JP4973427B2 - Camera with projector - Google Patents

Description

  The present invention relates to a camera with a projector.

  An electronic camera equipped with a projector is known (see Patent Document 1). The electronic camera automatically starts projection when the projection direction and the shooting direction are opposite to each other.

JP 2006-80875 A

  There is a problem that power consumption increases when projection by a projector is continued.

The camera with a projector according to claim 1 , wherein a projection unit, an imaging unit, a detection unit that detects a region indicating a face from a subject image acquired by the imaging unit, and a face region detected by the detection unit wherein comprising a from the projection unit control means for starting the projection of said object image, an operation member for emitting first signal instructing the start of imaging, and a second signal before instruction of the photographing start, respectively, to the control means Is characterized in that projection of the subject image is started from the projection unit when a face area is detected by the detection means and the second signal is emitted from the operation member .
The camera with a projector according to claim 2, wherein a projection unit, an imaging unit, a detection unit that detects a region indicating a face from a subject image acquired by the imaging unit, and a face region detected by the detection unit A control means for starting projection of the subject image from the projection unit, a comparison means for comparing the image acquired by the imaging unit with reference data, and identifying a specific person based on a comparison result by the comparison means And an identification unit that performs projection of the subject image from the projection unit when a face region is detected by the detection unit and the identification unit identifies a specific person with respect to the face region. It is characterized by starting.
The camera with a projector according to claim 3 further includes distance measuring means for detecting distance information to a subject in the camera with a projector according to claim 1 or 2, wherein the control means is further provided with the distance measuring means. When the detected distance information is greater than or equal to a predetermined distance, projection of the subject image is started from the projection unit.
According to a fourth aspect of the present invention, in the camera with a projector according to the first or second aspect, the control unit may further include the control unit when the size of the face area detected by the detection unit is a predetermined value or less. Projection of the subject image is started from the projection unit.
The camera with a projector according to claim 5 is the camera with a projector according to claim 1 or 2, wherein the control unit further includes the projection direction when the projection direction by the projection unit and the imaging direction by the imaging unit are not substantially parallel. Projection of the subject image is started from the projection unit.
The camera with a projector according to claim 6 is the camera with a projector according to claim 1, wherein the control means starts the projection by the projection unit and then the second signal is emitted from the operation member. Projection by the projection unit is stopped.
According to a seventh aspect of the present invention, there is provided the camera with a projector according to the second aspect, further comprising an operation member that emits a first signal for instructing start of photographing and a second signal before the instruction for starting of photographing. The control means stops projection by the projection unit when the first signal is issued from the operation member after starting projection by the projection unit.
The camera with a projector according to claim 8 is the camera with a projector according to claim 1 or 2, wherein the control unit projects the projection by the projection unit when a predetermined time elapses after the projection by the projection unit is started. It is characterized by stopping.
The camera with a projector according to claim 9 is the camera with a projector according to claim 3, wherein the control means starts the projection by the projection unit, and then the distance information detected by the distance measuring means is less than a predetermined distance. In this case, the projection by the projection unit is stopped.
The camera with a projector according to claim 10 is the camera with a projector according to claim 4, wherein the control unit has a predetermined size of the face area detected by the detection unit after starting projection by the projection unit. When larger than the value, the projection by the projection unit is stopped.
The camera with a projector according to claim 11 is the camera with a projector according to claim 5, wherein the control unit determines a projection direction by the projection unit and a photographing direction by the imaging unit after starting projection by the projection unit. Projection by the projection unit is stopped when they are substantially parallel.
The camera with a projector according to claim 12, an imaging unit that acquires a subject image, a projection unit that projects an image showing the subject captured by the imaging unit, and a face from the subject image acquired by the imaging unit. A detection unit that detects a region to be indicated; and a control unit that starts projection of the subject image from the projection unit when a face region is detected by the detection unit.
The camera with a projector according to claim 13 is the camera with a projector according to claim 12, wherein the projection unit projects the image onto a ground surface or a floor surface between the imaging unit and the subject. And
The camera with a projector according to claim 14, further comprising a display unit that displays the image in the camera with a projector according to claim 12 or 13, wherein the projection unit displays the image displayed by the display unit. In this case, an image that is inverted horizontally is projected.

  In the camera with a projector according to the present invention, power consumption due to projection can be reduced.

  The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a front view of an electronic camera 10 with a projector according to an embodiment of the present invention. In FIG. 1, a photographing lens 71, a projection port 67 of a projector, a self-timer lamp 13, and a flash light source unit 21 are disposed on the front surface of the electronic camera 10. On the top surface of the electronic camera 10, a zoom switch 11, a release button 12, and a projector button 14 are disposed. The release button 12 is an operation member for instructing the electronic camera 10 to take a picture. The zoom switch 11 is an operation member for instructing the electronic camera 10 to zoom down or zoom up. The projector button 14 is an operation member for instructing the electronic camera 10 to perform projection.

  FIG. 2 is a rear view of the electronic camera of FIG. In FIG. 2, a display monitor 108, a switching button 15, a mode button 16, a menu button 17, a delete button 18, an OK button 20 and a dial 19 are provided on the back of the electronic camera 10. The dial 19 configured in a ring shape generates a rotation operation signal corresponding to the rotation operation and a pressing position signal corresponding to the pressing operation. The OK button 20 is disposed at the center of the dial 19. The dial 19 and the OK button 20 are operation members for instructing the electronic camera 10 to make various settings.

  The switch button 15 is an operation member for instructing the electronic camera 10 to switch between a shooting mode for shooting and a playback mode for playing back and displaying a shot image. The mode button 16 is an operation member for causing the display monitor 108 to display a mode selection screen in which menus are arranged. The menu button 17 is an operation member for causing the display monitor 108 to display a menu selection screen. The delete button 18 is an operation member for instructing the electronic camera 10 to delete an image file.

  FIG. 3 is a block diagram illustrating a circuit configuration of the electronic camera 10 of FIG. In FIG. 3, an electronic camera 10 includes a CPU 101, a memory 102, a microphone 105, an external interface circuit 106, a power supply circuit 107, a display monitor 108, an operation member 109, a speaker 110, a self-timer lamp 13, and the like. The projector module 60 and the camera module 70 are provided, and a detachable battery 103 and a memory card 104 are mounted.

  As shown in FIG. 1, the projector module 60 and the camera module 70 are provided with a projection port 67 and an opening of a photographing optical system (photographing lens 71) on a common surface.

  Based on the control program, the CPU 101 performs a predetermined calculation using signals input from each unit constituting the electronic camera 10 and sends a control signal to each unit of the electronic camera 10 to perform camera operation and Each projector operation is controlled. The control program is stored in a nonvolatile memory (not shown) in the CPU 101. 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. It is.

  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 13 notifies the operation of the self-timer by emitting, for example, red flashing light in response to an instruction from the CPU 101. The flash light source unit 21 emits a predetermined amount of light in response to an instruction from the CPU 101 in the shooting mode.

(The 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 in accordance with an instruction from the CPU 101 and performs predetermined image processing on the imaging signal (accumulated charge 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 the imaging start instruction, reads the accumulated charge 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 accordance with a zoom operation signal from the operation member 109 (zoom switch 11).

(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, a lens drive circuit 65, and a mirror 66. 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 guides the light image emitted from the liquid crystal panel 62 to the mirror 66. The mirror 66 is configured to be rotatable in the direction of the arrow with the rotation axis P as the rotation center. The projection light beam bent by the mirror 66 is emitted from the projection port 67 toward the screen or the like.

  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.

(Projected image offset)
When the mirror 66 is rotated around the rotation axis P, the emission direction of the light beam emitted from the projection port 67 changes, and the projection image is offset. In addition to rotating the mirror 66, the projection image can be offset by shifting the projection lens 61 in a direction perpendicular 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 image)
When the projected image is offset, keystone correction is performed on the data to be projected according to the offset amount. Since the projection image changes to a trapezoidal shape only by giving the offset to the projection image, the CPU 101 performs electrical keystone correction by image processing to correct the projection image from a trapezoidal shape to a rectangular shape. The memory in the CPU 101 stores an initial correction value for correcting the projected image into a square shape in advance. The CPU 101 reads an initial correction value corresponding to the offset adjustment amount, performs keystone correction processing on the image data to be projected based on the read initial correction value on the memory 102, and outputs the image data after the keystone correction processing to the projection control circuit. 64.

(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)
By shifting the zoom lens constituting the projection lens 61 in the optical axis direction, the projector module 60 performs zoom adjustment of the projected image. 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 and play back content based on 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. When the image corresponding to is projected, the image data with the newest recording date and time (the last recorded image data taken) is read sequentially from the memory card 104, and the read image data is sent to the projector module 60. Send it out. 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, the camera module 70 performs monitor imaging before a shooting instruction (release button operation), and repeats the operation of outputting image data obtained from the imaging signal to the projector module 60, thereby sequentially monitoring images. Project.

  Since the present embodiment has a feature in the projection operation performed in the 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. The photographer A photographs the person B, the person C, and the person D using the electronic camera 10. The electronic camera 10 adjusts the angle of the mirror 66 of the projector module 60 and projects the image about 60 degrees below the horizontal direction (the shooting direction by the camera module 70). Thereby, the monitor image is projected on the ground (floor surface) between the electronic camera 10 and the subject (person B-person D).

  The projected image is such that the image b of the person B is positioned to the left of the image c of the person C, the image d of the person D is positioned to the right of the image c of the person C, and the top and bottom are normal images when viewed from the subject side. Inverted. FIG. 5 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 the photographing mode from the switch button 15 constituting the operation member, the CPU 101 activates the camera module 70 and activates a program for performing the processing shown in FIG.

  In step S11 of FIG. 5, the CPU 101 sends an instruction to the imaging control circuit 74, causes the camera module 70 to perform imaging for monitoring, and proceeds to step S12. The CPU 101 receives data of the captured monitor image and displays it on the display monitor 108. In step S12, the CPU 101 performs face detection processing using the monitor image data, and extracts a human face as follows. As an extraction method, there are a plurality of methods such as a method for extracting a specific color, a method for extracting a specific shape pattern, a method for removing a region estimated to correspond to the background, and the like disclosed in JP-A-9-138470. Evaluate different extraction methods in advance to determine the weight, extract the main subject image (main part) with each extraction method, weight the extracted main part with the determined weight, and select the main part according to the result Judge and extract.

  Another main part extraction method is disclosed in Japanese Patent Application Laid-Open No. 9-138471, which measures the density or luminance at a plurality of points in an image to determine the amount of change, and the amount of change is a predetermined value or more. Is set as a reference point, and then the search range and search direction pattern are set using the change amount of density, etc. within a predetermined range from the reference point, and the change amount of density, etc. in the direction indicated by the search direction pattern within the search range Is searched for a portion having a predetermined value or more, and then the search is repeated using this portion as a reference, and the main part is extracted by connecting the searched and set reference points.

  In step S <b> 13, the CPU 101 determines whether or not a condition for turning on the projector module 60 is satisfied. The ON condition is set in advance by a menu selection operation. For the ON condition, any one of the following items is selected.

[1] When a face is extracted from the monitor image [2] When a face is extracted from the monitor image and the release button 12 is pressed halfway [3] A face is extracted from the monitor image and the extracted face When it is determined that the registered person is a registered person [4] When any one of the above [1] to [3] is satisfied and the distance measurement information is a predetermined distance or more [5] [1] When [3] is satisfied and the size of the extracted face is equal to or smaller than a predetermined size [6] When the projection is turned on

  In the above [3], whether or not the person is a specific person is determined by performing a comparison process between the registrant's face image (reference data) and the “face” in the monitor image. For the comparison process, for example, a technique disclosed in Japanese Patent Laid-Open No. 9-251534 is used. The technique disclosed in the above publication extracts a human face area from a photographed image, acquires feature point data (eg, eye and nose position) from the extracted face area, and is registered in advance using this feature point data. Identify the person.

  Information obtained by the focus adjustment process is used as the distance measurement information of [4] above. The position information of the focus lens at the time of focusing becomes information indicating the subject distance. The face size in [5] above is represented by a pixel area constituting the face, and this determination threshold is, for example, approximately 1/3 of the short side of the display monitor screen. Note that the determination threshold value may be appropriately changed according to the zoom magnification of the photographing lens 71.

  If the selected ON condition is satisfied, the CPU 101 makes an affirmative determination in step S13 and proceeds to step S14. If the selected ON condition is not satisfied, the CPU 101 makes a negative determination in step S13 and proceeds to step S17. When the above [6] is selected, the CPU 101 proceeds to step S14 when receiving a pressing operation signal of the projector button 14 while the monitor image is not projected.

  In step S14, the CPU 101 ends (not displays) the monitor image display on the display monitor 108, and proceeds to step S15. In step S15, the CPU 101 sends an instruction and monitor image data to the projection control circuit 64, starts monitor image projection, and proceeds to step S16.

  In step S <b> 16, the CPU 101 determines whether a condition for turning off the projector module 60 is satisfied. The off condition is set in advance by a menu selection operation, similarly to the on condition. As the off condition, any one of the following items is selected.

[1] When the release button 12 is fully pressed after the start of projection of the monitor image (when a photographing instruction is given) [2] When the release button 12 is pressed halfway after the projection of the monitor image is started [3] Monitor When a predetermined time (for example, 5 seconds) has elapsed after the start of image projection [4] When distance measurement information is equal to or smaller than a predetermined distance [5] When a face size extracted from a monitor image is equal to or larger than a predetermined size [6 ] When the projection is turned off

  The distance measurement information of [4] uses the latest focus adjustment information obtained after the projection of the monitor image is started. The face size of [5] is determined based on whether or not the pixel area constituting the face exceeds approximately 1/3 of the short side of the display monitor screen, as in the above-described determination of the ON condition. Note that the determination threshold value may be appropriately changed according to the zoom magnification of the photographing lens 71.

  If the selected off condition is satisfied, the CPU 101 makes an affirmative determination in step S16 and proceeds to step S17. If the selected off condition is not satisfied, the CPU 101 makes a negative determination in step S16 and returns to step S11. When the above [5] is selected, the CPU 101 proceeds to step S17 when receiving a pressing operation signal of the projector button 14 after the projection of the monitor image is started.

  In step S17, the CPU 101 sends an instruction to the projection control circuit 64, terminates the projection of the monitor image (non-projection), and proceeds to step S18. In step S18, the CPU 101 starts display of a monitor image on the display monitor 108 and returns to step S11.

  When the CPU 101 extracts the “face” from the monitor image, the CPU 101 displays the detected face on the monitor image being displayed on the display monitor 108 (or being projected from the projector module 60). FIG. 6 is a diagram illustrating a display screen (or projection screen) in this case. In FIG. 6, three faces are detected, and frames P1 to P3 surrounding each detected face (the extracted face) are overlaid on the monitor image.

  The CPU 101 further emphasizes the frame indicating the “face” as the focus adjustment target. In the example of FIG. 6, the frame P2 is emphasized in a different manner from the other frames. Emphasis is performed by increasing the brightness of the frame compared to other frames or by making the color different from other frames.

According to the embodiment described above, the following operational effects can be obtained.
(1) Since the projection time from the projector module 60 performed in the shooting mode is limited, power consumption can be reduced as compared with a case where no limitation is made.

(2) The electronic camera 10 projects the monitor images obtained by capturing the subject persons B, C, and D by the camera module 70 so that the subject persons B, C, and D can be observed from the projector module 60. Thereby, a monitor image can be provided to the subject persons B, C, and D that are located away from the electronic camera 10. Further, since the image is projected about 60 degrees below the shooting direction by the camera module 70, the subject person B, C, or D does not feel dazzling.

(3) Since the monitor image to which a frame indicating the shooting range by the camera module 70 is added is projected from the projector module 60, the subject person B, C, D can be notified of the shooting range.

(4) Since the monitor image in which the top and bottom (top and bottom) is inverted is projected from the projector module 60, it is possible to observe a projected image of a normal image that is easier to understand than the inverted image of the subject person B, C, or D.

(5) Since the monitor image in which the left and right sides are reversed is projected from the projector module 60, the subject person B, C, D can observe the projected image of the mirror image, and thus recognizes his / her position in the projected image compared to the case where it is not a mirror image. It's easy to do.

(6) Since the monitor image to which the frames P1 to P3 surrounding the face extracted from the monitor image are added is projected from the projector module 60, for example, when shooting a plurality of persons, all of them are included in the monitor image. It is easy to check whether or not it exists.

(7) Among the frames P1 to P3, since the frame P2 indicating the “face” targeted for focus adjustment is emphasized and projected, it is possible to determine which “face” is in focus on the subject person B, C and D can be notified.

(Modification 1)
Only the frame indicating the “face” detected from the monitor image may be projected by the projector module 60 (FIG. 7). In group photos, it is often important to include the “face” of everyone. In this case, it is easier to count only the frames P1 to P3 indicating the “face”.

(Modification 2)
The background portion of the monitor image projected by the projector module 60 may be subjected to enhancement processing and projected. By emphasizing the edge of the background portion, a projection image that makes it easy to distinguish between the case where the background is behind the person (FIG. 8) and the case where the background is not behind the person (FIG. 9) can be obtained. Persons B, C, and D (FIG. 4) serving as subjects can request the photographer A for desired framing while observing the projected image. The background portion may be determined using the distance measurement information.

(Modification 3)
You may make it raise the brightness | luminance of the projection image by the projector module 60 for a moment. By projecting with high brightness even for a moment, a monitor image can be provided to the persons B, C, and D that are subjects by the afterimage effect. This is particularly effective when the surroundings are bright and the projected image is difficult to understand at normal luminance, or when it is desired to reduce power consumption.

(Modification 4)
The monitor image projected by the projector module 60 may include a message “Please do not look at the projected image” or “Please do not look down”. It is possible to call attention to the subject person B, C, D so that the line of sight moved to the projected image is returned to the direction of the electronic camera 10.

(Modification 5)
The electronic camera 10 of the above embodiment starts the camera module 70 and the processing shown in FIG. 5 when receiving an operation signal for switching to the shooting mode. Instead, when an operation signal for switching to the shooting mode is received, a message “Do you want to automatically project from the projector?” Is displayed on the display monitor 108, and when a pressing operation signal from the OK button 20 is received, the camera module 70. And the processing shown in FIG. 5 may be started.

(Modification 6)
The orientation of the monitor image projected by the projector module 60 may be configured to be switchable so as to project in a direction suitable for observation by the photographer A. When the electronic camera 10 receives a pressing operation signal from the mode button 16 while the monitor image is being projected by the projector module 60, the electronic camera 10 displays a message “Do you want to reverse the projected image?” On the display monitor 108, and from the OK button 20. When the pressing operation signal is received, a monitor image that does not perform the inversion processing of (3) and (4) is projected from the projector module 60. Thereby, the photographer can observe a monitor image (projected image) larger than that displayed on the display monitor 108.

  On the other hand, when the monitor button that does not perform the reversal processing in (3) and (4) above is projected from the projector module 60 and receives a pressing operation signal from the mode button 16, the message “Reverse projection image?” Is displayed, and when a pressing operation signal from the OK button 20 is received, the monitor image subjected to the inversion processing of (3) and (4) is projected from the projector module 60. Thereby, the subject person B, C, D can observe the monitor image (projected image) again.

(Modification 7)
In the case of the electronic camera 10A with a projector that changes the relationship between the shooting direction by the camera module 70 and the projection direction by the projector module 60, the projector module 60 is turned on depending on whether the shooting direction and the projection direction are substantially parallel. The condition and the off condition for turning off the projector module 60 may be determined.

  10 and 11 are diagrams illustrating an electronic camera with a projector 10A according to Modification 7. FIG. 10 is a diagram illustrating the storage state, and FIG. 11 is a diagram illustrating the use state. In FIG. 10, a camera module 70 is accommodated in the lens unit 100 of the electronic camera 10A, and a projector module 60 is accommodated in the main body 200 of the electronic camera 10A. The lens unit 100 is rotatably supported from the main body 200 by a rotation mechanism (not shown). Thereby, the direction of the lens unit 100 (the shooting direction AxC by the camera module 70) is freely rotatable in the left and right arrow directions from the storage position shown in FIG. FIG. 11 is a diagram illustrating a state in which the lens unit 100 of the electronic camera 10A is rotated leftward from the state of FIG. 10 and 11, the projection direction by the projector module 60 is represented by AxP.

The electronic camera 10A according to the modified example 7 adds the following items as the on condition determined in step S13.
[7] When any one of the above [1] to [3] is satisfied and the shooting direction AxC and the projection direction AxP are not substantially parallel (for example, the crossing angle is 60 degrees or more)

In addition, the electronic camera 10A according to the modified example 7 adds the following items as an off condition determined in step S16.
[7] When the shooting direction AxC and the projection direction AxP are substantially parallel (for example, the intersection angle is less than 60 degrees).

  According to the modified example 7, it is possible to prevent projection light from being emitted toward the subject person B, C, D.

  In the above-described embodiment, the example in which the monitor image captured before the shooting instruction is projected from the projector module 60 has been described. However, the captured image may be projected from the projector module 60 after shooting.

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

It is a front view of the electronic camera with a projector by one embodiment of this invention. It is a rear view of the electronic camera of FIG. It is a block diagram explaining the circuit structure of the electronic camera of FIG. It is a figure which illustrates the scene where an electronic camera projects a monitor image. It is a flowchart explaining the flow of the monitor image projection process which CPU performs. It is a figure which illustrates the display which shows the detected face. It is a figure which illustrates projection of only the frame which shows a face. It is a figure which illustrates the projection which emphasizes the edge of a background part. It is a figure which illustrates the projection which emphasizes the edge of a background part. It is a figure explaining the electronic camera with a projector by the modification 7. FIG. It is a figure explaining the electronic camera with a projector by the modification 7. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Camera with projector 60 ... Projector module 70 ... Camera module 101 ... CPU
108: Display monitor 109: Operation member

Claims (14)

A projection unit;
An imaging unit;
Detecting means for detecting a region indicating a face from the subject image acquired by the imaging unit;
Control means for starting projection of the subject image from the projection unit when a face area is detected by the detection means;
An operation member that emits a first signal instructing the start of imaging and a second signal before instructing to start the imaging ,
The control unit is configured to start projecting the subject image from the projection unit when a face area is detected by the detection unit and the second signal is generated from the operation member. . A projection unit;
An imaging unit;
Detecting means for detecting a region indicating a face from the subject image acquired by the imaging unit;
Control means for starting projection of the subject image from the projection unit when a face area is detected by the detection means;
Comparison means for comparing the image acquired by the imaging unit with the reference data;
Identification means for identifying a specific person based on a comparison result by the comparison means,
The control unit causes the projection unit to start projecting the subject image when a face region is detected by the detection unit and the identification unit identifies a specific person with respect to the face region. With camera. The camera with a projector according to claim 1 or 2 ,
It further comprises distance measuring means for detecting distance information to the subject,
The camera with a projector further characterized by starting projection of the subject image from the projection unit when the distance information detected by the distance measuring unit is equal to or greater than a predetermined distance. The camera with a projector according to claim 1 or 2 ,
The camera with a projector further characterized by starting projection of the subject image from the projection unit when the size of the face area detected by the detection unit is a predetermined value or less. The camera with a projector according to claim 1 or 2 ,
The camera with a projector further starts projecting the subject image from the projection unit when a projection direction by the projection unit and a photographing direction by the imaging unit are not substantially parallel. The camera with a projector according to claim 1 ,
The control unit is configured to stop the projection by the projection unit when the second signal is generated from the operation member after the projection by the projection unit is started. The camera with a projector according to claim 2 ,
An operation member for emitting a first signal for instructing start of shooting and a second signal before instructing to start shooting;
The control unit is configured to stop projection by the projection unit when the first signal is issued from the operation member after the projection by the projection unit is started. The camera with a projector according to claim 1 or 2 ,
The camera with a projector, wherein the control unit stops the projection by the projection unit when a predetermined time has elapsed after the projection by the projection unit is started. The camera with a projector according to claim 3 ,
The control unit is configured to stop projection by the projection unit when the distance information detected by the ranging unit is less than a predetermined distance after the projection by the projection unit is started. The camera with a projector according to claim 4 ,
The camera with a projector, wherein after starting projection by the projection unit, the control unit stops projection by the projection unit when the size of the face area detected by the detection unit is larger than a predetermined value. The camera with a projector according to claim 5 ,
The control unit stops the projection by the projection unit when the projection direction by the projection unit and the photographing direction by the imaging unit become substantially parallel after starting projection by the projection unit. . An imaging unit for acquiring a subject image;
A projection unit that projects an image showing the subject imaged by the imaging unit;
Detecting means for detecting a region indicating a face from the subject image acquired by the imaging unit;
And a control unit that starts projection of the subject image from the projection unit when a face area is detected by the detection unit . The camera with a projector according to claim 12,
The camera with a projector, wherein the projection unit projects the image onto a ground surface or a floor surface between the imaging unit and the subject. The camera with a projector according to claim 12 or 13,
A display unit for displaying the image;
The projector-equipped camera according to claim 1, wherein the projection unit projects an image that is inverted horizontally and vertically with respect to the image displayed by the display unit.

Images