JP4259205B2 - Projection apparatus, projection apparatus recording method, and program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a projection apparatus particularly suitable for a projector used in a presentation, a recording method for the projection apparatus, and a program.
[0002]
[Prior art]
A camera device is incorporated in a projector device that performs projection display based on an input image signal, and a still image of the projected and displayed image can be obtained by shooting a subject such as a presentation material while switching the shooting direction. Something that can be taken is also considered. (For example, refer to Patent Document 1.)
[0003]
[Patent Document 1]
JP 2001-285691 A
[0004]
[Problems to be solved by the invention]
The above-mentioned patent document 1 is a camera device for photographing and projecting and displaying a subject so that it can be used for obtaining a projected and displayed still image. The purpose of this is to adjust accurately.
[0005]
Therefore, it is not considered at all that the projected image is displayed and the subject to be photographed is a still image and that a range other than the still image range is photographed.
[0006]
By the way, as a major application of a projector apparatus, it is generally performed by connecting a personal computer or the like on which presentation software is installed.
[0007]
In this type of presentation, the presenter's expressive power greatly affects the appeal of cases and products provided in the presentation, so the skill of the presenter is inevitably questioned.
[0008]
However, the projector device of Patent Document 1 only shoots a projected still image corresponding to the range position, and shoots an image for presentation including a presenter that uses a moving image or the like. Is not considered.
[0009]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a projection apparatus, a recording method for the projection apparatus, and a program that are suitable for learning presentation technology.
[0010]
[Means for Solving the Problems]
According to the first aspect of the present invention, a projection unit that forms and displays a light image based on an input image signal, and a photographing field angle that is opposed to the projection direction of the projection unit and is wider than the projection field angle of the projection unit. Including an image pickup means having a variable function of a shooting angle of view, and a recording means for recording an image signal obtained by the image pickup means And designation means for designating a predetermined mode, and photography control means for setting a photographing field angle of the imaging means wider than a projection field angle of the projection means based on designation by the designation means. It is characterized by having.
[0011]
With such a configuration, not only the projection image used in the presentation but also at least a part of the presenter performing the presentation can be photographed in one image. Contribute to learning.
[0013]
Also, Since it is possible to immediately shift to the state where the presentation practice scene is recorded by specifying a simple mode, it is possible to practice the presentation more easily.
[0014]
Claim 2 The invention described is the above Claim 1 In the described invention, the imaging means has an automatic focusing function for selecting one from a plurality of positions in the captured image and automatically focusing, and the imaging control means is based on designation by the designation means. The automatic focusing position by the imaging unit corresponding to the projection direction of the projection unit is designated.
[0015]
With such a configuration, the above Claim 1 In addition to the operation of the described invention, an image that is automatically focused at a position corresponding to the projected image can be taken, so that an image that is more suitable as a practice scene for a presentation can be taken.
[0016]
Claim 3 The invention described is the above Claim 2 In the described invention, it is further characterized by further comprising selection means for arbitrarily selecting an automatic focusing position by the imaging means designated by the imaging control means.
[0017]
With this configuration, Claim 2 In addition to the operation of the described invention, the practice effect can be confirmed more easily by capturing an image as intended by the presenter, for example, by automatically focusing one of the projected image and the presenter.
[0018]
Claim 4 The invention described in the invention described in claim 1 is characterized in that the imaging means captures a moving image in frame synchronization with the projection timing of the projection means.
[0019]
With such a configuration, in addition to the operation of the first aspect of the present invention, flickering of the projected image can be eliminated, and the content of the projected image can be visually confirmed more reliably.
[0020]
Claim 5 According to the invention described in the first aspect, the recording unit outputs the image signal obtained by the photographing unit to an externally connected device to be recorded.
[0021]
With such a configuration, in addition to the operation of the invention described in claim 1 above, by connecting an external device having an excellent recording medium capacity and the like, the projected content can be projected over a long period of time without worrying about the free capacity. Can be recorded.
[0022]
Claim 6 The invention described is a projection process for forming and projecting a light image based on an input image signal, and a photographic image including a photographic field angle that is opposite to the projection direction in the projection process and that is wider than the projection field angle. Based on an imaging process for imaging with an imaging unit having a variable angle function, a recording process for recording an image signal obtained in this imaging process, a designation process for designating a predetermined mode, and designation in this designation process And a shooting control step of setting a shooting angle of view of the imaging unit wider than a projection angle of view in the projection step.
[0023]
With such a method, not only the projection image used in the presentation but also at least a part of the presenter who makes the presentation can be photographed in one image. Contribute to learning.
[0024]
Claim 7 The invention described is a projection step of forming and projecting a light image based on an input image signal, and a photographic image that includes a photographic field angle that is opposite to the projection direction in the projection step and that is wider than the projection field angle. Based on the shooting step of shooting with an imaging unit having a variable angle function, the recording step of recording the image signal obtained in this shooting step, the specifying step of specifying a predetermined mode, and the specification in this specifying step And causing the computer to execute an imaging control step of setting the imaging angle of view of the imaging unit wider than the projection angle of view in the projection step.
[0025]
With such program content, not only the projection images used in the presentation but also at least a part of the presenter who makes the presentation can be photographed in one image. Can contribute to the acquisition of
[0026]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment in which the present invention is applied to a projector apparatus will be described with reference to the drawings.
[0027]
FIG. 1 shows an external configuration of a projector apparatus 10 according to the embodiment. As shown in FIG. 2A, a projection lens 12, a photographing lens 13, a microphone 14, and an Ir receiver 15 are disposed on the front surface of a rectangular parallelepiped main body casing 11.
[0028]
The projection lens 12 is for projecting a light image formed by a spatial light modulation element such as a micromirror element to be described later. Here, the focus position and the zoom position (projection angle of view) can be arbitrarily changed. Shall.
[0029]
The photographing lens 13 is an optical lens system that has a photographing field angle wider than the maximum projection field angle of the projection lens 12 and is also capable of autofocusing and zooming. Then, an optical image including the projection image of the projection lens 12 is formed.
[0030]
The microphone 14 collects sound in the direction of the projection lens 12 during moving image shooting.
[0031]
The Ir receiver 15 receives infrared light (Ir) on which a key operation signal from a remote controller to be described later is superimposed.
[0032]
A zoom ring 16 and a focus ring 17, both of which are dial rings, a main body main key / indicator 18, a speaker 19, and a cover 20 are disposed on the upper surface of the main body casing 11.
[0033]
The zoom ring 16 and the focus ring 17 are used when manually operating the zoom position and the focus position of the image projected and displayed by the projection lens 12.
[0034]
The main body main key / indicator 18 is an indicator composed of keys for switching on / off of power, automatic / manual, input switching and the like, and LEDs for displaying the operation state by lighting / extinguishing and lighting color. It becomes.
[0035]
The speaker 19 amplifies and outputs the presentation contents and the sound when the recorded moving image is reproduced.
[0036]
The cover 20 opens and closes when a subkey (not shown) is operated and when a memory card described later is inserted or removed. The sub key operates various operations that cannot be set by the main unit main key / indicator 18 without using a remote controller described later.
[0037]
Further, as shown in FIG. 1B, an input / output connector portion 21, an Ir receiving portion 22, and an AC adapter connecting portion 23 are disposed on the back surface of the main body casing 11.
[0038]
The input / output connector unit 21 includes, for example, a USB terminal for connection with an external device such as a personal computer, a mini D-SUB terminal for video input, an S terminal, an RCA terminal, a stereo mini terminal for audio input, and the like. Become.
[0039]
The Ir receiver 22 receives infrared light (Ir) on which key operation signals from a remote controller, which will be described later, are superimposed, like the Ir receiver 15 described above.
[0040]
The AC adapter connection unit 23 connects a cable from an AC adapter (not shown) serving as a power source.
[0041]
In addition, a pair of fixed leg portions 24 and 24 are attached to the lower surface of the main body casing 11 on the rear side, and an adjustment leg portion 25 capable of height adjustment is attached to the front side.
[0042]
By adjusting the screw rotation position manually, the adjustment leg 25 accurately adjusts the vertical direction component of the projection direction of the projection lens 12 and the photographing direction of the photographing lens 13, that is, the elevation angle.
[0043]
Next, the key arrangement of the remote controller 30 attached to the projector device 10 is illustrated in FIG.
[0044]
Here, the “Power” key for turning on / off the power, the “Present” key for setting the presentation practice mode, the “Auto” key for adjusting the RGB signal input, and the content captured in the presentation practice mode are reproduced. “PLAY PLAY” key, “Keystone” key for correcting keystone distortion associated with the positional relationship between the projector 10 and the screen to be projected, and “RGB / Comp.” For switching the image to be projected to an input image from the mini-D-SUB terminal. It is assumed that a key, an “S-Video” key for switching to an input image from the S terminal, an “Video” key for switching to an input image from the RCA terminal, and a number of other keys are arranged as illustrated.
[0045]
Next, the functional configuration of the electronic circuit of the projector apparatus 10 will be described with reference to FIG. In the figure, image signals of various standards input from the input / output connector unit 21 are unified into image signals of a predetermined format by an image conversion unit 32 via an input interface (I / F) 31 and a system bus SB. Later, it is sent to the display encoder 33.
[0046]
The display encoder 33 develops and stores the transmitted image signal in the video RAM 34, generates a video signal from the stored contents of the video RAM 34, and outputs the video signal to the display drive unit 35.
[0047]
The display driving unit 35 drives the spatial light modulation element (SOM) 36 at an appropriate frame rate, for example, 30 [frame / second] corresponding to the transmitted image signal. By irradiating the element 36 with white light with high luminance emitted from a light source lamp 37 such as an ultra-high pressure mercury lamp, a light image is formed by the reflected light, and the light is formed on a screen (not shown) via the projection lens 12. Projected display.
[0048]
However, the projection lens 12 is driven by the lens motor (M) 38 to appropriately move the zoom position and the focus position.
[0049]
In the shooting mode for shooting a projected image, the imaging surface of the CCD 40, which is a solid-state imaging device, is disposed on the optical axis of the shooting lens 13 whose zoom position and focus position are moved by the lens motor (M) 39. Then, an image signal of a corresponding analog value is generated from the CCD 40 and sent to the process circuit 41.
[0050]
The process circuit 41 digitizes an image signal obtained by the CCD 40, performs color process processing including pixel interpolation processing and γ correction processing, generates a digital luminance signal Y and color difference signals Cb and Cr, and generates a system. The data is output to the image compression / decompression unit 42 via the bus SB.
[0051]
The image compression / decompression unit 42 compresses the luminance and color difference signals by a process such as ADCT or Huffman encoding, and the obtained image data is attached to a memory card 43 that is detachably mounted as a recording medium of the projector device 10. Write sequentially.
[0052]
In the reproduction mode in which the image data recorded on the memory card 43 is read and projected and displayed, individual image data constituting a series of moving images recorded on the memory card 43 is read in units of one frame and compressed. / The decompression unit 42 decompresses the image data compressed by the procedure completely opposite to the data compression procedure in the recording mode, sends the decompressed image data to the display encoder 33, and the video RAM 34 and the display drive unit 35 Then, the spatial light modulation element 36 is driven to irradiate the light emitted from the light source lamp 37 to form an optical image with the reflected light, and the projected image is displayed through the projection lens 12.
[0053]
Note that the memory card 43 is not detachable, and may be a large-capacity storage medium built in a main body such as a hard disk device instead of a semiconductor memory.
[0054]
The control unit 44 controls all the operations of the above circuits. The control unit 44 fixedly stores a CPU and an operation program executed by the CPU in a projection mode and a reproduction mode described later. It is comprised by RAM etc. which are used as ROM and work memory.
[0055]
An audio processing unit 45 is also connected to the control unit 44 via the system bus SB.
[0056]
The sound processing unit 45 includes a sound source circuit such as a PCM sound source, converts the sound data into analog in the projection mode and the playback mode, drives the speaker 19 to emit loud sounds, and uses the microphone 14 in the presentation practice mode to be described later. The input audio signal is digitized, compressed according to a predetermined data file format, for example, MP3 (MPEG-1 audio layer 3) standard, and an audio data file is created and sent to the memory card 43.
[0057]
The main body main key / indicator 18 and a main body subkey provided in the cover 20 constitute a key / indicator section 46, and the Ir receiving section 15 and the Ir receiving section 22 constitute an Ir receiving section 47. These key operation signals and infrared light reception signals are both sent directly to the control unit 44.
[0058]
Next, the operation of the above embodiment will be described.
[0059]
FIG. 4 and FIG. 5 describe the processing contents executed mainly by the control unit 44 based on the operation program stored in the internal ROM after the power key is turned on.
[0060]
At the beginning of the processing, after the light source lamp 37 is turned on in accordance with the power key ON operation (step A01), a projection mode for performing projection display based on an image signal input from the outside of the projector device 10 is performed. Whether or not an image signal is input via any one of the terminals of the input / output connector section 21 is determined (step A02).
[0061]
Here, in a state where no image signal is input via the input / output connector unit 21, the content recorded in the memory card 43 is read and reproduced, and the process proceeds to the reproduction mode.
[0062]
If an image signal is input via the input / output connector unit 21 and it is determined that the operation in the projection mode is to be performed, the “presentation” key for setting the presentation practice mode of the remote controller 30 is operated next. Is determined based on an input signal from the Ir receiver 47 (step A03), and if not operated, a normal projection operation using an image signal input via the input / output connector unit 21 is executed as it is. By repeatedly executing the process (step A04), it waits for the “presentation” key of the remote controller 30 to be operated while executing the normal projection operation.
[0063]
When the “presentation” key of the remote controller 30 is operated, this is determined in step A03, and not only the image projected via the projection lens 12 but also the position near the screen to be projected. The angle of view of the taking lens 13 is linked to the angle of view of the projection lens 12 so that an image including a presenter who is operating the projector device 10 is captured, and is set to be wider than a certain level. (Step A05).
[0064]
In this case, when the photographing field angle of the photographing lens 13 cannot be ensured wider than a certain value with respect to the projection field angle of the projection lens 12, the photographing field angle that is the maximum within the variable range is set.
[0065]
After that, it is confirmed that there is no operation of the “presentation” key of the remote controller 30 again for canceling the presentation practice mode (step A06), and the USB connector of the input / output connector unit 21 is also connected to a PC or the like. It is confirmed whether or not an external device is connected and is not in an external recording state (step A07), and after confirming that the memory card 43 has a sufficient free space (step A08), the projection lens 12 is used. All the projection displays are executed (step A09), and at the same time, a surrounding image including the projection contents is photographed through the photographing lens 13 (step A10).
[0066]
Here, if there is not enough free space in the memory card 43, the projected image is displayed so that the presenter can recognize that fact.
"Memory is full!"
Is added and projected (step A12).
[0067]
When the image signal obtained by photographing is obtained from the CCD 40 via the process circuit 41 and is compressed in the image compression / expansion unit 42 and then recorded in the memory card 43 (step A11), the process returns to the process from step A06 again. Repeat the same process.
[0068]
If it is determined in step A07 that an external device such as a PC is connected to the USB connector of the input / output connector unit 21 and the external recording state is set, recording to the memory card 43 in step A10 is performed. Instead, a process of outputting an image signal obtained by photographing from the USB connector is executed.
[0069]
Then, when the “presentation” key of the remote controller 30 again for canceling the presentation practice mode is operated, this is determined in step A 06, and the angle of view of the photographing lens 13 is changed to the projection angle of view of the projection lens 12. After interlocking, the image range projected via the projection lens 12 is reset to a standard position where the image is almost photographed (step A13), and the process returns to step A02 again.
[0070]
Next, according to FIG. 5, it is determined in step A02 that there is no input of an image signal through the input / output connector unit 21, and that the process shifts to the processing in the reproduction mode in which the content already recorded in the memory card 43 is read and reproduced. The operation in the case of having been performed will be described.
[0071]
Here, for simplification of explanation, it is assumed that only the moving image data is recorded on the memory card 43 and no still image data or audio data is recorded.
[0072]
At the beginning of the processing, a list display using the first image of each moving image data recorded in the memory card 43 is performed (step A21), and the selection of one of them is awaited (step A22). .
[0073]
If there is an operation signal from the remote controller 30 and it is determined that any of the moving image data is selected, the image data constituting the selected moving image recorded in the memory card 43 is read in units of one frame (step A23), the image data read by the image compression / decompression unit 42 is decompressed (step A24), the decompressed image data is sent to the display encoder 33, and the spatial light modulation element is transmitted via the video RAM 34 and the display drive unit 35. 36 is driven, the light emitted from the light source lamp 37 is irradiated, an optical image is formed by the reflected light, and projected through the projection lens 12 (step A25).
[0074]
Thereafter, it is determined whether or not a temporary stop is instructed by operating the “Freeze” key of the remote controller 30 (step A26), and whether or not the displayed image data is the last image data constituting the moving image data (step A27). If it does not correspond to these, the process from step A23 is repeated and the projection display associated with the reproduction of the moving image data is executed.
[0075]
If it is determined that the pause is instructed in step A26 during the reproduction of the moving image data, the series of moving image reproduction is suspended, the image data held in the video RAM 34 is updated and stored, and the same image projection is performed. While continuing the operation, the system waits for an instruction to cancel the temporary stop by operating the “Freeze” key of the remote controller 30 again (step A28), and returns to the processing from step A23 again when the cancellation is instructed. .
[0076]
When it is determined in step A27 that the reproduction of the last one frame of image data constituting the moving image data has been completed, the process returns to step A21 in preparation for the reproduction of the next moving image data.
[0077]
In this way, when “Presentation Practice Mode” is specified, not only the projected images used in the presentation but also the presenter who makes the presentation can be taken with the angle of view contained in the image. Record the scenery and contribute to the acquisition of technology.
[0078]
FIG. 6 shows a state where recording in the presentation practice mode is performed not by the memory card 34 in the projector apparatus 10 body but by an externally connected device such as a personal computer (PC) 51 and the recorded contents are reproduced. This is just an example.
[0079]
As with recording, the USB connector of the input / output connector 21 of the projector device 10 and the personal computer 51 are connected by the USB cable 52, and the projector device 10 projects an input image from the USB connector as a normal projection mode. By recording in the presentation practice mode recorded in the personal computer 51, the practice scenery of the presentation can be easily projected on the screen SC.
[0080]
In this case, since a hard disk device or the like in the personal computer 51 having a very large capacity compared to the memory card 34 can be selected as a recording medium, it is possible to perform a presentation for a long time without worrying about the free space. But you can record the practice scene.
[0081]
Further, instead of selectively selecting the recording destination for either the memory card 34 in the projector device 10 or the externally connected device such as the personal computer 51, for example, the memory card 34 has run out of free space. When the determination is made, if a personal computer 51 or the like is further connected, the projection and recording operations in the presentation practice mode may be continued by automatically switching to output an image signal.
[0082]
Furthermore, since the remote controller 30 is provided with a “presentation” key and can immediately shift to a state where the presentation practice scene is recorded by operating the key, the presentation practice can be performed more easily.
[0083]
In the above-described embodiment, the projection lens 12 and the photographing lens 13 are both described as being automatically focused on the projected image and the photographed image under the control of the lens motors 38 and 39. In the presentation practice mode, it is assumed that one of a plurality of positions in the photographed image is selected and automatically focused, and in the presentation practice mode, for example, a presenter is generally located corresponding to the projected position image position by the photographing lens 13. It is also possible to specify a predetermined automatic focusing position, such as near the right side of the projected image to be displayed, and to have the presenter specify an arbitrary position from a plurality of automatic focusing positions corresponding to the projection position in advance. You may make it implement imaging | photography as what performs automatic focusing of the designated position.
[0084]
This makes it easier to confirm the practice effect by taking an image as intended by the presenter, for example, by automatically focusing either one of the projected image and the presenter.
[0085]
Further, in the above embodiment, since the captured image is captured after the image for one frame is reproduced, the moving image that is surely frame-synchronized with the projected image is captured. Flickering can be eliminated and the content of the projected image can be visually confirmed more reliably.
[0086]
In the above embodiment, the case where the present invention is applied to the projector device 10 using a spatial light modulation element such as a micromirror element has been described. However, the projection method is not limited, and a liquid crystal shutter is used. The same can be realized with a projector apparatus.
[0087]
In addition, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.
[0088]
Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent elements are deleted from all the constituent elements shown in the embodiment, at least one of the problems described in the column of the problem to be solved by the invention can be solved, and described in the column of the effect of the invention. In a case where at least one of the obtained effects can be obtained, a configuration in which this configuration requirement is deleted can be extracted as an invention.
[0089]
【The invention's effect】
According to the first aspect of the present invention, not only the projected image used in the presentation, but also at least a part of the presenter who makes the presentation can be photographed in one image, so that the practice scene of the presentation is recorded, Contribute to the acquisition of technology.
[0090]
Moreover, Since it is possible to immediately shift to the state where the presentation practice scene is recorded by specifying a simple mode, it is possible to practice the presentation more easily.
[0091]
Claim 2 According to the described invention, the above Claim 1 In addition to the effects of the described invention, an image that is automatically focused at a position corresponding to the projected image can be taken, so that an image that is more suitable as a practice scene for a presentation can be taken.
[0092]
Claim 3 According to the described invention, Claim 2 In addition to the effects of the invention described above, the practice effect can be confirmed more easily by capturing an image as intended by the presenter, for example, by automatically focusing one of the projected image and the presenter.
[0093]
Claim 4 According to the described invention, in addition to the effect of the invention described in the first aspect, flickering of the projected image can be eliminated, and the content of the projected image can be more reliably visually recognized.
[0094]
Claim 5 According to the invention described above, in addition to the effect of the invention of the first aspect, by connecting an apparatus having an excellent recording medium capacity or the like externally, the projection content can be obtained for a long time without worrying about the free capacity or the like. The included scene can be recorded.
[0095]
Claim 6 According to the described invention, not only the projection image used in the presentation but also at least a part of the presenter who performs the presentation can be photographed in one image. Can contribute.
[0096]
Claim 7 According to the described invention, not only the projection image used in the presentation but also at least a part of the presenter who performs the presentation can be photographed in one image. Can contribute.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an external configuration of a projector apparatus according to an embodiment of the invention.
FIG. 2 is a diagram illustrating a key arrangement of a remote controller of the projector device according to the embodiment.
FIG. 3 is a block diagram showing a functional configuration of the electronic circuit according to the embodiment.
FIG. 4 is a flowchart showing processing contents mainly in a projection mode according to the embodiment;
FIG. 5 is a flowchart showing processing contents mainly in a playback mode according to the embodiment;
6 is an exemplary view showing a state where a scene in the presentation practice mode recorded on the externally connected personal computer according to the embodiment is reproduced and displayed. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Projector apparatus, 11 ... Main body casing, 12 ... Projection lens, 13 ... Shooting lens, 14 ... Microphone, 15 ... Ir receiver, 16 ... Zoom ring, 17 ... Focus ring, 18 ... Main body main key / indicator, 19 ... Speaker, 20 ... Cover, 21 ... I / O connector, 22 ... Ir receiver, 23 ... AC adapter connection, 24 ... Fixed leg, 25 ... Adjustment leg, 30 ... Remote controller, 31 ... Input interface (I / F), 32 ... Image converter, 33 ... Display encoder, 34 ... Video RAM, 35 ... Display driver, 36 ... Spatial light modulator (SOM), 37 ... Light source lamp, 38, 39 ... Lens motor (M) , 40 ... CCD, 41 ... Process circuit, 42 ... Image compression / decompression unit, 43 ... Memory card, 44 ... Control unit, 45 ... Audio processing unit, 6 ... key / indicator unit, 47 ... Ir receiving unit, 51 ... personal computer (PC), 52 ... USB cable, SB ... system bus, SC ... screen.

Claims (7)

Projection means for forming and projecting a light image based on the input image signal;
An imaging unit having a variable function of a shooting field angle, which is opposite to the projection direction of the projection unit and includes a shooting field angle wider than the projection field angle of the projection unit;
Recording means for recording the image signal obtained by the photographing means ;
A designation means for designating a predetermined mode;
A projection apparatus comprising: an imaging control unit configured to set a shooting field angle of the imaging unit wider than a projection field angle of the projection unit based on designation by the designation unit. The imaging means has an automatic focusing function for automatically focusing by selecting one from a plurality of positions in the captured image,
The projection apparatus according to claim 1 , wherein the photographing control unit designates an automatic focusing position by the imaging unit corresponding to a projection direction of the projection unit based on designation by the designation unit. The projection apparatus according to claim 2 , further comprising selection means for arbitrarily selecting an automatic in-focus position by the imaging means designated by the imaging control means.   The projection apparatus according to claim 1, wherein the imaging unit captures a moving image that is synchronized with a projection timing of the projection unit.   The projection apparatus according to claim 1, wherein the recording unit outputs and records the image signal obtained by the photographing unit to an externally connected device. A projection step of forming and projecting a light image based on the input image signal; and
A photographing step of photographing with an imaging unit having a variable function of a photographing field angle that includes a photographing field angle wider than the projection field angle, facing the projection direction in this projection step;
A recording process for recording the image signal obtained in this photographing process;
A designation process for designating a predetermined mode;
A projection apparatus recording method comprising: an imaging control step of setting a shooting field angle of the imaging unit wider than a projection field angle in the projection step based on designation in the designation step. A projection step of forming and projecting a light image based on the input image signal; and
A shooting step of shooting with an imaging unit having a variable function of a shooting angle of view including a shooting angle of view that is wider than the projection angle of view opposite to the projection direction in this projection step;
A recording step for recording the image signal obtained in this photographing step;
A specification step for specifying a predetermined mode;
A program that causes a computer to execute an imaging control step of setting a shooting angle of view of the imaging unit wider than a projection angle of view of the projection step based on designation in the designation step.

Images