JP4910581B2 - Imaging apparatus, imaging method, and program - Google Patents

Description

  The present invention relates to an imaging apparatus, an imaging method, and a program, and in particular, an imaging apparatus and an imaging method that allow a user to accurately grasp a focused object from a recorded image displayed on a display unit. As well as programs.

  Generally, a digital (still) camera includes an image sensor that captures an image, a display that displays an image captured by the image sensor, and the like, and displays an image captured by the image sensor in real time on the display. . The user can determine the composition of the subject based on an image displayed in real time on the display (hereinafter referred to as a through image as appropriate) and operate the shutter.

  The digital camera also displays on the display a focus frame indicating a range used for focus control by being superimposed on the through image. When the user operates the shutter, the digital camera focuses on the subject displayed within the range of the focus frame, and an image captured by the image sensor according to the user's operation is used as a recorded image, for example. Record on a removable memory card.

  Furthermore, when recording the recorded image on the memory card, the digital camera displays the recorded image on the display instead of the through image for about 2 seconds, for example. The user can determine, for example, whether or not the subject is in focus by checking a recorded image (hereinafter referred to as a review image as appropriate) displayed on the display.

  Incidentally, in recent years, with the increase in the number of pixels of the image sensor, the resolution of the recorded image has been increased, and the number of pixels of the recorded image has increased. On the other hand, the number of pixels of the display does not increase as the number of pixels of the recorded image increases, and there is a difference between the number of pixels of the review image displayed on the display and the number of pixels of the recorded image recorded on the recording medium. It is expanding.

  When the difference between the number of pixels in the review image and the number of pixels in the recorded image increases, the review image displayed on the display does not allow the user to check the details of the recorded image and whether the subject is in focus. It becomes difficult to judge.

  Thus, for example, there is a digital camera that displays an enlarged image of a part of a recorded image on a display as a review image (see, for example, Patent Document 1).

  By displaying an enlarged image of a part of the recorded image on the display as a review image, the user can check the details of the recorded image and easily determine whether the subject is in focus. Can do.

  1 and 2 are display examples of a through image or a review image displayed on a display of a conventional digital camera.

  For example, the user can operate the digital camera to place the focus frame at an arbitrary position on the screen. In the display example of FIG. 1, the focus frame is placed at the center of the screen, and the table of FIG. In the example shown, a focus frame is arranged on the lower left side of the center of the screen.

  A through image 11a when the shutter is operated by the user (or immediately before) is shown on the upper side of FIG. 1, and a recorded image having the same size as the through image 11a is shown in the center of FIG. A review image 11b is shown, and a review image 11c that is a part of a recorded image corresponding to an image obtained by enlarging the through image 11a four times is shown on the lower side of FIG.

  For example, when the user moves the digital camera so that the airplane 12a is placed in the center of the display screen with the airplane 12a as a subject, the digital camera displays a through image 11a in which the airplane 12a is placed in the center of the screen. To display. Further, a focus frame 13c is displayed on the display so as to be superimposed on the airplane 12a of the through image 11a.

  For example, if the number of pixels of the display and the number of pixels of the recorded image are the same, when the user determines the composition as in the through image 11a and operates the shutter, the digital camera responds to the operation of the shutter. The captured image is recorded as a recorded image, and the review image 11b on which the airplane 12b having the same size as the airplane 12a displayed on the through image 11a is displayed is displayed on the display. Further, the digital camera displays on the display a focus frame 13b having the same position and size as the focus frame 13a that is displayed superimposed on the through image 11a.

  On the other hand, for example, if the number of pixels of the recorded image is four times the number of pixels of the display, when the user determines the composition and operates the shutter as in the through image 11a, the digital camera An image picked up according to the operation is recorded as a recorded image, and a review image 11c on which an airplane 12c that is four times larger than the airplane 12a displayed on the through image 11a is displayed on the display. In addition, the digital camera displays on the display a focus frame 13c having the same position and size as the focus frame 13a displayed superimposed on the through image 11a.

  In other words, the review image 11c is an image in which a part of a recorded image that is four times as large as the through image 21a is displayed on the display with the focus frame 13a being displayed in the through image 11a. .

  Thus, in the conventional digital camera, in the review image 11c, the airplane 12c is displayed in a size four times that of the airplane 12a displayed in the through image 11a, but is superimposed on the through image 11a. The focus frame 13a displayed and the focus frame 13c displayed superimposed on the review image 11c are displayed in the same size. Therefore, the portion of the subject shown in the review image 11c that is shown in the range surrounded by the focus frame 13c is the focus frame 13a used for focus control of the subject shown in the through image 11a. Becomes narrower than the portion of the subject shown in the area surrounded by.

  That is, in the through image 11a, the fuselage of the airplane 12a and a part of the fuselage side of the left and right main wings are shown in the range surrounded by the focus frame 13a, but in the review image 11c, the airplane 12c Only a part of the fuselage that is narrower than that of the through image 11a is shown, and the part of the left and right main wing on the side of the fuselage is not shown as in the case of the through image 11a.

  Next, a through image 21a when the shutter is operated by the user (or immediately before) is shown on the upper side of FIG. 2, and a recording having the same size as the through image 21a is shown in the center of FIG. A review image 21b which is an image is shown, and a review image 21c which is a part of a recorded image corresponding to an image obtained by enlarging the through image 21a four times is shown on the lower side of FIG. .

  For example, the user operates the digital camera so that the focus frame 23a is arranged on the lower left side of the center of the display screen, the airplane 22a is the subject, and the digital camera is arranged so that the airplane 22a is arranged on the left side of the screen. When moved, the digital camera displays on the display a through image 21a in which the airplane 22a is arranged on the left side of the screen. In addition, the focus frame 23a is displayed on the display so as to overlap the tip of the right wing of the airplane 22a of the through image 21a.

  For example, if the number of pixels of the display and the number of pixels of the recorded image are the same, when the user determines the composition as in the through image 21a and operates the shutter, the digital camera responds to the operation of the shutter. The recorded image is recorded as a recorded image, and a review image 21b on which an airplane 22b having the same size as the airplane 22a displayed on the through image 21a is displayed is displayed on the display. In addition, the digital camera displays on the display a focus frame 23b having the same position and size as the focus frame 23a displayed on the through image 21a.

  On the other hand, for example, if the number of pixels of the recorded image is four times the number of pixels of the display, when the user determines the composition as in the through image 21a and operates the shutter, the digital camera The image picked up according to the operation is recorded as a recorded image, and a review image 21c on which an airplane 22c that is four times larger than the airplane 22a displayed on the through image 21a is displayed on the display. Further, the digital camera displays the focus frame 23c on the display so that the focus frame 23c having the same size as the focus frame 23a displayed superimposed on the through image 21a is arranged at the center of the screen.

  In other words, the review image 21c is an image in which a part of the recorded image that is four times as large as the through image 21a is displayed on the display centering on the portion where the focus frame 23a is displayed in the through image 21a. .

  Here, as in the case described with reference to FIG. 1, the portion of the subject shown in the range surrounded by the focus frame 23c among the subjects shown in the review image 21c is shown in the through image 21a. It becomes narrower than the portion of the subject that is reflected in the range surrounded by the focus frame 23a used for focus control. Thereby, in the review image 21c, only the background is displayed within the range of the focus frame 23c. That is, in the through image 21a, the tip of the right wing of the airplane 22a is displayed within the range of the focus frame 23a, whereas in the review image 21c, the tip of the right wing of the airplane 22c is within the range of the focus frame 23c. Only the background is displayed without being displayed.

  As described with reference to FIGS. 1 and 2, the portion of the subject reflected in the review frame among the subjects reflected in the review image is the same as the subject reflected in the through image. The user is unable to accurately grasp the focused range of the recorded image by being narrower than the portion of the subject shown in the range surrounded by the focus frame used for focus control. In particular, as described with reference to FIG. 2, when only the background is displayed without displaying the subject to be focused within the range of the focus frame of the review image, the user In some cases, the user may mistakenly assume that the recorded image is captured with the focus on the background displayed within the frame.

In other words, in the review image, the subject to be focused is not displayed within the range of the focus frame, which may make it difficult for the user to accurately grasp the focused target. .
JP 2003-125269 A

  For example, there is a need for a digital camera that allows a user to accurately grasp a focused object by displaying a review image in which the focused object is accurately displayed within the range of the focus frame. .

  The present invention has been made in view of such a situation, and makes it possible for a user to accurately grasp a focused object from a review image displayed on a display.

An imaging apparatus according to one aspect of the present invention is an imaging apparatus that captures an image and records the predetermined image captured in response to a user operation as a recorded image, the imaging device capturing the image, Display means for displaying the image picked up by the image pickup device and a first focus frame indicating a range used for focusing control, and displayed on the display means when the recorded image is picked up In addition, when displaying the recording image on the display unit, the acquisition unit that acquires focus frame information indicating the position and size of the first focus frame is displayed on the display unit when the recording image is captured. Determining means for determining the magnification of the recorded image with respect to the image that has been made, and causing the display means to display the recorded image at the magnification, and the focus frame information Based on the second focus frame indicating the range of the focus has been combined in the recorded image, and a display control means for displaying in the magnification with respect to the first focus frame, and controls the focus control mode And the acquisition unit acquires focus mode information indicating a focus control mode, and the display unit controls each focus based on the focus mode information. The first or second focus frame is displayed in a display format corresponding to the mode .

An imaging method or program according to one aspect of the present invention is provided in an imaging method for an imaging apparatus that captures an image and records the predetermined image captured according to a user operation as a recorded image, or a computer of the imaging apparatus. A program to be executed, wherein the image pickup device displays an image pickup device for picking up the image, the image picked up by the image pickup device, and a first focus frame indicating a range used for focusing control. A display unit that controls the focus, and has a plurality of focus control modes, and the first display displayed on the display unit when the recorded image is captured. focus frame information indicating the position and size of the focus frame, and obtains the focus mode information indicating the focus control mode, the In displaying a recorded image on the display means, a magnification of the recorded image with respect to the image displayed on the display means when the recorded image is captured is determined, and the recorded image is displayed on the display means. with display magnification, on the basis of the focus frame information, see contains the step of displaying by the magnification of the second focus frame, with respect to the first focus frame indicating the range of the focus has been combined in the recorded image The display means displays the first or second focus frame in a display format corresponding to each focus control mode based on the focus mode information .

In one aspect of the present invention, the imaging device displays an imaging element that captures an image, an image captured by the imaging element, and a first focus frame that indicates a range used for focusing control. And has a plurality of focus control modes as control modes for controlling the focus, and the position and size of the first focus frame displayed on the display means when the recorded image is captured And focus mode information indicating the focus control mode . Further, when displaying the recorded image on the display unit, the magnification of the recorded image with respect to the image displayed on the display unit when the recorded image is captured is determined. The recorded image is displayed on the display unit at the magnification, and a second focus frame indicating a focused range in the recorded image is displayed with respect to the first focus frame based on the focus frame information. , Displayed at that magnification. Furthermore, the first or second focus frame is displayed on the display unit in a display format corresponding to each focus control mode based on the focus mode information.

  According to one aspect of the present invention, the recorded image displayed on the display unit can allow the user to accurately grasp the target in focus.

Embodiments of the present invention will be described below .

  Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings.

  FIG. 3 is a block diagram showing a configuration example of an embodiment of the digital camera 31 to which the present invention is applied.

  3, a digital camera 31 includes a lens unit 32, an actuator 33, an image sensor 34, an A / D (Analog / Digital) circuit 35, an image processing unit 36, a RAM (Random Access Memory) 37, and an LCD (Liquid Crystal Display). 38, a codec 39, a memory controller 40, a recording medium 41, operation keys 42, and a control unit 43.

  The lens unit 32 includes a lens that collects light from a subject (not shown), a focus lens for adjusting focus (focus), an optical system such as a diaphragm, and the like. The light is condensed on the light receiving surface 34.

  Based on the control of the control unit 43, the actuator 33 moves the focus lens of the lens unit 32 and adjusts the focus.

  The image sensor 34 is configured by, for example, a CCD (Charge Coupled Device), a CMOS (Complementary Metal Oxide Semiconductor) sensor, and the like, and captures an image. That is, the imaging device 34 receives light from a subject incident through the lens unit 32 and performs photoelectric conversion, and an analog signal image (image signal) as an electrical signal corresponding to the amount of received light is converted into A / D circuit 35 is supplied.

  The A / D circuit 35 A / D converts the analog signal image from the image sensor 34 and supplies the digital signal image (image data) obtained as a result to the image processing unit 36.

  The image processing unit 36 performs image processing for removing noise, image processing for adjusting white balance, and the like on the image from the A / D circuit 35 under the control of the control unit 43.

  Furthermore, for example, if the number of horizontal × vertical pixels of the recorded image is set to 640 × 480, the image processing unit 36 sets the number of horizontal × vertical pixels to 640 with respect to the image captured by the image sensor 34. Image processing for converting to × 480 is performed, and the image subjected to image processing is supplied to the codec 39. For example, if the number of horizontal × vertical pixels of the recorded image is set to 1280 × 960, the image processing unit 36 sets the number of horizontal × vertical pixels to 1280 with respect to the image captured by the image sensor 34. Image processing for converting to × 960 is performed, and the image subjected to image processing is supplied to the codec 39.

  For example, if the number of horizontal × vertical pixels of the displayable area of the LCD 38 is 640 × 480, the image processing unit 36 sets the number of horizontal × vertical pixels to 640 with respect to the image captured by the image sensor 34. Image processing for converting to × 480 is performed, and a focus frame (for example, a focus frame 53a in FIG. 4 described later) indicating a range used for focus control is superimposed on the image subjected to image processing. Then, the image processing unit 36 converts the image on which the focus frame is superimposed into a video signal that can be displayed on the LCD 38, and supplies the video signal to the LCD 38 for display.

  The RAM 37 stores data that needs to be temporarily stored when the image processing unit 36 performs image processing.

  The LCD 38 displays an image supplied from the image processing unit 36. That is, the LCD 38 displays an image in which the focus frame is superimposed on the image captured by the image sensor 34.

  The codec 39 compresses the image supplied from the image processing unit 36 by, for example, the JPEG (Joint Photographic Experts Group) method and supplies the compressed image obtained as a result to the memory controller 40. The codec 39 expands the compressed image supplied from the memory controller 40 and supplies the image obtained as a result to the LCD 38 via the image processing unit 36 for display.

  The memory controller 40 controls the recording medium 41, records the compressed image supplied from the codec 39 on the recording medium 41, reads the compressed image recorded on the recording medium 41, and supplies the compressed image to the codec 39.

  The recording medium 41 is composed of a flash memory such as an EEPROM (Electronically Erasable and Programmable Read Only Memory), and records a compressed image supplied from the memory controller 40 as a recorded image. The recording medium 41 may be built in the digital camera 31 or may be detachable from the digital camera 31.

  The operation key 42 includes, for example, a shutter and a direction instruction key (not shown). The operation key 42 is operated by the user and supplies an operation signal corresponding to the user operation to the control unit 43.

  The control unit 43 includes a CPU (Central Processing Unit) 44 and a memory 45, and the CPU 44 executes programs recorded in the memory 45 to control each unit constituting the digital camera, and from the operation keys 42. Various processes are performed according to the operation signal. The memory 45 stores a program executed by the CPU 44, data necessary for the CPU 44 to execute the program, and the like.

  For example, the control unit 43 controls the image processing unit 36 to display the image captured by the image sensor 34 on the LCD 38 in real time as a through image.

  Further, when the user operates a shutter (not shown) of the operation key 42 and an operation signal corresponding to the operation of the shutter is supplied from the operation key 42, the control unit 43 controls the image processing unit 36 to operate the operation key. An image picked up by the image pickup device 34 at the timing when the operation signal is supplied from 42 is recorded on the recording medium 41 via the codec 39 and the memory controller 40 as a recorded image.

  Further, the control unit 43 controls the image processing unit 36 to display the recorded image on the LCD 38 as a review image for about 2 seconds, for example. When the control unit 43 displays the review image on the LCD 38, for example, an image in which a part of the recorded image is enlarged according to the ratio between the number of pixels of the recorded image and the number of pixels of the displayable area of the LCD 38. Is displayed on the LCD 38 as a review image.

  The control unit 43 also displays a focus frame indicating the position and size of the focus frame displayed on the LCD 38 by the image processing unit 36 when an operation signal corresponding to the operation of the shutter is supplied from the operation key 42. Information is acquired from the image processing unit 36 and temporarily stored in the memory 45. Then, when displaying the review image on the LCD 38, the control unit 43 displays a focus frame (for example, a focus frame 53c in FIG. 4 to be described later) indicating a focused range of the recorded image based on the focus frame information. Display it superimposed on the review image.

  Here, the digital camera 31 has a plurality of focus control modes as control modes for controlling the focus, and the control unit 43 receives an operation signal corresponding to a user operation from the operation key 42. In addition, the focus mode information indicating the focus control mode of the digital camera 31 is temporarily stored in the memory 45 together with the focus frame information.

  As a focus control mode of the digital camera 31, for example, a center emphasis mode in which focus is focused on a subject arranged near the center of the screen, or an arbitrary position on the screen according to a user operation. Focus on a subject that is relatively close to the digital camera 31 of subjects displayed in a plurality of preset areas. There are multi modes to match. In the digital camera 31, for example, when starting to capture an image, the user operates the operation key 42 to set (select) the focus control mode.

  The program to be executed by the CPU 44 is installed (stored) in the memory 45 in advance, or is recorded in the recording medium 41 and provided to the user as a package medium. From the recording medium 41, the memory controller 40, It can be installed in the memory 45 via the codec 39 and the image processing unit 36. A program to be executed by the CPU 44 is downloaded directly from the download site to the digital camera 31 via a communication unit (not shown), or downloaded by a computer (not shown), supplied to the digital camera 31, and stored in the memory 45. It is also possible to install.

  In the digital camera 31 configured as described above, an image captured by the image sensor 34 is supplied to the image processing unit 36 via the A / D circuit 35, and the focus frame is superimposed on the image processing unit 36. It is displayed on the LCD 38 as a through image. In the digital camera 31, when a user operates a shutter (not shown) of the operation key 42, an image captured by the image sensor 34 at a timing corresponding to the operation of the shutter is recorded on the recording medium 41 as a recorded image. At the same time, it is displayed on the LCD 38 as a review image.

  Next, FIG. 4 shows a display example of a through image or a review image displayed on the LCD 38 when the focus control mode of the digital camera 31 is the free spot mode.

  4 shows a through image 51a when the user operates the shutter (or immediately before), and in the center of FIG. 4 is a recorded image having the same size as the through image 51a. A review image 51b is shown, and a review image 51c, which is a part of a recorded image corresponding to an image obtained by enlarging the through image 51a four times, is shown on the lower side of FIG.

  For example, when the user operates the digital camera so that the focus frame 53a is disposed on the lower left side from the center of the screen, and moves the digital camera so that the airplane 52a is disposed on the left side of the screen with the airplane 52a as a subject. The digital camera 31 displays on the LCD 38 a through image 51a in which the airplane 52a is arranged on the left side of the screen. The LCD 38 displays a focus frame 53a superimposed on the tip of the right wing of the airplane 52a in the through image 51a.

  Here, for example, it is assumed that the horizontal × vertical pixel count of the displayable area of the LCD 38 is 640 × 480, and the horizontal × vertical pixel count of the recorded image is set to 640 × 480.

  When the user determines the composition as in the through image 51a and operates a shutter (not shown) of the operation key 42, the digital camera 31 records an image captured according to the operation of the shutter as a recorded image. The review image 51b in which the airplane 52b having the same size as the airplane 52a displayed in the through image 51a is displayed on the LCD 38. Further, the digital camera 31 displays on the LCD 38 a focus frame 53b having the same position and size as the focus frame 53a displayed superimposed on the through image 51a.

  On the other hand, for example, the horizontal × vertical number of pixels of the displayable area of the LCD 38 is 640 × 480, and the horizontal × vertical number of pixels of the recorded image is 1280 × 960 (that is, the horizontal × vertical pixel of the displayable area of the LCD 38). (4 times the number).

  When the user determines the composition as in the through image 51a and operates a shutter (not shown) of the operation key 42, the digital camera 31 records an image captured according to the operation of the shutter as a recorded image. Then, the review image 51c on which the airplane 52c that is four times larger than the airplane 52a displayed on the through image 51a is displayed on the LCD 38. Further, the digital camera 31 displays the focus frame 53c on the display so that the focus frame 53c that is four times as large as the focus frame 53a displayed superimposed on the through image 51a is arranged at the center of the screen. .

  That is, the review image 51c is an image in which a part of a recorded image that is four times as large as the through image 51a is displayed on the LCD 38 with the focus frame 53a being displayed in the through image 51a. .

  Thus, in the review image 51c, the focus frame 53c is displayed with a size four times that of the focus frame 53a in response to the plane 52c being displayed with a size four times that of the plane 52a. Note that the mark and “× 4.0” displayed on the upper left of the review image 51c indicate that the review image 51c is an image corresponding to an image obtained by enlarging the through image 51a four times.

  Next, FIG. 5 is a flowchart for explaining processing in which the digital camera 31 in FIG. 3 captures an image.

  When the user captures an image with the digital camera 31, the user sets (selects) the number of horizontal × vertical pixels of the recorded image, the focus control mode, and the like. For example, when the user selects the free spot mode as the focus control mode, the user can operate a direction key (not shown) provided in the operation key 42 to move the position of the focus frame. Then, the user moves the position of the focus frame, determines the composition based on the through image displayed on the LCD 38, and operates a shutter (not shown) of the operation key 42.

  When the user operates the shutter, an operation signal corresponding to the operation of the shutter is supplied from the operation key 42 to the control unit 43. In step S11, the control unit 43 controls each unit of the digital camera 31 to display an image. Take an image.

  For example, if the user operates the shutter while the through image 51a of FIG. 4 is displayed, the control unit 43 controls the actuator 33 according to the operation of the shutter to focus the through image 51a. The focus is adjusted so that the tip of the right wing of the airplane 52a displayed in the range of the frame 53a is in focus, and the image processing unit 36 is controlled to adjust the focus to the image captured by the image sensor 34. Perform image processing.

  After the processing of step S11, the process proceeds to step S12, where the control unit 43 acquires focus frame information indicating the position and size of the focus frame from the image processing unit 36, and the memory 45 together with the focus mode information indicating the focus control mode. Remember me.

  After the processing of step S12, the process proceeds to step S13, and the control unit 43 determines whether or not the number of horizontal × vertical pixels of the recorded image is the same as the number of horizontal × vertical pixels of the displayable area of the LCD 38.

  When the control unit 43 determines in step S13 that the number of horizontal × vertical pixels of the recorded image is the same as the number of horizontal × vertical pixels of the displayable area of the LCD 38, the process proceeds to step S14, where the control unit 43 Then, the image processing unit 36 is controlled so that a review image on which a subject having the same size as the subject displayed on the through image is displayed on the LCD 38 instead of the through image. Further, the control unit 43 displays on the LCD 38 a focus frame having the same position and size as the focus frame displayed superimposed on the through image based on the focus frame information stored in the memory 45 in step S12. Let

  That is, for example, if the user operates the shutter while the through image 51a of FIG. 4 is displayed, in step S14, the control unit 43 has the same size as the airplane 52a displayed in the through image 51a. The review image 51b on which the airplane 52b is displayed is displayed on the LCD 38, and the focus frame 53b having the same position and size as the focus frame 53a displayed superimposed on the through image 51a is displayed on the LCD 38.

  On the other hand, if the control unit 43 determines in step S13 that the horizontal × vertical pixel count of the recorded image is not the same as the horizontal × vertical pixel count of the displayable area of the LCD 38, the control unit 43 proceeds to step S15. Determines the magnification of the review image relative to the through image.

  For example, the control unit 43 determines the magnification of the review image with respect to the through image based on the ratio of the horizontal × vertical number of pixels of the recorded image and the horizontal × vertical number of pixels of the displayable area of the LCD 38. Specifically, when the number of horizontal x vertical pixels of the recorded image is four times the number of horizontal x vertical pixels of the displayable area of the LCD 38 (for example, the number of horizontal x vertical pixels of the displayable area of the LCD 38 is When the number of pixels in the horizontal and vertical directions of the recorded image is set to 1280 × 960), the control unit 43 sets the review image magnification to the through image to 4 times (2 × horizontal and vertical). 2).

  After the process of step S15, the process proceeds to step S16, and the control unit 43 controls the image processing unit 36 to display a partial image of the recorded image four times larger than the through image. A review image, which is an image centered on the portion where the focus frame was displayed, is displayed on the LCD 38 instead of the through image. Further, the control unit 43 sets the focus frame so that a focus frame that is four times as large as the focus frame displayed in the through image is arranged at the center of the screen based on the focus frame information acquired in step S12. It is displayed on the LCD 38.

  That is, for example, if the user operates the shutter button while the through image 51a of FIG. 4 is displayed, the control unit 43 displays one of the recorded images four times larger than the through image 51a. The review image 51c, which is an image of a portion of the through image 51a and centered on the portion where the focus frame 53a was displayed, is displayed on the LCD 38, and the focus frame 53c is four times larger than the focus frame 53a. The focus frame 53c is displayed on the LCD 38 so that is positioned at the center of the screen.

  After the process of step S14 or S16, the process proceeds to step S17, and the control unit 43 determines whether or not a predetermined display time has elapsed since the review image was displayed, and it is determined that the predetermined display time has elapsed. The review image continues to be displayed until In the digital camera 31, for example, a time of about 2 seconds is set in advance as a display time from the start to the end of the display of the review image.

  If it is determined in step S16 that the predetermined display time has elapsed, the process proceeds to step S18, where the control unit 43 controls the image processing unit 36 to end the display of the review image and change the display on the LCD 38 to a through image. At the same time, the recording image is supplied to the recording medium 41 via the codec 39 and the memory controller 40 to be recorded, and the processing is terminated.

  As described above, in the digital camera 31, in the through image and the review image, the magnification of the subject of the review image with respect to the subject of the through image and the magnification of the focus frame of the review image with respect to the focus frame of the through image are the same. ing.

  As a result, the portion of the subject shown in the range surrounded by the focus frame in the through image is the same as the portion of the subject shown in the range surrounded by the focus frame in the review image. That is, the portion of the subject that is the target of focus when the recorded image is captured is accurately displayed within the focus frame of the review image. Therefore, the user can accurately grasp the subject to be focused from the review image.

  For example, in the review image, if the subject to be focused is not displayed within the range of the focus frame, the user changes the setting of the focus control mode and captures the recorded image again. It can be performed.

  In the digital camera 31, even if the number of pixels of the recorded image is not the same as the number of pixels in the displayable area of the LCD 38, the review image having the same size as the through image is displayed on the LCD 38. It can be set so that the enlarged display is not performed. If the user sets the digital camera 31 so that the enlarged display of the review image is not performed before the recorded image is captured, the control unit 43 skips step S13 after the process of step S12 in FIG. In step S14, a review image having the same size as the through image can be displayed on the LCD 38.

  In the present embodiment, the magnification for displaying the review image is determined based on the ratio between the number of pixels of the recorded image and the number of pixels in the displayable area of the LCD 38. The user may arbitrarily set it.

  In the digital camera 31, for example, in the process of recording the recording image in step S18 of FIG. 5 on the recording medium 41, the focus frame information and the focus mode information are recorded on the recording medium 41 in association with the recording image. Can do.

  As described above, by recording the focus frame information and the focus mode information on the recording medium 41 in association with the recording image, for example, the user controls the digital camera 31 and is recorded on the recording medium 41. When a recorded image is read out and displayed (reproduced) on the LCD 38, a focus frame indicating the focused range of the recorded image can be displayed by superimposing the recorded image on the LCD 38. Thus, the user can accurately grasp the subject to be focused not only when capturing an image but also when reproducing the image.

  Further, when displaying the focus frame on the LCD 38, the control unit 43 can cause the LCD 38 to display a different shape and number of focus frames for each control mode according to the focus control mode.

  Next, FIG. 6 shows a through display displayed on the LCD 38 when the focus control mode of the digital camera 31 is a center emphasis mode for focusing on a subject arranged near the center of the screen. A display example of an image or a review image is shown.

  When the focus control mode of the digital camera 31 is the center emphasis mode, a focus frame having a shape in which “+” is superimposed on a substantially rectangular frame indicating a range used for focus control is displayed.

  The through image 61a when the shutter is operated by the user (or immediately before) is shown on the upper side of FIG. 6, and a recorded image having the same size as the through image 61a is shown in the center of FIG. A review image 61b is shown, and a review image 61c, which is a part of a recorded image corresponding to an image obtained by enlarging the through image 61a four times, is shown on the lower side of FIG.

  In the through image 61a, an airplane 62a as a subject is displayed, and a focus frame 63a is superimposed on the sun 64a in front of the airplane 62a.

  In the review image 61b, an airplane 62b and a sun 64b having the same size as the airplane 62a and the sun 64a displayed in the through image 61a are displayed, and the same position and size as the focus frame 63a displayed in the through image 61a. The focus frame 63b is superimposed on the sun 64b.

  In the review image 61c, an airplane 62c and a sun 64c that are four times larger than the airplane 62a and the sun 64a displayed in the through image 61a are displayed, and the review frame 61a has a focus frame 63a displayed in the through image 61a. A four-fold larger focus frame 63c is superimposed on the sun 64c.

  In the review image 61c, only the sun 64c in front of the airplane 62c is displayed within the range of the focus frame 63c. As a result, the user confirms the review image 61c. For example, when the user wants to focus on the airplane 62a with a composition such as the through image 61a, the user moves the focus control mode to an arbitrary position, for example. It is possible to recognize that it is necessary to change to the free spot mode that can be performed.

  Next, FIG. 7 shows the focus control mode of the digital camera 31 for a subject that is relatively close to the digital camera 31 among subjects displayed in a plurality of preset areas. A display example of a through image or a review image displayed on the LCD 38 in the case of the multi mode for combining the images is shown.

When the focus control mode of the digital camera 31 is a multi-mode, for example, in a through image, five substantially rectangular focus frames 73a _{1 to} 73a ₅ indicating a range used for focus control are cross-shaped. Arranged and displayed.

  A through image 71a when the shutter is operated by the user (or immediately before) is shown on the upper side of FIG. 7, and a recorded image having the same size as the through image 71a is shown in the center of FIG. A review image 71b is shown, and a review image 71c, which is a part of a recorded image corresponding to an image obtained by enlarging the through image 71a four times, is shown on the lower side of FIG.

In the through image 71a, a substantially rectangular five focus frame 73a ₁ to 73a ₅ which shows the range used for controlling the focus are displayed are arranged in a cross shape, focus frame 73a ₅ airplanes 72a is subject are superimposed, the focus frame 73a ₃ to cloud 75a in front of the airplane 72a are superimposed.

For example, if the number of pixels in the displayable area of the LCD 38 is the same as the number of horizontal × vertical pixels of the recorded image, when the user determines the composition as in the through image 71a and operates the shutter, the digital In response to the operation of the shutter, the camera 31 displays on the LCD 38 a review image 71b on which an airplane 72b and a cloud 75b having the same size as the airplane 72a and the cloud 75a displayed on the through image 71a are displayed. In the review image 71b, of the focus frames 73b _{1 to} 73b ₅ , only the focus frame 73b ₅ superimposed on the airplane 72b and the focus frame 73b ₃ superimposed on the cloud 75b are displayed.

On the other hand, for example, if the number of horizontal × vertical pixels of the recorded image is four times the number of pixels in the displayable area of the LCD 38, when the user determines the composition as in the through image 71a and operates the shutter, the digital camera A focus frame 73a ₅ and a focus frame 73a ₃ are displayed by superimposing a part of the recorded image four times larger than the through image 71a on the through image 71a according to the operation of the shutter. Is displayed on the LCD 38 so that the midpoint between the two points is the center of the screen. In review image 71c, focus frame 73c ₅ or 73c ₃ is, to the focus frame 73a ₅ or 73a ₃ of the through image 71a, is displayed in each of the four times the size.

  Note that the processes described with reference to the flowcharts described above do not necessarily have to be processed in chronological order in the order described in the flowcharts, but are performed in parallel or individually (for example, parallel processes or objects Processing).

  The embodiments of the present invention are not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

It is a display example of a through image or a review image displayed on a display of a conventional digital camera. It is a display example of a through image or a review image displayed on a display of a conventional digital camera. It is a block diagram which shows the structural example of one Embodiment of the digital camera 31 to which this invention is applied. 3 is a display example of a through image or a review image displayed on the LCD 38 of the digital camera 31. It is a flowchart explaining the process in which the digital camera 31 of FIG. 3 captures an image. It is another example of a display of a through image or a review image. It is another example of a display of a through image or a review image.

Explanation of symbols

  31 Digital Camera, 32 Lens Unit, 33 Actuator, 34 Image Sensor, 35 A / D Circuit, 36 Image Processing Unit, 37 RAM, 38 LCD, 39 Codec, 40 Memory Controller, 41 Recording Medium, 42 Operation Key, 43 Control Unit , 44 CPU, 51a through image, 51b and c review image, 53a to 53c focus frame 53

Claims (6)

In an imaging device that captures an image and records the predetermined image captured according to a user operation as a recorded image,
An image sensor for capturing the image;
Display means for displaying the image picked up by the image pickup device and a first focus frame indicating a range used for focusing control;
Acquisition means for acquiring focus frame information indicating the position and size of the first focus frame displayed on the display means when the recorded image is captured;
A determination unit that determines a magnification of the recording image with respect to the image displayed on the display unit when the recording image is captured when the recording image is displayed on the display unit;
The display means displays the recorded image at the magnification, and based on the focus frame information, displays a second focus frame indicating a focused range in the recorded image with respect to the first focus frame. Display control means for displaying at the magnification ,
As a control mode for controlling the focus, it has a plurality of focus control modes,
The acquisition means acquires focus mode information indicating a focus control mode,
The display unit displays the first or second focus frame in a display format corresponding to each focus control mode based on the focus mode information . The imaging apparatus according to claim 1, wherein the determination unit determines the magnification based on a ratio between the number of pixels of the recorded image and the number of pixels of the display unit. The display control means has the same size as the image displayed on the display means when the recorded image is captured when the user has previously set that the recorded image should not be displayed at the magnification. The imaging apparatus according to claim 1, wherein the recorded image is displayed on the display unit, and the second focus frame is displayed on the display unit with the same size as the first focus frame. A recording control unit that records the recording image and the focus frame information in association with each other on a recording medium;
The display control means sets the second focus frame based on the focus frame information recorded on the recording medium when the recorded image read from the recording medium is displayed on the display means. The imaging device according to claim 1, wherein the imaging device is displayed on a display unit. In an imaging method of an imaging apparatus that captures an image and records the predetermined image captured according to a user operation as a recorded image,
The imaging device
An image sensor for capturing the image;
Display means for displaying the image picked up by the image pickup device and a first focus frame showing a range used for focusing control;
As a control mode for controlling the focus, it has a plurality of focus control modes,
When the recorded image is captured, focus frame information indicating the position and size of the first focus frame displayed on the display unit , and focus mode information indicating a focus control mode are acquired,
In displaying the recorded image on the display unit, a magnification of the recorded image with respect to the image displayed on the display unit when the recorded image is captured is determined;
The display means displays the recorded image at the magnification, and based on the focus frame information, displays a second focus frame indicating a focused range in the recorded image with respect to the first focus frame. the step of displaying at said magnification Te seen including,
The imaging method , wherein the display means displays the first or second focus frame in a display format corresponding to each focus control mode based on the focus mode information . In a program that causes a computer that controls an imaging device that captures an image and records the predetermined image captured in response to a user operation as a recorded image,
The imaging device
An image sensor for capturing the image;
Display means for displaying the image picked up by the image pickup device and a first focus frame showing a range used for focusing control;
As a control mode for controlling the focus, it has a plurality of focus control modes,
When the recorded image is captured, focus frame information indicating the position and size of the first focus frame displayed on the display unit , and focus mode information indicating a focus control mode are acquired,
In displaying the recorded image on the display unit, a magnification of the recorded image with respect to the image displayed on the display unit when the recorded image is captured is determined;
The display means displays the recorded image at the magnification, and based on the focus frame information, displays a second focus frame indicating a focused range in the recorded image with respect to the first focus frame. the step of displaying at said magnification Te seen including,
The display means is a program for displaying the first or second focus frame in a display format corresponding to each focus control mode based on the focus mode information .

Images