realize the evaluation and analysis of the picture quality, and the standard of the evaluation and analysis is uniform, so that the difference caused by different observation individuals is avoided as in the prior art.
Fig. 2 is a diagram of an image transmission detection apparatus provided in an embodiment of the present disclosure, as shown in fig. 2, the image transmission detection apparatus includes an acquisition module 201, a processing module 202, and a calculation module 203; the first obtaining module 201 is configured to obtain connection information between an image collecting end and an image receiving end, and an original image sent by the image collecting end and a display image generating module received by the image receiving end; the processing module 202 is configured to determine a connection power between the image acquisition end and the image receiving end according to connection information between the image acquisition end and the image receiving end; determining the image display quality of an image receiving end according to an original image sent by the image acquisition end and a display image received by the image receiving end; the calculating module 203 is configured to calculate the quality of the image acquisition and transmission system according to the connection success rate between the image acquisition end and the image receiving end and the image display quality of the image receiving end.
Fig. 3 is an exemplary structural framework diagram for the image transmission system in the present disclosure. Referring to fig. 3, an image capturing zero terminal 301 (equivalent to an image capturing end of the present disclosure) is located on a service computer 302, and is configured to obtain a desktop display image from the service computer 302 and send the desktop display image to an image receiving zero terminal 303 (equivalent to an image receiving end of the present disclosure); the image receiving zero terminal 303 is connected to the display 304, and is configured to display a desktop display image acquired from the image capturing zero terminal 301 side; the integrated test analysis device 305 communicates with the image capture zero terminal 301 and the image reception zero terminal 303 via a network.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. An image transmission detection method is applied to a comprehensive test analysis device, and comprises the following steps:
acquiring connection information between an image acquisition end and an image receiving end, and an original image sent by the image acquisition end and a display image received by the image receiving end; the original image sent by the image acquisition end and the display image received by the image receiving end have the same content;
determining the connection power between the image acquisition end and the image receiving end according to the connection information between the image acquisition end and the image receiving end; determining the image display quality of an image receiving end according to an original image sent by the image acquisition end and a display image received by the image receiving end;
and calculating the quality of the image acquisition transmission system according to the connection success rate between the image acquisition end and the image receiving end and the image display quality of the image receiving end.
2. The method according to claim 1, wherein the acquiring connection information between the image acquisition end and the image receiving end comprises:
acquiring data of connection initiation of the image acquisition terminal, data of whether the connection initiation is successful and data of disconnection, which are stored in a database of the image acquisition terminal;
determining the connection power between the image acquisition end and the image receiving end according to the connection information between the image acquisition end and the image receiving end comprises the following steps:
and determining the connection power between the image acquisition end and the image receiving end according to the data of connection initiation of the image acquisition end, the data of success or failure of the initiated connection and the data of disconnection.
3. The method according to claim 1, wherein the acquiring connection information between the image acquisition end and the image receiving end comprises:
the method comprises the steps that an image acquisition end is indicated to detect a local connection state between the image acquisition end and an image receiving end in real time, and when a connection request is detected to be initiated, the connection request is successful or failed, or the connection is disconnected, corresponding data are sent to a comprehensive test analysis device;
receiving and recording the corresponding data sent by the image acquisition end;
determining the connection power between the image acquisition end and the image receiving end according to the connection information between the image acquisition end and the image receiving end comprises the following steps:
and determining the connection power between the image acquisition end and the image receiving end according to the received and recorded corresponding data.
4. The method according to any of claims 1-3, wherein the connection information carries time information and network information.
5. The method of claim 1, wherein obtaining the original image sent by the image capturing end and the display image received by the image receiving end comprises:
controlling a camera arranged at an image receiving end to shoot a display image at the image receiving end at fixed time, and sending the shot display image to a comprehensive test analysis device;
indicating the image acquisition end to copy an original image currently sent to the image receiving end, and sending the copied original image to a comprehensive test analysis device;
and receiving the original image sent by the image acquisition end and the display image sent by the image receiving end.
6. The method according to claim 1, wherein the acquiring the original image sent by the image acquisition end and the display image received by the image receiving end comprises:
sending an image acquisition instruction to an image acquisition device and an image receiving device according to a preset frequency;
the instruction image receiving device acquires a display image before the image is decoded and displayed according to the image acquisition instruction, and sends the acquired display image to the comprehensive test analysis device;
indicating the image acquisition end to copy an original image currently sent to the image receiving end, and sending the copied original image to a comprehensive test analysis device;
and receiving the original image sent by the image acquisition end and the display image sent by the image receiving end.
7. The method according to claim 5 or 6, wherein the display image sent by the image receiving end to the integrated test analysis device and the original image sent by the image acquisition end to the integrated test analysis device each comprise a plurality of continuous frames.
8. The method of claim 1, wherein determining the connection power between the image capturing end and the image receiving end according to the connection information between the image capturing end and the image receiving end comprises:
determining the connection power between the image acquisition end and the image receiving end in each time period according to the connection information between the image acquisition end and the image receiving end in each time period; or the like, or, alternatively,
determining the connection power between the image acquisition end and the image receiving end within one continuous time according to the connection information between the image acquisition end and the image receiving end within one continuous time; or the like, or, alternatively,
and determining the connection power between the image acquisition end and the image receiving end in different network states according to the connection information between the image acquisition end and the image receiving end in different network states.
9. The method according to claim 1, wherein the determining the image display quality of the image receiving end according to the original image sent by the image capturing end and the display image received by the image receiving end comprises:
determining the image display quality of an image receiving end based on the peak signal-to-noise ratio (PSNR); wherein the content of the first and second substances,
the calculation formula of the peak signal-to-noise ratio PSNR is as follows:
wherein MSE is the mean square error of the current image X and the reference image Y, H is the height of the image, W is the width of the image, n is the number of bits per pixel, and is generally 8, that is, the number of pixel gray levels is 256;
when the peak signal-to-noise ratio PSNR value is larger than a first preset value, determining that the image display quality of an image receiving end is excellent;
when the peak signal-to-noise ratio PSNR value is larger than or equal to a second preset value and smaller than a first preset value, determining that the image display quality of an image receiving end is better, wherein the second preset value is smaller than the first preset value;
when the peak signal-to-noise ratio PSNR value is larger than or equal to a third preset value and smaller than a second preset value, determining that the image display quality of an image receiving end is poor, wherein the third preset value is smaller than the second preset value;
and when the peak signal-to-noise ratio PSNR value is smaller than a third preset value, determining that the image display quality of the image receiving end is poor.
10. An image transmission detection apparatus, characterized in that the apparatus comprises:
the acquisition module acquires connection information between the image acquisition end and the image receiving end, an original image sent by the image acquisition end and a display image received by the image receiving end;
the processing module is used for determining the connection power between the image acquisition end and the image receiving end according to the connection information between the image acquisition end and the image receiving end; determining the image display quality of the image receiving end according to the original image sent by the image acquisition end and the display image received by the image receiving end;
and the calculating module is used for calculating the quality of the image acquisition and transmission system according to the connection success rate between the image acquisition end and the image receiving end and the image display quality of the image receiving end.
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