CN115460358B - Display method, display device and display screen - Google Patents
Display method, display device and display screen Download PDFInfo
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- CN115460358B CN115460358B CN202211143379.2A CN202211143379A CN115460358B CN 115460358 B CN115460358 B CN 115460358B CN 202211143379 A CN202211143379 A CN 202211143379A CN 115460358 B CN115460358 B CN 115460358B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Abstract
The invention discloses a display method, a display device and a display screen, which are characterized in that a plurality of signals are sourced from defined feature focus areas, feature focus objects and feature change conditions, video streams are intercepted at regular time and picture digital conversion is carried out on the signal sources, personalized monitoring on the signal sources is realized by utilizing technical means such as similarity judgment, the problem that a user is careful to use one video source is solved, meanwhile, the feature change monitoring on the video source can be carried out by self-defining signal source monitoring items, and when the video source meets the change characteristics, the display device timely reminds the user or automatically switches the display of the video source.
Description
Technical Field
The invention belongs to a display control technology, and particularly relates to a display method, a display device and a display screen.
Background
With the wider and wider application fields of display screens, the requirement of sharing one display screen by multiple video source terminals is also increasing, and in order to meet the requirement of sharing one display screen and switching video source display by multiple video sources, various video sharers and video switchers are introduced in the market. The existing video sharing device and video switching device meet the requirement that people share one display screen with a plurality of video source terminals, but people often need to pay attention to the change of image information of a plurality of video sources at the same time in actual use experience, and video delay caused by switching video sources back and forth with the same screen or poor use experience is brought to users by taking attention to a plurality of video source signals at the same time. Therefore, the display products with the same screen and multiple pictures are also available on the market, but most of the application fields of the display screens such as video monitoring, medical monitoring and care are still to adopt one display screen with the traditional size of more than ten inches and more than twenty inches to realize the same-screen and multiple-picture display, the display screens with the traditional size are limited by the size of the screen, the separation of multiple pictures on the same screen or the display information displayed by too small picture-in-picture surfaces are too small due to too small screen, and the display products with the function of amplifying single picture are also available, but the display products are continuously switched or amplified and reduced among a plurality of video sources, and meanwhile, the user is also required to keep attention to the inconvenient use experience caused by the change of a plurality of pictures. If there is a display device, which can not only meet the requirement of inputting multiple video sources, but also enable the user to use one video source exclusively, and at the same time, the display device automatically follows the picture change of other video sources, so that the user can customize the picture tracking condition, and when the other video sources meet the condition, the display device prompts or automatically switches the video picture for the user, so as to meet the requirement of the user on the simultaneous attention of multiple video sources and avoid the work of processing the current video source picture in a distracted manner? It is believed that this is also a technical problem that many video source users are eagerly desirous of solving in the display field.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a display method, a display device and a display screen.
As an aspect of the embodiments of the present disclosure, the embodiments of the present disclosure provide a display method, including the steps of:
a step of acquiring and identifying signal sources, which is to acquire a plurality of signal sources, identify codes for each signal source identification and receive the signal source video stream information;
a step of self-defining monitoring signal sources, wherein the signal sources to be monitored are selected through the identification codes, and video stream information of the signal sources is collected, in the process of displaying the video stream information, pictures with objects to be monitored in the video stream information are captured, the pictures are converted into first images through sampling and quantization, self-defining feature attention areas and feature attention objects are selected on the first images, feature change conditions are self-defined, and the self-defining feature attention areas, the feature attention objects and the feature change conditions are stored as signal source monitoring items based on the identification codes;
executing a signal source monitoring step, setting image monitoring time, associating the signal source monitoring item based on the identification code, carrying out video stream information screenshot on the signal source to be monitored according to the image monitoring time and the associated signal source monitoring item, converting the screenshot into a second image through sampling and quantization, carrying out feature attention area definition, feature attention object identification and feature change condition comparison judgment on the first image and the second image according to the signal source monitoring item, and sending an image feature change prompt instruction if the feature change condition is met by the comparison judgment; if the comparison judgment does not accord with the characteristic change condition, continuing to monitor the signal source;
and switching and displaying signal sources, namely receiving the change prompt instruction, identifying the signal source monitoring item, switching and displaying the corresponding signal source video stream information according to the identification code in the signal source monitoring item.
Further, the specific dividing step of the feature attention area is to divide the area range through a regular or irregular shape, and determine the divided area coordinates to determine the feature attention area according to the corresponding relation among the three of the image resolution, the image size and the matrix array after sampling and quantization conversion.
Further, the specific determination method of the feature focus object is to collect a contrast source image and a target monitoring image according to the image intercepted by the feature focus area, and the optimization formula is as follows:
wherein g is an image color distribution histogram of the target monitoring image, s is an image color distribution histogram of the contrast source image, N is a color space sampling point number, k represents a kth sampling point, sim (g, s) represents semantic similarity of g is the target monitoring image and s is the contrast source image.
Further, the specific self-defining method of the characteristic change condition is to set a threshold value of Sim (g, s), and when the result of Sim (g, s) is lower than the threshold value, the characteristic change is indicated and an image characteristic change prompt instruction is sent.
Further, the sampling is specifically that the image f (x, y) is digitally sampled, and the discrete quantity is used for forming a matrix g (i, j) two-stack array representation:
where g (i, j) represents each pixel element, i represents a row, j represents a column, m represents an mth pixel element of the row, n represents an nth pixel element of the column, and g (i, j) represents a (i, j) point as a sampling point gray value; the quantization is in particular a conversion of the sampled gray value from an analog image to a pixel dispersion, the pixel dispersion of the gray value ranging from 0 to 255.
Further, a priority monitoring level is set for the signal source monitoring item.
The embodiment of the application also provides a display device, which comprises:
the signal source input interface is used for acquiring a plurality of signal sources and receiving the video stream information of the signal sources, and adopts one or more of an MIPI interface, a USB port, a TYPE-C interface, an HDMI interface, a VGA interface, a DVI interface and a connector;
the interface identification coding module is used for each signal source identification code, is connected with the signal source input interface and is used for identifying the signal source input interface identification code;
the monitoring item self-defining module is used for self-defining and setting a characteristic attention area, a characteristic attention object and a characteristic change condition, the monitoring item self-defining module reads the identification code through the interface identification code module, the monitoring item self-defining module is provided with a storage unit, and the identification code is associated with a signal source monitoring item and is stored in the storage unit;
the monitoring analysis processing module is used for setting image monitoring time and monitoring the video stream information image characteristic change of the signal source, is in communication connection with the monitoring item self-defining module and receives the signal source monitoring item sent by the monitoring item self-defining module;
the signal source switching display module is used for switching the signal source and is in communication connection with the monitoring analysis processing module;
the display output interface is used for displaying the signal source video stream information and is controlled and connected by the signal source switching display module, and comprises a VGA interface, a DVI interface, a TYPE-C interface and an HDMI interface; the number of TYPE-C interfaces is two;
the communication module is used for sending an image characteristic change prompt instruction, and is in communication connection with the monitoring analysis processing module, and comprises a serial port interface, an Ethernet interface, a WIFI interface and a 4G/5G interface.
Further, the monitoring analysis processing module is provided with a video stream frame image acquisition unit and a similarity comparison unit, the video stream frame image acquisition unit is used for acquiring a comparison source image and a target monitoring image, the similarity comparison unit is used for calculating the similarity of the comparison source image and the target monitoring image, comparing the calculated similarity with a similarity threshold, if the calculated similarity is larger than the similarity threshold, determining that the comparison source image is consistent with the target monitoring image and does not accord with a monitoring feature change condition, otherwise, determining that the transmission of the comparison source image and the target monitoring image is changed and accords with the monitoring feature change condition.
Further, the monitoring project self-defining module can be arranged on a mobile terminal, the mobile terminal is in communication connection with the communication module, and the mobile terminal is a mobile phone or a tablet personal computer.
The embodiment of the application also provides a display screen, which comprises a backlight module and the display device.
Compared with the prior art, the display method, the display device and the display screen provided by the embodiment of the application have the advantages that the video stream is intercepted at regular time and the picture digital conversion is carried out on the signal source through the source definition feature attention area, the feature attention object and the feature change condition, the personalized monitoring of the signal source is realized by utilizing the technical means such as similarity judgment, the problem that a user is careful to use one video source is solved, meanwhile, the feature change monitoring can be carried out on the video source by customizing the signal source monitoring item, and when the video source meets the change feature, the display device timely reminds the user or automatically switches the display of the video source.
Drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
Fig. 1 is a flow chart of a display method provided in embodiment 1 of the present application;
fig. 2 is a schematic structural diagram of a display device according to embodiment 1 of the present application;
fig. 3 is a schematic structural diagram of a display device according to embodiment 2 of the present application;
fig. 4 is a schematic diagram for reference to use of a display screen according to an embodiment of the present application.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In embodiment 1, please refer to fig. 1, a display method includes the following steps:
a step of acquiring and identifying signal sources, wherein the signal sources can come from video monitoring equipment, monitoring equipment and video input equipment, and identify codes for each signal source, the identification codes distinguish video input sources, and receive the signal source video stream information;
a step of self-defining monitoring signal source, selecting the signal source to be monitored through the identification code and collecting video stream information of the signal source, capturing images of objects to be monitored in the video stream information in the process of displaying the video stream information, such as an electrocardiogram of medical monitoring equipment, distinguishing normal images from abnormal alarm images possibly with alarm signs or color changes in the process of electrocardiograph monitoring, converting the abnormal alarm images into first images through sampling and quantization, selecting a self-defining feature attention area and a feature attention object on the first images, wherein the feature attention area can be an area with alarm signs or an area with picture changes in the images, the feature attention object can be an alarm sign, and self-defining feature change conditions, namely, identifying the feature attention area and the image changes of the objects to be monitored, and storing the self-defining feature attention area, feature object and feature change conditions as signal source monitoring items based on the identification code, so that the self-defining monitoring condition can be distinguished from the signal source monitoring item;
executing a signal source monitoring step, setting image monitoring time and associating the signal source monitoring item based on the identification code, wherein the image monitoring time can be a certain time period or a period of time for carrying out image monitoring, carrying out video stream information screenshot on the signal source to be monitored according to the image monitoring time and the associated signal source monitoring item, converting the screenshot into a second image through sampling and quantization, wherein the second image can be an image intercepted by a normal image of the signal source, carrying out feature focus area definition, feature focus object identification and feature change condition comparison judgment on the first image and the second image according to the signal source monitoring item, namely monitoring whether a focus object or change appears in a region of interest of a normal image and an abnormal image to carry out the feature change condition comparison judgment, and sending an image feature change prompting instruction to a user terminal or a display screen to inform a user if the comparison judgment accords with the feature change condition; if the comparison judgment does not accord with the characteristic change condition, continuing to monitor the signal source;
and switching and displaying signal sources, namely receiving the change prompt instruction, identifying the signal source monitoring item, positioning the signal source, and switching and displaying the corresponding signal source video stream information according to the identification codes in the signal source monitoring item.
The specific dividing step of the characteristic attention area is to divide an area range through a regular shape or an irregular shape, the regular shape dividing area range can be rectangular, the irregular shape dividing area range can be round, oval or irregular shape, the corresponding relation among the three can be determined according to the image resolution, the image size and the matrix array after sampling and quantization conversion, the attention area can be more accurately positioned, and the divided area coordinates are determined to determine the characteristic attention area.
The specific determination method of the characteristic attention object is to collect a contrast source image and a target monitoring image respectively according to the image intercepted by the characteristic attention area, and the optimization formula is as follows:
wherein g is an image color distribution histogram of the target monitoring image, s is an image color distribution histogram of the contrast source image, N is a color space sampling point number, k represents a kth sampling point, sim (g, s) represents semantic similarity of g is the target monitoring image and s is the contrast source image.
The specific self-defining method of the characteristic change condition is to set a threshold value of Sim (g, s), and when the result of Sim (g, s) is lower than the threshold value, the characteristic change is indicated and an image characteristic change prompt instruction is sent.
The sampling is specifically that the image f (x, y) is digitally sampled, and a matrix g (i, j) is formed by discrete quantities to represent two stacks of arrays:
where g (i, j) represents each pixel element, i represents a row, j represents a column, m represents an mth pixel element of the row, n represents an nth pixel element of the column, and g (i, j) represents a (i, j) point as a sampling point gray value; the quantization is in particular a conversion of the sampled gray value from an analog image to a pixel dispersion, the pixel dispersion of the gray value ranging from 0 to 255.
The embodiment can also set a priority monitoring level for the signal source monitoring item, and monitor the signal source with high level preferentially.
In embodiment 1, referring to fig. 2, there is also provided a display device including:
the signal source input interface is used for acquiring a plurality of signal sources and receiving the video stream information of the signal sources, and adopts one or more of an MIPI interface, a USB port, a TYPE-C interface, an HDMI interface, a VGA interface, a DVI interface and a connector;
the interface identification coding module is used for each signal source identification code, is connected with the signal source input interface and is used for identifying the signal source input interface identification code;
the monitoring item self-defining module is used for self-defining and setting a characteristic attention area, a characteristic attention object and a characteristic change condition, the monitoring item self-defining module reads the identification code through the interface identification code module, the monitoring item self-defining module is provided with a storage unit, and the identification code is associated with a signal source monitoring item and is stored in the storage unit;
the monitoring analysis processing module is used for setting image monitoring time and monitoring the video stream information image characteristic change of the signal source, is in communication connection with the monitoring item self-defining module and receives the signal source monitoring item sent by the monitoring item self-defining module;
the signal source switching display module is used for switching the signal source and is in communication connection with the monitoring analysis processing module;
the display output interface is used for displaying the signal source video stream information and is controlled and connected by the signal source switching display module, and comprises a VGA interface, a DVI interface, a TYPE-C interface and an HDMI interface; the number of TYPE-C interfaces is two;
the communication module is used for sending an image characteristic change prompt instruction, and is in communication connection with the monitoring analysis processing module, and comprises a serial port interface, an Ethernet interface, a WIFI interface and a 4G/5G interface.
The monitoring analysis processing module is provided with a video stream frame image acquisition unit and a similarity comparison unit, the video stream frame image acquisition unit is used for acquiring a comparison source image and a target monitoring image, the similarity comparison unit is used for calculating the similarity of the comparison source image and the target monitoring image, comparing the calculated similarity with a similarity threshold, determining that the comparison source image is consistent with the target monitoring image if the calculated similarity is larger than the similarity threshold, and not conforming to a monitoring feature change condition, otherwise determining that the comparison source image is changed with the monitoring feature of the target monitoring image, and conforming to a monitoring feature change condition.
In embodiment 2, referring to fig. 3 and 4, the monitoring item customization module may be disposed in a mobile terminal, and is in communication connection with the communication module through the mobile terminal, so that a feature attention area, a feature attention object, and a feature change condition may be customized on the mobile terminal, and the feature attention area may be determined by touch selection of the attention area through a touch screen, and the feature attention object may be determined by touch selection of the attention object, where the mobile terminal is a mobile phone or a tablet computer.
The embodiment of the application also provides a display screen, which comprises a backlight module and the display device.
The embodiment of the application is different from the prior art, does not need to obtain the signal source alarm signal independently, can realize the switching of the signal source by identifying and judging the video stream frame image of the signal source, and can be applied to the special monitoring display fields of medical monitoring, nursing care, video monitoring, games and the like; the display device disclosed by the embodiment of the application can be also compatible with and connected with various display screens, so that waste and resource investment of the old display screen are avoided; the display device of the embodiment of the application can be further expanded to be connected with a plurality of signal sources.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (6)
1. A display method, comprising the steps of:
a step of acquiring and identifying signal sources, which is to acquire a plurality of signal sources, identify codes for each signal source identification and receive the signal source video stream information;
a step of self-defining monitoring signal sources, namely selecting the signal sources to be monitored through the identification codes and collecting video stream information of the signal sources, capturing pictures with objects to be monitored in the video stream information in the process of displaying the video stream information, converting the pictures into first images through sampling and quantization, selecting self-defining feature attention areas and feature attention objects on the first images, self-defining feature change conditions, storing the self-defining feature attention areas, the feature attention objects and the feature change conditions as signal source monitoring items based on the identification codes, wherein the feature attention areas are specifically marked by marking area ranges through regular or irregular shapes, and determining marked area coordinates to determine the feature attention areas according to the corresponding relation among the sampled and quantized image resolution, image sizes and matrix arrays; the specific determination method of the characteristic attention object is to collect a contrast source image and a target monitoring image respectively according to the image intercepted by the characteristic attention area, and the optimization formula is as follows:
wherein g is an image color distribution histogram of the target monitoring image, s is an image color distribution histogram of the contrast source image, N is a color space sampling point number, k represents a kth sampling point, sim (g, s) represents that g is the semantic similarity between the target monitoring image and s is the contrast source image, the characteristic change condition specific custom method is to set a threshold value of Sim (g, s), and when a result of Sim (g, s) is lower than the threshold value, the characteristic change is represented and an image characteristic change prompt instruction is sent; the sampling is specifically that the image f (x, y) is digitally sampled, and a matrix g (i, j) is formed by discrete quantities to represent two stacks of arrays:
where g (i, j) represents each pixel element, i represents a row, j represents a column, m represents an mth pixel element of the row, n represents an nth pixel element of the column, and g (i, j) represents a (i, j) point as a sampling point gray value; the quantization is specifically a conversion of the sampled gray value from an analog image to a pixel dispersion, and the pixel dispersion range of the gray value is 0 to 255;
executing a signal source monitoring step, setting image monitoring time, associating the signal source monitoring item based on the identification code, carrying out video stream information screenshot on the signal source to be monitored according to the image monitoring time and the associated signal source monitoring item, converting the screenshot into a second image through sampling and quantization, carrying out feature attention area definition, feature attention object identification and feature change condition comparison judgment on the first image and the second image according to the signal source monitoring item, and sending an image feature change prompt instruction if the feature change condition is met by the comparison judgment; if the comparison judgment does not accord with the characteristic change condition, continuing to monitor the signal source;
and switching and displaying signal sources, namely receiving the change prompt instruction, identifying the signal source monitoring item, switching and displaying the corresponding signal source video stream information according to the identification code in the signal source monitoring item.
2. A display method according to claim 1, further comprising: and setting a priority monitoring level for the signal source monitoring item.
3. A display device based on the display method according to any one of claims 1 to 2, characterized by comprising:
the signal source input interface is used for acquiring a plurality of signal sources and receiving the video stream information of the signal sources, and adopts one or more of an MIPI interface, a USB port, a TYPE-C interface, an HDMI interface, a VGA interface, a DVI interface and a connector;
the interface identification coding module is used for each signal source identification code, is connected with the signal source input interface and is used for identifying the signal source input interface identification code;
the monitoring item self-defining module is used for self-defining and setting a characteristic attention area, a characteristic attention object and a characteristic change condition, the monitoring item self-defining module reads the identification code through the interface identification code module, the monitoring item self-defining module is provided with a storage unit, and the identification code is associated with a signal source monitoring item and is stored in the storage unit;
the monitoring analysis processing module is used for setting image monitoring time and monitoring the video stream information image characteristic change of the signal source, is in communication connection with the monitoring item self-defining module and receives the signal source monitoring item sent by the monitoring item self-defining module;
the signal source switching display module is used for switching the signal source and is in communication connection with the monitoring analysis processing module;
the display output interface is used for displaying the signal source video stream information and is controlled and connected by the signal source switching display module, and comprises a VGA interface, a DVI interface, a TYPE-C interface and an HDMI interface; the number of TYPE-C interfaces is two;
the communication module is used for sending an image characteristic change prompt instruction, and is in communication connection with the monitoring analysis processing module, and comprises a serial port interface, an Ethernet interface, a WIFI interface and a 4G/5G interface.
4. A display device according to claim 3, wherein the monitoring analysis processing module is provided with a video stream frame image acquisition unit and a similarity comparison unit, the video stream frame image acquisition unit is used for acquiring a comparison source image and a target monitoring image, the similarity comparison unit is used for calculating similarity between the comparison source image and the target monitoring image, comparing the calculated similarity with a similarity threshold, if the calculated similarity is larger than the similarity threshold, determining that the comparison source image and the target monitoring image are consistent and do not meet a monitoring feature change condition, otherwise determining that the transmission characteristics of the comparison source image and the target monitoring image change and meet a monitoring feature change condition.
5. A display device according to claim 3, wherein the monitoring item customization module is configured in a mobile terminal, the mobile terminal is in communication connection with the communication module, and the mobile terminal is a mobile phone or a tablet computer.
6. A display screen comprising a backlight module and a display device according to any one of claims 3 to 5.
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