JP5454158B2 - Imaging apparatus, control method thereof, and program - Google Patents

Description

  The present invention relates to an imaging apparatus such as a digital camera, a control method thereof, and a program, and more particularly, to an imaging apparatus provided with a display unit for image reproduction, a control method thereof, and a program thereof.

  A so-called silver salt camera that captures a subject image by exposing a film to light has been used for a long time. Today, however, an electronic image pickup device such as a CCD and a storage device such as a conductor memory are used to electronically capture the subject image. An image pickup apparatus such as a so-called digital camera that records images is widely used. This electronically recorded image is precisely an image file, and is displayed on the screen of the camera or other image processing apparatus (such as a personal computer) as necessary, or printed on paper. Strictly speaking, "photograph" refers to this printed matter, but generally, an image displayed on the screen (if it was taken with a camera) is also expressed as "photograph". In this specification, the image and the photograph are not distinguished from each other.

  The first advantage of a digital camera is that it does not cost a film. In other words, the shooting cost is low, and the second is that the shooting result can be confirmed immediately on the spot. The second advantage is that it requires a display unit for image playback, but many digital cameras, except for inexpensive ones, have a display unit for previews and reviews (typically a liquid crystal display with a size of several inches). It is normal to say that most digital cameras have the first and second advantages described above.

  Now, in an imaging apparatus such as a digital camera having these two advantages, it is possible to easily take a photograph with a high degree of completeness compared to a conventional silver salt camera. This is because, from the above-mentioned first advantage, the number of photographs that can be taken is extremely large (thousands depending on the capacity of the storage device). This is because it is possible to easily perform bracket shooting that has been changed to. In addition, because of the second advantage described above, an image after photographing can be confirmed immediately on the spot, and therefore, if the user does not like it, it can be retaken again and again by trial and error.

  In this way, an imaging device such as a digital camera can be used to easily capture highly complete photos, but it is still possible to adjust the focus position that matches the shooting intention and exposure adjustment that matches the exposure of the subject. Since the troublesome operation such as the above is the same as the conventional silver halide camera, various techniques for supporting these adjustment operations have been proposed.

For example, in Patent Document 1 below, when a captured image is reproduced and displayed immediately after the image is captured, a part of the image is displayed in an enlarged manner so that the focus state can be confirmed (hereinafter referred to as Conventional Technology 1). ) Is described.
Further, in Patent Document 2 below, a target frame that can be moved to an arbitrary position is displayed on a reproduction screen of a captured image, a focusing point in the target frame is specified, and a small point is displayed at the specific position. A technique for displaying a frame (hereinafter referred to as conventional technique 2) is described.
Patent Document 3 below describes a technique (hereinafter referred to as Conventional Technology 3) in which each face is sequentially enlarged and displayed each time a predetermined button is pressed in an imaging apparatus having a face recognition function. Has been.
Patent Document 4 below describes a technique (hereinafter referred to as Conventional Technique 4) that displays a luminance distribution of a subject image in a three-dimensional graph and a contrast distribution state.
In Patent Document 5 below, when manually focusing (manual focus), an evaluation value indicating the degree of focus is obtained from the edge of the subject of the live view image, and the evaluation value is visually displayed as a bar graph. The technique (hereinafter referred to as the conventional technique 5) that is displayed on the screen is described.

JP 2000-236474 A JP 2004-242011 A Japanese Patent Laid-Open No. 2007-20029 JP 2007-155103 A JP 2002-209135 A

  However, each of the above prior arts 1 to 4 is for confirming the result of focusing or setting exposure conditions for a photographed image, and in short, only provides a “post-mortem” confirmation means. Therefore, there is a problem that if the photograph is determined to be a failed photo by the confirmation, it must be retaken. Further, since the above-described conventional technique 5 is used when performing manual focusing, there is a problem that it cannot be applied to an apparatus that automatically performs focusing (autofocus).

  A specific example will be described. Suppose now that the photographed image is confirmed to be an underexposed photograph. In this case, in general, a positive exposure correction is performed and re-shooting is performed. However, depending on an inappropriate correction amount, there is a risk that the image will again be underexposed or overexposed and become a failed photo again.

  The same applies to the focus shift. In particular, at low shutter speeds, it is easy to cause out-of-focus due to camera shake, or in the case of an imaging device that automatically selects the in-focus point, it may focus at an unintended point. Lead to failure photos.

  Accordingly, an object of the present invention is to set various parameters that affect the finish of a photograph while viewing a live view image, such as designation of a focus point, setting of exposure conditions (aperture value, shutter speed, shooting sensitivity, etc.), foreground, An object of the present invention is to provide an imaging apparatus capable of setting a background blur condition “in advance” and avoiding re-shooting as much as possible, a control method therefor, and a program therefor.

The present invention provides display control means for sequentially displaying live view images for confirmation of shooting composition, which are sequentially output from the imaging means, on the display means, and allows the user to specify an arbitrary position on the live view image, and this designated position. And an image picked up by the image pickup means so that the image state based on the predetermined viewpoint at the specified position becomes the specified image state. Shooting control means for changing the imaging condition or image processing condition when recording the image, and the shooting control means, when changing the image state at the specified position, the shooting condition at the time of imaging by the imaging means Is changed preferentially, and if this change in shooting conditions does not produce the specified image state, In the imaging apparatus characterized in that the image processing conditions of the image processing are changed, the invention according to claim 1 is a display in which a live view image for photographing composition confirmation sequentially output from the imaging means is displayed on the display means. A control unit; a specifying unit that allows a user to specify an arbitrary position on the live view image; and a user to arbitrarily specify an image state based on a predetermined viewpoint at the specified position; and the predetermined viewpoint at the specified position. Imaging control means for changing an imaging condition or an image processing condition when recording an image captured by the imaging means so that an image state based on the image becomes the designated image state. An imaging apparatus, an imaging apparatus control method, or a program.
According to another aspect of the invention, display control means for sequentially displaying live view images for confirming shooting composition sequentially output from the imaging means on the display means, and allowing a user to specify an arbitrary position on the live view image. In addition, designation means for allowing the user to arbitrarily designate an image state based on a predetermined viewpoint at the designated position, and the imaging so that the image state based on the predetermined viewpoint at the designated position becomes the designated image state. Photographing control means for changing an imaging condition or an image processing condition for recording an image picked up by the means, and the designation means has a plurality of directions in which the image state is changed on the live view image. The marker object is displayed, and the operated marker object is displayed according to the user operation on this marker object. Imaging apparatus characterized by specifying the changing image states in the direction corresponding to the extract, which is a control method or a program of an imaging device.
According to another aspect of the invention, display control means for sequentially displaying live view images for confirming shooting composition sequentially output from the imaging means on the display means, and allowing a user to specify an arbitrary position on the live view image. In addition, designation means for allowing the user to arbitrarily designate an image state based on a predetermined viewpoint at the designated position, and the imaging so that the image state based on the predetermined viewpoint at the designated position becomes the designated image state. The imaging control means for changing the imaging condition or image processing condition when recording the image captured by the means, and the captured image captured from the imaging means are divided into a plurality of areas, and for each of the divided areas, Performs two-dimensional Fourier transform or two-dimensional discrete cosine transform to obtain the distribution state of each frequency component, and the ratio of high frequency components or low frequency Image quality evaluation means for calculating an image quality evaluation value in which the ratio of components is quantified, and image quality display means for displaying the image quality evaluation value quantified for each area by the image quality evaluation means together with the live view image. An image pickup apparatus, an image pickup apparatus control method, or a program.

  According to the present invention, while viewing a live view image, various parameters that affect the finish of a photograph, such as designation of a focus point, setting of exposure conditions (aperture value, shutter speed, photographing sensitivity, etc.), foreground and background It is possible to provide an imaging apparatus that can set a blur condition and the like “in advance” and can avoid re-taking as much as possible, a control method thereof, and a program therefor.

2 is a front view and a rear view of the digital camera 1. FIG. It is an internal block block diagram of a digital camera. It is a state transition diagram of a conventionally known shooting mode and playback mode. It is a notional block diagram which shows the characteristic matter of this embodiment. It is a figure which shows an example of an interface screen. It is a figure which shows intuitive operation of the interface screen. It is a conceptual diagram of exposure correction. It is a figure which shows the relationship between color temperature and an image. It is a figure which shows the principal part flow of the control program run by CPU53a of the central control part 53. FIG. It is a conceptual diagram in the case of restoring the original image without blur from the degraded image with blur. It is a figure which shows some user interface examples for confirming the adjustment result of a blur.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings, taking application to a digital camera as an example.

  FIG. 1 is a front view and a rear view of the digital camera 1. In this figure, a digital camera 1 includes, for example, a retractable lens barrel 3, a strobe light emission window 4, an optical viewfinder front window 5, a microphone sound collecting hole 6 and the like on a front surface of a box-shaped thin camera body 2. And a power switch 7 and a shutter button 8 are arranged on the upper surface of the camera body 2, and an optical viewfinder rear window 9, a speaker loudspeaker 10, a shooting mode / playback on the rear surface of the camera body 2. A mode switch 11, zoom operation / playback display mode switch 12, MENU button 13, up / down / left / right direction move button 14, SET button 15, DISP button 16, touch panel 17, and liquid crystal panel 18 are arranged. A screw hole for fixing a tripod (not shown) and a lid 19 are provided on the bottom surface of the battery 2, and the battery 2 is placed inside the lid 19. And implementing the mass storage device 21, such as a card-type memory or a card type hard disk removable state. Further, a horizontal deep hole 22 is formed at an arbitrary position of the camera body 2 (upper position on the right side as viewed from the back in the figure), and a stylus pen for operating the touch panel 17 is formed in the deep hole 22. 23 can be accommodated.

  FIG. 2 is an internal block diagram of the digital camera. In this figure, the digital camera 1 is captured via an optical system 28 including a photographing lens 24, a zoom lens 25, a focus lens 26, a diaphragm mechanism 27 and the like housed in a lens barrel 3, and the optical system 28. From the imaging unit 30 including a two-dimensional image sensor such as a CCD or CMOS that captures an image of the subject 29, a distance measuring unit 31 such as a contrast AF method or a hybrid AF method that measures the distance to the subject 29, and the imaging unit 30 An image processing unit 32 that performs required image processing (gamma correction or the like) on the output image signal, a diaphragm driving unit 33 that drives the diaphragm mechanism 27 of the optical system 28, and a focus that drives the focus lens 26 of the optical system 28. The drive unit 34, the zoom drive unit 35 that drives the zoom lens 25 of the optical system 28, and various keys, switches, and buttons (shutter) A button 8, a shooting mode / playback mode switch 11, a zoom operation / playback display mode switch 12, a MENU button 13, an up / down / left / right movement button 14, a SET button 15, a DISP button 16, and the like) and a microphone A sound processing unit 39 including a microphone 37 attached to the back side of the sound collecting hole 6 and a speaker 38 attached to the back side of the speaker sounding hole 10, a strobe light emitting unit 40 attached to the back side of the strobe light emitting window 4, and A strobe drive unit 41, a liquid crystal drive unit 42 that drives the liquid crystal panel 18, a touch coordinate input unit 43 that captures touch coordinates on the touch panel 17, and a device data input / output unit 44 that controls data input / output of the mass storage device 21. A posture detection unit 45 that detects the posture of the digital camera 1, and a G (not shown) A GPS receiving unit 46 that receives signals from S (Global Positioning System) satellites and detects position information (at least latitude and longitude coordinate information) of the digital camera 1, and a personal computer or the like as necessary Each part of the digital camera 1 includes an external input / output unit 48 that mediates data input / output with the external device 47, a rechargeable battery 49, a charging unit 50 of the battery 49, and an external terminal 51 for charging from a commercial power source. The power supply part 52 which generate | occur | produces electric power required for this operation | movement, and the central control part 53 are provided.

  The central control unit 53 includes a computer (hereinafter referred to as CPU) 53a, a nonvolatile memory (hereinafter referred to as ROM) 53b, a volatile memory (hereinafter referred to as RAM) 53c, and a rewritable nonvolatile memory (hereinafter referred to as PROM) 53d. The control program stored in the ROM 53b and the data previously or arbitrarily written in the PROM 53d are loaded into the RAM 53c and executed by the CPU 53a, that is, the operation of each part of the digital camera 1 is controlled by the program control method. Although it controls, it is not limited to this system (program control system). All or part of the function may be realized by hard logic.

  The illustrated digital camera 1 operates in the shooting mode (still image or moving image shooting mode) when the shooting mode / playback mode switch 11 of the operation unit 36 is in the “shooting” position, and when in the “playback” position. Operates in playback mode.

  When the still image or moving image shooting mode is selected, the image signal output periodically (several tens of frames per second) from the imaging unit 30 passes through the image processing unit 32, the central control unit 53, and the liquid crystal driving unit 42, and the liquid crystal panel 18 And is continuously displayed as a live view image for composition confirmation (also referred to as a through image). In general, the photographer adjusts the shooting direction and the angle of view of the imaging unit 30 (the zoom amount of the zoom lens 25) so as to obtain a desired composition while viewing a live view image, and when a desired composition is obtained. A release operation (depressing the shutter button 8) is performed. At this time, if necessary, selection of a shooting program (so-called best shot) suitable for the shooting scene, exposure correction that seems appropriate, and the like may be performed before the release operation.

  Then, in response to the release operation, AF (automatic focus) processing of the focus lens 26, AE (automatic exposure) processing of the aperture mechanism 27, and the like are executed, and a high-quality image signal is extracted from the imaging unit 30. The image signal is sent to the mass storage device 21 via the image processing unit 32, the central control unit 53, and the device data input / output unit 44, and is recorded and saved in the mass storage device 21 as a captured image. The captured image may be a raw image (RAW image) corresponding to a high-quality, high-resolution image signal extracted from the imaging unit 30, but the raw image has a large size and is stored in the mass storage device 21. Since the storage capacity is compressed, the user can arbitrarily specify the image size (resolution) at the time of recording, and thin out the pixels of the raw image or add multiple pixels so that this specified image size (resolution) will be achieved. Is going. In order to reduce the image size without reducing the resolution, it is desirable to record an image compressed using a general-purpose compression technique such as JPEG (Joint Photographic Experts Group) as a captured image.

  On the other hand, when the playback mode is selected, for example, the most recently captured image is read from the large-capacity storage device 21 and displayed on the liquid crystal panel 18, or a reduced image of the captured image is read from the large-capacity storage device 21. The data is read and displayed in a list on the liquid crystal panel 18, and an original image of an image selected by a user operation from the list (an image that the user desires to reproduce) is read from the mass storage device 21 and displayed on the liquid crystal panel 18. The display resolution of the liquid crystal panel 18 is lower than the resolution at the time of imaging by the imaging unit 30 and lower than the resolution at the time of recording when recording and recording for general purposes. In the case of display, display is performed after thinning out pixels or adding a plurality of pixels to match the resolution of the display unit. The same applies when a live view image to be described later is displayed.

The operations in the above shooting mode and playback mode are conventionally known.
FIG. 3 is a state transition diagram between a conventionally known shooting mode and playback mode. In this figure, when the power of the digital camera 1 is turned on, the state P1 (operation mode determination state) is reached. In this state P1, the current position of the shooting mode / playback mode switch 11 is determined, and the state P2 is determined according to the determination result. Transition is made to either (shooting mode state) or state P3 (playback mode state).

  In the state P2, the live view image is continuously displayed on the liquid crystal panel 18, and various shooting parameter settings based on the user operation, for example, the adjustment of the zoom magnification (state P4) and the shooting program (for example, portrait shooting) , Landscape shooting, sports scene shooting, indoor shooting, night scene shooting,...) Selection (state P5), exposure correction (state P6), and the like. When setting of necessary shooting parameters is completed and a desired composition is obtained, the state is changed from the state P7 (image recording state) to the state P8 (display state of the confirmation image) in response to the shutter release by the photographer. It transits and returns to the state P2 again through the state P1.

  Usually, the image check after shooting is performed in the state P8, but generally the time of the state P8 is about several seconds, so if you want to evaluate the shot image over time, The shooting mode / playback mode switch 11 is switched from “shooting” to “playback” and transitioned to the state P3 (playback mode state) to evaluate the time-consuming image.

  As a result of the image evaluation, if it is determined that the intended finish is not achieved, the shooting mode / playback mode switching switch 11 is switched from “playback” to “shooting”, and the state is again shifted to the state P2. Repeat the above shooting operation again. That is, the image is “re-taken”.

  As explained at the beginning, digital cameras have the advantage that they can take any number of photos without worrying about cost. Therefore, there is no particular inconvenience in the “re-shooting” itself. You can re-shoot as many times as you like until you get the finish you want. However, such a re-shooting technique is trial and error and is not very smart.

  Therefore, in the present embodiment, before the actual shooting, various shooting parameters that affect the finish of the photo can be set in advance, so that it is possible to prevent trial and error reshooting as much as possible. Provide photography support technology.

  FIG. 4 is a conceptual configuration diagram illustrating the characteristic items of the present embodiment. In this figure, the central control unit 53 includes several block units functionally realized by a program control method, specifically, a shooting parameter setting interface unit 54, a blur correction unit 55, an exposure correction unit 56, a blur adjustment. An image processing unit 57, a color temperature correction unit 58, a focus point setting unit 59, and the like are included.

  The shooting parameter setting interface unit 54 sets various shooting parameters to be set on the liquid crystal panel 18 displaying the live view image before the actual shooting, for example, (1) blurring of foreground and background (hereinafter referred to as blur). (2) Exposure correction to indicate whether the brightness of the photo is properly exposed or under (low key) or over (high key), (3) Color temperature indicating the color tone of the photo (so-called white balance So, for example, a high temperature that is bluish in the early morning, a low temperature that is reddish in the evening, ...), and an intuitive interface screen for comprehensively setting the position of the focus point, etc. indicate.

  FIG. 5 is a diagram illustrating an example of an interface screen. In this figure, an interface screen 60 has a plurality of switch objects (touch operation on the touch panel 18 or vertical / horizontal movement of the operation unit 36) appropriately arranged around the live view image display area 61 (right side and lower side in the figure). A button that is turned on in response to either the cursor movement by the button 14 or the pressing operation of the SET button 15). For example, the three switch objects 62 to 64 arranged vertically on the right side are respectively given the titles “large blur”, “middle blur”, and “small blur” in order from the top. The switch 62, the blurring switch 63, and the small blur switch 64 will be referred to.

  In addition, the four switch objects 65 to 68 arranged on the left and right are respectively titled “Black Standard”, “White Standard”, “Focus”, and “Color Temperature” in order from the left. These are referred to as a black reference switch 65, a white reference switch 66, a focus switch 67, and a color temperature switch 68, respectively. Note that a triangle symbol pointing to the left and right is attached to both sides of the title of the color temperature switch 68, and the color temperature switch 68 can be set by selectively operating the left end or the right end. Color temperature) is a so-called seesaw type switch object that can be decreased or increased linearly or stepwise by a predetermined amount.

Here, “intuitive operation” on the illustrated interface screen 60 will be described.
FIG. 6 is a diagram illustrating an intuitive operation of the interface screen 60. In this figure, (a) is an example of a live view image 69. This live view image 69 is displayed in the live view image display area 61 of the interface screen 60. Incidentally, in the live view image 69, a waterfall flowing in a curtain form from a horizontally long cliff, a stagnation under the waterfall, trees on the waterfall, and the like are reflected as subjects. Note that (b) shows the interface screen 60 in a state where the live view image 69 is displayed, but in this figure (b), the live view image 69 is represented by a simplified line drawing for the sake of drawing. .

  In (b), several marker objects (designed indices; hereinafter simply referred to as markers) are displayed on the live view image 69 of the interface screen 60. The double circle markers are large, medium, and small blur markers 62a, 63a, and 64a, the two rhombus markers are the black reference marker 65a and the white reference marker 66a, respectively, and the cross-shaped marker is the focus point marker 67a.

  Note that the size of the double circles of the blur markers 62a, 63a, and 64a is different from the large, medium, and small sizes, and “blur large”, “middle blur”, and “small blur” are represented by them. Further, the difference between the black reference marker 65a and the white reference marker 66a is in the color within the diamond frame, the black reference marker 65a is black (or a color tone that images black), and the white reference marker 66a is white (or a color tone that images white). )It has become.

  The blur markers 62a, 63a, 64a, the black reference marker 65a, and the white reference marker 66a designed in this way are related to “blur” or black according to the shape, size, and color of the marker. You can intuitively know whether it is related to "exposure correction" such as the standard or white standard. The cross-shaped focus point marker 67a is known to represent the focus point by its cross position, but there is no difference in the intuitive marker style.

  As described above, the markers 62a, 63a, 64a, 65a, 66a, and 67a of the present embodiment are all appropriately designed so that the meaning of these markers can be intuitively understood. Of course, it is not limited to the design. In other words, the markers 62a, 63a, 64a, 65a, 66a, and 67a shown in the figure are designed with the intention of “being able to know the meaning of these markers intuitively”, and are merely examples. Of course, other designs may be used as long as they meet this purpose (intuitively know the meaning of those markers).

  Explaining how to use each marker, first, three types of blur markers 62a, 63a, 64a appear on the live view image 69 of the interface screen 60 when the corresponding switch objects 62, 63, 64 are operated. The initial position of the occurrence is preferably near the corresponding switch object 62, 63, 64. For example, if the large blur marker 62a is displayed immediately next to the large blur switch 62 when the large blur switch 62 is operated, the relationship between the large blur switch 62 and the large blur marker 62a is intuitively understood. It is preferable because it can be known. The same applies to the other switches 63 and 64 and the markers 63a and 64a.

  The photographer operates the touch panel 18 or the up / down / left / right direction movement button 14 to move the large blur marker 62a to a desired position, and performs a determination operation (double touch operation on the touch panel 18 or operation of the SET button 15). Do. Here, the “desired position” is a position (or place) where a large blur is to be given to the foreground or background. This position is a position (or place) where it is desired to give a medium degree of blur when blurring, or a position (or place) where a small blur is desired when blurring is small. It should be noted that each of the positions where the large, medium, and small blurs may be given may be one place or plural places.

  In the above operation example, after displaying a desired marker by operating the switch object, it is possible to specify a desired image state for a desired position by moving the displayed marker. The marker may not be displayed when the switch operation is performed, but may be displayed at the position where the touch operation is performed after the touch operation on the touch panel is performed.

  In the above operation example, the switch object and the marker are provided corresponding to the absolute value of the blur amount that is large, medium, and small. However, the switch object and the marker have a blur amount that increases or decreases the blur. It may be provided corresponding to the change direction, and the blur amount at the position designated by these markers may be increased or decreased with respect to the current blur amount at that position. Also, a switch object or marker is provided corresponding to the amount of change in the blur amount, such as increasing the blur by one level and decreasing the blur by three levels, so that the blur amount at the specified position is increased or decreased by the specified amount. It may be.

  In the case of a general photographing technique, the blur is adjusted by the aperture value of the lens. This is because the blur is increased when the aperture is opened, and the blur is decreased when the aperture is reduced. Also in the present embodiment, the large / medium / small of the blur may be controlled by this aperture adjustment. In other words, the positions of the large, medium, and small marks 62a, 63a, and 64a of the blur are detected, and the amount of blur at those positions is appropriate (if the blur large mark 62 is at the position of the large blur and the blur mark 62b). In other words, the lens aperture may be automatically adjusted so that the blur is small at the position of medium blur or small blur mark 62c.

  However, since the aperture is also related to exposure correction, it is not possible to simply set the aperture value = the amount of blur. This is because exposure correction generally takes priority over blur adjustment. First, determine the exposure correction amount (aperture value correction amount), and then fine-tune the aperture value to suit the blur if there is a margin. Because it steps on. As described above, when viewed as an actual problem, it is not appropriate to use the aperture value for blur adjustment. For this reason, in this embodiment, the large, medium, and small blurs are controlled by image processing without using a diaphragm. However, this is because it is intended for practical use, and of course, “aperture value” may be used for blur adjustment. Note that a blur adjustment method by image processing will be described later.

  In the above operation example, the shooting conditions and the contents of the image processing are determined so that the image state at the position specified by one or more markers is in the specified state, but the focus on the main subject in the image is maintained. In such a state (with no blur of the main subject), only the image state of each part specified by the marker may be adjusted. Further, in this case, the focus may be maintained with the main subject as the face of the person and with the face portion of the person detected by a known face detection technique as the main subject.

  According to the interface screen 60 of the present embodiment, when the amount of blur at an arbitrary position in the live view image 69 is to be adjusted, it is only necessary to place one of the large, medium, and small marks 62a, 63a, and 64a of the blur at that position. It is possible to provide a bokeh setting interface that is simple and excellent in intuition.

  Next, the black reference marker 65a and the white reference marker 66a also appear on the live view image 69 on the interface screen 60 when the corresponding switch objects 65 and 66 are operated. The initial position of the appearance is preferably in the vicinity of the corresponding switch object 65, 66, like the blur markers 62a, 63a, 64a. For example, when the black reference switch 65 is operated, if the black reference marker 65a is displayed immediately above the black reference switch 65, the relationship between the black reference switch 65 and the black reference marker 65a can be intuitively known. To preferred. The same applies to the other switches 66 and the marker 66a.

  Which part of the black reference marker 65a and the white reference marker 66a is used as an exposure black reference (also referred to as a dark reference) or a white reference (also referred to as a bright reference) in the live view image 69? This designation is arbitrarily made according to the photographer's desire (photo finish expectation). For example, when the dark eye finish (so-called low key tone or simply low key) is expected, the black reference marker 65a is aligned with the dark portion in the live view image 69, or the bright eye finish (so-called high key tone or simply high key). Is expected, the white reference marker 66 a is aligned with the bright part in the live view image 69. Alternatively, in the case of expecting a so-called appropriate exposure finish that reproduces the entire dark area to the bright area, the black reference marker 65a is aligned with the dark area in the live view image 69, and the bright area in the live view image 69 is displayed. The white reference marker 66a is aligned.

  In general, “dark part” and “bright part” refer to the darkest part or the brightest part in an image, but this may not always be true depending on the purpose of photographing. For example, a part slightly brighter than the darkest part may be a dark part, and a part slightly darker than the brightest part may be a bright part. In any case, the specification of the dark part reference and the bright part reference in the exposure correction is entirely based on the subjectivity of the photographer.

  FIG. 7 is a conceptual diagram of exposure correction. In this figure, the histogram 70 shows the brightness distribution of the pixel values of the live view image 69. The left side of the horizontal axis is dark, the right side is bright, and the height of the graph 71 is the horizontal axis. The amount of pixels in

  In the figure, (a) is a histogram 70 for proper exposure, (b) is a histogram 70 for low key, and (c) is a histogram 70 for high key. That is, the histogram 70 in (a) is obtained when the black reference marker 65 a is aligned with the dark portion in the live view image 69 and the white reference marker 66 a is aligned with the bright portion in the live view image 69. The histogram 70 at this time is appropriate exposure because there is no lack of dark parts or life parts, and the dark to bright parts are reproduced evenly.

  On the other hand, the histogram 70 of (b) is obtained when the black reference marker 65a is aligned with the dark part in the live view image 69, and the exposure correction in the negative direction is performed based on the dark part. . That is, the graph 71 is moved by an appropriate amount in the left direction indicated by the arrow 72 so that the brightness designated by the black reference marker 65a (the dark portion in this figure) becomes a reference. Such a minus correction is a low-key tone correction that darkens an image, and is, for example, a photographing technique that is often used to express silence, moist feeling, or weight.

  Similarly, the histogram 70 in (c) is obtained when the white reference marker 66a is aligned with the bright part in the live view image 69, and the positive exposure correction is performed with the bright part as a reference. . That is, the graph 71 is moved by an appropriate amount in the right direction indicated by the arrow 73 so that the brightness designated by the white reference marker 66a (in this figure, the bright portion) becomes a reference. Such a positive correction is a high-key tone correction that brightens an image, and is, for example, a photographing technique often used to express lightness, youth, and the like.

  In these figures, both ends of the histogram 70 are used as a black reference and a white reference, but this is merely a typical example of exposure correction. As described above, the specification of the dark part reference and the bright part reference in the exposure correction is mainly based on the subjectivity of the photographer, and therefore, an appropriate position (position arbitrarily designated by the photographer) entering from the both ends of the histogram 70. May be used as the black standard and the white standard, respectively.

  Conventionally, the exposure compensation method is to operate an exposure compensation button provided on the camera body or an exposure compensation button displayed on the liquid crystal panel 18, and these buttons are operated in the minus direction. The exposure correction (equivalent to FIG. 7B) or the positive exposure correction (equivalent to FIG. 7C) is performed. It is also true that no exposure compensation is performed by troublesome button operations. Although the reason for this is not necessarily clear, it is thought that a major factor is that it is not immediately possible to know how much correction amount and in which direction (plus / minus) it should be corrected.

  In this regard, according to the interface screen 60 of the present embodiment, the black reference marker 65a and the white reference marker 66a are simply placed at an arbitrary brightness portion in the live view image 69, as shown in FIG. Appropriate exposure, low key tone as shown in (b), or high key tone as shown in (c) can be freely obtained, and during that time, exposure compensation amount and direction (plus / minus) are completely unaware. Therefore, it is possible to provide an intuitive interface for exposure compensation that anyone can easily use.

  Next, the color temperature switch 68 is used to increase or decrease the color temperature of the color image. When the right side of the color temperature switch 68 is operated, the color temperature increases, and when the left side is operated, the color temperature decreases.

  In general, when a black object is heated, it becomes dark orange when the temperature is low, becomes yellowish white as the temperature increases, and becomes bluish white when the temperature is higher. In this way, the color white can be expressed by the temperature of a black body, this temperature is called the color temperature, and the unit is K (Kelvin). For example, clear sky skylight is 12000K-18000K, clear sky northward sky is 10000K-12000K, haze sky is 8000K-10000K, whole cloud skylight is 6500K-7000K, average daylight is 5000K-6000K, morning and evening outdoors is 4400K -5400K, 3600K-4000K before and after sunrise, 4200K-6500K for fluorescent lamps, 2800K-2800K for bulbs, 2800K-3400K for photographic tungsten, 2600K-2800K for tungsten lights. The higher the temperature, the stronger the blueness, and the lower the temperature, the stronger the redness.

  As for the color temperature of the light source at the time of taking a picture, for example, a standard value of 3200K for studio photography light, 6000K for strobe light, 5500K for sunlight, etc. is set. Although the white balance function allows color temperature correction to suit the shooting environment, auto white balance may malfunction in multi-flash shooting environments where various light sources are mixed, resulting in unintended color tone. Often happens.

  In such a case, manual adjustment of white balance by the photographer is indispensable. For this reason, many cameras are equipped with correction buttons that allow you to select the color temperature, such as “strobe”, “sunlight”, “incandescent light bulb”, and “fluorescent light”. Lacks accuracy. The selection items such as “strobe”, “sunlight”, “incandescent light bulb”, and “fluorescent light” are roughly divided light source types, and the color temperature in the actual shooting scene is, for example, the same sunlight However, it is different depending on the time zone, and fluorescent lamps and the like emit light of various wavelengths (light having different color temperatures) such as daylight color and white light.

  On the other hand, according to the interface screen 60 of the present embodiment, it is only necessary to operate the color temperature switch 68 while viewing the live view image 69. For example, if it is desired to enhance the blueness of the live view image 69, the color temperature switch 68 It is only necessary to operate the right side of the color temperature switch 68 or to operate the right side of the color temperature switch 68 to enhance redness. Since the color temperature can be adjusted in real time while checking the image, it is not necessary to know the color temperature of the light source on the spot, and the subtle color adjustment can be easily performed by the number of operations of the color temperature switch 68. It is possible to provide an intuitive color temperature correction interface that anyone can easily use.

  FIG. 8 is a diagram illustrating the relationship between the color temperature and the image. In this figure, three representative images 69a to 69c are respectively shown in order from the left: (a) a reddish-enhanced image 69a with a lower color temperature; (b) an image 69b with an appropriate color temperature; (C) A bluish-enhanced image 69c with a higher color temperature. Note that. Since the application drawing cannot be colored, the color is expressed by hatching for convenience.

  A typical successful photograph is an image 69b having an appropriate color temperature of (b). However, depending on the photographer's intention, an image 69a having a strong reddish color (a) or an image 69c having a strong bluish color (c). May be regarded as a success photo. This is because the image 69a having a strong reddish color (a) can express warmth and the like, and the image 69c having a strong bluish color (c) can express sharpness and coolness. Usually, when you want to obtain a photo with a different color, you can intentionally change the white balance (for example, select “Incandescent Light Bulb” under sunlight) or enter the color temperature directly. In the case of a camera of the type, it is necessary to input a desired color temperature, which is quite troublesome. However, according to the interface screen 60 of this embodiment, the color temperature is viewed while viewing the live view image 69. Since it is only necessary to operate the switch 68, anyone can easily obtain a photograph of a desired color.

Next, the operation of this embodiment will be described.
FIG. 9 is a diagram showing a main part flow of a control program executed by the CPU 53 a of the central control unit 53. In this figure, when the power of the digital camera 1 is turned on, first, the current operation mode is determined from the switching position of the shooting mode / playback mode switch 11 (step S1), and the “playback mode” is determined. Then, the process proceeds to a reproduction mode process (not shown), and when the “shooting mode” is determined, the process proceeds to the acquisition of the live view image (step S2) and the display of the interface screen 60 (see FIG. 5) (step S3).

  The photographer's operation on each switch object (large blur switch 62, blurred switch 63, small blur switch 64, black reference switch 65, white reference switch 66, focus switch 67, and color temperature switch 68) on the interface screen 60. (Step S4) and processing corresponding to each operation type is executed.

  That is, when the large blur switch 62, the middle blur switch 63, or the smaller blur switch 64 is operated, the large blur medium / small control (step S5) is executed, and when the black reference switch 65 or the white reference switch 66 is operated. When exposure correction control (step S6) is executed and the focus switch 67 is operated, focus point control (step S7) is executed. When the color temperature switch 68 is operated, white balance control (step S8) is executed. ).

  When a predetermined shooting preparation completion operation (for example, a shooting preparation completion button operation (not shown)) is performed on the interface screen 60, the process waits until a shutter release operation is performed (step S9), and the shutter release operation is performed. In such a case, after taking an image and storing the image in the mass storage device 61 (step S10), the confirmation image is displayed on the liquid crystal panel 18 for a predetermined time (step S11), and the process returns to step S1 again. However, at this time, before the captured image is stored in the large-capacity storage device 61 (step S10) or after the storage, the necessary correction is performed on the captured image.

  Here, “required correction” is the same as the correction performed on the live view image 69 described above. That is, when the blur large / medium / small correction is performed on the live view image 69, the same blur large / small correction is performed on the captured image, and the color temperature is corrected on the live view image 69. If correction has been performed, the same color temperature correction is performed on this captured image. However, if exposure correction has been performed on the live view image 69, the same exposure correction has already been performed in the actual shooting stage during shutter release (similar to the exposure correction performed on the live view image 69). Therefore, this exposure correction is not included in the above “required correction” in the step S10.

<Defocus large / small control>
As described above, the blur large / medium / small control in this embodiment can also be performed by image processing. Various image processing methods for adjusting the blurring effect of the image are known, and various image blurring filters are generally known for the image correction processing in the direction of increasing the blurring of the image. Therefore, although detailed description here is omitted, any method may be used.

Also, image correction processing in a direction to reduce image blur is generally known as a sharpness filter and the like, and particularly has high reproducibility when restoring an original image without blur from a degraded image with blur. Several methods are also known.
An outline of a highly reproducible method for restoring an original image without blur from a blurred image with blur will be described below. However, since these techniques are well known, detailed description is omitted.

  FIG. 10 is a conceptual diagram in the case of restoring an original image without blur from a degraded image with blur. In this figure, when the luminance of the pixel at the coordinates (x, y) of the image 74 is g [x, y], basically, the blurred image g (x, y) with blur and the original image i without blur. (X, y) is represented by the relationship g (x, y) = p (x, y) * i (x, y). Here, p (x, y) is an image conversion function such as PSF (point spread function or point spread function), and “*” represents convolution j (convolution integration).

  If p (x, y) can be obtained, the original image i (x, y) without blur is restored from the blurred degraded image g (x, y) by the inverse function of p (x, y). be able to.

  As a method for estimating p (x, y), for example, a PSF (Point Spread Function / point spread function, point spread function) method can be used. In this PSF method, a Fourier transform image is obtained by applying Fourier transform (FFT) and discrete Fourier transform (DFT) to a deteriorated image (target image whose blur is to be adjusted), and blur or blur is determined from the shape of the Fourier transform image. General-purpose images with no blurring, straight-line blurring image including straight blurring in one direction, composite image including straight-line blurring and out-of-focus blur, and out-of-focus blur image are extracted. To evaluate the PSF function. Furthermore, image restoration processing is performed in which blurring and blurring are corrected based on the inverse function of the PSF function. By appropriately adjusting calculation parameters used during that time, the size of the blur (large, medium, and small) is controlled. Control) can be performed freely.

  Other known methods for estimating the image conversion function p (x, y) based on one image include a zero-cross method, a Hough transform method (Hough transform method), and an inverse filter method. As a method for estimating p (x, y), which is an image conversion function, based on a plurality of images, a plurality of images taken by an imaging unit in which a plurality of small lenses such as a lenticular killer lens are arranged are used. A technique for correcting image blur is also known, but any method can be used.

  Note that, as described above, the blur adjustment is performed with priority given to the correction based on the shooting conditions when the imaging unit performs imaging, rather than such image processing. The correction based on this shooting condition adjusts the focus distance by moving the focus lens, or adjusts the aperture value (opening amount of the aperture mechanism 27) of the optical lens to increase or decrease the depth of field. The size may be adjusted. This is because background and foreground parts other than the depth of field can be blurred. The idea of the present invention is to perform intuitive blur adjustment using the interface screen 60. Therefore, the method of blur adjustment is not limited. It may be based on image processing, may be based on aperture value adjustment, or may be a combination thereof.

  As described above, since the resolution of the display unit is lower than the resolution of the image at the time of image capture or recording, just looking at the normal live view image will cause subtle blurring of the image actually captured or recorded. Can not be confirmed. Therefore, in order to confirm in detail which part of the shot image is blurred before adjusting the blur, and to check the blur adjustment result in detail after adjusting the blur, The following user interface may be provided.

  FIG. 11 is a diagram illustrating several user interface examples for confirming the blur adjustment result. In this figure, (a) shows a live view image 75 and an enlarged display area 77 of a focus point 76 displayed superimposed on the live view image 75. The enlarged display area 77 may simply display a partial image surrounded by the focus point 76 in an enlarged manner, but for example, the following example is preferable.

  (B) shows a first example. In this example, the enlarged display area 77 is divided into fine cells and each cell is filled with a predetermined image quality evaluation value. The image quality evaluation value in the first example is a numerical value representing a frequency component for each pixel (or a plurality of pixels) constituting the captured image corresponding to the live view image 75. For example, the captured image corresponding to the live view image 75 It is divided into a plurality of regions (one pixel unit or a plurality of pixel units), and each divided region is subjected to a two-dimensional Fourier transform or a two-dimensional discrete cosine transform to obtain a distribution state of each frequency component. The ratio or the ratio of low frequency components is quantified. In general, the frequency component for each pixel (or a plurality of pixels) has a property that correlates with the degree of blurring (the lower the blur, the higher the blur, the higher the blur). It is preferable that the degree of blurring can be quantitatively grasped only by visually confirming the digitized image quality evaluation value. In (b), the enlarged image of the focus point 76 may be superimposed and displayed together with the digitized image quality evaluation value. It is further preferable because the actual image and the degree of blur can be compared and contrasted.

  (C) shows a second example. The difference from the first example is that color-coded or pattern-divided image quality evaluation values are used instead of the digitized image quality evaluation values. In other words, the image quality evaluation values (quantized values) in the first example are color-coded or filled patterns, and how much blur is adjusted in this way Is more preferable because it can be understood intuitively. In the second example as well, an enlarged image of the focus point 76 may be superimposed and displayed together with the image quality evaluation values that have been color-coded or patterned.

<Exposure compensation control>
The exposure correction control process is a process for determining an exposure correction amount adapted to the black standard and / or the white standard intuitively specified using the interface screen 60, and the specific method is not limited. For example, the desired exposure correction amount may be determined by changing the aperture value, or the desired exposure correction amount may be determined by changing the shutter speed. Alternatively, a desired exposure correction amount may be determined by changing photographing sensitivity (ISO sensitivity). Further, they may be used in combination.

<Focus point control>
The focus point control process is a process for focusing on the cross-cross portion of the focus marker 67a. For example, the distance to the portion is measured by the distance measuring unit 31, and the focus driving unit 34 is controlled based on the measurement result. It may be driven to adjust the front / rear position of the focus lens of the optical system.

<White balance control>
The white balance control process is a process for determining a white balance correction amount suitable for the color temperature intuitively specified using the interface screen 60. For example, the white balance correction is performed by the image processing unit 32. If this is the case, the image processing unit 32 is provided with a color temperature value that is intuitively specified using the interface screen 60 or a value correlated therewith, so that the target value is obtained. The white balance may be corrected at 32.

  As described above, according to the present embodiment, (a) large / medium / small designation of blur for an arbitrary place in a live view image, and (b) exposure correction using an arbitrary brightness portion in a live view image as a black reference or a white reference. Intuition that allows the photographer to easily and comprehensively set various parameters that affect the finish of the photo, such as designation and (c) color temperature correction specification while viewing the live view image "before the actual shooting" Therefore, it is possible to provide a smart shooting support technology that can avoid re-taking as much as possible.

1 Digital camera (imaging device)
18 Liquid crystal panel (display means)
30 Imaging unit (imaging means)
53 Central control unit (display control means, first correction means, second correction means, restoration means, image quality evaluation means, image quality display means, identification means)
60 Interface screen (user interface)
62 Bokeh large switch (switch object)
63 Out of focus switch (switch object)
64 Bokeh small switch (switch object)
65 Black reference switch (switch object)
66 White reference switch (switch object)
67 Focus switch (switch object)
68 Color temperature switch (switch object)
62a Blur marker (marker object)
63a Blur marker (marker object)
64a Blur marker (marker object)
65a Black reference marker (marker object)
66a White reference marker (marker object)
69 Live View image

Claims (23)

Display control means for sequentially displaying on the display means live view images for confirmation of shooting composition that are sequentially output from the imaging means;
Designating means for allowing the user to designate an arbitrary position on the live view image and for allowing the user to arbitrarily designate an image state based on a predetermined viewpoint at the designated position;
An imaging control unit that changes an imaging condition or an image processing condition when recording an image captured by the imaging unit so that an image state based on the predetermined viewpoint at the specified position becomes the specified image state;
With
When changing the image state at the specified position, the shooting control unit preferentially changes shooting conditions at the time of shooting by the imaging unit, and the change of the shooting conditions causes the designated image state to be obtained. An image pickup apparatus that changes image processing conditions for image processing performed before recording of a captured image when it cannot be performed . The designation means allows the image state based on the predetermined viewpoint to be arbitrarily designated independently for each of a plurality of designated positions arbitrarily designated on the live view image,
The imaging control unit changes an imaging condition or an image processing condition when recording an image captured by the imaging unit so that each of the image states of the plurality of designated positions becomes an independently designated image state. The imaging apparatus according to claim 1, wherein: The designation means allows a user to designate a direction and an amount to change an image state based on the predetermined viewpoint at the designated position with respect to an image state at the time of designation,
The imaging control means is an imaging condition or image when recording an image taken by the imaging means so that an image state based on a predetermined viewpoint at the designated position changes by a designated amount in the designated direction. The imaging apparatus according to claim 1, wherein processing conditions are changed. The imaging control unit preferentially changes a focus distance and an aperture value related to a depth of field at the time of imaging by the imaging unit when changing the degree of blur at the designated position, and sets the focus distance and the aperture value. 4. The imaging apparatus according to claim 1 , wherein when the change cannot make the designated image state, the image processing condition of the image processing to be performed before recording the captured image is changed. An image conversion function that converts an original image without blur into a degraded image with blur is estimated when the captured image captured from the imaging unit is a degraded image, and the estimated image conversion function is inversely converted. Further comprising a restoring means for generating a restored image by converting the captured image by an inverse image conversion function;
The image capturing control unit performs image processing for correcting the amount of blur based on the restored image generated by the restoration unit when performing correction in a direction to reduce blur on the target image. The imaging apparatus according to claim 4 . The restoring means, claims and estimates the inverse image transform function based on the Fourier transform image subjected to two-dimensional Fourier transform or two-dimensional discrete cosine transform on the captured image captured by the image capturing unit (11-18) Item 6. The imaging device according to Item 5 . Display control means for sequentially displaying on the display means live view images for confirmation of shooting composition that are sequentially output from the imaging means;
Designating means for allowing the user to designate an arbitrary position on the live view image and for allowing the user to arbitrarily designate an image state based on a predetermined viewpoint at the designated position;
An imaging control unit that changes an imaging condition or an image processing condition when recording an image captured by the imaging unit so that an image state based on the predetermined viewpoint at the specified position becomes the specified image state;
With
The designation means displays a plurality of marker objects having different directions for changing the image state on the live view image, and a direction corresponding to the operated marker object in response to a user operation on the marker object. imaging apparatus characterized by specifying the changing image states. The imaging apparatus according to claim 7 , wherein the designation unit designates an amount by which the image state is changed depending on the number of operations on the marker object. Display control means for sequentially displaying on the display means live view images for confirmation of shooting composition that are sequentially output from the imaging means;
Designating means for allowing the user to designate an arbitrary position on the live view image and for allowing the user to arbitrarily designate an image state based on a predetermined viewpoint at the designated position;
An imaging control unit that changes an imaging condition or an image processing condition when recording an image captured by the imaging unit so that an image state based on the predetermined viewpoint at the specified position becomes the specified image state;
The captured image captured from the imaging unit is divided into a plurality of regions, and each divided region is subjected to two-dimensional Fourier transform or two-dimensional discrete cosine transform to obtain a distribution state of each frequency component, thereby obtaining a high-frequency component An image quality evaluation means for calculating an image quality evaluation value obtained by quantifying the ratio of low frequency components or
An image pickup apparatus comprising: image quality display means for displaying an image quality evaluation value digitized for each area by the image quality evaluation means together with the live view image. In the captured image captured from the imaging means, further comprising a specifying means for specifying a position that is a calculation target of the image quality evaluation value by the image quality evaluation means,
The image quality evaluation means calculates the image quality evaluation value for a plurality of regions including the position specified by the specifying means,
The image pickup apparatus according to claim 9 , wherein the image quality display unit displays the image quality evaluation value digitized for each region by the image quality evaluation unit in an enlarged manner in a grid pattern. 11. The image pickup apparatus according to claim 10 , wherein the image quality display means converts an image quality evaluation value corresponding to each area into a color or a pattern and displays it in each grid. The designation means, for each of a plurality of designated positions arbitrarily designated on the live view image, to arbitrarily designate the direction and amount to change the image state independently,
The imaging control means sets an imaging condition or an image processing condition when recording an image captured by the imaging means so that an image state of each of the plurality of designated positions independently changes by a designated amount in a designated direction. The imaging apparatus according to claim 1 , wherein the imaging apparatus is changed. The imaging control unit further displays an image captured by the imaging unit as the live view image so that an image state based on a predetermined viewpoint at the specified position changes by a specified amount in the specified direction. The imaging apparatus according to claim 1, wherein an imaging condition or an image processing condition at the time of changing is changed. The predetermined viewpoint is a blurred state of a captured image,
It said designation means, one of the claims 1 to 13, characterized in that the specified amount of change and of changing direction to increase or decrease the blur amount to the blurriness of the captured image is specified in the specified position the user An imaging apparatus according to claim 1. The imaging device according to claim 1 , wherein the designation unit causes the user to arbitrarily designate the predetermined viewpoint. The predetermined viewpoint includes the brightness of the captured image,
16. The device according to claim 1 , wherein the designating unit causes the user to designate a change direction and a change amount as to whether the brightness is increased or decreased with respect to the brightness of the captured image at the time of designation at the designated position. An imaging apparatus according to claim 1. The predetermined viewpoint is a color temperature of a captured image,
It said designation means, one of the claims 1 to 16, characterized in that the specified amount of change and of changing direction to increase or decrease the color temperature to the color temperature is specified in the captured image in the designated position on the user An imaging apparatus according to claim 1. The designation means includes a switch object for designating the image state as a user interface, and a marker object for designating the position appears on the live view image in response to a user operation on the switch object. The imaging apparatus according to claim 1, wherein The imaging apparatus according to claim 18 , wherein the marker object moves on the live view image in accordance with a user operation. Display control processing for sequentially displaying live view images for confirmation of shooting composition, which are sequentially output from the imaging means, on the display means;
A designation process for causing the user to designate an arbitrary position on the live view image and for allowing the user to arbitrarily designate an image state based on a predetermined viewpoint at the designated position;
A shooting control process for changing an imaging condition or an image processing condition when recording an image captured by the imaging unit so that an image state based on the predetermined viewpoint at the specified position becomes the specified image state;
Including
In the shooting control process, when the image state at the designated position is changed, the shooting condition at the time of imaging by the imaging unit is preferentially changed, and the change to the shooting condition causes the designated image state. If this is not possible, change the image processing conditions for image processing before recording the shot image,
In the designation process, a plurality of marker objects having different directions for changing the image state are displayed on the live view image, and a direction corresponding to the operated marker object according to a user operation on the marker object A method for controlling an image pickup apparatus, characterized in that an image state is designated to be changed . The computer of the imaging device,
Display control means for sequentially displaying on the display means live view images for confirmation of shooting composition that are sequentially output from the imaging means;
Designating means for allowing the user to designate an arbitrary position on the live view image and for allowing the user to arbitrarily designate an image state based on a predetermined viewpoint at the designated position;
An imaging control unit that changes an imaging condition or an image processing condition when recording an image captured by the imaging unit so that an image state based on the predetermined viewpoint at the specified position becomes the specified image state;
To function,
When changing the image state at the specified position, the shooting control unit preferentially changes shooting conditions at the time of shooting by the imaging unit, and the change of the shooting conditions causes the designated image state to be obtained. A program characterized by changing image processing conditions of image processing performed before recording of a photographed image when it cannot be performed . The computer of the imaging device,
Display control means for sequentially displaying on the display means live view images for confirmation of shooting composition that are sequentially output from the imaging means;
Designating means for allowing the user to designate an arbitrary position on the live view image and for allowing the user to arbitrarily designate an image state based on a predetermined viewpoint at the designated position;
An imaging control unit that changes an imaging condition or an image processing condition when recording an image captured by the imaging unit so that an image state based on the predetermined viewpoint at the specified position becomes the specified image state;
To function,
The designation means displays a plurality of marker objects having different directions for changing the image state on the live view image, and a direction corresponding to the operated marker object in response to a user operation on the marker object. A program characterized by specifying to change the image state. The computer of the imaging device,
Display control means for sequentially displaying on the display means live view images for confirmation of shooting composition that are sequentially output from the imaging means;
Designating means for allowing the user to designate an arbitrary position on the live view image and for allowing the user to arbitrarily designate an image state based on a predetermined viewpoint at the designated position;
An imaging control unit that changes an imaging condition or an image processing condition when recording an image captured by the imaging unit so that an image state based on the predetermined viewpoint at the specified position becomes the specified image state;
The captured image captured from the imaging unit is divided into a plurality of regions, and each divided region is subjected to two-dimensional Fourier transform or two-dimensional discrete cosine transform to obtain a distribution state of each frequency component, thereby obtaining a high-frequency component An image quality evaluation means for calculating an image quality evaluation value obtained by quantifying the ratio of low frequency components or
Image quality display means for displaying an image quality evaluation value digitized for each area by the image quality evaluation means together with the live view image;
A program characterized by making it function.

Images