CN115134567A - Projection picture fusion area correction method, projection picture fusion area correction system, projection system, and medium - Google Patents
Projection picture fusion area correction method, projection picture fusion area correction system, projection system, and medium Download PDFInfo
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- CN115134567A CN115134567A CN202210555113.2A CN202210555113A CN115134567A CN 115134567 A CN115134567 A CN 115134567A CN 202210555113 A CN202210555113 A CN 202210555113A CN 115134567 A CN115134567 A CN 115134567A
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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
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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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Abstract
The invention relates to a projection picture fusion area correction method, a projection picture fusion area correction system, a projection system, a medium and a projection device. The correction method comprises the following steps that a plurality of projection pictures are provided, each projection picture comprises an effective picture and a dark area picture corresponding to the effective picture, the dark area pictures are located around the effective picture, adjacent projection pictures are fused to form a fusion area, the adjacent effective pictures form an effective fusion area, and the adjacent dark area pictures form an invalid fusion area, and the correction method comprises the following steps: each projection picture has a respective corresponding reference point, and the reference point is a point marked by a dark-area picture corresponding to the projection picture in the alignment state of the effective fusion area; each projection picture displays a positioning light spot aligned to a corresponding projection picture datum point in an original state on a dark picture, and the positioning light spot is linked with an effective picture of the projection picture corresponding to the positioning light spot; and after the positioning light spots are displaced, adjusting the positioning light spots to the positions of the respective corresponding reference points, thereby adjusting the positions of the linked effective pictures to correct the effective fusion area.
Description
Technical Field
The present invention relates to the field of projection correction, and more particularly, to a method and system for correcting a fusion region of a projection image, a projection system, and a medium.
Background
Due to environmental factors including temperature, humidity, air pressure and other factors and differences of engineering installation structures, an image projected by an existing projector is shifted, so that the image projected by the projector is deformed.
When a plurality of projectors project a plurality of images, the projection pictures need to be subjected to projection fusion so that the projection pictures are fused and spliced into a complete image and displayed on a screen, a fusion area is formed by the fused part between every two adjacent projection pictures, generally, only the fusion area needs to be aligned, and the two adjacent projection pictures are aligned to present the complete image. The shift of the projection images may cause the blending area to be difficult to align, and the contents displayed by the two projection images and the middle blending area may become blurred.
In the prior art, generally, the image is aligned with the corner points of the projection carrier by adjusting the corner points in the projection picture, and the blending regions are aligned by adjusting the debugging points (the corner points in the projection picture, the points in the blending regions) in the blending regions, however, since the debugging points cannot be acquired when the projector is projecting normal content, that is, in normal use, this alignment method needs to acquire and adjust the debugging points when the projector is in a debugging mode, and cannot project normal content on the screen when the projector is in the debugging mode, in other words, the method of the prior art cannot be used to correct the offset of the projection picture when the projector projects normal content.
Disclosure of Invention
The present invention is directed to overcome at least one of the above-mentioned drawbacks (i.e., deficiencies) of the prior art, and to provide a method, a system, a projection system, and a medium for calibrating a fusion area of a plurality of projection pictures, which are used to achieve accurate calibration alignment between the plurality of projection pictures, and do not affect the normal content played by a projector during calibration.
The technical solution adopted by the first aspect of the present invention is,
the method for correcting the fusion area of the projection pictures comprises the following steps of:
each projection picture is provided with a respective corresponding reference point, and the reference point is a point marked by a dark area picture corresponding to each projection picture in an effective fusion area alignment state; each projection picture displays a positioning light spot aligned to a corresponding projection picture datum point in an original state on a dark picture, and the positioning light spot is linked with an effective picture of the corresponding projection picture;
and after the positioning light spots are displaced, adjusting the positions of the positioning light spots to the respective corresponding reference points, thereby adjusting the positions of the linked effective pictures to correct the effective fusion area.
When an effective picture is normally projected, a dark area picture is simultaneously displayed around the effective picture, a reference point of each projection picture is obtained in advance when the effective picture is in an aligned state, the reference point is not linked with the projection picture, and the position information of the reference point is fixed; the original state is an effective picture alignment state, and since the reference point is marked by the corresponding dark-area picture, the positioning light spot projected by taking the reference point as the reference in the original state can be also in the dark-area picture of the projection picture, and the adjustment based on the positioning light spot can be performed on the dark-area picture of the projection picture. When the projection is in normal use, the positioning light spots in the dark area pictures are adjusted to the reference points of the projection pictures by adjusting the positioning light spots when the positioning light spots are displaced, the reference points represent the calibration points of the positioning light spots, the positioning light spots move to drive the effective pictures of the projection pictures to be linked, and the effective pictures of the projection pictures are aligned when the positioning light spots are aligned to the reference points, so that the effective fusion area is corrected.
Further, an acquisition area is established around the respective reference point of each projection picture;
collecting the positioning light spots in the collecting area;
collecting positioning light spots and acquiring position information of the positioning light spots;
adjusting the position information of the positioning light spot to be matched with the position information of the reference point;
and each projection picture moves along with the positioning light spot, so that the position of the effective picture is adjusted to correct the effective fusion area.
And if the positioning light spot can be collected in the collecting area, the positioning light spot and the reference point can be aligned by matching the collected position information of the positioning light spot with the position information of the reference point, so that the projection pictures are driven to be linked and aligned, and the effective fusion area is corrected.
Further, the reference point is a point marked by the invalid fusion area corresponding to each projection picture in the state that the valid fusion areas are aligned in the invalid fusion area, and the acquisition area is at least partially overlapped with the invalid fusion area of the corresponding projection picture. The reference points are marked based on the invalid fusion area, the positioning light spots are collected in the collection area established based on the reference points, and the collected positioning light spots are adjusted to be capable of linking the alignment of the valid fusion area more accurately.
Further, the effective picture is projected on a projection carrier, a physical mark point is arranged outside the boundary of the projection carrier, and any point close to the physical mark point in a dark-area picture of each projection picture is selected as a reference point in the alignment state of the effective fusion area.
Further, the effective picture is projected on a projection carrier, and a light spot acquisition device is arranged outside the boundary of the projection carrier;
the reference point is a coordinate or a coordinate area of a dark area picture of each projection picture near the light spot acquisition device under the condition that the effective fusion area is aligned;
the collecting area is the collecting range of the light spot collecting device.
Further, before each of the projection pictures acquires the positioning light spot in the respective acquisition region, the method further includes:
and adjusting the projection pictures to preliminarily align the fusion images of the adjacent effective pictures and enable the positioning light spots to be positioned in an overlapping area.
Further, the reference point is a central point of the collection range of the light spot collection device. The central point of the acquisition range of the light spot acquisition device is directly used as a reference point for marking, and the position of the reference point can be positioned more quickly, so that the adjustment of the positioning light spot can be realized more quickly.
The second aspect of the present invention adopts the technical proposal that,
providing a plurality of projection pictures with fusion area correction system, each projection picture comprises an effective picture and a dark area picture corresponding to the effective picture, the dark area pictures are positioned around the effective picture, adjacent projection pictures are fused to form a fusion area, the adjacent effective pictures form an effective fusion area, the adjacent dark area pictures form an ineffective fusion area,
the correction system includes:
the datum mark module is used for marking a datum point corresponding to the dark area picture of each projection picture in an effective fusion area alignment state;
the positioning light spot module is used for displaying positioning light spots aligned to corresponding projection picture reference points of each projection picture in an original state on a dark-area picture of the projection picture, and the positioning light spots are linked with the effective picture of the projection picture corresponding to the positioning light spots;
and the correction module is used for adjusting the positions of the positioning light spots to the respective corresponding reference points after the positioning light spots are displaced, so as to adjust the position of the linked effective picture and correct the effective fusion area.
The third aspect of the present invention adopts the technical proposal that,
a projection system is provided, which comprises a plurality of projectors and a projection carrier, wherein the plurality of projectors are used for projecting a plurality of projection pictures on the projection carrier, each projection picture comprises an effective picture and a dark picture corresponding to the effective picture, the dark pictures are positioned around the effective picture, adjacent projection pictures are fused to form a fusion area, the adjacent effective pictures form an effective fusion area, the adjacent dark pictures form an ineffective fusion area,
the projection system further comprises a correction device, wherein the correction device is arranged on at least one side edge of the projection carrier and is used for executing the projection picture fusion area correction method.
The technical solution adopted by the fourth aspect of the present invention is,
there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the projection screen fusion area correction method.
Compared with the prior art, the invention has the beneficial effects that:
the projector can align the projection pictures when projecting the contents to be played, and does not need to jump to a specific preset debugging mode to correct and align.
Drawings
Fig. 1 is a flowchart of a method for correcting a fusion area of a projection image according to embodiment 1 of the present invention.
Fig. 2 is a schematic diagram of a plurality of projection pictures according to embodiment 1 of the present invention.
Fig. 3 is a flowchart of a method for correcting a fusion area of a projection image according to embodiment 2 of the present invention.
Fig. 4 is a system diagram of a projection frame fusion area correction system according to embodiment 4 of the present invention.
Fig. 5 is a schematic diagram of a projection system according to embodiment 5 of the present invention.
Fig. 6 is a partial enlarged view of fig. 4 of the present invention.
Description of the specific figures: 1-effective picture; 2-dark area picture; 3-an effective fusion region; 4-null fusion region; 5, positioning light spots; 6-a projector; 7-a projection carrier; 8-physical mark points; 9-correction means.
Detailed Description
The drawings are only for purposes of illustration and are not to be construed as limiting the invention. For a better understanding of the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
As shown in fig. 1, the present embodiment provides a method for correcting a fusion area of a projection image.
As shown in fig. 2, the number of the projection pictures is multiple, each projection picture includes an effective picture 1 and a dark area picture 2 corresponding to the effective picture 1, the dark area pictures 2 are located around the effective picture 1, adjacent projection pictures are fused to form a fusion area, the adjacent effective pictures 1 form an effective fusion area 3, and the adjacent dark area pictures 2 form an ineffective fusion area 4.
The effective frame 1 is used for displaying the projection playing content, and the dark frame 2 does not display the projection playing content. The effective picture 1 is projected on the projection carrier, and the dark picture 2 is located at the peripheral edge of the projection carrier.
The correction method comprises the following steps:
s1: each projection picture has a respective corresponding reference point, and the reference point is a point marked by a dark-area picture corresponding to each projection picture in the alignment state of the effective fusion area 3; each projection picture displays a positioning light spot 5 aligned to a corresponding projection picture reference point in an original state on a dark-area picture 2, and the positioning light spot 5 is linked with an effective picture 1 of the projection picture corresponding to the positioning light spot 5.
The positioning light spot 5 is used for adjusting the corresponding effective picture 1. It can be understood that the projection image and the corresponding positioning light spot 5 are projected by the same projector, and therefore, each positioning light spot 5 is linked with the effective image 1 of the projection image corresponding to the positioning light spot 5. Specifically, when the position of the positioning spot 5 is adjusted, the position of the effective picture 1 linked with the positioning spot also changes, and since the reference point is marked by the dark-area picture 2 corresponding to each projection picture in the alignment state of the effective fusion area 3, the positioning spot aligned with the reference point in the original state can fall into the dark-area picture 2 of the projection picture, that is, the position of the effective picture 1 can be adjusted by adjusting the position of the positioning spot 5 on the dark-area picture 2, so that the correction of the projection picture is realized.
In the specific implementation process, the reference points can be marked in advance, when the effective fusion areas 3 of the projection pictures are aligned, a point corresponding to a dark area picture of each projection picture is selected as the reference point in advance, the position information of the reference point is recorded after the reference point is selected, and the reference point is not linked with the effective picture 1; and simultaneously, when the effective fusion areas 3 of the projection pictures are aligned, displaying a positioning light spot 5 aligned with the corresponding reference point on the dark area picture 2 of each projection picture, wherein the positioning light spot 5 is in an original state. Because the positioning light spot 5 is positioned in the dark-area picture 2, the projector can align the projection pictures when projecting the contents to be played, the projector does not need to jump to a specific preset debugging mode to correct and align, the effective picture 1 can still display the projection playing contents in the correction process, the watching experience of audiences is not influenced, and the correction process is simplified.
Preferably, when the number of the projectors is two, at least one positioning light spot 5 is projected on the dark area picture 2 of one projection picture, that is, at least two positioning light spots 5 projected by different projectors are displayed, and the two positioning light spots 5 are respectively aligned to the corresponding reference points by adjusting the positions of the two positioning light spots 5, so that the two effective pictures 1 linked in alignment are aligned, splicing and fusion of adjacent projection pictures are realized, and the two projection pictures can jointly display complete and normal projection playing contents.
The closer the positioning light spot 5 and the effective picture 1 are, the more obvious the linkage relation is, and the more accurate the alignment of the effective fusion area 3 and the effective picture 1 is by adjusting the positioning light spot 5.
S2: and after the positioning light spots 5 are displaced, adjusting the positions of the positioning light spots 5 to the respective corresponding reference points, thereby adjusting the position adjustment of the linked effective picture 1 to correct the effective fusion area 3. In the projection use process, the linked positioning light spots 5 are displaced due to the deviation of the projection picture, and the linked effective picture 1 can be adjusted by adjusting the positions of the positioning light spots 5 when the positioning light spots 5 deviate from the original positions. And a reference point is determined in each projection picture, the reference point is not deformed along with the deformation of the projection picture, so that the reference point can be used as a calibration point for correcting the projection picture, a positioning light spot 5 is defined in a dark-area picture 2 of the projection picture, the original state of the positioning light spot 5 is aligned to the corresponding reference point, and the fusion area of the effective picture 1 can be realized by adjusting the positioning light spot 5 to be aligned with the reference point again after the positioning light spot 5 is displaced. The correction in this way does not affect the normal playing of the effective picture 1, and can realize the correction of the fusion area while not affecting the user to watch the effective picture 1.
Example 2
The present embodiment and embodiment 1 provide a method for correcting a fusion area of a projection image based on the same inventive concept. The other steps of this embodiment are the same as those of embodiment 1, and as shown in fig. 3, the difference is that the specific step of S2 includes:
s21: establishing an acquisition area around the respective reference point of each projection picture;
in order to quickly position and accurately collect the positioning light spots 5, the positions of the reference points are preset, a collecting area can be established around the reference points, the positioning light spots 5 are collected in the collecting area, the positioning light spots 5 are collected, the positions of the positioning light spots 5 can be quickly adjusted, accordingly, linked effective pictures can be quickly adjusted, and correction can be quickly completed.
Preferably, there are a variety of embodiments for establishing acquisition regions based on fiducial points. For example, with the reference point as the center, an acquisition region is established; or, establishing an acquisition area by taking the datum point as one angular point of the acquisition area; or, establishing a collection area by taking the datum point as the midpoint of the boundary of the collection area; or, a coordinate system is established by taking the reference point as a coordinate origin, and an acquisition area is established near the invalid fusion area 4 based on the coordinate system, so that the acquisition area is partially overlapped with the invalid fusion area 4 and has a coordinate corresponding relation with the reference point.
S22: the positioning spots 5 are acquired in the acquisition zone.
It can be understood that when at least two projectors are provided, an acquisition area is established on the reference point corresponding to each projection picture, the number of the positioning light spots 5 acquired by the two acquisition areas is at least two, each positioning light spot 5 is linked with one corresponding effective picture 1, and the positions of the at least two acquired positioning light spots 5 linked with different effective pictures 1 respectively are adjusted, so that the alignment of the effective pictures 1 is adjusted.
S23: acquiring a positioning light spot 5 and acquiring position information of the positioning light spot;
the position information includes the relative distance, relative angle, etc. of the positioning spot from the reference point. And moving the positioning light spot to the reference point based on the acquired position information so as to enable the positioning light spot to coincide with the reference point, realize the alignment of the fusion area and further complete the splicing of the adjacent effective pictures 1.
S24: adjusting the position information of the positioning light spot 5 to be matched with the position information of the reference point; each of the projection images moves with the positioning light spot 5, thereby adjusting the position of the effective image 1 to correct the effective fusion area 3.
When the position of the positioning light spot 5 moves, the projection picture and the effective picture 1 which are correspondingly linked move, and the position of the effective picture 1 is adjusted by aligning the position of the positioning light spot 5 and the position of the reference point, so that the two adjacent effective pictures 1 are mutually aligned, and the effective fusion area 3 is aligned, so that the adjacent projection pictures can display complete projection playing contents.
Meanwhile, the positioning light spot 5 is positioned on the dark-area picture 2 which does not display the projection playing content, so that the projection playing content can be displayed on the effective picture 1 without being influenced when the adjustment is carried out, namely, the alignment and the correction of the projection picture can still be carried out when the projector projects the projection playing content which needs to be played, and therefore, a viewer watching the playing content can obtain good impression experience.
In a specific implementation process, the reference point is in an invalid fusion area, and the acquisition area at least partially overlaps with the invalid fusion area of the corresponding projection picture. The reference points are marked based on the invalid fusion area, the positioning light spots are collected in the collection area established based on the reference points, and the collected positioning light spots are adjusted to be capable of linking the alignment of the valid fusion area more accurately.
In a specific implementation process, the effective picture 1 is projected on a projection carrier, a physical mark point is arranged outside the boundary of the projection carrier, and any point close to the physical mark point in the dark-area picture 2 of each projection picture is selected as a reference point in an aligned state of the effective fusion area 3. The physical mark point is an actual physical point on the projection carrier, and the reference point of each projection picture can be quickly set by positioning the reference point based on the physical mark point. In practical application, each projection picture can project a light spot in the state that the effective fusion areas 3 are aligned, the light spots are moved to be aligned with the corresponding physical mark points, the position of the light spots in the state is further acquired, the position of the light spots is used as the position of the reference point, the position of the reference point is fixed, and the light spots are not linked with the effective pictures 1.
Further, a light spot collecting device is installed on the outer side of the boundary of the projection carrier, the light spot collecting device is used as a physical mark point, and the light spot collecting device can be a camera device or a light sensor; the reference point is a coordinate or a coordinate area of the dark area picture 2 of each projection picture near the installation camera device or the light sensor under the condition that the effective fusion area 3 is aligned; the collecting area is a collecting range covered by the light spot collecting device.
In a more preferred embodiment, the reference point is a coordinate or a coordinate area of the dark area picture 2 of each projection picture on the CCD/CMOS where the image pickup device or the photo sensor is mounted in the aligned state of the effective fusion area 3.
The camera device can be a video camera and the like, and the light sensor can be a linear array light sensor or an area array light sensor and the like. The reference point is positioned near the light spot acquisition device, when the positioning light spot 5 is aligned to the corresponding reference point in the original state, the positioning light spot 5 can irradiate the acquisition range of the light spot acquisition device to form a bright point or a bright area, the coordinate or the coordinate area of the bright point or the bright area is defined as the positioning light spot 5, and after the positioning light spot 5 is displaced, if the positioning light spot 5 is not greatly displaced, the positioning light spot can be positioned in the acquisition range of the light spot acquisition device, and the positioning light spot 5 can be rapidly identified by scanning the positioning light spot 5 by using the light spot acquisition device. The position of the effective picture 1 can be adjusted by adjusting the position of the positioning light spot 5, so that the effective fusion area can be aligned.
The position of a light spot acquisition device such as a camera device or a light sensor does not deform along with the deformation of a projection picture, and the calibration with the light spot acquisition device as a reference point can enable the correction to have accuracy. And the acquisition area is the acquisition range covered by the facula acquisition device, so that the acquisition area of the datum point can be quickly established.
Further, the reference point is a central point of a light spot collecting range of the light spot collecting device, that is, a central point on a CCD/CMOS of the image pickup device or the light sensor. The central point of the acquisition range of the light spot acquisition device is directly used as a reference point for marking, and the position of the reference point can be positioned more quickly, so that the adjustment of the positioning light spot can be realized more quickly.
At step S22: the positioning light spot 5 is acquired in an acquisition area, and the method further comprises the following steps:
s20: and adjusting the projection pictures to preliminarily align the fusion images of the adjacent effective pictures 1 and enable the positioning light spots 5 to be positioned in an overlapping area.
The rough adjustment may be performed by a computer or may be performed manually by a debugging person. The projection picture after coarse adjustment is rectangular under the observation of human eyes, the edge of the effective picture 1 of the projection picture is not deviated too much, and the fusion area is initially aligned and is rectangular under the observation of human eyes. Coarse adjustment ensures that the positioning spot 5 is within the overlapping area, so that the positioning spot 5 can be swept when the step S22 is performed.
Example 3
As shown in fig. 4, this embodiment provides a system for correcting a fusion area of projection pictures, where the projection pictures are multiple, each projection picture includes an effective picture 1 and a dark picture 2 corresponding to the effective picture 1, the dark pictures 2 are located around the effective picture 1, adjacent projection pictures are fused to form a fusion area, adjacent effective pictures 1 form an effective fusion area 3, adjacent dark pictures 2 form an ineffective fusion area 4,
the correction system includes:
the datum mark module is used for marking a datum point corresponding to the dark area picture of each projection picture in an effective fusion area alignment state;
a positioning light spot 5 module, configured to display, on a dark-area picture 2 of each projection picture, a positioning light spot 5 aligned with a corresponding reference point of the projection picture in an original state, where the positioning light spot 5 is linked with an effective picture 1 of the projection picture corresponding to the positioning light spot 5; each projection picture has a respective corresponding reference point, and the reference point is a point marked by the effective fusion area 3 in an aligned state;
the positioning light spot 5 is used for adjusting the corresponding effective picture 1. It can be understood that the projection image and the corresponding positioning light spot 5 are projected by the same projector, and therefore, each positioning light spot 5 is linked with the effective image 1 of the projection image corresponding to the positioning light spot 5. Specifically, when the position of the positioning light spot 5 is adjusted, the position of the effective picture 1 linked with the positioning light spot also changes, and the reference point is marked by the dark-area picture 2 corresponding to each projection picture in the alignment state of the effective fusion area 3, so that the positioning light spot 5 aligned with the reference point in the original state can fall into the dark-area picture 2 of the projection picture, that is, the position of the effective picture 1 can be adjusted by adjusting the position of the positioning light spot 5 on the dark-area picture 2, and the correction of the projection picture is realized.
In the specific implementation process, the reference points can be marked in advance, when the effective fusion areas 3 of the projection pictures are aligned, one point corresponding to the dark area picture 2 of each projection picture is selected as the reference point in advance, the position information of the reference point is recorded after the reference point is selected, and the reference point is not linked with the effective picture 1; and simultaneously, when the effective fusion areas 3 of the projection pictures are aligned, displaying a positioning light spot 5 aligned with the corresponding reference point on the dark area picture 2 of each projection picture, wherein the positioning light spot 5 is in an original state. Because the positioning light spot 5 is positioned in the dark-area picture 2, the projector can align the projection pictures when projecting the contents to be played, the projector does not need to jump to a specific preset debugging mode to correct and align, the effective picture 1 can still display the projection playing contents in the correction process, the watching experience of audiences is not influenced, and the correction process is simplified.
Preferably, when the number of the projectors is two, at least one positioning light spot 5 is projected on the dark area picture 2 of one projection picture, that is, at least two positioning light spots 5 projected by different projectors are displayed, and the two positioning light spots 5 are respectively aligned to the corresponding reference points by adjusting the positions of the two positioning light spots 5, so that the two effective pictures 1 linked in alignment are aligned, splicing and fusion of adjacent projection pictures are realized, and the two projection pictures can jointly display complete and normal projection playing contents.
The closer the positioning light spot 5 and the effective picture 1 are, the more obvious the linkage relation is, and the more accurate the alignment of the effective fusion area 3 and the effective picture 1 is by adjusting the positioning light spot 5.
And the correction module is used for adjusting the positions of the positioning light spots 5 to the respective corresponding reference points after the positioning light spots 5 are displaced, so as to adjust the position of the linked effective picture 1 and correct the effective fusion area 3. In the projection use process, the linked positioning light spots 5 are displaced due to the deviation of the projection picture, and the linked effective picture 1 can be adjusted by adjusting the positions of the positioning light spots 5 when the positioning light spots 5 deviate from the original positions.
And determining a datum point in each projection picture, wherein the datum point is not deformed along with the deformation of the projection picture, and then the datum point can be used as a calibration point for correcting the projection picture, and represents the alignment state of the effective fusion area of the projection picture. A positioning light spot 5 is defined on a dark area picture 2 of a projection picture, the original state of the positioning light spot 5 is aligned to a corresponding reference point, and after the positioning light spot 5 is displaced, the effective fusion area can be adjusted to the most initial alignment state by adjusting the positioning light spot 5 to be aligned to the reference point, so that the fusion area alignment of the effective picture 1 is realized. The correction in this way does not affect the normal playing of the effective picture 1, and can realize the correction of the fusion area while not affecting the user to watch the effective picture 1.
Example 4
As shown in fig. 5 and fig. 6, this embodiment provides a projection system, which includes a plurality of projectors 6 and a projection carrier 7, where the plurality of projectors 6 are configured to project a plurality of projection pictures on the projection carrier 7, each projection picture includes an effective picture 1 and a dark-area picture 2 corresponding to the effective picture 1, the dark-area pictures 2 are located around the effective picture 1, adjacent projection pictures are fused to form a fusion area, adjacent effective pictures 1 form an effective fusion area 3, and adjacent dark-area pictures 2 form an ineffective fusion area 4;
the projection system further comprises a correction device 9, the correction device 9 is arranged on at least one side edge of the projection carrier 7, and the correction device 9 is used for executing the projection picture fusion area correction method described in the embodiment 1 to the embodiment 3.
Example 5
The present embodiment provides a computer-readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the projection picture fusion area correction method according to embodiments 1 to 3.
Example 6
The present embodiment provides a computer device, including a memory and a processor, where the memory stores a computer program, and the processor implements the projection picture fusion area correction method according to embodiments 1 to 3 when executing the computer program.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the claims of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A correction method for fusion area of projection pictures, wherein the number of the projection pictures is multiple, each projection picture comprises an effective picture and a dark area picture corresponding to the effective picture, the dark area pictures are positioned around the effective picture, the adjacent projection pictures are fused to form a fusion area, the adjacent effective pictures form an effective fusion area, and the adjacent dark area pictures form an ineffective fusion area,
the correction method comprises the following steps:
each projection picture is provided with a respective corresponding reference point, and the reference point is a point marked by a dark area picture corresponding to each projection picture in an effective fusion area alignment state; each projection picture displays a positioning light spot aligned to a corresponding projection picture reference point in an original state on a dark-area picture of the projection picture, and the positioning light spot is linked with an effective picture of the projection picture corresponding to the positioning light spot;
and after the positioning light spots are displaced, adjusting the positions of the positioning light spots to the respective corresponding reference points, thereby adjusting the positions of the linked effective pictures to correct the effective fusion area.
2. The method according to claim 1, wherein an acquisition region is established around a respective reference point of each projection image;
acquiring the positioning light spots in the acquisition area;
collecting positioning light spots and acquiring position information of the positioning light spots;
adjusting the position information of the positioning light spot to be matched with the position information of the reference point;
and each projection picture moves along with the positioning light spot, so that the position of the effective picture is adjusted to correct the effective fusion area.
3. The method as claimed in claim 2, wherein the reference point is located in an invalid fusion region, and the capture region at least partially overlaps with the invalid fusion region of the corresponding projection image.
4. The method according to any one of claims 1 to 3, wherein the effective frame is projected on a projection carrier, a physical mark point is provided outside a boundary of the projection carrier, and any point near the physical mark point in a dark frame of each of the projected frames is selected as a reference point in an aligned state of the effective frame.
5. The method according to any one of claims 2 to 3, wherein the effective image is projected on a projection carrier, and a light spot collecting device is installed outside the boundary of the projection carrier;
the reference point is a coordinate or a coordinate area of a dark area picture of each projection picture near the light spot acquisition device under the condition that the effective fusion area is aligned;
the collecting area is the collecting range of the light spot collecting device.
6. The method as claimed in claim 5, wherein the reference point is a central point of a collection range of the light spot collection device.
7. The method according to claim 3, wherein each of the projection images further comprises, before the acquiring the localization spots in the respective acquisition region:
and adjusting the projection pictures to preliminarily align the fusion images of the adjacent effective pictures and enable the positioning light spots to be positioned in an overlapping area.
8. A correction system for fusion area of projection pictures, wherein the number of the projection pictures is multiple, each projection picture comprises an effective picture and a dark area picture corresponding to the effective picture, the dark area pictures are positioned around the effective picture, adjacent projection pictures are fused to form a fusion area, the adjacent effective pictures form an effective fusion area, and the adjacent dark area pictures form an ineffective fusion area,
the correction system includes:
the datum mark module is used for marking a datum point corresponding to the dark area picture of each projection picture in an effective fusion area alignment state;
the positioning light spot module is used for displaying a positioning light spot which is aligned to a corresponding projection picture reference point in an original state on a dark-area picture of each projection picture, and the positioning light spot is linked with an effective picture of the corresponding projection picture;
and the correction module is used for adjusting the positions of the positioning light spots to the respective corresponding reference points after the positioning light spots are displaced, so as to adjust the position of the linked effective picture and correct the effective fusion area.
9. A projection system comprises a plurality of projectors and a projection carrier, wherein the projectors are used for projecting a plurality of projection pictures on the projection carrier, each projection picture comprises an effective picture and a dark area picture corresponding to the effective picture, the dark area pictures are positioned around the effective picture, adjacent projection pictures are fused to form a fusion area, adjacent effective pictures form an effective fusion area, and adjacent dark area pictures form an ineffective fusion area,
the projection system further comprises a correction device arranged on at least one side edge of the projection carrier, the correction device being configured to perform the projection picture fusion zone correction method according to any one of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the projection picture fusion area correction method according to any one of claims 1 to 7.
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