JP2009157175A - Digital camera with projector function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital camera with a projector function which is capable of observing an image in an erected state from various directions by easily setting the angle of a projection image to a desired angle. <P>SOLUTION: A digital camera 1 includes: an imaging unit 10 which images a subject image formed by a photographic optical system 100 by an image sensor 101; a projection unit 20 which displays the projection image based on image data on an image forming element 224 and projects the projection image by a projection optical system; an angle input operation part 91 through which the rotation angle of the projection image is specified by a user; a first image adjusting means 60 which adjusts the image data so that the image may be placed within a circular display area having a diameter smaller than or equal to the length of the short side of a rectangular display area; and a display control part 60 which rotates a first image by the image data adjusted by the first image adjusting means 60 by the rotation angle specified by the angle input operation part 91 and displays the first image on the image forming element 224. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a digital camera with a projector function.

  Conventionally, a digital camera provided with a projector module is known (see, for example, Patent Document 1).

JP 2005-250392 A

  By the way, when viewing a projected image with multiple people outdoors, it is not always possible to have an appropriate wall to be a screen, and it is assumed that the camera is projected by hand on the ground. The In some cases, an image is projected on a floor or a desk in a seated state and surrounded. Thus, when a plurality of people surround and appreciate the projected image, the inclination of the image differs depending on the viewer, and the projected image may be reversed.

  In such a case, it is difficult for the other person to hold the camera at an easy-to-see angle even if the camera is rotated to establish an image. Further, when the camera is turned upside down to project it upside down, the operation buttons and the like are turned upside down, which makes it difficult to operate.

According to a first aspect of the present invention, a photographing unit for picking up an image of a subject formed by a photographing optical system with an image pickup element, a projection image based on the image data are displayed on the image forming element, and the projection image is projected into the projection optical system. This is applied to a digital camera with a projector function that includes a projection unit that projects by a system, and an angle input operation unit that allows a user to specify a rotation angle of a projection image, and a diameter that is equal to or less than the length of a short side of a rectangular display area. A first image adjusting unit that adjusts the image data and a first image based on the image data that has been adjusted by the first image adjusting unit so as to be within the circular display area of the image. And a display control unit that rotates the rotation angle and displays the image on the image forming element.
According to a second aspect of the present invention, in the digital camera with a projector function according to the first aspect, the image data is adjusted so as to cut out only the image in the circular display area.
According to a third aspect of the present invention, in the digital camera with a projector function according to the first aspect, the image data is adjusted so that the entire projection image is within the circular display area.
According to a fourth aspect of the present invention, in the digital camera with a projector function according to the second or third aspect, the second image adjusting means adjusts the image data so that the entire projection image is within the rectangular display area at the rotation angle. The image data adjusted by the second image adjusting means instead of the first image after the first image based on the image data adjusted by the first image adjusting means is displayed on the image forming element. The second image is displayed.
According to a fifth aspect of the present invention, a photographing unit for picking up a subject image formed by a photographing optical system with an image pickup device, a projection image based on the image data are displayed on the image forming device, and the projection image is projected into the projection optical system. This is applied to a digital camera with a projector function including a projection unit for projecting by a system, and an angle input operation unit for a user to specify a rotation angle of a projection image, and the whole projection image fits in a rectangular display area at the rotation angle. The image adjusting means for adjusting the image data as described above, and a rotation image set in advance for easy angle recognition are rotated by the rotation angle specified by the angle input operation unit and displayed on the image forming element, and then the rotation image is displayed. A display control unit that displays an image based on the image data adjusted by the image adjustment unit on the image forming element is provided.
According to a sixth aspect of the present invention, in the digital camera with a projector function according to any one of the first to fifth aspects, a plurality of angle indicators indicating a plurality of angles and an indicator indicator indicating an angle index having the same angle as the rotation angle Are further displayed on the image forming element.
A seventh aspect of the invention is a digital camera with a projector function according to any one of the first to sixth aspects, further comprising a storage unit that stores a plurality of angles designated by the angle input operation unit.
According to an eighth aspect of the present invention, in the digital camera with a projector function according to any one of the first to seventh aspects, the rectangular display area includes a plurality of divided display areas each displaying an image obtained by reducing the projection image. Thus, the rotation angle of each image in the plurality of divided display areas is designated by the angle input operation unit.
According to a ninth aspect of the present invention, in the digital camera with a projector function according to any one of the first to eighth aspects, a monitor image that is the same image as the projection image and a plurality of monitor angles indicating a plurality of angles A display monitor is provided that displays an index and a monitor instruction mark that rotates together with the monitor image and indicates the monitor angle index having the same angle as the rotation angle of the monitor image.
A tenth aspect of the present invention is the digital camera with a projector function according to any one of the first to ninth aspects, wherein the angle input operation unit is a rotation operation unit that can be rotated to an arbitrary rotation angle, The image is rotated according to the rotation angle of the operation unit.
According to an eleventh aspect of the present invention, in the digital camera with a projector function according to the ninth aspect, a display monitor for displaying a monitor image that is the same image as the projection image, and a transparent touch panel provided on the display monitor are provided. The rotation angle is designated by touching the touch panel.
According to a twelfth aspect of the present invention, a photographing unit for picking up a subject image formed by a photographing optical system with an image pickup element, a projection image based on the image data are displayed on the image forming element, and the projection image is projected into the projection optical system. First applied to a digital camera with a projector function including a projection unit for projecting by a system, and adjusting image data so that an image fits within a circular display area having a diameter equal to or less than the length of the short side of the rectangular display area An image forming unit, an operation unit for instructing rotation and stop of the projection image by a user operation, and a first image based on image data adjusted by the first image adjustment unit by a rotation instruction from the operation unit. A first display control unit that rotates and displays on the element and stops the rotation of the first image in response to a stop instruction from the operation unit, and the same angle as the angle of the first image when the entire projection image is stopped The second image adjusting unit that adjusts the image data so that it is within the rectangular display area, and after the rotation of the first image is stopped, the second image adjusting unit is used instead of the first image. And a second display control unit that displays a second image based on the image data on the image forming element.

  According to the present invention, the angle of the projection image can be easily set to a desired angle, and an upright image can be observed from various directions.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.
-First embodiment-
FIG. 1 is a diagram showing an embodiment of a digital camera with a projector function according to the present invention. 1A and 1B are views showing the external appearance of the digital camera 1, wherein FIG. 1A shows the front side of the digital camera 1, and FIG. 1B shows the back side.

  As shown in FIG. 1A, a photographing unit 10 and a projector unit 20 are provided in the housing of the digital camera 1. A subject image formed by the photographing optical system 100 of the photographing unit 10 is picked up by the image pickup device 101. The projection unit 20 is disposed on the left side of the photographing unit 10 in the figure, and the projection light is emitted toward the front of the camera from a projection window 20a provided on the front surface of the housing, and projected onto a screen, a wall, a floor, and the like.

  As shown in FIG. 1B, a liquid crystal monitor 12, a PJ button 111, a menu button 112, a delete button 113, a rotary multi selector 114, and a mode switching button 115 are arranged on the back side of the digital camera 1. A shutter button 11, a zoom lever 13 for performing a zooming operation, and a power switch 14 are provided on the upper surface of the camera. Although not shown, a touch panel is provided on the surface of the liquid crystal monitor 12, and various input operations can be performed by touching the surface of the liquid crystal monitor 12.

  The PJ button 111 is an operation button for switching between a camera shooting state and a projector state (hereinafter referred to as PJ mode). The menu button 112 is an operation button for displaying a menu screen on the liquid crystal monitor 12, and a menu screen corresponding to the mode state at the time of operation is displayed on the liquid crystal monitor 12. The delete button 113 is an operation button for instructing the image deletion on the liquid crystal monitor 12 in a playback mode.

  The rotary multi-selector 114 includes a central operation unit 114a and a rotation unit 114b. When selecting an item or image displayed on the menu screen, the selection is made by rotating the rotation unit 114b and pressing the central operation unit 114a. The mode switching button 115 is an operation button for switching between a photographing mode for performing camera photographing and a reproduction mode for reproducing an image stored in a memory card MC (described later) or a storage unit 94 built in the camera.

  FIG. 2 is a diagram showing a configuration of the projector unit 20, and (b) is a cross-sectional view taken along line A1-A1 of (a). The projector unit 20 includes a light source 221 such as a high-intensity LED, a condenser lens 222, a polarizing beam splitter 223, a liquid crystal panel 224, a projection lens 225, a bending prism 228, and a case 226 that accommodates these. ing. A heat radiation block 227 is provided in close contact with the light source 221. Although a reflective liquid crystal panel such as LCOS is used for the liquid crystal panel 224, a transmissive liquid crystal panel may be used.

  The condensing lens 222 makes the light from the light source 221 substantially parallel and enters the polarization beam splitter 223. Of the light incident on the polarizing beam splitter 223, the P-polarized light passes through the polarizing beam splitter 223 and illuminates the liquid crystal panel 224. The liquid crystal panel 224 includes a plurality of pixels on which red, green, and blue filters are formed, and is driven to generate a color image.

  When the light transmitted through the liquid crystal layer of the liquid crystal panel 224 is incident on the liquid crystal panel 224, the light travels through the liquid crystal layer, is reflected by the reflective surface of the liquid crystal panel 224, and then travels in the reverse direction through the liquid crystal layer. The light is emitted from 224 and incident again on the polarizing beam splitter 223. Since the liquid crystal layer to which the voltage is applied functions as a phase plate, the light incident on the polarization beam splitter 223 is a mixed light of modulated light that is S-polarized light and unmodulated light that is P-polarized light. The polarization beam splitter 223 reflects only the modulated light that is the S-polarized component of the re-incident light beam at the polarization separation unit. The reflected modulated light is emitted from the projection window 20a to the front of the camera via the projection lens 225 and the bending prism 228.

  FIG. 3 is a block diagram of the digital camera 1. The digital camera 1 includes an image processing unit 60, an operation unit 91, a CPU 92, a video output terminal 93, a storage, in addition to the photographing unit 10, projector unit 20, liquid crystal monitor 12, light source 221 of the projector unit 20, and liquid crystal panel 224. Unit 94, touch panel 95, position detection unit 96, memory card MC, and the like.

  The operation unit 91 includes the operation buttons 111 to 113, the rotary multi selector 114, the shutter button 11, the zoom lever 13, and the power switch 14 described above. The image processing unit 60 includes a signal conversion / processing circuit 61, a compression / decompression circuit 62, a monitor display circuit 63, and a panel display circuit 64. When the touch panel 95 provided on the surface of the liquid crystal monitor 12 is touched with a finger or the like, the touch position is detected by the position detection unit 96. The detected position information is input to the CPU 92.

  The storage unit 94 includes a buffer memory and a working memory of the CPU 92. From the video output terminal 93, image signals of the projected image, the captured image and the reproduced image are output. For example, by connecting a display monitor to the video output terminal 93, the projected image, the captured image and the reproduced image are displayed on the display monitor. Can be displayed.

  The light beam that has passed through the photographing lens 100 of the photographing unit 10 is received by the image sensor 101 and subjected to photoelectric conversion. The photoelectric conversion output of the image sensor 101 is A / D converted by the signal conversion / processing circuit 61 of the image processing unit 60 and subjected to various image processing to generate image data. The image data is compressed by the compression / expansion circuit 62 and recorded on the memory card MC which is an image recording medium.

  When the camera is set to the playback mode, a display image based on the image data recorded on the memory card MC can be displayed on the liquid crystal monitor 12. In this case, image data to be displayed is read from the memory card MC, decompressed by the compression / expansion circuit 62, and sent to the monitor display circuit 63 via the signal conversion / processing circuit 61. The monitor display circuit 63 displays the input image on the liquid crystal monitor 12.

  When the camera is set to the shooting mode, an image repeatedly captured by the image sensor 101 is displayed on the liquid crystal monitor 12 as a moving image. In this way, a moving image that is repeatedly imaged is called a through image, and the photographer can determine the composition while viewing the through image. The digital camera 1 also has a moving image shooting mode, and an image repeatedly captured by the image sensor 101 can be stored in the memory card MC as a moving image.

  In the PJ mode, a projection image based on the image data recorded on the memory card MC can be projected by the projector unit 20. In this case, image data to be projected is read from the memory card MC, decompressed by the compression / decompression circuit 62, and sent to the panel display circuit 64 via the signal conversion / processing circuit 61. The panel display circuit 64 displays the input image data on the liquid crystal panel 224. When the light source 221 is turned on in this state, the image displayed on the liquid crystal panel 224 is read as a projection image and projected from the projection window 20a.

[Rotation of projected image]
Next, the rotation operation of the projection image in the PJ mode will be described. First, when the PJ button 111 in FIG. 1B is operated, the camera enters a PJ mode in which an image is projected, and a predetermined image is projected by the projector unit 20. The predetermined image is an image stored in advance in the camera, but may be created from a desired image by the user. The image rotation operation in the present embodiment is used, for example, when an image is projected onto a floor or the like as described above, and the projected image is surrounded by a plurality of images.

  Originally, when projecting an image on a screen, a wall, or the like, a vertically long image may be projected in a horizontal direction rotated by 90 degrees, and thus a projector often has a function of rotating an image by 90 degrees. However, in the case of observing an image surrounded by a vehicle seat as described above, there are problems as described above, and it is preferable that the image can be rotated at a finer angle. Therefore, the digital camera 1 according to the present embodiment includes a normal projection mode in which the image can be rotated every 90 degrees and a free rotation projection mode in which the image can be rotated in smaller increments.

  As a method of switching between the normal projection mode and the free rotation projection mode, the following two types of methods can be considered. In the first switching method, the normal projection mode is set in the initial state, and the menu screen is displayed on the liquid crystal monitor 12 to change from the normal projection mode to the free rotation projection mode, and from the free rotation projection mode to the normal projection mode. Switch to. In this case, as shown in FIGS. 4 and 5, the operation function of the rotary multi selector 114 is switched between the normal projection mode and the free rotation projection mode. The timing of switching may be set to the free rotation projection mode on the menu screen in advance before entering the PJ mode, or the menu screen may be called at an arbitrary time after entering the PJ mode to enter the free rotation projection mode. You can switch to.

  FIG. 4 is a diagram for explaining an operation function of the rotary multi selector 114 in the normal projection mode. In the normal projection mode, the rotary multi-selector 114 is assigned with the forward and reverse feeds of the projection image, the 90 ° rotation and 180 ° rotation of the image, and the reset function for returning the rotated image to the original upright state. . When the right side portion indicated by the symbol B of the rotating unit 114b of the rotary multi selector 114 is pressed briefly, the projected image is frame-adjusted. On the other hand, when the portion indicated by the symbol D of the rotating portion 114b is pressed briefly, frame advance in the reverse direction is performed.

  Regarding the rotation of the image, if the part indicated by the symbol A of the rotation unit 114b is operated for a long time, the projection image is rotated 90 degrees. The rotation direction may be clockwise or counterclockwise, and is assumed to be set counterclockwise here. If it is desired to further rotate 90 degrees, the long press operation may be once canceled and the long press operation may be performed again. Here, the rotation of the projection image is performed by rotating the image displayed on the liquid crystal panel 224 of the projector unit 20. When a horizontally long image is rotated 90 degrees, a vertically long image is obtained. In this case, the image is automatically reduced and displayed so that the entire vertically long image is displayed on the liquid crystal panel 224. Note that an image similar to the projected image is also displayed on the liquid crystal monitor 12, and the display image is rotated in the same manner as the projected image. Further, as will be described later, the rotation angle may be displayed numerically on the liquid crystal monitor 12.

  FIG. 5 is a diagram for explaining an operation function of the rotary multi selector 114 in the free rotation projection mode. In the free rotation projection mode, an operation function similar to that in the normal projection mode shown in FIG. 5A is provided, and an operation function unique to the free rotation projection mode shown in FIG. The operation functions in FIG. 5A are the same as those in FIG. In FIG. 5B, when the rotation unit 114b is pressed and rotated counterclockwise, the projection image also rotates counterclockwise in small increments. Conversely, when the rotation unit 114b is pressed and rotated clockwise, the rotation is rotated. In response to this, the projected image also rotates clockwise in small increments. Here, although it is considered that the rotation is performed in increments of 5 degrees, it may be arbitrarily rotated. Here, as shown in FIG. 5 (a), the same operation as in the normal projection mode is possible. For example, the 90 ° rotation of FIG. 5 (a), which is also possible with the operation of FIG. 5 (b), is possible. The function of rotating 180 degrees may be omitted.

  In the first switching method described above, the menu screen is called and switched. However, in the second switching method, the normal projection mode and the free rotation projection mode may be switched depending on the operation of the rotary multi selector 114. good. Specifically, the menu operation is omitted from the above-described operation. That is, the operation in the normal projection mode is performed by performing the operation shown in FIG. 5A, and the operation in the free rotation projection mode is performed by performing the operation in FIG. 5B.

  Next, the form of the projected image during the rotation operation will be described. FIG. 6 is a flowchart for explaining the procedure for rotating the projection image, and the program for executing the processing of this flowchart is executed by the CPU 92 in FIG. When the camera is set to the free rotation projection mode, the process of FIG. 6 is started. In step S1, it is determined whether or not the rotary multi selector 114 has been operated. If it is determined that there is an operation (yes), step S2 is performed. Proceed to

  In step S2, the projection image is changed to an image for rotation. FIG. 7A is a diagram showing a projected image before step S2 is executed, and FIG. 7B is a diagram showing an example of a rotation image. When the rotary multi selector 114 is operated in the free rotation projection mode, the projection image is switched from the state shown in FIG. 7A to the rotation image as shown in FIG. 7B. In FIG. 7B, only the image 30A included in the circular area centered on the screen center S is projected. The diameter of the circular area is set to be approximately equal to or less than the length of the short side of the rectangular projection area 31. The rectangular projection area 31 corresponds to the rectangular display area of the liquid crystal panel 224 (see FIG. 2) that displays an image, and the circular area corresponds to the circular display area in the rectangular display area. That is, only the image 30A is displayed on the liquid crystal panel 224, and the hatched image of the surrounding area 30B is not displayed.

  In FIG. 7 (b), indicators 32 indicating angles are displayed at equal intervals around a circular region, and black circle indicators 33 indicating angles of 0 degrees, 90 degrees, 180 degrees, and 270 degrees are also displayed. In the example shown in FIG. 7B, the index 33 on the right side indicates a position at a rotation angle of 0 degrees, and the indices 32 are displayed at intervals of 5 degrees. The rotation angle index 34 indicates the rotation angle at the time of rotation projection. When a normal upright image is projected as shown in FIG. 7B, the rotation angle index 34 is an index of 0 degrees. It is displayed at position 33.

  An image similar to that shown in FIG. 7B is also displayed on the liquid crystal monitor 12 of the camera 1. FIG. 8 shows an example of an image displayed on the liquid crystal monitor 12. An image 30A and indices 32, 33, and 34 similar to the projection image are displayed, and the frame number of the image and the rotation angle of the image are displayed. Signs 121 and 122 indicated by numerals are displayed. Of course, the signs 121 and 122 may be displayed on the projected image.

  In step S3, the image is rotated according to the operation of the rotary multi selector 114. FIG. 9 shows a projected image when the upper part indicated by reference symbol A of the rotating portion 114b of the rotary multi selector 114 shown in FIG. When the portion indicated by the symbol A is pressed for a long time in the state shown in FIG. 7A, the image for rotation is projected as shown in FIG. 7B immediately after the operation, and when the predetermined time elapses, the state shown in FIG. An image as shown in FIG. The image 30A is projected in a state rotated 90 degrees counterclockwise. The indexes 32 and 33 do not rotate, and the rotation angle index 34 rotates with the image 30A.

  Therefore, the rotation angle index 34 is displayed at the position of the index 33 indicating 90 degrees, and it can be easily recognized from the rotation angle index 34 that the image 30A is rotated 90 degrees. If it is desired to further rotate by 90 degrees, the long press operation may be performed again after releasing the long press once. Then, the image is switched as shown in FIG. 9B, and the image 30A is further rotated 90 degrees and is rotated 180 degrees with respect to the original image. That is, an image upside down is projected.

  Returning to the flowchart of FIG. 6, when the process of step S <b> 3 is completed, the process proceeds to step S <b> 4 to determine whether or not the operation of the rotary multi selector 114 is released. If it is determined in step S4 that the release has been made, the process proceeds to step S5. If not released, the process returns to step S3 to continue the image rotation operation. If the process proceeds to step S5, it is determined whether or not a predetermined time Δt has elapsed since the operation was released. If it is determined that the predetermined time Δt has elapsed, the process proceeds to step S6, and the rotation image shown in FIG. 9B is switched to the projection image shown in FIG. 9C. That is, the indicators 32 to 34 are not displayed, and the entire image is projected instead of the circular region image 30A. Next, in step S7, it is determined whether or not the mode has been switched from the free rotation projection mode to the normal projection mode. If a negative determination is made, the process returns to step S1, and if an affirmative determination is made, a series of image rotation processing ends.

  In the above-described processing, even if the operation is canceled, the rotation image is not switched to the projection image until a predetermined time Δt has elapsed. This is to prevent the image from changing rapidly as shown in FIG. 9 (b) → FIG. 9 (c) → FIG. 9 (b) when the operation is performed again immediately after the operation is released (<Δt). is there.

  By the way, in the case shown in FIG. 9C, since the image is rotated by 180 degrees, the entire rotated image can be displayed on the entire display area of the liquid crystal panel 224 of the projector unit 20, and is displayed upside down. The entire image can be projected. However, as shown in FIG. 9B, when the image is rotated by 90 degrees, the entire image becomes vertically long, and it becomes impossible to display the entire image on the liquid crystal panel 224 at the same magnification. In such a case, the image may be projected in the form shown in FIG.

  In the example shown in FIG. 10A, in the horizontally long rectangular projection area 31, only the image 30A in the circular area is displayed, and the other projection areas 30B are not displayed. In the example shown in FIG. 10B, only the image 30A that fits in the projection area 31 is displayed, and other hatched areas (left and right areas) are not displayed. In the example illustrated in FIG. 10C, the image is reduced and displayed on the liquid crystal panel 224 so that the entire vertically long image rotated by 90 degrees fits in the projection region 31, and the entire reduced image is projected. In the case of reduced projection as shown in FIG. 10C, if the entire image is enlarged by moving the camera 1 away, a projected image having the same size as the upright projected image shown in FIG. Is easily obtained. In the case of a camera having a zoom optical system, the size of the projected image can be made the same as that of the same size display by automatically performing a zoom operation.

  FIG. 11 is a diagram for explaining a projected image when the rotating unit 114b of the rotary multi-selector 114 is rotated counterclockwise as shown in FIG. 5B. In the example shown in FIG. 11A, the image 30A is rotated 45 degrees. When a predetermined time Δt elapses after the operation is released in this state, the projection image is switched to a projection image as shown in FIG. 11B or 11C. FIG. 11B shows a case where only the image 30A in the circular area is projected, as in the case of FIG. On the other hand, in FIG. 11C, the image is reduced and displayed so that the entire image inclined obliquely is displayed on the liquid crystal panel 224. As a result, the entire obliquely inclined projection image is projected onto the projection area 31. Note that the hatched region 30B in FIGS. 11B and 11C is a non-display region.

  The image for rotation is not limited to that shown in FIG. 7B described above, and various forms are possible. In the example shown in FIG. 12A, the central portion of the projection image is cut into a square shape to form a rotation image 30A. A non-display area indicated by reference numeral 30C is formed in the circular area. In the case of a zoomed-up image or the like, the image rotation state may be difficult to understand only with the image 30A in the circular area at the center of the image as shown in FIGS. 6 (a) and 12 (a). Therefore, as shown in FIG. 12B, the image may be displayed in a reduced size and the center portion thereof may be cut out. As a result, a wider range of image is projected, and the rotation state of the image is easily understood. In this case, depending on the reduction ratio, the top-to-bottom dimension of the image is smaller than the diameter of the circular region, so that a non-display region 30C is formed in the circular region, and the projected image is not circular but the image is cut off vertically.

  In the example shown in FIG. 12C, the image is reduced and projected so that the entire projection image is projected, that is, within the circular area. As a result, the image for rotation becomes a rectangular image. When the operation is released and a predetermined time Δt has elapsed, the image is enlarged by reducing the reduction rate to the range indicated by the broken line 35 where the entire rectangular image can be displayed. As a result, a display form similar to that shown in FIG. In the case of FIGS. 12A and 12B, the projected image after Δt may be a rectangular image as in the case of FIG.

  In the above-described example, the rotation image is formed using the projection image. However, a dedicated image whose rotation direction is easy to understand as shown in FIGS. 13A to 13C may be used as the rotation image. In FIG. 13A, a diagonal line 36 is displayed in the rectangular area 30A representing the image shape so that the orientation of the image can be easily understood. In FIG. 13B, instead of the diagonal line 36, a cross line 37 connecting the midpoints of opposite sides is displayed. In FIG. 13C, an arrow 38 indicating the top-and-bottom direction is displayed in the rectangular area 30A. In any case, since the pattern is simple, it is easy to recognize the direction of the image (that is, the rotation angle).

[Modification 1]
In the embodiment described above, the projection image is rotated by operating the rotary multi-selector 114 that is a rotation switch. However, instead of the rotary multi-selector 114, the image is operated by operating a cross key or a push button. The rotation may be performed. FIG. 14 is a diagram for explaining an example of an operation function when the cross key 40 is used. In the image projection mode, an operation function as shown in FIG.

  In the cross key 40, operation units 40a to 40d for performing input by a push operation are arranged in a cross shape, and a central operation unit 40e is provided in the center. When the operation unit 40a is long pressed, the image is rotated 90 degrees, and when the operation unit 40c is long pressed, the image is rotated 180 degrees. On the other hand, when the right operation unit 40b is pressed for a long time, the image is continuously rotated clockwise at intervals of 5 degrees. Conversely, when the left operation unit 40d is pressed and held, the image rotates counterclockwise at intervals of 5 degrees. In addition, what is necessary is just to short-press the operation part 40a, when resetting an image to the original upright state.

  Further, in the case of a configuration operated by a push button, for example, the deletion button 113 shown in FIG. 1B is used. In this case, when the mode is switched to the PJ mode, an operation function related to image rotation is assigned to the button 113. As an example, when the operation button 113 is pressed and held, the image is continuously rotated at intervals of 5 degrees, and when the push operation of the operation button 113 is stopped, the rotation of the image is stopped. As another example, when the operation button 113 is pushed, the image may be continuously rotated at intervals of 5 degrees, and when the operation button 113 is pushed again, the rotation may be stopped. In this operation method, it is only necessary to press the operation button 113, so that the operation method is easy to learn and the operation can be performed quickly. Of course, the rotation instruction function and the rotation stop function may be assigned to different operation buttons.

[Modification 2]
FIG. 15 is a diagram for explaining a second modification. In the above-described embodiment, the image is rotated by operating the rotary multi selector 114, the cross key 40, and the operation button 113. In the second modification, the touch panel provided on the surface of the liquid crystal monitor 12 is used. Rotation operation was performed using 95. First. As shown by the broken line, the touch panel 95 is touched in the order of the index finger 42 and the middle finger 43. Then, the middle finger 43 is rotated around the point P1 while the contact position of the index finger 42 is fixed at the point P1, and the contact position of the middle finger 43 is moved from the point P2 to the point P3. The movement of the middle finger 43 at this time may not be an arc centered on the point P1.

  By performing such a touch panel operation, the rotation angle of the image is set to an angle formed by a straight line connecting the points P1 and P2 and a straight line connecting the points P1 and P3. That is, the image is rotated clockwise by an angle θ around the center of the screen. In the reverse operation, that is, when the middle finger 43 is moved from the point P3 to the point P2 while the index finger 42 is fixed at the point P1, the image is rotated counterclockwise by the angle θ. If the operation of moving the middle finger 43 is performed a plurality of times, the image can be rotated more greatly.

  By enabling such a touch panel operation, the rotation of the image and the operation operation are almost the same, so that the operation method is easy to learn. Note that the touch panel may be operated using a finger other than the index finger and the middle finger. Although the image is rotated around the center of the screen here, the image may be rotated around the position (point P1) touched first. Further, the midpoint P4 between the points P1 and P2 may be set at the center of rotation.

[Modification 3]
In the third modification, the rotation angle can be stored. For example, if the image is rotated by operating the rotating unit 114b of the rotary multi selector 114 and a projected image as shown in FIG. 9C is projected after Δt, the central operating unit 114a of the rotary multi selector 114 is pushed. The operation is performed to store the rotation angle in the storage unit 94. And it becomes possible to memorize | store a several rotation angle by performing such operation in multiple times.

  For example, consider a case where a projected image is observed so as to be surrounded by six observers. For each observer, the image is rotated so that the projected image is almost upright, and the respective angles are stored. When storing five angles of 25 degrees, 50 degrees, 80 degrees, 150 degrees, and 200 degrees as rotation angles, the rotation section 114b is rotated and the rotation section 114b is rotated so that the rotation angle is 25 degrees. If an image inclined by 25 degrees is projected, the central operation unit 114a is pushed to store an angle of 25 degrees. Next, the rotating unit 114b is operated so that the rotation angle becomes 50 degrees, and the angle of 50 degrees is stored in the same procedure. This operation is also performed for 80 degrees, 150 degrees, and 200 degrees.

  For example, the function of rotating the image to the stored angle is assigned to the operation button 113. When the operation button 113 is pressed when the image is projected in an upright state, the image is rotated by an angle of 25 degrees. When the operation button 113 is further pressed in this state, the image is rotated to an angle of 50 degrees. That is, every time the operation button 113 is pressed, the rotation angle of the image changes cyclically such as 0, 25, 50, 80, 150, 200, 0, 25. And even if it is projected at any angle, it can return to an upright state by short-pressing the upper part of the rotation button 114b.

[Modification 4]
In the fourth modification, a plurality of images are projected at the same time, and the angle of each image can be adjusted according to a plurality of observers enclosing the images. FIG. 16 shows an example. The projection area 31 is divided into four divided areas 311 to 314, and images having different angles are projected for the divided areas 311 to 314, respectively. In the example of FIG. 16A, the image rotation angle is set to 0 degrees, 90 degrees, 180 degrees, and 270 degrees. Each of the projected images has an inclination suitable for viewing from the angled arrow.

  The rotation angle shown in FIG. 16A is an angle at the initial setting, and the rotation angle can be adjusted for each of the divided regions 311 to 314. In that case, by operating the portion of the rotating portion 114b provided with the symbols A to D provided in the rotary multi selector 114, the divided region whose setting is to be changed is selected. For example, the divided region 312 is selected by pressing the portion indicated by the symbol B.

  Next, the rotating unit 114b is rotated to rotate the image counterclockwise by 10 degrees. As a result, as shown in FIG. 16B, the rotation angle of the image of the divided region 312 is an image rotated by 190 degrees counterclockwise. In the example of FIG. 16B, the rotation angles of the other divided regions 313 and 314 are adjusted to 170 degrees and 280 degrees. By performing such adjustment, an upright image can be observed even if the position of the observer is not exactly 0, 90, 180, and 270 degrees. When the divided area 312 is selected, the image of the area may be projected onto the entire rectangular projection area 31 and returned to the projection state shown in FIG.

[Modification 5]
When projecting the camera 1 toward the screen, the projection area 31 becomes trapezoidal when projected obliquely with respect to the screen. Therefore, in a camera having a projector function, the angle of the camera is detected by an angle sensor or the like, and the trapezoidal distortion correction of the projection image is performed based on the detection result so that a rectangular projection image is projected. The same applies to the case where the image 30 is projected onto the floor 44 as shown in FIG. 17A, and distortion correction is performed according to the angle of the camera so that the projection region 31 that is the frame of the image 30 has a rectangular shape. It is corrected.

  However, when viewed from the floor 44 so as to look down vertically as indicated by the arrow F, the image region 31 looks rectangular, but when viewed from the direction of the angle α as the observer 45, the projection region 31 is It will appear trapezoidal as shown in FIG. Therefore, when an upright projection image is presented to the observer 45, trapezoidal correction is further performed in consideration of the angle α, and a rectangular projection area 31 as shown in FIG. To be observed from the person 45. In this case, the angle α with respect to the free rotation projection mode is input and set in advance on the menu screen. Assume that the angle α is constant regardless of the position of the observer. In addition, when projecting a plurality of projection images as shown in FIG. 16, trapezoidal correction may be performed according to each rotation angle.

As described above, in the present embodiment, the projection image can be freely rotated by designating a desired angle with the operation unit such as the rotary multi selector 114 or the cross key 40, so that the projection image is surrounded. Thus, even when there are a plurality of observers, an upright image can be presented to each observer with a simple operation without rotating the camera 1 itself.
Further, since the angle markers 32 and 33 and the indicator marks 34 indicating the angle markers 32 and 33 having the same angle as the rotation angle of the projection image 30A are projected, the rotation angle of the image is easy to understand. Furthermore, these indicators 32 and 33 and the sign 34 may be displayed together with an image on a display monitor.

  The image for rotation is cut out from the image for projection, and the size of the image for rotation (that is, the diameter of the circle circumscribing the image for rotation) is set to be equal to or less than the length of the short side of the rectangular projection region 31. It can be rotated without changing the size of the image, making it easier to see. Instead of cutting out the image, the entire image may be reduced so that the diagonal dimension is equal to or shorter than the length of the short side of the projection region 31. Furthermore, after the image is rotated, the entire projection image is reduced to the maximum size that can be projected while being rotated on the projection area 31, and the projection image is switched to that image, thereby projecting an easy-to-view image. can do. Further, by projecting a rotation image with easy angle recognition as shown in FIG. 13, the rotation operation is facilitated.

  In addition, the above description is an example to the last, and this invention is not limited to the said embodiment at all unless the characteristic of this invention is impaired.

It is a figure which shows the external appearance of the digital camera 1, (a) shows the front side of the digital camera 1, (b) shows the back side. It is a figure which shows the structure of the projector unit 20, (a) is sectional drawing seen from the front, (b) is A1-A1 sectional drawing. 1 is a block diagram of a digital camera 1. FIG. It is a figure explaining the operation function of the rotary multi selector 114 in normal projection mode. It is a figure explaining the operation function of the rotary multi selector 114 in free rotation projection mode, (a) shows the short press and long press operation of the rotation part 114b, (b) shows rotation operation. It is a flowchart explaining the procedure of rotation of a projection image. It is a figure explaining the change to the image for rotation, (a) shows the projection image before rotation operation, (b) shows the image for rotation immediately after rotation operation. 6 is a diagram illustrating an example of a display image displayed on the liquid crystal monitor 12. FIG. It is a figure explaining the change of the projection image by operation of the rotation part 114b, (a) is a case where a long press operation is performed once, (b) is a case where a long press operation is performed twice, (c). Indicates after the operation. It is a figure which shows the form of the projection image when predetermined time (DELTA) t passes. It is a figure which shows the form of the projection image when predetermined time (DELTA) t passes after rotating an image 45 degree | times, (a) shows the image for rotation, (b) and (c) are when the predetermined time (DELTA) t has passed. The form of the projected image is shown. It is a figure which shows the modification of the image for rotation. It is a figure which shows the other form of the image for rotation. It is a figure which shows the operation function at the time of using the cross key 40 instead of the rotary multi selector 114. FIG. It is a figure explaining rotation operation using the touch panel. It is a figure explaining the modification 4 which projects a some projection image, (a) shows the case of an initial setting, (b) shows the case where a rotation angle is adjusted, respectively. It is a figure explaining trapezoid correction.

Explanation of symbols

1: digital camera, 10: photographing unit, 12: liquid crystal monitor, 20: projector unit, 31: projection area, 32-34: index, 40: cross key, 40a-40d: operation unit, 40e: central operation unit, 91 : Operation unit, 92: CPU, 94: storage unit, 95: touch panel, 101: image sensor, 114: rotary multi selector, 114a: central operation unit, 114b: rotation unit, 311 to 314: divided area

Claims (12)

A photographing unit that captures an image of a subject formed by the photographing optical system with an image sensor;
In a digital camera with a projector function comprising a projection unit that displays a projection image based on image data on an image forming element and projects the projection image by a projection optical system,
An angle input operation unit for the user to specify the rotation angle of the projection image;
First image adjusting means for adjusting the image data so that the image fits within a circular display area having a diameter equal to or less than the length of the short side of the rectangular display area;
A display control unit that rotates the first image based on the image data adjusted by the first image adjusting unit by a rotation angle specified by the angle input operation unit and displays the first image on the image forming element. A digital camera with a projector function. The digital camera with a projector function according to claim 1,
The digital camera with a projector function, wherein the first image adjusting unit adjusts the image data so as to cut out only an image in the circular display area. The digital camera with a projector function according to claim 1,
The digital camera with a projector function, wherein the first image adjustment unit adjusts the image data so that the entire projection image is within the circular display area. The digital camera with a projector function according to claim 2 or 3,
A second image adjusting means for adjusting the image data so that the entire projection image is within the rectangular display area at the rotation angle;
The display control unit displays the first image based on the image data adjusted by the first image adjusting unit on the image forming element, and then uses the second image adjusting unit instead of the first image. A digital camera with a projector function, which displays a second image based on adjusted image data. A photographing unit that captures an image of a subject formed by the photographing optical system with an image sensor;
In a digital camera with a projector function comprising a projection unit that displays a projection image based on image data on an image forming element and projects the projection image by a projection optical system,
An angle input operation unit for the user to specify the rotation angle of the projection image;
Image adjusting means for adjusting the image data so that the entire projection image is within the rectangular display area at the rotation angle;
After rotating a preset angle-recognized image for easy rotation by the rotation angle designated by the angle input operation unit and displaying it on the image forming element, the image is adjusted by the image adjusting means instead of the image for rotation. A digital camera with a projector function, comprising: a display control unit that displays an image based on the image data on the image forming element. In the digital camera with a projector function according to any one of claims 1 to 5,
The display control unit further has a projector function, and further displays a plurality of angle indexes indicating a plurality of angles and an indicator indicating the angle index having the same angle as the rotation angle on the image forming element. Digital camera. In the digital camera with a projector function according to any one of claims 1 to 6,
A digital camera with a projector function, further comprising a storage unit for storing a plurality of angles designated by the angle input operation unit. In the digital camera with a projector function according to any one of claims 1 to 7,
The rectangular display area is composed of a plurality of divided display areas each displaying an image obtained by reducing the projection image,
The digital camera with a projector function, wherein the angle input operation unit specifies a rotation angle of each image in the plurality of divided display areas. In the digital camera with a projector function according to any one of claims 1 to 8,
The monitor image that is the same image as the projection image, a plurality of monitor angle indexes indicating a plurality of angles, and the monitor angle that rotates together with the monitor image and has the same angle as the rotation angle of the monitor image A digital camera with a projector function, comprising a display monitor for displaying a monitor instruction sign indicating an index. In the digital camera with a projector function according to any one of claims 1 to 9,
The angle input operation unit is a rotation operation unit that can be rotated at an arbitrary rotation angle,
The digital camera with a projector function, wherein the display control unit rotates an image according to a rotation angle of the rotation operation unit. The digital camera with a projector function according to claim 9,
A display monitor for displaying a monitor image that is the same image as the projection image;
A digital camera with a projector function, comprising: a transparent touch panel provided on the display monitor, wherein the rotation angle is specified by touching the touch panel. A photographing unit that captures an image of a subject formed by the photographing optical system with an image sensor;
In a digital camera with a projector function comprising a projection unit that displays a projection image based on image data on an image forming element and projects the projection image by a projection optical system,
First image adjusting means for adjusting the image data so that the image fits in a circular display area having a diameter equal to or less than the length of the short side of the rectangular display area;
An operation unit that instructs rotation and stop of the projection image by a user operation;
A first image based on the image data adjusted by the first image adjusting unit is rotated and displayed on the image forming element by a rotation instruction from the operation unit, and the first image is rotated by a stop instruction from the operation unit. A first display control unit to stop;
Second image adjusting means for adjusting the image data so that the entire projection image is within the rectangular display area at the same angle as the angle of the first image when the rotation is stopped;
Second display control for displaying, on the image forming element, a second image based on the image data adjusted by the second image adjusting means instead of the first image after the rotation of the first image is stopped. A digital camera with a projector function.

Images