JP2012070069A - Camera with projector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera with a projector which projects a projection image to an appropriate projection destination.SOLUTION: A camera 10 with a projector includes: a camera unit 70; a projector unit 60; imaging direction change means 40; projection direction change means 30 for changing a projection direction; imaging control means 101 for respectively controlling the camera unit 70 and the imaging direction change means 40 during non-projection by the projector unit 60, so as to acquire picked-up images in multiple imaging directions by changing the imaging direction of the camera unit 70; determination means 101 for determining the projection direction by the projector unit 60, based on the picked-up images in the multiple imaging directions; correction means 101 for correcting the projection image in accordance with the determined projection direction; and projection control means 101 for respectively controlling the projector unit 60 and the projection direction change means 30 during timer clocking for self-timer imaging, so as to project the corrected projection image in the determined projection direction.

Description

  The present invention relates to a camera with a projector.

  A technique for projecting a through image from a projector during timer timing when taking a self-timer image is known (see Patent Document 1).

JP 2006-80875 A

  In the related art, there is a problem that it is difficult to confirm a projected image when there is no screen suitable for the rear side of the camera with a projector.

  The camera 10 with a projector according to the present invention includes a camera unit 70 that captures a subject image, a projector unit 60 that projects a projection image, a shooting direction changing unit 40 that changes a shooting direction by the camera unit 70, and a projection by the projector unit 60. The projection direction changing means 30 for changing the direction, and the camera unit 70 and the shooting direction changing means 40 so as to acquire the shot images in a plurality of shooting directions by changing the shooting direction by the camera unit 70 while the projector unit 60 is not projecting. A shooting control unit 101 that controls the projection direction, a determination unit 101 that determines a projection direction by the projector unit 60 based on captured images in a plurality of shooting directions, and a correction unit 101 that corrects a projection image according to the determined projection direction. During the timer timing for self-timer shooting And projection control means 101 for controlling the projector unit 60 and the projection direction changing means 30 respectively so as to project the projection image corrected to the determined projection direction, characterized in that it comprises a.

  With the camera with a projector according to the present invention, a projected image can be projected onto an appropriate projection destination.

1 is a perspective view of an electronic camera with a projector according to an embodiment of the present invention. It is a block diagram which illustrates the circuit configuration of an electronic camera. It is a figure explaining an example of keystone correction. It is a figure which illustrates the scene where an electronic camera projects the image for a monitor. It is a figure which illustrates the scene which projects the image for a monitor on the left side wall seeing from a person. It is a figure explaining the relationship between a projection direction and the monitor image projected. It is the figure which looked at the monitor image projected in FIG. 5 from the front of the projection surface. It is a flowchart explaining the flow of the monitor image projection process which CPU performs.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an electronic camera 10 with a projector according to an embodiment of the present invention. In FIG. 1, the electronic camera 10 is provided with a camera module 70 and a projector module 60. The camera module 70 is configured to be rotatable in the horizontal direction and the vertical direction, respectively, so that the photographing direction can be changed even when the housing of the electronic camera 10 is fixed. Similarly, the projector module 60 is configured to be rotatable in the horizontal direction and the vertical direction, respectively, so that the projection direction can be changed even when the housing of the electronic camera 10 is fixed.

  The camera module 70 is provided with a photographing lens 71, and the projector module 60 is provided with a projection port 66. The self-timer lamp 20 is lit during timer timing in the self-timer shooting mode.

  The electronic camera 10 has a shooting mode for shooting and a playback mode for playing back and displaying captured images. In the playback mode, in addition to displaying on the display monitor 108 (FIG. 2) provided on the back side of the electronic camera 10, it is possible to project from the projector module 60.

  FIG. 2 is a block diagram illustrating a circuit configuration of the electronic camera 10 of FIG. 2, the electronic camera 10 includes a CPU 101, a memory 102, a nonvolatile memory 111, a microphone 105, an external interface circuit 106, a power supply circuit 107, a display monitor 108, an operation member 109, a speaker 110, and the like. A self-timer lamp 20, a projector module 60, a projection direction adjusting mechanism 30, a camera module 70, and a photographing direction adjusting mechanism 40 are provided, and a detachable battery 103 and a memory card 104 are mounted.

  Based on the control program, the CPU 101 performs a predetermined calculation using signals input from each unit constituting the electronic camera 10. Then, the camera operation and the projector operation are controlled by sending control signals to each part of the electronic camera 10 based on the calculation result. The control program is stored in the nonvolatile memory 111. The CPU 101 further performs trapezoidal distortion correction (keystone correction) on the image data projected by the projector module 60 by image processing.

  The memory 102 is used as a working memory for the CPU 101. The memory card 104 is configured by a nonvolatile memory. The memory card 104 can write, save, and read data such as image data output from the camera module 70 and video / audio data input from the outside via the external interface circuit 106 according to instructions from the CPU 101. is there.

  The microphone 105 converts the collected sound into an electrical signal and sends it to the CPU 101. The audio signal is recorded on the memory card 104 during recording. The external interface circuit 106 transmits / receives data to / from a cradle (not shown) or an external device connected to the cradle according to an instruction from the CPU 101. Data to be transmitted / received is video / audio data or a control signal for the electronic camera 10. The external interface circuit 106 also includes a power supply line.

  The speaker 110 reproduces sound based on the sound signal output from the CPU 101. The operation member 109 includes the operation buttons described above, and sends operation signals corresponding to the operation buttons to the CPU 101.

  The battery 103 is constituted by a rechargeable secondary battery. The power supply circuit 107 includes a DC / DC conversion circuit, a charging circuit, and a voltage detection circuit, and converts the voltage of the battery 103 into a voltage necessary for each part in the electronic camera 10. The power supply circuit 107 further charges the battery 103 with a charging current supplied via the external interface circuit 106 when the voltage of the battery 103 is low and the remaining capacity is low.

  The display monitor 108 has a liquid crystal display panel, and displays information such as images and texts according to instructions from the CPU 101. The self-timer lamp 20 notifies the operation of the self-timer by emitting, for example, red flashing light in response to an instruction from the CPU 101.

  The projection direction adjusting mechanism 30 includes a motor (not shown) that rotates the projector module 60 in the horizontal direction and a motor (not shown) that rotates the projector module 60 in the vertical direction, and controls the projection direction by the projector module 60. To do. The projection of the projection direction is instructed from the CPU 101.

  The shooting direction adjustment mechanism 40 includes a motor (not shown) that rotates the camera module 70 in the horizontal direction and a motor (not shown) that rotates the camera module 70 in the vertical direction, and controls the shooting direction of the camera module 70. To do. The instruction of the photographing direction is instructed from the CPU 101.

  The projector module 60 and the camera module 70 are configured such that the projection port 66 (FIG. 1) and the opening (FIG. 1) of the photographing optical system (photographing lens 71) are independently rotatable by the above-described configuration.

<Camera module>
The camera module 70 includes a shooting lens (shooting optical system) 71, an image sensor 72, a lens driving circuit 73, and a shooting control circuit 74. As the image sensor 72, a CCD, a CMOS image sensor or the like is used. The imaging control circuit 74 controls driving of the image sensor 72 and the lens driving circuit 73 according to an instruction from the CPU 101, and performs predetermined image processing on an imaging signal (accumulated signal) output from the image sensor 72. Image processing includes white balance processing and gamma processing.

  The photographing lens 71 forms a subject image on the imaging surface of the image sensor 72. The imaging control circuit 74 causes the image sensor 72 to start imaging in response to an imaging start instruction, reads an accumulation signal from the image sensor 72 after the imaging is completed, sends the image processing to the CPU 101 as image data.

  The lens driving circuit 73 drives a focus lens (not shown) constituting the photographing lens 71 forward and backward in the optical axis direction based on the focus adjustment signal output from the photographing control circuit 74. The lens driving circuit 73 drives the zoom lens (not shown) constituting the photographing lens 71 to advance and retreat in the optical axis direction (tele side or wide side) based on the zoom adjustment signal output from the photographing control circuit 74. . The focus adjustment amount and the zoom adjustment amount are instructed from the CPU 101 to the photographing control circuit 74.

<Camera focus adjustment>
The camera module 70 adjusts the focus of the photographing lens 71 by shifting the focus lens constituting the photographing lens 71 in the optical axis direction. When performing autofocus adjustment, the CPU 101 integrates high frequency components (so-called focus evaluation value) for the image signal corresponding to the focus detection area (for example, the center of the shooting screen) among the image signals captured by the image sensor 72. A focus adjustment signal is sent to the imaging control circuit 74 so as to maximize. The position of the focus lens that maximizes the focus evaluation value is a focus position that eliminates blurring of the edge of the subject image captured by the image sensor 72 and maximizes the contrast of the image.

<Camera zoom adjustment>
The camera module 70 performs optical zoom adjustment of the photographing lens 71 by shifting the zoom lens constituting the photographing lens 71 in the optical axis direction. The CPU 101 sends a zoom adjustment signal to the photographing control circuit 74 in response to a zoom operation signal from a zoom switch (not shown) that constitutes the operation member 109.

<Projector module>
The projector module 60 includes a projection lens (projection optical system) 61, a liquid crystal panel 62, an LED light source 63, a projection control circuit 64, and a lens drive circuit 65. The projection control circuit 64 supplies a drive current to the LED light source 63 in accordance with a projection instruction output from the CPU 101. The LED light source 63 illuminates the liquid crystal panel 62 with brightness according to the supplied current.

  The projection control circuit 64 further generates a liquid crystal panel drive signal in accordance with the image data sent from the CPU 101, and drives the liquid crystal panel 62 with the generated drive signal. Specifically, a voltage corresponding to the image signal is applied to the liquid crystal layer for each pixel. In the liquid crystal layer to which a voltage is applied, the arrangement of liquid crystal molecules changes, and the light transmittance of the liquid crystal layer changes. Thus, the liquid crystal panel 62 generates an optical image by modulating the light from the LED light source 63 in accordance with the image signal.

  The projection lens 61 forms an image of the projected light beam emitted from the liquid crystal panel 62 on the screen. Based on the offset adjustment signal output from the projection control circuit 64, the lens driving circuit 65 drives the projection lens 61 to advance and retract in a direction orthogonal to the optical axis. Further, the lens driving circuit 65 drives the focus lens (not shown) constituting the projection lens 61 to advance and retreat in the optical axis direction based on the focus adjustment signal output from the projection control circuit 64. The lens driving circuit 65 further drives a zoom lens (not shown) constituting the projection lens 61 forward and backward in the optical axis direction based on the zoom adjustment signal output from the projection control circuit 64. The offset adjustment amount, the focus adjustment amount, and the zoom adjustment amount are instructed from the CPU 101 to the projection control circuit 64.

<Offset of projected image>
By rotating the projector module 60, the emission direction of the light beam emitted from the projection port 66 changes, and the projection image is offset. In addition to rotating the projector module 60, the projection image can be offset by shifting the projection lens 61 in a direction orthogonal to the optical axis. In addition, the liquid crystal panel 62 and the LED light source 63 may be shifted in the direction perpendicular to the optical axis.

<Keystone correction of projected images>
When the projected image is offset, keystone correction is performed on the data to be projected according to the offset amount. By simply giving the offset to the projection image, the projection image changes to a trapezoid when the projection light beam is irradiated obliquely onto the projection surface. Even when the light beam is irradiated perpendicularly to the projection surface, when a person observing the projection image observes the projection image from an oblique direction, the projection image is observed in a trapezoidal shape.

  Therefore, the CPU 101 electrically performs keystone correction by image processing in order to correct the projected image from the trapezoidal shape to the rectangular shape. FIG. 3 is a diagram for explaining an example of keystone correction. In FIG. 3, the distance from the electronic camera 10 to the projection surface is y, and the angle at which the projected light beam is emitted from the center of the projection port 66 of the projector module 60 is θ. A person P who observes the projected image is located at a shooting distance x from the electronic camera 10 on a straight line parallel to the projection plane.

The distance DisA from the right end A of the projected image to the person P is expressed by the following equation (1).
DisA = √ (y ² + (x + ytanθ) ² ) (1)
Further, the distance DisB from the left end B of the projected image to the person P is expressed by the following equation (2).
DisB = √ (y ² + (x−ytanθ) ² ) (2)

The CPU 101 corrects the height HeightA of the projected image at the right end A and the height HeightB of the projected image at the right end B so as to satisfy the following expression (3).
HeightB = HeightA × DisB / DisA (3)
The CPU 101 performs a correction process on the projection image data on the memory 102, and sends the corrected image data to the projection control circuit 64. Thereby, distortion of the projection image seen from the person P is suppressed.

<Focus adjustment of projected image>
By shifting the focus lens constituting the projection lens 61 in the optical axis direction, the projector module 60 adjusts the focus of the projected image. The CPU 101 sends a focus adjustment signal to the projection control circuit 64 in accordance with the operation signal from the operation member 109.

<Zoom adjustment of projected image>
The projector module 60 performs zoom adjustment of the projected image by shifting the zoom lens constituting the projection lens 61 in the optical axis direction. The CPU 101 sends a zoom adjustment signal to the projection control circuit 64 in accordance with an operation signal from the operation member 109.

<Projection source: source>
In the playback mode, the projector module 60 receives the following source 1. Or source 2. Project content by either Whenever the source switching operation signal is input from the operation member 109, the CPU 101 converts the projection image into the source 1. → 2. → 1. Image data corresponding to each image is sent to the projector module 60 so as to be switched in this order.

Source 1. 1. Reproduced image source based on data read from the memory card 104 Reproduced image by data input from external interface circuit 106

  The CPU 101 uses the source 1. For example, the image data with the newest recording date is sequentially read from the memory card 104, and the read image data is sent to the projector module 60. When text data is selected as the content data, data for projecting the text screen is sent to the projector module 60.

  The projector module 60 projects a monitor image (also referred to as a through image) according to an instruction from the CPU 101 in the shooting mode. Specifically, in the self-timer shooting mode, the camera module 70 captures images for monitoring during the time measurement by the timer, and repeats the operation of outputting the image data obtained from the imaging signals to the projector module 60, thereby The monitor image as a view is sequentially projected.

  Since this embodiment has a feature in the projection operation performed in the self-timer photographing mode, the following description will be focused on this point. FIG. 4 is a diagram illustrating a scene in which the electronic camera 10 projects a monitor image. Persons P and Q take a self-timer image by fixing electronic camera 10 on a tripod. The CPU 101 projects a monitor image from the projector module 60 onto, for example, the back side of the electronic camera 10. As a result, the persons P and Q positioned in front of the electronic camera 10 are in front of P and Q and see the monitor image projected on the wall behind the electronic camera 10 to determine the composition and their own The standing position can be confirmed.

  In FIG. 4, the left and right sides of the projected image are reversed compared to the actually photographed image so that the persons P and Q can easily change their standing positions. For this reason, if the person P moves to the right, the person image A in the projection image moves to the right in the projection image.

  As illustrated in FIG. 5, the rear wall of the electronic camera 10 may not be suitable for projection. In this case, the CPU 101 projects the monitor image toward other walls (side walls, ceiling, floor) that are visible from the persons P and Q. In the example of FIG. 5, the monitor image is projected on the left side wall (right side of the electronic camera 10) as viewed from the persons P and Q. The persons P and Q can confirm the standing position by looking at the monitor image projected on the side wall.

  FIG. 6 is a diagram for explaining the relationship between the projection direction by the projector module 60 and the projected monitor image. In FIG. 6, a person P stands on the left side and a person Q stands on the right side when viewed from the electronic camera 10. When the monitor image is displayed on the display monitor 108 on the back of the electronic camera 10, the subject image of the person P is on the left and the subject image of the person Q is on the right, as in the case of the actually captured image.

  When the CPU 101 projects the monitor image on the right side wall (left side of the electronic camera 10) as viewed from the persons P and Q, the subject image of the person P is set to the left as in the case of the actually captured image. The subject image of the person Q is projected to the right. If the person P moves to the right, the person image A in the projection image moves to the left in the projection image.

  When the CPU 101 projects a monitor image on the floor surface in front of the persons P and Q (between the electronic camera 10 and the persons P and Q), the CPU 101 projects the actually captured image upside down. . Accordingly, the persons P and Q visually recognize the subject image of the person P on the right and the subject image of the person Q on the left. For this reason, if the person P moves to the right, the person image A in the projection image moves to the right in the projection image.

  When the CPU 101 projects the monitor image on the ceiling above the persons P and Q (between the electronic camera 10 and the persons P and Q), the image is projected upside down from the actually captured image. Accordingly, the persons P and Q visually recognize the subject image of the person P on the right and the subject image of the person Q on the left. For this reason, if the person P moves to the right, the person image A in the projection image moves to the right in the projection image.

  When the CPU 101 projects the monitor image on the left side wall (right side of the electronic camera 10) as viewed from the persons P and Q, the subject image of the person P is set to the left as in the case of the actually captured image. The subject image of the person Q is projected to the right. If the person P moves to the right, the person image A in the projection image moves to the left in the projection image.

  When projecting from the projector module 60 to the ceiling, floor, or left and right side walls, the projected light flux is incident obliquely on the projection surface, and the persons P and Q observe the projected image from an oblique direction. The keystone correction described above is performed. FIG. 7 is a view of the monitor image projected on the left side wall as viewed from the persons P and Q in FIG. 5 as seen from the front of the projection plane. In FIG. 7, the height at the right end (HeightA) is higher than the height at the left end (HeightB).

  However, the persons Q and P who observe the projected image illustrated in FIG. 7 from an oblique direction can observe the projected image in a square shape. The CPU 101 acquires distance information (the shooting distance x and the projection distance y illustrated in FIG. 3) necessary for the keystone correction process based on the position of the focus lens after the focus adjustment by the camera module 70. The nonvolatile memory 111 stores in advance a table indicating the relationship between the position of the focus lens constituting the photographing lens 71 and the subject distance. The CPU 101 reads the subject distance corresponding to the focus lens position, and performs the above-described correction process based on the read distance.

  FIG. 8 is a flowchart for explaining the flow of monitor image projection processing performed by the CPU 101. When the CPU 101 receives an operation signal for switching to a shooting mode from a mode switch (not shown) constituting the operation member 109, the CPU 101 activates the camera module 70. Further, when the CPU 101 receives a release signal from a release switch (not shown) constituting the operation member 109, the CPU 101 starts a program for performing the processing shown in FIG.

  In step S11 of FIG. 8, the CPU 101 determines whether or not the self (self-timer) shooting mode is set. If the CPU 101 is in the self-photographing mode, it makes a positive determination in step S11 and proceeds to step S12. If the CPU 101 is not in the self-photographing mode, the CPU 101 makes a negative determination in step S11 and proceeds to step S27. In step S27, the CPU 101 performs shooting processing in another shooting mode, and ends the processing in FIG.

  In step S12, the CPU 101 sends an instruction to the camera module 70 to photograph the front side (backward direction of the electronic camera 10) as viewed from the persons P and Q, and proceeds to step S13. For the shooting distance, for example, an initial value is set to 5 m, and the focus is adjusted so that the focus position is searched in the short distance direction.

  In step S13, the CPU 101 sends an instruction to the camera module 70 to photograph the right side (left side of the electronic camera 10) as viewed from the persons P and Q, and proceeds to step S14. For the shooting distance, for example, an initial value is set to 5 m, and the focus is adjusted so that the focus position is searched in the short distance direction.

  In step S14, the CPU 101 sends an instruction to the camera module 70 to photograph the left side (right side of the electronic camera 10) as viewed from the persons P and Q, and proceeds to step S15. For the shooting distance, for example, an initial value is set to 5 m, and the focus is adjusted so that the focus position is searched in the short distance direction.

  In step S15, the CPU 101 sends an instruction to the camera module 70 to photograph the ceiling, and proceeds to step S16. As for the shooting distance, for example, the shooting distance is set to an initial value of 5 m, and the focus is adjusted so that the focus position is searched in the short distance direction.

  In step S16, the CPU 101 sends an instruction to the camera module 70 to photograph the lower front (floor), and proceeds to step S17. For the shooting distance, for example, an initial value is set to 5 m, and the focus is adjusted so that the focus position is searched in the short distance direction.

  In step S17, the CPU 101 determines a projection plane based on the image data acquired in steps S12 to S16. For example, the CPU 101 performs white color determination and no pattern determination, and determines a projection plane based on both determination results.

<White judgment>
The CPU 101 divides the captured image in each direction into an R color component image, a G color component image, and a B color component image, and calculates a difference between the color component images. CPU 101 determines that the image is a white image if the difference calculated for each pixel is less than or equal to a predetermined value in a predetermined divided region (for example, five regions at the center and four corners) of the image.

  In general, the projection surface is preferably an achromatic color with low saturation. In the achromatic color, the signal ratios of the R component, G component, and B component in the image are substantially equal. Therefore, the CPU 101 detects the achromatic state in which the ratios of the R component, the G component, and the B component are substantially equal by the white determination.

<Pattern judgment>
The CPU 101 generates a density histogram based on the image data constituting the captured image in each direction, and determines whether the histogram is included in a predetermined density width. If the histogram is included in the predetermined density range, the CPU 101 determines that the image is a patternless image.

  Generally, it is desirable that the projection surface has no ground pattern. Since the pattern appears due to a change in the density of the image, if the density change is within the predetermined range, the projection plane is flat (no shadows) and has no ground pattern. It is likely to be appropriate. Therefore, the CPU 101 detects the no pattern state by the above pattern determination.

  The CPU 101 determines the projection plane as follows from the shooting direction of the image that has been subjected to the above-described white determination and has been determined to have no pattern. That is, when a plurality of shooting directions are candidates for the projection plane, the CPU 101 preferentially determines the front-right-left-ceiling-front side (floor) as viewed from the subject person.

  In step S18, the CPU 101 sends an instruction to the projector module 60, and proceeds to step S19 toward the projection plane for which the projection direction has been determined. In step S19, the CPU 101 sends an instruction to the camera module 70, directs the photographing lens 71 to the front, and proceeds to step S20.

  In step S20, the CPU 101 sends an instruction to the projector module 60 to start projection, and proceeds to step S21. The CPU 101 determines a correction coefficient for keystone correction using the above equation (3), and starts projection after setting up / down or left / right reversal processing as necessary. At this time, the LED light source 63 remains on, and a white image is projected, for example.

  In step S21, the CPU 101 sends an instruction to the camera module 70 to capture (acquire) a through image in the front direction of the electronic camera 10, and the process proceeds to step S22. In step S22, the CPU 101 sends an instruction to the projector module 60, writes a through image on the liquid crystal panel 62, and proceeds to step S23. Accordingly, the through image is projected from the projector module 60 as a monitor image.

  In step S23, the CPU 101 starts measuring time for self-timer shooting and proceeds to step S24. In step S24, the CPU 101 determines whether the time is up. If the time is up, the CPU 101 makes a positive determination in step S24 and proceeds to step S25. If the time is not up, the CPU 101 makes a negative determination in step S24 and repeats the determination process while continuing the time measurement.

  In step S25, the CPU 101 sends an instruction to the projector module 60, ends the projection, and proceeds to step S26. In step S <b> 26, the CPU 101 sends an instruction to the camera module 70 to perform a shooting process, and the process in FIG.

According to the embodiment described above, the following operational effects can be obtained.
(1) The camera with a projector 10 includes a camera module 70 that captures a subject image, a projector module 60 that projects a projection image, a shooting direction adjustment mechanism 40 that changes a shooting direction by the camera module 70, and a projection by the projector module 60. The CPU 101 includes a projection direction adjusting mechanism 30 that changes the direction, and the CPU 101 so that, while the projector module 60 is not projecting, the shooting direction by the camera module 70 is changed to acquire shot images in a plurality of shooting directions. The camera module 70 and the shooting direction adjustment mechanism 40 are controlled, the projection direction by the projector module 60 is determined based on the shot images in a plurality of shooting directions, the projection image is corrected according to the determined projection direction, and self-timer shooting is performed. After correction during timer timing for The projector module 60 and the projection direction adjusting mechanism 30 so as to project the projection direction determining the projected image was so controlled respectively. Thereby, a projection image can be projected on a suitable projection destination.

(2) The CPU 101 that determines the projection direction by the projector module 60 selects a shooting direction based on a predetermined priority order from a plurality of shooting directions, and information obtained from a shot image in the shooting direction satisfies a predetermined determination condition. In this case, since the shooting direction is set as the projection direction by the projector module 60, it is easy to observe from the subject person and can be projected onto an appropriate projection destination.

(3) Since the determination condition of (2) is that at least the saturation of the photographed image is less than a predetermined value or the density difference of the photographed image is less than the predetermined difference, the saturation is low, there is no undulation, and there is no shadow This makes it possible to select a projection destination suitable for projection with little background pattern.

(4) Since the priority order determined according to the photographing mode or the photographing conditions is used, the projection destination can be selected in consideration of, for example, the backlighting state.

(5) Since the projector module 60 projects the subject image photographed by the camera module 70 during timing as a projected image, the subject person can check the composition by observing the projected image during the self-timer timing. it can.

(Modification 1)
The priority order for determining the projection plane in step S17 described above may vary depending on the shooting mode. When the backlight photographing mode is selected by the mode switching dial constituting the operation member 109, the CPU 101 determines the order of determining the projection plane as right-left-front-ceiling-front side (floor) when viewed from the subject person. Switch in order. In the case of backlight photography, since the brightness of the front is assumed to be high, the order of projection toward the front is lowered. The projection destination can be selected in consideration of the shooting environment for each mode.

  Further, when the portrait shooting mode is selected by the mode switching dial constituting the operation member 109, the CPU 101 determines the order of determining the projection plane from the front-ceiling-right-left-front side (viewing the subject person). Switch in the order of floor). For portrait photography, raise the order of projection onto the ceiling. The projection destination can be selected in consideration of the observation environment for each mode. Note that the priority order for determining the projection plane may be varied depending on the shooting conditions set in the camera.

(Modification 2)
When the shooting distance x is longer than a predetermined distance (for example, 5 m), the CPU 101 may send an instruction to the projector module 60 to greatly enlarge the size of the projected image. This is because when the shooting distance x is long, the distance (DisA, DisB) at which the person P observes the projection image also becomes long, so that the projection image is enlarged and easily seen.

(Modification 3)
When the shooting distance x is longer than a predetermined distance (for example, 5 m), the CPU 101 may send an instruction to the projector module 60 to change the color intensity of the projected image to be high. This is because if the shooting distance x is long, the distance (DisA, DisB) at which the person P observes the projection image also becomes long, so that the darkness of the projection image is increased for easy viewing.

(Modification 4)
A countdown display during time measurement may be included in the projected image during time measurement by the self-timer. The subject person P can know the shooting timing in addition to the composition confirmation.

(Modification 5)
In addition to switching the order of determining the projection plane according to the above-described shooting mode, the order may be switched according to the ratio of the shooting distance x and the projection distance y. For example, when the ratio of x is high, the order of projecting left and right as viewed from the subject person is lowered. This is because the projected image is difficult to observe.

(Modification 6)
When the ratio of the shooting distance x and the projection distance y described above exceeds a predetermined ratio (for example, x / y is 10 or more), the projection at the time of self-timer shooting may be prohibited. This is because it is difficult to observe the projected image, so that unnecessary projection is stopped.

  The above description is merely an example, and is not limited to the configuration of the above embodiment.

DESCRIPTION OF SYMBOLS 10 ... Electronic camera with a projector 30 ... Projection direction adjustment mechanism 40 ... Shooting direction adjustment mechanism 60 ... Projector module 70 ... Camera module 101 ... CPU
102 ... Memory 108 ... Display monitor 109 ... Operation member 111 ... Non-volatile memory

Claims (7)

A camera unit for capturing a subject image;
A projector unit that projects a projected image;
Photographing direction changing means for changing a photographing direction by the camera unit;
A projection direction changing means for changing a projection direction by the projector unit;
Shooting control means for controlling the camera unit and the shooting direction changing means to change the shooting direction of the camera unit and acquire shot images in a plurality of shooting directions while the projector unit is not projecting,
Determining means for determining a projection direction by the projector unit based on the photographed images in the plurality of photographing directions;
Correction means for correcting a projected image according to the determined projection direction;
Projection control means for controlling the projector unit and the projection direction changing means to project the corrected projection image in the determined projection direction during timer timing for self-timer shooting,
A camera with a projector, comprising: The camera with a projector according to claim 1,
The determining means selects a shooting direction based on a predetermined priority order from the plurality of shooting directions, and determines the shooting direction when the information obtained from the shot image in the shooting direction satisfies a predetermined determination condition. A projector-equipped camera, characterized by having a projection direction according to. The camera with a projector according to claim 2,
The camera with a projector according to claim 1, wherein the determination condition is that at least a saturation of the photographed image is less than a predetermined value or a density difference between the photographed images is less than a predetermined difference. The camera with a projector according to claim 2 or 3,
The camera with a projector, wherein the priority is determined according to a shooting mode or a shooting condition. In the camera with a projector as described in any one of Claims 1-4,
The projector-equipped camera, wherein the projector unit projects a subject image photographed by the camera unit during the timekeeping as a projection image. The camera with a projector according to claim 5,
The camera with a projector characterized in that the correction means corrects a projected image larger as the shooting distance is longer. The camera with a projector according to claim 5 or 6,
The camera with a projector, wherein the correcting unit corrects the contrast of the projected image higher as the shooting distance is longer.

Images