CN107197222B - Method and device for generating correction information of projection equipment - Google Patents
Method and device for generating correction information of projection equipment Download PDFInfo
- Publication number
- CN107197222B CN107197222B CN201710378455.0A CN201710378455A CN107197222B CN 107197222 B CN107197222 B CN 107197222B CN 201710378455 A CN201710378455 A CN 201710378455A CN 107197222 B CN107197222 B CN 107197222B
- Authority
- CN
- China
- Prior art keywords
- projection
- standard
- reference point
- coordinate
- correction information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 49
- 238000010586 diagram Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3191—Testing thereof
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Projection Apparatus (AREA)
Abstract
The invention discloses a method and a device for generating correction information of projection equipment, wherein the method comprises the following steps: acquiring first coordinates of at least three first reference points on a projection screen and second coordinates of at least three second reference points on the surface of the projection equipment; generating a standard coordinate of each second reference point according to the standard position relation between the projection screen and the projection equipment and the first coordinate; and generating correction information of the projection equipment according to the second coordinate and the standard coordinate. The correction information generated by the method has high accuracy, and after the projection equipment is corrected by adopting the correction information, any projection image projected to the projection screen by adopting the projection equipment can be clearly and completely displayed on the projection screen without correcting each projection image, so that the correction efficiency of the projection image is greatly improved.
Description
Technical Field
The present invention relates to the field of projection devices, and in particular, to a method and an apparatus for generating correction information of a projection device.
Background
With the development of projection technology, projection devices are becoming common devices in people's daily life and work, such as projection televisions and office projectors. During the use of the projection device, the projection image needs to be accurately projected on the projection screen, that is, the projection image is completely displayed on the projection screen, and the center of the projection image coincides with the center of the projection screen.
In the prior art, in order to ensure that a projection image is accurately projected on a projection screen, mechanical adjustment is usually performed on the projection device according to relevant information such as an inclination angle of the projection device and a distance between the projection device and the projection screen, that is, an angle of the projection device and a distance between the projection device and the projection screen are adjusted, so as to ensure that the projection image is accurately projected on the projection screen. However, in this adjustment method, since the inclination angle of the projection device and the distance between the projection device and the projection screen are used as the correction information of the projection device, the accuracy of the correction information is low, and after the adjustment device is mechanically adjusted according to the correction information, it can only be ensured that the projection image is completely displayed on the projection screen, and it cannot be ensured that the projection image on the projection screen has good brightness and definition.
Disclosure of Invention
The invention provides a method and a device for generating correction information of projection equipment, which are used for solving the problems that in the prior art, the accuracy of the correction information of the projection equipment is low, and a projected image on a projection screen cannot be guaranteed to have good brightness and definition after the projection equipment is corrected according to the correction information.
In a first aspect, the present invention provides a method for generating correction information for a projection device, the method comprising: acquiring first coordinates of at least three first reference points on a projection screen and second coordinates of at least three second reference points on the surface of the projection equipment; generating a standard coordinate of each second reference point according to the standard position relation between the projection screen and the projection equipment and the first coordinate; and generating correction information of the projection equipment according to the second coordinate and the standard coordinate.
Further, the process of generating the standard coordinate of each second reference point according to the standard position relationship between the projection screen and the projection device and the first coordinate specifically includes: calculating and generating standard coordinates of each second reference point according to the following relational expression;
wherein (x)1,y1,z1)、(x2,y2,z2) And (x)3,y3,z3) First coordinates representing three first reference points, (x, y, z) standard coordinates of any one second reference point, R1Representing the second reference point to the first reference point (x)1,y1,z1) Standard distance of (1), R2Representing the second reference point to the first reference point (x)2,y2,z2) Standard distance of (1), R3Representing the second reference point to the first reference point (x)3,y3,z3) The standard distance of (2).
Further, the process of generating the correction information of the projection device according to the second coordinate and the standard coordinate specifically includes: calculating and generating correction information of each second reference point according to the following relational expression;
wherein (x)t,yt,zt) Correction information indicating any one of the second reference points, (x, y, z) standard coordinates of the second reference point, (x0,y0,z0) A second coordinate representing the second reference point.
Further, the process of obtaining first coordinates of at least three first reference points on the projection screen and second coordinates of at least three second reference points on the surface of the projection device specifically includes: establishing a coordinate system O-xyz, wherein the projection screen is positioned on a yz plane of the coordinate system O-xyz, and the projection equipment is positioned on an xz plane of the coordinate system O-xyz; first coordinates of at least three first reference points on the projection screen in said coordinate system O-xyz and second coordinates of at least three second reference points on the surface of the projection device in said coordinate system O-xyz are acquired.
Further, after generating the correction information of the projection device according to the second coordinates and the standard coordinates, the method further includes: and projecting the correction information onto a projection screen, and displaying the correction information on the projection screen.
In a second aspect, the present invention also provides an apparatus for generating correction information of a projection device, the apparatus comprising: the system comprises a coordinate acquisition module, a display module and a control module, wherein the coordinate acquisition module is used for acquiring first coordinates of at least three first reference points on a projection screen and second coordinates of at least three second reference points on the surface of the projection equipment; the standard coordinate generating module is used for generating a standard coordinate of each second reference point according to the standard position relation between the projection screen and the projection equipment and the first coordinate; and the correction information generating module is used for generating the correction information of the projection equipment according to the second coordinate and the standard coordinate.
Further, the standard coordinate generating module is specifically configured to: calculating and generating a standard coordinate of each second reference point according to the following relational expression;
wherein (x)1,y1,z1)、(x2,y2,z2) And (x)3,y3,z3) First coordinates representing three first reference points, (x, y, z) standard coordinates of any one second reference point, R1Representing the second reference point to the first reference point (x)1,y1,z1) Standard distance of (1), R2Representing the second reference point to the first reference point (x)2,y2,z2) Standard distance of (1), R3Representing the second reference point to the first reference point (x)3,y3,z3) The standard distance of (2).
Further, the correction information generation module is specifically configured to: calculating and generating correction information of each second reference point according to the following relational expression;
wherein (x)t,yt,zt) Correction information indicating any one of the second reference points, (x, y, z) standard coordinates of the second reference point, (x0,y0,z0) A second coordinate representing the second reference point.
Further, the coordinate acquisition module is specifically configured to: establishing a coordinate system O-xyz, wherein a projection screen is positioned on a yz plane of the coordinate system O-xyz, and a projection device is positioned on an xz plane of the coordinate system O-xyz; first coordinates of at least three first reference points on the projection screen in said coordinate system O-xyz and second coordinates of at least three second reference points on the surface of the projection device in said coordinate system O-xyz are acquired.
Further, the apparatus further comprises: and the projection module is used for projecting the correction information onto a projection screen and displaying the correction information on the projection screen.
The technical scheme provided by the embodiment of the invention can have the following beneficial effects: the invention provides a method and a device for generating correction information of a projection device, wherein the method comprises the steps of acquiring a first coordinate of a first reference point on a projection screen and a second coordinate of a second reference point on the surface of the projection device, generating the correction information of the projection device according to the acquired first coordinate and second coordinate and a standard position relation between the projection device and the projection screen, the accuracy of the generated correction information is higher because the standard position relation between the projection device and the projection screen is referred when the correction information of the projection device is generated, after the projection device is corrected according to the correction information, the actual relative position between the projection device and the projection screen is adjusted to the standard relative position, any projection image projected onto the projection screen by the projection device is not only displayed on the projection screen completely, and the method has good brightness and definition, adjustment for each projection image is not needed, the correction efficiency of the projection image is higher, and the correction effect is better. In addition, in the method, the correction information can be displayed on the projection screen, and a user can adjust the actual relative position of the projection equipment and the projection screen to the standard relative position better, quickly and accurately according to the correction information displayed on the projection screen, so that the correction efficiency is further improved.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any inventive exercise.
Fig. 1 is a schematic flowchart of a method for generating correction information of a projection apparatus according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a reference coordinate system according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating a state of displaying correction information on a projection screen according to an embodiment of the present invention;
fig. 4 is a block diagram of an apparatus for generating correction information of a projection device according to an embodiment of the present invention.
Detailed Description
Referring to fig. 1, fig. 1 is a schematic flowchart illustrating a method for generating correction information of a projection apparatus according to an embodiment of the present invention. As can be seen from fig. 1, the method includes:
As can be seen from the foregoing background, when the projection device is used, a projection image projected onto the projection screen by the projection device needs to be adjusted to a proper position of the projection screen, so that all the content of the projection image is displayed on the projection screen, the center position of the projection image coincides with the center position of the projection screen, and the projection image is ensured to have good brightness and definition. To achieve this, a certain positional relationship between the projection device and the projection screen must be satisfied, and herein, the positional relationship is defined as a standard positional relationship, the relative position of the projection device and the projection screen at this time is defined as a standard relative position, and the position of the projection device at this time is defined as a standard position. Based on this, the aforementioned object can be achieved by correcting the actual position of the projection device according to the standard position relationship between the projection device and the projection screen, and correcting the actual position of the projection device to the standard position, so that the actual relative position of the projection device and the projection screen is corrected to the standard relative position.
The actual position of the projection equipment is corrected, before the actual position of the projection equipment is corrected to the standard position, correction information of the projection equipment needs to be generated firstly, and how to correct the actual position of the projection equipment is determined. When the actual position of the projection device is actually corrected, three points can be arbitrarily selected on the projection device as reference points, and the actual coordinates of the three reference points are corrected to be standard coordinates, that is, the actual position of the projection device can be corrected to be the standard position. Herein, the coordinates of any point on the projection device when the projection device is at the standard position are defined as standard coordinates. It follows that correction information for three or more points on the projection apparatus can be used as correction information for the projection apparatus. Generating correction information for three or more points on the projection device is equivalent to generating correction information for the projection device. The correction information of any point on the projection equipment can be determined according to the difference between the actual coordinate and the standard coordinate of the point. Therefore, to generate the correction information of the projection device, it is necessary to acquire the actual coordinates and the standard coordinates of at least three points on the projection device, and for the convenience of detection, at least three points are usually selected on the surface of the projection device, the actual coordinates of the three points can be obtained by measurement, and the standard coordinates of the three points can be obtained according to the standard positional relationship between the projection device and the projection screen and the actual coordinates of the three points on the projection screen. The detailed description may refer to the contents of the subsequent examples.
In combination with the above, to generate the correction information of the projection device, at least three points on the projection screen need to be selected at will, and each point selected from the projection screen is defined as a first reference point; at least three points are arbitrarily chosen on the surface of the projection device, where each point chosen from the surface of the projection device is defined as a second reference point.
After the first reference points and the second reference points are selected, the actual coordinates of each first reference point and the actual coordinates of each second reference point need to be acquired so as to be used in the process of subsequently generating the correction information of the projection device. In order to obtain the actual coordinates of each first reference point and the actual coordinates of each second reference point, a reference coordinate system needs to be established, and then the actual coordinates of each first reference point in the reference coordinate system and the actual coordinates of each second reference point in the reference coordinate system need to be obtained. Referring to fig. 2, fig. 2 is a schematic diagram of a reference coordinate system according to an embodiment of the present invention. As can be seen in connection with fig. 2, in some alternative embodiments, the reference coordinate system may be established as coordinate system O-xyz. For simpler measurement and calculation, the projection screen M is located in the yz plane of the coordinate system O-xyz and the projection device N is located in the xz plane of the coordinate system O-xyz.
Implementations of obtaining the first coordinate of the first reference point in the reference coordinate system and the second coordinate of the second reference point in the reference coordinate system include various types, for example: in a first implementation manner, a distance sensor is arranged at the position of each first reference point on the projection screen, a distance sensor is arranged at the position of each second reference point on the projection equipment, and then a first coordinate of each first reference point in the reference coordinate system and a second coordinate of each second reference point in the reference coordinate system are obtained through the distance sensors. In a second implementation manner, in combination with the size parameters of the projection screen and the projection device, the first coordinates of each first reference point in the reference coordinate system and the second coordinates of each second reference point in the reference coordinate system are obtained through measurement and/or calculation (refer to the contents of the following embodiments).
And 102, generating a standard coordinate of each second reference point according to the standard position relation between the projection screen and the projection equipment and the first coordinate.
In view of the foregoing, it is also necessary to determine the standard coordinates of each second reference point on the surface of the projection apparatus, that is, determine the standard coordinates of each second reference point in the reference coordinate system, in order to generate the correction information of the projection apparatus.
In specific implementation, the standard coordinate of each second reference point can be determined according to the standard position relationship between the projection device and the projection screen and the first coordinates of the three first reference points on the projection screen. The standard position relationship between the projection device and the projection screen is usually fixed, and some projection devices store the relevant content of the standard position relationship between the projection device and the projection screen, for example, the standard distance between each vertex on the surface of the projection device and four vertices on the projection screen. At this time, in step 101, any three or all of the four vertices of the projection screen are selected as first reference points, any three or more vertices on the surface of the projection device are selected as second reference points, and in the process of generating the correction information of the projection device, the standard position relationship between the projection device and the projection screen may be directly extracted from the interior of the projection device. If the relevant content of the standard position relationship between the projection device and the projection screen is not stored in the projection device, the content can be obtained by the following steps: projecting any one projection image onto a projection screen through projection equipment, then adjusting the actual relative position of the projection equipment and the projection screen to a standard relative position to ensure that the projection image is displayed on the projection screen clearly and completely, and the center of the projected image coincides with the center of the projection screen, then the current distances between each second reference point on the surface of the projection equipment and at least three first reference points on the projection screen are obtained through measurement, the obtained distance information is used as the standard distance between the second reference point and the corresponding first reference point, and the information which is obtained by measurement and contains the standard distances between all the second reference points and the corresponding first reference points is used as the related content of the standard position relationship between the projection equipment and the projection screen, and then the related content of the standard position relationship can be used in the subsequent process of generating the correction information of the projection equipment. In addition, the measured related content of the standard positional relationship may also be stored, and may be directly invoked and used in the subsequent generation process of the correction information of the projection device, and if the stored related content of the standard positional relationship is directly invoked in the subsequent generation process of the correction information of the projection device, in the process of executing step 101, both the first reference point and the second reference point need to select the first reference point and the second reference point related to the standard positional relationship.
After the relevant content of the standard position relationship between the projection device and the projection screen is obtained, the standard coordinate of each second reference point can be calculated and generated according to the following relational expression (1).
In the formula (1), (x)1,y1,z1)、(x2,y2,z2) And (x)3,y3,z3) First coordinates representing three first reference points on the projection screen, (x, y, z) representing any one of the surfaces of the projection deviceStandard coordinates of a second reference point, R1Representing the second reference point to the first reference point (x)1,y1,z1) Standard distance of (1), R2Representing the second reference point to the first reference point (x)2,y2,z2) Standard distance of (1), R3Representing the second reference point to the first reference point (x)3,y3,z3) The standard distance of (2).
Wherein the first reference point (x) can be obtained in two ways as described above1,y1,z1)、(x2,y2,z2) And (x)3,y3,z3) For example, referring to fig. 2, for simpler calculation, any three of the four vertices A, B, C and D of the projection screen M are generally selected as the first reference point, i.e., (x)1,y1,z1)、(x2,y2,z2) And (x)3,y3,z3) A, B, C and D, a first coordinate of any three of the four vertices; three or more of the four vertices E, F, G and H on the surface of projection device N are selected as second reference points, i.e., (x, y, z) are the standard coordinates of E, F, G and any of the four vertices H. First coordinates of the points a, B, C, and D may then be acquired by the distance sensor. The first coordinates of each first reference point may also be acquired by: selecting a rectangular projection screen with the length of 220cm and the width of 120cm, and enabling the y axis of an established coordinate system O-xyz to coincide with the wide edge of the projection screen, wherein the z axis of the coordinate system O-xyz is parallel to the long edge of the projection screen, the distance between the xz plane of the coordinate system O-xyz and the long edge on the projection screen close to the plane is 60cm, and then obtaining the first coordinate of the point A as (0,180,0), the first coordinate of the point B as (0,180,220), the first coordinate of the point C as (0,60,0), and the first coordinate of the point D as (0,60,220) through calculation. R1、R2And R3Is extracted from the acquired relevant content of the standard position relationship between the projection screen and the projection equipment.
And 103, generating correction information of the projection equipment according to the second coordinate and the standard coordinate.
The second coordinate of each second reference point may be obtained by the distance sensor, or may be measured by another measuring tool. After the second coordinates and the standard coordinates of each second reference point are obtained, the correction information of the projection device may be calculated and generated according to the following relation (2), that is, the correction information of each second reference point on the surface of the projection device is calculated and generated.
In equation (2), (x, y, z) represents the standard coordinates of any second reference point on the surface of the projection device, (x)0,y0,z0) A second coordinate (x) representing the second reference pointt,yt,zt) The correction information of the second reference point indicates that the correction requirement for the second reference point is: moving | x along the x-axistDistance of | if xtIs positive, then move | x in the positive direction of the x-axis toward the x-axistDistance of |; or, if xtIs negative, then move | x in a negative direction along the x-axis toward the x-axistDistance of |; moving y along y-axistIf ytIs positive, then move y in the positive direction of the y-axistDistance of |; or, if ytIs negative, then move | y in a negative direction along the y-axis toward the y-axistDistance of |; moving z along the z-axistIf z istIs positive, then move | z in the positive direction of the z-axis along the z-axistDistance of |; or, if ztIs negative, then move | z in a negative direction along the z-axis toward the z-axistDistance of | l.
Next, referring to fig. 2, taking the second reference point E as an example, how to generate the correction information of the second reference point E is described. Assume that the current second coordinate of the E point obtained by measurement is (8,18, 75). The three points A, B, C mentioned above are used as three first reference points on the projection screen, wherein the first coordinate of the point A is (0,180,0), and the first coordinate of the point B is (0,180,0)The first coordinate is (0,180,220), the first coordinate of the point C is (0,60,0), and the standard distance R from the point E to the point A is extracted from the inside of the projection equipment1179cm, Standard distance R from Point E to Point B2123cm, standard distance R from point E to point C390cm, then the standard coordinates of the generatable E point are calculated as (10,20,80) according to formula (1), and then the correction information of the generatable E point is calculated as (2,2,5) according to formula (2), that is, the correction requirement for the E point is: the point E is moved 2cm in the positive direction of the x-axis, 2cm in the positive direction of the y-axis, and 5cm in the positive direction of the z-axis. The generation process of the correction information of the other second reference point may refer to the generation process of the correction information of the E point, and is not described in detail herein.
After the correction information of the projection device is generated, the projection device can be corrected according to the correction information. The specific implementation process comprises the following steps: three or more second reference points of the projection equipment are selected, the actual coordinate of each second reference point in the selected second reference points is corrected to the standard coordinate according to the correction information, namely, the actual position of the projection equipment can be corrected to the standard position, so that the actual relative position of the projection equipment and the projection screen is corrected to the standard relative position, any projection image projected onto the projection screen by the projection equipment can be clearly and completely displayed on the projection screen, and the purpose of correcting the projection image is achieved.
In addition, in order to facilitate the user to complete the correction of the projection device more quickly and accurately, in some optional embodiments, after generating the correction information of the projection device according to the second coordinate and the standard coordinate, the method further includes: the correction information is projected onto a projection screen, on which the correction information is displayed. Referring to fig. 3, fig. 3 is a schematic diagram illustrating a state where correction information is displayed on a projection screen according to an embodiment of the present invention. As can be seen from fig. 3, the specific implementation process is as follows: drawing images of the projection device at various positions according to the position change of the projection device in the reference coordinate system, and projecting the images drawn each time onto the projection screen through the images drawn each time, namely displaying a device projection image of the projection device at the current position on the projection screen, and displaying correction information of each second reference point on the surface of the projection device in the device projection image, wherein the correction information of the point E of the second reference point is displayed in the image, for example: the movement is 2cm in the positive direction of the x-axis, 2cm in the positive direction of the y-axis, and 5cm in the positive direction of the z-axis. The other second reference points are similar to the point E and are not listed here. Herein, a projection image of the projection device itself is defined as a device projection image. Therefore, the user can obtain the correction condition of the projection equipment more clearly and intuitively through the projection screen, and the correction of the projection equipment is completed more quickly and accurately.
The method for generating the correction information of the projection device, provided by the embodiment of the invention, generates the correction information of the projection device by acquiring the first coordinate of the first reference point on the projection screen and the second coordinate of the second reference point on the surface of the projection device and according to the acquired first coordinate and second coordinate and the standard position relationship between the projection device and the projection screen, because the standard position relationship between the projection device and the projection screen is referred when generating the correction information of the projection device, the generated correction information has higher accuracy, after the projection device is corrected according to the correction information, the actual relative position between the projection device and the projection screen is adjusted to the standard relative position, and then any projection image projected onto the projection screen by the projection device can be completely displayed on the projection screen and has good brightness and definition, the adjustment of each projection image is not needed, the correction efficiency of the projection images is higher, and the correction effect is better. In addition, in the method, the correction information can be displayed on the projection screen, and a user can adjust the actual relative position of the projection equipment and the projection screen to the standard relative position better, quickly and accurately according to the correction information displayed on the projection screen, so that the correction efficiency is further improved.
Corresponding to the method for generating the correction information of the projection equipment, the embodiment of the invention also discloses a device for generating the correction information of the projection equipment.
Referring to fig. 4, fig. 4 is a block diagram illustrating a structure of an apparatus for generating correction information of a projection device according to an embodiment of the present invention. As can be seen in fig. 4, the apparatus includes: a coordinate obtaining module 401, configured to obtain first coordinates of at least three first reference points on the projection screen and second coordinates of at least three second reference points on the surface of the projection device; a standard coordinate generating module 402, configured to generate a standard coordinate of each second reference point according to a standard position relationship between the projection screen and the projection device and the first coordinate; a correction information generating module 403, configured to generate correction information of the projection apparatus according to the second coordinate and the standard coordinate.
Further, the standard coordinate generating module 402 is specifically configured to: calculating and generating a standard coordinate of each second reference point according to the following relational expression;
wherein (x)1,y1,z1)、(x2,y2,z2) And (x)3,y3,z3) First coordinates representing three first reference points, (x, y, z) standard coordinates of any one second reference point, R1Representing the second reference point to the first reference point (x)1,y1,z1) Standard distance of (1), R2Representing the second reference point to the first reference point (x)2,y2,z2) Standard distance of (1), R3Representing the second reference point to the first reference point (x)3,y3,z3) The standard distance of (2).
Further, the correction information generating module 403 is specifically configured to: calculating and generating correction information of each second reference point according to the following relational expression;
wherein (x)t,yt,zt) Correction information indicating any one of the second reference points, (x, y, z) standard coordinates of the second reference point, (x0,y0,z0) A second coordinate representing the second reference point.
Further, the coordinate obtaining module 401 is specifically configured to: establishing a coordinate system O-xyz, wherein a projection screen is positioned on a yz plane of the coordinate system O-xyz, and a projection device is positioned on an xz plane of the coordinate system O-xyz; first coordinates of at least three first reference points on the projection screen in said coordinate system O-xyz and second coordinates of at least three second reference points on the surface of the projection device in said coordinate system O-xyz are acquired.
Further, the apparatus further comprises: a projection module 404, configured to project the correction information onto a projection screen, and display the correction information on the projection screen.
By adopting the device for generating the correction information of the projection equipment, provided by the embodiment of the invention, the steps in the method for generating the correction information of the projection equipment can be implemented, the correction information with higher accuracy is generated, after the projection equipment is corrected according to the correction information, any one image projected onto the projection screen by adopting the projection equipment can be clearly and completely displayed on the projection screen, adjustment for each projected image is not needed, and the correction efficiency of the projected image is higher.
In specific implementation, the present invention further provides a computer storage medium, where the computer storage medium may store a program, and the program may include some or all of the steps in the embodiments of the method for generating correction information of a projection device provided by the present invention when executed. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM) or a Random Access Memory (RAM).
Those skilled in the art will readily appreciate that the techniques of the embodiments of the present invention may be implemented as software plus a required general purpose hardware platform. Based on such understanding, the technical solutions in the embodiments of the present invention may be essentially or partially implemented in the form of a software product, which may be stored in a storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments or some parts of the embodiments.
The same and similar parts in the various embodiments in this specification may be referred to each other. In particular, for the embodiment of the apparatus for generating the correction information of the projection device, since it is substantially similar to the embodiment of the method, the description is relatively simple, and for the relevant points, refer to the description in the embodiment of the method.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention.
Claims (8)
1. A method of generating correction information for a projection device, comprising:
acquiring first coordinates of at least three first reference points on a projection screen and second coordinates of at least three second reference points on the surface of the projection equipment;
generating a standard coordinate of each second reference point according to the standard position relation between the projection screen and the projection equipment and the first coordinate;
generating correction information of the projection equipment according to the second coordinate and the standard coordinate;
the process of generating the standard coordinate of each second reference point according to the standard position relationship between the projection screen and the projection device and the first coordinate specifically includes:
calculating and generating standard coordinates of each second reference point according to the following relational expression;
wherein (x)1,y1,z1)、(x2,y2,z2) And (x)3,y3,z3) First coordinates representing three first reference points, (x, y, z) standard coordinates of any one second reference point, R1Representing the second reference point to the first reference point (x)1,y1,z1) Standard distance of (1), R2Representing the second reference point to the first reference point (x)2,y2,z2) Standard distance of (1), R3Representing the second reference point to the first reference point (x)3,y3,z3) The standard distance of (2).
2. The method according to claim 1, wherein the process of generating the correction information of the projection device according to the second coordinates and the standard coordinates specifically includes:
calculating and generating correction information of each second reference point according to the following relational expression;
wherein (x)t,yt,zt) Correction information indicating any one of the second reference points, (x, y, z) standard coordinates of the second reference point, (x0,y0,z0) A second coordinate representing the second reference point.
3. The method of claim 2, wherein the process of obtaining first coordinates of at least three first reference points on the projection screen and second coordinates of at least three second reference points on the surface of the projection device comprises:
establishing a coordinate system O-xyz, wherein the projection screen is positioned on a yz plane of the coordinate system O-xyz, and the projection equipment is positioned on an xz plane of the coordinate system O-xyz;
first coordinates of at least three first reference points on the projection screen in said coordinate system O-xyz and second coordinates of at least three second reference points on the surface of the projection device in said coordinate system O-xyz are acquired.
4. The method of claim 1, wherein after generating correction information for the projection device based on the second coordinates and the standard coordinates, the method further comprises:
and projecting the correction information onto the projection screen, and displaying the correction information on the projection screen.
5. An apparatus for generating correction information for a projection device, comprising:
the system comprises a coordinate acquisition module, a display module and a control module, wherein the coordinate acquisition module is used for acquiring first coordinates of at least three first reference points on a projection screen and second coordinates of at least three second reference points on the surface of the projection equipment;
the standard coordinate generating module is used for generating a standard coordinate of each second reference point according to the standard position relation between the projection screen and the projection equipment and the first coordinate;
the correction information generation module is used for generating correction information of the projection equipment according to the second coordinate and the standard coordinate;
the standard coordinate generation module is specifically configured to:
calculating and generating standard coordinates of each second reference point according to the following relational expression;
wherein (x)1,y1,z1)、(x2,y2,z2) And (x)3,y3,z3) First coordinates representing three first reference points, (x, y, z) standard coordinates of any one second reference point, R1Representing the second reference point to the first reference point (x)1,y1,z1) Standard distance of (1), R2Representing the second reference point to the first reference point (x)2,y2,z2) Standard distance of (1), R3Representing the second reference point to the first reference point (x)3,y3,z3) The standard distance of (2).
6. The apparatus of claim 5, wherein the correction information generation module is specifically configured to:
calculating and generating correction information of each second reference point according to the following relational expression;
wherein (x)t,yt,zt) Correction information indicating any one of the second reference points, (x, y, z) standard coordinates of the second reference point, (x0,y0,z0) A second coordinate representing the second reference point.
7. The apparatus of claim 6, wherein the coordinate acquisition module is specifically configured to:
establishing a coordinate system O-xyz, wherein the projection screen is positioned on a yz plane of the coordinate system O-xyz, and the projection equipment is positioned on an xz plane of the coordinate system O-xyz;
first coordinates of at least three first reference points on the projection screen in said coordinate system O-xyz and second coordinates of at least three second reference points on the surface of the projection device in said coordinate system O-xyz are acquired.
8. The apparatus of claim 5, further comprising:
and the projection module is used for projecting the correction information onto the projection screen and displaying the correction information on the projection screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710378455.0A CN107197222B (en) | 2017-05-25 | 2017-05-25 | Method and device for generating correction information of projection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710378455.0A CN107197222B (en) | 2017-05-25 | 2017-05-25 | Method and device for generating correction information of projection equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107197222A CN107197222A (en) | 2017-09-22 |
| CN107197222B true CN107197222B (en) | 2020-04-28 |
Family
ID=59875590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710378455.0A Active CN107197222B (en) | 2017-05-25 | 2017-05-25 | Method and device for generating correction information of projection equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107197222B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107920235A (en) * | 2017-12-22 | 2018-04-17 | 神思电子技术股份有限公司 | A kind of video monitoring camera inter-linked controlling method and device |
| CN111064940B (en) * | 2019-12-20 | 2023-09-26 | 青岛海信激光显示股份有限公司 | Laser projection television |
| CN111083457B (en) * | 2019-12-27 | 2022-11-29 | 成都极米科技股份有限公司 | Method and device for correcting projection images of multiple light machines and projection instrument of multiple light machines |
| CN114650400A (en) * | 2020-12-18 | 2022-06-21 | 深圳光峰科技股份有限公司 | Projection correction method, projection correction device and electronic equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012199734A (en) * | 2011-03-22 | 2012-10-18 | Seiko Epson Corp | Projection type display device, and method for controlling the projection type display device |
| CN106612422A (en) * | 2015-12-31 | 2017-05-03 | 北京数科技有限公司 | Projection correction method and projection correction device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2543303Y (en) * | 2002-04-23 | 2003-04-02 | 神基科技股份有限公司 | Detecting device of image correction for projector equipment |
| US7252387B2 (en) * | 2005-03-21 | 2007-08-07 | Mitsubishi Electric Research Laboratories, Inc. | System and method for mechanically adjusting projector pose with six degrees of freedom for image alignment |
| CN101815191A (en) * | 2010-04-24 | 2010-08-25 | 中兴通讯股份有限公司 | Method for regulating display picture by using portable terminal projector and portable terminal |
| CN103220482B (en) * | 2013-03-12 | 2016-07-27 | 广东威创视讯科技股份有限公司 | A kind of full degree of freedom adjusts the method for projected picture position and size |
| JP2015126340A (en) * | 2013-12-26 | 2015-07-06 | ソニー株式会社 | Image processing method and image projection device |
| JP2015206950A (en) * | 2014-04-22 | 2015-11-19 | ソニー株式会社 | Information processing device, information processing method, program, adjustment device and image display system |
-
2017
- 2017-05-25 CN CN201710378455.0A patent/CN107197222B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012199734A (en) * | 2011-03-22 | 2012-10-18 | Seiko Epson Corp | Projection type display device, and method for controlling the projection type display device |
| CN106612422A (en) * | 2015-12-31 | 2017-05-03 | 北京数科技有限公司 | Projection correction method and projection correction device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107197222A (en) | 2017-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107197222B (en) | Method and device for generating correction information of projection equipment | |
| US9759548B2 (en) | Image processing apparatus, projector and projector system including image processing apparatus, image processing method | |
| US9858684B2 (en) | Image processing method and apparatus for calibrating depth of depth sensor | |
| US9344695B2 (en) | Automatic projection image correction system, automatic projection image correction method, and non-transitory storage medium | |
| US10664994B2 (en) | System and method for calibration of machine vision cameras along at least three discrete planes | |
| JP6253368B2 (en) | Three-dimensional shape measuring apparatus and control method thereof | |
| JP6092530B2 (en) | Image processing apparatus and image processing method | |
| JP6636252B2 (en) | Projection system, projector device, imaging device, and program | |
| US20150178910A1 (en) | Method and system for calibrating laser measuring apparatus | |
| US20190005607A1 (en) | Projection device, projection method and program storage medium | |
| WO2018098772A1 (en) | Method and apparatus for determining viewpoint, electronic device, and computer program product | |
| CN107883874B (en) | Calibration method of circular structured light | |
| JP2012048393A (en) | Information processing device and operation method of the same | |
| JP2011155412A (en) | Projection system and distortion correction method in the same | |
| KR20220035250A (en) | Co-environment reconstruction and camera calibration | |
| KR20220100813A (en) | Automatic driving vehicle registration method and device, electronic equipment and a vehicle | |
| JP2018194891A (en) | Three-dimensional shape estimation method, three-dimensional shape estimation program and three-dimensional shape estimation apparatus | |
| CN110139094A (en) | A kind of optical center alignment schemes, optical center Coordinate calculation method and device | |
| CN109781030A (en) | Method for correcting phase, device, electronic equipment and computer readable storage medium | |
| CN112419423A (en) | Calibration method, calibration device, electronic equipment and storage medium | |
| JP2012216981A (en) | Calibration method for stereo camera and information processing device | |
| JP2015206654A (en) | Information processing apparatus, information processing method, and program | |
| US20170059313A1 (en) | Image capture device with a calibration function and calibration method of an image capture device | |
| CN114062265B (en) | Evaluation method for stability of support structure of vision system | |
| JP2006215766A (en) | Image display device, image display method and image display program |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee after: Hisense Visual Technology Co., Ltd. Address before: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |