WO2022089087A1 - 图像处理方法、装置、电子设备及计算机可读介质 - Google Patents

图像处理方法、装置、电子设备及计算机可读介质 Download PDF

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Publication number
WO2022089087A1
WO2022089087A1 PCT/CN2021/118950 CN2021118950W WO2022089087A1 WO 2022089087 A1 WO2022089087 A1 WO 2022089087A1 CN 2021118950 W CN2021118950 W CN 2021118950W WO 2022089087 A1 WO2022089087 A1 WO 2022089087A1
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Prior art keywords
image
fluid
fluid element
present disclosure
state
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PCT/CN2021/118950
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English (en)
French (fr)
Inventor
王兢业
李奇
王凤伟
雷凯翔
Original Assignee
北京字跳网络技术有限公司
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Application filed by 北京字跳网络技术有限公司 filed Critical 北京字跳网络技术有限公司
Priority to US18/250,718 priority Critical patent/US20230401764A1/en
Publication of WO2022089087A1 publication Critical patent/WO2022089087A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/00—2D [Two Dimensional] image generation
    • G06T11/001—Texturing; Colouring; Generation of texture or colour
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/50—Image enhancement or restoration using two or more images, e.g. averaging or subtraction
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/20—Special algorithmic details
    • G06T2207/20212—Image combination
    • G06T2207/20221—Image fusion; Image merging

Definitions

  • the present disclosure relates to the technical field of image processing, and in particular, to an image processing method, apparatus, electronic device, and computer-readable medium.
  • the image processing capability of the computer is getting stronger and stronger, and the simulation of ink painting on the computer enables the user to draw the ink painting through the computer.
  • the purpose of the present disclosure is to solve at least one of the above-mentioned technical defects, especially the technical defects of the existing ink painting simulation products, which are applicable to all users with painting foundation and whose application scope is not wide.
  • an image processing method comprising:
  • a fluid simulation algorithm is used to determine the flow state of the fluid element to obtain a second image
  • a stop state of the fluid element is determined, resulting in a third image.
  • a picture drawing device based on a user interaction comprising:
  • a first image generation module configured to generate a first image in which the fluid element is in an initial state based on input information; the input information is used to determine the initial state of the fluid element;
  • a second image generation module configured to determine the flow state of the fluid element with a fluid simulation algorithm based on the first image to obtain a second image
  • the third image generation module is configured to determine the stop state of the fluid element based on the second image to obtain a third image.
  • an electronic device comprising:
  • processors one or more processors
  • one or more application programs wherein the one or more application programs are stored in memory and configured to be executed by one or more processors, the one or more programs are configured to: perform the above-described user interaction based drawing drawing method.
  • a computer-readable storage medium stores at least one instruction, at least one piece of program, code set or instruction set, and at least one instruction, at least one piece of program, code set or instruction set is loaded by a processor And execute to realize the above-mentioned image processing method.
  • the embodiment of the present disclosure generates a first image of the fluid element in the initial state by receiving input information, determines the flow state of the fluid element based on the first image and the fluid simulation algorithm, generates a second image, and then determines based on the second image.
  • the stop state of the fluid element is obtained, the third image is obtained, the image processing is divided into three layers, and the initial state, flow state and stop state of the fluid element are described respectively, and the simulation of the fluid flow and solidification process is more realistic.
  • the simulation effect is more realistic, and it is easy for users to get started.
  • FIG. 1 is a schematic flowchart of an image processing method according to an embodiment of the present disclosure
  • FIG. 2 is a schematic flowchart of an image display method according to an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of three images according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram of the flow of a fluid element according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of an image processing apparatus according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure.
  • the term “including” and variations thereof are open-ended inclusions, ie, "including but not limited to”.
  • the term “based on” is “based at least in part on.”
  • the term “one embodiment” means “at least one embodiment”; the term “another embodiment” means “at least one additional embodiment”; the term “some embodiments” means “at least some embodiments”. Relevant definitions of other terms will be given in the description below.
  • the user-interactive user-based picture drawing method, device, electronic device and computer-readable storage medium aim to solve the above technical problems in the prior art.
  • An embodiment of the present disclosure provides a method for drawing pictures based on a user interaction. As shown in FIG. 1 , the method includes:
  • Step S101 based on input information, generate the first image that fluid element is in initial state; Described input information is used to determine the initial state of described fluid element;
  • Step S102 based on the first image, determine the flow state of the fluid element with a fluid simulation algorithm to obtain a second image;
  • Step S103 based on the second image, determine the stop state of the fluid element to obtain a third image.
  • an image processing method is provided, which is mainly applied to the field of ink painting simulation technology, which is equivalent to providing an ink painting simulation technology for generating ink painting based on user operations, which is mainly applied to mobile terminals, such as mobile phones , tablet computer, etc. Of course, it can also be applied to terminals such as computers.
  • the input information refers to the information input by the user through the mobile terminal, which is used to determine the initial state of the fluid element, wherein the fluid element refers to the element used for drawing ink paintings, such as water, ink, etc.
  • the input information may include the user
  • the selection information of fluid elements, such as the proportion of ink and water, the color of ink, etc., also includes the user's drawing track on the user terminal.
  • the drawing track can be the user's touch screen on the touch screen of the user terminal. drawn trajectory.
  • the image processing method provided by the present disclosure is applied to the simulation of ink painting, the user draws ink painting on a mobile terminal (such as a tablet computer), and the mobile terminal receives input information, and generate a first image of the fluid element in an initial state based on the input information, wherein the input information may include fluid element selection information and drawing track information, wherein the fluid element selection information is used to determine the type of the fluid element and the fluid The color of the element, the drawing radius, etc., based on the input information, the initial state of the fluid element can be determined.
  • the initial state of the fluid element refers to the initial display state of the fluid element based on the user's input information.
  • the fluid element is displayed on the drawn track, and the first image is generated.
  • the flow state of the fluid element is determined according to a preset fluid simulation algorithm, wherein the fluid simulation algorithm will simulate the flow of the fluid, and the fluid element will leave a flow trajectory in the process of flowing, based on the flow trajectory
  • a second image is generated, based on the second image, the stop state of the fluid element is determined, and a third image is generated, wherein the water in the fluid element will disappear with a certain evaporation coefficient during the flow process, and the ink in the fluid element will eventually solidify , a third image is formed based on the curing of the ink.
  • a simulated ink painting image is generated and displayed.
  • the embodiment of the present disclosure generates a first image of the fluid element in the initial state by receiving input information, determines the flow state of the fluid element based on the first image and the fluid simulation algorithm, generates a second image, and then determines based on the second image.
  • the stop state of the fluid element is obtained, the third image is obtained, the image processing is divided into three layers, and the initial state, flow state and stop state of the fluid element are described respectively, and the simulation of the fluid flow and solidification process is more realistic.
  • the simulation effect is more realistic, and it is easy for users to get started.
  • the fluid elements include: water elements and/or ink elements;
  • the stopped state of the water element means that the water element evaporates and disappears, and the stopped state of the ink element means that the ink element is solidified.
  • the fluid element may be water or ink, optionally, water and ink in a certain ratio, wherein the ratio can be freely selected by the user.
  • the stop state of the water element means that water evaporates and disappears according to a certain evaporation coefficient
  • the stop state of the ink element means that the ink element is solidified, wherein the solidification of the ink element It is to simulate the state where the ink element is dry on the paper and not flowing.
  • the water element evaporates, it is evaporated exponentially in a preset ratio.
  • the water element in the unit area is lower than a certain value, it is determined that the water element in the unit area has been evaporated, and the water element in the unit area is determined to be evaporated. The water element is no longer displayed.
  • the ink element will be fixed on the flow trajectory according to a certain proportion, until the ink element per unit area is lower than a certain value, the ink element will not flow.
  • the method further includes:
  • Step S201 synthesizing the first image, the second image and the third image, and rendering and displaying the synthesized image.
  • the first image, the second image, and the third image need to be displayed, the first image, the second image, and the third image need to be synthesized, and the synthesized image needs to be rendered after rendering. exhibit.
  • the first image 301 , the second image 302 , and the third image 303 are all dynamic image layers.
  • the synthesis moment it refers to the synthesis of the three images at the moment, and
  • the three images refer to the first image, the second image and the third image that have been formed at the corresponding moment.
  • the first image at the current moment The image directly selects the image at the current moment, and the second image at the current moment is formed based on the second image at the previous moment and the first image at the previous moment. For example, based on the first image at the previous moment, the last moment can be generated.
  • the fluid element is still in a flowing state, and will continue to generate the second image based on the first image.
  • the second image at the current moment is generated based on the second image at the previous moment and the first image at the current moment.
  • the second image is obtained.
  • the third image is formed according to the third image at the previous moment and the third image generated according to the second at the current moment.
  • the ink painting simulation effect can be displayed in real time.
  • the embodiment of the present disclosure provides a possible implementation manner, in which the fluid simulation algorithm is specifically a grid Boltzmann algorithm.
  • the fluid simulation algorithm adopts the LBE (Lattice Boltzmann Equation, grid Boltzmann equation) algorithm, and the flow of the fluid element is simulated by this algorithm.
  • LBE Longce Boltzmann Equation, grid Boltzmann equation
  • each layer is decomposed into grids, and the fluid elements on each grid particle will flow into connected grids.
  • the fluid element in the grid instance flows to a grid instance, it will collide.
  • the flow velocity and direction of the fluid element on the grid instance are determined by the flow velocity and direction of the fluid element flowing to the grid particle.
  • the vector of the fluid element on the grid instance after the collision is the vector sum of the fluid elements flowing on the grid particle.
  • each fluid flowing on the grid particle A The vectors of the fluid are (1, 0), (0.5, 0.5), (0, 0.5), (-0.5, 0.5), (-1, 0), (-0.5, -0.8), (0, -1) , (0.5, 0.8), after each fluid element collides on the grid particle A, the vector of the fluid element on the grid particle is (0, 0.5), where the vector represents the fluid element on the grid particle. Flow speed and flow direction.
  • the LBE algorithm is used to simulate the flow of fluid elements, which can truly simulate the flow of water and ink on paper, and the simulation effect of ink painting is better.
  • the embodiment of the present disclosure provides a possible implementation manner, in which the grid points in the grid Boltzmann algorithm have drag coefficients for the flow process of the fluid element.
  • a damping coefficient is added to the mesh particles.
  • the damping coefficient can be obtained by scanning the paper, and using The preset texture format is stored in the mesh particles, and each mesh particle will store a damping coefficient.
  • the fluid element flows through the mesh particle, its flow speed will decrease in proportion to the damping coefficient until the fluid element Stop the flow.
  • the embodiment of the present disclosure provides a possible implementation manner, in which, in the grid Boltzmann algorithm, the attribute value of the grid point is calculated based on the corrected fluid velocity of the fluid element;
  • the corrected fluid velocity is obtained by correcting the average fluid velocity of the fluid element based on the correction coefficient of the fluid element; the correction coefficient is determined based on the density of the fluid element.
  • the standard LBE algorithm when using the LBE algorithm to simulate the flow of fluid elements, in order to ensure that the fluid originally flows from a place without water to a place with water, the standard LBE algorithm will make the fluid density on some grid particles If it is a negative number, it leads to non-physical phenomena. Therefore, in the LBE algorithm in the embodiment of the present disclosure, when calculating the attribute quantity of the equilibrium state of the grid particles, the calculation is performed based on the corrected fluid velocity of the fluid element.
  • the corrected fluid velocity is obtained by correcting the average fluid velocity of the fluid element based on a correction coefficient of the fluid element; the correction coefficient is determined based on the density of the fluid element.
  • the property quantity of the grid particle in the equilibrium state refers to the flow property of the fluid element in the grid particle in the equilibrium state, and its calculation formula is as follows:
  • d i w i ⁇ 1 + ⁇ 2 [ ⁇ 1 u i ⁇ v+ ⁇ 2 (u i ⁇ v) 2 + ⁇ 3 v ⁇ v] ⁇
  • i is an integer in the range of 1 to 9, which identifies the nine-neighbor grid of the current grid particle
  • w i is a preset parameter. 0.111 is used for the calculation of the grids of the upper, lower, left, and right neighborhoods, and 0.028 if the calculation is performed on the upper-left, lower-left, upper-right or lower-right grids.
  • ⁇ 1 represents the current fluid density
  • ⁇ 2 represents the average fluid density
  • u i represents the vector difference between the i grid and the current grid position
  • v is the fluid velocity of the fluid element in the current grid
  • ⁇ 1 , ⁇ 2 and ⁇ 3 are three preset parameters, which are 3, 4.5 and -1.5 respectively , where the correction coefficient ⁇ is calculated as:
  • a correction coefficient is used to correct the fluid flow velocity, so as to ensure that no non-physical phenomenon occurs in the simulation of the fluid operation.
  • the embodiment of the present disclosure provides a possible implementation manner.
  • the fluid element includes a water element and an ink element
  • the flow state of the ink element is determined according to the flow state of the water element.
  • the fluid element may be composed of water and ink in a certain proportion.
  • the flow state of the ink element is determined according to the flow state of the water element.
  • the ink element is correspondingly in a solidified state and no longer flows.
  • the embodiment of the present disclosure provides a possible implementation manner, in which the input information is determined according to the target object recognized in the input image.
  • the input information may be determined according to the target object identified in the input image.
  • the image data can be a picture or a video.
  • it is a video showing a person. If it is determined that the target object in the video is the person's hand, it can be based on the person's hand.
  • the movement of the hand determines the input information, and optionally, fluid elements can be displayed on the trajectory of the character's hand movement.
  • the embodiments of the present disclosure increase the usage scenarios of image processing by determining the first image of the fluid element based on the target object in the input image.
  • the embodiment of the present disclosure provides a possible implementation manner, in which the input information is determined according to a user drawing operation.
  • the input information is determined based on a user's drawing operation, and optionally, it may be a user's drawing operation on an image drawing interface, where the image drawing interface may be displayed on a display screen that supports touch-screen clicks
  • the interface such as the interface displayed by the touch screen mobile phone, the interface displayed by the touch screen tablet computer, etc., can also be the interface displayed in the ordinary display screen.
  • the display can be connected with external devices such as a mouse and a keyboard, and the user can Image drawing operations.
  • the picture drawing operation can be the operation of the user clicking to start the APP, or the operation of the user clicking the picture drawing function in the APP, or the user's voice operation, gesture operation, etc.
  • the drawing operation can include the user's operation on the picture drawing interface. It is a paint selection operation, a painting operation, etc. Based on the painting operation, the composition, amount and display area of the fluid element can be determined.
  • the user by determining the first image of the fluid element based on the user's drawing operation, the user can operate freely, and the degree of freedom of drawing is large.
  • the embodiment of the present disclosure generates a first image of the fluid element in an initial state by receiving input information, determines the flow state of the fluid element based on the first image and the fluid simulation algorithm, generates a second image, and then determines based on the second image.
  • the stop state of the fluid element is obtained, the third image is obtained, the image processing is divided into three layers, and the initial state, flow state and stop state of the fluid element are described respectively, and the simulation of the fluid flow and solidification process is more realistic.
  • the simulation effect is more realistic, and it is easy for users to get started.
  • the image processing apparatus 50 includes a first image generation module 510 , a second image generation module 520 , and a third image generation module 530 , wherein,
  • the first image generation module 510 is used to generate the first image of the fluid element in the initial state based on the input information; the input information is used to determine the initial state of the fluid element;
  • a second image generation module 520 configured to determine the flow state of the fluid element with a fluid simulation algorithm based on the first image to obtain a second image
  • the third image generation module 530 is configured to determine the stop state of the fluid element based on the second image to obtain a third image.
  • the fluid elements include: water elements and/or ink elements;
  • the stopped state of the water element means that the water element evaporates and disappears, and the stopped state of the ink element means that the ink element is solidified.
  • the device further includes a display module for:
  • the first image, the second image and the third image are synthesized, and the synthesized image is rendered and displayed.
  • the fluid simulation algorithm is specifically a grid Boltzmann algorithm.
  • the grid points in the grid Boltzmann algorithm have drag coefficients for the flow process of the fluid element.
  • the attribute values of grid points are calculated based on the corrected fluid velocity of the fluid element; the corrected fluid velocity is based on the correction coefficient of the fluid element to the fluid.
  • the average fluid velocity of the element is corrected; the correction factor is determined based on the density of the fluid element.
  • the greater the density of the fluid element the greater the correction coefficient.
  • the flow state of the ink element is determined according to the flow state of the water element.
  • the input information is determined according to the target object identified in the input image.
  • the input information is determined according to a user drawing operation.
  • the image processing apparatus in the embodiments of the present disclosure can execute the image processing methods shown in the above-mentioned embodiments of the present disclosure, and the implementation principles thereof are similar, which will not be repeated here.
  • the embodiment of the present disclosure generates a first image of the fluid element in an initial state by receiving input information, determines the flow state of the fluid element based on the first image and the fluid simulation algorithm, generates a second image, and then determines based on the second image.
  • the stop state of the fluid element is obtained, the third image is obtained, the image processing is divided into three layers, and the initial state, flow state and stop state of the fluid element are described respectively, and the simulation of the fluid flow and solidification process is more realistic.
  • the simulation effect is more realistic, and it is easy for users to get started.
  • Terminal devices in the embodiments of the present disclosure may include, but are not limited to, such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablets), PMPs (portable multimedia players), vehicle-mounted terminals (eg, mobile terminals such as in-vehicle navigation terminals), etc., and stationary terminals such as digital TVs, desktop computers, and the like.
  • the electronic device shown in FIG. 6 is only an example, and should not impose any limitation on the function and scope of use of the embodiments of the present disclosure.
  • the electronic device includes: a memory and a processor, where the processor here may be referred to as a processing device 601 below, and the memory may include a read-only memory (ROM) 602, a random access memory (RAM) 603, and a storage device 608 below. at least one of the following:
  • an electronic device 600 may include a processing device (eg, a central processing unit, a graphics processor, etc.) 601, which may be loaded into random access according to a program stored in a read only memory (ROM) 602 or from a storage device 608 Various appropriate actions and processes are executed by the programs in the memory (RAM) 603 . In the RAM 603, various programs and data required for the operation of the electronic device 600 are also stored.
  • the processing device 601, the ROM 602, and the RAM 603 are connected to each other through a bus 604.
  • An input/output (I/O) interface 605 is also connected to bus 604 .
  • I/O interface 605 input devices 606 including, for example, a touch screen, touchpad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, etc.; including, for example, a liquid crystal display (LCD), speakers, vibration An output device 607 of a computer, etc.; a storage device 608 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 609.
  • Communication means 609 may allow electronic device 600 to communicate wirelessly or by wire with other devices to exchange data. While FIG. 6 shows electronic device 600 having various means, it should be understood that not all of the illustrated means are required to be implemented or provided. More or fewer devices may alternatively be implemented or provided.
  • embodiments of the present disclosure include a computer program product comprising a computer program carried on a non-transitory computer readable medium, the computer program containing program code for performing the method illustrated in the flowchart.
  • the computer program may be downloaded and installed from the network via the communication device 609, or from the storage device 608, or from the ROM 602.
  • the processing apparatus 601 the above-mentioned functions defined in the methods of the embodiments of the present disclosure are executed.
  • the computer-readable medium mentioned above in the present disclosure may be a computer-readable signal medium or a computer-readable storage medium, or any combination of the above two.
  • the computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus or device, or a combination of any of the above. More specific examples of computer readable storage media may include, but are not limited to, electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read only memory (ROM), erasable Programmable read only memory (EPROM or flash memory), fiber optics, portable compact disk read only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.
  • a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.
  • a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave with computer-readable program code embodied thereon. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing.
  • a computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device .
  • Program code embodied on a computer readable medium may be transmitted using any suitable medium including, but not limited to, electrical wire, optical fiber cable, RF (radio frequency), etc., or any suitable combination of the foregoing.
  • the client and server can use any currently known or future developed network protocol such as HTTP (HyperText Transfer Protocol) to communicate, and can communicate with digital data in any form or medium Communication (eg, a communication network) interconnects.
  • HTTP HyperText Transfer Protocol
  • Examples of communication networks include local area networks (“LAN”), wide area networks (“WAN”), the Internet (eg, the Internet), and peer-to-peer networks (eg, ad hoc peer-to-peer networks), as well as any currently known or future development network of.
  • the above-mentioned computer-readable medium may be included in the above-mentioned electronic device; or may exist alone without being assembled into the electronic device.
  • the above-mentioned computer-readable medium carries one or more programs, and when the above-mentioned one or more programs are executed by the electronic device, the electronic device: based on the input information, generate a first image of the fluid element in an initial state; the input The information is used to determine the initial state of the fluid element; based on the first image, a fluid simulation algorithm is used to determine the flow state of the fluid element to obtain a second image; based on the second image, determine the flow state of the fluid element Stop state, get the third image.
  • Computer program code for performing operations of the present disclosure may be written in one or more programming languages, including but not limited to object-oriented programming languages—such as Java, Smalltalk, C++, and This includes conventional procedural programming languages - such as the "C" language or similar programming languages.
  • the program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer, or entirely on the remote computer or server.
  • the remote computer may be connected to the user's computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (eg, using an Internet service provider through Internet connection).
  • LAN local area network
  • WAN wide area network
  • each block in the flowchart or block diagrams may represent a module, segment, or portion of code that contains one or more functions for implementing the specified logical function(s) executable instructions.
  • the functions noted in the blocks may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved.
  • each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations can be implemented in dedicated hardware-based systems that perform the specified functions or operations , or can be implemented in a combination of dedicated hardware and computer instructions.
  • the modules or units involved in the embodiments of the present disclosure may be implemented in software or hardware.
  • exemplary types of hardware logic components include: Field Programmable Gate Arrays (FPGAs), Application Specific Integrated Circuits (ASICs), Application Specific Standard Products (ASSPs), Systems on Chips (SOCs), Complex Programmable Logical Devices (CPLDs) and more.
  • FPGAs Field Programmable Gate Arrays
  • ASICs Application Specific Integrated Circuits
  • ASSPs Application Specific Standard Products
  • SOCs Systems on Chips
  • CPLDs Complex Programmable Logical Devices
  • a machine-readable medium may be a tangible medium that may contain or store a program for use by or in connection with the instruction execution system, apparatus or device.
  • the machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium.
  • Machine-readable media may include, but are not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or devices, or any suitable combination of the foregoing.
  • machine-readable storage media would include one or more wire-based electrical connections, portable computer disks, hard disks, random access memory (RAM), read only memory (ROM), erasable programmable read only memory (EPROM or flash memory), fiber optics, compact disk read only memory (CD-ROM), optical storage, magnetic storage, or any suitable combination of the foregoing.
  • RAM random access memory
  • ROM read only memory
  • EPROM or flash memory erasable programmable read only memory
  • CD-ROM compact disk read only memory
  • magnetic storage or any suitable combination of the foregoing.
  • a method for drawing pictures based on a user interacting with a user includes:
  • a fluid simulation algorithm is used to determine the flow state of the fluid element to obtain a second image
  • a stop state of the fluid element is determined, resulting in a third image.
  • the fluid elements include: water elements and/or ink elements;
  • the stopped state of the water element means that the water element evaporates and disappears, and the stopped state of the ink element means that the ink element is solidified.
  • the method further includes:
  • the first image, the second image and the third image are synthesized, and the synthesized image is rendered and displayed.
  • the fluid simulation algorithm is specifically a grid Boltzmann algorithm.
  • the grid points in the grid Boltzmann algorithm have drag coefficients for the flow process of the fluid element.
  • the attribute values of grid points are calculated based on the corrected fluid velocity of the fluid element; the corrected fluid velocity is based on the correction coefficient of the fluid element to the fluid.
  • the average fluid velocity of the element is corrected; the correction factor is determined based on the density of the fluid element.
  • the greater the density of the fluid element the greater the correction coefficient.
  • the flow state of the ink element is determined according to the flow state of the water element.
  • the input information is determined according to the target object identified in the input image.
  • the input information is determined according to a user drawing operation.
  • an image processing apparatus includes:
  • a first image generation module configured to generate a first image in which the fluid element is in an initial state based on input information; the input information is used to determine the initial state of the fluid element;
  • a second image generation module configured to determine the flow state of the fluid element with a fluid simulation algorithm based on the first image to obtain a second image
  • a third image generation module is configured to determine the stop state of the fluid element based on the second image to obtain a third image.
  • the fluid elements include: water elements and/or ink elements;
  • the stopped state of the water element means that the water element evaporates and disappears, and the stopped state of the ink element means that the ink element is solidified.
  • the device further includes a display module for:
  • the first image, the second image and the third image are synthesized, and the synthesized image is rendered and displayed.
  • the fluid simulation algorithm is specifically a grid Boltzmann algorithm.
  • the grid points in the grid Boltzmann algorithm have drag coefficients for the flow process of the fluid element.
  • the attribute value of the grid point is calculated based on the corrected fluid velocity of the fluid element; the corrected fluid velocity is based on the correction coefficient of the fluid element to the fluid.
  • the average fluid velocity of the element is corrected; the correction factor is determined based on the density of the fluid element.
  • the greater the density of the fluid element the greater the correction coefficient.
  • the flow state of the ink element is determined according to the flow state of the water element.
  • the input information is determined according to the target object identified in the input image.
  • the input information is determined according to a user drawing operation.
  • an electronic device comprising:
  • processors one or more processors
  • One or more application programs wherein the one or more application programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs are configured to: perform the above-described image processing method.
  • a computer-readable medium stores at least one instruction, at least one piece of program, code set or instruction set, at least one instruction, at least one piece of program, code
  • the set or instruction set is loaded and executed by the processor to implement the image processing method described above.

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Abstract

本公开提供了一种图像处理方法、装置、电子设备及计算机可读介质，涉及图像处理技术领域。该方法包括：基于输入信息，生成流体元素处于初始状态的第一图像；基于第一图像，以流体模拟算法确定流体元素的流动状态，得到第二图像；基于第二图像，确定流体元素的停止状态，得到第三图像。本公开实施例通过接收输入信息，生成流体元素处于初始状态的第一图像，并基于该第一图像和流体模拟算法确定流体元素的流动状态，并生成第二图像，再基于该第二图像确定流体元素的停止状态，得到第三图像，将图像的处理分为三层，对流体的流动、固化过程的模拟更加真实，对于水墨画仿真领域，仿真效果更逼真，用户上手容易。

Description

图像处理方法、装置、电子设备及计算机可读介质
相关申请的交叉引用
本申请要求于2020年10月27日提交的，申请号为202011163822.3、发明名称为“图像处理方法、装置、电子设备及计算机可读介质”的中国专利申请的优先权，该申请的全文通过引用结合在本申请中。
技术领域
本公开涉及图像处理技术领域，具体而言，本公开涉及一种图像处理方法、装置、电子设备及计算机可读介质。
背景技术
随着图像处理技术的提升，计算机的图像处理能力越来越强，在计算机上进行水墨画的模拟使得用户可以通过计算机绘制出水墨画。
在现有的水墨画仿真技术中，需要对水墨颜料在纸张上的洒墨、扩散、交融、固化、蒸发、受重力向下流动、因纸张材质而形成特定轮廓等现象进行模拟，需要计算有较高的计算能力，目前在电脑上的仿真效果都不佳，在移动端上的模拟更是没有响应的技术手段，而现阶段的用户，对移动终端的使用更多，因此需要一种能够在移动端对 水墨画进行仿真的技术。
由此可见，现有技术中，水墨画仿真技术需要计算机具有较强的计算能力，移动端还没有相应的仿真技术。
发明内容
本公开的目的旨在至少能解决上述的技术缺陷之一，特别是现有的水墨画仿真产品，适用对象都是有绘画基础的用户，用户适用范围不广的技术缺陷。
第一方面，提供了一种图像处理方法，该方法包括：
基于输入信息，生成流体元素处于初始状态的第一图像；所述输入信息用于确定所述流体元素的初始状态；
基于所述第一图像，以流体模拟算法确定所述流体元素的流动状态，得到第二图像；
基于所述第二图像，确定所述流体元素的停止状态，得到第三图像。
第二方面，提供了一种基于用交互户的图画绘制装置，该装置包括：
第一图像生成模块，用于基于输入信息，生成流体元素处于初始状态的第一图像；所述输入信息用于确定所述流体元素的初始状态；
第二图像生成模块，用于基于所述第一图像，以流体模拟算法确定所述流体元素的流动状态，得到第二图像；
第三图像生成模块，用于基于所述第二图像，确定所述流体元素 的停止状态，得到第三图像。
第三方面，提供了一种电子设备，该电子设备包括：
一个或多个处理器；
存储器；
一个或多个应用程序，其中一个或多个应用程序被存储在存储器中并被配置为由一个或多个处理器执行，一个或多个程序配置用于：执行上述的基于用交互户的图画绘制方法。
第四方面，提供了一种计算机可读存储介质，可读介质存储有至少一条指令、至少一段程序、代码集或指令集，至少一条指令、至少一段程序、代码集或指令集由处理器加载并执行以实现上述的图像处理方法。
本公开实施例通过接收输入信息，生成流体元素处于初始状态的第一图像，并基于该第一图像和流体模拟算法确定流体元素的流动状态，并生成第二图像，再基于该第二图像确定流体元素的停止状态，得到第三图像，将图像的处理分为三层，且分别对流体元素的初始状态、流动状态和停止状态进行描述，对流体的流动、固化过程的模拟更加真实，对于水墨画仿真领域，仿真效果更逼真，用户上手容易。
附图说明
为了更清楚地说明本公开实施例中的技术方案，下面将对本公开实施例描述中所需要使用的附图作简单地介绍。
图1为本公开实施例提供的一种图像处理方法的流程示意图；
图2为本公开实施例提供的一种图像展示方法的流程示意图；
图3为本公开实施例提供的一种三张图像的示意图；
图4为本公开实施例提供的一种流体元素流动示意图；
图5为本公开实施例提供的一种图像处理装置的结构示意图；
图6为本公开实施例提供的一种电子设备的结构示意图。
结合附图并参考以下具体实施方式，本公开各实施例的上述和其他特征、优点及方面将变得更加明显。贯穿附图中，相同或相似的附图标记表示相同或相似的元素。应当理解附图是示意性的，原件和元素不一定按照比例绘制。
具体实施方式
下面将参照附图更详细地描述本公开的实施例。虽然附图中显示了本公开的某些实施例，然而应当理解的是，本公开可以通过各种形式来实现，而且不应该被解释为限于这里阐述的实施例，相反提供这些实施例是为了更加透彻和完整地理解本公开。应当理解的是，本公开的附图及实施例仅用于示例性作用，并非用于限制本公开的保护范围。
应当理解，本公开的方法实施方式中记载的各个步骤可以按照不同的顺序执行，和/或并行执行。此外，方法实施方式可以包括附加的步骤和/或省略执行示出的步骤。本公开的范围在此方面不受限制。
本文使用的术语“包括”及其变形是开放性包括，即“包括但不限于”。术语“基于”是“至少部分地基于”。术语“一个实施例”表 示“至少一个实施例”；术语“另一实施例”表示“至少一个另外的实施例”；术语“一些实施例”表示“至少一些实施例”。其他术语的相关定义将在下文描述中给出。
需要注意，本公开中提及的“第一”、“第二”等概念仅用于对装置、模块或单元进行区分，并非用于限定这些装置、模块或单元一定为不同的装置、模块或单元，也并非用于限定这些装置、模块或单元所执行的功能的顺序或者相互依存关系。
需要注意，本公开中提及的“一个”、“多个”的修饰是示意性而非限制性的，本领域技术人员应当理解，除非在上下文另有明确指出，否则应该理解为“一个或多个”。
本公开实施方式中的多个装置之间所交互的消息或者信息的名称仅用于说明性的目的，而并不是用于对这些消息或信息的范围进行限制。
本公开提供的基于用交互户的图画绘制方法、装置、电子设备和计算机可读存储介质，旨在解决现有技术的如上技术问题。
下面以具体地实施例对本公开的技术方案以及本公开的技术方案如何解决上述技术问题进行详细说明。下面这几个具体的实施例可以相互结合，对于相同或相似的概念或过程可能在某些实施例中不再赘述。下面将结合附图，对本公开的实施例进行描述。
本公开实施例中提供了一种基于用交互户的图画绘制方法，如图1所示，该方法包括：
步骤S101，基于输入信息，生成流体元素处于初始状态的第一图 像；所述输入信息用于确定所述流体元素的初始状态；
步骤S102，基于所述第一图像，以流体模拟算法确定所述流体元素的流动状态，得到第二图像；
步骤S103，基于所述第二图像，确定所述流体元素的停止状态，得到第三图像。
在本公开实施例中，提供了一种图像处理方法，主要应用于水墨画仿真技术领域，相当于提供了一种水墨画仿真技术，用于基于用户操作，生成水墨画，主要应用于移动终端，如手机、平板电脑等，当然，也可以应用于电脑等终端。
对于本公开实施例，输入信息是指用户通过移动终端输入的信息，用于确定流体元素的初始状态，其中，流体元素是指用于绘制水墨画的元素，如水、墨等，输入信息可以包括用户对流体元素的选择信息，如水墨比例、墨的颜色等，还包括用户在用户终端上的绘制轨迹，可选的，该绘制轨迹可以是用户通过触屏的方式在用户终端的触摸显示屏上绘制的轨迹。
对于本公开实施例，为方便说明，以一个具体实施例为例，将本公开提供的图像处理方法应用于水墨画仿真，用户在移动终端(如平板电脑)上进行水墨画绘制，该移动终端接收到输入信息，并基于该输入信息生成流体元素处于初始状态的第一图像，其中，该输入信息可以包括流体元素选择信息以及绘制轨迹信息，其中，流体元素选择信息用于确定流体元素的类型和流体元素的颜色、绘制半径等，基于该输入信息，可以确定流体元素的初始状态，流体元素的初始状态是 指基于用户的输入信息流体元素初始展示的状态，可选的，可以是在用户绘制的绘制轨迹上显示流体元素，生成第一图像。基于该第一图像，按照预设的流体模拟算法确定流体元素的流动状态，其中，该流体模拟算法会模拟流体的流动，流体元素在流动的过程中，会留下流动轨迹，基于该流动轨迹生成第二图像，基于该第二图像，确定流体元素的停止状态，并生成第三图像，其中，流体元素中的水在流动过程中会以一定的蒸发系数消失，流体元素中墨会最终固化，基于墨的固化形成第三图像。最终，结合同一时刻的第一图像、第二图像和第三图像，生成水墨画仿真图像，并进行显示。
本公开实施例通过接收输入信息，生成流体元素处于初始状态的第一图像，并基于该第一图像和流体模拟算法确定流体元素的流动状态，并生成第二图像，再基于该第二图像确定流体元素的停止状态，得到第三图像，将图像的处理分为三层，且分别对流体元素的初始状态、流动状态和停止状态进行描述，对流体的流动、固化过程的模拟更加真实，对于水墨画仿真领域，仿真效果更逼真，用户上手容易。
本公开实施例提供了一种可能的实现方式，在该实现方式中，所述流体元素包括：水元素和/或墨元素；
所述水元素的停止状态表示所述水元素蒸发消失，所述墨元素的停止状态表示所述墨元素固化。
在本公开实施例中，流体元素可以是水或墨，可选的，是水和墨以一定的比例组成的，其中，该比例可以由用户自由选择。
对于本公开实施例，在基于第二图像确定流体元素的停止状态时， 水元素的停止状态表示水按照一定的蒸发系数蒸发消失，墨元素的停止状态表示墨元素固化，其中，墨元素的固化是模拟墨元素在纸张上干枯，不在流动的状态。其中，水元素在蒸发时，以预设的比例按照指数形式进行蒸发，当单位面积内的水元素低于一定值时，则判定该单位面积内的水元素蒸发完毕，且该单位面积内的水元素不再显示。墨元素在流动过程中，会按照一定的比例固话在流动轨迹上，直至单位面积内的墨元素低于一定值，则墨元素不在流动。
本公开实施例通过对流体元素中的水元素和墨元素的停止状态进行模拟，模拟水墨画中水的蒸发和墨的干枯，仿真效果好。
本公开实施例提供了一种可能的实现方式，在该实现方式中，如图2所示，该方法还包括：
步骤S201，将所述第一图像、所述第二图像和所述第三图像合成，并对合成后的图像进行渲染展示。
在本公开实施例中，在需要对第一图像、第二图像和第三图像进行展示时，需要对第一图像、第二图像和第三图像进行合成，并对合成后的图像进行渲染后展示。
对于本本公开实施例，如图3所示，第一图像301、第二图像302和第三图像303都是动态的图像层，对于合成时刻，是指将该时刻的三个图像进行合成，而这三个图像是指对应时刻已经形成的第一图像、第二图像和第三图像，为方便说明，以一个具体实施例为例，在对当前时刻的图像进行合成时，当前时刻的第一图像直接选取当前时刻的图像，当前时刻的第二图像是根据上一时刻的第二图像和上一时刻的 第一图像形成的，例如，基于上一时刻的第一图像，可以生成上一时刻的第二图像，此时，流体元素还是流动状态，会持续根据第一图像继续生成第二图像，当前时刻的第二图像就是根据上一时刻的第二图像和当前时刻根据第一图像生成的第二图像得到的，同理，第三图像是根据上一时刻的第三图像和当前时刻根据第二生成的第三图像形成的。在选择第一图像、第二图像和第三图像进行合成时，选取同一时刻已经形成的图像进行合成，并对合成后的图像进行渲染展示。
本公开实施例通过对同一时刻的第一图像、第二图像和第三图像进行合成，并对合成后的图像进行渲染展示，能给实时显示水墨画仿真效果。
本公开实施例提供了一种可能的实现方式，在该实现方式中，所述流体模拟算法具体为网格玻尔兹曼算法。
在本公开实施例中，流体模拟算法采用LBE(Lattice Boltzmann Equation，网格玻尔兹曼方程法)算法，采用该算法对流体元素的流动进行模拟。
对于本公开实施例，在采用LBE算法对流体元素的流动进行模拟时，将每个图层进行网格化分解，每个网格粒子上的流体元素会流动到相连的网格中，不同网格例子中的流体元素在流动到一个网格例子上时，会发生碰撞，碰撞后该网格例子上流体元素的流动速度和方向由流动到该网格粒子上的流体元素的流动速度和方向决定，可选的，碰撞后该网格例子上流体元素的向量为流动到该网格粒子上的各流体元素的向量和，例如，如图4所示，流动到网格粒子A上的各流体 的向量为(1，0)、(0.5，0.5)、(0，0.5)、(-0.5，0.5)、(-1，0)、(-0.5，-0.8)、(0，-1)、(0.5，0.8)，则个流体元素在该网格粒子A上碰撞后，该网格粒子上流体元素的向量为(0，0.5)，其中，该向量表示该网格粒子上流体元素的流动速度和流动方向。
在本公开实施例中，采用LBE算法对流体元素的流动进行模拟，能给真实的模拟水和墨在纸上的流动，水墨画仿真效果更佳。
本公开实施例提供了一种可能的实现方式，在该实现方式中，所述网格玻尔兹曼算法中的网格点具有针对所述流体元素的流动过程的阻力系数。
在本公开实施例中，在采用LBE算法对流体元素的流动进行模拟时，为模拟纸张的阻力，对网格粒子添加阻尼系数，可选的，该阻尼系数可以通过对纸张扫描得到，并以预设的纹理格式存储在网格粒子中，每个网格粒子都会存储有一个阻尼系数，流体元素在流经该网格粒子时，其流动速度会按阻尼系数的比例减小，直至流体元素停止流动。
本公开实施例中通过对网格粒子添加阻尼系数，模拟纸张的阻力，能够保证流体元素不会一直流动，仿真效果更佳真实。
本公开实施例提供了一种可能的实现方式，在该实现方式中，在所述网格玻尔兹曼算法中，网格点的属性值基于所述流体元素的修正流体速度进行计算；所述修正流体速度是基于流体元素的修正系数对所述流体元素的平均流体速度进行修正而得到的；所述修正系数基于所述流体元素的密度确定。
在本公开实施例中，在使用LBE算法对流体元素的流动进行模拟时，为保证流体原从无水的地方流动到有水的地方，标准的LBE算法会使得一些网格粒子上的流体密度为负数，导致产生非物理现象，为此，本公开实施例中的LBE算法中，在计算网格粒子平衡状态的属性量时，是基于流体元素的修正流体速度进行计算的。
对于本公开实施例，所述修正流体速度是基于流体元素的修正系数对所述流体元素的平均流体速度进行修正而得到的；所述修正系数基于所述流体元素的密度确定。网格粒子的平衡状态下的属性量是指网格粒子中流体元素在平衡转态下的流动属性，其计算公式如下：
d i＝w i{ρ 1+ερ 2[α 1u i·v+α 2(u i·v) 2+α 3v·v]}
其中，i取值范围为1到9的整数，标识当前网格粒子的九邻域网格，w i是预设的参数，如果是对当前网格粒子进行计算，则取0.444，如果是对上下左右四邻域的网格进行计算，则取0.111，如果是对左上、左下、右上或右下的网格进行计算，则取0.028，ρ 1表示当前流体密度，ρ 2表示平均流体密度，u i表示i网格与当前网格位置的向量差，v是当前网格中流体元素的流体速度，α 1、α 2和α 3是三个预设的参数，分别取3、4.5和-1.5，其中，修正系数ε的计算方式为：
ε＝(3-2t)·t 2
t＝max(min(2ρ 1，1)，0)
在本公开实施例中，所述流体元素的密度越大，所述修正系数越大。
本公开实施例在计算网格粒子的平衡状态属性时，采用修正系数 对流体流速进行修正，保证对流体运算的模拟不会出现非物理现象。
本公开实施例提供了一种可能的实现方式，在该实现方式中，若流体元素包括水元素和墨元素，所述墨元素的流动状态根据所述水元素的流动状态确定。
在本公开实施例中，流体元素可以是水和墨按照一定比例组成的，流体元素在流动时，墨元素的流动状态是根据水元素的流动状态确定的，可选的，当水元素蒸发完成处于停止状态时，墨元素相应的处于固化状态，不再流动。
本公开实施例提供了一种可能的实现方式，在该实现方式中，所述输入信息是根据输入图像中识别到的目标对象确定的。
对于本公开实施例，在基于输入信息确定流体元素的第一图像时，输入信息可以是根据输入图像中识别到的目标对象确定的，作为本发明一个实施例，基于用户输入的图像数据，确定图像数据中的目标对象，可选的，该图像数据可以是图片，也可以是视频，可选的，是显示有人物的视频，确定该视频中的目标对象为人物的手，则可以基于人物手的动作确定输入信息，可选的，可以在人物的手移动的轨迹上显示流体元素。
本公开实施例通过基于输入图像中的目标对象确定流体元素的第一图像，增加图像处理的使用场景。
本公开实施例提供了一种可能的实现方式，在该实现方式中，所述输入信息是根据用户绘制操作确定的。
在本公开实施例中，输入信息是基于用户的绘制操作确定的，可 选的，可以是用户在图像绘制界面的绘制操作，其中，图像绘制界面可以是支持触屏点击的显示屏中显示的界面，如触屏手机显示的界面、触屏平板电脑显示的界面等，也可以是普通的显示屏中显示的界面，该显示器可以连接有鼠标、键盘等外接设备，用户可以通过该外接设备进行图像绘制操作。图画绘制操作可以是用户点击启动APP的操作，也可以是用户点击APP中图画绘制功能的操作，还可以是用户的语音操作、手势操作等，绘制操作可以包括用户在图画绘制界面的操作，可以是颜料选择操作、绘画操作等，基于该绘制操作，可以确定流体元素的组成、用量以及显示区域。
本公开实施例通过基于用户的绘制操作确定流体元素的第一图像，用户可以自由操作，绘制自由度大。
本公开实施例通过接收输入信息，生成流体元素处于初始状态的第一图像，并基于该第一图像和流体模拟算法确定流体元素的流动状态，并生成第二图像，再基于该第二图像确定流体元素的停止状态，得到第三图像，将图像的处理分为三层，且分别对流体元素的初始状态、流动状态和停止状态进行描述，对流体的流动、固化过程的模拟更加真实，对于水墨画仿真领域，仿真效果更逼真，用户上手容易。
本公开实施例提供了一种图像处理装置，如图5所示，该图像处理装置50包括第一图像生成模块510、第二图像生成模块520、第三图像生成模块530，其中，
第一图像生成模块510，用于基于输入信息，生成流体元素处于初始状态的第一图像；所述输入信息用于确定所述流体元素的初始状 态；
第二图像生成模块520，用于基于所述第一图像，以流体模拟算法确定所述流体元素的流动状态，得到第二图像；
第三图像生成模块530，用于基于所述第二图像，确定所述流体元素的停止状态，得到第三图像。
可选的，所述流体元素包括：水元素和/或墨元素；
所述水元素的停止状态表示所述水元素蒸发消失，所述墨元素的停止状态表示所述墨元素固化。
可选的，该装置还包括展示模块，用于：
将所述第一图像、所述第二图像和所述第三图像合成，并对合成后的图像进行渲染展示。
可选的，所述流体模拟算法具体为网格玻尔兹曼算法。
可选的，所述网格玻尔兹曼算法中的网格点具有针对所述流体元素的流动过程的阻力系数。
可选的，在所述网格玻尔兹曼算法中，网格点的属性值基于所述流体元素的修正流体速度进行计算；所述修正流体速度是基于流体元素的修正系数对所述流体元素的平均流体速度进行修正而得到的；所述修正系数基于所述流体元素的密度确定。
可选的，所述流体元素的密度越大，所述修正系数越大。
可选的，若流体元素包括水元素和墨元素，所述墨元素的流动状态根据所述水元素的流动状态确定。
可选的，所述输入信息是根据输入图像中识别到的目标对象确定 的。
可选的，所述输入信息是根据用户绘制操作确定的。
本公开实施例的图像处理装置可执行本公开上述实施例所示的图像处理方法，其实现原理相类似，此处不再赘述。
本公开实施例通过接收输入信息，生成流体元素处于初始状态的第一图像，并基于该第一图像和流体模拟算法确定流体元素的流动状态，并生成第二图像，再基于该第二图像确定流体元素的停止状态，得到第三图像，将图像的处理分为三层，且分别对流体元素的初始状态、流动状态和停止状态进行描述，对流体的流动、固化过程的模拟更加真实，对于水墨画仿真领域，仿真效果更逼真，用户上手容易。
下面参考图6，其示出了适于用来实现本公开实施例的电子设备600的结构示意图。本公开实施例中的终端设备可以包括但不限于诸如移动电话、笔记本电脑、数字广播接收器、PDA(个人数字助理)、PAD(平板电脑)、PMP(便携式多媒体播放器)、车载终端(例如车载导航终端)等等的移动终端以及诸如数字TV、台式计算机等等的固定终端。图6示出的电子设备仅仅是一个示例，不应对本公开实施例的功能和使用范围带来任何限制。
电子设备包括：存储器以及处理器，其中，这里的处理器可以称为下文的处理装置601，存储器可以包括下文中的只读存储器(ROM)602、随机访问存储器(RAM)603以及存储装置608中的至少一项，具体如下所示：
如图6所示，电子设备600可以包括处理装置(例如中央处理器、 图形处理器等)601，其可以根据存储在只读存储器(ROM)602中的程序或者从存储装置608加载到随机访问存储器(RAM)603中的程序而执行各种适当的动作和处理。在RAM 603中，还存储有电子设备600操作所需的各种程序和数据。处理装置601、ROM 602以及RAM 603通过总线604彼此相连。输入/输出(I/O)接口605也连接至总线604。
通常，以下装置可以连接至I/O接口605：包括例如触摸屏、触摸板、键盘、鼠标、摄像头、麦克风、加速度计、陀螺仪等的输入装置606；包括例如液晶显示器(LCD)、扬声器、振动器等的输出装置607；包括例如磁带、硬盘等的存储装置608；以及通信装置609。通信装置609可以允许电子设备600与其他设备进行无线或有线通信以交换数据。虽然图6示出了具有各种装置的电子设备600，但是应理解的是，并不要求实施或具备所有示出的装置。可以替代地实施或具备更多或更少的装置。
特别地，根据本公开的实施例，上文参考流程图描述的过程可以被实现为计算机软件程序。例如，本公开的实施例包括一种计算机程序产品，其包括承载在非暂态计算机可读介质上的计算机程序，该计算机程序包含用于执行流程图所示的方法的程序代码。在这样的实施例中，该计算机程序可以通过通信装置609从网络上被下载和安装，或者从存储装置608被安装，或者从ROM 602被安装。在该计算机程序被处理装置601执行时，执行本公开实施例的方法中限定的上述功能。
需要说明的是，本公开上述的计算机可读介质可以是计算机可读信号介质或者计算机可读存储介质或者是上述两者的任意组合。计算机可读存储介质例如可以是——但不限于——电、磁、光、电磁、红外线、或半导体的系统、装置或器件，或者任意以上的组合。计算机可读存储介质的更具体的例子可以包括但不限于：具有一个或多个导线的电连接、便携式计算机磁盘、硬盘、随机访问存储器(RAM)、只读存储器(ROM)、可擦式可编程只读存储器(EPROM或闪存)、光纤、便携式紧凑磁盘只读存储器(CD-ROM)、光存储器件、磁存储器件、或者上述的任意合适的组合。在本公开中，计算机可读存储介质可以是任何包含或存储程序的有形介质，该程序可以被指令执行系统、装置或者器件使用或者与其结合使用。而在本公开中，计算机可读信号介质可以包括在基带中或者作为载波一部分传播的数据信号，其中承载了计算机可读的程序代码。这种传播的数据信号可以采用多种形式，包括但不限于电磁信号、光信号或上述的任意合适的组合。计算机可读信号介质还可以是计算机可读存储介质以外的任何计算机可读介质，该计算机可读信号介质可以发送、传播或者传输用于由指令执行系统、装置或者器件使用或者与其结合使用的程序。计算机可读介质上包含的程序代码可以用任何适当的介质传输，包括但不限于：电线、光缆、RF(射频)等等，或者上述的任意合适的组合。
在一些实施方式中，客户端、服务器可以利用诸如HTTP(HyperText Transfer Protocol，超文本传输协议)之类的任何当前已知或未来研发的网络协议进行通信，并且可以与任意形式或介质的数 字数据通信(例如，通信网络)互连。通信网络的示例包括局域网(“LAN”)，广域网(“WAN”)，网际网(例如，互联网)以及端对端网络(例如，ad hoc端对端网络)，以及任何当前已知或未来研发的网络。
上述计算机可读介质可以是上述电子设备中所包含的；也可以是单独存在，而未装配入该电子设备中。
上述计算机可读介质承载有一个或者多个程序，当上述一个或者多个程序被该电子设备执行时，使得该电子设备：基于输入信息，生成流体元素处于初始状态的第一图像；所述输入信息用于确定所述流体元素的初始状态；基于所述第一图像，以流体模拟算法确定所述流体元素的流动状态，得到第二图像；基于所述第二图像，确定所述流体元素的停止状态，得到第三图像。
可以以一种或多种程序设计语言或其组合来编写用于执行本公开的操作的计算机程序代码，上述程序设计语言包括但不限于面向对象的程序设计语言—诸如Java、Smalltalk、C++，还包括常规的过程式程序设计语言—诸如“C”语言或类似的程序设计语言。程序代码可以完全地在用户计算机上执行、部分地在用户计算机上执行、作为一个独立的软件包执行、部分在用户计算机上部分在远程计算机上执行、或者完全在远程计算机或服务器上执行。在涉及远程计算机的情形中，远程计算机可以通过任意种类的网络——包括局域网(LAN)或广域网(WAN)—连接到用户计算机，或者，可以连接到外部计算机(例如利用因特网服务提供商来通过因特网连接)。
附图中的流程图和框图，图示了按照本公开各种实施例的系统、方法和计算机程序产品的可能实现的体系架构、功能和操作。在这点上，流程图或框图中的每个方框可以代表一个模块、程序段、或代码的一部分，该模块、程序段、或代码的一部分包含一个或多个用于实现规定的逻辑功能的可执行指令。也应当注意，在有些作为替换的实现中，方框中所标注的功能也可以以不同于附图中所标注的顺序发生。例如，两个接连地表示的方框实际上可以基本并行地执行，它们有时也可以按相反的顺序执行，这依所涉及的功能而定。也要注意的是，框图和/或流程图中的每个方框、以及框图和/或流程图中的方框的组合，可以用执行规定的功能或操作的专用的基于硬件的系统来实现，或者可以用专用硬件与计算机指令的组合来实现。
描述于本公开实施例中所涉及到的模块或单元可以通过软件的方式实现，也可以通过硬件的方式来实现。
本文中以上描述的功能可以至少部分地由一个或多个硬件逻辑部件来执行。例如，非限制性地，可以使用的示范类型的硬件逻辑部件包括：现场可编程门阵列(FPGA)、专用集成电路(ASIC)、专用标准产品(ASSP)、片上系统(SOC)、复杂可编程逻辑设备(CPLD)等等。
在本公开的上下文中，机器可读介质可以是有形的介质，其可以包含或存储以供指令执行系统、装置或设备使用或与指令执行系统、装置或设备结合地使用的程序。机器可读介质可以是机器可读信号介质或机器可读储存介质。机器可读介质可以包括但不限于电子的、磁 性的、光学的、电磁的、红外的、或半导体系统、装置或设备，或者上述内容的任何合适组合。机器可读存储介质的更具体示例会包括基于一个或多个线的电气连接、便携式计算机盘、硬盘、随机存取存储器(RAM)、只读存储器(ROM)、可擦除可编程只读存储器(EPROM或快闪存储器)、光纤、便捷式紧凑盘只读存储器(CD-ROM)、光学储存设备、磁储存设备、或上述内容的任何合适组合。
根据本公开提供的一个或多个实施例，提供了一种基于用交互户的图画绘制方法，该方法包括：
基于输入信息，生成流体元素处于初始状态的第一图像；所述输入信息用于确定所述流体元素的初始状态；
基于所述第一图像，以流体模拟算法确定所述流体元素的流动状态，得到第二图像；
基于所述第二图像，确定所述流体元素的停止状态，得到第三图像。
可选的，所述流体元素包括：水元素和/或墨元素；
所述水元素的停止状态表示所述水元素蒸发消失，所述墨元素的停止状态表示所述墨元素固化。
可选的，该方法还包括：
将所述第一图像、所述第二图像和所述第三图像合成，并对合成后的图像进行渲染展示。
可选的，所述流体模拟算法具体为网格玻尔兹曼算法。
可选的，所述网格玻尔兹曼算法中的网格点具有针对所述流体元 素的流动过程的阻力系数。
可选的，在所述网格玻尔兹曼算法中，网格点的属性值基于所述流体元素的修正流体速度进行计算；所述修正流体速度是基于流体元素的修正系数对所述流体元素的平均流体速度进行修正而得到的；所述修正系数基于所述流体元素的密度确定。
可选的，所述流体元素的密度越大，所述修正系数越大。
可选的，若流体元素包括水元素和墨元素，所述墨元素的流动状态根据所述水元素的流动状态确定。
可选的，所述输入信息是根据输入图像中识别到的目标对象确定的。
可选的，所述输入信息是根据用户绘制操作确定的。
根据本公开提供的一个或多个实施例，提供了一种图像处理装置，该装置包括：
第一图像生成模块，用于基于输入信息，生成流体元素处于初始状态的第一图像；所述输入信息用于确定所述流体元素的初始状态；
第二图像生成模块，用于基于所述第一图像，以流体模拟算法确定所述流体元素的流动状态，得到第二图像；
第三图像生成模块，用于基于所述第二图像，确定所述流体元素的停止状态，得到第三图像。
可选的，所述流体元素包括：水元素和/或墨元素；
所述水元素的停止状态表示所述水元素蒸发消失，所述墨元素的停止状态表示所述墨元素固化。
可选的，该装置还包括展示模块，用于：
将所述第一图像、所述第二图像和所述第三图像合成，并对合成后的图像进行渲染展示。
可选的，所述流体模拟算法具体为网格玻尔兹曼算法。
可选的，所述网格玻尔兹曼算法中的网格点具有针对所述流体元素的流动过程的阻力系数。
可选的，在所述网格玻尔兹曼算法中，网格点的属性值基于所述流体元素的修正流体速度进行计算；所述修正流体速度是基于流体元素的修正系数对所述流体元素的平均流体速度进行修正而得到的；所述修正系数基于所述流体元素的密度确定。
可选的，所述流体元素的密度越大，所述修正系数越大。
可选的，若流体元素包括水元素和墨元素，所述墨元素的流动状态根据所述水元素的流动状态确定。
可选的，所述输入信息是根据输入图像中识别到的目标对象确定的。
可选的，所述输入信息是根据用户绘制操作确定的。
根据本公开提供的一个或多个实施例，提供了一种电子设备，其包括：
一个或多个处理器；
存储器；
一个或多个应用程序，其中一个或多个应用程序被存储在存储器中并被配置为由一个或多个处理器执行，一个或多个程序配置用于： 执行上述的图像处理方法。
根据本公开提供的一个或多个实施例，提供了一种计算机可读介质，该可读介质存储有至少一条指令、至少一段程序、代码集或指令集，至少一条指令、至少一段程序、代码集或指令集由处理器加载并执行以实现上述的图像处理方法。
以上描述仅为本公开的较佳实施例以及对所运用技术原理的说明。本领域技术人员应当理解，本公开中所涉及的公开范围，并不限于上述技术特征的特定组合而成的技术方案，同时也应涵盖在不脱离上述公开构思的情况下，由上述技术特征或其等同特征进行任意组合而形成的其它技术方案。例如上述特征与本公开中公开的(但不限于)具有类似功能的技术特征进行互相替换而形成的技术方案。
此外，虽然采用特定次序描绘了各操作，但是这不应当理解为要求这些操作以所示出的特定次序或以顺序次序执行来执行。在一定环境下，多任务和并行处理可能是有利的。同样地，虽然在上面论述中包含了若干具体实现细节，但是这些不应当被解释为对本公开的范围的限制。在单独的实施例的上下文中描述的某些特征还可以组合地实现在单个实施例中。相反地，在单个实施例的上下文中描述的各种特征也可以单独地或以任何合适的子组合的方式实现在多个实施例中。
尽管已经采用特定于结构特征和/或方法逻辑动作的语言描述了本主题，但是应当理解所附权利要求书中所限定的主题未必局限于上面描述的特定特征或动作。相反，上面所描述的特定特征和动作仅仅是实现权利要求书的示例形式。

Claims (13)

  1. 一种图像处理方法，其特征在于，包括：
    基于输入信息，生成流体元素处于初始状态的第一图像；所述输入信息用于确定所述流体元素的初始状态；
    基于所述第一图像，以流体模拟算法确定所述流体元素的流动状态，得到第二图像；
    基于所述第二图像，确定所述流体元素的停止状态，得到第三图像。
  2. 根据权利要求1所述的方法，其特征在于，所述流体元素包括：水元素和/或墨元素；
    所述水元素的停止状态表示所述水元素蒸发消失，所述墨元素的停止状态表示所述墨元素固化。
  3. 根据权利要求1所述的方法，其特征在于，还包括：
    将所述第一图像、所述第二图像和所述第三图像合成，并对合成后的图像进行渲染展示。
  4. 根据权利要求1所述的方法，其特征在于，所述流体模拟算法具体为网格玻尔兹曼算法。
  5. 根据权利要求4所述的方法，其特征在于，所述网格玻尔兹曼算法中的网格点具有针对所述流体元素的流动过程的阻力系数。
  6. 根据权利要求4所述的方法，其特征在于，在所述网格玻尔兹曼算法中，网格点的属性值基于所述流体元素的修正流体速度进行计算；所述修正流体速度是基于流体元素的修正系数对所述流体元素的平均流体速度进行修正而得到的；所述修正系数基于所述流体元素 的密度确定。
  7. 根据权利要求6所述的方法，其特征在于，所述流体元素的密度越大，所述修正系数越大。
  8. 根据权利要求2所述的方法，其特征在于，若流体元素包括水元素和墨元素，所述墨元素的流动状态根据所述水元素的流动状态确定。
  9. 根据权利要求1所述的方法，其特征在于，所述输入信息是根据输入图像中识别到的目标对象确定的。
  10. 根据权利要求1所述的方法，其特征在于，所述输入信息是根据用户绘制操作确定的。
  11. 一种图像处理装置，其特征在于，包括：
    第一图像生成模块，用于基于输入信息，生成流体元素处于初始状态的第一图像；所述输入信息用于确定所述流体元素的初始状态；
    第二图像生成模块，用于基于所述第一图像，以流体模拟算法确定所述流体元素的流动状态，得到第二图像；
    第三图像生成模块，用于基于所述第二图像，确定所述流体元素的停止状态，得到第三图像。
  12. 一种电子设备，其特征在于，其包括：
    一个或多个处理器；
    存储器；
    一个或多个应用程序，其中所述一个或多个应用程序被存储在所述存储器中并被配置为由所述一个或多个处理器执行，所述一个或多个程序配置用于：执行根据权利要求1～10任一项所述的图像处理方 法。
  13. 一种计算机可读介质，其特征在于，所述可读介质存储有至少一条指令、至少一段程序、代码集或指令集，所述至少一条指令、所述至少一段程序、所述代码集或指令集由所述处理器加载并执行以实现如权利要求1～10任一所述的图像处理方法。
PCT/CN2021/118950 2020-10-27 2021-09-17 图像处理方法、装置、电子设备及计算机可读介质 WO2022089087A1 (zh)

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