JP6776619B2 - Projection device, projection control method and program - Google Patents

Description

The present invention relates to a projection device, a projection control method, and a program suitable for a projector or the like that can be placed vertically or horizontally in a device housing.

We have proposed a projection-type image display device technology that can adjust the tilt of the housing in both the horizontal and vertical states and can simplify the configuration for adjusting the tilt of the housing. Has been done. (For example, Patent Document 1)

Japanese Unexamined Patent Publication No. 2012-13707

Many projection devices that support the use of the housing vertically / horizontally, including the technology described in the above patent documents, have a function of automatically correcting the vertical direction of the projected image. ..

By the way, in general, when the posture of the housing of the projection device is changed during the operation of projection, in addition to the vertical direction of the projected image, other projection environments, for example, an external device such as a personal computer for inputting an image signal, or , It is considered that the screen to be projected often changes at the same time.

When the projection environment other than the vertical direction of the projected image changes in this way, even if the device automatically corrects the vertical direction of the projected image itself, the user sets the other projection environment each time. I had to change it manually.

The present invention has been made in view of the above circumstances, and an object of the present invention is to continue the optimum projection operation in response to changes in the projection environment without the need for the user to perform complicated setting operations. It is an object of the present invention to provide a projection device, a projection control method and a program capable of the present invention.

One aspect of the present invention is the projection optical axis of the input unit for inputting an image signal, the projection unit for projecting an image corresponding to the image signal, and the projection unit in which the projection device is installed. When the posture detection unit that detects the posture and the posture detected by the posture detection unit are outside the predetermined range, the projection device is installed vertically, the projection range is vertically long, and there is one input image. , The above one input image corresponding to the image signal is arranged and projected only on the upper side of the projection range, and when there are two input images, the above two input images corresponding to the image signal are arranged above and below the projection range. It is characterized by including a projection control unit for projecting.

According to the present invention, it is possible to continue the optimum projection operation in response to changes in the projection environment without the need for the user to perform complicated setting operations.

The block diagram which shows the functional structure of the electronic circuit mainly of the projector apparatus which concerns on one Embodiment of this invention. The flowchart which shows the processing content of the projection operation according to the posture executed by the CPU in the 1st operation example which concerns on the same Embodiment. FIG. 6 is an external view illustrating changes in the posture and projection contents of the projector device in the first operation example according to the same embodiment. The flowchart which shows the processing content with respect to the posture change executed by the CPU in the 2nd operation example which concerns on the same Embodiment. FIG. 6 is an external view illustrating changes in the posture and projection contents of the projector device in the second operation example according to the same embodiment.

Hereinafter, an embodiment when the present invention is applied to a projector device will be described in detail with reference to the drawings.
[Constitution]
FIG. 1 is a block diagram showing mainly a functional configuration of an electronic circuit of a projector device (projection device) 10 according to the present embodiment. In the figure, the image data input to the input processing unit 21 is digitized as needed by the input processing unit 21 and then sent to the projection image driving unit 22 via the system bus SB. The projection system (projection unit) 22 to 27 includes a projection image drive unit 22, a micromirror element 23, a light source unit 24, a mirror 25, a projection lens unit 26, and a lens motor (M) 27.

The projected image driving unit 22 is obtained by multiplying a frame rate according to a predetermined format, for example, 120 [frames / second], the number of divisions of color components, and the number of display gradations according to the transmitted image data. The micromirror element 23, which is a display element, is displayed and driven by high-speed time division drive.

The micromirror element 23 displays by turning on / off each tilt angle of a plurality of micromirrors arranged in an array, for example, WXGA (width 1280 pixels × length 800 pixels) at high speed. , A light image is formed by the reflected light.

On the other hand, the primary color lights of R, G, and B are cyclically emitted from the light source unit 24 in a time-division manner. The light source unit 24 has an LED that is a semiconductor light emitting element, and repeatedly emits primary color light of R, G, and B in a time division manner. The LED included in the light source unit 24 may include an LD (semiconductor laser) or an organic EL element as an LED in a broad sense. The primary color light from the light source unit 24 is totally reflected by the mirror 25 and irradiated to the micromirror element 23.

Then, an optical image is formed by the reflected light from the micromirror element 23, and the formed optical image is projected to the outside via the projection lens unit 26 for display.

The projection lens unit 26 includes a focus lens for moving the focus position and a zoom lens for changing the zoom (projection) angle of view in the internal lens optical system, and each of these lenses is a lens motor (M). A position along the optical axis direction is selectively driven by 27 via a gear mechanism (not shown).

On the other hand, the present invention provides a photographing unit IM that captures the projection direction of the projection lens unit 26. This photographing unit IM has a photographing lens unit 28. The photographing lens unit 28 includes a focus lens for moving the focus position, and has a photographing angle of view that covers the projected angle of view emitted when the projection lens unit 26 is set to the widest angle. The external light image that enters the photographing lens unit 28 is imaged on the CMOS image sensor 29, which is a solid-state image sensor.

The image signal obtained by imaging with the CMOS image sensor 29 is digitized by the A / D converter 30 and then sent to the captured image processing unit 31.

The captured image processing unit 31 scans and drives the CMOS image sensor 29 to execute an imaging operation, and performs image processing such as histogram extraction for each primary color component on the image data obtained by imaging. In addition, the captured image processing unit 31 drives a lens motor (M) 32 for moving the focus lens position of the captured lens unit 28.

The CPU 33 controls all the operations of the above circuits. The CPU 33 is directly connected to the main memory 34 and the program memory 35. The main memory 34 is composed of, for example, SRAM and functions as a work memory of the CPU 33. The program memory 35 is composed of an electrically rewritable non-volatile memory, for example, a flash ROM, and stores an operation program executed by the CPU 33, various standard data, and the like.

The CPU 33 controls the projector device 10 in an integrated manner by reading an operation program, standard data, or the like stored in the program memory 35, expanding and storing the operation program in the main memory 34, and then executing the program. To do.

The CPU 33 executes various projection operations in response to an operation signal from the operation unit 36. The operation unit 36 includes an operation key provided in the main body housing of the projector device 10 or a light receiving unit that receives an infrared modulation signal from a remote controller dedicated to the projector device 10 (not shown), and receives and receives a key operation signal. A signal corresponding to the key operation signal is sent to the CPU 33.

The CPU 33 is further connected to the voice processing unit 37 and the 3-axis acceleration sensor 38 via the system bus SB.
The audio processing unit 37 includes a sound source circuit such as a PCM sound source, converts an audio signal given during a projection operation into analog, drives the speaker unit 39 to emit sound, or generates a beep sound or the like if necessary.

The 3-axis acceleration sensor (attitude detection unit) 38 detects acceleration in the 3-axis directions orthogonal to each other, and this projector device calculates the direction of gravitational acceleration from the detection output of the 3-axis acceleration sensor 38. It is possible to determine in what posture the 10 is performing the projection operation.

Specifically, the 3-axis acceleration sensor 38 detects the posture in which the projector device 10 is installed from the acceleration around the projected optical axis of the projection units 22 to 27 of the projector device 10. Further, using the attitude angle detected by the 3-axis acceleration sensor 38, it is possible to execute the keystone correction process when it is assumed that the screen surface to be projected is vertical or horizontal.

[First operation example]
Next, a first operation example of the above embodiment will be described.
Here, it is assumed that the input processing unit 21 can simultaneously input image signals from two systems of external devices. The image based on the input image signal is a horizontally long rectangle like a general image, and the image projected from the projection lens unit 26 when the projector device 10 is used horizontally as a standard usage is also in the projection range. Is a horizontally long rectangle.

Therefore, even if image signals are input to the projector device 10 from two external devices, when the projector device 10 is used horizontally, only one of the preset image signals is selected and the projection operation is executed. On the other hand, when the projector device 10 is used vertically, it is assumed that a projection operation using two image signals is executed.

FIG. 2 is a flowchart showing the processing contents of the projection operation according to the posture of the projector device 10 executed by the CPU 33. Here, a case where the projector device 10 is used either horizontally or vertically to perform a projection operation will be described.

The 3-axis acceleration sensor 38 detects the posture in which the projector device 10 is installed from the acceleration around the projected optical axis of the projection unit of the projector device 10. At the beginning of the process, the CPU 33 acquires the detection output from the 3-axis acceleration sensor 38 (step S101), and determines whether or not the projector device 10 is horizontally placed at that time from the acquired contents (step S102).

Here, when it is determined that the projector device 10 is placed horizontally (Yes in step S102), the CPU (projection control unit) 33 is input to the input processing unit 21 based on the settings at that time. After executing the projection operation using the image signal of (input 1) (step S103), the process returns to the process from step S101 again.

That is, when it is determined that the posture detected by the 3-axis acceleration sensor 38 is within a predetermined range, that is, the installation state of the so-called projector device 10 is horizontally placed, the CPU 33 projects the image corresponding to the image signal as it is (first). Project the image under the projection conditions). In this case, the projection range is a horizontally long shape.

In FIG. 3A, a first personal computer PC1 and a second personal computer PC2 are connected as two external devices to the projector device 10 installed on the desk D, and image signals are input from each. The state input to the processing unit 21 is shown.

At this time, since the projector device 10 is placed horizontally on the desk D as shown in the figure, the CPU 33 is set to select the input set at that time, for example, the image signal from the first personal computer PC1. If this is the case, the projected image PI1 based on the image signal output by the first personal computer PC1 is projected onto a screen or the like (not shown here).

Further, in step S102, when it is determined that the projector device 10 is not placed horizontally (No in step S102), it is determined that the projector device 10 is used vertically instead of horizontally, and the CPU 33 next At that time, it is determined whether or not two image signals are simultaneously input to the input processing unit 21 (step S104).

Here, when it is determined whether or not the two image signals are input at the same time (Yes in step S104), the CPU 33 arranges the two images based on the two image signals vertically in a vertically long rectangular projection range. After executing the projection operation (step S105), the process returns to the process from step S101.

In FIG. 3 (B), the projector device 10 installed on the desk D is caused to rotate 90 ° from the state of FIG. 3 (A) as shown by the arrow A1, and is placed vertically. It shows a state in which a first personal computer PC1 and a second personal computer PC2 are connected as external devices, and image signals are input to the input processing unit 21 from each of them.

At this time, since the projector device 10 is vertically installed, the CPU 33 simultaneously obtains the projected image PI1 and the projected image PI2 based on the image signals from both the first personal computer PC1 and the second personal computer PC2. Projection is performed on a screen or the like (not shown here). In this case, the projection range has a vertically long shape.

Further, in step S104, when it is determined that the image signals of the two systems are not simultaneously input to the input processing unit 21 at that time (No in step S104), the CPU 33 is the image of the system that is input at that time. After executing the projection operation using the signal (image signal of input 1) (projecting by setting the image of input 1 so as to be arranged on the upper side of the projection range according to the width) (step S106), the above again. The process returns from step S101.

That is, when the CPU 33 determines that the posture detected by the 3-axis acceleration sensor 38 is out of the predetermined range, that is, it is vertically placed, the CPU 33 projects the image corresponding to the image signal as it is (projects the image under the first projection condition). ), But the image is projected under the second projection condition different from the first projection condition.

Specifically, when it is determined that the projector device 10 is installed vertically and two image signals are input, the two input images (inputs 1 and 2) are set in the vertically long rectangular projection range. Arrange vertically and project. When there is only one input system, the input image (image of input 1) is adjusted to the width of the projection range and is arranged above the projection range for projection.

In this way, with two image signals being input to the projector device 10, the projection range from the projector device 10 can be increased by simply replacing the housing of the projector device 10 from horizontal to vertical. Along with the vertically long rectangle, horizontally long images corresponding to the two image signals are arranged vertically and projected at the same time, and the area of the projection range can be reduced without the need for complicated switching operations. It can be effectively used to project two images at the same time.

Further, when the housing of the projector device 10 is replaced from horizontal to vertical in a state where one system of image signals is input to the projector device 10, the projection range from the projector device 10 is a vertically long rectangular shape. Therefore, since the horizontally long image corresponding to one image signal is arranged above the projection range and projected, the projected image PI1 is not hidden by the shadow of the projector device 10 and the viewer. Can visually recognize the entire projected image PI1.

In the first operation example, when one system of image signals is input to the projector device 10 and the installation state changes from horizontal to vertical, the input image is made into a horizontally long rectangular shape. It was decided to change the projection range from the projection range to the projection range above the vertically long rectangle, but the same is true in the opposite case.

That is, when one system of image signals is input to the projector device 10, when the installation state changes from vertical installation to horizontal installation, the input image is a horizontally long rectangle from the projection range above the vertically long rectangle. It is projected by changing to the projection range of.

Further, in the first operation example, the case where the installation state of the housing of the projector device 10 in the state where two image signals are input to the projector device 10 is changed from the horizontal installation to the vertical installation is described. However, it is also possible that three or more image signals are input to the projector device 10.

For example, when it is determined that there are three image inputs, the images of inputs 1, 2, and 3 are set and projected so as to be arranged at three locations, the upper side, the vicinity of the center, and the lower side of the vertically long rectangle. ..

[Second operation example]
Next, a second operation example of the above embodiment will be described.
Here, it is assumed that the projector device 10 is installed, for example, on the ceiling of a conference room or the like by a mounting bracket dedicated to the projector device 10, which is generally called a “ceiling bracket”. With this ceiling mount, for example, by emitting image light slightly downward from the horizontal direction at a depression angle set arbitrarily, it is possible to project an image on a surface such as a whiteboard installed in front of the conference room. On the other hand, a mechanical switching mechanism using a metal spring and a shock absorber using a hydraulic damper shall be provided so that an image can be projected vertically downward onto a desk or the like.

FIG. 4 is a flowchart showing the processing contents of the projection operation according to the posture of the projector device 10 executed by the CPU 33. Here, a case will be described in which the projection operation is performed by using the projector device 10 so that the projected optical axis is in either a substantially horizontal direction or a vertically downward direction.

At the beginning of processing, the CPU 33 determines the projection mode set at that time, specifically, the input terminal system, the video signal format, the brightness, the gamma correction value for gradation control for each primary color component, and the trapezoidal correction. An image is projected according to the image signal input to the input processing unit 21 based on the presence / absence, the presence / absence of OSD (superimposed image), and the like (step S201).

At the same time, the CPU 33 acquires the detection output from the 3-axis acceleration sensor 38 (step S202), and compares the acquired content with the content acquired in the same step immediately before, so that the projection direction of the projector device 10 has changed. It is determined whether or not (step S203).

If it is determined that there is no change in the projection direction of the projector device 10 (No in step S203), the CPU 33 returns to the process from step S201.

By repeatedly executing the processes of steps S201 to S203 in this way, the mode setting state up to that point is maintained and the projection operation is continued, while waiting for a change in the projection direction.

In FIG. 5A, image light is emitted from the projector device 10 along a direction set downward with a slight depression angle from the horizontal direction, and the projected image PI1 is projected using a whiteboard or the like (not shown) as a screen. Indicates the state of being.

For example, in image projection using a whiteboard as a screen, there is little possibility that the color components of the projected image will be affected by the color of the screen surface and deteriorate in terms of color reproducibility, so the image input to the input processing unit 21. Projection can be executed assuming that it is not necessary to perform color correction or the like on the signal and the gamma correction value for gradation control for each primary color component is not corrected.

In step S203 shown in FIG. 4, when it is determined that the projection direction of the projector device 10 is different from the previous time and there is a change (Yes in step S203), the CPU 33 is the data of the test chart image stored in advance in the program memory 35. Is read, and a test chart image is temporarily projected instead of projecting the image according to the image signal from the input processing unit 21 until then (step S204). At this time, the CPU 33 drives the focus lens by the projection lens unit 26 by the lens motor 27, and tests a plurality of focusing distances, for example, five focusing distances from a preset shortest projection distance to the longest projection distance. Project the chart image.

At the same time, the CPU 33 captures the projected image by using the contrast-type autofocus function in the photographing unit IM (step S205).

At this time, the CPU 33 acquires the position of the focus lens by the lens motor 32 at the time when the contrast value is the highest for each of the focusing distances, and is further the highest contrast value among the highest contrast values for each of the focusing distances. The distance from the position of the focus lens at the time when is high to the new projection target is acquired (step S206).

The CPU 33, which has obtained the distance to the new projection target, uses the histograms of the primary color components R, G, and B of the image taken at the focusing distance at the time when the contrast value is highest as described above to be obtained from the base test chart image itself. Gamma correction of each RGB color of the projected image so that the amount of color components of the surface to be projected is obtained by comparing with the histograms of the primary color components R, G, and B, and then reduced by the amount of each income component. Set the value (step S207).

Based on the set gamma correction value of each color, the projection operation of the image input to the input processing unit 21 is started (step S208), and the process returns to the process from step S201 again.

5 (B) shows the projected image PI1 from the projector device 10 along the vertical direction by operating the ceiling mount bracket (not shown) on which the projector device 10 is installed from the state of FIG. 5 (A). The state of being projected onto the desk D below is illustrated. As shown by hatching on the desk D in the figure, even if the board surface of the desk D has some color component other than the white background, for example, the background color is canceled by the above processing. Since the image projection is restarted by setting the gamma correction value, it is possible to continue the projection operation with a natural color without making the person viewing the projected image PI1 feel uncomfortable.

In this way, even when the orientation of the housing of the projector device 10 is changed with respect to the projector device 10, and the environment such as the distance to the surface to be projected and the color of the surface is changed, it feels extremely natural and uncomfortable. The projection operation can be continued without any problem.

As described above, in the projector device 10 capable of vertical projection and horizontal projection, the projection conditions (projection mode, input) are set according to the orientation of the projector device 10 in the projection direction (vertical or horizontal, etc.). It can be switched automatically.

Therefore, when the posture detected by the posture detection unit is within the predetermined range, the image corresponding to the image signal input by the input unit is projected as it is, and the posture installed by the posture detection unit is outside the predetermined range. , The image signal input by the input unit and the projection control unit that changes one of the image quality of the image projected by the projection unit may be provided.

As an example of the projection conditions, when the projector device 10 is placed horizontally for wall projection, the projection mode is the brightness-oriented mode, the input is a TV image, and the projector device 10 is placed vertically for ceiling projection. Since it is highly likely that you will lie down and watch while lying down, you do not need much brightness, so the projection mode is theater mode (focusing on brightness) and the input can be a video image.

Further, when the projector device 10 is placed horizontally and projected on the wall surface, an image of the water tank can be projected, and when the projector device 10 is placed vertically and projected on the ceiling, indirect lighting can be projected.

As described in detail above, according to the present embodiment, it is possible to continue the optimum projection operation in response to changes in the projection environment without the need for the user to perform complicated setting operations.

Further, in the first operation example, the case where the image signal input to the input processing unit 21 is switched according to the vertical installation / horizontal installation to control the projection content has been described, but the switching content is previously set in the projector device. By setting in association with the posture of 10, the number of images to be projected, the brightness or the priority of the color of the projected image, etc. are automatically switched according to the posture of the projector device 10. The burden on the user can be reduced.

Further, in the second operation example, the projection target surface of the projector device 10 after the posture change is imaged, the distance to the surface and the color component are acquired, and the projection image after the posture change is reflected. , The same image quality can be maintained even if the projection target changes.

In the above embodiment, the present invention has been described as a DLP (registered trademark) (Digital Light Processing) type projector, but the present invention does not limit the projection method and the like, and a high-pressure mercury lamp is used as a light source. It can be similarly applied to both transmissive type and reflective type liquid crystal projectors in which a color liquid crystal panel is used as a display element for forming an optical image.

In addition, the present invention is not limited to the above-described embodiment, and can be variously modified at the implementation stage without departing from the gist thereof. In addition, the functions executed in the above-described embodiment may be combined as appropriate as possible. The above-described embodiments include various steps, and various inventions can be extracted by an appropriate combination according to a plurality of disclosed constitutional requirements. For example, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, if the effect is obtained, the configuration in which the constituent requirements are deleted can be extracted as an invention.

Hereinafter, the inventions described in the claims of the original application of the present application will be added.
[Claim 1]
In the projection device
Input section for inputting image signals and
A projection unit that projects an image according to the above image signal,
An attitude detection unit that detects the attitude around the projected optical axis of the projection unit on which the projection device is installed,
When the posture detected by the posture detection unit is within the predetermined range, the image is projected under the first projection condition, and when the posture detected by the posture detection unit is outside the predetermined range, the first projection is performed. A projection control unit that projects an image under a second projection condition that is different from the conditions,
A projection device characterized by comprising.
[Claim 2]
When the posture is within a predetermined range, the projection device is installed horizontally and the projection range is horizontally long.
When the posture is outside the predetermined range, the projection device is installed vertically and the projection range is vertically long.
The projection device according to claim 1, wherein the projection device is characterized in that.
[Claim 3]
When projecting an image under the first projection condition, the input image corresponding to the image signal is projected as it is.
When projecting an image under the second projection condition, one of the input images corresponding to the image signal is placed above the projection range and projected.
2. The projection device according to claim 2.
[Claim 4]
The projection device according to claim 3, wherein when the images are projected under the second projection condition and there are two input images, the two input images are arranged and projected above and below the projection range.
[Claim 5]
When a change in posture installed by the posture detection unit is detected, a mode selection unit that selects a new mode setting for either the image signal input by the input unit or the image quality of the image projected by the projection unit is further added. Prepare,
The projection control unit executes mode setting for the image projected by the projection unit based on the mode setting selected by the mode selection unit.
The projection device according to any one of claims 1 to 4, wherein the projection device is characterized in that.

[Claim 6]
The projection according to claim 5, wherein the mode setting newly selected by the mode selection unit includes the number of images projected by the projection unit and the brightness or color priority of the projected image. apparatus.
[Claim 7]
The projection unit further includes an acquisition unit that acquires information about the surface on which the image is projected.
The projection control unit executes mode setting for the image projected by the projection unit based on the information about the surface to which the image acquired by the acquisition unit is projected.
The projection device according to any one of claims 1 to 6, wherein the projection device is characterized in that.
[Claim 8]
It is a projection control method in a projection device including an input unit for inputting an image signal and a projection unit for projecting an image corresponding to the image signal.
A posture detection step of detecting the posture around the projected optical axis of the projection unit in which the projection device is installed, and
When the posture detected in the posture detection step is within a predetermined range, an image is projected under the first projection condition, and when the posture detected in the posture detection step is outside the predetermined range, the first projection is performed. A projection control process that projects an image under a second projection condition that is different from the conditions,
A projection control method characterized by having.
[Claim 9]
A program executed by a computer built in a projection device including an input unit for inputting an image signal and a projection unit for projecting an image corresponding to the image signal.
An attitude detection unit that detects the attitude around the projected optical axis of the projection unit on which the projection device is installed, and an attitude detection unit.
When the posture detected by the posture detection unit is within the predetermined range, the image is projected under the first projection condition, and when the posture detected by the posture detection unit is outside the predetermined range, the first projection is performed. A projection control unit that projects an image under a second projection condition that is different from the condition,
A program characterized by functioning as.

10 ... Projector device (projection device),
21 ... Input processing unit (input unit),
22 ... Projection image drive unit,
23 ... Micro mirror element,
24 ... Light source unit,
25 ... Mirror,
26 ... Projection lens section,
27 ... Lens motor (M),
28 ... Shooting lens part,
29 ... CMOS image sensor,
30 ... A / D converter,
31 ... Photographed image processing unit,
32 ... Lens motor (M),
33 ... CPU (mode selection unit, projection control unit),
34 ... Main memory,
35 ... Program memory,
36 ... Operation unit,
37 ... Voice processing unit,
38 ... 3-axis acceleration sensor (posture detection unit),
39 ... Speaker section,
D ... desk,
IM ... Shooting department,
PC1, PC2 ... Personal computer,
PI1, PI2 ... Projected image,
SB ... System bus.

Claims (6)

In the projection device
Input section for inputting image signals and
A projection unit that projects an image according to the above image signal,
An attitude detection unit that detects the attitude around the projected optical axis of the projection unit on which the projection device is installed,
When the posture detected by the posture detection unit is within a predetermined range, the projection device is installed horizontally, the projection range is horizontally long, and there are two input images, the two inputs according to the image signal. When one of the images is projected, the posture detected by the posture detection unit is out of the predetermined range, the projection device is installed vertically, the projection range is vertically long, and there is one input image. , The above one input image corresponding to the image signal is arranged and projected only on the upper side of the projection range, and when there are two input images, the above two input images corresponding to the image signal are arranged above and below the projection range. The projection control unit to project and
A projection device characterized by comprising. When a change in posture installed by the posture detection unit is detected, a mode selection unit that selects a new mode setting for either the image signal input by the input unit or the image quality of the image projected by the projection unit is further added. Prepare,
The projection device according to claim 1, wherein the projection control unit executes a mode setting for an image projected by the projection unit based on the mode setting selected by the mode selection unit. The projection according to claim 2, wherein the mode setting newly selected by the mode selection unit includes the number of images projected by the projection unit and the brightness or color priority of the projected image. apparatus. The projection unit further includes an acquisition unit that acquires information about the surface on which the image is projected.
The first to third aspects of the invention, wherein the projection control unit executes mode setting for the image projected by the projection unit based on the information about the surface to which the image acquired by the acquisition unit is projected. The projection device according to any one. It is a projection control method in a projection device including an input unit for inputting an image signal and a projection unit for projecting an image corresponding to the image signal.
A posture detection step of detecting the posture around the projected optical axis of the projection unit in which the projection device is installed, and
When the posture detected in the posture detection step is within a predetermined range, the projection device is installed horizontally, the projection range is horizontally long, and there are two input images, the above two inputs according to the image signal. When one of the images is projected, the posture detected in the posture detection step is out of the predetermined range, the projection device is installed vertically, the projection range is vertically long, and there is one input image. , The above one input image corresponding to the image signal is arranged and projected only on the upper side of the projection range, and when there are two input images, the above two input images corresponding to the image signal are arranged above and below the projection range. The projection control process to project and
A projection control method characterized by having. A program executed by a computer built in a projection device including an input unit for inputting an image signal and a projection unit for projecting an image corresponding to the image signal.
The posture detection unit that detects the posture around the projection optical axis of the projection unit on which the projection device is installed and the posture detected by the posture detection unit are within a predetermined range, and the installation state of the projection device is horizontal. When the projection range is horizontally long and there are two input images, one of the above two input images corresponding to the image signal is projected, and the posture detected by the posture detection unit is out of the predetermined range. When the projection device is installed vertically, the projection range is vertically long, and there is one input image, the one input image corresponding to the image signal is arranged and projected only on the upper side of the projection range. When there are two input images, the projection control unit that arranges and projects the above two input images according to the image signal above and below the projection range.
A program characterized by functioning as.