CN111050144A - Projection method and system based on six-fold screen field and six-fold screen field - Google Patents
Projection method and system based on six-fold screen field and six-fold screen field Download PDFInfo
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- CN111050144A CN111050144A CN201811185487.XA CN201811185487A CN111050144A CN 111050144 A CN111050144 A CN 111050144A CN 201811185487 A CN201811185487 A CN 201811185487A CN 111050144 A CN111050144 A CN 111050144A
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- 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]
- H04N9/3141—Constructional details thereof
- H04N9/3147—Multi-projection systems
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- 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]
- H04N9/3179—Video signal processing therefor
- H04N9/3188—Scale or resolution adjustment
Abstract
The invention discloses a projection method and a projection system based on a six-fold screen field and the six-fold screen field, and relates to the technical field of image processing, wherein the method comprises the following steps: acquiring position reference information corresponding to a viewing position and a virtual scene corresponding to the six-fold screen field with the current projection size; calculating azimuth viewing angles of the viewing position in six azimuths by combining the position reference information; the virtual scene generates a virtual picture corresponding to each azimuth angle according to each azimuth angle; and fusing the virtual pictures with six azimuth visual angles into a scene picture for watching the virtual scene at the watching position, and projecting the scene picture to the six-fold screen field. The six-fold screen field can change the size of a projection area according to actual requirements, and has high adaptability; and the projection effect changes along with the change of the watching position, so that a viewer really watches the stereoscopic scene image.
Description
Technical Field
The invention relates to the technical field of image processing, in particular to a projection method and system based on a six-fold screen field and the six-fold screen field.
Background
At present, the use of multi-screen fusion is mostly limited to plane fusion, i.e. multiple screens are commonly connected and fused for imaging. The stereoscopic space multi-screen fusion imaging is less in application, and three-dimensional software is used for manual splicing in the fusion imaging process and is often used in occasions such as commercial performances; such as furniture displays, floor type displays, and the like.
During display, the real three-dimensional space adopts a six-sided space structure which is the same as a room and has a fixed space size, and the size of the space can not be changed to meet the requirements of different users for experiencing different space sizes to image and view the film; and sometimes, projection does not need to use all six walls, which causes waste of space.
In addition, the multi-screen fusion imaging in the three-dimensional space has the condition that the watching visual angle is fixed, and the watching visual angle of a watcher cannot be updated in real time along with the position change of the watcher. When the viewing angle is fixed, and a viewer stands at another position to watch, the displayed stereoscopic scene image has distortion and other phenomena, so that the watching feeling of the viewer is influenced, and the viewer cannot really watch the stereoscopic scene image.
Disclosure of Invention
The invention aims to provide a projection method and system based on a six-fold screen field and the six-fold screen field, so that a viewer can view a stereoscopic scene image in real time, and the use experience of the user is improved.
The technical scheme provided by the invention is as follows:
a projection method based on a six-fold screen field comprises the following steps: the six-fold screen field with variable projection size consists of six projection surfaces; the method comprises the following steps: acquiring position reference information corresponding to a viewing position and a virtual scene corresponding to the six-fold screen field with the current projection size; calculating azimuth viewing angles of the viewing position in six azimuths by combining the position reference information; the virtual scene generates a virtual picture corresponding to each azimuth angle according to each azimuth angle; and fusing the virtual pictures with six azimuth visual angles into a scene picture for watching the virtual scene at the watching position, and projecting the scene picture to the six-fold screen field.
In the technical scheme, the projection surface of the six-fold screen field is adjustable in size, so that different requirements can be met. And the projected scene picture can change along with the change of the watching position, thereby improving the effect of watching the three-dimensional scene image by the watcher.
Further, when the azimuth viewing angle calculated by the viewing position in the azimuth viewing angles of six azimuths by combining the position reference information is the azimuth around the viewing position, the calculation process is as follows: calculating an azimuth viewing angle of an azimuth around the viewing position by combining the position reference information; and calculating the azimuth viewing angles of the rest three azimuths according to the calculated angle relation between the azimuth corresponding to the azimuth viewing angle and the other three azimuths around the viewing position.
In the technical scheme, when the calculation of the azimuth viewing angles around is involved, after one azimuth viewing angle is calculated, other azimuth viewing angles are directly calculated according to the relation between the other azimuth viewing angles and the other azimuth viewing angles, and the calculation is convenient and quick.
Further, the calculating the azimuth viewing angles of the viewing position at six azimuths by combining the position reference information comprises: and respectively calculating the azimuth viewing angles of the viewing position in six azimuths by combining the position reference information and the viewing angle calculation formulas in six azimuths.
In the technical scheme, different view angle calculation formulas are arranged in different directions, and the calculation result is more accurate and reliable.
Further, the generating, by the virtual scene according to each azimuth angle, a virtual picture corresponding to each azimuth angle includes: when the length of a visual angle area corresponding to the azimuth visual angle of an azimuth is larger than the length of a projection plane corresponding to the azimuth, calculating a cutting area corresponding to the azimuth visual angle, and cutting out a corresponding virtual picture in a virtual scene according to the cutting area and the azimuth visual angle corresponding to the cutting area; and when the length of a view angle area corresponding to the azimuth view angle of an azimuth is not more than the length of a projection plane corresponding to the azimuth, cutting out a virtual picture corresponding to the azimuth view angle in a virtual scene.
According to the technical scheme, the virtual picture is obtained by cutting or cutting according to different conditions, so that the obtained scene picture has a stereoscopic impression, and the viewpoint experience of a user is improved.
Further, the calculating the cutting area corresponding to the orientation view specifically includes: calculating a view angle picture parameter corresponding to each direction according to the position reference information and the direction view angle corresponding to each direction; and calculating the cutting area corresponding to each direction according to the visual angle picture parameter and the viewing space parameter corresponding to each direction.
In the technical scheme, the calculation method of the cutting area is provided, and calculation is convenient.
Further, the generating, by the virtual scene according to each azimuth angle, a virtual picture corresponding to each azimuth angle includes: when the X coordinate information in the position reference information is on the X-axis central line and the Y coordinate information in the position reference information is not on the Y-axis central line, cutting the position reference information into corresponding virtual pictures according to the azimuth viewing angle corresponding to the X axis in the virtual scene; and respectively calculating cutting areas corresponding to the orientation visual angles corresponding to the coordinate information on the residual axes in the position reference information, and cutting out corresponding virtual pictures in the virtual scene according to the cutting areas and the orientation visual angles corresponding to the cutting areas.
Further, the generating, by the virtual scene according to each azimuth angle, a virtual picture corresponding to each azimuth angle includes: when the X coordinate information in the position reference information is not on the X-axis central line and the Y coordinate information in the position reference information is on the Y-axis central line, cutting the position reference information into corresponding virtual pictures according to the azimuth viewing angle corresponding to the Y axis in the virtual scene; and respectively calculating cutting areas corresponding to the orientation visual angles corresponding to the coordinate information on the residual axes in the position reference information, and cutting out corresponding virtual pictures in the virtual scene according to the cutting areas and the orientation visual angles corresponding to the cutting areas.
Further, the generating, by the virtual scene according to each azimuth angle, a virtual picture corresponding to each azimuth angle includes: when the X coordinate information is not on the X-axis central line and the Y coordinate information is not on the Y-axis central line, respectively calculating cutting areas corresponding to all the azimuth viewing angles; and cutting out a corresponding virtual picture in the virtual scene according to each azimuth visual angle and the cutting area.
In the technical scheme, different modes are selected to obtain the virtual picture according to different coordinate information in the position reference information, so that the watching effect of a viewer at the watching position is ensured.
Further, the calculating of the clipping area corresponding to the azimuth viewing angle specifically includes: and analyzing the position deviation information of the position reference information relative to the preset position information, and calculating the corresponding cutting area by combining the position deviation information.
In the technical scheme, another mode for calculating the cutting area is provided, and the method is widely applied.
The invention also provides a six-fold screen field, comprising: each projection surface is connected with four projection surfaces in the other five projection surfaces; and the projection size of at least one projection surface is variable.
In the technical scheme, the projection surface of the six-fold screen field is adjustable in size, so that different requirements can be met.
Furthermore, the projection surface with the variable projection size is a movable wall surface, and the projection size of the projection surface is changed in a moving mode; or the projection surface with the variable projection size is a foldable and contractible movable wall surface, and the projection size of the projection surface is changed in a folding and contraction mode; or the projection surface with the variable projection size is a plurality of pull-down curtains, and the projection size of the projection surface is changed in a folding and unfolding mode.
In the technical scheme, various different modes for changing the projection size of the projection surface provide various choices, and the application is wide.
The invention also provides a projection system based on the six-fold screen field, which comprises: the system comprises intelligent equipment, projection equipment and a six-fold screen field; six book curtain places include: each projection surface is connected with at least four projection surfaces in the other five projection surfaces; the projection size of at least one projection surface is variable; the projection system based on six-fold screen field further comprises: the position acquisition module is used for acquiring position reference information corresponding to the watching position; the smart device includes: the scene acquisition module is used for acquiring a virtual scene corresponding to the six-fold screen field with the current projection size; the viewing angle calculation module is used for calculating azimuth viewing angles of the watching position in six azimuths by combining the position reference information; the image generation module is used for generating a virtual image corresponding to each azimuth angle according to each azimuth angle in the virtual scene; the image fusion module is used for fusing the virtual images of the six azimuth visual angles into a scene image for watching the virtual scene at the watching position; the projection equipment projects the scene picture to the five-folding screen field, and the inner side of the six-folding screen field forms a viewing space.
In the technical scheme, the projection surface of the six-fold screen field is adjustable in size, so that different requirements can be met. And the projected scene picture can change along with the change of the watching position, thereby improving the effect of watching the three-dimensional scene image by the watcher.
Compared with the prior art, the projection method and system based on the six-fold screen field, and the six-fold screen field have the advantages that:
the six-fold screen field can change the size of a projection area according to actual requirements, and has high adaptability; and the projection effect changes along with the change of the watching position, so that a viewer really watches the stereoscopic scene image.
Drawings
The above features, technical features, advantages and implementations of a six-fold screen yard will be further described in the following description of preferred embodiments in a clearly understandable manner with reference to the accompanying drawings.
FIG. 1 is a flow chart of an embodiment of a projection method based on a six-fold screen field according to the present invention;
FIG. 2 is a flow chart of another embodiment of a projection method based on a six-fold screen field according to the present invention;
FIG. 3 is a flow chart of a projection method based on a six-fold screen field according to another embodiment of the present invention;
FIG. 4 is a schematic diagram of cropping in the right direction from a viewpoint/viewing position in accordance with the present invention;
FIG. 5 is a schematic diagram of a projection system of an embodiment of the present invention based on a six-fold screen field;
FIG. 6 is a schematic structural view of a six-fold screen field according to the present invention;
FIG. 7 is a schematic view of the viewing angle at various orientations of a viewpoint/viewing position in accordance with the present invention;
FIG. 8 is a schematic view of the viewing angle at various orientations of another viewpoint/viewing position in accordance with the present invention;
FIG. 9 is a schematic view of a perspective of another viewpoint/viewing position in various orientations of the present invention;
FIG. 10 is a schematic view of cropping in a direction in front of a viewpoint/viewing position in accordance with the present invention;
FIG. 11 is a schematic view of cropping at a view point/viewing position rear orientation in accordance with the present invention;
fig. 12 is a schematic diagram of cropping in the left direction from a viewpoint/viewing position in the present invention.
The reference numbers illustrate:
10. the intelligent device comprises an intelligent device, 11, a scene acquisition module, 12, a visual angle calculation module, 13, an image generation module, 14, an image fusion module, 20, a projection device and 30, and a position acquisition module.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
According to an embodiment of the present invention, as shown in fig. 1, a projection method based on a six-fold screen field includes: the six-fold screen field with variable projection size is composed of six projection surfaces.
Specifically, the specific position of the six projection surfaces is a six-fold screen field composed of front, rear, left, upper, lower and right projection surfaces, which is shown in fig. 6.
Each projection surface is correspondingly provided with one or more projection devices, so that a foundation is provided for projection of subsequent scene pictures. The plurality of projection devices are responsible for one projection surface, so that the projection effect with high definition can be obtained even if the projection surface with long length (for example, 6 meters and 8 meters) is projected. For example: a projection plane 8 meters long is responsible for projecting half by 2 projection devices respectively, one projection plane projects a scene picture 4 meters in front of the projection plane, and the other projection plane projects a scene picture 4 meters behind the projection plane, so that the projection effect is ensured.
The method comprises the following steps:
s101, position reference information corresponding to the watching position and a virtual scene corresponding to a six-fold screen field with the current projection size are obtained.
Specifically, after a viewer enters a viewing space (i.e., the inner side of a six-fold screen field), a viewing position of the viewer is obtained by using a mobile terminal carried by the viewer; the mobile terminal can complete indoor positioning. The mobile terminal can be a mobile phone, a tablet personal computer, an intelligent bracelet and the like, and integrates an indoor positioning function on equipment frequently used by a viewer at ordinary times; or a hand-held terminal and the like can be specially produced, and the indoor positioning function is integrated.
Because the projection size of the six-fold screen field is variable, a corresponding virtual scene needs to be selected according to the sizes of six projection surfaces of the six-fold screen field, and the effect of each projection surface projected on the six-fold screen field subsequently is guaranteed to be real.
For example: the six-fold screen field consists of front, rear, left, right, upper and lower six projection surfaces, the corresponding sizes of the six projection surfaces are 3 × 2.8 meters, 4 × 3 meters and 4 × 3 meters respectively, and then the projection effect is obtained to be the virtual scene corresponding to the sizes.
There are various ways to vary the size of the six-fold screen field, for example: 1. the projection surface/surfaces are movable wall surfaces which can move along the guide rail, and the projection size of the projection surface is changed in a moving mode, so that the projectable range of the six-fold screen field is changed; 2. one or more projection surfaces are movable wall surfaces which can be folded and contracted like folding fans, the corresponding movable wall surfaces are folded and contracted according to actual requirements to change the projection size of the projection surfaces, and the projectable range of the six-fold screen field is adjusted; 3. the projection surfaces (such as front, left, right and back) on the side surfaces are provided with a plurality of curtains which are arranged above according to a grid, the width of the curtain is set according to the requirement (such as 50cm), when the wall surfaces in the front, left, right and back directions are required, the curtain at the corresponding position can be put down, the specific amount of the curtain to be put down is determined according to the front, left, right and back dimensions, and taking the projection surface in front of 3 meters long and a single curtain of 50cm as an example, 6 curtains are put down to form the projection surface in front. Of course, other ways of varying the projection size of the six-fold screen field are also included, and are not limited herein.
It should be noted that any one of the projection surfaces may be set to have a forward direction, and the directions of the other projection surfaces are determined according to the position of the projection surface located in the forward direction.
S102, the azimuth viewing angles of the viewing position in six azimuths are calculated by combining the position reference information.
Specifically, at different positions, the perspective view of a person may also be different at each orientation; if at different positions, the pictures presented by watching the same object at the same direction are different; the different pictures are seen because the perspective view angle changes when the object is viewed.
The position information of the watching position comprises X-axis coordinate information, Y-axis coordinate information and Z-axis coordinate information, and a plurality of azimuth viewing angles can be calculated through the position information of the watching position; for example: a forward azimuth viewing angle, a rearward azimuth viewing angle, a left azimuth viewing angle, a right azimuth viewing angle, an upper azimuth viewing angle, and a lower azimuth viewing angle.
One projection surface is set as the front projection surface according to actual requirements, and the orientations of the other five projection surfaces are confirmed according to the positions of the projection surfaces positioned in front. For example: the projection plane located on the left side of the projection plane located in front is oriented to the left.
S103, the virtual scene generates a virtual picture corresponding to each azimuth angle according to each azimuth angle.
Specifically, the virtual scene is an integral picture, and the virtual scene may be a scene in which a house is decorated, a scene displayed in a commodity room, a scene displayed in a commodity, and the like. Cutting a virtual scene in a three-dimensional space; after the azimuth visual angle of the watching position is calculated, if the azimuth visual angle in front is combined, the virtual scene is cut into a virtual picture in front in a three-dimensional space; in this way, virtual screens of the rear, left, right, upper, and lower sides can be obtained.
Because only the six-fold screen field is applied in this embodiment, the virtual pictures corresponding to six directions need to be cut.
S104, the virtual pictures of the six azimuth viewing angles are fused into a scene picture of a virtual scene watched at the watching position, and the scene picture is projected to a six-fold screen field.
Specifically, after the virtual pictures in the six directions are obtained, the virtual pictures in the six directions are seamlessly spliced and fused to form a complete scene picture viewed at the viewing position, and the complete scene picture is projected to a six-fold screen field for the user to stand at the viewing position to view.
In this embodiment, when the position reference information corresponding to the viewing position is obtained, the position reference information may be two types of position information:
in the first type, the position reference information is virtual position information:
converting the viewing position information in the viewing space into virtual position information in the virtual scene according to the corresponding relation between the space coordinates of the viewing space (namely, in the six-fold screen field) and the virtual coordinates of the virtual scene; and uses the virtual location information as location reference information.
Specifically, under the condition of real-time rendering, viewing position information is converted into virtual position information, and the calculation of the azimuth angle of view and the generation of a virtual picture are completed through the virtual position information. The essence of real-time rendering is the real-time computation and output of graphics data.
In the second type, the position reference information is position pixel information:
converting viewing position information in the viewing space into position pixel information in the virtual scene according to the corresponding relation between the space coordinates of the viewing space and the picture pixels of the virtual scene; and the positional pixel information is used as positional reference information.
Specifically, under the condition of offline rendering, viewing position information is converted into position pixel information, and the calculation of the azimuth viewing angle and the generation of a virtual picture are completed through the position pixel information.
Wherein, a scene model of the virtual scene and a space model of the viewing space (namely, a model of the six-fold screen field) are in a specific proportional relationship; the viewing space is a six-fold screen field composed of six projection surfaces as shown in fig. 6. The specific proportion relation is 1: 1.
when the projection face size in the six-fold screen place in the real space changes, the size adaptability of the scene model of the virtual scene changes, and 1 is ensured: 1, in a ratio of 1.
Calculating corresponding six azimuth viewing angles at different viewing positions, wherein the same azimuth has different azimuth viewing angles according to different viewing positions; and aiming at different azimuth viewing angles, virtual pictures generated in the same azimuth are different. In the same viewing position, virtual pictures in six directions are seamlessly spliced to form a complete scene picture which is projected to a six-fold screen field, and the viewing angle of the scene picture changes along with the position change of a viewer, so that the viewing angle of the viewer can be kept to be updated in real time, and the displayed three-dimensional scene picture can be updated in time; the stereoscopic scene image presented by the stereoscopic scene image display device cannot be distorted due to the change of the viewing position.
According to an embodiment of the present invention, as shown in fig. 2, a projection method based on a six-fold screen field includes: the six-fold screen field with variable projection size is composed of six projection surfaces.
The method comprises the following steps:
s201, acquiring position reference information corresponding to a viewing position and a virtual scene corresponding to a six-fold screen field with a current projection size;
s202, calculating the azimuth viewing angles of the viewing position in six azimuths by combining the position reference information:
and S212, respectively calculating the azimuth viewing angles of the viewing position in the six azimuths by combining the position reference information and the six azimuth viewing angle calculation formulas.
Specifically, when six azimuth viewing angles of the six-fold screen field need to be calculated, for example, the azimuth viewing angles of the front, rear, right, left, upper and lower six azimuths; the front azimuth viewing angle can be calculated by utilizing a viewing angle calculation formula of the front azimuth viewing angle; the rear azimuth viewing angle can be calculated by utilizing a viewing angle calculation formula of the rear azimuth viewing angle; the right side direction view angle can be calculated by using a view angle calculation formula of the right side direction view angle, and the upper side direction view angle can be calculated by using a view angle calculation formula of the upper side direction view angle; the left azimuth viewing angle can be calculated by utilizing a viewing angle calculation formula of the left azimuth viewing angle; the lower azimuth viewing angle can be calculated by using a viewing angle calculation formula of the lower azimuth viewing angle.
As shown in fig. 10, the forward azimuth angle is FOV, FOV is 2 ∠ θ, tan θ is (L)12+ s)/y; where L1 is the lateral length of the viewing space, i.e., the length of the front projection plane in the six-fold screen field, s is the lateral offset from the center of the viewing space, and y is the viewing distance directly in front of the viewing space.
As shown in fig. 11, the rear azimuth viewing angle is FOV,
tanθ＝(L1/2+s)/(L2-y); where L2 is the lateral length of the viewing space, s is the lateral offset from the center position of the viewing space, and y is the viewing distance directly in front within the viewing space.
When the position information of the viewpoint o is known, the azimuth viewing angle of each azimuth can be calculated, and the azimuth viewing angles corresponding to the left and right sides, the upper and lower sides of the azimuth viewing angle can also be calculated by a formula, which is not described herein again.
Respectively calculating the azimuth viewing angle corresponding to each azimuth by using a viewing angle calculation formula corresponding to each azimuth; the accuracy of each azimuth viewing angle can be improved; the accuracy of other azimuth viewing angles cannot be influenced due to the fact that one azimuth viewing angle is calculated wrongly.
Optionally, when the S202 calculates, in combination with the position reference information, that the azimuth viewing angle of the viewing position calculated in the azimuth viewing angles of the six azimuths is an azimuth around the viewing position (i.e., calculates the front, the rear, the left, and the right), the calculation procedure is:
calculating an azimuth viewing angle of one azimuth around the viewing position by combining the position reference information; and calculating the azimuth viewing angles of the rest three azimuths according to the calculated angle relation between the azimuth corresponding to the azimuth viewing angle and the other three azimuths around the viewing position.
Specifically, when six azimuth viewing angles of the six-fold screen field need to be calculated, the azimuth viewing angles located at the four directions around the viewing position need to be calculated, namely the azimuth viewing angles in the front, the rear, the left and the right four directions, the angle can be calculated by using a calculation formula in a certain direction, and then the viewing angles in other three directions are respectively calculated according to the angle relationship between other three directions and the angle relationship.
For example, the forward azimuth angle is calculated using an angle-of-view calculation formula for the forward azimuth angle, as shown in fig. 10, the forward azimuth angle is FOV, FOV is 2 ∠ θ, and tan θ is (L)12+ s)/y; where L1 is the lateral length of the viewing space, i.e., the length of the front projection plane in the six-fold screen field, s is the lateral offset from the center of the viewing space, and y is the viewing distance in front of the viewing space.
Different viewing positions, the front azimuth viewing angle and the left azimuth viewing angle, or the azimuth angle between the front azimuth viewing angle and the right azimuth viewing angle is a fixed angle of 180 degrees, and after the front azimuth viewing angle is calculated, the front azimuth viewing angle is subtracted from the fixed angle of 180 degrees, so that the azimuth viewing angle of the left or right azimuth can be obtained.
As shown in FIG. 10, the azimuth angle between the front azimuth view and the right azimuth view is a fixed angle of 180, and the azimuth view of the right azimuth is equal to 180 minus the front azimuth view, since the front and rear azimuth views are equal and the circumferential angle of the viewpoint o is 360, the azimuth view of the left can be calculated in the case where the right azimuth view, ∠ aob, is known.
Optionally, the projection method based on the six-fold screen field further includes: generating a plurality of orthogonal cameras and binding the orthogonal cameras with each other; each orthogonal camera is perpendicular to a plane corresponding to the position of the orthogonal camera; and intercepting a virtual picture corresponding to each position in the virtual scene by using the orthogonal camera.
Specifically, binding the orthogonal cameras with each other means that the coordinates of the orthogonal cameras are the same and are located at the same point. According to the angle of the visual angle, the orthogonal camera is perpendicular to the corresponding plane (such as the plane corresponding to the front), the size and the position of the angle of the visual angle correspond to a unique visual cone, a part of pictures of the virtual scene are intercepted through the visual cone, and a plurality of pictures are seamlessly spliced to obtain an integral stereo space picture.
S203 generating a virtual image corresponding to each azimuth angle by the virtual scene according to each azimuth angle includes:
s213, when the length of a view angle area corresponding to the azimuth view angle of one azimuth is larger than the length of a projection plane corresponding to the azimuth, calculating a cutting area corresponding to the azimuth view angle, and cutting out a corresponding virtual picture in the virtual scene according to the cutting area and the azimuth view angle corresponding to the cutting area;
s223, when the length of the view angle area corresponding to the azimuth view angle of one azimuth is not more than the length of the projection plane corresponding to the azimuth, cutting out a virtual picture corresponding to the azimuth view angle in the virtual scene.
Specifically, after six azimuth viewing angles are calculated, the length of a viewing angle area corresponding to each azimuth viewing angle is analyzed, and if the length of the viewing angle area exceeds the length of a projectable area of the projection surface, a clipping area needs to be calculated, and a normal picture is clipped.
As shown in fig. 10 and 11, since the length of the viewing angle region corresponding to the front azimuth viewing angle is 2s more than the length of the front projection surface and the length of the viewing angle region corresponding to the rear azimuth viewing angle is 2s more than the length of the rear projection surface, it is necessary to calculate the cut region corresponding to both, and cut out the virtual screen to be projected on the corresponding projection surface in the virtual scene according to the orientation viewing angles corresponding to the cut region and the cut region.
Similarly, referring to fig. 10 and 11, since the lengths of the viewing angle regions corresponding to the left and right azimuth viewing angles are not greater than the lengths of their respective corresponding projection surfaces, it is only necessary to directly cut out the virtual frames corresponding to the viewing angle regions in the virtual scene without calculating the clipping regions.
As shown in fig. 8 and 9, as shown in fig. 12 and 4, according to the actual display situation, a virtual picture corresponding to a front azimuth viewing angle may be cut out from a virtual scene, a virtual picture corresponding to a rear azimuth viewing angle may be cut out from the virtual scene, and virtual pictures corresponding to the front and rear azimuth viewing angles may also be cut out from the virtual scene, and the virtual pictures do not cut out normal pictures of the front and rear azimuths in the virtual scene.
As shown in fig. 12 and 4, since the length of the viewing angle region corresponding to the left azimuth viewing angle and the right azimuth viewing angle is larger than the length of the projection plane corresponding to the azimuth, the normal screen needs to be cut when the projection planes of the two azimuths are concerned.
If the viewing position of the viewer is located at the viewpoint as shown in fig. 10 in the six-fold screen field, the virtual frames corresponding to the front, upper, lower and rear projection planes need to be cut out in the virtual scene after the cutting areas are calculated, and the virtual frames corresponding to the left and right projection planes are directly cut out in the virtual scene.
Specifically, the viewing position is a central position, as shown in fig. 7, when the azimuth viewing angles of all the two opposite orientations are equal, the virtual picture obtained by cutting the virtual scene at the central position in each orientation (i.e., the front, left, right, back, up, and down six orientations) is a normal picture, and no clipping is required.
S204, the virtual pictures of the six azimuth viewing angles are fused into a scene picture of a virtual scene watched at the watching position, and the scene picture is projected to a six-fold screen field.
In this embodiment, when the virtual picture corresponding to each azimuth is cut out according to the six azimuths corresponding to the six-fold screen field in the virtual scene, each orthogonal camera intercepts the virtual picture corresponding to each azimuth in the virtual scene by combining the azimuth view angle and the position reference information corresponding to each orthogonal camera.
When the corresponding virtual picture is cut out in the virtual scene according to the cutting area and the azimuth angle corresponding to the cutting area, the azimuth angle, the cutting area and the position reference information corresponding to each orthogonal camera are combined, and each orthogonal camera cuts out the virtual picture corresponding to each azimuth in the virtual scene.
According to an embodiment provided by the present invention, as shown in fig. 3, a projection method based on a six-fold screen field includes: the six-fold screen field with variable projection size is composed of six projection surfaces.
The method comprises the following steps:
s301, position reference information corresponding to the watching position and a virtual scene corresponding to the six-fold screen field with the current projection size are obtained.
S302 calculates the azimuth viewing angles of the viewing position at six azimuths by combining the position reference information.
S303, generating a plurality of orthogonal cameras and binding the orthogonal cameras with one another; each orthogonal camera is perpendicular to a plane corresponding to the position of the orthogonal camera; and intercepting a virtual picture corresponding to each position in the virtual scene by using the orthogonal camera.
Specifically, binding the orthogonal cameras with each other means that the coordinates of the orthogonal cameras are the same and are located at the same point.
S304 the virtual scene generates a virtual picture corresponding to each azimuth angle according to each azimuth angle, which includes the following four cases:
the first method comprises the following steps:
s314, when the X coordinate information in the position reference information is on the X-axis central line and the Y coordinate information in the position reference information is not on the Y-axis central line, cutting the position reference information into corresponding virtual pictures according to the azimuth viewing angle corresponding to the X axis in the virtual scene;
s324, when the X coordinate information in the position reference information is on the X-axis central line and the Y coordinate information in the position reference information is not on the Y-axis central line, respectively calculating cutting areas corresponding to the orientation visual angles corresponding to the coordinate information on the residual axes in the position reference information, and cutting out corresponding virtual pictures in the virtual scene according to the cutting areas and the orientation visual angles corresponding to the cutting areas.
Specifically, the X-axis centerline is a line that is 1/2 transverse length of the viewing space and parallel to the Y-axis; if the viewing space is 4 m long and 2m wide, the X-axis center line is a straight line 1m wide and parallel to the Y-axis.
The X-axis centerline is a line of 1/2 transverse length of the viewing space and parallel to the Y-axis; when the viewing space is expressed in pixels, the specification is 800dp in length and 400dp in width, and the X-axis center line is a straight line 200dp in width and parallel to the Y-axis.
When the X coordinate information in the position reference information is 1m or 200dp, if the X axis corresponds to the front and rear positions, according to the actual display condition (i.e. the wall surface position condition of the six-fold screen), a virtual picture corresponding to the front position view angle can be cut out from the virtual scene, a virtual picture corresponding to the rear position view angle can be cut out from the virtual scene, and virtual pictures corresponding to the front and rear position view angles can be cut out from the virtual scene, so that the virtual pictures do not cut out the normal pictures in the front and rear positions in the virtual scene.
When the position reference information contains Y coordinate information and Z coordinate information, if the Y axis corresponds to a left direction and a right direction, the Z axis corresponds to an upper direction and a lower direction.
The pictures corresponding to the left direction view angle, the right direction view angle, the upper direction view angle and the lower direction view angle are not normal pictures any more, and the normal pictures need to be cut.
And cutting out virtual pictures corresponding to the left azimuth viewing angle, the right azimuth viewing angle, the upper azimuth viewing angle and the lower azimuth viewing angle.
And the second method comprises the following steps:
s334, when the X coordinate information in the position reference information is not on the X-axis central line and the Y coordinate information in the position reference information is on the Y-axis central line, cutting the position reference information into corresponding virtual pictures according to the azimuth viewing angle corresponding to the Y axis in the virtual scene;
s344, when the X coordinate information in the position reference information is not on the X-axis central line and the Y coordinate information in the position reference information is on the Y-axis central line, respectively calculating cutting areas corresponding to the orientation viewing angles corresponding to the coordinate information on the remaining axes in the position reference information, and cutting out a corresponding virtual picture in the virtual scene according to the cutting areas and the orientation viewing angles corresponding to the cutting areas.
Specifically, when the Y coordinate information in the position reference information is 2m or 400dp, if the two left and right directions corresponding to the Y axis are required according to the actual display situation, the virtual frame corresponding to the left direction view angle can be cut out in the virtual scene, the virtual frame corresponding to the right direction view angle can be cut out in the virtual scene, and the virtual frames corresponding to the left and right direction view angles can be cut out in the virtual scene, so that the virtual frames do not cut out the normal frames of the left and right directions in the virtual scene.
When the position reference information contains X coordinate information and Z coordinate information, if the X axis corresponds to the front and rear directions, the Z axis corresponds to the upper and lower directions.
The pictures corresponding to the front azimuth viewing angle, the rear azimuth viewing angle, the upper azimuth viewing angle and the lower azimuth viewing angle are no longer normal pictures, and the normal pictures need to be cut.
And cutting out virtual pictures corresponding to the front azimuth viewing angle, the rear azimuth viewing angle, the upper azimuth viewing angle and the lower azimuth viewing angle.
And the third is that:
s354, when the X coordinate information is not on the X-axis central line and the Y coordinate information is not on the Y-axis central line, respectively calculating cutting areas corresponding to all the azimuth viewing angles; s364 cuts out a corresponding virtual screen in the virtual scene according to each orientation angle and cutting area.
Specifically, when the X coordinate information in the position reference information is not on the X-axis central line and the Y coordinate information in the position reference information is not on the Y-axis central line, the frames corresponding to the front azimuth viewing angle, the rear azimuth viewing angle, the left azimuth viewing angle, the right azimuth viewing angle, the upper azimuth viewing angle, and the lower azimuth viewing angle are no longer normal frames, and the normal frames need to be cut.
And cutting out virtual pictures corresponding to the front azimuth viewing angle, the rear azimuth viewing angle, the left azimuth viewing angle, the right azimuth viewing angle, the upper azimuth viewing angle and the lower azimuth viewing angle.
And fourthly:
when the X coordinate information is on the X-axis central line and the Y coordinate information is also on the Y-axis central line, the virtual picture formed by cutting the virtual scene in each direction (namely, front, left, right, back, upper and lower directions) is a normal picture, and cutting is not needed.
S305, the virtual pictures of the six azimuth viewing angles are fused into a scene picture of a virtual scene watched at the watching position, and the scene picture is projected to a six-fold screen field.
In this embodiment, when the virtual picture corresponding to each position is cut out from the virtual scene, the position view angle and the position reference information corresponding to each orthogonal camera are combined, and each orthogonal camera intercepts the virtual picture corresponding to each position in the virtual scene.
When the corresponding virtual picture is cut out in the virtual scene according to the cutting area and the azimuth angle corresponding to the cutting area, the azimuth angle, the cutting area and the position reference information corresponding to each orthogonal camera are combined, and each orthogonal camera cuts out the virtual picture corresponding to each azimuth in the virtual scene.
In the above embodiments, when the cropping area corresponding to each azimuth viewing angle is calculated, there are two calculation schemes:
the first calculation scheme is as follows:
calculating a view angle picture parameter corresponding to each direction according to the position reference information and the direction view angle corresponding to each direction; and calculating the cutting area corresponding to each direction according to the visual angle picture parameter and the viewing space parameter corresponding to each direction.
Specifically, under the condition that the azimuth viewing angle is known, the position reference information contains the viewing distance; the length of the viewing angle region at each orientation at the viewing position can be calculated as a viewing angle picture parameter.
The viewing space parameter corresponding to each direction refers to the transverse length of the wall corresponding to the direction, and the projectable length is fixed, so that the viewing space parameter is known. And subtracting the length of the wall surface from the length of the view angle area to obtain a cutting area corresponding to each direction.
The second calculation scheme is as follows:
and analyzing the position deviation information of the position reference information relative to the preset position information, and calculating the corresponding cutting area by combining the position deviation information.
Specifically, as shown in fig. 10, the virtual screen corresponding to the front view angle has a length of 2s to be cut, the front view angle is FOV, FOV is 2 ∠ θ, and tan θ is (L)12+ s)/y; where L1 is the lateral length of the viewing space, s is the lateral offset from the center position of the viewing space, and y is the viewing distance directly in front within the viewing space.
As shown in fig. 11, the virtual frame corresponding to the rear azimuth view has a length of 2s to be cut; the rear azimuth viewing angle is the FOV,
tanθ＝(L1/2+s)/(L2-y); where L2 is the longitudinal length of the viewing space, s is the lateral offset from the center position of the viewing space, and y is the viewing distance directly in front within the viewing space.
As shown in fig. 12, the virtual screen corresponding to the left azimuth angle has a length of 2p to be cut, FOV 2 ∠α for the left azimuth angle, and tan α (L)22+ p)/x; where L2 is the longitudinal length of the viewing space, p is the longitudinal offset value from the central position of the viewing space, and x is the viewing distance to the left within the viewing space.
According to an embodiment provided by the present invention, a six-fold screen yard comprises: each projection surface is connected with four projection surfaces in the other five projection surfaces; and the projection size of at least one projection surface is variable.
Specifically, the specific positions of the six projection surfaces are a six-fold screen field which is composed of front, back, upper, lower, left and right projection surfaces and has a three-dimensional space (as projection)
Each projection surface is correspondingly provided with one or more projection devices, so that a foundation is provided for projection of subsequent scene pictures. The plurality of projection devices are responsible for one projection surface, so that the projection effect with high definition can be obtained even if the projection surface with long length (for example, 6 meters and 8 meters) is projected. For example: a projection plane 8 meters long is responsible for projecting half by 2 projection devices respectively, one projection plane projects a scene picture 4 meters in front of the projection plane, and the other projection plane projects a scene picture 4 meters behind the projection plane, so that the projection effect is ensured.
Optionally, the projection surface with the variable projection size is a movable wall surface, and the projection size of the projection surface is changed in a moving mode; or the projection surface with the variable projection size is a foldable and contractible movable wall surface, and the projection size of the projection surface is changed in a folding and contraction mode; or the projection surface with the variable projection size is a plurality of pull-down curtains, and the projection size of the projection surface is changed in a folding and unfolding mode.
There are various ways to vary the size of the six-fold screen field, for example: 1. the projection surface/surfaces is/are movable wall surfaces which can move along the guide rail, and the projection size of the projection surface is changed in a moving mode, so that the projectable range of the six-fold screen field is changed; 2. one or more projection surfaces are movable wall surfaces which can be folded and contracted like folding fans, the projection size of the projection surface is changed by folding and contracting the corresponding movable wall surface according to actual requirements, and the projectable range of the six-fold screen field is adjusted; 3. the projection surfaces (such as front, left, right and back) on the side surfaces are provided with a plurality of curtains which are arranged above according to a grid, the width of the curtain is set according to the requirement (such as 50cm), when the wall surfaces in the front, left, right and back directions are required, the curtain at the corresponding position can be put down, the specific amount of the curtain to be put down is determined according to the front, left, right and back dimensions, and taking the projection surface in front of 3 meters long and a single curtain of 50cm as an example, 6 curtains are put down to form the projection surface in front. Of course, other ways of varying the projection size of the six-fold screen field are also included, and are not limited herein.
The projection size of one projection surface in the six-fold screen field can be changed, the projection sizes of other five projection surfaces are not changed, the projection sizes of two projection surfaces are also changed, the projection sizes of the rest four projection surfaces are not changed, the projection sizes of three projection surfaces are also changed, the projection sizes of the rest three projection surfaces are not changed, the projection sizes of four projection surfaces are also changed, the projection sizes of the rest two projection surfaces are not changed, the projection sizes of five projection surfaces are also changed, the size of the rest one projection surface is not changed, or the projection sizes of six projection surfaces are all changed and are selected according to actual requirements.
The six-fold screen field of the embodiment can change the size of the projection surface according to the requirements of users, can be flexibly applied to users with different requirements, and improves the use experience of the users.
According to an embodiment of the present invention, as shown in fig. 5, a projection system based on a six-fold screen field includes: the intelligent device 10, the projection device 20 and the six-fold screen field; the intelligent device 10 is in communication connection with the projection device 20;
six book curtain places include: each projection surface is connected with at least four projection surfaces in the other five projection surfaces; and the projection size of at least one projection surface is variable.
Optionally, the projection surface with the variable projection size is a movable wall surface, and the projection size of the projection surface is changed in a moving mode; or the projection surface with the variable projection size is a foldable and contractible movable wall surface, and the projection size of the projection surface is changed in a folding and contraction mode; or the projection surface with the variable projection size is a plurality of pull-down curtains, and the projection size of the projection surface is changed in a folding and unfolding mode.
Projection system based on six book curtain place still includes: and a position obtaining module 30, configured to obtain position reference information corresponding to the viewing position.
Specifically, the position acquisition module can be arranged in the mobile terminal, and also can be arranged in the intelligent device to acquire the watching position of the user, and if the position acquisition module is arranged in the intelligent device, the intelligent device can move along with the user, so that the projected scene picture can be changed conveniently according to the position of the user.
The smart device 10 includes:
and the scene obtaining module 11 is configured to obtain a virtual scene corresponding to the six-fold screen field with the current projection size.
And the viewing angle calculation module 12 is electrically connected with the scene acquisition module 11 and is used for calculating the azimuth viewing angles of the viewing position in six azimuths by combining the position reference information.
And the picture generation module 13 is electrically connected with the view angle calculation module 12 and is used for generating a virtual picture corresponding to each azimuth view angle according to each azimuth view angle in the virtual scene.
Specifically, a plurality of orthogonal cameras are generated and bound with each other (for example, the coordinates of each orthogonal camera are the same); each orthogonal camera is perpendicular to a plane corresponding to the position of the orthogonal camera; and intercepting a virtual picture corresponding to each position in the virtual scene by using the orthogonal camera.
And the picture fusion module 14 is configured to fuse the virtual pictures at the six azimuth viewing angles into a scene picture of a virtual scene viewed at the viewing position.
The projection device 20 projects the scene picture onto the six-fold screen field, and the inner side of the six-fold screen field forms a viewing space.
In addition to the above, the present embodiment further includes the following contents:
in one mode, the viewing angle calculating module 12 is configured to calculate, when the azimuth viewing angle calculated by the viewing position in the azimuth viewing angles in six azimuths is the azimuth around the viewing position by combining the position reference information, the calculating process is as follows:
the viewing angle calculation module 12 is configured to calculate an azimuth viewing angle of an azimuth around the viewing position in combination with the position reference information; and calculating the azimuth viewing angles of the remaining three azimuths according to the calculated angular relationship between the azimuth corresponding to the azimuth viewing angle and the other three azimuths around the viewing position.
In another mode, the angle-of-view calculating module 12, configured to calculate the azimuth angles of the viewing position in six azimuths by combining the position reference information, includes: the viewing angle calculation module 12 calculates the viewing angles of the viewing position in the six directions respectively by combining the position reference information and the viewing angle calculation formulas in the six directions.
In one mode, the picture generating module 13, configured to generate, by the virtual scene according to each azimuth angle, a virtual picture corresponding to each azimuth angle, includes:
the picture generation module 13 is configured to calculate a cutting area corresponding to an azimuth viewing angle when a viewing angle area length area corresponding to the azimuth viewing angle of an azimuth is greater than a projection surface area length corresponding to the azimuth, and cut out a corresponding virtual picture in a virtual scene according to the cutting area and the azimuth viewing angle corresponding to the cutting area; and when the length of the view angle area corresponding to the azimuth view angle of one azimuth is not more than the length area of the projection surface corresponding to the azimuth, cutting out a virtual picture corresponding to the azimuth view angle in the virtual scene.
In another mode, the picture generating module 13, configured to generate, by the virtual scene according to each azimuth angle, a virtual picture corresponding to each azimuth angle, includes:
the picture generation module 13 is configured to cut the position reference information into corresponding virtual pictures according to the azimuth viewing angle corresponding to the X axis in the virtual scene when the X coordinate information is on the X axis central line and the Y coordinate information is not on the Y axis central line; and respectively calculating cutting areas corresponding to the orientation visual angles corresponding to the coordinate information on the residual axes in the position reference information, and cutting out corresponding virtual pictures in the virtual scene according to the cutting areas and the orientation visual angles corresponding to the cutting areas.
The picture generation module 13 is configured to cut the position reference information into corresponding virtual pictures according to the azimuth viewing angle corresponding to the Y axis in the virtual scene when the X coordinate information in the position reference information is not on the X axis central line and the Y coordinate information in the position reference information is on the Y axis central line; and respectively calculating cutting areas corresponding to the orientation visual angles corresponding to the coordinate information on the residual axes in the position reference information, and cutting out corresponding virtual pictures in the virtual scene according to the cutting areas and the orientation visual angles corresponding to the cutting areas.
The picture generation module 13 is used for respectively calculating the cutting areas corresponding to all the azimuth viewing angles when the X coordinate information is not on the X-axis central line and the Y coordinate information is not on the Y-axis central line; and cutting out a corresponding virtual picture in the virtual scene according to each azimuth angle and cutting area.
And the picture generation module 13 is configured to cut the corresponding virtual pictures for each azimuth viewing angle in the virtual scene when the X coordinate information in the position reference information is on the X-axis central line and the Y coordinate information in the position reference information is on the Y-axis central line.
One way, calculating a cropping area corresponding to the orientation view specifically includes: calculating a view angle picture parameter corresponding to each direction according to the position reference information and the direction view angle corresponding to each direction; and calculating the cutting area corresponding to each direction according to the visual angle picture parameter and the viewing space parameter corresponding to each direction.
In another mode, the calculating the cropping area corresponding to the azimuth viewing angle specifically includes: and analyzing the position deviation information of the position reference information relative to the preset position information, and calculating the corresponding cutting area by combining the position deviation information.
The position obtaining module 30 is configured to obtain the position reference information corresponding to the viewing position, and specifically includes: converting the viewing position information in the viewing space into virtual position information in the virtual scene according to the corresponding relation between the space coordinates of the viewing space and the virtual coordinates of the virtual scene; and using the virtual position information as position reference information; or, converting the viewing position information in the viewing space into position pixel information in the virtual scene according to the corresponding relationship between the space coordinates of the viewing space and the picture pixels of the virtual scene; and the positional pixel information is used as positional reference information.
The scene model of the virtual scene and the space model of the viewing space (i.e. the space model of the six-fold screen field) have a specific proportional relationship. The specific proportion relation is 1: 1.
specifically, the implementation process of this embodiment of the system is the same as that of the above embodiment of the method, and is not described in detail here. The smart device 20 may be a computer.
In the embodiment, the six-fold screen field has variable size, can change the projection range according to actual requirements, is flexible and changeable, and is wide in application; the scene picture projected to the six-fold screen field can change along with the change of the watching position, so that a viewer really watches the stereoscopic scene image, and the use experience of a user is greatly improved.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (12)
1. A projection method based on a six-fold screen field is characterized by comprising the following steps: the six-fold screen field with variable projection size consists of six projection surfaces;
the method comprises the following steps:
acquiring position reference information corresponding to a viewing position and a virtual scene corresponding to the six-fold screen field with the current projection size;
calculating azimuth viewing angles of the viewing position in six azimuths by combining the position reference information;
the virtual scene generates a virtual picture corresponding to each azimuth angle according to each azimuth angle;
and fusing the virtual pictures with six azimuth visual angles into a scene picture for watching the virtual scene at the watching position, and projecting the scene picture to the six-fold screen field.
2. The screen yard projection method based on six-fold screen as claimed in claim 1, wherein when the azimuth viewing angle calculated by said viewing position in the azimuth viewing angles of six azimuth is the azimuth around said viewing position calculated by combining the position reference information, the calculation process is:
calculating an azimuth viewing angle of an azimuth around the viewing position by combining the position reference information;
and calculating the azimuth viewing angles of the rest three azimuths according to the calculated angle relation between the azimuth corresponding to the azimuth viewing angle and the other three azimuths around the viewing position.
3. The screen yard projection method of claim 1, wherein said calculating azimuthal perspectives of said viewing position in six directions in combination with position reference information comprises:
and respectively calculating the azimuth viewing angles of the viewing position in six azimuths by combining the position reference information and the viewing angle calculation formulas in six azimuths.
4. The projection method based on the six-fold screen yard as claimed in claim 1, wherein the generating of the virtual picture corresponding to each azimuth viewing angle by the virtual scene according to each azimuth viewing angle comprises:
when the length of a visual angle area corresponding to the azimuth visual angle of one azimuth is larger than the length of a projection plane corresponding to the azimuth, calculating a cutting area corresponding to the azimuth visual angle, and cutting out a corresponding virtual picture in a virtual scene according to the cutting area and the azimuth visual angle corresponding to the cutting area;
and when the length of a view angle area corresponding to the azimuth view angle of one azimuth is not more than the length of a projection plane corresponding to the azimuth, cutting out a virtual picture corresponding to the azimuth view angle in a virtual scene.
5. The projection method based on the six-fold screen field as claimed in claim 4, wherein the calculating the clipping area corresponding to the azimuth viewing angle specifically includes:
calculating a view angle picture parameter corresponding to each direction according to the position reference information and the direction view angle corresponding to each direction;
and calculating the cutting area corresponding to each direction according to the visual angle picture parameter and the viewing space parameter corresponding to each direction.
6. The projection method based on the six-fold screen yard as claimed in claim 1, wherein the generating of the virtual picture corresponding to each azimuth viewing angle by the virtual scene according to each azimuth viewing angle comprises:
when the X coordinate information in the position reference information is on the X-axis central line and the Y coordinate information in the position reference information is not on the Y-axis central line, cutting the position reference information into corresponding virtual pictures according to the azimuth viewing angle corresponding to the X axis in the virtual scene;
and respectively calculating cutting areas corresponding to the orientation visual angles corresponding to the coordinate information on the residual axes in the position reference information, and cutting out corresponding virtual pictures in the virtual scene according to the cutting areas and the orientation visual angles corresponding to the cutting areas.
7. The projection method based on the six-fold screen yard as claimed in claim 1, wherein the generating of the virtual picture corresponding to each azimuth viewing angle by the virtual scene according to each azimuth viewing angle comprises:
when the X coordinate information in the position reference information is not on the X-axis central line and the Y coordinate information in the position reference information is on the Y-axis central line, cutting the position reference information into corresponding virtual pictures according to the azimuth viewing angle corresponding to the Y axis in the virtual scene;
and respectively calculating cutting areas corresponding to the orientation visual angles corresponding to the coordinate information on the residual axes in the position reference information, and cutting out corresponding virtual pictures in the virtual scene according to the cutting areas and the orientation visual angles corresponding to the cutting areas.
8. The projection method based on the six-fold screen yard as claimed in claim 1, wherein the generating of the virtual picture corresponding to each azimuth viewing angle by the virtual scene according to each azimuth viewing angle comprises:
when the X coordinate information is not on the X-axis central line and the Y coordinate information is not on the Y-axis central line, respectively calculating cutting areas corresponding to all the azimuth viewing angles;
and cutting out a corresponding virtual picture in the virtual scene according to each azimuth visual angle and the cutting area.
9. The projection method based on the six-fold screen field as claimed in claim 6, 7 or 8, wherein the calculating of the clipping area corresponding to the azimuth viewing angle specifically comprises:
and analyzing the position deviation information of the position reference information relative to the preset position information, and calculating the corresponding cutting area by combining the position deviation information.
10. A six-fold screen yard applied to the projection method based on the six-fold screen yard according to any one of claims 1 to 9, comprising: each projection surface is connected with four projection surfaces in the other five projection surfaces; and the projection size of at least one projection surface is variable.
11. The six-fold screen yard of claim 10, wherein:
the projection surface with the variable projection size is a movable wall surface, and the projection size of the projection surface is changed in a moving mode;
or the projection surface with the variable projection size is a foldable and contractible movable wall surface, and the projection size of the projection surface is changed in a folding and contraction mode;
or the projection surface with the variable projection size is a plurality of pull-down curtains, and the projection size of the projection surface is changed in a folding and unfolding mode.
12. A projection system based on six-fold screen field is characterized by comprising: the system comprises intelligent equipment, projection equipment and a six-fold screen field;
six book curtain places include: each projection surface is connected with at least four projection surfaces in the other five projection surfaces; the projection size of at least one projection surface is variable;
the projection system based on six-fold screen field further comprises:
the position acquisition module is used for acquiring position reference information corresponding to the watching position;
the smart device includes:
the scene acquisition module is used for acquiring a virtual scene corresponding to the six-fold screen field with the current projection size;
the viewing angle calculation module is used for calculating azimuth viewing angles of the watching position in five azimuths by combining the position reference information;
the image generation module is used for generating a virtual image corresponding to each azimuth angle according to each azimuth angle in the virtual scene;
the image fusion module is used for fusing the virtual images of the six azimuth visual angles into a scene image for watching the virtual scene at the watching position;
the projection equipment projects the scene picture to the six-fold screen field, and the inner side of the six-fold screen field forms the watching position.
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Application publication date: 20200421 |
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