JP2010103922A - Imaging apparatus and method for controlling the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an imaging apparatus capable of aligning the horizontal line of a photographed image with that of an imaging device, even for photographing of a building, or the like, and to provide a method that controls the imaging apparatus. <P>SOLUTION: The imaging apparatus includes an imaging element 221, which is turnable with respect to the imaging apparatus and outputs an object image as image data and an image processing circuit 257 for detecting one or more auxiliary lines from the image data by image processing, wherein an imaging element holding section 367 for holding the imaging element 221 is turn-controlled so that one of the auxiliary lines 374 to 382 becomes horizontal or vertical. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an imaging apparatus and an imaging apparatus control method, and more particularly, to an imaging apparatus and an imaging apparatus control method in which a horizontal line of a captured image is aligned with a horizontal line of an imaging element.

In recent years, an imaging apparatus such as a digital camera capable of changing the aspect ratio has been proposed. For example, Patent Document 1 discloses an electronic camera that can change an aspect ratio by rotating an imaging element by a rotation mechanism. When the image sensor is rotated, an unsightly image is obtained if the horizontal line of the image sensor and the horizontal line of the captured image do not coincide with each other. Therefore, the electronic camera disclosed in Patent Document 1 is provided with an inclination detection unit. The screen level is automatically adjusted based on the tilt detection result.
JP 2002-64738 A

  In the electronic camera disclosed in Patent Document 1, the captured image matches the horizontal line according to the tilt detection result. However, in the shooting of a building or the like, the horizontal line of the building or the like can be obtained even if the camera is held horizontally. The horizontal lines of the image sensor may not match. Further, when the release button is pressed, the imaging device may be tilted by the pressed force, and may be tilted at the moment of shooting.

  The present invention has been made in view of such circumstances, and provides an imaging device and a control method for the imaging device that can match the photographic image and the horizontal line of the imaging element even when photographing a building or the like. The purpose is to do.

  In order to achieve the above object, an image pickup apparatus according to a first aspect of the present invention is rotatable with respect to the image pickup apparatus. An image pickup unit that outputs a subject image as image data; An image processing unit that detects a plurality of auxiliary lines; and a first rotation control unit that controls the imaging unit to rotate so that one of the auxiliary lines is horizontal or vertical.

  An imaging device according to a second invention further includes an auxiliary line selection unit that selects one of the plurality of auxiliary lines in the first invention, and the first rotation control unit includes The imaging unit is controlled to rotate based on the auxiliary line selected by the auxiliary line selection unit.

  According to a third aspect of the present invention, in the first or second aspect of the invention, the first rotation control unit is configured so that the substantially horizontal auxiliary line is horizontal when the image data is horizontally long. The imaging unit is controlled to rotate, and when the image data is vertically long, the imaging unit is controlled to rotate so that a substantially vertical auxiliary line is vertical.

In the imaging device according to a fourth aspect of the present invention, in the first to third aspects of the invention, the first rotation control unit controls the rotation of the imaging unit immediately before shooting.
In the image pickup apparatus according to a fifth aspect of the present invention, in the fourth aspect of the invention, when the continuous shooting is performed, the first rotation control unit controls the rotation of the image pickup unit every time shooting is performed.

  An imaging apparatus according to a sixth aspect of the present invention is rotatable with respect to the imaging apparatus, and includes an imaging unit that outputs a subject image as image data, a display unit that optically displays the subject image, and a display unit A storage unit that stores a difference between the angle and the angle of the imaging unit; and a second rotation control unit that controls the rotation of the imaging unit based on the difference of the angle.

In the imaging device according to a seventh invention, in the sixth invention, the second rotation control unit controls the rotation so that the difference in angle is substantially zero.
An imaging apparatus according to an eighth invention further includes a rewriting unit that rewrites the difference in angle stored in the storage unit in the sixth or seventh invention, and the second rotation control unit includes: The imaging unit is controlled to rotate based on the rewritten angle difference.
In an imaging device according to a ninth invention, in the sixth to eighth inventions, the second rotation control unit controls the rotation of the imaging unit when the imaging device is turned on or immediately before shooting.

  According to a tenth aspect of the present invention, there is provided a control method for an image pickup apparatus, wherein a subject image is output as image data from an image pickup unit that is rotatable with respect to the image pickup apparatus, and one or more auxiliary lines are obtained from the image data by image processing. And the image pickup unit is controlled to rotate so that one of the auxiliary lines is horizontal or vertical.

  According to an eleventh aspect of the present invention, there is provided a control method for an image pickup apparatus, wherein a subject image is output as image data from an image pickup unit that is rotatable with respect to the image pickup device, the subject image is optically displayed on a display unit, and the display The difference between the angle of the image pickup unit and the angle of the image pickup unit is stored, and the image pickup unit is controlled to rotate based on the angle difference.

  ADVANTAGE OF THE INVENTION According to this invention, even if it is imaging | photography of a building etc., the imaging device which can match | combine a picked-up image and the horizontal line of an image pick-up element, and the control method of an imaging device can be provided.

  Hereinafter, a preferred embodiment using a digital camera to which the present invention is applied will be described with reference to the drawings. FIG. 1 is an external view of a digital single lens reflex camera according to an embodiment of the present invention viewed from the front, and FIG. 2 is an external perspective view of the digital single lens reflex camera viewed from the back side.

  A body mount 24 for mounting the interchangeable lens 100 is provided in the approximate center of the front surface of the camera body 200 shown in FIG. A communication contact 341 for connecting to the interchangeable lens 100 and performing communication is disposed at a position slightly behind the body mount 24. Further, the inside of the camera body 200 from the body mount 24 is a mirror box, and a movable mirror 201 and the like are arranged in the mirror box.

  In addition, a release button 21 is disposed on the upper part of the left-side grip portion of the camera body 200. The release button 21 has a first release switch that is turned on when the photographer is half-pressed and a second release switch that is turned on when the photographer is fully pressed. When the first release switch (hereinafter referred to as 1R) is turned on, the camera performs photographing operations such as focus detection, focusing of the photographing lens, and photometry of the subject brightness, and the second release switch (hereinafter referred to as 2R) is turned on. Based on the output of the image sensor 221 (see FIG. 3), an exposure operation for capturing image data of the subject image is executed.

  A front dial 22 is disposed on the front left grip portion of the camera body 200. The front dial 22 is rotatable in a clockwise direction and a counterclockwise direction, and its rotation direction and rotation amount are detected and output.

  A built-in flash 50 for irradiating the subject with auxiliary light is housed in the upper part of the camera body 200. When the built-in flash 50 is in a pop-up state, the built-in flash 50 is in a use state, and the light emitting unit is positioned toward the subject.

  A control panel 40 is disposed on the upper surface of the camera body 200. The control panel 40 is a display device such as a liquid crystal display, and displays shooting information such as an aperture value and a shutter speed value for shooting.

  As shown in FIG. 2, a rear dial 23 is arranged on the upper right side of the back surface of the camera body 200. Similarly to the front dial 22, the rear dial 23 is also rotatable in the clockwise direction and the counterclockwise direction, and the rotation direction and the rotation amount are detected and output.

  A live view display button (hereinafter referred to as LV display button) 31 is disposed below the rear dial 23. Live view display refers to displaying a subject image on a display device such as a liquid crystal monitor for subject image observation based on image data acquired by an image sensor. By operating this LV display button 31, the live view display mode is set, and when it is operated again, the live view display mode is canceled.

  A cross button 32 is disposed below the LV display button 31. This cross button 32 is composed of four buttons, an upper cross button, a lower cross button, a right cross button, and a left cross button. . An OK button 33 is disposed substantially at the center of the four cross buttons 32. The OK button 33 is an operation member for determining the item selected by the cross button 32.

  A power switch 34 is disposed below the cross button 32. The power switch 34 is an operation member for controlling execution of the camera operation of the camera. That is, the camera according to the present embodiment performs various operations when the power switch 34 is on, and does not perform camera operations when the power switch 34 is off.

  An eyepiece unit 38 is provided at the upper portion of the center of the back surface of the camera body 200, and an eyepiece lens 209 is disposed therein. The camera body 200 is a single-lens reflex camera. A finder optical system (see FIG. 3) such as a movable mirror 201 and a pentaprism 207 is arranged inside, and a subject light flux that has passed through the finder optical system is used as an eyepiece. 209. The photographer can optically observe the subject image through the eyepiece lens 209.

  A rear liquid crystal monitor (hereinafter referred to as rear LCD) 39 is disposed below the eyepiece 38. The rear LCD 39 is a display device for performing live view display, reproducing and displaying recorded subject images, and displaying shooting information and menus. Any liquid crystal display can be used as long as it can perform these displays. Further, in the present embodiment, the camera body 200 is disposed on the back surface, but is not limited to the back surface as long as the photographer can observe it.

  A menu button 35 is disposed below the rear LCD 39 and on the left side of the power switch 34. The menu button 35 is an operation member for setting or canceling the menu (setting) mode. The menu mode is a mode for performing various modes and other settings of the camera. When the menu mode is set, a menu is displayed on the rear LCD 39. The photographer selects a desired mode or the like from the menu display with the cross button 32 and confirms with the OK button 33.

  A playback button 36 is arranged on the left side of the menu button 35. The playback button 36 is an operation member that reads out image data recorded on a recording medium or the like and instructs a playback mode in which a subject image is played back and displayed on the rear LCD 39 based on the image data.

  On the left side of the playback button 36, a vertical / horizontal button 37 is arranged. The vertical / horizontal button 37 is an operation member for selecting either a vertical image or a horizontal image. As will be described later, the image pickup device 221 of the camera according to the present embodiment has a substantially square shape, and image data of a vertically long image or a horizontally long image is selected and displayed from image data output by the image pickup device. And recording on a recording medium.

  Next, an electric circuit of the digital single-lens reflex camera according to the present embodiment will be described with reference to a block diagram shown in FIG. This digital single-lens reflex camera includes an interchangeable lens 100 and a camera body 200. In the present embodiment, the interchangeable lens 100 and the camera body 200 are configured separately and are electrically connected by the communication contact 341. However, the interchangeable lens 100 and the camera body 200 can be configured integrally. .

  Inside the interchangeable lens 100, a photographing optical system 101 for focus adjustment and focal length adjustment, and a diaphragm 103 for adjusting the aperture amount are arranged. The photographing optical system 101 is driven by an optical system driving mechanism 107, and the diaphragm 103 is driven by an aperture driving mechanism 109. The focal position (focus position) of the photographic optical system 101 driven by the optical system drive mechanism 107 is detected by the focus position detection mechanism 105, and the focal length of the photographic optical system 101 is detected by the zoom position detection mechanism 106. .

  The optical system drive mechanism 107, the aperture drive mechanism 109, the focus position detection mechanism 105, and the zoom position detection mechanism 106 are each connected to a lens CPU 111, and the lens CPU 111 is connected to the camera body 200 via a communication contact 341. ing.

  A lens ROM 113 and a lens RAM 115 are connected to the lens CPU 111. The lens ROM 113 is an electrically rewritable nonvolatile memory, and stores a program for causing the lens CPU 111 to execute, unique information of the interchangeable lens 100, and the like. The lens RAM 115 is an electrically rewritable volatile memory, and is a temporary storage area used for executing the above-described program.

  The lens CPU 111 controls the interchangeable lens 100. The lens CPU 111 controls the optical system driving mechanism 107 to perform focusing and zoom driving, and controls the diaphragm driving mechanism 109 to perform aperture value control. Further, the lens CPU 111 transmits the focal length and focal position information detected by the focus position detection mechanism 105 and the zoom position detection mechanism 106 to the camera body 200.

  In the camera body 200, a position tilted by 45 degrees with respect to the optical axis of the lens (the lowered position, the subject image observation position) in order to reflect the subject image to the observation optical system, and a subject image to be guided to the image sensor 221. A movable mirror 201 that can be rotated between the jumped up position (the raised position and the retracted position) is provided.

  Above the movable mirror 201, a focusing screen 204 for forming a subject image is disposed. Above the focusing screen 204, an entire liquid crystal plate (hereinafter referred to as an entire LCD) 205 is disposed. . The entire LCD 205 can partially control transmission and light shielding, and can guide the subject image to the finder optical system for any part of the subject image formed on the focusing screen 204.

  Above the entire LCD 205, a pentaprism 207 for horizontally inverting the subject image is arranged. An in-finder display device 206 is arranged along the front reflective surface of the pentaprism 207. The in-viewfinder display device 206 is composed of a liquid crystal display device or the like, and displays a field-of-view display, photographing information and the like superimposed on the optical viewfinder image, as will be described later. The in-finder display device 206 is connected to the in-finder display driving circuit 295, and is driven and controlled thereby.

  An eyepiece lens 209 for observing a subject image is disposed on the emission side (right side in FIG. 3) of the pentaprism 207, and a photometric sensor 211 is disposed on the side of the pentaprism 207 so as not to interfere with the observation of the subject image. The photometric sensor 211 is connected to a photometric processing circuit 212, and the output of the photometric sensor 211 is subjected to processing such as amplification and analog-digital conversion by the photometric processing circuit 212.

  Near the center of the movable mirror 201 described above is a half mirror, and on the back surface of the movable mirror 201, a sub mirror 203 for reflecting subject light transmitted through the half mirror portion to the lower part of the camera body 200 is provided. ing. The sub mirror 203 is rotatable with respect to the movable mirror 201. When the movable mirror 201 is flipped up (the position indicated by a broken line in FIG. 3), the sub mirror 203 is rotated to a position that covers the half mirror portion. When in the observation position (lowering position), it is in an open position with respect to the movable mirror 201 as shown.

  This movable mirror 201 is driven by a mirror drive mechanism 239. A phase difference AF sensor 241 is disposed below the sub mirror 203, and an output of the phase difference AF sensor 241 is connected to the phase difference AF processing circuit 243. The phase difference AF sensor 241 is a known phase difference that separates the peripheral luminous flux of the photographing optical system 101 into two luminous fluxes in order to measure the defocus amount of the subject image formed by the photographing optical system 101. It consists of an AF optical system and a pair of sensors. Further, the phase difference AF sensor 241 can detect the focus at each of a plurality of points in the photographing screen.

  A focal plane type shutter 213 for controlling the exposure time is disposed behind the movable mirror 201, and this shutter 213 is driven and controlled by a shutter drive mechanism 237. An imaging element 221 is disposed behind the shutter 213 and photoelectrically converts a subject image formed by the photographing optical system 101 into an electrical signal. Needless to say, a two-dimensional solid-state image sensor such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor) can be used as the image sensor 221.

  The image sensor 221 is connected to the image sensor drive circuit 223, and the image sensor drive circuit 223 reads an image signal from the image sensor 221. The image sensor driving circuit 223 is connected to a preprocessing circuit 225. The preprocessing circuit 225 performs preprocessing for image processing such as pixel thinning processing for live view display and clipping processing for enlarged display. Do.

  A dust filter 215 and an infrared cut filter / low pass filter 217 are disposed between the shutter 213 and the image sensor 221. A piezoelectric element is fixed around the dustproof filter 215, and this piezoelectric element is vibrated with ultrasonic waves by a dustproof filter driving circuit 235. The dust adhering to the dust filter 215 is removed by the vibration wave generated in the piezoelectric element.

  The infrared cut filter / low pass filter 217 is an optical filter for removing the infrared light component and the high frequency component from the subject light flux. The dust-proof filter 215, the infrared cut filter / low-pass filter 217, and the image sensor 221 are integrally formed in an airtight manner so that dust and the like do not enter. The integrated image sensor 221 and the like can be moved by the shift mechanism 233 along the X-axis direction and the Y-axis direction on the image pickup surface of the image sensor 221, respectively.

  The rotation mechanism 361 rotates the image sensor 221 and the like in a plane perpendicular to the optical axis of the photographing optical system 101. The rotation mechanism drive circuit 362 includes a step motor 365 (see FIG. 5) and a photo interrupter (PI) 364, and drives the rotation mechanism 361 and detects its drive amount. Specific configurations of the rotation mechanism 361 and the rotation mechanism drive circuit 362 will be described later with reference to FIG.

  The camera shake sensor 229 is an angular acceleration sensor or the like that detects vibration caused by camera shake or the like applied to the camera body 200, and this output is connected to the camera shake correction circuit 230. The camera shake correction circuit 230 generates a camera shake correction signal for removing vibrations such as camera shake, and the output of the camera shake correction circuit 230 is connected to the shift mechanism drive circuit 231.

  The shift mechanism drive circuit 231 inputs a camera shake correction signal, and drives the shift mechanism 233 based on this signal. By this shift mechanism 233, the image sensor 221 and the like are moved so as to cancel vibrations such as camera shake applied to the camera body 200, thereby performing vibration isolation.

  The tilt sensor 227 detects angular acceleration about three axes and outputs a value corresponding to the tilt of the camera body 200. The inclination detection circuit 228 is connected to the inclination sensor 227, and obtains the inclination state from the steady state value of the inclination sensor 227 and the acceleration from the change amount of the inclination sensor 227, and outputs these values.

  The light source sensor 244 is a sensor for detecting a light source of ambient light of a subject such as a fluorescent lamp or sunlight. The light source processing circuit 245 is connected to the light source sensor 244 and outputs light source data corresponding to the light source. The illuminance sensor 246 is a sensor for measuring the illuminance on the camera 200. The illuminance processing circuit 247 is connected to the illuminance sensor 246 and outputs illuminance data corresponding to the illuminance.

  The remote control reception sensor 248 is an infrared sensor for receiving a remote control command by infrared rays or the like from a remote control device (not shown). The remote control reception processing circuit 249 is connected to the remote control reception sensor 248, inputs a signal from this sensor, and outputs a remote control signal.

The pre-processing circuit 225 described above is an ASIC (Application Specific
Integrated Circuit is connected to a data bus 252 in an application-specific integrated circuit) 250, and is connected to each circuit in the ASIC 250 via the data bus 252. The preprocessing circuit 225 is also connected to the contrast AF circuit 253 and the AE circuit 255.

  The contrast AF circuit 253 extracts a high frequency component based on the image signal output from the preprocessing circuit 225, and outputs contrast information based on the high frequency component to the body CPU 251. The AE circuit 255 outputs photometric information corresponding to the subject brightness to the body CPU 251 based on the image signal output from the preprocessing circuit 225.

  The body CPU 251 connected to the data bus 252, the contrast AF circuit 253, and the AE circuit 255 controls the operation of the digital single-lens reflex camera according to the program stored in the flash memory 277.

  In addition to the body CPU 251, the data bus 252 includes an image processing circuit 257, a compression / decompression circuit 259, a video signal output circuit 261, a switch detection circuit 268, an input / output circuit 271, a communication circuit 273, a flash memory control circuit 275, and an SDRAM control circuit. 279, a recording medium control circuit 283, and a dial detection circuit 289 are connected.

  The image processing circuit 257 performs various types of image processing such as digital amplification (digital gain adjustment processing) of digital image data, color correction, gamma (γ) correction, contrast correction, live view display image generation, and edge enhancement. The compression / decompression circuit 259 is a circuit for compressing the image data temporarily stored in the SDRAM 281 by a compression method such as JPEG or TIFF and decompressing the data for display. Note that image compression is not limited to JPEG or TIFF, and other compression methods can be applied.

  The video signal output circuit 261 is connected to the rear LCD 39 via the LCD driving circuit 263, and can be connected to the external display device 330 via the contact 330a. The video signal output circuit 261 is a circuit for converting image data stored in the SDRAM 281, the recording medium A 285, and the recording medium B 287 into a video signal for display on the rear LCD 39 or the like. As shown in FIG. 2, the rear LCD 39 is disposed on the rear surface of the camera body 200. However, the rear LCD 39 is not limited to the rear surface and may be another display device as long as the photographer can observe.

  Various switches including a 1R switch for detecting the first stroke (half press) of the shutter release button 21, a 2R switch for detecting the second stroke (full press), and a live view display switch that is turned on by operating the live view display button 31. 269 is connected to the data bus 252 via the switch detection circuit 268. Other various switches 269 include a menu switch linked to the menu button 35, a playback switch linked to the playback button 36, a vertical / horizontal switch linked to the vertical / horizontal button 37, and a power switch 34. Various interlocking switches are included.

  The dust filter driving circuit 235, the shutter driving mechanism 237, the phase difference AF processing circuit 243, the mirror driving mechanism 239, the light source processing circuit 245, the illuminance processing circuit 247, the remote control reception processing circuit 249, the tilt detection circuit 228, and the shift mechanism driving circuit described above. An input / output circuit 271 connected to the photometric processing circuit 212 and the rotation mechanism driving circuit 362 controls input / output of data to / from each circuit such as the body CPU 251 via the data bus 252. The input / output circuit 271 is also connected to an LCD orientation detection circuit 265, a charging circuit 301, and a flash light emission circuit 303, which will be described later.

  A communication circuit 273 connected to the lens CPU 111 via a communication contact 341 is connected to the data bus 252 and exchanges data and communicates control commands with the body CPU 251 and the like.

  The flash memory control circuit 275 is connected to a flash memory 277. The flash memory 277 stores a program for controlling the operation of the digital single-lens reflex camera. As described above, the body CPU 251 The digital single-lens reflex camera is controlled according to the program stored in the flash memory 277. Note that the flash memory 277 is an electrically rewritable nonvolatile memory.

  The SDRAM 281 is connected to the data bus 252 via the SDRAM control circuit 279, and the SDRAM 281 temporarily stores the image data processed by the image processing circuit 257 or the image data compressed by the compression / decompression circuit 259. This is a buffer memory.

  A recording medium control circuit 283 connected to the data bus 252 is connected to the recording medium A 285 and the recording medium B 287, and controls recording of image data and the like on these recording media A 285 and B 287 and reading of the image data and the like.

  Recording medium A285 and recording medium B287 are loaded with any of rewritable recording media such as xD Picture Card (registered trademark), CompactFlash (registered trademark), SD Memory Card (registered trademark) or Memory Stick (registered trademark). It is configured so that it can be attached to and detached from the camera body 200. In addition, the hard disk may be configured to be connectable via a communication contact. Note that the recording media A285 and B287 are the same type of recording media, and combinations such as combinations with different storage capacities and combinations of different types of recording media are free.

  The dial detection circuit 289 is connected to the front dial 22 and the rear dial 23, respectively, and detects the rotation direction and the rotation amount of each dial.

  In the camera main body 200, a power supply circuit 291 for supplying power to each circuit and each mechanism in the main body is provided. A built-in battery 292 and an external power supply 293 can be connected to the power supply circuit 291.

  The LCD orientation detection circuit 265 detects the orientation of the rear LCD 39. That is, the rear LCD 39 can change its orientation to a vertical position or a horizontal position, detects this orientation, and transmits it to the body CPU 251 via the input / output circuit 271.

  A control panel drive circuit 297 is connected to the control panel 40 described above, and the control panel drive circuit 297 is connected to the body CPU 251. The body CPU 251 displays shooting information and the like on the control panel 40 via the control panel drive circuit 297.

  The built-in flash 50 disposed in the camera body 200 includes a charging circuit 301, a flash light emitting circuit 303, a light emitting tube 305, and the like. The charging circuit 301 receives power supply from the battery 292, the external power supply 293 or the like, boosts the voltage, and charges it. The flash light emission circuit 303 performs light emission control such as applying a voltage boosted by the charging circuit 301 to the light emission tube 305 at a predetermined timing.

  The external flash 310 is an external flash device, and is connected to the camera body 200 via the contacts 310a and 310b. In the external flash 310, a flash CPU 311, a charging circuit 313, a flash light emission circuit 315, an arc tube 317, a reflector 318, and a zoom drive circuit 319 are disposed.

  The flash CPU 311 controls the external flash 310, and communicates with the body CPU 251 via the contact 310b and the communication circuit 273. The charging circuit 313 boosts the voltage of the power supply battery loaded in the external flash 310 and charges it. The flash light emission circuit 315 emits light according to the light emission command received via the body CPU 251 and the contact 210a. The zoom drive circuit 319 drives and controls the distance between the arc tube 317 and the reflection shade 318 according to the focal length of the photographing optical system 101, and controls the irradiation angle according to the focal length of the photographing optical system 101 and the like. .

  The external device 320 is a device such as a personal computer (PC), and communicates with the body CPU 251 via the contact 320a and the communication circuit 273. The external display device 330 is a display device such as a television and is connected to the video signal output circuit 261 through the contact 330a. A display device drive circuit 331 and a display device 333 are disposed inside the external display device 330. Based on the video signal from the video signal output circuit 261, the display device driving circuit 331 displays a recorded image or the like on the display device 333.

  Next, vertical and horizontal (sometimes referred to as an aspect) and aspect ratio according to the present embodiment will be described with reference to FIG. The imaging surface of the image sensor 221 has a substantially square shape, and an image is obtained in the image sensor 221 and in the image circle 120. The aspect ratio at this time is called the aspect ratio. In the present embodiment, four aspect ratios of 4: 3 landscape, 4: 3 portrait, 16: 9 landscape, and 16: 9 portrait are employed. Of course, a different aspect ratio may be adopted. The illustrated longitudinal direction 360 corresponds to the longitudinal direction of the landscape image when the camera body 200 is held in the landscape position.

  The aspect ratio described here can be changed by a subroutine for setting change 1 in FIG. Based on the set aspect ratio, valid image data (image data output area) is selected by the preprocessing circuit 225 and the image processing circuit 257 from the image data output from the image sensor driving circuit 223. The

  Next, the configuration of the rotation mechanism 361 and the rotation mechanism drive circuit 362 will be described with reference to FIG. FIG. 5 is a cross-sectional view of the image sensor holding frame 367 that holds the image sensor 221 across a plane perpendicular to the optical axis of the photographing optical system 101. A screw gear (worm) constituting the worm gear 366 is provided on the outer periphery of the image sensor holding frame 367. This screw gear meshes with a helical gear (worm wheel) constituting the worm gear 366, and this helical gear is fixed to the drive shaft of the step motor 365.

  Further, a comb-like PI blade 364 b is provided on the outer periphery of the image sensor holding frame 367. In the PI blade 364b, as shown in FIG. 5B, light shielding portions and transmission portions are alternately formed in a comb shape. A photo interrupter (PI) 364 is fixed to the camera body 200 so as to sandwich the PI blade 364b. The image sensor holding frame 367 is provided with two protrusions 367a and 367b, and a body-side protrusion 368 fixed integrally with the camera body 200 is disposed between the two protrusions 367a and 367b.

  Since the rotation mechanism 361 and the like are configured in this way, the image sensor 221 can be freely rotated within a plane perpendicular to the optical axis of the photographing optical system 101. That is, when the step motor 365 is rotated, the image sensor holding frame 367 is rotated via the worm gear 366. The rotation range at this time is within an angle determined by the protrusions 367 a and 367 b and the main body side protrusion 368.

  When the image sensor holding frame 367 rotates, the image sensor 221 integrated therewith also rotates. The rotation amount at this time is detected by a photo interrupter (PI) 364, and a pulse signal is output according to the rotation amount. The detection output of the photo interrupter (PI) 364 is transmitted to the body CPU 251 through the input / output circuit 271.

  Next, the operation in the present embodiment will be described with reference to the flowcharts shown in FIGS.

  FIG. 6 shows a power-on reset operation by the body CPU 251 on the camera body 200 side. When the battery 292 is loaded in the camera body 200 or the external power source 293 is connected, this flow starts. First, it is determined whether the power switch 34 of the camera body 200 is on (# 1). If the result of determination is that the power switch 34 is off, the sleep state, which is a low power consumption state, is entered (# 3).

  In this sleep state, interrupt processing is performed only when the power switch 34 is turned on, and processing for power-on is performed in step # 5 and subsequent steps. Until the power switch 34 is turned on, operations other than the power switch interrupt processing are stopped to prevent the power battery from being consumed.

  In step # 1, when the power switch 34 is turned on, or when the sleep state is canceled in step # 3, power supply is started (# 5). Next, a dust removing operation is performed in the dust filter 215 (# 7). In this step, a driving voltage is applied from the dust filter driving circuit 235 to the piezoelectric element fixed to the dust filter 215, and dust and the like are removed by ultrasonic vibration waves.

  Next, if there is information such as the shooting mode set by the front dial 22 or the rear dial 23, ISO sensitivity, manually set shutter speed or aperture value, the shooting mode and shooting conditions are read (#). 9). At this time, the lens CPU 111 also reads lens information such as the aperture stop and focal length information of the interchangeable lens 100 via the communication circuit 273.

  Once the shooting mode or the like has been read, it is next determined whether or not live view is being performed (# 11). The live view display of the digital single lens reflex camera according to this embodiment is set to the live view display mode when the LV display button 31 is operated once, and the live view display mode is canceled when the LV display button 31 is operated again.

  If the result of determination in step # 11 is not live view display mode, that is, in the case of optical viewfinder display mode, finder photometry (F metering) and exposure amount calculation are performed (# 13). When not in the live view display mode, the movable mirror 201 is in the lowered state, and reflects the subject light flux that has passed through the photographing optical system 101 to the finder optical system such as the pentaprism 207. Therefore, the subject luminous flux enters the photometric element 211, and photometry can be performed.

  When metering is performed by finder metering, an exposure value such as an aperture value and a shutter speed for obtaining proper exposure is calculated based on the subject luminance obtained at this time. The exposure amount is calculated according to the shooting mode and shooting conditions set in step # 9.

  Once the exposure amount is calculated, the finder display is then performed (# 15). The viewfinder display is performed by the in-finder display device 206, and the shooting range according to the set aspect ratio and aspect ratio, and the shooting conditions such as the aperture value and the shutter speed, which are calculated or set manually, are displayed. The aperture value and shutter speed value based on the calculated exposure amount, or these manually set values are also displayed on the control panel 40. The details of this finder display subroutine will be described later with reference to FIG.

  Subsequently, the live view display is turned off (# 17). When the live view display mode is switched to the optical viewfinder display mode, the live view display is turned off here. If the live view display mode is canceled and the optical viewfinder display is repeated, the live view display is turned off, and this step is skipped.

  If the result of determination in step 11 is that live view display mode has been set, the movable mirror 201 is retracted (# 31), and the shutter 213 is opened (# 33). In the live view display mode, the subject image is displayed on the rear LCD 39 based on the image data from the image sensor 221, so the movable mirror 201 is retracted and the shutter 213 so that the subject image is formed on the image sensor 221. Is released. Note that steps # 31 and # 33 are skipped after the live view display is started.

  Subsequently, imager photometry (I photometry) and exposure amount calculation are performed (# 35). When the live view display mode is entered, the movable mirror 201 is retracted from the optical path of the photographing optical system 101, and the subject luminous flux does not enter the photometric element 211. Therefore, the subject brightness is measured by the AE circuit 255 based on the image data from the image sensor 221.

  Based on the measured subject brightness, an exposure amount such as an aperture value and a shutter speed for obtaining proper exposure is calculated. Note that the exposure amount is calculated according to the shooting mode and shooting conditions set in step # 9, as in step # 13. Further, the aperture value and shutter speed value based on the exposure amount calculated here, or these manually set values are displayed on the rear LCD 39 and the control panel 40.

  Subsequently, live view display is performed (# 37). In the live view display, image processing such as thinning out the number of pixels is performed by the pre-processing circuit 225 and the image processing circuit 257 based on the image data from the image sensor 221, and the subject image is displayed on the rear LCD 39 as a moving image. Every time image data is read from the image sensor 221, the subject image is updated.

  Once live view display is performed, the viewfinder display is turned off (# 39). When the optical viewfinder display mode is switched to the live view display mode, the viewfinder display is turned off here. Note that when the mode is switched to the live view display mode and the live view display is repeatedly performed, the finder display is turned off, and this step is skipped.

  When the live view display in step # 17 is turned off or the viewfinder display in step # 39 is turned off, it is determined whether or not an operation with the operation member has been performed (# 19). In this step, it is determined by the switch detection circuit 268 whether any one of the 1R switch, the setting switch (menu switch), the reproduction switch, and the power switch has been operated.

  If the result of determination in step # 19 is that there has been no operation, processing returns to step # 11 and the aforementioned operation is executed. On the other hand, if the result of determination is that operation has been performed, it is next determined whether or not the release button 21 has been half-pressed, that is, whether or not the 1R switch is on (# 21).

  If the result of determination in step # 21 is that the 1R switch is on, a subroutine for shooting operation 1 for performing shooting preparation and shooting is executed (# 41). Details of this subroutine will be described later with reference to FIG.

  If the result of determination in step # 21 is that the 1R switch is not on, or if shooting operation 1 has been executed in step # 41, it is next determined whether or not the setting switch is on. In this step, it is determined whether or not the menu button (setting button) 35 or the like is operated and the menu mode (setting mode) is set.

  If the result of determination in step # 23 is menu mode (setting mode), setting change 1 is performed (# 43). In the setting change 1 subroutine, various processes are performed in accordance with the set menu. As the menu mode, for example, there is an aspect change mode for changing the aspect ratio. The menu mode also switches between a single shooting mode in which one frame shooting is performed when the release button 21 is pressed and a continuous shooting mode in which continuous shooting is performed while the release button 21 is pressed. Details of this subroutine will be described later with reference to FIG.

  If the result of determination in step # 23 is that the setting switch is not on, or if the setting change 1 subroutine in step # 43 is executed, it is next determined whether or not the regeneration switch is on (# 25). . If the result of this determination is that the regeneration switch is on, regeneration operation is executed (# 45). In the reproduction operation, the image data recorded on the recording medium A285 or the recording medium B287 is read and reproduced and displayed on the rear LCD 39 or the external display device 330.

  If the result of determination in step # 25 is that the regeneration switch is not on, or if the regeneration operation subroutine in step # 45 is executed, it is next determined whether or not the power switch 34 is on (# 27). . If the result of this determination is that the power switch 34 is on, processing returns to step # 11 and the aforementioned operation is executed.

  On the other hand, if the result of determination in step # 27 is that the power switch is not on, power supply is stopped (# 29), processing returns to step # 3, and the aforementioned sleep state is entered.

  Next, the subroutine of the shooting operation 1 in step # 41 will be described with reference to the flowchart shown in FIG.

  When the shooting operation 1 subroutine is entered, it is first determined whether or not the live view display mode is set as in step # 11 (# 51). If the result of this determination is not live view display mode, a phase difference AF subroutine is executed (# 53). In this phase difference AF subroutine, the focal shift direction and the focal shift amount of the photographic optical system 101 are detected based on a known phase difference method using two light beams that have passed through the periphery of the photographic optical system 101. Then, the photographing optical system 101 is driven to the in-focus position using the detected defocus direction and defocus amount.

  When phase difference AF is completed, finder photometry and exposure amount calculation are then performed in the same manner as in step # 13 (# 55). The aperture value and shutter speed value based on the exposure amount calculated here, or these manually set values are displayed on the in-finder display device 206 and the control panel 40.

  If the result of determination in step # 51 is live view display mode, the imager AF subroutine is executed (# 57). In the live view display mode, the movable mirror 201 is in the retracted position from the optical path of the photographing optical system 101, and distance measurement by phase difference AF cannot be performed. Therefore, imager AF is performed based on the image data from the image sensor 221. In this imager AF subroutine, drive control of the imaging optical system 101 is performed so that the high-frequency component of the image data output from the contrast AF circuit 253 has a peak value.

  Once imager AF has been carried out, imager photometry and exposure amount calculation are carried out in the same manner as in step # 35 (# 59). The aperture value and shutter speed value based on the calculated exposure amount, or these manually set values are displayed on the rear LCD 39 and the control panel 40.

  Once imager photometry / exposure amount calculation has been performed, automatic tilt correction processing is then performed (# 60). In this step, edge enhancement processing is performed on the image data output from the image sensor 211. At this time, an angle formed by the extracted auxiliary line and the longitudinal direction 360 of the image sensor 211 is detected, and imaging is performed based on this angle. The element holding frame 367 is rotated. When the image data is horizontally long, the substantially horizontal auxiliary line is horizontal, and when the image data is vertically long, the substantially vertical auxiliary line can be vertical. Details of this automatic tilt correction processing subroutine will be described later with reference to FIG.

  After performing finder photometry and exposure amount calculation in step # 55 or automatic tilt correction processing in step # 60, it is next determined whether or not the release button 21 has been half-pressed, that is, whether or not the 1R switch is on ( # 61). If the result of this determination is that the 1R switch is on, it is determined whether or not the 2R switch is on (# 63).

  If the result of determination in step # 63 is that the 2R switch is not on, the release button 21 has been pressed halfway down, and a standby state in which steps # 61 and # 63 are alternately determined is entered. If the result of determination in step # 61 is that the 1R switch is not on, the photographer's finger has been released from the release button 21, so the shooting operation subroutine is terminated, and the flow returns to the original flow.

  If the result of determination in step # 63 is that the 2R switch is on, the release button 21 is fully pressed and the operation proceeds to exposure. First, as in steps # 11 and # 51, it is determined whether or not the live view display mode is set (# 65). If the result of this determination is not live view display mode, the movable mirror 201 is retracted (# 67). In the live view display mode, that is, in the optical viewfinder display mode, the movable mirror 201 is in the lowered position, and therefore the movable mirror 201 is retracted to guide the subject light flux to the image sensor 221.

  On the other hand, if the result of determination in step # 65 is live view display mode, the shutter 213 is closed (# 91). In the live view display mode, the movable mirror 201 is in the retracted position, and the shutter 213 remains open. Since the shutter 213 needs to be charged when performing the exposure operation, the shutter 213 is temporarily closed.

  If the movable mirror is retracted in step # 67 or the shutter is closed in step # 91, the diaphragm 103 is then moved down (# 69). In this step, a stop instruction is given to the lens CPU 111 so that the aperture value obtained based on the exposure amount calculation or the manually set aperture value is obtained.

  Subsequently, an exposure operation is performed (# 71). In this step, the front curtain of the shutter 213 is driven and charge accumulation is started in the image sensor 221. When a predetermined time elapses, the rear curtain of the shutter 213 is caused to travel and the charge accumulation in the image sensor 221 is terminated.

  When the exposure operation is completed, the aperture 103 is then opened (# 73). That is, the body CPU 251 transmits an instruction to the lens CPU 111 so that the aperture 103 becomes the full aperture value.

  When the aperture is opened, it is next determined whether or not the live view display mode is set (# 75), as in steps # 11, # 51, and # 65. If the result of this determination is not live view display mode, the movable mirror 201 is returned (# 77). That is, since the movable mirror 201 has been retracted from the optical path of the photographing optical system 101 in step # 67, it is lowered so as to be inserted into the optical path.

  On the other hand, if the result of determination in step # 75 is live view display mode, the shutter 213 is opened (# 93). That is, in order to restart the live view display, the front curtain of the shutter 213 is run and the shutter is opened in order to guide the subject light flux from the photographing optical system 101 to the image sensor 221.

  When the movable mirror is returned at step # 77 or the shutter is opened at step # 93, the image is read out (# 79). In this step, an image signal is read from the image sensor 221 by the image sensor drive circuit 223.

  Subsequently, image processing is performed (# 81). That is, the image signal read from the image sensor 221 is subjected to various image processing by the preprocessing circuit 225, the image processing circuit 257, the compression / decompression circuit 259, and the like. Note that the image data in the image data output area based on the set aspect ratio is selected by the pre-processing circuit 225, the image processing circuit 257, and the like by the setting change 1 subroutine (see FIG. 11), and image processing is performed.

  Once image processing has been performed, image recording is next performed (# 83). In the image recording, the image data in the image data output area subjected to the image processing is recorded on the recording medium A 285 or the recording medium B 287 by the recording medium control circuit 283.

  Once image recording has been carried out, it is next determined whether it is single shooting or continuous shooting (# 85). As described above, since single / continuous shooting is set in the menu mode (# 43), in this step, the setting state in the menu mode is determined. If the result of this determination is that continuous shooting has been set, automatic tilt correction processing is executed as in step # 60 (# 87). In the case of continuous shooting, in this embodiment, by performing automatic tilt correction, in the case of a horizontally long image, the horizontal line of the shooting frame can be made substantially coincident with the longitudinal direction 360 of the image sensor 221. When the automatic tilt correction is performed, the process returns to step # 61 to execute the above-described operation.

  If the result of determination in step # 85 is a single shot, the shooting operation subroutine is terminated and the original flow is returned to.

  Next, a subroutine for automatic tilt correction processing in steps # 60 and # 87 will be described with reference to FIG. When the automatic inclination correction subroutine is entered, first, image processing for edge enhancement of the captured image is performed (# 201). In this step, the image processing circuit 257 performs edge enhancement processing on the image data read from the image sensor 211.

  Subsequently, it is determined whether the aspect is a vertical position or a horizontal position (# 203). Since the vertical position or the horizontal position is set by the vertical / horizontal button 37, in this step, it is determined which aspect is set by the vertical / horizontal button 37. As a result of this determination, if the aspect is in the horizontal position, a horizontal auxiliary line 371 is displayed as shown in FIG. 12A (# 205). That is, the auxiliary line 371 that coincides with the longitudinal direction 360 of the image sensor 211 is displayed on the display screen in the rear LCD 39, and the photographer is notified that the inclination correction is performed in this direction.

  If the result of determination in step # 203 is that the aspect is vertical, a vertical auxiliary line 371 is displayed as shown in FIG. 12B (# 207). That is, an auxiliary line 372 that coincides with the longitudinal direction 360 of the image sensor 211 (the longitudinal direction as the rear LCD 39) is displayed on the display screen in the rear LCD 39, and the photographer is notified that the inclination correction is performed in this direction. .

  When the horizontal or vertical auxiliary lines 371 and 372 are displayed, an inclination correction pulse is calculated (# 209). In this step, an angle formed by the auxiliary line based on the edge obtained in step # 201 and the longitudinal direction 360 of the image sensor 211 is obtained. Based on this angle, the amount of rotation of the image sensor holding frame 367 necessary to make the longitudinal direction 360 of the image sensor 211 substantially coincide with the direction of the auxiliary line based on the edge is converted into the number of pulses of the photo interrupter 364. Ask.

  Once the tilt correction pulse is calculated, the motor drive amount is then calculated (# 211). In this step, the number of driving steps (driving amount) of the step motor 365 is obtained. Subsequently, it is determined whether or not the driving amount calculated here is smaller than a determination value (# 213). If the result of this determination is that the drive amount is greater than the determination value, motor drive is performed (# 215). Here, the step motor 365 is driven by the calculated number of steps. The rotation amount of the image sensor holding frame 367 is counted by the number of output pulses from the photo interrupter 364, and the motor is controlled while performing feedback control. Position control can be performed more correctly when feedback control is performed using a signal from the photo interrupter 364 directly connected to the image sensor 221. If the control is performed only with the number of pulses of the step motor 365, there is a possibility that the backlash of the mechanism is not correctly controlled when the rotation direction of the step motor 365 is reversed. When the motor is driven or when the result of determination in step # 213 is that the drive amount is smaller than the determination value, the flow returns to the original flow.

  As described above, in the subroutine of the automatic tilt correction process, based on the image data of the photographed image, the horizontally long line in the image (the vertically long line in the case of the vertical position) and the horizontally long direction of the image sensor 211 are displayed. The image sensor 211 is rotated so that the lines match.

  In the present embodiment, the rotation amount of the image sensor holding frame 367 is detected from the photo interrupter 364 and the feedback control is performed. However, the open control may be performed only by the driving step of the step motor 365.

  Next, the finder display subroutine in step # 15 will be described with reference to FIG. In this finder display, the subject image is optically displayed by an optical finder, and in this case, shooting information and a shooting range are displayed.

  When the finder display flow shown in FIG. 9A is entered, first, driving of the information display liquid crystal is started (# 121). In this step, driving of the information display liquid crystals 206a and 206b of the in-finder display device 206 is started. The information display liquid crystals 206a and 206b have a photographing mode such as a program photographing mode (P), a shutter speed (“250” in the drawing), an aperture value (“F5.6” in the drawing), and exposure correction (in the drawing). “+0.7”), the flash status and the like are displayed. In this step, the information display liquid crystals 206a and 206b are started to be driven. However, since the backlight is not lit, the photographer cannot visually recognize at this stage.

  Subsequently, it is determined whether or not the horizontal position is selected (# 123). Since the vertical position or the horizontal position can be set by the vertical / horizontal button 37, the determination is made in this step based on the vertical / horizontal setting state. Since the vertical position and the horizontal position change alternately each time the vertical / horizontal button 37 is operated, the latest setting state is confirmed in this flow.

  If the result of determination in step # 123 is that the horizontal position has been selected, the horizontal position liquid crystal backlight is turned on (# 125). When this laterally positioned liquid crystal backlight is turned on, as shown in FIG. 9B, the information display liquid crystal 206a is illuminated, and the photographing information arranged in a horizontal row can be visually recognized.

  On the other hand, if the result of determination in step # 123 is that the horizontal position has not been selected, the vertical position liquid crystal backlight is turned on (# 127). When this vertical position liquid crystal backlight is turned on, the information display liquid crystal 206b is illuminated as shown in FIG. 9C, and photographing information arranged in a vertical line can be visually recognized.

  When the horizontal position liquid crystal backlight is turned on in step # 125 or the vertical position liquid crystal backlight is turned on in step # 127, the selected aspect ruled line is turned on (# 129). In this step, according to the set aspect ratio and vertical / horizontal position, as shown in FIGS. 9B and 9C, ruled lines 206c and 206d indicating the photographing range are displayed on the full LCD 205. That is, when the horizontal position is set, as shown in FIG. 9B, two upper and lower ruled lines of the ruled line 206c are displayed, and when the vertical position is set, FIG. 9 ( As shown in c), two ruled lines on the left and right of the ruled line 206d are displayed. The ruled lines 206c and 206d displayed here are performed based on the set image data output area in steps # 103 and # 107 (see FIG. 11) described later.

  When the selected aspect ruled line is turned on, the original flow is restored. Thus, in the present embodiment, the display position of the shooting information is changed according to the vertical position or the horizontal position. In addition, the shooting range is displayed by ruled lines 206c and 206d in the optical viewfinder. For this reason, even if the vertical position, horizontal position, and aspect ratio are changed, the shooting range and necessary shooting information can be confirmed in the optical viewfinder, which is very convenient.

  In the present embodiment, the shooting range is indicated by a ruled line, but it is of course possible to allow only the shooting range to be transmitted by the full-screen LCD 205 and to block light outside the shooting range. When only the ruled lines are transmitted as in the present embodiment and the other lines are transmitted, it is possible to observe the surroundings other than the shooting range, and when only the shooting range is transmitted, only the completed image is displayed. It can be easily grasped.

  Next, the live view display subroutine in step # 37 will be described with reference to FIG. In this subroutine, the subject image is displayed on the rear LCD 39 based on the image data from the image sensor 221 and the image data in the image data output area set by the setting change subroutine.

  In the live view display flow shown in FIG. 10A, first, the selected aspect display coordinates are set (# 131). In this step, coordinates indicating a range to be displayed as a subject image are set based on the set vertical / horizontal position and aspect ratio information.

  Subsequently, the outside of the image area is painted black (# 133). In this step, based on the display coordinates set in step # 131, as shown in FIGS. 10B to 10E, the outside of the image area is painted black, that is, outside the image display area. 10B is a 4: 3 landscape image, FIG. 10C is a 16: 9 landscape image, FIG. 10D is a 2: 3 portrait image, and FIG. 10E is a 9:16 portrait image. It is an area shown.

  If the area outside the image area is black, information display coordinates are set (# 135). In this step, when the image is in the horizontally long position, as shown in FIGS. 10B and 10C, coordinates for displaying the shooting information in a horizontal row below the image area are set. In the case of the vertically long position, as shown in FIGS. 10D and 10E, coordinates for displaying shooting information in a single vertical column on the right side of the image area are set.

  Once the information display area coordinates are set, next, information display is started (# 136). In this step, the shooting information is displayed below or on the right side of the image area. Subsequently, live view image display is started (# 137). In this step, a subject image is displayed as a moving image for observation based on the image data from the image sensor 221 in the image area of the rear LCD 39. Subsequently, the liquid crystal backlight is turned on (# 139). Thereby, the live view display and the shooting information on the rear LCD 39 can be visually recognized. The photographer can determine the composition while observing the subject image and perform photographing.

  As described above, in the present embodiment, when live view display is performed on the rear LCD 39, the subject image is displayed in consideration of the set vertical and horizontal positions and aspect ratio. In addition, the display position of the shooting information is changed according to the vertical and horizontal positions of the image. For this reason, even if the vertical position, the horizontal position, and the aspect ratio are changed, the shooting range and necessary shooting information can be confirmed by the live view display, which is very convenient.

  In the present embodiment, the outside of the image area is painted black so that the image is not displayed at all. However, the present invention is not limited to this. Of course, it does not matter even if the display is made transparent. When displaying with ruled lines or displaying with translucent lines, the image data for live view display is not limited to the image data output area but is output to the rear LCD 39 including surrounding image data.

  Next, the setting change 1 subroutine in step # 43 will be described with reference to the flowchart shown in FIG. Various settings can be changed in the menu mode, but only a part of the flowchart shown in FIG.

  That is, the flow shown in FIG. 11A shows a case where the mode for changing the aspect ratio is selected by operating the operation members such as the cross button 32 and the vertical / horizontal button 37 in the upper setting change flow.

  When the setting change flow shown in FIG. 11A is entered, it is first determined whether or not an aspect change operation has been performed (# 101). This aspect change operation is performed by selecting the aspect change by operating the cross button 32 on the menu screen of the rear LCD 39 and determining the selected aspect ratio by the OK button 33.

  If the result of determination in step # 101 is that the aspect setting has been changed, the aspect setting is changed (# 103). That is, each time the right cross button of the cross buttons 32 is operated, the aspect ratio is sequentially changed to 4: 3, 3: 2, 16: 9 as shown in FIG. When the left cross button is operated, the order is changed in the reverse order.

  When the aspect setting change in step # 103 is completed, or if the result of determination in step # 101 is that an aspect change operation has not been performed, it is next determined whether or not a vertical / horizontal position change operation has been performed (#). 105). In this step, it is determined whether or not the vertical / horizontal button 37 has been operated.

  If the result of determination in step # 105 is that a vertical / horizontal position change operation has been performed, vertical / horizontal setting change is performed (# 107). Here, as shown in FIG. 11B, when the 4: 3 landscape is set, the setting is changed to 3: 4 portrait. If 3: 2 landscape is set, the setting is changed to 2: 3 portrait, and if it is set to 16: 9 landscape, the setting is changed to 9:16 portrait.

  If the setting change 1 is performed in step # 107 or if the result of determination in step # 105 is that the vertical / horizontal position changing operation has not been performed, the process returns to the original flow.

  Thus, in the present embodiment, the image sensor 221 is rotated so that the longitudinal direction 360 of the image sensor 221 and the longitudinal direction of the captured image substantially coincide. For this reason, even when photographing a building or the like, it is possible to match the photographed image with the horizontal line of the image sensor. In other words, it can be prevented that the horizontal line of the photographed image becomes oblique and the image becomes unsightly. In particular, in the present embodiment, when live view display is performed, the tilt is corrected by image processing of the image data, and the correction is automatically performed without the consciousness of the photographer. is there.

  In the present embodiment, when the continuous shooting mode is set, the automatic tilt correction process is performed before the next shooting after the one-frame shooting ends. Even if the camera is gradually tilted during continuous shooting, the tilt of the image sensor is automatically corrected, and a photo in which the horizontal line matches the captured image can be taken.

  Furthermore, in the present embodiment, in the case of a horizontal position or a landscape image, the landscape direction of the image and the longitudinal direction 360 of the image sensor 221 coincide with each other, and in the case of a portrait position or a portrait image, the portrait direction of the image. And the longitudinal direction 360 of the image sensor 221 are made to coincide with each other. Since image processing is performed so that the longitudinal directions of the image sensor 221 coincide with each other in this way, it is easy to improve accuracy.

  In the present embodiment, the longitudinal direction 360 of the image sensor 221 and the longitudinal direction of the captured image are made to coincide with each other. However, even if they are made to coincide with each other in the direction perpendicular to the longitudinal direction, the accuracy slightly decreases. Of course it doesn't matter.

  In this embodiment, the subject image is displayed in the optical viewfinder display mode. However, the optical viewfinder display mode may be omitted and the live view display mode may be used. In this case, the automatic tilt correction process is performed. be able to.

  Next, a second embodiment of the present invention will be described with reference to FIGS. In the first embodiment, the tilt is automatically corrected when live view display or continuous shooting is performed. In the second embodiment, when the power of the camera body is reset, a correction value is stored in advance for the deviation between the horizontal and vertical inclinations of the image sensor 221 and the finder at the time of shipment from the factory. Make corrections. Further, when an operation member for tilt adjustment is operated, the tilt correction value can be adjusted by the user by storing the tilt correction value in place of the factory correction value.

  The configuration of the digital single-lens reflex camera according to the second embodiment is the same as that shown in FIGS. 1 to 5 and FIG. However, in the present embodiment, a tilt adjustment button is disposed on the back surface of the camera body 200. The tilt adjustment switch linked to the tilt adjustment button is one of various switches 269 and is detected by the switch detection circuit 268.

  Next, the operation in the present embodiment will be described with reference to the flowcharts shown in FIGS. FIG. 13 shows a power-on reset operation by the body CPU 251 on the camera body 200 side. Steps for performing the same processing as in the first embodiment shown in FIG. The explanation is centered.

  After entering the power-on reset flow and performing the dust removal operation in step # 7, the image sensor is then rotated (# 8). In this step, the inclination of the image sensor 221 is driven to the initial position based on the inclination data adjusted and stored at the time of factory shipment. That is, when the camera is shipped from the factory, the camera body 200 is positioned horizontally, and at this time, the tilt data for obtaining the longitudinal direction 360 of the image sensor 221 to coincide with the horizontal line direction is obtained based on the test chart. 277 etc. The tilt data stored at this time is the amount of movement of the protrusion 367a or 367b from the engagement position of the main body side protrusion 368.

  When the image sensor is rotated, step # 9 and subsequent steps are executed as in the first embodiment. Subsequently, if the result of determination in step # 21 is that the 1R switch is on, shooting operation 2 is executed (# 42). This photographing operation 2 is also executed in an inclination adjustment operation in step # 47 described later. For this reason, image recording is not executed when called in the tilt adjustment operation. The subroutine of the photographing operation 2 will be described later with reference to FIG.

  When the subroutine of shooting operation 2 is executed, or when the result of determination in step # 21 is that the 1R switch is off, it is determined whether or not the setting switch is on as in the first embodiment (# 23). ). If the result of this determination is that the setting switch is on, setting change 2 is performed (# 44). This setting change subroutine is substantially the same as the setting change 1 of the first embodiment, but in this embodiment, the image sensor 221 is rotated. That is, the position of the image sensor 221 is initialized based on the correction pulse (inclination data) stored in steps # 251 and # 253 described later according to the set vertical position and horizontal position. The subroutine for setting change 2 will be described later with reference to FIG.

  During the power-on reset flow, if the result of determination in step # 25 is that the regeneration switch is not on, it is determined whether or not the tilt adjustment switch is on (# 26). If the result of this determination is that the tilt adjustment switch is on, tilt adjustment operation is performed (# 47). In this tilt adjustment operation, the tilt of the image sensor 221 is adjusted to the horizontal line based on the image data at the timing when the release button 21 is half-pressed. The subroutine for the tilt adjustment operation will be described later with reference to FIG.

  When the tilt adjustment operation is executed, or when the result of determination in step # 26 is that the tilt adjustment switch is not on, step # 27 and subsequent steps are executed as in the first embodiment.

  Next, a subroutine for the tilt adjustment operation in step # 47 will be described using the flowchart shown in FIG. When entering the subroutine of the tilt adjustment operation, first, as in step # 13 (see FIG. 6), finder photometry and exposure amount calculation are performed (# 221), and finder display is performed as in step # 15 (# 223). ). Thereafter, the live view display is turned off as in step # 17 (# 225).

  Subsequently, as in step # 203, the aspect is determined (# 227). If the result of this determination is landscape orientation, the viewfinder display is landscape orientation (# 229). In this step, the display as shown in FIG. On the other hand, if the result of determination is portrait orientation, the fine display is oriented vertically (# 231). In this step, the display as shown in FIG.

  Once the finder display in step # 229 or # 231 is performed, it is next determined whether or not the 1R switch is on (# 233). If the result of this determination is off, it waits for it to turn on. If the result of determination is that it is on, it is driven to the initial position (# 235). That is, the image sensor holding frame 367 is driven so that the image sensor 221 is at the initial position. The initial position is the position driven in step # 8.

  Subsequently, a subroutine for photographing operation 2 is executed (# 237). In this step, image data is acquired from the image sensor 221. As described above, in the shooting operation 2 executed during the tilt adjustment operation, the read image data is not recorded. The subroutine of this photographing operation 2 will be described later with reference to FIG.

  When the shooting operation 2 subroutine is executed, edge enhancement image processing is performed (# 239). In this step, edge enhancement processing is performed using the image data acquired in the shooting operation 2 in step # 237 so that a straight line portion can be easily extracted. Subsequently, the number of tilted dots is calculated (# 241). That is, the angle formed by the longitudinal direction 360 of the image sensor 221 and the horizontal line (in the case of landscape orientation) extracted by the edge enhancement process is calculated as the number of inclined dots.

  Next, the motor drive amount is calculated using the calculated number of dots (# 243). Then, the motor drive amount is compared with the determination value to determine whether or not the drive amount is smaller than the determination value (# 245). If the result of this determination is that the drive amount is greater than the determination value, motor drive is performed (# 247). That is, the step motor 365 is driven and driven until the longitudinal direction 360 of the image sensor 221 becomes the horizontal direction. In this embodiment, the determination is made based on the driving amount of the step motor 365, but the determination may be made based on the number of inclined dots and a predetermined determination value. At this time, it is necessary to add a determination process so that the motor drive amount becomes 0 as a result of the calculation and the process is not an infinite loop. When the motor is driven, the process returns to step # 237 and the above-described operation is executed again.

  If the result of determination in step # 245 is that the drive amount is smaller than the determination value, next, aspect determination is performed as in steps # 203 and # 227 (# 249). If the result of this determination is that it is in the horizontal position, the number of tilt dots calculated in step # 241 is stored as a correction pulse in the horizontal position (# 251). On the other hand, if the result of determination in step # 249 is that the aspect is the vertical position, the number of tilted dots calculated in step # 241 is stored as a correction pulse at the vertical position (# 253). When the correction pulse is stored, the original flow is restored.

  As described above, in the subroutine of the tilt adjustment operation, when the release button 21 is half-pressed, the image data is captured, and in the case of a horizontally long image, the longitudinal direction 360 of the image sensor 221 is the horizontal line direction. In the case of a vertically long image, a correction pulse for matching the vertical line of the captured image with the longitudinal direction 360 of the image sensor 221 is obtained and stored.

  Next, the sub-routine of the shooting operation 2 executed in steps # 41 (see FIG. 14) and # 235 will be described with reference to FIG. This shooting operation subroutine is the same as the shooting operation 1 subroutine shown in FIG. 7, except that the automatic tilt correction process in step # 60 is omitted, and steps # 62 and # 64 are executed instead of steps # 61 and # 63. Since only step # 82 is added, this difference will be mainly described.

  In step # 51, it is determined whether or not the image is live view. If the result is live view, imager AF is performed (# 57), and imager photometry and exposure amount calculation are performed (# 59). Thereafter, although the automatic tilt correction process is performed in the photographing operation 1 (# 60), this step is omitted in the present embodiment.

  If finder photometry and exposure calculation are performed in step # 55, or if imager photometry and exposure calculation are performed in step # 59, it is next determined whether or not the 2R switch is on (# 62). If the result of this determination is that the 2R switch is not on, it is determined whether or not the 1R switch is on (# 64).

  If the result of determination in step # 64 is that the 1R switch is on, the release button 21 remains pressed halfway, so the routine returns to step # 62, and step # 62 and step # 64 are determined alternately. It will be in a standby state. If the result of determination in step # 64 is that the 1R switch is turned off, the photographer's finger has been released from the release button 21, so the flow of shooting operation 2 is terminated, and the flow returns to the original flow.

  As a result of the determination in step # 62, when the 2R switch is turned on, in step # 65 and subsequent steps, the imaging operation is started as in the first embodiment. Once the imaging operation has been executed and image processing has been performed in step # 81, it is next determined whether or not tilt adjustment is in progress (# 82). In this step, it is determined whether or not the photographing operation 2 in step # 237 is being executed in the flow of the tilt adjustment operation shown in FIG.

  If the result of determination in step # 82 is that tilt adjustment is not in progress, normal shooting is performed, so that the image data processed in step # 81 is recorded in recording medium A285 or recording medium B287 (# 83). Return to the flow. On the other hand, if the result of determination is that tilt adjustment is in progress, step # 83 is skipped and the process returns to the original flow. This is because the tilt adjustment is started by half-pressing the release button 21, and in this case, it is not necessary to record an image.

  Next, the setting change 2 subroutine in step # 44 will be described with reference to the flowchart shown in FIG. Since the processing of steps # 101 to # 107 is the same as that of the setting change 1 subroutine of FIG. 11, steps for performing the same processing are denoted by the same step numbers, and detailed description thereof is omitted.

  If the result of determination in step # 105 is that no vertical / horizontal position change operation has been performed, or if vertical / horizontal setting has been changed in step # 107, the image sensor is rotated (# 109). In this step, the step motor 365 is driven based on the correction pulse stored in step # 251 or # 253, and the horizontal line direction of the image sensor 221 and the horizontal line direction of the captured image are determined according to the vertical position or the horizontal position. Match. When the image sensor is rotated, the original flow is restored.

  As described above, in the second embodiment of the present invention, the angle between the straight line extracted by edge enhancement of the image at this time and the horizontal line direction of the image sensor 221 is obtained in the state where the optical finder is displayed, and this angle is obtained. The rotation control of the image sensor 221 is performed based on the above. For this reason, even when photographing a building or the like, the captured image and the horizontal line of the image sensor 221 can be matched.

  In the present embodiment, although it is provisional at the time of shipment from the factory, it is easy to use because the image sensor 221 is aligned with the horizontal line in the viewfinder. In addition, when the tilt adjustment mode is set, the correction value is readjusted by the user and the horizontal lines of the image sensor 221 and the viewfinder are matched, so that the captured image is correct with respect to the viewfinder horizontal line and does not become unsightly.

  In the present embodiment, the live view display mode is provided, but the live view display mode may be omitted. Even in this case, the tilt adjustment mode can be executed.

  Next, a third embodiment of the present invention will be described with reference to FIGS. In the first and second embodiments, the rotation amount of the image sensor 221 is obtained by processing the image data from the image sensor 221 to extract an edge, and using this edge, the horizontal line of the captured image is automatically obtained, and the inclination is calculated. It was calculated. In the third embodiment, the horizontal line of the captured image for obtaining the inclination is displayed so that the photographer can select it manually.

  The configuration of this embodiment is the same as that of the second embodiment, except that the power-on reset flow shown in FIG. 13 is replaced with that in FIG. 17 and the inclination correction processing subroutine shown in FIG. 18 is executed accordingly. To do. This difference will be mainly described. In the second embodiment, an inclination adjustment switch is provided as one of the various switches 269. However, in this embodiment, an inclination correction switch that is linked to an inclination correction button is provided. In addition, in the tilt correction mode performed by turning on the tilt correction switch, there are auto correction and manual correction, and this setting is performed in the menu mode.

  When the flow of power-on reset shown in FIG. 17 is entered, step # 1 and subsequent steps are executed as in the second embodiment. If the regeneration switch is not on in step # 25, it is next determined whether or not the tilt correction switch is on (# 26A). If the result of this determination is that the tilt correction switch is on, tilt correction processing is executed (# 48). This step is the same as the tilt adjustment operation in step # 47, but in this process, manual correction can be selected in addition to auto correction. The subroutine for the inclination correction process will be described later with reference to FIG.

  If the flow of the inclination correction process is entered, it is first determined whether or not the live view display mode is set (# 261). Here, as a result of the determination in step # 11, it is determined whether live view display is being executed. If the result of determination in step # 261 is not live view display mode, the tilt correction processing subroutine is terminated as it is, and the flow returns to the original flow.

  If the result of determination in step # 261 is live view display mode, it is next determined whether auto correction or manual correction is set (# 263). As described above, the auto correction / manual correction in the tilt correction processing is set in the menu mode.

  If the result of determination in step # 263 is that manual correction has been set, next, image processing for edge enhancement of the captured image is performed (# 265). In step # 261, the live view display mode is determined, image data is output from the image sensor 221 for live view display, and a subject image as shown in FIG. Live view is displayed. In this step, the image processing circuit 257 performs edge enhancement image processing using the live view display image data.

  Once edge enhancement has been performed, the aspect is then determined in the same manner as steps # 227 and # 249 (# 267). If the result of this determination is that the camera body 200 has been set to the horizontal position, a horizontal auxiliary line is displayed (# 269). Here, for example, as shown in FIG. 19B, horizontal auxiliary lines 374 and 375 extracted by edge enhancement are displayed.

  If the result of determination in step # 267 is that the camera body 200 has been set to the vertical position, a vertical auxiliary line is displayed (# 271). Here, for example, as shown in FIG. 21B, auxiliary lines 371, 378, and 379 in a direction orthogonal to the horizontal line extracted by edge enhancement are displayed.

  If an auxiliary line is displayed in step # 269 or # 271, next, an auxiliary line is selected and input (# 273). In this step, the photographer selects one of the auxiliary lines 374 and 375 displayed on the rear LCD 39 as a horizontal line or one of the auxiliary lines 377 to 379 as a line orthogonal to the horizontal line.

  That is, when two auxiliary lines 374 and 375 are extracted and displayed as shown in FIG. 19 (b), photographing is performed so that the line on the railing of the bridge as shown in FIG. 19 (c) becomes a horizontal line. If desired, the photographer can select the auxiliary line 374. On the other hand, as shown in FIG. 19D, when the photographer wants to photograph so that the line below the railing of the bridge is a horizontal line, the photographer may select the auxiliary line 375.

  In addition, when three auxiliary lines 377, 378, and 379 are extracted and displayed as shown in FIG. 20B, the building line on the left side as shown in FIG. When it is desired to shoot along the direction 360, the photographer may select the auxiliary line 377. On the other hand, when the photographer wants to photograph the right building line as shown in FIG. 20D along the longitudinal direction 360 of the image sensor 221, the photographer may select the auxiliary line 379.

  For selection, the cursor is moved by operating the cross button 32, and the auxiliary line is determined and input by the OK button 33. Subsequently, the inclination of the auxiliary line selected in step # 273 is calculated (# 275). In this step, the angle formed by the longitudinal direction 360 of the image sensor 221 and the selected auxiliary line is calculated.

  If the result of determination in step # 263 is auto correction, edge-enhanced image processing of the captured image is performed as in step # 265 (# 291). Subsequently, as in step # 267, the aspect is determined (# 293). If the horizontal position is set as a result of this determination, the inclination of the horizontal auxiliary line 381 as shown in FIG. 21A is calculated (# 295). On the other hand, if the vertical position is set as a result of the determination, the inclination of the vertical auxiliary line 382 as shown in FIG. 21B is calculated (# 297). Here, as a result of the edge enhancement processing, a plurality of auxiliary lines may be extracted as in the case of steps # 269 and # 271. In this case, the auxiliary line with the smallest inclination or the long auxiliary line is selected from the plurality of auxiliary lines in the horizontal direction.

  If the inclination of the selected line is calculated in step # 273 or the inclination of the auxiliary line is calculated in step # 295 or # 297, an inclination correction pulse is then calculated (# 277). In this step, the number of correction pulses converted by the photo interrupter 364 is obtained based on the calculated inclination.

  Once the correction pulse is obtained, the motor drive amount is calculated (# 279). In this step, the number of steps for driving the step motor 365, that is, the driving amount is calculated based on the number of correction pulses. Subsequently, the drive amount calculated in step # 279 is compared with the determination value to determine whether the drive amount is smaller than the determination value (# 281).

  If the result of determination in step # 281 is that the drive amount is greater than the determination value, motor drive is performed (# 283). That is, the step motor 265 is driven based on the drive amount obtained in step # 279.

  When the motor is driven, next, imaging is performed (# 285). In this step, image data for live view display is acquired from the image sensor 221 for tilt correction processing. When image data is acquired by imaging, image processing for edge enhancement of the captured image is performed as in steps # 263 and # 291 (# 287). When the image processing is performed, the process returns to step # 277 and the above-described operation is performed. That is, corresponding to the auxiliary line calculated in the previous step # 277, using the auxiliary line obtained by the edge enhancement processing in step # 287, the motor drive amount is obtained again, and the determination is made in step # 281.

  If the drive amount is smaller than the determination value as a result of determination in step # 281, next, correction completion display is performed (# 289). In this step, the rear LCD 39 displays that the tilt correction has been completed.

  As described above, in the third embodiment of the present invention, manual correction that is performed manually in addition to automatic correction that automatically performs tilt correction of the image sensor 221 is provided. For this reason, when a plurality of auxiliary lines are extracted by image processing such as edge enhancement, it is possible to select an auxiliary line according to the photographer's intention.

  In the first and second embodiments, as in the present embodiment, a tilt adjustment switch may be provided to perform manual correction.

As described above, in each embodiment of the present invention, an auxiliary line is extracted using image data, and the orientation of the image sensor 221 is adjusted so that the auxiliary line substantially coincides with the longitudinal direction of the image sensor 221. is doing. For this reason, even when photographing a building or the like, the captured image and the horizontal line of the image sensor can be matched.

  In each of the embodiments of the present invention, the camera can switch the effective area from the image output of the image sensor 221 in accordance with the switching between the vertical and horizontal positions (vertical image and horizontal image). The present invention can also be applied to a normal camera that does not have a camera.

  In each embodiment of the present invention, the image sensor holding frame 367 is driven using the step motor 365. However, the present invention is not limited to this, and other drive mechanisms such as a DC motor and an ultrasonic motor are used. May be.

  Furthermore, in each embodiment of the present invention, edge enhancement processing is performed when extracting auxiliary lines. However, the present invention is not limited to this, and any image processing that can extract horizontal lines and vertical lines may be used.

  Furthermore, in each embodiment of the present invention, the image data that is valid depending on the vertical / horizontal position and the aspect ratio is selected from the image data output from the image sensor driving circuit 223 by the preprocessing circuit 225 and the image processing circuit 257. Was. However, the present invention is not limited to this. For example, when reading from the image sensor 221, image data may be read only in a range determined by the vertical and horizontal positions and the aspect ratio.

  Furthermore, in the present embodiment, the digital camera is used as the photographing device. However, the camera may be a digital single-lens reflex camera or a compact digital camera, and may be used for moving images such as video cameras and movie cameras. It may be a camera, or may be a camera built in a mobile phone or a personal digital assistant (PDA).

  The present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, you may delete some components of all the components shown by embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

1 is an external perspective view of a digital camera according to a first embodiment of the present invention as viewed from the front side. It is the external appearance perspective view seen from the back side of the digital camera which concerns on 1st Embodiment of this invention. It is a block diagram which shows an electric circuit in the digital camera concerning 1st Embodiment of this invention. It is a figure which shows the image circle of an image pick-up element, the vertical and horizontal position, and the aspect in the digital camera concerning 1st Embodiment of this invention. 2A and 2B are diagrams illustrating a rotation mechanism of an image sensor in the digital camera according to the first embodiment of the present invention, in which FIG. 1A is a cross-sectional view of the rotation mechanism, and FIG. It is a perspective view. 4 is a flowchart showing a power-on reset operation in the digital camera according to the first embodiment of the present invention. 6 is a flowchart showing a shooting operation 1 in the digital camera according to the first embodiment of the present invention. 5 is a flowchart illustrating an operation of automatic tilt correction processing in the digital camera according to the first embodiment of the present invention. FIG. 4 is a diagram for explaining the operation of finder display in the digital camera according to the first embodiment of the present invention, (a) is a flowchart of finder display, (b) shows finder display in a horizontal position, and (c). Indicates the viewfinder display in the vertical position. 4A and 4B are diagrams for explaining an operation of live view display in the digital camera according to the first embodiment of the present invention, where FIG. 5A is a flowchart of live view display, and FIG. 5B is a live view display at a horizontal position 4: 3. (C) shows live view display at the horizontal position 1: 9, (d) shows live view display at the vertical position 2: 3, and (e) shows live view display at the vertical position 9:16. Show the display. 4A and 4B are diagrams for explaining the operation of setting change 1 in the digital camera according to the first embodiment of the present invention, FIG. 5A is a flowchart of setting change, and FIG. . 4A and 4B are diagrams showing auxiliary line display in the tilt correction process in the digital camera according to the first embodiment of the present invention. FIG. 5A is a diagram illustrating a case where the camera is in a horizontal position, and FIG. Show the display. It is a flowchart which shows the operation | movement of a power-on reset in the digital camera in 2nd Embodiment of this invention. It is a flowchart which shows the operation | movement of inclination adjustment in the digital camera in 2nd Embodiment of this invention. 6 is a flowchart showing a shooting operation 2 in the digital camera according to the second embodiment of the present invention. In the digital camera in 2nd Embodiment of this invention, it is a figure explaining the operation | movement of the setting change 2, (a) is a flowchart of a setting change, (b) is a figure which shows the relationship between a vertical / horizontal position and an aspect. . It is a flowchart which shows the operation | movement of a power-on reset in the digital camera in 3rd Embodiment of this invention. It is a flowchart which shows the operation | movement of an inclination correction process in the digital camera in 3rd Embodiment of this invention. In the digital camera in 3rd Embodiment of this invention, it is an example of the inclination correction | amendment in manual correction, (a) is the original image as it was imaged, (b) shows a mode that the auxiliary line was extracted by edge emphasis processing. , (C) shows a state corrected by the auxiliary line 374, and (d) shows a state corrected by the auxiliary line 375. In the digital camera in 3rd Embodiment of this invention, it is an example of the inclination correction | amendment in manual correction, (a) is the original image as it was imaged, (b) shows a mode that the auxiliary line was extracted by edge emphasis processing. , (C) shows a state corrected by the auxiliary line 377, and (d) shows a state corrected by the auxiliary line 379. In the digital camera in 3rd Embodiment of this invention, it is an example of the inclination correction | amendment in auto correction | amendment, (a) is a figure which shows the auxiliary line in case a camera main body is a horizontal position, (b) is a camera main body vertically It is a figure which shows the auxiliary line in the case of a position.

Explanation of symbols

21 ... Release button, 22 ... Front dial, 23 ... Rear dial, 24 ... Body mount, 31 ... LV display button, 32 ... Cross button, 33 ... OK button, 34 ... Power switch, 35 ... Menu button, 36 ... Play button, 37 ... Vertical / horizontal button, 38 ... Eyepiece, 39 ... Rear LCD, 40 ... Control panel, DESCRIPTION OF SYMBOLS 50 ... Built-in flash, 100 ... Interchangeable lens, 101 ... Imaging optical system, 103 ... Aperture, 105 ... Focus position detection mechanism, 106 ... Zoom position detection mechanism, 107 ... Optical system drive mechanism, 109 ... Aperture drive mechanism, 111 ... Lens CPU, 113 ... Lens ROM, 115 ... Lens RAM, 120 ... Image circle, 200 ... Camera body, 201 ..Movable mirror , 203 ... sub-mirror, 204 ... screen, 205 ... full-screen LCD, 206 ... finder display device, 206a ... information display liquid crystal, 206b ... information display liquid crystal, 207 ... penta Prism, 209 ... eyepiece, 211 ... photometric element, 212 ... photometric processing circuit, 213 ... shutter, 215 ... dustproof filter, 217 ... low pass filter, 221 ... image sensor 223: Image sensor drive circuit, 225: Pre-processing circuit, 227 ... Tilt sensor, 228 ... Tilt detection circuit, 229 ... Shake sensor, 230 ... Shake correction circuit, 231 ... Shift mechanism drive circuit, 233 ... Shift mechanism, 235 ... Dustproof filter drive circuit, 237 ... Shutter drive mechanism, 239 ... Mirror drive 241 ... phase difference AF sensor, 243 ... phase difference AF processing circuit, 244 ... light source sensor, 245 ... light source processing circuit, 246 ... illuminance sensor, 247 ... illuminance processing circuit 248 ... Remote control reception sensor, 249 ... Remote control reception processing circuit, 250 ... ASIC, 251 ... Body CPU, 252 ... Bus, 253 ... Contrast AF circuit, 255 ... AE Circuit, 257... Image processing circuit, 259... Compression / decompression circuit, 261... Video signal output circuit, 263... LCD drive circuit, 265. Circuits, 269, various switches, 271, input / output circuits, 273, communication circuits, 275, flash memory control circuits, 277, flash memory 279 ... SDRAM control circuit, 281 ... SDRAM, 283 ... recording medium control circuit, 285 ... recording medium A, 287 ... recording medium B, 289 ... dial detection circuit, 291 ..Power supply circuit, 292 ... battery, 293 ... external power supply, 295 ... in-finder display drive circuit, 297 ... control panel drive circuit, 301 ... charge circuit, 303 ... flash Light emitting circuit, 305 ... arc tube, 310 ... external flash, 310a ... contact, 310b ... contact, 311 ... flash CPU, 313 ... charging circuit, 315 ... flash light emitting circuit 317 ... arc tube, 318 ... reflective shade, 319 ... zoom drive circuit, 320 ... external device (PC), 320a ... contact, 321, Device CPU, 330 ... external display device (TV), 330a ... contact, 331 ... display device drive circuit, 333 ... display device, 341 ... communication contact, 360 ... longitudinal direction 361: Rotating mechanism, 362: Rotating mechanism driving circuit, 364: Photo interrupter, 364b: PI blade, 365: Step motor, 366 ... Worm gear, 367 ... Imaging element Holding frame, 367a ... projection, 367b ... projection, 368 ... main body side projection, 371-382 ... auxiliary line

Claims (11)

An imaging unit that is rotatable with respect to the imaging device and outputs a subject image as image data;
An image processing unit that detects one or more auxiliary lines from the image data by image processing;
A first rotation control unit that controls the imaging unit to rotate so that one of the auxiliary lines is horizontal or vertical;
An imaging device comprising: An auxiliary line selection unit that selects one of the plurality of auxiliary lines;
The first rotation control unit controls rotation of the imaging unit based on the auxiliary line selected by the auxiliary line selection unit;
The imaging apparatus according to claim 1.   The first rotation control unit controls rotation of the imaging unit so that a substantially horizontal auxiliary line is horizontal when the image data is horizontally long, and approximately vertical auxiliary when the image data is vertically long. The imaging apparatus according to claim 1, wherein the imaging unit is controlled to rotate so that a line is vertical.   The imaging apparatus according to claim 1, wherein the first rotation control unit controls the rotation of the imaging unit immediately before shooting.   5. The imaging apparatus according to claim 4, wherein, in the case of continuous shooting, the first rotation control unit controls rotation of the imaging unit every time shooting is performed. An imaging unit that is rotatable with respect to the imaging device and outputs a subject image as image data;
A display unit for optically displaying the subject image;
A storage unit for storing a difference between the angle of the display unit and the angle of the imaging unit;
A second rotation control unit for controlling the rotation of the imaging unit based on the difference in angle;
An imaging device comprising:   The imaging apparatus according to claim 6, wherein the second rotation control unit performs rotation control so that the difference in angle is substantially zero. A rewriting unit for rewriting the difference in angle stored in the storage unit;
The second rotation control unit controls the rotation of the imaging unit based on the rewritten angle difference.
The imaging apparatus according to claim 6 or 7, wherein   The image pickup apparatus according to claim 6, wherein the second rotation control unit controls the image pickup unit to turn when the image pickup apparatus is powered on or immediately before shooting. From the imaging unit that can rotate with respect to the imaging device, the subject image is output as image data,
By image processing, one or more auxiliary lines are detected from the image data,
Rotating the imaging unit so that one of the auxiliary lines is horizontal or vertical;
And a method of controlling the imaging apparatus. From the imaging unit that can rotate with respect to the imaging device, the subject image is output as image data,
The subject image is optically displayed on the display unit,
Store the difference between the angle of the display unit and the angle of the imaging unit,
Based on the difference in angle, the imaging unit is controlled to rotate.
And a method of controlling the imaging apparatus.