CN115482325A - Picture rendering method, device, system, equipment and medium - Google Patents
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Abstract
The present disclosure provides a picture rendering method, device, system, device, and medium, which relate to the technical field of artificial intelligence, in particular to the technical fields of augmented reality, virtual reality, computer vision, deep learning, and the like, and can be applied to scenes such as a meta universe, a virtual digital person, and the like. The implementation scheme is as follows: receiving user sight line information uploaded by a first client in at least one client; acquiring a first rendering image of a first foreground target in a virtual scene based on the user sight line information; and sending the first rendering image to the first client so that the first client fuses the received first rendering image into the background scene rendering image.
Description
Technical Field
The present disclosure relates to the field of artificial intelligence technologies, and in particular, to the field of technologies such as augmented reality, virtual reality, computer vision, and deep learning, which can be applied to scenes such as the meta universe and virtual digital people, and in particular, to a method and an apparatus for rendering a picture, a rendering system, an electronic device, a computer-readable storage medium, and a computer program product.
Background
Artificial intelligence is the subject of research that makes computers simulate some human mental processes and intelligent behaviors (such as learning, reasoning, thinking, planning, etc.), both at the hardware level and at the software level. Artificial intelligence hardware technologies generally include technologies such as sensors, dedicated artificial intelligence chips, cloud computing, distributed storage, big data processing, and the like; the artificial intelligence software technology mainly comprises a computer vision technology, a voice recognition technology, a natural language processing technology, machine learning/deep learning, a big data processing technology, a knowledge map technology and the like.
The metauniverse (Metaverse) is a novel virtual-real fused internet application and social modality generated by integrating a plurality of new technologies, provides immersive experience based on an augmented reality technology, generates a mirror image of a real world based on a digital twin technology, builds an economic system based on a block chain technology, closely fuses the virtual world and the real world on an economic system, a social system and an identity system, and allows each user to perform content production and world editing.
The approaches described in this section are not necessarily approaches that have been previously conceived or pursued. Unless otherwise indicated, it should not be assumed that any of the approaches described in this section qualify as prior art merely by virtue of their inclusion in this section. Similarly, unless otherwise indicated, the problems mentioned in this section should not be considered as having been acknowledged in any prior art.
Disclosure of Invention
The present disclosure provides a screen rendering method, apparatus, rendering system, electronic device, computer-readable storage medium, and computer program product.
According to an aspect of the present disclosure, a method for rendering a screen is provided, where the method is applied to a cloud server of a rendering system, the rendering system further includes at least one client, and the method includes: receiving user sight line information uploaded by a first client side of at least one client side, wherein a corresponding virtual camera of the first client side is located in a virtual scene to be rendered, and the user sight line information comprises coordinate information and pose information of the virtual camera in the virtual scene; acquiring a first rendering image of a first foreground target in a virtual scene based on the user sight line information; and sending the first rendering image to the first client so that the first client fuses the received first rendering image into a background scene rendering image, wherein the background scene rendering image is obtained by the first client through rendering aiming at a background scene in the virtual scene based on the user sight line information.
According to another aspect of the present disclosure, there is provided a screen rendering apparatus, where the apparatus is applied to a cloud server of a rendering system, the rendering system further includes at least one client, and the apparatus includes: the receiving unit is configured to receive user sight line information uploaded by a first client of the at least one client, wherein a corresponding virtual camera of the first client is located in a virtual scene to be rendered, and the user sight line information comprises coordinate information and pose information of the virtual camera in the virtual scene; a first acquisition unit configured to acquire a first rendering of a first foreground target in a virtual scene based on user gaze information; and the sending unit is configured to send the first rendering map to the first client so as to enable the first client to fuse the received first rendering map into a background scene rendering map, wherein the background scene rendering map is rendered by the first client for a background scene in the virtual scene based on the user sight line information.
According to another aspect of the present disclosure, there is provided a rendering system including a cloud server and at least one client, wherein the cloud server is configured to perform the following operations: receiving user sight line information uploaded by a first client side of at least one client side, wherein a corresponding virtual camera of the first client side is located in a virtual scene to be rendered, and the user sight line information comprises coordinate information and pose information of the virtual camera in the virtual scene; acquiring a first rendering image of a first foreground target in a virtual scene based on the user sight line information; sending the first rendering graph to a first client; and each of the at least one client is configured to perform the following operations: uploading user sight line information corresponding to the client to a cloud server; acquiring a background scene rendering image corresponding to a background scene in a virtual scene based on the user sight line information; receiving a corresponding first rendering graph sent by a cloud server; and fusing the corresponding first rendering graph into the background scene rendering graph to obtain the virtual scene rendering graph.
According to another aspect of the present disclosure, there is provided an electronic device including: at least one processor; and a memory communicatively coupled to the at least one processor; the memory stores instructions executable by the at least one processor, and the instructions are executable by the at least one processor to enable the at least one processor to perform the screen rendering method.
According to another aspect of the present disclosure, there is provided a non-transitory computer-readable storage medium storing computer instructions for causing a computer to execute the above-described screen rendering method.
According to another aspect of the present disclosure, there is provided a computer program product comprising a computer program, wherein the computer program realizes the above-mentioned picture rendering method when executed by a processor.
According to one or more embodiments of the disclosure, complex elements such as a first foreground object in a virtual scene are rendered through the cloud server, and a background scene is rendered through the client, so that the utilization of computing resources for rendering the virtual scene can be optimized, and the computing resources of the cloud server and data transmission resources between clouds and terminals are saved.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present disclosure, nor do they limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.
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The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the embodiments and, together with the description, serve to explain the exemplary implementations of the embodiments. The illustrated embodiments are for purposes of illustration only and do not limit the scope of the claims. Throughout the drawings, identical reference numbers designate similar, but not necessarily identical, elements.
FIG. 1 illustrates a schematic diagram of an exemplary system in which various methods described herein may be implemented, according to an embodiment of the present disclosure;
FIG. 2 shows a flow diagram of a screen rendering method according to an embodiment of the present disclosure;
FIG. 3 illustrates a flow diagram of obtaining a first rendering graph according to an embodiment of the disclosure;
FIG. 4 illustrates a flow diagram for determining at least one center gaze of a plurality of user gaze, in accordance with an embodiment of the present disclosure;
FIG. 5 shows a schematic view of a user's gaze and a user's gaze convergence plane, according to an example embodiment of the present disclosure;
FIG. 6 shows a process flow diagram for a second rendering graph in accordance with an example embodiment of the present disclosure;
fig. 7 shows a block diagram of a screen rendering apparatus according to an embodiment of the present disclosure;
FIG. 8 shows a schematic diagram of a rendering system according to an example embodiment of the present disclosure;
FIG. 9 illustrates a block diagram of an exemplary electronic device that can be used to implement embodiments of the present disclosure.
Detailed Description
Exemplary embodiments of the present disclosure are described below with reference to the accompanying drawings, in which various details of the embodiments of the disclosure are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope of the present disclosure. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
In the present disclosure, unless otherwise specified, the use of the terms "first", "second", and the like to describe various elements is not intended to limit the positional relationship, the temporal relationship, or the importance relationship of the elements, and such terms are used only to distinguish one element from another. Furthermore, reference to a "first" element does not necessarily require that a "second" element be provided. In some examples, a first element and a second element may refer to the same instance of the element, and in some cases, based on the context, they may also refer to different instances.
The terminology used in the description of the various described examples in this disclosure is for the purpose of describing particular examples only and is not intended to be limiting. Unless the context clearly indicates otherwise, if the number of elements is not specifically limited, the elements may be one or more. Furthermore, the term "and/or" as used in this disclosure is intended to encompass any and all possible combinations of the listed items.
At present, the meta universe is gradually becoming a new industrial hotspot of the internet. People can meet in the meta-space, watch shows, socialize, play games and other activities. The meta universe currently referred to by the internet industry refers to a three-dimensional form of the meta universe.
The existing business metas system requires a user to use a mobile phone or a virtual reality head-mounted display device as a display terminal, but the terminals do not have strong rendering capability, which causes a problem of poor rendering image quality in some online release meetings and important online conferences.
In order to improve the picture rendering quality, the rendering task is wholly migrated to the cloud in the related technology, but the rendering burden of the cloud is increased, the rendering capability of the client is wasted, and interaction delay is brought.
According to the embodiment of the disclosure, a picture rendering method is provided, wherein a cloud server is applied to render complex elements such as a first foreground object in a virtual scene, and a client is used to render a background scene, so that an end-cloud integrated rendering framework can be realized, the computing resource utilization of virtual scene rendering is optimized, and cloud computing resources and data transmission resources between the end and the cloud are saved.
Embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.
Fig. 1 illustrates a schematic diagram of an exemplary system 100 in which various methods and apparatus described herein may be implemented in accordance with embodiments of the present disclosure. Referring to fig. 1, the system 100 includes one or more client devices 101, 102, 103, 104, 105, and 106, a server 120, and one or more communication networks 110 coupling the one or more client devices to the server 120. Client devices 101, 102, 103, 104, 105, and 106 may be configured to execute one or more applications.
In an embodiment of the present disclosure, the server 120 may run one or more services or software applications that enable the screen rendering method of the present disclosure to be performed.
In some embodiments, the server 120 may also provide other services or software applications, which may include non-virtual environments and virtual environments. In certain embodiments, these services may be provided as web-based services or cloud services, for example, provided to users of client devices 101, 102, 103, 104, 105, and/or 106 under a software as a service (SaaS) model.
In the configuration shown in fig. 1, server 120 may include one or more components that implement the functions performed by server 120. These components may include software components, hardware components, or a combination thereof, which may be executed by one or more processors. A user operating client devices 101, 102, 103, 104, 105, and/or 106 may, in turn, utilize one or more client applications to interact with server 120 to take advantage of the services provided by these components. It should be understood that a variety of different system configurations are possible, which may differ from system 100. Accordingly, fig. 1 is one example of a system for implementing the various methods described herein, and is not intended to be limiting.
The user may upload user gaze information using client devices 101, 102, 103, 104, 105, and/or 106. The client device may provide an interface that enables a user of the client device to interact with the client device. The client device may also output information to the user via the interface. Although fig. 1 depicts only six client devices, those skilled in the art will appreciate that any number of client devices may be supported by the present disclosure.
The server 120 may include one or more general purpose computers, special purpose server computers (e.g., PC (personal computer) servers, UNIX servers, mid-end servers), blade servers, mainframe computers, server clusters, or any other suitable arrangement and/or combination. The server 120 may include one or more virtual machines running a virtual operating system, or other computing architecture involving virtualization (e.g., one or more flexible pools of logical storage that may be virtualized to maintain virtual storage for the server). In various embodiments, the server 120 may run one or more services or software applications that provide the functionality described below.
The computing units in server 120 may run one or more operating systems including any of the operating systems described above, as well as any commercially available server operating systems. The server 120 can also run any of a variety of additional server applications and/or mid-tier applications, including HTTP servers, FTP servers, CGI servers, JAVA servers, database servers, and the like.
In some implementations, the server 120 can include one or more applications to analyze and consolidate data feeds and/or event updates received from users of the client devices 101, 102, 103, 104, 105, and/or 106. Server 120 may also include one or more applications to display data feeds and/or real-time events via one or more display devices of client devices 101, 102, 103, 104, 105, and/or 106.
In some embodiments, the server 120 may be a server of a distributed system, or a server incorporating a blockchain. The server 120 may also be a cloud server, or a smart cloud computing server or a smart cloud host with artificial intelligence technology. The cloud Server is a host product in a cloud computing service system, and is used for solving the defects of high management difficulty and weak service expansibility in the traditional physical host and Virtual Private Server (VPS) service.
The system 100 may also include one or more databases 130. In some embodiments, these databases may be used to store data and other information. For example, one or more of the databases 130 may be used to store information such as audio files and video files. The database 130 may reside in various locations. For example, the database used by the server 120 may be local to the server 120, or may be remote from the server 120 and may communicate with the server 120 via a network-based or dedicated connection. The database 130 may be of different types. In certain embodiments, the database used by the server 120 may be, for example, a relational database. One or more of these databases may store, update, and retrieve data to and from the database in response to the command.
In some embodiments, one or more of the databases 130 may also be used by applications to store application data. The databases used by the application may be different types of databases, such as key-value stores, object stores, or conventional stores supported by a file system.
The system 100 of fig. 1 may be configured and operated in various ways to enable application of the various methods and apparatus described in accordance with the present disclosure.
According to some embodiments, as shown in fig. 2, a screen rendering method is provided, where the method is applied to a cloud server of a rendering system, the rendering system further includes at least one client, and the method includes: step S201, receiving user sight line information uploaded by a first client in at least one client, wherein a virtual camera corresponding to the first client is located in a virtual scene to be rendered, and the user sight line information comprises coordinate information and pose information of the virtual camera in the virtual scene; step S202, acquiring a first rendering image of a first foreground target in a virtual scene based on user sight line information; and step S203, sending the first rendering map to the first client so that the first client fuses the received first rendering map into a background scene rendering map, wherein the background scene rendering map is obtained by the first client by rendering a background scene in the virtual scene based on the user sight line information.
According to the embodiment of the disclosure, complex elements such as a first foreground target in a virtual scene are rendered through the cloud server, and a background scene is rendered through the client, so that an end-cloud integrated rendering framework can be realized, the computing resource utilization of virtual scene rendering is optimized, and cloud computing resources and data transmission resources between the end and the cloud are saved.
In some embodiments, the rendering system of the present disclosure may include a cloud server, for example, the server 120 shown in fig. 1, and at least one client, for example, a terminal device having a display panel, such as a mobile phone, a virtual reality head-mounted display device, and the like.
The client can display a three-dimensional virtual scene (such as a meta universe) through a display panel of the terminal device, and a user can also perform corresponding interactive operation based on the three-dimensional virtual scene through operating the client.
The virtual scene to be rendered includes a background scene and a first foreground object, wherein the first foreground object may include other virtual objects besides the background scene. For example, the virtual scene is a virtual scene of a car release meeting, the corresponding background scene is a scene of a meeting place, and the corresponding first foreground object may be a virtual vehicle shown by a conference virtual host and a release meeting. The virtual scene corresponds to a virtual space coordinate system, and the virtual models corresponding to the first foreground objects in the virtual scene each include coordinate information in the virtual space coordinate system.
When a user views the virtual scene through the client, the client corresponds to a virtual camera in the virtual scene, the virtual camera also contains corresponding coordinate information and pose information (namely rotation angle) outside the background scene, the coordinate information and the pose information can reflect the sight line information of the user together, the information can be obtained through a corresponding application program in the client, and the sight line information of the user is changed in response to the operation of the user.
In some embodiments, after the cloud server acquires the user sight line information, the first foreground object in the virtual scene can be rendered according to the user sight line. In some embodiments, the cloud server may render the first foreground object based on a rendering pipeline technique, and specifically, may perform model transformation on a virtual model corresponding to the first foreground object based on the user sight line information, perform geometric phase processing such as vertex coloring, clipping, projection transformation, screen mapping, and then perform rasterization phase processing such as triangle setting, triangle traversal, pigment coloring, and fusion on the virtual model, thereby obtaining a first rendering map corresponding to the user sight line.
The first rendering graph is obtained, and then the first rendering graph can be sent to the client, wherein the first rendering graph can be a rectangular two-dimensional image formed by splicing two triangular patches, and partial pixels except the first foreground object are all transparent. In some embodiments, the layer depth information corresponding to the first rendering map may be simultaneously delivered to the client, and the client may scale and fuse the first rendering map to a corresponding position in the background scene rendering map based on the layer depth information, so as to obtain a complete virtual scene rendering map corresponding to the fused user view, and display the virtual scene rendering map on a display panel of the client or a display panel of the virtual reality head-mounted display device.
The layer depth information may be obtained, for example, based on coordinate information of a virtual camera in a virtual space coordinate system and coordinate information of the first foreground object. In one example, the layer depth information may also be estimated based on a height or a width of a corresponding image contour of the first foreground object under the user's gaze and a height or a width of a virtual model of the first foreground object.
Wherein, the background scene rendering graph can be obtained by the client through rendering based on the rendering pipeline technology.
In some embodiments, the client can upload the user sight information to the cloud server in real time, and the cloud server feeds back a real-time first rendering map corresponding to the user sight in real time based on the corresponding information and correspondingly fuses the first rendering map into a background scene rendering map obtained by real-time rendering, so that a three-dimensional virtual scene changing in real time along with the user sight is displayed to the user.
Therefore, by the picture rendering method, the computing consumption of the cloud server can be further reduced, and the bandwidth for transmitting the rendering picture is saved, so that the picture delay caused by the picture rendering method is avoided, and the real-time performance of the three-dimensional virtual scene display is improved.
In some cases, the rendering system includes a plurality of clients, and the cloud server may simultaneously acquire a plurality of user sight information from the plurality of clients, respectively, at the same time.
According to some embodiments, as shown in fig. 3, obtaining a first rendering corresponding to a first foreground object in a virtual scene based on user gaze information may include: step S301, respectively determining a plurality of corresponding user sight lines based on a plurality of user sight line information; step S302, determining at least one central sight line of a plurality of user sight lines based on the plurality of user sight lines; step S303, aiming at each central sight line in at least one central sight line, and acquiring a second rendering map of the first foreground target, which corresponds to the central sight line, based on the central sight line; and step S304, aiming at each user sight line in at least one user sight line corresponding to the central sight line, and acquiring a first rendering map corresponding to the user sight line based on the second rendering map and the user sight line.
Therefore, at least one central sight is obtained based on the plurality of user sights, only the pictures corresponding to the central sight are rendered, and then the pictures of all the user perspectives are obtained through fitting, so that computing resources of cloud rendering are further saved, and rendering efficiency is improved.
And for a plurality of user sight line information from a plurality of clients, respectively determining the user sight line corresponding to each user sight line information.
In some embodiments, the user gaze may be a ray in the virtual space corresponding to the coordinate information and pose information of the virtual camera. In one example, the user gaze may be obtained from coordinate information of the virtual camera and coordinates of a center position of the first foreground subject, which may be a ray directed by the virtual camera to the first foreground subject.
In some exemplary embodiments, a plurality of user sights corresponding to a plurality of clients may be acquired based on the above manner, and the plurality of user sights are combined based on a preset combination rule, so as to acquire at least one center sight. The preset combination rule may be that a distance between the center line of sight and the corresponding line of sight of the user is smaller than a preset distance.
According to some embodiments, as shown in fig. 4, determining at least one center gaze of the plurality of user gaze based on the plurality of user gaze comprises: step S401, determining a user sight converging surface of a first foreground target based on coordinate information of the first foreground target in a virtual space, wherein the user sight converging surface is a spherical surface taking the first foreground target as a center; s402, determining a plurality of sight intersection points of a plurality of user sights and a user sight converging surface; step S403, determining at least one sight line central point based on a plurality of sight line intersection points; and step S404, determining a central sight line corresponding to each sight line central point based on each sight line central point in the at least one sight line central point.
Therefore, at least one center sight line intersection point is acquired based on the plurality of sight line intersection points, so that the center sight line can be acquired more accurately, and the calculation amount is reduced.
Fig. 5 illustrates a schematic view of a user's gaze and a user's gaze convergence plane, according to an exemplary embodiment of the present disclosure.
In some embodiments, as shown in fig. 5, the user gaze convergence plane 502 corresponding to the first foreground object 501 may be first determined based on the coordinate information of the virtual model corresponding to the first foreground object in the virtual space coordinate system. The user sight line converging surface 502 may be a spherical surface with the central point of the first foreground target 501 as the center of sphere. Then, on the basis of acquiring each user sight line 503, a sight line intersection point of each user sight line 503 and the user sight line converging surface 502 may be acquired respectively, and on the basis of acquiring a plurality of sight line intersection points, at least one sight line center point 504 may be determined. In some exemplary embodiments, the line of sight center point may be determined based on a preset rule, which may be, for example, that a distance between the line of sight center point and its corresponding line of sight intersection is less than a preset threshold.
After the center points of the lines of sight are determined, their respective central lines of sight may be determined based on each center point of the lines of sight. In some exemplary embodiments, the central line of sight may be a ray whose respective line of sight center point points to a center point of the first foreground subject.
According to some embodiments, determining the at least one line of sight center point based on the plurality of line of sight intersection points comprises: and clustering the plurality of sight line intersection points to determine at least one cluster center of the plurality of sight line intersection points as at least one sight line center point.
In some embodiments, clustering of the multiple sight line intersection points can be performed by applying a Meanshift clustering algorithm, so that the solid line central point is obtained in a clustering mode, the obtained central sight line has a better effect, and the method is more suitable for subsequent image affine transformation.
In some embodiments, after at least one center line of sight is acquired, a second rendering map corresponding to each center line of sight may be acquired by the rendering pipeline technology based on the perspective corresponding to each center line of sight. The second rendering map may then be mapped based on each user's gaze corresponding to the center gaze, thereby obtaining a first rendering map corresponding to each user's gaze.
According to some embodiments, based on the second rendering and the user's view, obtaining the first rendering corresponding to the user's view comprises: fitting to obtain a polygon boundary corresponding to the second rendering graph based on the image boundary of the second rendering graph; dividing the second rendering map into a plurality of triangular patches based on the polygon boundary; and performing affine transformation on each triangular patch of the plurality of triangular patches based on the user sight line and the corresponding central sight line to obtain a first rendering map corresponding to the user sight line.
Therefore, a plurality of triangular patches of the rendering graph are obtained by performing boundary extraction, polygon fitting and triangulation on a second rendering graph obtained by rendering based on the central sight, and affine transformation is performed based on the user sight information and the central sight, so that a first rendering graph corresponding to the user sight is obtained; therefore, the rendering graphs of all the user visual angles do not need to be rendered, the corresponding rendering graphs of different users can be obtained, the consumption of computing resources is reduced, and the rendering efficiency is improved.
Fig. 6 shows a process flow diagram for a second rendering graph according to an example embodiment of the present disclosure.
As shown in fig. 6, first, a contour extraction is performed on the second rendering 601, so as to obtain a rendering 602 with a contour extracted. In some exemplary embodiments, the contour extraction of the second rendering 601 may be performed by, for example, a flooding algorithm based on transparent pixels in the second rendering 601.
Then, the contour of the rendered map 602 after the contour extraction may be fitted to a polygon boundary, so as to obtain a rendered map 603 with a polygon boundary, and in some exemplary embodiments, the polygon fitting may be performed on the contour by starting from any one of the pixel points on the contour and extending in a direction tangential to the contour until an average distance between the contour and the straight line is greater than a preset threshold, determining a vertex of a polygon boundary, and continuing to perform fitting based on the above manner until a closed polygon boundary is obtained.
The rendered map 603 with the polygon boundaries may then be triangulated (e.g., delayeney triangulation) based on each vertex of the polygon boundaries, resulting in a rendered map 604 that is divided into a number of triangular patches.
In some embodiments, the contour of the two-dimensional image at the corresponding viewing angle and the corresponding polygon boundary may be obtained first based on the user sight line information, and a plurality of triangular patches of the polygon boundary may be obtained correspondingly, and then each triangular patch in the second foreground rendering may be mapped into a corresponding triangular patch in the contour of the two-dimensional image corresponding to the user sight line through image affine transformation, so as to obtain the first rendering corresponding to the user sight line
Therefore, when one virtual scene is watched by thousands of users, the user sight can be clustered into central sights within 20 in the mode, and therefore the cloud server does not need to render the user sights uploaded by each user correspondingly, computing resources of the cloud server are greatly saved, and meanwhile the real-time performance of picture display is further improved.
According to some embodiments, as shown in fig. 7, a screen rendering apparatus 700 is provided, where the apparatus 700 is applied to a cloud server of a rendering system, the rendering system further includes at least one client, and the apparatus 700 includes: the receiving unit 710 is configured to receive user gaze information uploaded by a first client of the at least one client, where a corresponding virtual camera of the first client is located in a virtual scene to be rendered, and the user gaze information includes coordinate information and pose information of the virtual camera in the virtual scene; a first obtaining unit 720, configured to obtain a first rendering of a first foreground target in a virtual scene based on the user gaze information; and a sending unit 730 configured to send the first rendering map to the first client, so that the first client fuses the received first rendering map into a background scene rendering map, wherein the background scene rendering map is rendered by the first client for a background scene in the virtual scene based on the user sight information.
The operations performed by the units 710-730 in the image rendering apparatus 700 are similar to the operations performed by the steps S201-S203 in the image rendering method, and are not repeated herein.
According to some embodiments, the rendering system may include a plurality of clients, and the cloud server may acquire a plurality of user sight line information from the plurality of clients, respectively, at the same time, and the first acquiring unit may include: a first determining subunit configured to determine, based on the plurality of user gaze information, a corresponding plurality of user gaze lines, respectively; a second determining subunit configured to determine at least one center gaze of the plurality of user sights based on the plurality of user sights; and an execution subunit configured to, for each of the at least one central line of sight, perform operations of the following modules, the execution subunit including: a first acquisition module configured to acquire a second rendering map of the first foreground target corresponding to the central sight line based on the central sight line; and a second acquisition module configured to acquire, for each of at least one user gaze corresponding to the center gaze, a first rendering corresponding to the user gaze based on a second rendering and the user gaze.
According to some embodiments, the second determining subunit may include: the first determining module is configured to determine a user sight converging surface of the first foreground target based on coordinate information of the first foreground target in a virtual space, wherein the user sight converging surface is a spherical surface with the first foreground target as a center; a second determination module configured to determine a plurality of gaze intersections of a plurality of user gaze lines and a user gaze convergence plane; a third determination module configured to determine at least one gaze center point based on the plurality of gaze intersection points; and a fourth determination module configured to determine a respective central line of sight based on each of the at least one line of sight center points.
According to some embodiments, the third determination module may be further configured to: and clustering the plurality of sight line intersection points to determine at least one cluster center of the plurality of sight line intersection points as at least one sight line center point.
According to some embodiments, the second obtaining module may be further configured to: fitting to obtain a polygon boundary corresponding to the second rendering map based on the image boundary of the second rendering map; dividing the second rendering map into a plurality of triangular patches based on the polygon boundary; and performing affine transformation on each triangular patch of the plurality of triangular patches based on the user sight line and the corresponding central sight line to obtain a first rendering map corresponding to the user sight line.
According to some embodiments, a rendering system is provided, comprising a cloud server and at least one client, wherein the cloud server is configured to perform the following operations: receiving user sight line information uploaded by a first client side of at least one client side, wherein a corresponding virtual camera of the first client side is located in a virtual scene to be rendered, and the user sight line information comprises coordinate information and pose information of the virtual camera in the virtual scene; acquiring a first rendering image of a first foreground target in a virtual scene based on the user sight line information; sending the first rendering graph to a first client; and each of the at least one client is configured to perform the following operations: uploading user sight line information corresponding to the client to a cloud server; acquiring a background scene rendering image corresponding to a background scene in a virtual scene based on the user sight line information; receiving a corresponding first rendering graph sent by a cloud server; and fusing the corresponding first rendering graph into the background scene rendering graph to obtain the virtual scene rendering graph.
Fig. 8 shows a schematic diagram of a rendering system according to an exemplary embodiment of the present disclosure.
As shown in fig. 8, the rendering system includes a cloud server 810 and a client 820, and is configured to perform the following operations: step S801, the client 820 uploads corresponding user sight line information to the cloud server 810; step S802, the cloud server 810 acquires a first rendering image of a first foreground target based on the user sight line information; step S803, the cloud server 810 sends the first rendering map to the corresponding client 820; step S804, the client 820 obtains a background scene rendering image corresponding to a background scene in the virtual scene based on the user sight line information; and step S805, the client 820 fuses the first rendering map into the background scene rendering map to obtain a virtual scene rendering map.
In some embodiments, the cloud server in the rendering system may also perform operations similar to the image rendering method to obtain the first rendering map, which is not described herein again.
According to an embodiment of the present disclosure, there is also provided an electronic device, a readable storage medium, and a computer program product.
Referring to fig. 9, a block diagram of a structure of an electronic device 900 that may be a server or a client of the present disclosure, which is an example of a hardware device that may be applied to aspects of the present disclosure, will now be described. Electronic device is intended to represent various forms of digital electronic computer devices, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be examples only, and are not meant to limit implementations of the disclosure described and/or claimed herein.
As shown in fig. 9, the electronic apparatus 900 includes a computing unit 901, which can perform various appropriate actions and processes in accordance with a computer program stored in a Read Only Memory (ROM) 902 or a computer program loaded from a storage unit 908 into a Random Access Memory (RAM) 903. In the RAM903, various programs and data necessary for the operation of the electronic apparatus 900 can be stored. The calculation unit 901, ROM 902, and RAM903 are connected to each other via a bus 904. An input/output (I/O) interface 905 is also connected to bus 904.
A number of components in the electronic device 900 are connected to the I/O interface 905, including: an input unit 906, an output unit 907, a storage unit 908, and a communication unit 909. The input unit 906 may be any type of device capable of inputting information to the electronic device 900, and the input unit 906 may receive input numeric or character information and generate key signal inputs related to user settings and/or function controls of the electronic device, and may include, but is not limited to, a mouse, a keyboard, a touch screen, a track pad, a track ball, a joystick, a microphone, and/or a remote control. Output unit 907 may be any type of device capable of presenting information and may include, but is not limited to, a display, speakers, a video/audio output terminal, a vibrator, and/or a printer. Storage unit 908 may include, but is not limited to, a magnetic disk, an optical disk. The communication unit 909 allows the electronic device 900 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunications networks, and may include, but is not limited to, modems, network cards, infrared communication devices, wireless communication transceivers and/or chipsets, such as bluetooth (TM) devices, 802.11 devices, wiFi devices, wiMax devices, cellular communication devices, and/or the like.
The computing unit 901 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of the computing unit 901 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various dedicated Artificial Intelligence (AI) computing chips, various computing units running machine learning model algorithms, a Digital Signal Processor (DSP), and any suitable processor, controller, microcontroller, and so forth. The calculation unit 901 executes the respective methods and processes described above, such as the screen rendering method described above. For example, in some embodiments, the screen rendering method described above may be implemented as a computer software program tangibly embodied in a machine-readable medium, such as storage unit 908. In some embodiments, part or all of a computer program may be loaded onto and/or installed onto electronic device 900 via ROM 902 and/or communications unit 909. When the computer program is loaded into the RAM903 and executed by the computing unit 901, one or more steps of the above-described screen rendering method described above may be performed. Alternatively, in other embodiments, the computing unit 901 may be configured to perform the above-described screen rendering method by any other suitable means (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuitry, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), system on a chip (SOCs), complex Programmable Logic Devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs that are executable and/or interpretable on a programmable system including at least one programmable processor, which may be special or general purpose, receiving data and instructions from, and transmitting data and instructions to, a storage system, at least one input device, and at least one output device.
Program code for implementing the methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowchart and/or block diagram to be performed. The program code may execute entirely on the machine, partly on the machine, as a stand-alone software package partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of this disclosure, a machine-readable medium may be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which a user may provide input to the computer. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a back-end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back-end, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), and the Internet.
The computer system may include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server may be a cloud server, a server of a distributed system, or a server combining a blockchain.
It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present disclosure may be performed in parallel, sequentially or in different orders, and are not limited herein as long as the desired results of the technical aspects of the present disclosure can be achieved.
Although embodiments or examples of the present disclosure have been described with reference to the accompanying drawings, it is to be understood that the above-described methods, systems and apparatus are merely exemplary embodiments or examples and that the scope of the present invention is not limited by these embodiments or examples, but only by the claims as issued and their equivalents. Various elements in the embodiments or examples may be omitted or may be replaced with equivalents thereof. Further, the steps may be performed in an order different from that described in the present disclosure. Further, the various elements in the embodiments or examples may be combined in various ways. It is important that as technology evolves, many of the elements described herein may be replaced by equivalent elements that appear after the present disclosure.
Claims (14)
1. A picture rendering method is applied to a cloud server side of a rendering system, the rendering system further comprises at least one client side, and the method comprises the following steps:
receiving user sight information uploaded by a first client of the at least one client, wherein a corresponding virtual camera of the first client is located in a virtual scene to be rendered, and the user sight information comprises coordinate information and pose information of the virtual camera in the virtual scene;
obtaining a first rendering image of a first foreground target in the virtual scene based on the user sight line information; and
and sending the first rendering map to the first client so as to enable the first client to fuse the received first rendering map into a background scene rendering map, wherein the background scene rendering map is rendered by the first client for a background scene in the virtual scene based on the user sight line information.
2. The method of claim 1, wherein the rendering system comprises a plurality of clients, the cloud server obtains a plurality of user gaze information from the plurality of clients, respectively, at a same time, and wherein the obtaining a first rendering of a first foreground object in the virtual scene based on the user gaze information comprises:
respectively determining a plurality of corresponding user sight lines based on the plurality of user sight line information;
determining at least one center gaze of the plurality of user gaze based on the plurality of user gaze; and
for each of the at least one center line of sight, performing the following:
based on the central sight line, acquiring a second rendering map of the first foreground target, which corresponds to the central sight line; and
and for each user sight line in at least one user sight line corresponding to the center sight line, acquiring a first rendering graph corresponding to the user sight line based on the second rendering graph and the user sight line.
3. The method of claim 2, wherein the determining, based on the plurality of user gaze lines, at least one center gaze line of the plurality of user gaze lines comprises:
determining a user sight convergence plane of the first foreground target based on the coordinate information of the first foreground target in the virtual space, wherein the user sight convergence plane is a spherical surface with the first foreground target as a center;
determining a plurality of sight intersection points of the plurality of user sights and the user sight convergence plane;
determining at least one line of sight center point based on the plurality of line of sight intersection points; and
and determining a corresponding central sight line of the sight line central point based on each sight line central point of the at least one sight line central point.
4. The method of claim 3, wherein said determining at least one line of sight center point based on the plurality of line of sight intersection points comprises:
clustering the plurality of sight line intersection points to determine at least one cluster center of the plurality of sight line intersection points as the at least one sight line center point.
5. The method according to any one of claims 2-4, wherein the obtaining a corresponding first rendering map of the user's gaze based on the second rendering map and the user's gaze comprises:
fitting to obtain a polygon boundary corresponding to the second rendering map based on the image boundary of the second rendering map;
dividing the second rendering map into a plurality of triangular patches based on the polygon boundary; and
affine transformation is performed on each triangular patch in the plurality of triangular patches based on the user line of sight and the corresponding center line of sight to obtain a first rendering corresponding to the user line of sight.
6. A picture rendering device, wherein the device is applied to a cloud server of a rendering system, the rendering system further comprises at least one client, and the device comprises:
a receiving unit configured to receive user gaze information uploaded by a first client of the at least one client, wherein a corresponding virtual camera of the first client is located in a virtual scene to be rendered, the user gaze information including coordinate information and pose information of the virtual camera in the virtual scene;
a first acquisition unit configured to acquire a first rendering of a first foreground target in the virtual scene based on the user gaze information; and
a sending unit configured to send the first rendering map to the first client, so that the first client fuses the received first rendering map into a background scene rendering map, wherein the background scene rendering map is rendered by the first client for a background scene in the virtual scene based on the user sight line information.
7. The apparatus according to claim 6, wherein the rendering system includes a plurality of clients, the cloud server acquires a plurality of user line of sight information from the plurality of clients, respectively, at the same time, and wherein the first acquisition unit includes:
a first determining subunit configured to determine, based on the plurality of user gaze information, a corresponding plurality of user sights, respectively;
a second determining subunit configured to determine at least one center line of sight of the plurality of user lines of sight based on the plurality of user lines of sight; and
an execution subunit configured to, for each of the at least one central line of sight, perform operations of the following modules, the execution subunit comprising:
a first obtaining module configured to obtain a second rendering corresponding to the center line of sight of the first foreground target based on the center line of sight; and
a second obtaining module configured to obtain, for each of at least one user gaze corresponding to the center gaze, a first rendering corresponding to the user gaze based on the second rendering and the user gaze.
8. The apparatus of claim 7, wherein the second determining subunit comprises:
a first determining module configured to determine a user sight converging plane of the first foreground target based on coordinate information of the first foreground target in the virtual space, wherein the user sight converging plane is a spherical surface with the first foreground target as a center;
a second determination module configured to determine a plurality of gaze intersections of the plurality of user gaze lines and the user gaze line convergence plane;
a third determination module configured to determine at least one gaze center point based on the plurality of gaze intersections; and
a fourth determination module configured to determine, based on each of the at least one line of sight center points, a respective central line of sight for that line of sight center point.
9. The apparatus of claim 8, wherein the third determination module is further configured to:
clustering the plurality of sight line intersection points to determine at least one cluster center of the plurality of sight line intersection points as the at least one sight line center point.
10. The apparatus of any of claims 7-9, wherein the second acquisition module is further configured to:
fitting to obtain a corresponding polygon boundary of the second rendering graph based on the image boundary of the second rendering graph;
dividing the second rendering map into a plurality of triangular patches based on the polygon boundary; and
affine transformation is carried out on each triangular patch in the plurality of triangular patches on the basis of the user sight line and the corresponding central sight line, so that a first rendering graph corresponding to the user sight line is obtained.
11. A rendering system comprises a cloud server and at least one client, wherein,
the cloud server is configured to perform the following operations:
receiving user sight information uploaded by a first client of the at least one client, wherein a corresponding virtual camera of the first client is located in a virtual scene to be rendered, and the user sight information comprises coordinate information and pose information of the virtual camera in the virtual scene;
obtaining a first rendering image of a first foreground target in the virtual scene based on the user sight line information; and
sending the first rendering graph to the first client; and
each of the at least one client is configured to perform the following operations:
uploading user sight information corresponding to the client to the cloud server;
acquiring a background scene rendering graph corresponding to a background scene in the virtual scene based on the user sight line information;
receiving a corresponding first rendering graph sent by the cloud server; and
and fusing the corresponding first rendering graph into the background scene rendering graph to obtain a virtual scene rendering graph.
12. An electronic device, comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein
The memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-5.
13. A non-transitory computer readable storage medium having stored thereon computer instructions for causing the computer to perform the method of any one of claims 1-5.
14. A computer program product comprising a computer program, wherein the computer program realizes the method of any one of claims 1-5 when executed by a processor.
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