TWI492627B - A projection system and a method by photographic positioning - Google Patents

Description

Projection system and method for photographic positioning

The present invention relates to a projection system and method, and more particularly to a projection system and method for photographic positioning using a photographic device for positioning a projector and integrating two or more projectors.

In recent years, due to the booming development of projector manufacturing technology and the continuous evolution of projector technology, it has reached a certain level in terms of resolution or color saturation. In addition, the popularity of projection equipment has made the application of projectors begin. From the original commercial exhibition halls, large briefing rooms, etc., to general classrooms and even home theaters, today's projectors can not only be used for most of flat panel displays, but also create additional vision through appropriate image processing. Effects, such as 3D projection of a movie theater, a projection of a circular field image, a projection show, projection construction of Virtual Reality and Augmented Reality, and the like.

However, in order to enhance the visual shock, the effect of a single projector has gradually failed to meet the visual needs of modern people, so there is a design that uses a multi-projector system to present a larger and more realistic picture, but the multi-projector is not erected. Still have the following disadvantages:

(1) Each projector must manually adjust the position and set the screen size when projecting, so that the screen size ratio can be adjusted, but in order to move the projection screen, all projectors must be moved at the same time. And the manual position adjustment must be done again, which is quite time consuming and inconvenient to use.

(2) The projected image must be arranged just before the projection, so that the joint can be perfectly connected. If there is a slight error, it will cause a gap at the joint (ie, not completely connected) or cause the image to overlap and make the overlap. Produce a situation that is too bright.

In view of this, the inventors of this case have accumulated a lot of experience based on years of research, and with their own creativity and constant attempts, developed a projection based on photography that can effectively improve the defects mentioned in the above-mentioned prior art. System and method.

The first object of the present invention is to provide a projection system and method for photographic positioning, which only needs to use one photographic device and at least two projection devices, that is, an electronic operation device can perform coordinate positioning and automatically adjust projection of the projected image. The range eliminates the need to manually adjust the position of the projection device and spend a lot of time adjusting the screen in the prior art.

The second object of the present invention is to provide a projection system and method for photographic positioning, which can automatically perform fusion and splicing when two or more direct projection screens are superimposed, and can quickly adjust the brightness and perform color correction.

The photographic positioning projection system comprises: an electronic operating device having a program; a first display card and a second display card are electrically connected to the electronic operating device; a first projection device and a second The projection device is electrically connected to the first display card and the second display card respectively; and a photographing device is electrically connected to the electronic operation device, and the photographing range thereof covers the projection range of the projection device.

The steps of the projection method for photographic positioning include:

S1. Correspondingly electrically connecting an electronic operating device, a first display card, a second display card, a first projection device, a second projection device and a camera device.

S2. Turning on the photographing device, the first projecting device and the second projecting device, and projecting a projection range of the first projecting device and the second projecting device within a photographing range of the photographing device, and the first projecting device and the second The projection range of the projection device needs to overlap.

S3. Perform coordinate positioning correction on the first projection device by projecting a corrected square matrix by using the first projection device, and the corrected square matrix is captured within the photographing range of the photographing device, and then by One of the electronic operating devices is programmed to synchronously convert the coordinates of the first projection device and the imaging device.

S4. performing coordinate positioning correction on the second projection device in the same manner as step S3, and projecting a correction square matrix by using the second projection device, and in the imaging range of the imaging device, at this time, by the electronic operation device The program performs processing to synchronously convert the coordinates of the first projection device and the photographing device.

S5. The user operates by using the program of the electronic operating device, and four points are clicked on the screen to determine the projection range of the first projection device and the second projection device after the coordinate conversion, and the projection can be performed.

S6. The overlapped part of the projected image is then subjected to brightness adjustment and color correction by the program.

In order to more clearly describe a projection system and method for photographic positioning proposed by the present invention, a preferred embodiment of the present invention will be described in detail below with reference to the drawings.

First of all, the structure of the present invention is clearly described. Therefore, please refer to the first figure and the second figure. The schematic diagram of the module of the projection system for photographing and the operation of the photographing apparatus of the present invention includes: an electronic The operating device 1 has a program 11 which has the function of performing coordinate conversion, and can further perform color correction and brightness adjustment of the projected picture, wherein the electronic operating device 1 is a computer; a first display card 21 and a second display card 22 are electrically connected to the electronic operating device 1; a first projection device 31 and a second projection device 32 are electrically connected to the first display card 21 and the second display respectively. The card 22; and a photographing device 4 are electrically connected to the electronic operating device 1, and the photographing range thereof covers the projection range of the projection device (as shown in the second figure), and is processed by the program 11 of the electronic operating device 1. The photographic range and the projection range can be coordinate-converted for positioning. The present invention can be used not only as two preferred projection devices but also as more than three projection devices. One or more of the projected image stitching.

The above has already made a fairly complete disclosure of the structure of the present invention. Next, a description will be made of a projection method for photographic positioning according to the present invention. Please refer to the third, fourth, and fourth B drawings, which are the present invention. The schematic diagram of the steps of the projection method of the photographic positioning, the correction diagram of the first projection device and the calibration diagram of the second projection device, as shown in the third figure, the steps of the present invention include:

S1. Electrically connecting an electronic operating device 1, a first display card 21, a second display card 22, a first projection device 31, a second projection device 32, and a camera device 4;

S2. Turning on the photographing device 4, the first projection device 31 and the second projection device 32, and projecting the projection range of the first projection device 31 and the second projection device 32 within the photographing range of the photographing device 4 (eg, 2)), and the projection ranges of the first projection device 31 and the second projection device 32 need to overlap;

S3. Perform coordinate positioning correction on the first projection device 31 by projecting a correction square array 311 (as shown in FIG. 4A) by using the first projection device 31. The corrected square matrix 311 is a black and white phase. The asymmetric squares 311 are projected into the photographing range of the photographing device 4, and then processed by the program 11 of the electronic operating device 1 to move the first projection device 31. Synchronous conversion of coordinates of the photographing device 4;

S4. Perform coordinate positioning correction on the second projection device 32 in the same manner as step S3. As shown in FIG. 4B, the second projection device 32 also projects a correction square array 321 in the photography device 4. In the range, at this time, the program 11 of the electronic operating device 1 is also processed to synchronously convert the second projection device 32 and the photographing device 4 into coordinates;

S5. The user continues to operate on the program 11 of the electronic operating device 1, since the coordinate systems of the first projection device 31, the second projection device 32, and the photographing device 4 are simultaneously convertible, at this time, the user directly on the screen Four points are clicked to determine the projection range of the first projection device 31 and the second projection device 32, so that projection can be performed. Further, when the first projection device 31 and the second projection device 32 are corrected, the program 11 is in the projection range. The overlapping portion takes an intermediate point, and the ratio of the projected image is captured from the left and right sides of the intermediate point image, thereby respectively determining the ratio of the image mosaic from the first projection device 31 and the second projection device 32;

S6. The portion of the image after the projection is overlapped by the program 11 for brightness adjustment and color correction.

As described above, if the first projection device 31 is moved, it is only necessary to repeat step S3. If the second projection device 32 is moved, only step S4 needs to be repeated. If the photographing device 4 is moved, it must be repeated. Step S3, step S4, and step S5 are sufficient.

In the present invention, two projection devices are used as preferred embodiments. In addition, the present invention can achieve the above effects by more than two projection devices.

In view of the above, the structure and operation method of the present invention have been clearly disclosed, and thus, it can be known that the present invention has the following advantages:

1. Using the photographic device to perform coordinate positioning, that is, using the electronic operating device to synchronously convert the coordinate systems of the first projection device, the second projection device, and the photographic device, if it is necessary to move the first projection device or the second projection device It is only necessary to use the electronically operated device to locate the image captured by the photographic device, and no additional adjustment of the position or height of the projection device is required, which greatly reduces the erection device and the adjustment screen for the user. Inconvenience.

2. The images projected by the projection device can be overlapped, and the color correction and brightness adjustment can be performed by the electronic operation device so that the overlapping portions are not too bright or too dark. Compared with the prior art, it is necessary to manually make the screen joints. The adjustment of the position makes the present invention a better convenience.

3. The present invention can be used when two or more projectors are projected.

However, the detailed description of the present invention is intended to be illustrative of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention. The patent scope of this case.

1. . . Electronic operating device

11. . . Program

twenty one. . . First display card

twenty two. . . Second display card

31. . . First projection device

32. . . Second projection device

311, 321. . . Corrected square matrix

4. . . Photography device

The first figure is a schematic diagram of a module of a projection system and method for photographing positioning according to the present invention;

2 is a schematic diagram of the operation of a photographing device of a projection system and method for photographing positioning according to the present invention;

The third figure is a schematic diagram of the steps of a projection system and method for photographic positioning according to the present invention;

4A is a schematic diagram of correction of a first projection device of a projection positioning system and method of the present invention; and

The fourth B is a schematic diagram of the second projection device of the projection system and method of the present invention.

1. . . Electronic operating device

11. . . Program

twenty one. . . First display card

twenty two. . . Second display card

31. . . First projection device

32. . . Second projection device

4. . . Photography equipment

Claims (2)

A projection method for photographic positioning, the steps comprising: S1. electrically connecting an electronic operating device, at least two display cards, at least two projection devices, and a photographic device, S2. turning on the photographic device and the At least two projection devices, and projecting the projection range of the projection device within the photographing range of the photographing device, and at least two projection units have overlapping projection ranges, S3. performing coordinate positioning correction on a first projection device by utilizing The first projection device projects a corrected square matrix, wherein the corrected square matrix is in the shooting range of the photographing device, and at this time, the first projection device is processed by one of the electronic operating devices. Synchronous conversion of coordinates of the photographing device; S4. Perform coordinate positioning correction on a second projection device in the same manner as S3, and use the second projection device to project a corrected square matrix, because the corrected square matrix is being In the photographic range of the photographic device, at this time, the program of the electronic operating device is processed to synchronize the coordinates of the second projection device and the photographic device. ;. S5 After completion of the coordinate transformation means positioned in the first projection and the second projection device, the user can operate the program from the electronic control device, the four points in a point on the screen to determine a first projection means And the projection range of the second projection device is used for projection; and S6. the portion of the image after the projection is overlapped by the program for brightness adjustment and color correction; wherein the first projection device is corrected by the program In the case of the second projection device, an intermediate point is taken in the overlapping portion of the projection range, and the ratio of the projection of the image from the first projection device to the second projection device is determined by the ratio of the projection of the image from the left and right of the intermediate point image. ; A projection method for photographing positioning according to claim 1, wherein the corrected square matrix is an asymmetric black and white chess box.