CN112286474B

CN112286474B - Image processing method, device and system and display controller

Info

Publication number: CN112286474B
Application number: CN202011173136.4A
Authority: CN
Inventors: 李东林; 蓝明华; 黄璐璐; 朱熠良
Original assignee: Hangzhou Hikvision Digital Technology Co Ltd
Current assignee: Hangzhou Hikvision Digital Technology Co Ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2023-03-14
Anticipated expiration: 2040-10-28
Also published as: CN112286474A

Abstract

The embodiment of the invention provides an image processing method, an image processing device, an image processing system and a display controller, wherein the method is applied to a target controller in an image display system, the image display system comprises an information source device and a spliced display screen, the spliced display screen comprises a plurality of display units, each display unit is provided with one corresponding display controller, the target controller is one of the display controllers, and the method comprises the following steps: acquiring an original image sent by information source equipment; intercepting a sub-region image from the original image based on a display region parameter acquired in advance, wherein the display region parameter is used for identifying a region in the original image required to be displayed by a display unit corresponding to a target controller; and sending the sub-region image to a display unit corresponding to the target controller so as to enable the display unit to display the sub-region image. Each display controller can process the original image according to the display area parameters acquired in advance, and the image can be spliced and displayed without configuring a splicing controller.

Description

Image processing method, device and system and display controller

Technical Field

The invention relates to the technical field of spliced screen display, in particular to an image processing method, device and system and a display controller.

Background

At present, the spliced screen is widely applied to monitoring systems of railways, airports and ports, intelligent traffic monitoring systems, video conferences, large-scale performances, advertisement demonstration and other occasions. The spliced screen is a spliced display screen formed by a plurality of display units, and each display unit displays a part of image, so that the spliced display screen can display a complete image picture. The tiled screen may include a liquid crystal tiled screen, a Light Emitting Diode (LED) tiled screen, a plasma tiled screen, and the like.

As shown in fig. 1, a tiled-screen display system generally includes a source device 110, a tiled controller 120, a plurality of display controllers 130, and a tiled screen 140, one display element for each display controller 130. The source device 110 is connected to the splicing controller 120, the splicing controller 120 is connected to the plurality of display controllers 130, and the plurality of display controllers 130 are connected to the corresponding display units.

In the process of image display, the source device 110 sends the original image to the splicing controller 120, and the splicing controller 120 calculates image areas in the original image to be displayed by each display controller 130 connected thereto, and further intercepts corresponding image areas, and sends the intercepted image areas to the corresponding display controllers 130. After receiving the image area, each display controller 130 performs response processing according to the working state of the mosaic screen, and then sends the processed image to the corresponding display unit, so that the display unit displays the received image, that is, the display of the image is completed, and a complete image picture can be displayed in the mosaic screen. In the splicing screen display system, the splicing display of the images can be completed only by configuring the splicing controller, the hardware cost is high, and the splicing display of the images cannot be completed under the condition that the splicing controller is not configured conditionally.

Disclosure of Invention

The embodiment of the invention aims to provide an image processing method, an image processing device, an image processing system and a display controller, so that image mosaic display can be completed without configuring a mosaic controller. The specific technical scheme is as follows:

in a first aspect, an embodiment of the present invention provides an image processing method, which is applied to a target controller in an image display system, where the image display system includes an information source device and a tiled display screen, the tiled display screen includes a plurality of display units, each display unit has a corresponding display controller, and the target controller is one of the display controllers, and the method includes:

acquiring an original image sent by the information source equipment;

intercepting a sub-region image from the original image based on a display region parameter acquired in advance, wherein the display region parameter is used for identifying a region in the original image required to be displayed by a display unit corresponding to the target controller;

and sending the sub-region image to a display unit corresponding to the target controller so as to enable the display unit to display the sub-region image.

Optionally, before the step of capturing a sub-region image from the original image based on the pre-acquired display region parameter, the method further includes:

acquiring a preset display mode identifier;

and when the display mode represented by the display mode identifier is a full-screen display mode, executing the step of intercepting a sub-region image from the original image based on the pre-acquired display region parameters, wherein the full-screen display mode is a display mode in which the content displayed by the spliced display screen is only the same image content.

Optionally, in a case that the display mode indicated by the display mode identifier is a split-screen display mode, the method further includes:

acquiring split-screen display area information and split-screen area parameters, wherein the split-screen display mode is a display mode in which the contents displayed by the spliced display screen comprise the same image content and split-screen content, and the split-screen display area information is used for identifying the split-screen content required to be displayed by the display unit corresponding to the target controller; the split screen area parameter is used for identifying a display area of the split screen content in the display unit;

generating a split screen image according to the split screen area parameters and the split screen display area information;

and sending the split screen image to a display unit corresponding to the target controller so that the display unit displays the split screen image.

Optionally, the step of sending the split-screen image to a display unit corresponding to the target controller includes:

when the content to be displayed by the display unit corresponding to the target controller comprises the sub-region image and the split-screen image, splicing the sub-region image and the split-screen image according to the position relation of the display region in the display unit corresponding to the target controller, and sending the spliced image to the display unit corresponding to the target controller;

or the like, or a combination thereof,

when the content to be displayed by the display unit corresponding to the target controller comprises the sub-region image and the split-screen image, sending the split-screen image and a first display position identifier to the display unit corresponding to the target controller, so that the display unit displays the split-screen image in the display region corresponding to the first display position identifier and displays the sub-region image in the display region corresponding to the second display position identifier;

the first display position mark is used for marking a display area of the split screen image in the display unit, the second display position mark is used for marking the display area of the sub-area image in the display unit, and the second display position mark is sent to the display unit by the target controller.

Optionally, one of the display controllers is connected to the source device, and the other display controllers except the one of the display controllers are sequentially connected in series and then connected to the one of the display controllers;

the step of obtaining the original image sent by the source device includes:

under the condition that the target controller is connected with the information source equipment, receiving an original image sent by the information source equipment, and sending the original image to a next display controller;

and under the condition that the target controller is not connected with the information source equipment, receiving an original image sent by a previous display controller, and sending the original image to a next display controller.

Optionally, the image display system further includes a distributor, where the distributor is connected to the source device and each of the display controllers respectively;

the step of acquiring the original image sent by the source device includes:

and receiving an original image sent by the distributor, wherein the original image is sent to the distributor by the source equipment.

Optionally, the step of capturing a sub-region image from the original image based on the pre-acquired display region parameter includes:

based on the pre-acquired display area parameters, intercepting the area identified by the display area parameters from the original image to obtain a sub-area image;

zooming the sub-region image according to the size of the region in the original image required to be displayed by the display unit corresponding to the target controller and the size of the display region of the display unit corresponding to the target controller;

the step of sending the sub-region image to a display unit corresponding to the target controller includes:

and sending the zoomed sub-region image to a display unit corresponding to the target controller.

In a second aspect, an embodiment of the present invention provides an image processing apparatus applied to a target controller in an image display system, where the image display system includes a source device and a tiled display screen, the tiled display screen includes a plurality of display units, each display unit has a corresponding display controller, and the target controller is one of the display controllers, the apparatus includes:

the image acquisition module is used for acquiring an original image sent by the information source equipment;

the image processing module is used for intercepting a sub-region image from the original image based on a display region parameter acquired in advance, wherein the display region parameter is used for identifying a region in the original image required to be displayed by a display unit corresponding to the target controller;

and the image sending module is used for sending the sub-region image to a display unit corresponding to the target controller so as to enable the display unit to display the sub-region image.

Optionally, the identifier obtaining module is configured to obtain a preset display mode identifier before intercepting a sub-region image from the original image based on a pre-obtained display region parameter; the triggering module is used for triggering the image processing module under the condition that the display mode represented by the display mode identifier is a full-screen display mode, wherein the full-screen display mode is a display mode that the contents displayed by the spliced display screen are only the same image contents; or the like, or, alternatively,

the device further comprises:

the split screen parameter acquisition module is used for acquiring split screen display area information and split screen area parameters under the condition that the display mode represented by the display mode identifier is a split screen display mode, wherein the split screen display mode is a display mode that the contents displayed by the spliced display screen comprise the same image content and the split screen content, and the split screen display area information is used for identifying the split screen content required to be displayed by the display unit corresponding to the target controller; the split screen area parameter is used for identifying a display area of the split screen content in the display unit; the split-screen image generation module is used for generating a split-screen image according to the split-screen area parameters and the split-screen display area information; the split-screen image sending module is used for sending the split-screen image to a display unit corresponding to the target controller so as to enable the display unit to display the split-screen image; or the like, or, alternatively,

the split-screen image sending module includes:

the split-screen image sending unit is used for splicing the subregion image and the split-screen image according to the position relation of the display area in the display unit corresponding to the target controller under the condition that the content required to be displayed by the display unit corresponding to the target controller comprises the subregion image and the split-screen image, and sending the spliced image to the display unit corresponding to the target controller; or, the split-screen image and the first display position identifier are sent to a display unit corresponding to the target controller, so that the display unit displays the split-screen image in a display area corresponding to the first display position identifier, and simultaneously displays the sub-area image in a display area corresponding to the second display position identifier; the first display position mark is used for marking a display area of the split-screen image in the display unit, the second display position mark is used for marking a display area of the sub-area image in the display unit, and the second display position mark is sent to the display unit by the target controller; or the like, or, alternatively,

one display controller of the plurality of display controllers is connected with the information source equipment, and the other display controllers except the display controller of the plurality of display controllers are sequentially connected in series and then connected with the display controller; the image acquisition module includes:

the first acquisition unit is used for receiving an original image sent by the information source equipment and sending the original image to a next display controller under the condition that the target controller is connected with the information source equipment; or, the second obtaining unit is configured to receive an original image sent by a previous display controller and send the original image to a next display controller when the target controller is not connected to the source device; or the like, or, alternatively,

the image display system further comprises a distributor, wherein the distributor is respectively connected with the information source equipment and each display controller; the image acquisition module includes:

a third obtaining unit, configured to receive an original image sent by the distributor, where the original image is sent to the distributor by the source device; or the like, or, alternatively,

the image processing module includes:

the intercepting unit is used for intercepting the area identified by the display area parameter from the original image based on the display area parameter acquired in advance to obtain a sub-area image; the zooming unit is used for zooming the sub-region image according to the size of the region in the original image required to be displayed by the display unit corresponding to the target controller and the size of the display region of the display unit corresponding to the target controller;

the image transmission module includes:

and the image sending unit is used for sending the zoomed sub-region image to the display unit corresponding to the target controller.

In a third aspect, an embodiment of the present invention provides an image display system, where the image display system includes an information source device and a tiled display screen, the tiled display screen includes a plurality of display units, and each display unit has a corresponding display controller, where:

the source device is used for sending an original image to each display controller;

each display controller is used for receiving the original image; intercepting a subarea image from the original image based on a display area parameter acquired in advance; sending the sub-region image to a corresponding display unit, wherein the display region parameter is used for identifying a region in the original image required to be displayed by the display unit corresponding to the target controller;

each display unit is used for receiving the sub-area image sent by the corresponding display controller and displaying the sub-area image.

Optionally, each display controller is specifically configured to obtain a preset display mode identifier before intercepting a sub-region image from the original image based on a display region parameter obtained in advance; and under the condition that the display mode represented by the display mode identification is a full-screen display mode, intercepting a sub-region image from the original image based on a display region parameter acquired in advance, wherein the full-screen display mode is a display mode in which the content displayed by the spliced display screen is only the same image content.

Optionally, each display controller is further configured to, when the display mode indicated by the display mode identifier is a split-screen display mode, obtain split-screen display area information and split-screen area parameters, where the split-screen display mode is a display mode in which the content displayed on the tiled display screen includes the same image content and the split-screen content, and the split-screen display area information is used to identify the split-screen content that needs to be displayed by the display unit corresponding to the target controller; the split screen area parameter is used for identifying a display area of the split screen content in the display unit; generating a split screen image according to the split screen area parameters and the split screen display area information; and sending the split screen image to a display unit corresponding to the target controller so that the display unit displays the split screen image.

Optionally, each display controller is specifically configured to, when the content that needs to be displayed by the display unit corresponding to the target controller includes the sub-region image and the split-screen image, splice the sub-region image and the split-screen image according to a position relationship of a display region in the display unit corresponding to the target controller, and send the spliced image to the display unit corresponding to the target controller; or, under the condition that the content to be displayed by the display unit corresponding to the target controller includes the sub-region image and the split-screen image, sending the split-screen image and the first display position identifier to the display unit corresponding to the target controller, so that the display unit displays the split-screen image in the display region corresponding to the first display position identifier, and simultaneously displays the sub-region image in the display region corresponding to the second display position identifier;

each display controller is specifically configured to receive an original image sent by the information source device and send the original image to a next display controller when the display controller is connected to the information source device; and under the condition of not being connected with the source equipment, receiving the original image sent by the last display controller and sending the original image to the next display controller.

each display controller is specifically configured to receive an original image sent by the distributor, where the original image is sent to the distributor by the source device.

Optionally, each display controller is specifically configured to intercept, from the original image, an area identified by a display area parameter based on a display area parameter acquired in advance, so as to obtain a sub-area image; zooming the sub-region image according to the size of the region in the original image required to be displayed by the display unit corresponding to the target controller and the size of the display region of the display unit corresponding to the target controller; and sending the zoomed sub-region image to a display unit corresponding to the target controller.

In a fourth aspect, an embodiment of the present invention provides a display controller, including a processor, a communication interface, a memory, and a communication bus, where the processor and the communication interface complete communication between the memory and the processor through the communication bus;

a memory for storing a computer program;

a processor adapted to perform the method steps of any of the above first aspects when executing a program stored in the memory.

In a fifth aspect, the present invention provides a computer-readable storage medium, in which a computer program is stored, and the computer program, when executed by a display controller, implements the method steps of any one of the above first aspects.

In the scheme provided by the embodiment of the invention, the image display system comprises an information source device and a spliced display screen, wherein the spliced display screen comprises a plurality of display units, each display unit is provided with a corresponding display controller, a target controller is one of the display controllers, the target controller can acquire an original image sent by the information source device, and a sub-region image is intercepted from the original image based on a display region parameter acquired in advance, wherein the display region parameter is used for identifying a region in the original image required to be displayed by the display unit corresponding to the target controller, and then the sub-region image is sent to the display unit corresponding to the target controller, so that the display unit displays the sub-region image. Each display controller can process the original image according to the display area parameters acquired in advance, and then sends the processed image to the corresponding display unit, each display unit can display the received image, and then the complete picture corresponding to the original image can be displayed on the splicing display screen, and the splicing display of the image is realized under the condition that the splicing controller is not required to be configured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic diagram of a tiled display system according to the related art;

fig. 2 is a schematic structural diagram of an image display system according to an embodiment of the present invention;

FIG. 3 is a flowchart of an image processing method according to an embodiment of the present invention;

FIG. 4 is a flow chart of a split-screen display mode according to the embodiment shown in FIG. 3;

FIG. 5 is a diagram illustrating a split-screen display effect according to the embodiment shown in FIG. 4;

FIG. 6 is a schematic diagram of a split-screen display according to the embodiment shown in FIG. 4;

FIG. 7 is a schematic diagram of a connection mode of a display controller according to the embodiment shown in FIG. 3;

FIG. 8 is another schematic diagram of the connection of the display controller according to the embodiment of FIG. 3;

fig. 9 is a schematic structural diagram of an image processing apparatus according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a display controller according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to finish the image mosaic display and reduce the hardware cost of an image display system under the condition of not configuring a mosaic controller, the embodiment of the invention provides an image processing method, an image processing device, an image processing system, a display controller and a computer readable storage medium.

The image processing method provided by the embodiment of the invention can be applied to any display controller in an image display system. As shown in fig. 2, an image display system provided by an embodiment of the present invention may include: a source device 210, and a tiled display screen including a plurality of display elements 220 (4 display elements are taken as an example in fig. 2), each display element 220 having a corresponding display controller 230. The image display system provided by the embodiment of the invention does not need to be provided with a splicing controller. The source device 210 may send the original image to each display controller 230, and each display controller 230 may process the received original image, and then send the processed image to the corresponding display unit 220, and the plurality of display units 220 respectively display the received images, so that a complete picture corresponding to the original image may be presented in the tiled display screen, and the tiled display of the images is implemented.

First, an image processing method according to an embodiment of the present invention will be described below. The image processing method provided by the embodiment of the present invention may be applied to a target controller, where the target controller is one of the display controllers, that is, each display controller may process a received original image by using the image processing method provided by the embodiment of the present invention.

As shown in fig. 3, an image processing method, the method comprising:

s301, acquiring an original image sent by the source equipment;

s302, intercepting a subregion image from the original image based on a display region parameter acquired in advance;

the display area parameter is used for identifying an area in the original image, which is required to be displayed by a display unit corresponding to the target controller.

And S303, sending the sub-region image to a display unit corresponding to the target controller so that the display unit displays the sub-region image.

As can be seen, in the scheme provided in the embodiment of the present invention, the target controller may obtain an original image sent by the source device, and intercept the sub-region image from the original image based on a display region parameter obtained in advance, where the display region parameter is used to identify a region in the original image that needs to be displayed by the display unit corresponding to the target controller, and then send the sub-region image to the display unit corresponding to the target controller, so that the display unit displays the sub-region image. Each display controller can process the original image according to the display area parameters acquired in advance, and then sends the processed image to the corresponding display unit, each display unit can display the received image, and then the complete picture corresponding to the original image can be displayed on the splicing display screen, and the splicing display of the image is realized under the condition that the splicing controller is not required to be configured.

When image splicing display is needed, the source device can send an original image to the target controller. The original image may be any image that needs to be displayed on the tiled display screen, for example, the original image may be a monitoring image, an advertisement image, or a frame image in a video, and the like, which is not limited herein.

Thus, in step S301, the target controller can acquire the original image transmitted by the source device. Since each display unit needs to display a part of the area in the original image, and the image areas that each display unit needs to display are different and need to be able to be spliced together to obtain the complete picture corresponding to the original image, in order to be able to accurately determine the area in the original image that each display unit needs to display, the display area parameters of the area in the original image that each display unit needs to display may be determined in advance according to the resolution of the display unit, the position of the corresponding area in the complete picture displayed by the tiled display device, and the size of the original image.

The display area parameter is a parameter for identifying an area in the original image that needs to be displayed by the display unit corresponding to each display controller. Since the area in the original image that each display unit needs to display is generally a rectangular area, in one embodiment, the display area parameters may include the coordinates of the top left corner point of the area in the original image that the display unit needs to display, and the width and height of the area. In another embodiment, the display region parameters may include coordinates of four corner points of a region in the original image that the display unit is required to display. Of course, the parameters may be other parameters that can uniquely determine the area in the original image that the display unit needs to display, and are not specifically limited herein.

After acquiring the original image, the target controller may intercept the sub-region image from the original image based on the pre-acquired display region parameter, that is, execute the above step S302. The target controller may obtain a display area parameter corresponding to the target controller in advance, and after obtaining the original image, capture a sub-area image from the original image based on the display area parameter, where the sub-area image is an area in the original image that needs to be displayed by the display unit corresponding to the target controller.

For example, as shown in fig. 2, the target controller is the first display controller 230 from left to right, and the corresponding display unit is the display unit at the upper left corner of the tiled display screen, so that the display area parameter of the area in the original image that needs to be displayed by the display unit 220 at the upper left corner can be predetermined, and since there are 4 display units, and the area corresponding to the display unit 220 at the upper left corner is located at the upper left corner of the entire tiled display screen, the display area corresponding to the display unit 220 at the upper left corner can be determined to be the upper left corner area of the original image, and the size is 1/4 of the size of the original image, so the display area parameter corresponding to the display unit 220 at the upper left corner can be determined according to the size of the original image. And then after the target controller acquires the original image, the original image can be intercepted according to the display area parameters to obtain an area of 1/4 of the upper left corner of the original image as a sub-area image.

Aiming at the condition that the sizes of the original image and the spliced display screen are different, the target controller intercepts the sub-region image from the original image based on the pre-acquired display region parameters, and then performs scaling processing on the sub-region image according to the relation between the sizes of the original image and the spliced display screen, so that the size of the scaled sub-region image is in accordance with the size of the corresponding display unit. For example, the ratio of the size of the original image to the size of the tiled display screen is 1:5, the target controller may magnify the sub-region image by 5 times to obtain a magnified sub-region image.

Furthermore, the target controller can send the sub-region image to the display unit corresponding to the target controller, and the display unit can display the sub-region image after receiving the sub-region image. Meanwhile, other display controllers can also determine the corresponding sub-region images in the above manner, and then send the sub-region images to the corresponding display units, so that all the display units can display the received sub-region images, and a complete picture corresponding to the original image can be displayed in the spliced display screen.

Therefore, the image can be spliced and displayed without configuring a splicing controller. In addition, each display controller can intercept the sub-region images from the original image based on the display region parameters acquired in advance, and the display region parameters are used for identifying the region in the original image required to be displayed by the display unit corresponding to the target controller, so that no gap exists between the sub-region images, the complete picture corresponding to the original image can be seamlessly spliced and displayed in the spliced display screen, and the seamless spliced full-screen display is realized.

In an embodiment, the image display system may further include a receiving card device, and the display controller may transmit the sub-region image to the receiving card device, and the receiving card device may light up each display unit to cause each display unit to display the corresponding sub-region image. The card receiving device may be any card receiving device in the field of image mosaic display, and the embodiment of the present invention is not specifically limited and described herein.

As an implementation manner of the embodiment of the present invention, before the step of capturing the sub-region image from the original image based on the pre-acquired display region parameter, the method may further include:

acquiring a preset display mode identifier;

and under the condition that the display mode represented by the display mode identification is a full-screen display mode, executing the step of intercepting a subarea image from the original image based on the display area parameters acquired in advance.

In addition to the full-screen display mode, split-screen display may be required in some scenes, where the full-screen display mode is a display mode in which the content displayed by the tiled display screen is only the same image content, and the split-screen display mode is a display mode in which the content displayed by the tiled display screen includes the same image content and split-screen content, that is, split-screen display is a mode in which one or more regions are divided in the display screen of the tiled display screen for displaying content different from the original image, and the rest of the regions are used for displaying content of the original image. In the split-screen display mode, the content displayed by the spliced display screen and different from the original image is the split-screen content.

In order to ensure that the content of the original image can be completely displayed in the tiled display screen, the split-screen display area is generally located at the edge portion of the tiled display screen. The bar screen display is one of split screen display, i.e. a split screen area is displayed at the top or the bottom of the spliced display screen, and is generally used for displaying text information such as subtitles and broadcast messages.

In order to conveniently determine whether full-screen display or split-screen display is required currently, a display mode identifier may be set, and is used to identify that the display mode is a full-screen display mode or a split-screen display mode, specifically, characters such as numbers, letters, symbols, and the like, and is not specifically limited herein.

In one embodiment, the display mode identifier may be issued to the target controller by a control device such as a client. In another embodiment, the display mode identification may be sent by the source device to the destination controller along with the original image. And then after the target controller acquires the display mode identifier, whether the display mode represented by the display mode identifier is a full-screen display mode or a split-screen display mode can be determined.

If the display mode represented by the display mode identifier is a full-screen display mode, the target controller may execute the step of intercepting the sub-region image from the original image based on the pre-acquired display region parameter, so as to perform full-screen display.

As an implementation manner of the embodiment of the present invention, if the display manner indicated by the display manner identifier is a split-screen display manner, as shown in fig. 4, the method may further include:

s401, acquiring split screen display area information and split screen area parameters;

when the split-screen display is performed, the specific content of the split-screen display and the split-screen display area need to be determined, so that the target controller can acquire the split-screen display area information and the split-screen area parameters. The split-screen display area information is used for identifying split-screen content required to be displayed by a display unit corresponding to the target controller. The split screen area parameter is used for identifying a display area of the split screen content in the display unit.

The display area of the split screen content can be a partial area corresponding to the first row of display units in the spliced display screen, and an effect of displaying the split screen content on the top of the spliced display screen is achieved. The split screen display can also be used for left and right vertical screen display, namely, partial areas corresponding to a left column of display units and a right column of display units in the spliced display screen, and the left and right split screen areas can be symmetrical or asymmetrical. The split screen content can be elements such as icons, dynamic subtitles and dials, the arrangement position can be set according to actual display requirements, and the display area, the split screen content and the arrangement mode of the split screen content are not specifically limited.

As an implementation manner, the split-screen display area information and the split-screen area parameter may be set according to actual display needs, and are issued to the target controller by the control device such as the client. Of course, it is reasonable that the target controller can calculate the target according to the actual display requirement.

Since the split screen area is generally a rectangular area, in one embodiment, the split screen area parameters may include the coordinates of the upper left corner point of the split screen area that the display unit needs to display, and the width and height of the area. In another embodiment, the parameters of the split screen area may include coordinates of four corner points of the split screen area that the display unit needs to display.

S402, generating a split screen image according to the split screen area parameters and the split screen display area information;

after the split-screen display area information and the split-screen area parameters are obtained, the split-screen display area information can represent split-screen contents required to be displayed by a display unit corresponding to the target controller, and the split-screen parameters can represent display areas of the split-screen contents in a split-screen manner, so that the size of the display area of the split-screen contents can be determined according to the split-screen parameters, and the target controller can generate split-screen images based on the split-screen area parameters and the split-screen display area information.

And S403, sending the split-screen image to a display unit corresponding to the target controller, so that the display unit displays the split-screen image.

Furthermore, the target controller can display the split screen image to the display unit corresponding to the target controller, and the display unit can receive the split screen image sent by the target controller, so that the split screen image is displayed, and the split screen image can be displayed in the spliced display screen, so that the effect of displaying the split screen content is achieved.

Since some display units may not need to display split-screen content, for the display controller corresponding to such a display unit, it is only necessary to process the original image according to the image processing method of the embodiment shown in fig. 3, and further, it is only necessary to make such a display unit display the sub-area image corresponding to the original image.

Aiming at the condition of bar screen display, each display controller only needs to process the corresponding split screen content information to generate a corresponding split screen image, and the generation of the split screen images is not influenced mutually, so that the overlong split screen content can be displayed at the top or the bottom of the spliced display screen, and the overlong bar screen display is realized.

For example, as shown in the schematic diagram of the split-screen display effect shown in fig. 5, the top, the left side, and the right side of the tiled display screen respectively display the split-screen content, specifically, the top can display welcome words, the left side can display a dial and poetry characters, and the right side can display information such as a duty list. And the middle part of the spliced display screen displays a content picture corresponding to the original image sent by the information source equipment.

As can be seen, in this embodiment, when the display mode indicated by the display mode identifier is a split-screen display mode, the target display may obtain split-screen display area information and split-screen display area parameters, generate a split-screen image according to the split-screen display area parameters and the split-screen display area information, and then send the split-screen image to the display unit corresponding to the target controller, so that the display unit displays the split-screen image. Therefore, the split-screen content can be displayed when split-screen display is needed, and other hardware equipment does not need to be added. And the full-screen display mode and the split-screen display mode can be switched according to actual requirements, so that two requirements of the full-screen display mode and the split-screen display mode are met. Because each display controller processes the corresponding split screen content information according to the split screen area parameters to generate the corresponding split screen image, point-to-point split screen display can be realized, and the effect of high-definition display of the split screen content is achieved.

Since there may be some display units that need to display both the split-screen content and part of the content of the original image, for example, as shown in the schematic diagram of the split-screen display shown in fig. 6, the tiled display screen includes 9 display units, and the top, left, and right sides of the tiled display screen respectively display the split-screen content, then the display unit 610, the display unit 620, the display unit 630, the display unit 640, the display unit 660, the display unit 670, and the display unit 690 all need to display the split-screen content and part of the content of the original image. The display unit 650 and the display unit 680 need only display a part of the contents of the original image.

As an implementation of the embodiment of the present invention, when the content to be displayed by the display unit corresponding to the target controller includes a sub-region image and a split-screen image, the step of sending the split-screen image to the display unit corresponding to the target controller at least includes the following two implementations:

the first embodiment: and splicing the sub-region images and the split-screen images according to the position relation of the display regions in the display units corresponding to the target controller, and sending the spliced images to the display units corresponding to the target controller.

Because the content required to be displayed by the display unit corresponding to the target controller comprises both the sub-region image and the split-screen image, the target controller can splice the region image and the split-screen image according to the position relationship of the region image and the split-screen image in the display unit corresponding to the target controller to obtain a spliced image in order to facilitate the display of the display unit. And then the target controller can send the spliced image to the corresponding display unit, so that the display unit can display the spliced image, and the effect of displaying the sub-region image and the split-screen image can be achieved.

For example, for the target controller corresponding to the display unit 640 shown in fig. 6, the split-screen image is on the left side of the sub-region image, so the target controller may determine the position relationship between the split-screen image and the sub-region image according to the width, height, vertex point coordinates of the split-screen image, the width, height, vertex point coordinates of the sub-region image, and the like, and then splice the two images to obtain a spliced image.

The second embodiment: and sending the split-screen image and the first display position identifier to a display unit corresponding to the target controller, so that the display unit displays the split-screen image in a display area corresponding to the first display position identifier, and displays the sub-area image in a display area corresponding to the second display position identifier.

In this embodiment, the target controller may not splice the sub-region image and the split-screen image, and the target controller may determine the second display position identifier and the first display position identifier according to the display region parameter and the split-screen region parameter, respectively, where the first display position identifier is used to identify a display region of the split-screen image in the display unit, and the second display position identifier is used to identify a display region of the sub-region image in the display unit.

Furthermore, the target controller can send the split-screen image and the first display position identifier to the display unit corresponding to the target controller, so that the display unit can display the split-screen image in the display area corresponding to the first display position identifier and display the sub-area image in the display area corresponding to the second display position identifier, and the effect of displaying the sub-area image and the split-screen image can be achieved. The second display position identifier may be sent to the display unit while the target controller sends the first display position identifier to the display unit. It may also be reasonable to send the first display position identification to the display unit before or after the target controller sends it to the display unit.

As an embodiment, if the display unit does not have a function of recognizing the first display position indicator and the second display position indicator, the image display system may further include a receiving card device, the display controller may transmit the first display position indicator, the second display position indicator, the sub-area image, and the split-screen image to the receiving card device, and the receiving card device may light the display unit to display the split-screen image in accordance with the display area indicated by the first display position indicator, while lighting the display unit to display the sub-area image in accordance with the display area indicated by the second display position indicator.

As can be seen, in this embodiment, under the condition that the content that needs to be displayed by the display unit corresponding to the target controller includes the sub-region image and the split-screen image, the sub-region image and the split-screen image may be spliced according to the position relationship of the display region in the display unit corresponding to the target controller, and the spliced image may be sent to the display unit corresponding to the target controller, or the split-screen image and the first display position identifier may be sent to the display unit corresponding to the target controller, so that the display unit can both display the sub-region image and the split-screen image regardless of which kind is used, thereby achieving the split-screen display effect.

As an implementation manner of the embodiment of the invention, one display controller of the plurality of display controllers may be connected to the source device, and the other display controllers of the plurality of display controllers except the one display controller are sequentially connected in series and then connected to the one display controller. For example, as shown in fig. 7, assuming that the image display system includes 9 display controllers, the display controller 710 may be connected to the source device 700, and the display controllers other than the display controller 710 may be connected to the display controller 710 after being sequentially connected in series.

For the above situation, the step of acquiring the original image sent by the source device may include:

under the condition that the target controller is connected with the information source equipment, receiving an original image sent by the information source equipment, and sending the original image to a next display controller; and when the target controller is not connected with the information source equipment, receiving an original image sent by the previous display controller, and sending the original image to the next display controller.

In order to ensure that each display controller can acquire the original image, each display controller may have an output interface, that is, after each display controller accesses the image signal, two paths of signals may be output. Specifically, one path of signal is used for outputting a sub-area image and/or a split-screen image obtained by self-processing, and the other path of signal loops out for image processing of the next display controller, that is, outputting an original image to the next display controller. Here, the "next display controller" in this embodiment is a next display controller determined in accordance with the connection relationship.

Therefore, under the condition that the target controller is connected with the information source equipment, the target controller can receive the original image sent by the information source equipment, process the original image to obtain a corresponding sub-area image, and send the original image to the next display controller. The next display controller can also receive the original image, process the original image to obtain the corresponding sub-region image, and send the original image to the next display controller, and so on, and each display controller can obtain the original image.

Under the condition that the target controller is not connected with the information source equipment, the target controller can receive the original image sent by the previous display controller, process the original image to obtain a corresponding sub-area image, and continuously send the original image to the next display controller.

As an implementation manner of the embodiment of the invention, in the case that the display manner is split-screen display, a plurality of display controllers may also be connected to the source device in the manner described above. The split-screen display area information and the split-screen area parameters can be sent according to the sending mode of the original image, so that each display controller can acquire the split-screen display area information and the split-screen area parameters, and the description is omitted here.

As can be seen, in this embodiment, one display controller of the multiple display controllers is connected to the source device, and the other display controllers of the multiple display controllers except the one display controller are sequentially connected in series and then connected to the one display controller, so that when the target controller is connected to the source device, the target controller can receive the original image sent by the source device and send the original image to the next display controller; in the case where the target controller is not connected to the source device, the original image transmitted from the previous display controller may be received and transmitted to the next display controller, so that each display controller may receive the original image.

As an implementation of the embodiment of the invention, the image display system may further include a distributor connected to the source device and each of the display controllers, respectively. The distributor is a controller which can transmit one or more video and audio signals to one or more devices respectively. In the above image display system, one or more distributors may be included, which is not particularly limited herein.

For example, as shown in fig. 8, the image display system includes a source device 810, a distributor 820, and 4 display controllers 830, wherein the source device 810 is connected to the distributor 820, and the distributor 820 is connected to the 4 display controllers 830, respectively.

For this case, the step of acquiring the original image transmitted by the source device may include:

and receiving the original image sent by the distributor.

The original image may be sent by the source device to the distributor, which may in turn send the original image to each display controller separately. Each display controller may also receive the original image sent by the dispenser. Next, an image operation may be performed to obtain the set of region images.

As an embodiment of the invention, in the case that the display mode is split-screen display, a plurality of display controllers may be connected to the distributor in the above-mentioned manner. The split-screen display area information and the split-screen area parameters can be sent by the distributor according to the sending mode of the original image, so that each display controller can acquire the split-screen display area information and the split-screen area parameters, and the description is omitted here.

As can be seen, in this embodiment, the image display system may further include a distributor, where the distributor is connected to the source device and each display controller, respectively, so that each display controller may receive the original image sent by the distributor, and further perform image processing on the original image.

As an implementation manner of the embodiment of the present invention, the step of capturing the sub-region image from the original image based on the pre-acquired display region parameter may include:

based on a display area parameter acquired in advance, intercepting an area identified by the display area parameter from the original image to obtain a sub-area image; and zooming the sub-region image according to the size of the region in the original image required to be displayed by the display unit corresponding to the target controller and the size of the display region of the display unit corresponding to the target controller.

After the target controller acquires the original image, the area identified by the display area parameter can be intercepted from the original image based on the display area parameter acquired in advance, so as to obtain the sub-area image. Because the original image sent by the source device is often different from the size of the picture to be displayed by the tiled display screen, the target controller can zoom the sub-region image according to the size of the region in the original image required to be displayed by the display unit corresponding to the target controller and the size of the display region of the display unit corresponding to the target controller, so that the size of the zoomed sub-region image can be in accordance with the size of the region in the original image required to be displayed by the display unit corresponding to the target controller.

For example, the ratio of the size of the original image to the tiled display screen is 1:3, the ratio of the size of the area in the original image required to be displayed by the display unit corresponding to the target controller to the size of the display area of the display unit corresponding to the target controller is 1:3, the target controller may magnify the sub-region image by 3 times to obtain a magnified sub-region image.

Correspondingly, the step of sending the sub-region image to the display unit corresponding to the target controller may include:

After the sub-region image is zoomed, the target display can send the zoomed sub-region image to the display unit corresponding to the target controller, so that the display unit can display the picture which is in accordance with the size of the region in the original image required to be displayed.

As can be seen, in this embodiment, the target controller may intercept, from the original image, the region identified by the display region parameter based on the display region parameter obtained in advance, to obtain a sub-region image, and further, according to the size of the region in the original image that needs to be displayed by the display unit corresponding to the target controller and the size of the display region of the display unit corresponding to the target controller, zoom the sub-region image, and send the zoomed sub-region image to the corresponding display unit, so that the display unit may display a picture that meets the size of the region in the original image that needs to be displayed.

Corresponding to the image processing method, the embodiment of the invention also provides an image processing device. An image processing apparatus according to an embodiment of the present invention is described below.

As shown in fig. 9, an image processing apparatus is applied to a target controller in an image display system, where the image display system includes an information source device and a tiled display screen, the tiled display screen includes multiple display units, each display unit has a corresponding display controller, and the target controller is one of the display controllers, and the apparatus includes:

an image obtaining module 910, configured to obtain an original image sent by the source device;

an image processing module 920, configured to intercept a sub-region image from the original image based on a display region parameter obtained in advance;

An image sending module 930, configured to send the sub-region image to a display unit corresponding to the target controller, so that the display unit displays the sub-region image.

As an implementation manner of the embodiment of the present invention, the apparatus may further include:

the identification acquisition module is used for acquiring a preset display mode identification before intercepting a subarea image from the original image based on a display area parameter acquired in advance;

the triggering module is used for triggering the image processing module when the display mode represented by the display mode identifier is a full-screen display mode, wherein the full-screen display mode is a display mode in which the contents displayed by the spliced display screen are only the same image contents;

the apparatus may further include:

the split screen parameter acquisition module is used for acquiring split screen display area information and split screen area parameters under the condition that the display mode represented by the display mode identifier is a split screen display mode, wherein the split screen display mode is a display mode that the contents displayed by the spliced display screen comprise the same image content and the split screen content, and the split screen display area information is used for identifying the split screen content required to be displayed by the display unit corresponding to the target controller; the split screen area parameter is used for identifying a display area of the split screen content;

the split screen image generation module is used for generating a split screen image according to the split screen area parameters and the split screen display area information;

and the split-screen image sending module is used for sending the split-screen image to a display unit corresponding to the target controller so that the display unit displays the split-screen image.

As an implementation manner of the embodiment of the present invention, the split-screen image sending module may include:

the split-screen image sending unit is used for splicing the sub-region image and the split-screen image according to the position relation of the display region in the display unit corresponding to the target controller under the condition that the content required to be displayed by the display unit corresponding to the target controller comprises the sub-region image and the split-screen image, and sending the spliced image to the display unit corresponding to the target controller; or, the split-screen image and the first display position identifier are sent to a display unit corresponding to the target controller, so that the display unit displays the split-screen image in a display area corresponding to the first display position identifier, and simultaneously displays the sub-area image in a display area corresponding to the second display position identifier;

the first display position mark is used for marking a display area of the split-screen image in the display unit, the second display position mark is used for marking the display area of the sub-area image in the display unit, and the second display position mark is sent to the display unit by the target controller.

As an implementation manner of the embodiment of the present invention, one display controller of the plurality of display controllers is connected to the source device, and the other display controllers except the one display controller of the plurality of display controllers are sequentially connected in series and then connected to the one display controller;

the image acquiring module 910 may include:

the first acquisition unit is used for receiving an original image sent by the information source equipment and sending the original image to a next display controller under the condition that the target controller is connected with the information source equipment; or the like, or, alternatively,

and the second acquisition unit is used for receiving the original image sent by the previous display controller and sending the original image to the next display controller under the condition that the target controller is not connected with the information source equipment.

As an implementation manner of the embodiment of the present invention, the image display system may further include a distributor, where the distributor is connected to the source device and each of the display controllers respectively;

the image acquiring module 910 may include:

and the third acquisition unit is used for receiving the original image sent by the distributor, wherein the original image is sent to the distributor by the source equipment.

As an implementation manner of the embodiment of the present invention, the image processing module 920 may include:

the intercepting unit is used for intercepting the area identified by the display area parameter from the original image based on the display area parameter acquired in advance to obtain a sub-area image;

the zooming unit is used for zooming the sub-region image according to the size of the region in the original image required to be displayed by the display unit corresponding to the target controller and the size of the display region of the display unit corresponding to the target controller;

the image transmission module includes:

Corresponding to the image processing method, the embodiment of the invention also provides an image display system. An image display system according to an embodiment of the present invention is described below.

As shown in fig. 2, an image display system includes a source device 210 and a tiled display screen including a plurality of display units 220, each display unit 220 having a corresponding display controller 230, wherein:

the source device 210, configured to send an original image to each display controller 230;

each display controller 230 for receiving the original image; intercepting a subarea image from the original image based on a display area parameter acquired in advance; sending the sub-region image to a corresponding display unit 220, where the display region parameter is used to identify a region in the original image that needs to be displayed by the display unit corresponding to the target controller;

each display unit 220 is configured to receive the sub-area image sent by the corresponding display controller, and display the sub-area image.

It can be seen that in the scheme provided in the embodiment of the present invention, the image display system includes an information source device and a tiled display screen, the tiled display screen includes a plurality of display units, each display unit has a corresponding display controller, the target controller is one of the display controllers, the target controller can acquire an original image sent by the information source device, and intercept a sub-region image from the original image based on a display region parameter acquired in advance, where the display region parameter is used to identify a region in the original image that needs to be displayed by the display unit corresponding to the target controller, and then send the sub-region image to the display unit corresponding to the target controller, so that the display unit displays the sub-region image. Each display controller can process the original image according to the display area parameters acquired in advance, and then sends the processed image to the corresponding display unit, each display unit can display the received image, and then the complete picture corresponding to the original image can be displayed on the splicing display screen, and the splicing display of the image is realized under the condition that the splicing controller is not required to be configured.

As an implementation manner of the embodiment of the present invention, each display controller 230 may be specifically configured to, based on a display area parameter obtained in advance, obtain a preset display mode identifier before intercepting a sub-area image from the original image; and under the condition that the display mode represented by the display mode identification is a full-screen display mode, intercepting a sub-region image from the original image based on a display region parameter acquired in advance, wherein the full-screen display mode is a display mode in which the content displayed by the spliced display screen is only the same image content.

As an implementation manner of the embodiment of the present invention, each display controller 230 may be further configured to, when the display manner indicated by the display manner identifier is a split-screen display manner, obtain split-screen display area information and split-screen area parameters, where the split-screen display manner is a display manner in which content displayed on the tiled display screen includes the same image content and split-screen content, and the split-screen display area information is used to identify split-screen content that needs to be displayed by a display unit corresponding to the target controller; the split screen area parameter is used for identifying a display area of the split screen content in the display unit; generating a split screen image according to the split screen area parameters and the split screen display area information; and sending the split screen image to a display unit corresponding to the target controller so that the display unit displays the split screen image.

As an implementation manner of the embodiment of the present invention, each display controller 230 may be specifically configured to, under a condition that content required to be displayed by a display unit corresponding to the target controller includes the sub-region image and the split-screen image, splice the sub-region image and the split-screen image according to a position relationship of a display region in the display unit corresponding to the target controller, and send the spliced image to the display unit corresponding to the target controller; or, under the condition that the content to be displayed by the display unit corresponding to the target controller includes the sub-region image and the split-screen image, sending the split-screen image and the first display position identifier to the display unit corresponding to the target controller, so that the display unit displays the split-screen image in the display region corresponding to the first display position identifier, and simultaneously displays the sub-region image in the display region corresponding to the second display position identifier;

As an implementation manner of the embodiment of the present invention, one display controller of the plurality of display controllers 230 is connected to the source device 210, and the other display controllers of the plurality of display controllers 230 except the one display controller are sequentially connected in series and then connected to the one display controller;

each display controller 230 may be specifically configured to, in a case where the source device 210 is connected, receive an original image sent by the source device 210, and send the original image to a next display controller 230; the original image transmitted by the previous display controller 230 is received without being connected to the source device 210, and is transmitted to the next display controller 230.

each display controller may be specifically configured to receive an original image sent by the distributor, where the original image is sent by the source device to the distributor.

As an implementation manner of the embodiment of the present invention, each display controller 230 may be specifically configured to intercept, from the original image, an area identified by a display area parameter based on a display area parameter acquired in advance, so as to obtain a sub-area image; zooming the sub-region image according to the size of the region in the original image required to be displayed by the display unit corresponding to the target controller and the size of the display region of the display unit corresponding to the target controller; and sending the scaled sub-region image to a display unit 220 corresponding to the target controller.

The embodiment of the present invention further provides a display controller, as shown in fig. 10, the display controller may include a processor 1001, a communication interface 1002, a memory 1003 and a communication bus 1004, wherein the processor 1001, the communication interface 1002 and the memory 1003 complete mutual communication through the communication bus 1004,

a memory 1003 for storing a computer program;

the processor 1001 is configured to implement the steps of the image processing method according to any of the embodiments when executing the program stored in the memory 1003.

As can be seen, in the scheme provided in the embodiment of the present invention, the display controller may obtain an original image sent by the source device, and intercept the sub-region image from the original image based on a display region parameter obtained in advance, where the display region parameter is used to identify a region in the original image that needs to be displayed by the display unit corresponding to the display controller, and then send the sub-region image to the display unit corresponding to the display controller, so that the display unit displays the sub-region image. Each display controller can process the original image according to the display area parameters acquired in advance, and then sends the processed image to the corresponding display unit, each display unit can display the received image, and then the complete picture corresponding to the original image can be displayed on the splicing display screen, and the splicing display of the image is realized under the condition that the splicing controller is not required to be configured.

The communication bus mentioned in the above display controller may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus.

The communication interface is used for communication between the display controller and other devices.

The Memory may include a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as at least one disk Memory. Optionally, the memory may also be at least one memory device located remotely from the processor.

The Processor may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but also Digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components.

An embodiment of the present invention further provides a computer-readable storage medium, in which a computer program is stored, and when the computer program is executed by a display controller, the steps of the image processing method described in any of the above embodiments are implemented.

As can be seen, in the solution provided in the embodiment of the present invention, when being executed by the display controller, the computer program may acquire an original image sent by the source device, intercept a sub-region image from the original image based on a display region parameter acquired in advance, where the display region parameter is used to identify a region in the original image that needs to be displayed by the display unit corresponding to the display controller, and then send the sub-region image to the display unit corresponding to the display controller, so that the display unit displays the sub-region image. Each display controller can process the original image according to the display area parameters acquired in advance, and then sends the processed image to the corresponding display unit, each display unit can display the received image, and then the complete picture corresponding to the original image can be displayed on the splicing display screen, and the splicing display of the image is realized under the condition that the splicing controller is not required to be configured.

It should be noted that, for the above-mentioned apparatus, system, display controller and computer-readable storage medium embodiments, since they are substantially similar to the method embodiments, the description is simple, and the relevant points can be referred to the partial description of the method embodiments.

It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

All the embodiments in the present specification are described in a relevant manner, and the same and similar components in all the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims

1. An image processing method applied to a target controller in an image display system, wherein the image display system comprises a source device and a tiled display screen, the tiled display screen comprises a plurality of display units, each display unit has a corresponding display controller, and the target controller is one of the display controllers, and the method comprises the following steps:

acquiring a preset display mode identifier and an original image sent by the information source equipment;

intercepting a sub-region image from the original image based on a display region parameter acquired in advance under the condition that the display mode represented by the display mode identifier is a full-screen display mode, wherein the display region parameter is used for identifying a region in the original image required to be displayed by a display unit corresponding to the target controller, and the full-screen display mode is a display mode in which the content displayed by the spliced display screen is only the same image content;

sending the sub-region image to a display unit corresponding to the target controller so that the display unit displays the sub-region image;

under the condition that the display mode represented by the display mode identification is a split-screen display mode, acquiring split-screen display area information and split-screen area parameters, and generating a split-screen image according to the split-screen area parameters and the split-screen display area information; the split-screen display area information is used for identifying split-screen contents required to be displayed by a display unit corresponding to the target controller; the split screen area parameter is used for identifying a display area of the split screen content in the display unit, and the split screen display mode is a display mode in which the content displayed by the spliced display screen comprises the same image content and the split screen content;

2. The method of claim 1, wherein the step of sending the split-screen image to a display unit corresponding to the target controller comprises:

under the condition that the content needing to be displayed by the display unit corresponding to the target controller comprises the sub-region image and the split-screen image, splicing the sub-region image and the split-screen image according to the position relation of the display region in the display unit corresponding to the target controller, and sending the spliced image to the display unit corresponding to the target controller;

or the like, or, alternatively,

under the condition that the content required to be displayed by the display unit corresponding to the target controller comprises the sub-region image and the split-screen image, sending the split-screen image and a first display position identifier to the display unit corresponding to the target controller, so that the display unit displays the split-screen image in the display region corresponding to the first display position identifier and displays the sub-region image in the display region corresponding to a second display position identifier;

3. The method of any of claims 1-2, wherein one of the plurality of display controllers is connected to the source device, and wherein the other of the plurality of display controllers except the one display controller are connected to the one display controller after being serially connected in sequence;

the step of obtaining the original image sent by the source device includes:

4. The method of any of claims 1-2, wherein the image display system further comprises a distributor, the distributor being connected to the source device and each of the display controllers, respectively;

the step of obtaining the original image sent by the source device includes:

5. The method according to any one of claims 1-2, wherein the step of intercepting a subregion image from the original image based on pre-acquired display region parameters comprises:

based on a display area parameter acquired in advance, intercepting an area identified by the display area parameter from the original image to obtain a sub-area image;

6. An image processing apparatus, applied to a target controller in an image display system, the image display system including a source device and a tiled display screen, the tiled display screen including a plurality of display units, each display unit having a corresponding display controller, the target controller being one of the display controllers, the apparatus comprising:

the identification acquisition module acquires a preset display mode identification;

the image processing module is used for intercepting a sub-region image from the original image based on a display region parameter acquired in advance under the condition that the display mode represented by the display mode identifier is a full-screen display mode, wherein the display region parameter is used for identifying a region in the original image required to be displayed by a display unit corresponding to the target controller, and the full-screen display mode is a display mode in which the content displayed by the spliced display screen is only the same image content;

the image sending module is used for sending the sub-region image to a display unit corresponding to the target controller so as to enable the display unit to display the sub-region image;

the split screen parameter acquisition module is used for acquiring split screen display area information and split screen area parameters under the condition that the display mode represented by the display mode identifier is a split screen display mode, wherein the split screen display area information is used for identifying split screen contents required to be displayed by a display unit corresponding to the target controller; the split screen area parameter is used for identifying a display area of the split screen content in the display unit, and the split screen display mode is a display mode that the content displayed by the spliced display screen comprises the same image content and the split screen content;

7. The apparatus of claim 6, wherein the split-screen image sending module comprises:

the split-screen image sending unit is used for splicing the sub-region image and the split-screen image according to the position relation of the display region in the display unit corresponding to the target controller under the condition that the content required to be displayed by the display unit corresponding to the target controller comprises the sub-region image and the split-screen image, and sending the spliced image to the display unit corresponding to the target controller; or, the split-screen image and the first display position identifier are sent to a display unit corresponding to the target controller, so that the display unit displays the split-screen image in a display area corresponding to the first display position identifier, and simultaneously displays the sub-area image in a display area corresponding to the second display position identifier; the first display position mark is used for marking a display area of the split-screen image in the display unit, the second display position mark is used for marking a display area of the sub-area image in the display unit, and the second display position mark is sent to the display unit by the target controller; or the like, or, alternatively,

the image processing module includes:

the image transmission module includes:

8. An image display system, comprising a source device and a tiled display screen, wherein the tiled display screen comprises a plurality of display elements, each display element having a corresponding display controller, wherein:

each display controller is used for receiving the original image; acquiring a preset display mode identifier, and intercepting a sub-region image from the original image based on a display region parameter acquired in advance under the condition that the display mode represented by the display mode identifier is a full-screen display mode; sending the sub-region image to a corresponding display unit, wherein the display region parameter is used for identifying a region in the original image required to be displayed by the display unit corresponding to the display controller, and the full-screen display mode is a display mode in which the content displayed by the spliced display screen is only the same image content;

each display unit is used for receiving the sub-region image sent by the corresponding display controller and displaying the sub-region image;

each display controller is further configured to, when the display mode indicated by the display mode identifier is a split-screen display mode, acquire split-screen display area information and split-screen area parameters, and generate a split-screen image according to the split-screen area parameters and the split-screen display area information; sending the split screen image to a corresponding display unit; the split-screen display area information is used for identifying split-screen contents which need to be displayed by a display unit corresponding to the display controller; the split screen area parameter is used for identifying a display area of the split screen content in the display unit, and the split screen display mode is a display mode in which the content displayed by the spliced display screen comprises the same image content and the split screen content;

each display unit is also used for receiving the split screen image sent by the corresponding display controller and displaying the split screen image.

9. The system of claim 8,

each display controller is specifically configured to, when the content to be displayed by the display unit corresponding to the display controller includes the sub-region image and the split-screen image, tile the sub-region image and the split-screen image according to a positional relationship of display regions in the display unit corresponding to the display controller, and send the tiled images to the display unit of the display controller; or, under the condition that the content to be displayed by the display unit corresponding to the display controller includes the sub-region image and the split-screen image, sending the split-screen image and the first display position identifier to the display unit corresponding to the display controller, so that the display unit displays the split-screen image in the display region corresponding to the first display position identifier, and simultaneously displays the sub-region image in the display region corresponding to the second display position identifier;

the first display position mark is used for marking a display area of the split-screen image in the display unit, the second display position mark is used for marking a display area of the sub-area image in the display unit, and the second display position mark is sent to the display unit by the display controller.

10. The system according to any one of claims 8-9, wherein one of the plurality of display controllers is connected to the source device, and the other display controllers except the one of the plurality of display controllers are connected to the one of the plurality of display controllers after being sequentially connected in series;

each display controller is specifically configured to receive an original image sent by the information source device and send the original image to a next display controller when the display controller is connected to the information source device; and under the condition of not being connected with the source equipment, receiving an original image sent by a previous display controller, and sending the original image to a next display controller.

11. The system of any one of claims 8-9, wherein the image display system further comprises a distributor, the distributor being connected to the source device and each of the display controllers, respectively;

12. The system of any one of claims 8-9,

each display controller is specifically configured to intercept, from the original image, an area identified by a display area parameter based on the display area parameter acquired in advance, so as to obtain a sub-area image; zooming the subarea image according to the size of the area in the original image required to be displayed by the display unit corresponding to the display controller and the size of the display area of the display unit corresponding to the display controller; and sending the zoomed subarea image to a display unit corresponding to the display controller.

13. The display controller is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor and the communication interface are used for realizing the communication between the processor and the memory through the communication bus;

a memory for storing a computer program;

a processor for implementing the method steps of any one of claims 1 to 5 when executing a program stored in the memory.

14. A computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, which computer program, when being executed by a display controller, carries out the method steps of any one of the claims 1-5.