CN112309317A - Screen color difference compensation method, device and system, electronic equipment and storage medium - Google Patents
Screen color difference compensation method, device and system, electronic equipment and storage medium Download PDFInfo
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/73—Colour balance circuits, e.g. white balance circuits or colour temperature control
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0242—Compensation of deficiencies in the appearance of colours
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Abstract
The application provides a screen chromatic aberration compensation method, a device, a system, an electronic device and a storage medium, and relates to the technical field of image processing. The screen color difference compensation method comprises the following steps: acquiring relative position information between shooting equipment and a shot screen; performing color difference compensation on the image to be played according to the relative position information and a pre-stored color compensation relation to obtain a compensated image; transmitting the compensated image to the screen. In the embodiment of the application, the relative position information between the shooting equipment and the shot screen is obtained in real time, the corresponding chromatic aberration compensation processing is carried out on the output image of the screen by utilizing the corresponding relation between the different relative position information between the shooting equipment and the shot screen and the color offset data which are prestored, and the compensated image is finally obtained, so that the compensation can be carried out in time according to the position change of the shooting equipment, the position requirement on the shooting equipment is reduced, and the video recording quality is improved.
Description
Technical Field
The present disclosure relates to the field of image processing technologies, and in particular, to a method, an apparatus, a system, an electronic device, and a storage medium for compensating for screen color difference.
Background
In the LED display screen industry, LED products are designed in most cases to have an active lighting mode in which viewers can watch the LED directly by eyes, i.e., red, green, and blue LEDs are used to emit light to form a basic pixel of a display image. Such as LED screens in general conferences, surveillance centres, exhibition shows, cinemas, etc. In some cases, the LED screen is taken as a background and is shot into a movie or a television, and the screens still have basic pixels formed by red, green and blue LED beads and use scenes such as a background screen of a presenter in a television station studio. Because the three-color LED lamps of the LED display screen are arranged in an upper-middle-lower, left-middle-right and triangular manner in a physical arrangement relationship, and the three primary colors may be mutually shielded, when a viewer watches or shoots the LED screen by using the equipment, when a sight line or a shooting direction is not in one position with a normal line perpendicular to the LED screen, the color of the LED screen watched or shot can be physically changed along with the change of an included angle relative to the LED screen, namely, screen color cast occurs.
In order to avoid the above problems, in most of current shooting schemes, a camera position of the shooting device is placed near the normal direction of the LED screen, and the shooting device is kept fixed as much as possible, so as to reduce the problem of color cast of the LED screen caused by the change of the position of the shooting device.
The existing solution has higher requirements on the position of the shooting equipment and poor shooting effect.
Disclosure of Invention
In order to solve the problems in the prior art, the application provides a screen chromatic aberration compensation method, a device, a system, an electronic device and a storage medium.
In order to achieve the purpose, the technical scheme adopted by the application is as follows:
the first aspect of the present application provides a method for compensating for screen chromatic aberration, including:
acquiring relative position information between shooting equipment and a shot screen;
and performing color difference compensation on the image to be played according to the relative position information and a pre-stored color compensation relation to acquire a compensated image, wherein the pre-stored color compensation relation comprises: correspondence between different relative position information and color shift data;
transmitting the compensated image to the photographed screen.
Optionally, the acquiring the relative position information between the shooting device and the shot screen includes:
acquiring space coordinates and axial information of the shooting equipment in front of the shot screen through a space positioning system;
and acquiring relative position information between the shooting equipment and the shot screen according to the space coordinate and the axial information.
Optionally, the method further comprises:
acquiring a basic white balance image shot by the shooting equipment at a position opposite to the central axis of the shot screen and an offset white balance image shot by the shooting equipment at a sampling position with a different included angle with the central axis of the shot screen;
and calculating and acquiring the corresponding relation between different relative position information and color offset data according to the basic white balance image and the offset white balance image.
Optionally, the calculating, according to the basic white balance image and the offset white balance image, a correspondence between different pieces of relative position information and color offset data includes:
calculating color offset data corresponding to different relative position information according to the basic white balance image and an offset white balance image shot by the shooting device at sampling positions with different included angles with the central axis of the shot screen;
and establishing a corresponding relation between different relative position information and the color offset data according to the color offset data corresponding to different relative position information.
Optionally, the performing color difference compensation on the image to be played according to the relative position information and a pre-stored color compensation relationship to obtain a compensated image includes:
searching color offset data corresponding to the relative position information in the pre-stored color compensation relation according to the relative position information;
and compensating the image to be played according to the color offset data, and acquiring a compensated image.
The second aspect of the present application provides a screen color difference compensation apparatus, including: the device comprises a collecting unit, an acquiring unit and a transmitting unit;
the acquisition unit is used for acquiring relative position information between the shooting equipment and the shot screen;
the acquiring unit is configured to perform color difference compensation on an image to be played according to the relative position information and a pre-stored color compensation relationship, and acquire a compensated image, where the pre-stored color compensation relationship includes: correspondence between different relative position information and color shift data;
the transmission unit is used for transmitting the compensated image to the shot screen.
Optionally, the acquisition unit is configured to acquire, by using a spatial positioning system, spatial coordinates and axial information of the shooting device in front of the shot screen;
and acquiring relative position information between the shooting equipment and the shot screen according to the space coordinate and the axial information.
Optionally, the obtaining unit is further configured to obtain a basic white balance image shot by the shooting device at a position opposite to a central axis of the shot screen, and an offset white balance image shot by the shooting device at a sampling position with a different included angle from the central axis of the shot screen;
and calculating and acquiring the corresponding relation between different relative position information and color offset data according to the basic white balance image and the offset white balance image.
Optionally, the obtaining unit is configured to calculate color offset data corresponding to different pieces of relative position information according to the basic white balance image and an offset white balance image captured by the capturing device at a sampling position with a different included angle from a central axis of the captured screen;
and establishing a corresponding relation between different relative position information and the color offset data according to the color offset data corresponding to different relative position information.
Optionally, the obtaining unit is configured to search, according to the relative position information, color offset data corresponding to the relative position information in the pre-stored color compensation relationship;
and compensating the image to be played according to the color offset data, and acquiring a compensated image.
A third aspect of the present application provides a screen chromatic aberration compensation system, including: the system comprises a host, a space positioning system, a shooting device and a shot screen; the shooting equipment moves in a preset area in front of the shot screen; acquiring the position information of the shooting equipment by using the space positioning system;
the space positioning system is connected with the host; the host is connected with the shot screen; the host is adapted to perform the steps of the method according to the first aspect.
A fourth aspect of the present application provides an electronic device, comprising: a processor, a storage medium and a bus, wherein the storage medium stores machine-readable instructions executable by the processor, and when the electronic device is operated, the processor communicates with the storage medium through the bus, and the processor executes the machine-readable instructions to perform the steps of the method according to the first aspect.
A fifth aspect of the present application provides a storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method according to the first aspect.
The application provides a screen color difference compensation method, a device, a system, an electronic device and a storage medium. The screen color difference compensation method comprises the following steps: acquiring relative position information between shooting equipment and a shot screen; and performing color difference compensation on the image to be played according to the relative position information and a pre-stored color compensation relation to acquire a compensated image, wherein the pre-stored color compensation relation comprises: correspondence between different relative position information and color shift data; transmitting the compensated image to the photographed screen. In the embodiment of the application, the relative position information between the shooting equipment and the shot screen is obtained in real time, the corresponding chromatic aberration compensation processing is carried out on the output image of the shot screen by utilizing the corresponding relation between the different relative position information between the shooting equipment and the shot screen and the color offset data which are prestored, and the compensated image is finally obtained, so that the compensation can be carried out in time according to the position change of the shooting equipment, the position requirement on the shooting equipment is reduced, and the video recording quality is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic diagram of a screen color cast according to an embodiment of the present disclosure;
fig. 2 is a schematic flowchart of a method for compensating for screen chromatic aberration according to an embodiment of the present application;
fig. 3 is a schematic flowchart of a method for compensating for screen chromatic aberration according to another embodiment of the present application;
fig. 4 is a schematic flowchart of a method for compensating for screen chromatic aberration according to another embodiment of the present application;
fig. 5 is a schematic flowchart of a method for compensating for screen chromatic aberration according to another embodiment of the present application;
fig. 6 is a schematic flowchart of a method for compensating for screen chromatic aberration according to another embodiment of the present application;
fig. 7 is a schematic diagram of a screen color difference compensation apparatus according to an embodiment of the present application;
FIG. 8 is a diagram illustrating a system for compensating for chromatic aberration of a screen according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it should be understood that the drawings in the present application are for illustrative and descriptive purposes only and are not used to limit the scope of protection of the present application. Additionally, it should be understood that the schematic drawings are not necessarily drawn to scale. The flowcharts used in this application illustrate operations implemented according to some embodiments of the present application. It should be understood that the operations of the flow diagrams may be performed out of order, and steps without logical context may be performed in reverse order or simultaneously. One skilled in the art, under the guidance of this application, may add one or more other operations to, or remove one or more operations from, the flowchart.
In addition, the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that in the embodiments of the present application, the term "comprising" is used to indicate the presence of the features stated hereinafter, but does not exclude the addition of further features.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Furthermore, the terms "first," "second," and the like in the description and in the claims, as well as in the drawings, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that the features of the embodiments of the present application may be combined with each other without conflict.
In order to clearly illustrate the screen color difference compensation method provided by the embodiment of the present application, an application scenario of the method will now be briefly described.
In the Light Emitting Diode (LED) display screen industry, in most cases, LED products are designed to be an active Light Emitting mode for viewers to directly watch the LED products by naked eyes, that is, the LED products depend on red, green and blue LED beads to form a basic pixel for displaying images. Such as LED screens in general conferences, surveillance centres, exhibition shows, cinemas, etc. In some cases, the LED screen is taken as a background and is shot into a movie or a television, and the screens still have basic pixels formed by red, green and blue LED beads and use scenes such as a background screen of a presenter in a television station studio. Because the three-color LED lamps of the LED display screen are arranged in an upper-middle-lower, left-middle-right and triangular manner in a physical arrangement relationship, and the three primary colors may be mutually shielded, when a viewer watches or shoots the LED screen by using the equipment, when a sight line or a shooting direction is not in one position with a normal line perpendicular to the LED screen, the color of the LED screen watched or shot can be physically changed along with the change of an included angle relative to the LED screen, namely, screen color cast occurs.
As shown in fig. 1, the observer's viewpoint is located at the front right of the photographed screen, and the three primary colors of the single pixel are arranged on the photographed screen from left to right as red, green, and blue. In the right front viewpoint position, in the light emitting chip of the photographed screen, the green light emitting chip will shield a part of the light emitted from the red light emitting chip to the right front, and similarly, the blue chip will shield the light emitted from the green chip to the right front, thereby finally causing the viewpoint position on the picture, and when the screen is viewed, the color of the screen is blue, namely, the color of the screen is deviated.
In order to avoid the above problems, in most of current shooting schemes, a camera position of the shooting device is placed near the normal direction of the LED screen, and the shooting device is kept fixed as much as possible, so as to reduce the problem of color cast of the LED screen caused by the change of the position of the shooting device.
The existing solution has high requirements on the position of shooting equipment, and the shot video picture is not strong.
In order to solve the technical problems in the prior art, the present application provides an inventive concept: the relative position information between the shooting equipment and the shot screen is obtained in real time, corresponding chromatic aberration compensation processing is carried out on the output image of the shot screen by utilizing the corresponding relation between different relative position information between the shooting equipment and the shot screen and color offset data which are prestored, and the compensated image is finally obtained, so that the shooting equipment is not limited by the position in the shooting process any more, and the shooting equipment can move freely in the front preset range of the shot screen. The position requirement on the shooting equipment is reduced, and the picture feeling and the recording quality of video recording are improved.
The following describes a specific technical solution provided by the present application through possible implementation manners.
Fig. 2 is a schematic flowchart of a method for compensating for screen chromatic aberration according to an embodiment of the present application, where an execution subject of the method may be a processing device such as a computer or a server. As shown in fig. 2, the method includes:
s201, collecting relative position information between the shooting equipment and the shot screen.
Optionally, in this embodiment of the application, because the LED screen is a basic pixel for displaying an image formed by the red, green, and blue LED light-emitting beads, and there may be mutual shielding between the light-emitting beads, when a viewer watches or a shooting device shoots the LED screen, if a line of sight or a shooting direction is not in a same position with a normal line perpendicular to the LED screen, a color cast of the screen may occur along with a change of an included angle relative to the LED screen.
In some implementations, relative position information between the capture device and the captured screen may be obtained through optical motion capture techniques. Among them, the optical motion capture technology is most accurate and reliable in an infrared optical mode, and there are two main types, namely, an active type and a passive type. Optionally, in the embodiment of the present application, the relative position information of the shooting device with respect to the shot screen may be acquired by using a passive infrared motion capture technology.
S202, performing color difference compensation on the image to be played according to the relative position information and a pre-stored color compensation relation, and acquiring a compensated image.
Optionally, in this embodiment of the present application, the pre-stored color compensation relationship includes: correspondence between different relative position information and color shift data. Specifically, it may be a correspondence between the photographing apparatus and the photographed screen at different relative positions and the color shift data.
In the embodiment of the application, the image to be played may be subjected to color difference compensation through the obtained relative position information between the current shooting device and the shot screen and the color compensation relationship pre-stored in the system, and exemplarily, the current relative position information may correspond to the relative position information in the pre-stored color compensation relationship, so as to obtain the color compensation number under the current relative position information in the pre-stored color compensation relationship, and the image to be played is subjected to color difference compensation by using the color compensation number, so as to obtain the compensated image.
And S203, transmitting the compensated image to the shot screen.
Optionally, in this embodiment of the application, after obtaining corresponding compensated images for different relative positions between the shooting device and the shot screen, the compensated images are finally transmitted to the shot screen, so that the screen plays the compensated images.
The embodiment of the application provides a method for compensating screen chromatic aberration, which comprises the following steps: acquiring relative position information between shooting equipment and a shot screen; and performing color difference compensation on the image to be played according to the relative position information and a pre-stored color compensation relation to acquire a compensated image, wherein the pre-stored color compensation relation comprises: correspondence between different relative position information and color shift data; transmitting the compensated image to the shot. In the embodiment of the application, the relative position information between the shooting equipment and the shot screen is obtained in real time, the corresponding chromatic aberration compensation processing is carried out on the output image of the shot screen by utilizing the corresponding relation between the different relative position information between the shooting equipment and the shot screen and the color offset data which are prestored, and the compensated image is finally obtained, so that the compensation can be carried out in time according to the position change of the shooting equipment, the position requirement on the shooting equipment is reduced, and the video recording quality is improved.
Fig. 3 is a schematic flow chart of a method for compensating for screen chromatic aberration according to another embodiment of the present application, as shown in fig. 3, step S201 may further include:
s301, acquiring space coordinates and axial information of the shooting equipment in front of a shot screen through a space positioning system.
And S302, acquiring relative position information between the shooting equipment and the shot screen according to the space coordinate and the axial information.
It should be noted that, in the embodiment of the present application, the spatial coordinates may be spatial position information, for example, the spatial coordinates may be represented by coordinates in different directions x, y, and z in a three-dimensional space; the axial information may be an angle value corresponding to the spatial position information.
In this embodiment, the spatial coordinate and the axial information of the shooting device in front of the shot screen are obtained by using the spatial positioning system, specifically, the process of obtaining the information by using the spatial positioning system is as follows: a plurality of infrared induction cameras are erected in a physical space, the infrared induction cameras mutually form a certain angle and are mutually overlapped, and the purpose is that when shooting equipment and a shot screen act in the space, the shooting equipment and the shot screen are digitally recorded in real time. Firstly, infrared light with a certain wavelength emitted by an infrared LED lamp on an infrared induction camera is reflected by a shooting device or a reflecting mark point fixedly installed on a shot screen, infrared images are captured by the infrared camera frame by frame, then the images are calculated frame by frame through an embedded calculation unit of the infrared induction camera to obtain a two-dimensional coordinate of each mark point, and the space coordinate and axial information of the shooting device and the shot screen are obtained through the two-dimensional coordinates of the mark points.
Because the absolute coordinates of the shooting equipment and the shot screen are acquired through the space positioning system, and the relative coordinates of the shooting equipment and the shot screen are in the pre-stored color compensation relationship, the matching between the shooting equipment and the shot screen and the pre-stored color compensation relationship is facilitated.
On the basis of the above embodiment, before implementing the method, the pre-stored color compensation relationship needs to be established.
Fig. 4 is a schematic flow chart of a method for compensating for screen chromatic aberration according to another embodiment of the present application, as shown in fig. 4, the method further includes:
s401, acquiring a basic white balance image shot by the shooting device at a relative position of a central axis of the shot screen and an offset white balance image shot by the shooting device at a sampling position with a different included angle with the central axis of the shot screen.
S402, calculating and obtaining the corresponding relation between different relative position information and color offset data according to the basic white balance image and the offset white balance image.
In the embodiment of the application, the image acquired by the shooting device at the relative position of the axis in the shot screen is an image without chromatic aberration, and the image shot at the relative position of the axis is taken as a basic white balance image. Accordingly, an offset image photographed at a sampling position having an angle with the axis of the photographed screen is taken as an offset white balance image. And calculating and acquiring the corresponding relation between different relative position information and color offset data through the basic white balance image and the offset white balance image.
In one implementation, the basic white balance image and the color parameters of the offset white balance images at the plurality of different positions may be obtained by a luminance measuring instrument, and the corresponding relationship between the different relative position information and the color offset data may be obtained by calculating the difference between the color parameters of the offset white balance image and the color parameters of the basic white balance image.
Fig. 5 is a schematic flowchart of a method for compensating for screen chromatic aberration according to another embodiment of the present application, and as shown in fig. 5, step S402 may further include:
s501, calculating color offset data corresponding to different relative position information according to the basic white balance image and the offset white balance image shot by the shooting equipment at the sampling position with different included angles with the central axis of the shot screen.
S502, according to the color offset data corresponding to different relative position information, establishing the corresponding relation between the different relative position information and the color offset data.
Optionally, in this embodiment of the application, color shift data corresponding to different relative position information may be calculated by using the basic white balance image and the offset white balance image. Specifically, the color parameters of the basic white balance image and the color parameters of the offset white balance image can be obtained, and the color offset data corresponding to the offset white balance image under different relative position information is calculated through the color parameters. And establishing a corresponding relation between different relative position information and the color offset data according to the color offset data corresponding to different relative position information. Illustratively, in the embodiment of the present application, when the color parameter corresponding to the white balance image is (200, 230, 180), assuming that the color parameter corresponding to the offset white balance image acquired under a relative position information is (210, 220, 200), the color offset data under the relative position information is (-10, +10, -20).
And acquiring color offset data under a plurality of pieces of relative position information in front of the shot screen to establish corresponding relations between different pieces of relative position information and the color offset data.
Further, after the color offset data under the relative position information in front of the shot screen is acquired, the corresponding relation between different relative position information and the color offset data can be established through neural network learning, processing equipment simulation and the like.
Fig. 6 is a schematic flow chart of a method for compensating for screen chromatic aberration according to another embodiment of the present application, as shown in fig. 6, step S202 may further include:
s601, searching color offset data corresponding to the relative position information in a pre-stored color compensation relation according to the relative position information.
And S602, compensating the image to be played according to the color offset data, and acquiring the compensated image.
In the embodiment of the present application, after the relative position information is obtained, specifically, after the relative position information between the current shooting device and the shot screen is obtained, the color offset data corresponding to the relative position information may be searched in a pre-stored color compensation relationship. And compensating the image to be played by using the color offset data to obtain a compensated image.
The color offset data and the original color data may be superimposed, and the specific compensation manner is not limited herein.
It can be understood that, in the embodiment of the present application, the color difference compensation is performed on the to-be-played image under different relative position information through the pre-stored color compensation relationship, so that the shooting device is not limited by the position in the shooting process any more, and the shooting device can move arbitrarily within the preset range in front of the shot screen. The position requirement on the shooting equipment is reduced, and the picture feeling and the recording quality of video recording are improved.
The following describes a device and a storage medium for executing the method for compensating for screen chromatic aberration provided by the present application, and specific implementation processes and technical effects thereof are referred to above, and will not be described again below.
Fig. 7 is a schematic diagram of a screen color difference compensation apparatus according to an embodiment of the present application, and as shown in fig. 7, the apparatus may include: an acquisition unit 701, an acquisition unit 702 and a transmission unit 703;
an acquisition unit 701 for acquiring relative position information between the photographing apparatus and the photographed screen;
an obtaining unit 702, configured to perform color difference compensation on the image to be played according to the relative position information and a pre-stored color compensation relationship, and obtain a compensated image, where the pre-stored color compensation relationship includes: correspondence between different relative position information and color shift data;
and a transmission unit 703 for transmitting the compensated image to the photographed screen.
Optionally, the collecting unit 701 is configured to collect, by using a spatial positioning system, spatial coordinates and axial information of the shooting device in front of the shot screen;
and acquiring relative position information between the shooting equipment and the shot screen according to the space coordinate and the axial information.
Optionally, the obtaining unit 702 is configured to obtain a basic white balance image shot by the shooting device at a position opposite to a central axis of the shot screen, and an offset white balance image shot by the shooting device at a sampling position with a different included angle from the central axis of the shot screen;
and calculating and acquiring the corresponding relation between different relative position information and color offset data according to the basic white balance image and the offset white balance image.
Optionally, the obtaining unit 702 is configured to calculate color offset data corresponding to different relative position information according to the basic white balance image and an offset white balance image captured by the capturing device at a sampling position with a different included angle from a central axis of the captured screen;
and establishing a corresponding relation between different relative position information and the color offset data according to the color offset data corresponding to different relative position information.
Optionally, the obtaining unit 702 is configured to search, according to the relative position information, color offset data corresponding to the relative position information in a pre-stored color compensation relationship;
and compensating the image to be played according to the color offset data, and acquiring the compensated image.
Fig. 8 is a schematic diagram of a screen chromatic aberration compensation system according to an embodiment of the present application, and as shown in fig. 8, the system includes: a host 801, a spatial positioning system 802, a shooting device 803 and a shot screen 804; the photographing device 803 moves within a preset area in front of the photographed screen 804; acquiring position information of the photographing apparatus 803 by using the spatial localization system 802; the space positioning system 802 is connected with the host 801; the host 801 is connected with the photographed screen 804; the host 801 is configured to perform the steps of the method embodiments described above.
Fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application, including: a processor 710, a storage medium 720 and a bus 730, wherein the storage medium 720 stores machine-readable instructions executable by the processor 710, when the electronic device is operated, the processor 710 communicates with the storage medium 720 through the bus 730, and the processor 710 executes the machine-readable instructions to perform the steps of the above-mentioned method embodiments. The specific implementation and technical effects are similar, and are not described herein again.
The embodiment of the application provides a storage medium, wherein a computer program is stored on the storage medium, and the computer program is executed by a processor to execute the method.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to perform some steps of the methods according to the embodiments of the present application. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A method for compensating for screen chromatic aberration, comprising:
acquiring relative position information between shooting equipment and a shot screen;
and performing color difference compensation on the image to be played according to the relative position information and a pre-stored color compensation relation to acquire a compensated image, wherein the pre-stored color compensation relation comprises: correspondence between different relative position information and color shift data;
transmitting the compensated image to the photographed screen.
2. The method of claim 1, wherein the collecting relative position information between the photographing apparatus and the photographed screen comprises:
acquiring space coordinates and axial information of the shooting equipment in front of the shot screen through a space positioning system;
and acquiring relative position information between the shooting equipment and the shot screen according to the space coordinate and the axial information.
3. The method of claim 1, further comprising:
acquiring a basic white balance image shot by the shooting equipment at a position opposite to the central axis of the shot screen and an offset white balance image shot by the shooting equipment at a sampling position with a different included angle with the central axis of the shot screen;
and calculating and acquiring the corresponding relation between different relative position information and color offset data according to the basic white balance image and the offset white balance image.
4. The method according to claim 3, wherein the calculating and obtaining the corresponding relationship between different relative position information and color shift data according to the basic white balance image and the shift white balance image comprises:
calculating color offset data corresponding to different relative position information according to the basic white balance image and an offset white balance image shot by the shooting device at sampling positions with different included angles with the central axis of the shot screen;
and establishing a corresponding relation between different relative position information and the color offset data according to the color offset data corresponding to different relative position information.
5. The method according to any one of claims 1 to 4, wherein the performing color difference compensation on the image to be played according to the relative position information and a pre-stored color compensation relationship to obtain a compensated image comprises:
searching color offset data corresponding to the relative position information in the pre-stored color compensation relation according to the relative position information;
and compensating the image to be played according to the color offset data, and acquiring a compensated image.
6. A screen color difference compensation apparatus, comprising: the device comprises a collecting unit, an acquiring unit and a transmitting unit;
the acquisition unit is used for acquiring relative position information between the shooting equipment and the shot screen;
the acquiring unit is configured to perform color difference compensation on an image to be played according to the relative position information and a pre-stored color compensation relationship, and acquire a compensated image, where the pre-stored color compensation relationship includes: correspondence between different relative position information and color shift data;
the transmission unit is used for transmitting the compensated image to the screen.
7. The apparatus of claim 6, wherein the acquisition unit is configured to acquire the spatial coordinates and axial information of the shooting device in front of the shot screen through a spatial positioning system;
and acquiring relative position information between the shooting equipment and the shot screen according to the space coordinate and the axial information.
8. A screen chromatic aberration compensation system, comprising: the system comprises a host, a space positioning system, a shooting device and a shot screen; the shooting equipment moves in a preset area in front of the shot screen; acquiring the position information of the shooting equipment by using the space positioning system;
the space positioning system is connected with the host; the host is connected with the shot screen; the host is adapted to perform the steps of the method of any of claims 1-5.
9. An electronic device, comprising: a processor, a storage medium and a bus, the storage medium storing machine-readable instructions executable by the processor, the processor and the storage medium communicating via the bus when the electronic device is operating, the processor executing the machine-readable instructions to perform the steps of the method according to any one of claims 1-5.
10. A storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 5.
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