JP2006174353A - Photographing apparatus and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology capable of positioning a plurality of images with high accuracy in carrying out photographing a plurality of times to compose the photographed images. <P>SOLUTION: A digital camera disclosed herein attaches a first marker image to a photographed image in carrying out photographing at first to acquire the photographed image, calculates a distance between a particular point in a background image and the first marker image in the photographed image acquired by the first photographing, attaches a second marker image at a position the distance of which from the particular point of the background image is equal to the calculated distance in an image acquired at second photographing, displays the photographed image including the first marker image and the image including the second marker image photographed by second photographing on a display screen, determines whether the position of the first marker image is coincident with the position of the second marker image of the image photographed by the second photographing, and informs a user about it by means of a buzzer tone when they are coincident. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a photographing apparatus and a program having a function of combining photographed images.

Conventionally, a technique for synthesizing a first shot image and a second shot image is known in order to easily obtain a two-shot image even when it is difficult to ask a person to shoot or when there is no person nearby. (For example, refer to Patent Document 1).
JP 2003-189160 A

  However, when performing the second shooting, the photographer looks at the subject of the first shot image and the second shot while observing the overlap between the first shot image displayed on the LCD device and the background of the second shot image. Since the camera angle was adjusted so that the subject to be photographed was lined up and the background of the first shot image and the background of the second shot were substantially matched, In many cases, they overlapped, or on the contrary, they were too far apart, resulting in a sense of discomfort.

  An object of the present invention is to perform alignment of a plurality of images with high accuracy when a plurality of shots are taken and a shot image is synthesized.

In order to solve the above-mentioned problem, the invention described in claim 1
A screen divided into at least two screens is displayed on the display screen for displaying an image to be photographed, a subject is placed on one screen, the first photographing is performed, and then a different subject is presented on the other screen. In the photographing apparatus that performs the second photographing by arranging and generates a composite image by combining the photographed images acquired by the first photographing and the second photographing,
First marker image adding means for adding a first marker image to the captured image when performing the first imaging to obtain a captured image;
The distance between the specific point of the background image in the captured image acquired by the first imaging and the first marker image is calculated, and the background image is specified in the image to be acquired in the second imaging. A second marker image adding means for adding a second marker image at a position where the distance from a point is the same as the calculated distance;
Display means for displaying on the display screen a captured image including the first marker image and an image including the second marker image to be captured by the second capturing;
Judgment means for judging whether the position of the first marker image in the photographed image acquired by the first photographing coincides with the position of the second marker image of the image to be photographed by the second photographing. When,
As a result of determination by the determination means, when it is determined that the position of the first marker image and the position of the second marker image match, a notification means for notifying that effect,
It is characterized by having.

The program of the invention described in claim 7 is:
A screen divided into at least two screens is displayed on the display screen for displaying an image to be photographed, a subject is placed on one screen, the first photographing is performed, and then a different subject is presented on the other screen. A computer for controlling a photographing device that performs a second photographing and synthesizes a photographed image obtained by the first photographing and the second photographing to generate a composite image;
A function of adding a first marker image in the photographed image when the first photograph is taken to obtain the photographed image;
The distance between the specific point of the background image in the captured image acquired by the first imaging and the first marker image is calculated, and the background image is specified in the image to be acquired in the second imaging. A function of adding a second marker image at a position where the distance from a point is the same as the calculated distance;
A function for displaying on the display screen a captured image including the first marker image and an image including the second marker image to be captured by the second capturing;
A function of determining whether or not a position of the first marker image in the photographed image acquired by the first photographing coincides with a position of the second marker image of the image to be photographed by the second photographing; ,
As a result of determination by the determination means, when it is determined that the position of the first marker image and the position of the second marker image match,
It is characterized by realizing.

  According to the first and seventh aspects of the present invention, the display screen for displaying an image to be photographed is displayed on a screen divided into at least two screens, and the subject is arranged on one of the screens. In a photographing apparatus that performs photographing, then places a different subject on the other screen, performs second photographing, and combines the photographed images obtained by the first photographing and the second photographing to generate a composite image. The first marker image is added to the photographed image when the first photograph is taken to obtain the photographed image, and the specific point of the background image and the first marker in the photographed image obtained by the first photography A distance from the image is calculated, a second marker image is added to a position in the image to be acquired in the second shooting at a position where the distance from the specific point of the background image is the same as the calculated distance, A captured image including the marker image of the second and the second Displaying an image comprising a second marker image to be photographed by the photographing on the display screen. Further, it is determined whether or not the position of the first marker image in the captured image acquired by the first imaging matches the position of the second marker image of the image to be captured by the second imaging. As a result, when it is determined that the position of the first marker image matches the position of the second marker image, the fact is notified.

  Therefore, the photographer can easily recognize whether or not there is a deviation in the position of the image to be photographed in the second photographing with respect to the photographed image photographed in the first photographing based on the position of the marker image. In addition, by aligning the two marker images, it is possible to easily align the two images. In addition, it is automatically determined whether or not the first and second marker images match, and if they match, the fact is notified, so the position of the background of the image to be shot in the second shooting It becomes easy to perform shooting at the time when the position of the first captured image matches the position of the background, and it is possible to obtain a composite image aligned with high accuracy.

  According to the second aspect of the present invention, the display colors of the first marker image and the second marker image are determined based on the brightness of the image when the first image is captured and the captured image is acquired. Therefore, it is possible to display a marker image that is easy for the photographer to view by displaying a black marker image when the background of the image to be photographed is bright and displaying a white marker image when the background is dark.

  According to the third aspect of the present invention, the apparatus includes a tilt sensor that detects the tilt state of the housing of the photographing device and outputs detection information, determines the orientation of the photographing device based on the detection information from the tilt sensor, The display screen is divided into at least two screens according to the determined orientation of the photographing device, so it can be combined regardless of whether the photographing device is set to landscape (the display screen is oriented horizontally) or the photographing device is held vertically. An image can be generated.

  According to the fourth aspect of the invention, there is provided split ratio setting means for setting a split ratio when the display screen is split into at least two screens, and at least two display screens at a ratio based on the set split ratio. Therefore, it is possible to obtain a composite image in which subjects are arranged in a balanced manner according to the number of photographers.

  According to the fifth aspect of the present invention, in each of the first shooting and the second shooting, the lens is moved so as to be focused on the screen set in advance as the subject is arranged. It is possible to focus on the subject of both the first photographing and the second photographing.

  According to the invention described in claim 6, since the laser is irradiated to the position corresponding to the division position of the screen in front of the photographing apparatus, the subject can know his / her standing position, and the subject is arranged in a balanced manner. It becomes possible to obtain the synthesized image.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
First, the configuration will be described.

  FIG. 1 is a block diagram showing a functional configuration of the digital camera 10. As shown in FIG. 1, the digital camera 10 includes a CPU 11, an input unit 12, a RAM 13, a transmission control unit 14, a display unit 15, an imaging unit 16, a recording unit 17, a recording medium driving unit 18, a laser irradiation unit 19, and a buzzer 20. The tilt sensor 21 and the like are provided, and each part is connected by a bus 22.

  The CPU 11 reads out the system program stored in the recording unit 17, develops it in a work area formed in the RAM 13, and controls each unit according to the system program. Further, the CPU 11 reads out various processing programs such as the two-shot shooting mode processing program stored in the recording unit 17 and develops them in the work area, and various kinds of processing including the two-shot shooting mode processing (see FIG. 3) described later. Execute the process.

  The input unit 12 includes a power switch, a shutter switch, various setting switches for shooting, a cursor switch, and the like, and outputs an operation signal corresponding to each switch operation to the CPU 11.

  The RAM 13 forms a work area for temporarily storing various programs executed by the CPU 11 and data related to these programs.

  The transmission control unit 14 is connected to an external electronic device such as a personal computer via a communication cable or the like, and controls transmission / reception of image data and the like. The connection with the external device may be a wireless connection such as infrared or wireless.

  The display unit 15 includes a monitor such as an LCD (Liquid Crystal Display), and displays an image to be photographed and a photographed photographed image on a display screen (liquid crystal finder) in accordance with an instruction of a display signal input from the CPU 11. indicate.

FIG. 2 is a diagram illustrating a detailed configuration of the imaging unit 16. Here, the imaging unit 16 will be described with reference to FIG.
The subject image that has passed through the lens (imaging lens) 21 is formed on a CCD (Charge Coupled Diode) 23 via a diaphragm mechanism 22. The lens 21 and the diaphragm mechanism 22 are moved by the optical system drive unit 24 for focusing, and the diaphragm amount is controlled so as to achieve appropriate exposure. For the movement of the lens 21 and the diaphragm mechanism 22, detection values detected by a sensor unit 25 including a distance measuring sensor and a light quantity sensor are output to the CPU 11 via the bus 22, and are calculated based on the detection values by the CPU 11. Driving is performed by outputting a signal indicating the amount of movement of the lens 21 and the amount of aperture of the aperture mechanism 22 to the optical system drive unit 24.

  When the subject is imaged on the CCD 23, charges corresponding to the amount of incident light are accumulated in the CCD 23, and the charges are sequentially read out by a drive pulse signal supplied from the drive circuit 26 and output to the analog processing circuit 27. The analog processing circuit 27 performs various processes such as color separation, gain adjustment, and white balance, and the processed signal is buffered as digital image data (hereinafter referred to as image data) via the A / D conversion circuit 28. 29.

  The image data stored in the buffer register 29 is converted into a luminance signal and a color difference signal by the signal processing circuit 30 based on a control signal from the CPU 11 and displayed on the display unit 15. Also, the image data processed in the signal processing circuit 30 is compressed in the compression / decompression circuit 31 on the basis of a control signal from the CPU 11 and is recorded in the captured image recording area 171 or the recording of the recording unit 17 shown in FIG. It is recorded on the medium 18a.

  Returning to FIG. 1, the recording unit 17 includes a non-volatile memory such as a flash memory, and various processes including a system program corresponding to the digital camera 10 and a two-shot shooting mode processing program that can be executed on the system program. Programs, application programs, data processed by these programs, and the like are recorded.

  The recording unit 17 has a captured image recording area 171 for recording captured image data.

  The recording medium driving unit 18 is a driving circuit for recording data on the mounted recording medium 18a and for reading and reproducing already recorded data. Various media such as SmartMedia (registered trademark), Memory Stick (registered trademark), CompactFlash (registered trademark), SD card, PC card, IC card, MO (magneto-optic) are used as the recording medium 18a to be mounted. The recording medium driving unit 18 corresponding to any one or a plurality of these various cards is provided.

The laser irradiation unit 19 irradiates an appropriate position or place in the field of view from the front of the digital camera 10 (for example, the ground at the foot of the subject person) and forms a visible reference mark at the irradiation position. Is for. When the laser beam irradiated to the laser irradiation unit 19 divides the display screen of the digital camera 10 into two left and right screens, and places a different person on each screen to shoot a composite image, the screen division position (screen division) It functions as a laser pointer that forms a visually observable guide mark that serves as a guide for the standing position of the subject at a position or place corresponding to the line (see FIGS. 4A and 4B) (see FIG. 6).
The laser irradiation unit 19 includes two irradiation units, a first laser unit 19a and a second laser unit 19b, and is provided on the front surface (the lens 21 side) of the digital camera 10.
When the digital camera 10 is held sideways, the first laser unit 19a projects the laser beam with a predetermined depression angle so that the optical axis L1 of the laser beam is directed downward (for example, the ground side). It is set (see FIG. 7). The term “landscape” refers to a direction in which the display screen is horizontally long when the digital camera 10 is held in a normal shooting posture. The reason why the optical axis L1 of the laser beam is directed downward is to prevent the laser beam from being accidentally irradiated to the human eye.
The second laser unit 19b projects the laser beam with a predetermined depression angle so that the optical axis of the laser beam is directed downward (for example, the ground side) when the digital camera 10 is held vertically. Is set. The portrait orientation is the orientation in which the display screen is vertically long during shooting.
Whether the first laser unit 19a or the second laser unit 19b is driven is controlled by an instruction from the CPU 11 according to the tilt state (horizontal or vertical) of the digital camera 10 detected.

The buzzer 20 sounds in response to an instruction from the CPU 11.
The tilt sensor 21 detects the tilt state of the housing of the digital camera 10 as detection information, and outputs a first tilt sensor 21a and a second tilt sensor that output an output voltage to the CPU 11 according to the tilt state of the housing of the digital camera 10. 21b.
The first tilt sensor 21a corresponds to the tilt sensor in the present invention, detects the tilt state of the housing of the digital camera 10, and displays the display screen of the digital camera 10 according to the tilt state as shown in FIG. The screen is divided into left and right two screens by any one of methods (b), and the first laser unit 19a or the second laser unit 19b is driven in accordance with the display screen dividing method. The tilted state of the housing of the digital camera 10 here corresponds to the orientation of the display screen, as shown in FIGS. 4 (a) and 4 (b), and whether the display screen is in landscape orientation or portrait orientation. Refers to the state. The first tilt sensor 21a outputs a voltage indicating that the tilt angle is 0 degree when the digital camera 10 is in a state where the display screen is in the horizontal orientation as shown in FIG. As shown in (b), a voltage indicating that the tilt angle is 90 degrees is output when the display screen is in the vertical orientation.
The second tilt sensor 21b detects the tilt state of the housing of the digital camera 10 and prohibits laser beam irradiation in accordance with the laser beam irradiation direction that changes in accordance with the tilt state. Here, the tilted state of the casing of the digital camera 10 corresponds to the angle formed by the optical axis L2 of the digital camera 10 and the horizontal plane, as shown in FIG.
That is, the irradiation direction of the laser beam is such that when the optical axis L2 of the digital camera 10 is aligned with the subject person, the laser beam strikes the ground of the subject person's feet, in other words, the optical axis L1 of the laser beam. Is set in advance so as to form a predetermined depression angle with respect to the optical axis L2 of the digital camera 10. Therefore, if the photographer moves the direction of the digital camera 10 upward (the optical axis L2 of the digital camera 10 is upward (the direction that is an elevation angle with respect to the horizontal plane)), the optical axis L1 of the laser beam is interlocked with this. Moves upward, and a laser beam is irradiated toward the subject, which is dangerous. Therefore, when the predetermined angle of elevation is entered, the laser beam irradiation is stopped. This control is performed according to an instruction from the CPU 11.

Next, the operation of the present embodiment will be described.
FIG. 3 is a flowchart showing the two-shot shooting mode process executed by the CPU 11 of the digital camera 10. This process is a process realized by software processing in cooperation with the CPU 11 and the two-shot shooting mode program stored in the recording unit 17.

  In this two-shot shooting mode process, a display screen (liquid crystal finder) for displaying an image to be shot is divided into at least two screens (here, left and right screens), and one screen (here, the left screen). ) And the first shooting (first shooting), and then a different subject is placed on the other screen (here, the right screen) and the second shooting (second shooting). Is taken), and the photographed image data acquired by the first photographing and the second photographing are synthesized to generate one composite image.

  First, a screen division process for dividing a display screen for displaying an image to be taken into two left and right screens is executed (step S1: screen division means). In the screen division process, the display screen is divided into two left and right screens by one of the methods shown in FIGS. 4A and 4B according to the direction in which the digital camera 10 is held.

  FIG. 5 is a flowchart showing a screen division process executed by the CPU 11 of the digital camera 10. This process is a process realized by software processing in cooperation with the CPU 11 and the screen division processing program stored in the recording unit 17.

  First, the first tilt sensor 21a is activated (step T1), and when the first tilt sensor 21a outputs a voltage indicating that the tilt angle of the digital camera 10 is 0 ± α degrees or less (α is an error) ( (Step T2; YES), the display screen is divided into two left and right screens so that the lower end surface of the display screen is vertically divided into two equal parts at the dividing line D1 shown in FIG. 4A (Step T3), and the processing is as shown in FIG. The process proceeds to step S2. On the other hand, when the first tilt sensor 21a outputs a voltage indicating that the tilt angle of the digital camera 10 is 90 ± α degrees (α is an error) or less (step T2; NO, step T4; YES), FIG. The display screen is divided into two left and right screens so that the lower end surface of the display screen is vertically divided into two equal parts at the dividing line D2 shown in FIG.

In step S <b> 2 of FIG. 3, the laser is irradiated from the laser irradiation unit 19.
As shown in FIG. 6, this laser is applied to a position (such as the ground at the foot of the subject person) in the field of view in front of the digital camera 10 corresponding to the divided positions of the left and right screens divided in step S1. This is a guide mark indicating the standing position of the subject. In step S1, the first tilt sensor 21a outputs a voltage indicating that the tilt angle of the digital camera 10 is 0 ± α degrees (α is an error) or less, and the display screen is divided as shown in FIG. When this is done, the laser is emitted from the first laser irradiation unit 19a. In step S1, the first tilt sensor 21a outputs a voltage indicating that the tilt angle of the digital camera 10 is 90 ± α degrees (α is an error) or less, and the display screen is divided as shown in FIG. 4B. When this is done, the laser is emitted from the second laser irradiation unit 19b.
However, since it is dangerous to point the laser at a person, as shown in FIG. 7, it is detected from the second tilt sensor 21b that the optical axis L2 of the digital camera 10 is in an elevation range that is equal to or larger than a set angle with respect to the horizontal plane. In such a case, the CPU 11 forcibly stops the light emission by the laser irradiation unit 19 to ensure safety.

  Next, the image capturing unit 16 captures image data (step S3). That is, in the CCD 23, the subject light imaged through the lens 21 and the diaphragm mechanism 22 is photoelectrically converted to accumulate charges, and the accumulated charges are sequentially read out by the drive pulse signal supplied from the drive circuit 26. The read charge is converted into image data via the analog circuit 27 and the A / D converter 28 and is taken into the buffer register 29. Then, the marker display color determination process shown in FIG. 8 is executed based on the captured image data (step S4: marker display color determination means).

  FIG. 8 is a flowchart showing marker display color determination processing executed by the CPU 11 of the digital camera 10. This process is a process realized by software processing in cooperation with the CPU 11 and the marker display color determination processing program stored in the recording unit 17.

  First, image data captured by the imaging unit 16 is read out to the RAM 13, an average value of signal values (luminance values) of the image data is calculated (step T11), and the calculated average value is a preset reference. If it is equal to or greater than the value (step T12; YES), the marker display color is determined to be black (step T13), and the process proceeds to step S5 in FIG. When the calculated average value does not exceed the preset reference value (step T12; NO), the marker display color is determined to be white (step T14), and the process proceeds to step S5 in FIG.

  In step S5 in FIG. 3, the first marker images Ma1 and Mb1 are added to the image data read to the RAM 13 with the display color determined in step S4 and displayed on the display screen of the display unit 15 ( First marker image adding means).

  FIG. 9A is a diagram schematically showing the imaging surface of the CCD 23. The imaging surface of the CCD is configured by arranging a plurality of pixels (here, 256 pixels). The position of each pixel constituting the CCD 23 is identified by the address shown in FIG. In addition, one piece of image data captured by the imaging unit 16 includes information indicated by each pixel of the CCD 23, and the position of each pixel in the image data is also identified by a similar address.

  In FIG. 9A, a region indicated by gray is a region extracted as a captured image used for composition. The marker image is displayed as an index for positioning the background in the first shooting and the second shooting. In the first shooting, the corner outside the region extracted as the shot image (here, the upper left and the right) The lower five pixels (addresses A1, A2, A3, B1, C1 and addresses N16, O16, P14, P15, P16) are the display positions of the first marker images Ma1, Mb1. When the background is bright as shown in FIG. 9B, the display is black (low luminance), and when the background is dark as shown in FIG. 9C, the display is white (high luminance).

  FIG. 10A shows a display example of a display screen (liquid crystal finder) at the time of the first photographing. On the display screen (liquid crystal finder), not only a region extracted as a photographed image, that is, a region indicated by gray in FIG. 9A, but also the entire image captured by the CCD 23 is displayed. In the first shooting, the subject is arranged and displayed on the left side of the screen divided into left and right. On the upper left and lower right of the screen, first marker images Ma1 and Mb1 for alignment in the first shooting and the second shooting are displayed.

  In step S5 of FIG. 3, when the first marker images Ma1 and Mb1 are displayed on the display screen, the photographer waits for the shutter switch to be pressed. When the shutter switch is half-pressed (step S6; YES), the exposure condition (shutter speed and aperture amount) is determined according to the detection value from the sensor unit 15 (step S7), and the first focus control is performed. This is executed, and the lens is moved so that a predetermined area in the left screen of the CCD 23 is in focus (step S8: focus control means).

  Here, in normal shooting that is not the two-shot shooting mode, the focus is controlled so that the central portion of the CCD 23 is in focus, but in the two-shot shooting mode, the divided left and right are divided in each of the two shootings. The subject image is arranged on any of the screens. Therefore, in the first shooting in which the subject is placed on the left screen, the first focus area R1 set in advance in the left screen (for example, gray in the middle portion slightly to the left of the dividing line shown in FIG. 11A). In the second shooting in which the subject is placed on the right screen so that the focus is in the region shown, the second focus area R2 (for example, the dividing line shown in FIG. 11B) set in advance in the right screen. The focus is controlled so that the focus is slightly more on the right-side central area (shown in gray). Specifically, in the first focus control, the contrast of the first focal area of the image signal output from the CCD 23 is detected while moving the lens 21, and the lens position is moved to a position where the contrast becomes maximum. The

  When the first focus control is completed and the shutter switch is fully pressed (step S9; YES), the imaging unit 16 performs the first shooting under the exposure condition determined in step S7, and the first image is stored in the RAM 13. Are captured and displayed on the display screen of the display unit 15 (step S10).

  When the first shooting is completed, the subject and the photographer are changed, and the image data to be captured in the second shooting is captured in the imaging unit 16 (step S11), and the captured image data is stored in the RAM 13. The positions of the second marker images Ma2 and Mb2 read out and added to the image data are determined, and the second marker images Ma2 and Mb2 are added to the determined positions with the display color determined in step S4. (Step S12: second marker image adding means).

  Pixel position indicating a background image portion that matches the background image portion to which the first marker images Ma1 and Mb1 are added in the image data captured in the first capturing in the image data to be captured in the second capturing. The second marker images Ma2 and Mb2 are added and displayed, and the photographer performs the second shooting so that the first marker images Ma1 and Mb1 are aligned with the second marker images Ma2 and Mb2. It becomes possible to easily and accurately align the background of the first captured image and the second captured image. Therefore, in step S12, the position at which the second marker images Ma2 and Mb2 are added to the pixel position indicating the background image portion that matches the background image portion on which the first marker images Ma1 and Mb1 are displayed is determined. . Specifically, a part of the background image in the first shot image is decomposed into three colors of red / green / blue, and one of the three colors is selected and binarized into black and white. The edge is detected, a specific point of the detected edge (for example, a prominent point such as a mountain ridge line or a part of a building) is determined as a reference position, and the distance (number of pixels) from the first marker image Ma1 or Mb1 Is calculated. And the specific point corresponding to the specific point in the 1st picked-up image is extracted in the image data taken in by step S11, and the distance from there is 1st marker image Ma1, Mb1 from the 1st specific point. The positions of the second marker images Ma2 and Mb2 are determined at positions that are the same as the distance up to. Depending on the amount of deviation between the positions of the first captured image and the second captured image, one of the second marker images Ma2 and Mb2 may be positioned outside the image data area. In this case, the positions of the second marker images Ma2 and Mb2 are managed by the calculated distance from the specific point.

When the second marker images Ma2 and Mb2 are added in step S12, the captured images including the first marker images Ma1 and Mb1 obtained by the first capturing of the images including the second marker images Ma2 and Mb2 are added. It is displayed together (step S13). Further, the positions of the first marker images Ma1 and Mb1 in the captured image captured at the first time coincide with the positions of the second marker images Ma2 and Mb2 in the image to be captured at the second time captured in step S11. Is determined (step S14: determination means), and if it is determined that they match (step S14; YES), the buzzer 20 sounds a buzzer (step S15: notification means).
The buzzer 20 confirms that the position of the first marker image in the first captured image matches the position of the second marker image in the second image captured by the imaging unit 16. It is for notifying.

  FIG. 10B shows a display example of a display screen (liquid crystal finder) at the time of the second shooting. As shown in FIG. 10B, in the second shooting, the shot image obtained in the first shooting and the first marker images Ma1 and Mb1 are displayed on the display screen, and are imaged in step S11. The image to be photographed captured by the unit 16 is displayed with the second marker images Ma2 and Mb2 added thereto. In FIG. 10B, the background of the image to be captured for the second time is slightly shifted upward with respect to the first captured image. Therefore, the second marker image Ma2 is displayed in a state where a part thereof is outside the image area and a part thereof overlaps the first marker image Ma1. The second marker image Mb2 is displayed so as to be shifted upward from the first marker image Mb1 by the same amount as the background shift. Whether the position of the first marker image Ma1, Mb1 and the second marker image Ma2, Mb2 causes a shift in the position of the image to be shot from the first shot image. Can be easily recognized. In addition, the photographer can easily align the two images by combining the first and second marker images. Further, it is automatically determined whether or not the positions of the first and second marker images match, and if they match, the buzzer 20 is sounded. Shooting at the time when the positions of the backgrounds coincide with each other is facilitated, and it is possible to obtain an image that is accurately aligned.

  When the shutter switch is half-pressed according to the buzzer sound of the buzzer 20 (step S16), the second focus control is performed (step S18: focus control means). That is, the focus is controlled so that the above-described second focal area R2 is focused. Specifically, the contrast of the second focal area R2 of the image signal output from the CCD 23 is detected while moving the lens 21, and the lens position is moved to a position where the contrast becomes the largest.

  When the second focus control is completed and the shutter switch is fully pressed (step S18; YES), the imaging unit 16 performs the second shooting under the exposure condition determined in step S7, and the RAM 13 stores the second image. Are taken (step S19). An area used for composition from the first and second shot images (the left half of the area shown in gray in FIG. 9A in the first shooting, and the area shown in FIG. 9 in the second shooting). a) the right half of the area indicated by gray) is extracted to generate a composite image (step S20), the generated composite image is recorded in the captured image recording area 171 (step S21), and the process is terminated. To do. FIG. 10C is a diagram illustrating an example of a composite image obtained by this processing. As shown in FIG. 10C, a two-shot image with no background shift can be obtained.

(Modification)
In the above embodiment, the case where two shots are taken to obtain a two-shot image has been described as an example, but the function of the two-shot shooting mode can also be used for shooting a large number of people. However, when shooting with a large number of people, dividing the screen into left: right = 1: 1 results in an image with a biased subject arrangement. Therefore, it is preferable that the digital camera 10 includes means for setting the ratio of dividing the left and right two screens. For example, a plurality of left and right screen division menus (for example, 90:10, 80:20, 70:30...) Are prepared, and in the above-described screen division processing, the input unit 12 serving as a division ratio setting unit The display screen of the display unit 15 is divided into left and right at a ratio based on the division menu that has been set and input (selected). As a result, the screen division ratio becomes variable, and the subject can be arranged in a well-balanced manner according to the number of photographers.

  As described above, according to the digital camera 10, a screen divided into at least two screens is displayed on the display screen for displaying an image to be photographed, and different subjects are arranged on each screen twice. The following processing is performed in the two-shot shooting mode in which shooting is performed, and the shot images acquired by the two shootings are combined to generate a combined image.

  That is, when acquiring a captured image by performing the first shooting, a first marker image is added to the captured image, and the specific point of the background image in the captured image acquired by the first shooting and the first A distance from the marker image is calculated, and a second marker image is added to a position in the image to be acquired in the second shooting at a position where the distance from the specific point of the background image is the same as the calculated distance. A captured image including one marker image and an image including a second marker image to be captured by the second capturing are displayed on the display screen. Further, it is determined whether or not the position of the first marker image in the photographed image acquired by the first photographing matches the position of the second marker image of the image to be photographed by the second photographing. When it is determined, a notification to that effect is given by a buzzer sound.

  Therefore, the photographer can easily recognize whether or not the position of the image to be photographed is different from the first photographed image based on the position of the marker image, and the two marker images can be combined. Thus, it is possible to easily align the two images. Further, it is automatically determined whether or not the first marker image and the second marker image match, and if they match, the buzzer 20 is sounded, so the background of the image to be photographed the second time It becomes easy to carry out shooting when the position of the background and the position of the background of the first shot image coincide with each other, and it is possible to obtain a composite image aligned with high accuracy.

  Further, the display color of the first marker image and the second marker image is the signal value (luminance value) of the image when the first image is captured and the captured image is acquired, that is, the brightness of the image at the time of shooting. Therefore, it is possible to display a marker image that is easy for the photographer to view by displaying a black marker image when the background of the image to be photographed is bright and displaying a white marker image when the background is dark. Become.

  Further, the orientation of the imaging device is determined based on the detection information from the first tilt sensor 21a, and the display screen is divided into two left and right screens according to the determined orientation of the imaging device. It is possible to take a two-shot image by holding the camera in a landscape orientation, or to take a two-shot image by holding the photographing device vertically.

  Further, since the display screen is divided into left and right screens at a ratio based on the division ratio set by the input unit 12, it is possible to obtain a composite image in which subjects are arranged in a balanced manner according to the number of photographers.

  Further, in each of the first shooting and the second shooting, focus control is performed to move the lens so that the subject is focused on the screen set in advance as the subject is arranged, so that both left and right subjects can be controlled. It becomes possible to focus.

  In addition, since the laser irradiation unit 19 irradiates the laser at a position corresponding to the divided position of the left and right two screens in front of the digital camera 10, the subject can know his / her standing position, and the subject is arranged in a balanced manner. It becomes possible to obtain the synthesized image.

  In addition, the description content in the said embodiment is a suitable example of the digital camera 10 which concerns on this invention, and is not limited to this.

  For example, in the above embodiment, the photographer is notified by the buzzer sound when the first marker image and the second marker image coincide with each other. However, the present invention is not limited to this. Notification may be made by a voice message or the like such as “the images match”. Alternatively, an LED (Light Emitting Diode) may be provided in the vicinity of the display screen, and the LED may be turned on to notify the photographer that the first marker image and the second marker image match.

  Moreover, in the said embodiment, although the color of the 1st marker image and the 2nd marker image was made the same, it is good also as displaying by an individual color. As shown in FIG. 10B, either one of the second marker images Ma2 and Mb2 is an area of the display screen depending on the amount of positional deviation between the first captured image and the second captured image. There is a case where the position protrudes outside or overlaps the first marker images Ma1 and Mb1. When the first marker image and the second marker image overlap, it becomes difficult to see the overlapped portion if the first marker image and the second marker image are the same color, but the first marker image and the second marker image By setting the color of the two marker images to different colors, it is possible to easily display the overlapping portions. For example, the color of the first marker image is black or white as described above, and the color of the second marker image is red (low) when the average value of the signal values (luminance values) of the image data is greater than or equal to the reference value. (Brightness), if the reference value is not exceeded, pink (high brightness) is displayed as the second marker image on the first marker image, so that the first marker image and the second marker image are displayed. It is possible to display the overlapped portion in an easy-to-see manner.

  Alternatively, the first captured image and the second captured image may be reduced and displayed on the display screen (liquid crystal finder). Accordingly, even when the second marker image protrudes from the image area, the second marker image can be displayed on the display screen based on the distance from the specific point.

Moreover, although the above-mentioned screen division is made into two left and right screens, a third image may be taken as any one of the taken images acquired by the first shooting, and a plurality of shooting screens are further displayed. You may synthesize | combine by image | photographing similarly to the above-mentioned.
Further, although the entire display screen is divided and displayed on a plurality of screens, a part of the display unit may be displayed as a screen divided into a plurality of screens.
Further, a screen obtained by dividing the entire display screen into two upper and lower screens may be displayed. In this case, the entire display screen may be divided into two upper and lower screens and further divided into a plurality of screens. The part area may be displayed as a screen divided into a plurality of screens.

  In addition, the detailed configuration and detailed operation of the digital camera 10 can be changed as appropriate without departing from the spirit of the present invention.

1 is a block diagram showing a functional configuration of a digital camera 10 according to the present invention. It is a figure which shows the detailed structure of the imaging part 16 of FIG. It is a flowchart which shows the two-shot imaging | photography mode process performed by CPU11 of FIG. (A) is a figure which shows the method of dividing | segmenting the display screen at the time of image | photographing with the housing | casing of the digital camera 10 sideways, (b) is the display at the time of image | photographing with the housing | casing of the digital camera 0 upright It is a figure which shows the division | segmentation method of a screen. It is a flowchart which shows the screen division | segmentation process performed by CPU11 of FIG. It is a figure for demonstrating the laser position irradiated by the laser irradiation part. It is a figure for demonstrating the direction of the laser irradiated by the laser irradiation part. It is a flowchart which shows the marker display color determination process performed by CPU11 of FIG. (A) The figure which shows typically the imaging surface of CCD23 of FIG. 2, (b) (c) is a figure which shows typically the relationship between the brightness of image data, and the display color of a marker image. (A) is a display example of the display screen (liquid crystal finder) at the time of the first shooting, (b) is a display example of the display screen (liquid crystal finder) when the second shooting is performed, and (c) is 1 It is a figure which shows the example of a display of the synthesized image which synthesize | combined the captured image of the 2nd time and the 2nd time. (A) is a figure which shows a 1st focus area typically, (b) is a figure which shows a 2nd focus area typically.

Explanation of symbols

10 Digital camera 11 CPU
12 Input unit 13 RAM
14 Transmission control unit 15 Display unit 16 Imaging unit 17 Recording unit 171 Captured image recording area 18 Recording medium driving unit 18a Recording medium 19 Laser irradiation unit 19a First laser unit 19b Second laser unit 20 Buzzer 21 Tilt sensor 21a First tilt Sensor 21b Second tilt sensor 22 Bus 21 Lens 22 Aperture mechanism 23 CCD
24 optical system drive unit 25 sensor unit 26 drive circuit 27 analog processing circuit 28 A / D conversion circuit 29 buffer register 30 signal processing circuit 31 compression / decompression circuit

Claims (7)

A screen divided into at least two screens is displayed on the display screen for displaying an image to be photographed, a subject is placed on one screen, the first photographing is performed, and then a different subject is presented on the other screen. In the photographing apparatus that performs the second photographing by arranging and generates a composite image by combining the photographed images acquired by the first photographing and the second photographing,
First marker image adding means for adding a first marker image to the captured image when performing the first imaging to obtain a captured image;
The distance between the specific point of the background image in the captured image acquired by the first imaging and the first marker image is calculated, and the background image is specified in the image to be acquired in the second imaging. A second marker image adding means for adding a second marker image at a position where the distance from a point is the same as the calculated distance;
Display means for displaying on the display screen a captured image including the first marker image and an image including the second marker image to be captured by the second capturing;
Judgment means for judging whether the position of the first marker image in the photographed image acquired by the first photographing coincides with the position of the second marker image of the image to be photographed by the second photographing. When,
As a result of determination by the determination means, when it is determined that the position of the first marker image and the position of the second marker image match, a notification means for notifying that effect,
An imaging apparatus comprising:   Marker display color determining means for determining the display color of the first marker image and the second marker image based on the brightness of the image when performing the first shooting and acquiring the shot image The imaging device according to claim 1. A tilt sensor that detects the tilt state of the housing of the photographing device and outputs detection information;
A screen dividing means for determining the orientation of the photographing apparatus based on detection information from the tilt sensor and dividing the display screen into at least two screens according to the determined orientation of the photographing apparatus. The imaging device according to claim 1 or 2. A division ratio setting means for setting a division ratio when dividing the display screen into at least two screens;
4. The photographing apparatus according to claim 3, wherein the screen dividing unit divides the display screen into at least two screens at a ratio based on the set division ratio. Among the divided screens, a screen on which a subject is arranged in the first photographing and a screen on which a subject is arranged in the second photographing are set in advance,
In each of the first photographing and the second photographing, a focus control means is provided for moving the lens so that the subject is focused on a screen set in advance as the subject is arranged. The imaging device according to any one of claims 1 to 4.   The imaging apparatus according to claim 1, further comprising a laser irradiation unit that irradiates a laser beam at a position corresponding to a division position of the display screen in front of the imaging apparatus. A screen divided into at least two screens is displayed on the display screen for displaying an image to be photographed, a subject is placed on one screen, the first photographing is performed, and then a different subject is presented on the other screen. A computer for controlling a photographing device that performs a second photographing and synthesizes a photographed image obtained by the first photographing and the second photographing to generate a composite image;
A function of adding a first marker image in the photographed image when the first photograph is taken to obtain the photographed image;
The distance between the specific point of the background image in the captured image acquired by the first imaging and the first marker image is calculated, and the background image is specified in the image to be acquired in the second imaging. A function of adding a second marker image at a position where the distance from a point is the same as the calculated distance;
A function for displaying on the display screen a captured image including the first marker image and an image including the second marker image to be captured by the second capturing;
A function of determining whether or not a position of the first marker image in the photographed image acquired by the first photographing coincides with a position of the second marker image of the image to be photographed by the second photographing; ,
As a result of determination by the determination means, when it is determined that the position of the first marker image and the position of the second marker image match,
A program to realize

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