JP6006024B2 - Imaging apparatus, imaging method, and program - Google Patents

Description

  The present invention relates to an imaging apparatus, an imaging method, and a program for imaging a subject and generating image data of the subject.

  2. Description of the Related Art In recent years, there has been known a technique in which an imaging device such as a digital camera is provided with a touch panel on a display screen of a display unit that displays an image, and a user performs an operation related to shooting with the touch panel (see Patent Document 1). In this technique, when the display unit displays an image, when a touch panel is touched, a predetermined area including the touch position is enlarged by an electronic zoom and displayed on the entire screen of the display unit.

Japanese Patent No. 4340358

  However, in the technique of Patent Document 1 described above, a user can perform an intuitive operation to enlarge and display a desired region. However, since the image is enlarged by electronic zoom, the resolution of the image is reduced. There was a problem.

  The present invention has been made in view of the above, and an imaging apparatus capable of enlarging and displaying a desired region by a user's intuitive operation without reducing the resolution of the image, and imaging An object is to provide a method and a program.

  In order to solve the above-described problems and achieve the object, an imaging apparatus according to the present invention condenses light from a predetermined visual field region, and allows a lens unit capable of optical zooming and light collected by the lens unit. An image capturing unit that receives light to generate image data, a display unit that can display an image corresponding to the image data generated by the image capturing unit, and a shooting area corresponding to a predetermined zoom magnification of the lens unit are extracted from the image. A trimming unit that cuts out and generates a trimmed image, and a photographing control unit that controls an optical zoom of the lens unit according to a zoom magnification corresponding to the trimmed image generated by the trimming unit.

  Moreover, the imaging apparatus according to the present invention is characterized in that in the above-mentioned invention, the imaging apparatus further includes a display control unit that displays the zoom information and the trimmed image on the imaging region on the display unit so as to be superimposed on the image.

  The imaging apparatus according to the present invention may further include an input unit that receives an input of an instruction signal for changing the position or size of the imaging region, and the display control unit is input from the input unit. The position or size of the shooting area on the image is changed according to the instruction signal.

  In the imaging device according to the present invention, in the above invention, the input unit is provided on a display screen of the display unit, detects a touch of an object from the outside, and outputs a position signal corresponding to the detected touch position. The photographing control unit causes the lens unit to perform optical zoom when the position signal is input from the touch panel.

  Further, in the imaging apparatus according to the present invention, in the above invention, the input unit includes a release switch that receives an input of a shooting preparation instruction signal that instructs a shooting preparation operation of the imaging apparatus. When the shooting preparation instruction signal is input from the release switch, the lens unit is caused to execute optical zoom.

  In the imaging device according to the present invention as set forth in the invention described above, when the imaging region does not pass through the optical axis of the lens unit, the display control unit applies the trimmed image generated by the trimming unit to the display unit. It is characterized by being displayed on the screen.

  In the imaging device according to the present invention, in the above invention, the display control unit displays the trimmed image generated by the trimming unit when the shooting area is larger than the zoom magnification of the optical zoom of the lens unit. It is characterized by being displayed in full screen.

  In the image pickup apparatus according to the present invention, in the above invention, a feature amount detection unit that detects a feature amount of a subject included in the shooting region is adjacent to the feature amount detected by the feature amount detection unit. A tracking subject setting unit that sets a tracking subject to be tracked between images, and the imaging control unit, when the tracking subject set by the tracking subject setting unit enters the imaging region, the lens unit And performing an optical zoom.

  Further, in the imaging device according to the present invention, in the above invention, the imaging control unit is configured such that when the tracking unit is out of the imaging area and the lens unit performs optical zoom, the lens unit The optical zoom is stopped.

  In addition, an imaging method according to the present invention includes a lens unit that can collect light from a predetermined visual field region and that can be optically zoomed, an imaging unit that receives light collected by the lens unit and generates image data; A display unit capable of displaying an image corresponding to the image data generated by the imaging unit, and an imaging method executed by the imaging device, wherein the imaging region corresponding to a predetermined zoom magnification by the lens unit is A trimming step of cutting out an image to generate a trimmed image; and a shooting control step of controlling an optical zoom of the lens unit according to a zoom magnification corresponding to the trimmed image generated in the trimming step. To do.

  In addition, a program according to the present invention includes a lens unit that collects light from a predetermined visual field area and that can be optically zoomed, an imaging unit that receives light collected by the lens unit and generates image data, A display unit capable of displaying an image corresponding to the image data generated by the imaging unit, and a program executed by the imaging device, wherein an imaging region corresponding to a predetermined zoom magnification by the lens unit is determined from the image A trimming step of cutting out and generating a trimmed image; and a shooting control step of controlling the optical zoom of the lens unit according to a zoom magnification corresponding to the trimmed image generated in the trimming step.

  According to the present invention, since the photographing control unit controls the optical zoom of the lens unit according to the zoom magnification corresponding to the trimmed image generated by the trimming unit, the user can perform an intuitive operation without reducing the resolution of the image. As a result, the desired area can be enlarged and displayed.

FIG. 1 is a diagram illustrating a configuration of a side facing a subject of the imaging apparatus according to the first embodiment of the present invention. FIG. 2 is a diagram illustrating a configuration on the side facing the photographer of the imaging apparatus according to the first embodiment of the present invention. FIG. 3 is a block diagram illustrating a functional configuration of the imaging apparatus according to the first embodiment of the present invention. FIG. 4 is a flowchart illustrating an outline of processing executed by the imaging apparatus according to the first embodiment of the present invention. FIG. 5 is a diagram illustrating an example of an image displayed by the display unit of the imaging apparatus according to the first embodiment of the present invention. FIG. 6 is a diagram illustrating a state in which a touch operation is performed on a screen of an image displayed by the display unit of the imaging apparatus according to the first embodiment of the present invention. FIG. 7 is a diagram illustrating a state in which a pinch operation is performed in the screen of an image displayed by the display unit of the imaging apparatus according to the first embodiment of the present invention. FIG. 8 is a screen transition diagram when a sub-image in the live view image displayed on the display unit of the imaging apparatus according to the first embodiment of the present invention is touched. FIG. 9 is another screen transition diagram when a sub-image in the live view image displayed by the display unit of the imaging apparatus according to the first embodiment of the present invention is touched. FIG. 10 is a flowchart illustrating an outline of processing executed by the imaging apparatus according to the second embodiment of the present invention. FIG. 11 is a diagram illustrating a situation when a touch operation is performed on an image displayed on the display unit of the imaging apparatus according to the second embodiment of the present invention. FIG. 12 is a diagram illustrating an outline of a display area calculation method when the display control unit of the imaging apparatus according to the second embodiment of the present invention displays a zoom frame superimposed on a live view image. FIG. 13 is a screen transition diagram when a slide operation is performed on the zoom frame in the live view image displayed by the display unit of the imaging apparatus according to the second embodiment of the present invention. FIG. 14 is a diagram for explaining an overview of a conversion method in which the shooting control unit of the imaging apparatus according to the second embodiment of the present invention converts the display area of the zoom frame into a focal length. FIG. 15 is a diagram illustrating an example of an image displayed by the display unit of the imaging apparatus according to the second embodiment of the present invention. FIG. 16 is a flowchart illustrating an outline of processing executed by the imaging apparatus according to the third embodiment of the present invention. FIG. 17 is a diagram illustrating a situation when tracking is started with a subject included in a region including a touch position touched with respect to an image displayed by the display unit of the imaging apparatus according to the third embodiment of the present invention as a target. It is. FIG. 18 is a diagram illustrating a situation where the target is located within the zoom frame. FIG. 19 is a flowchart illustrating an outline of processing executed by the imaging apparatus according to the fourth embodiment of the present invention. FIG. 20 is a diagram illustrating an example of an image displayed by the display unit of the imaging apparatus according to the fourth embodiment of the present invention. FIG. 21 is a screen transition diagram when the image displayed on the display unit of the imaging apparatus according to the fourth embodiment of the present invention is switched from the zoom frame to the electronic zoom frame.

  DESCRIPTION OF EMBODIMENTS Hereinafter, modes for carrying out the present invention (hereinafter referred to as “embodiments”) will be described with reference to the drawings. In addition, this invention is not limited by the following embodiment. In the description of the drawings, the same portions are denoted by the same reference numerals for description.

  FIG. 1 is a diagram illustrating a configuration of a side facing the subject (front side) of the imaging apparatus according to the first embodiment of the present invention. FIG. 2 is a diagram illustrating a configuration of a side facing the photographer (back side) of the imaging apparatus according to the first embodiment of the present invention. FIG. 3 is a block diagram illustrating a functional configuration of the imaging apparatus according to the first embodiment of the present invention.

  The imaging apparatus 1 shown in FIGS. 1 to 3 is detachable from the main body 2 and the main body 2, collects light from a predetermined field of view, and allows optical zooming, and the main body. 2 and an external device 4 that is detachable.

  First, the main body 2 will be described. The main body 2 includes a shutter 201, a shutter driving unit 202, an image sensor 203, an image sensor driving unit 204, a signal processing unit 205, an A / D conversion unit 206, an image processing unit 207, and an AE processing unit. 208, an AF processing unit 209, an image compression / decompression unit 210, an input unit 211, an accessory communication unit 212, an eyepiece display unit 213, an eye sensor 214, a movable unit 215, a display unit 216, and a touch panel 217. , Rotation determination unit 218, state detection unit 219, clock 220, recording medium 221, memory I / F 222, SDRAM (Synchronous Dynamic Random Access Memory) 223, flash memory 224, and main body communication unit 225 A bus 226 and a main body control unit 227.

  The shutter 201 sets the state of the image sensor 203 to an exposure state or a light shielding state. The shutter driving unit 202 is configured using a stepping motor, a DC motor, or the like, and drives the shutter 201 in accordance with an instruction signal input from the main body control unit 227.

  The image sensor 203 is configured using a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor) that receives the light collected by the lens unit 3 and converts it into an electrical signal, and generates image data of the subject. . The image sensor driving unit 204 outputs image data (analog signal) from the image sensor 203 to the signal processing unit 205 at a predetermined timing. In this sense, the image sensor driving unit 204 functions as an electronic shutter.

  The signal processing unit 205 performs analog processing on the image data input from the image sensor 203 and outputs the result to the A / D conversion unit 206. For example, the signal processing unit 205 increases the gain of the image data after reducing the reset noise and the like, shaping the waveform, and achieving the target brightness.

  The A / D conversion unit 206 generates digital image data (RAW data) by performing A / D conversion on the analog image data input from the signal processing unit 205, and sends the digital image data (RAW data) to the SDRAM 223 via the bus 226. Output.

  The image processing unit 207 acquires image data (RAW data) from the SDRAM 223 via the bus 226, performs various image processing on the acquired image data, and generates processed image data. Specifically, the image processing unit 207 performs basic image processing including optical black subtraction processing, white balance (WB) adjustment processing, color matrix calculation processing, gamma correction processing, color reproduction processing, and edge enhancement processing. Note that the image processing unit 207 performs image data synchronization processing when the image sensor 203 is a Bayer array. The image processing unit 207 outputs the processed image data to the SDRAM 223 or the display unit 216 via the bus 226.

  Here, a detailed configuration of the image processing unit 207 will be described. The image processing unit 207 includes a trimming unit 207a, a feature amount detection unit 207b, and a tracking subject setting unit 207c.

  The trimming unit 207a generates a trimmed image by cutting out a predetermined area of the image corresponding to the image data under the control of the main body control unit 227. In addition, in the trimming unit 207 a, the imaging element 203 generates a shooting region corresponding to a predetermined zoom magnification by the lens unit 3 in accordance with an instruction signal input from the input unit 211 or a position signal input from the touch panel 217. A trimmed image is generated by cutting out the image corresponding to the image data. For example, the trimming unit 207a generates a trimmed image by cutting out an area including a position signal input from the touch panel 217 from the image data as a shooting area corresponding to a predetermined zoom magnification by the lens unit 3. In this sense, the trimming unit 207a functions as an electronic zoom.

  The feature amount detection unit 207b detects the feature amount of the subject included in a predetermined area of the image corresponding to the image data under the control of the main body control unit 227. Specifically, the feature amount detection unit 207b detects a luminance component of a subject included in a predetermined region set by an instruction signal input from the input unit 211 or a position signal input from the touch panel 217 as a feature amount. .

  The tracking subject setting unit 207c sets a tracking subject to be tracked based on the feature amount detected by the feature amount detection unit 207b, and tracks the set tracking subject between adjacent images. The tracking subject setting unit 207c may track the tracking subject between adjacent images using a known technique such as pattern matching.

  The AE processing unit 208 acquires image data recorded in the SDRAM 223 via the bus 226, and sets an exposure condition when the imaging apparatus 1 performs still image shooting or moving image shooting based on the acquired image data. Specifically, the AE processing unit 208 calculates the luminance from the image data, and performs automatic exposure of the imaging device 1 by determining, for example, an aperture value, a shutter speed, ISO sensitivity, and the like based on the calculated luminance.

  The AF processing unit 209 acquires the image data recorded in the SDRAM 223 via the bus 226, and adjusts the automatic focus of the imaging apparatus 1 based on the acquired image data. For example, the AF processing unit 209 extracts a high-frequency component signal from the image data, performs AF (Auto Focus) calculation processing on the high-frequency component signal, and determines the focus evaluation of the imaging apparatus 1 to perform imaging. The automatic focus of the apparatus 1 is adjusted. Note that the AF processing unit 209 may adjust the automatic focus of the imaging apparatus 1 using the pupil division phase difference method.

  The image compression / decompression unit 210 acquires image data and processed image data from the SDRAM 223 via the bus 226, compresses the acquired image data according to a predetermined format, and compresses the compressed image data via the memory I / F 222. To the recording medium 221. Here, the predetermined format includes a JPEG (Joint Photographic Experts Group) system, a Motion JPEG system, and an MP4 (H.264) system. In addition, the image compression / decompression unit 210 acquires image data (compressed image data) recorded on the recording medium 221 via the bus 226 and the memory I / F 222, expands (decompresses) the acquired image data, and transfers it to the SDRAM 223. Output.

  The input unit 211 includes a power switch 211 a that switches the power state of the imaging device 1 to an on state or an off state, a release switch 211 b that receives an input of a still image release signal that gives a still image shooting instruction, and various settings of the imaging device 1 Recorded on the recording medium 221, a menu switch 211 d that displays various settings of the imaging device 1 on the display unit 216, a moving image switch 211 e that receives an input of a moving image release signal that gives a moving image shooting instruction, and the like. A reproduction switch 211f for causing the display unit 216 to display an image corresponding to the image data. The release switch 211b can be moved back and forth by an external press. When the release switch 211b is pressed halfway, it accepts an input of a first release signal as an instruction signal for instructing a shooting preparation operation. The second release signal input is accepted.

  The accessory communication unit 212 is a communication interface for performing communication with the external device 4 attached to the main body unit 2.

  The eyepiece display unit 213 is configured using a display panel made of liquid crystal or organic EL (Electro Luminescence), a drive driver, and the like. The eyepiece display unit 213 displays an image corresponding to the image data recorded in the SDRAM 223 via the bus 226 under the control of the main body control unit 227. In this sense, the eyepiece display unit 213 functions as an electronic viewfinder (EVF).

  The eye sensor 214 is configured using a contact sensor or the like. The eye sensor 214 detects the user's approach to the eyepiece display unit 213 and outputs the detection result to the main body control unit 227. Specifically, the eye sensor 214 detects whether or not the user confirms an image on the eyepiece display unit 213.

  The movable portion 215 is provided with a display portion 216 and a touch panel 217, and is provided in the main body portion 2 so as to be movable via a hinge 215a. For example, the movable unit 215 is provided in the main body unit 2 so that the display unit 216 can be changed upward or downward with respect to the vertical direction of the main body unit 2 (see FIG. 2).

  The display unit 216 is configured using a display panel made of liquid crystal or organic EL, a drive driver, and the like. The display unit 216 acquires image data recorded on the SDRAM 223 or image data recorded on the recording medium 221 via the bus 226 under the control of the main body control unit 227, and displays an image corresponding to the acquired image data. indicate. Here, for image display, a rec view display that displays image data immediately after shooting for a predetermined time (for example, 3 seconds), a playback display that plays back image data recorded on the recording medium 221, and an image sensor 203 are continuously displayed. Live view display that sequentially displays live view images corresponding to image data to be generated in time series. In addition, the display unit 216 appropriately displays operation information of the imaging device 1 and information related to shooting.

  The touch panel 217 is provided so as to be superimposed on the display screen of the display unit 216. The touch panel 217 detects a touch of an object from the outside, and outputs a position signal corresponding to the detected touch position to the main body control unit 227. The touch panel 217 detects a position touched based on information displayed on the display unit 216 by the user, for example, an icon image or a thumbnail image, and instructs an operation to be performed by the imaging apparatus 1 according to the detected touch position. An instruction signal or a selection signal for selecting an image may be received. In general, the touch panel 217 includes a resistance film method, a capacitance method, an optical method, and the like. In the first embodiment, any type of touch panel is applicable. Furthermore, the movable part 215, the display part 216, and the touch panel 217 may be integrally formed.

  The rotation determination unit 218 determines the rotation state of the movable unit 215 and outputs the detection result to the main body control unit 227. For example, the rotation determination unit 218 determines whether or not the movable unit 215 is movable with respect to the main body unit 2, and outputs the determination result to the main body control unit 227.

  The state detection unit 219 is configured by using an acceleration sensor and a gyro sensor, detects acceleration and angular velocity generated in the imaging apparatus 1, and outputs the detection result to the main body control unit 227.

  The clock 220 has a clocking function and a shooting date / time determination function. The clock 220 outputs the date / time data to the main body control unit 227 in order to add the date / time data to the image data captured by the image sensor 203.

  The recording medium 221 is configured using a memory card or the like mounted from the outside of the imaging device 1. The recording medium 221 is detachably attached to the imaging device 1 via the memory I / F 222. In the recording medium 221, image data processed by the image processing unit 207 and the image compression / decompression unit 210 is written. Also, the image data recorded by the main body control unit 227 is read from the recording medium 221.

  The SDRAM 223 is configured using a volatile memory. The SDRAM 223 temporarily records the image data input from the A / D conversion unit 206 via the bus 226, the image data input from the image processing unit 207, and information being processed by the imaging apparatus 1. For example, the SDRAM 223 temporarily records image data that the image sensor 203 sequentially outputs for each frame via the signal processing unit 205, the A / D conversion unit 206, and the bus 226.

  The flash memory 224 is configured using a nonvolatile memory. The flash memory 224 includes a program recording unit 224a. The program recording unit 224a records various programs for operating the imaging apparatus 1, various data used during execution of the programs, parameters of each image processing necessary for the image processing operation by the image processing unit 207, and the like.

  The main body communication unit 225 is a communication interface for performing communication with the lens unit 3 attached to the main body unit 2.

  The bus 226 is configured using a transmission path or the like that connects each component of the imaging device 1. The bus 226 transfers various data generated inside the imaging apparatus 1 to each component of the imaging apparatus 1.

  The main body control unit 227 is configured using a CPU (Central Processing Unit) or the like. The main body control unit 227 comprehensively controls the operation of the imaging device 1 by performing instructions, data transfer, and the like corresponding to each unit constituting the imaging device 1 in accordance with an instruction signal from the input unit 211 or a position signal from the touch panel 217. To control.

  A detailed configuration of the main body control unit 227 will be described. The main body control unit 227 includes a touch detection unit 227a, a shooting control unit 227b, and a display control unit 227c.

  The touch detection unit 227a detects a touch position on the touch panel 217 in accordance with a position signal input from the touch panel 217.

  When the second release signal is input from the release switch 211b, the shooting control unit 227b performs control to start the shooting operation in the imaging device 1. Here, the imaging operation in the imaging apparatus 1 refers to the signal processing unit 205, the A / D conversion unit 206, and the image processing for the image data output from the imaging device 203 by driving the shutter driving unit 202 and the imaging device driving unit 204. An operation in which the unit 207 performs a predetermined process. The image data thus processed is compressed by the image compression / decompression unit 210 under the control of the imaging control unit 227b, and is recorded on the recording medium 221 via the bus 226 and the memory I / F 222. Further, when a position signal is input from the touch panel 217, the shooting control unit 227b controls the optical zoom of the lens unit 3 according to the zoom magnification corresponding to the trimmed image generated by the trimming unit 207a. Specifically, the imaging control unit 227b controls the lens unit 3 via the main body communication unit 225 to drive the optical zoom of the lens unit 3 so that the zoom magnification of the trimmed image generated by the trimming unit 207a is obtained. .

  The display control unit 227c causes the display unit 216 and / or the eyepiece display unit 213 to display an image corresponding to the image data. Specifically, when the eyepiece display unit 213 is powered on, the display control unit 227c displays a live view image corresponding to the image data on the eyepiece display unit 213, while the eyepiece display unit 213 is powered off. In the state, the live view image corresponding to the image data is displayed on the display unit 216. Further, the display control unit 227c superimposes the zoom information related to the imaging region corresponding to the predetermined zoom magnification by the lens unit 3 and the trimming image generated by the trimming unit 207a on the live view image and / or the eyepiece display unit 213. This is displayed on the part 216. Here, the imaging region is an angle of view (viewing region) determined by the focal length of the lens unit 3 and the sensor size of the image sensor 203. Note that the display control unit 227c may superimpose an index related to the optical axis O of the lens unit 3 on the live view image and display it on the display unit 216.

  The main body unit 2 having the above configuration may be provided with a voice input / output function, a flash function, a communication function capable of bidirectional communication with the outside, and the like.

  Next, the lens unit 3 will be described. The lens unit 3 includes a zoom lens 301, a zoom drive unit 302, a zoom position detection unit 303, a diaphragm 304, a diaphragm drive unit 305, an aperture value detection unit 306, a focus lens 307, and a focus drive unit 308. A focus position detection unit 309, a lens operation unit 310, a lens flash memory 311, a lens communication unit 312, and a lens control unit 313.

  The zoom lens 301 is configured using one or a plurality of lenses. The zoom lens 301 changes the magnification of the optical zoom of the imaging device 1 by moving along the optical axis O of the lens unit 3. For example, the zoom lens 301 can change the focal length between 12 mm and 50 mm.

  The zoom driving unit 302 is configured by using a DC motor, a stepping motor, or the like, and moves the zoom lens 301 along the optical axis O under the control of the lens control unit 313, so that the optical zoom of the imaging device 1 is performed. Make changes.

  The zoom position detection unit 303 is configured using a photo interrupter or the like, detects the position of the zoom lens 301 on the optical axis O, and outputs the detection result to the lens control unit 313.

  The diaphragm 304 adjusts exposure by limiting the amount of incident light collected by the zoom lens 301.

  The aperture driving unit 305 is configured by using a stepping motor or the like, and changes the aperture value (F value) of the imaging apparatus 1 by driving the aperture 304 under the control of the lens control unit 313.

  The aperture value detection unit 306 is configured using a photo interrupter, an encoder, or the like, detects the aperture value from the current state of the aperture 304, and outputs the detection result to the lens control unit 313.

  The focus lens 307 is configured using one or a plurality of lenses. The focus lens 307 changes the focus position of the imaging apparatus 1 by moving along the optical axis O of the lens unit 3.

  The focus driving unit 308 is configured using a DC motor, a stepping motor, or the like, and moves the focus lens 307 along the optical axis O under the control of the lens control unit 313, thereby adjusting the focus position of the imaging device 1. adjust.

  The focus position detection unit 309 is configured using a photo interrupter or the like, detects the position of the focus lens 307 on the optical axis O, and outputs the detection result to the lens control unit 313.

  As shown in FIG. 1, the lens operation unit 310 is a ring provided around the lens barrel of the lens unit 3. The lens operation unit 310 receives an instruction signal for instructing a change in the optical zoom in the lens unit 3 or focuses on the lens unit 3. An instruction signal for instructing position adjustment is received. The lens operation unit 310 may be a push type switch, a lever type switch, or the like.

  The lens flash memory 311 records a control program for determining the positions and movements of the zoom lens 301, the diaphragm 304, and the focus lens 307, the lens characteristics of the lens unit 3, and various parameters. Here, the lens characteristics are chromatic aberration, field angle information, brightness information (f value), and focal length information (for example, 50 mm to 300 mm) of the lens unit 3.

  The lens communication unit 312 is a communication interface for communicating with the main body communication unit 225 of the main body unit 2 when the lens unit 3 is attached to the main body unit 2.

  The lens control unit 313 is configured using a CPU or the like. The lens control unit 313 controls the operation of the lens unit 3 in accordance with an instruction signal from the lens operation unit 310 or an instruction signal from the main body unit 2. Specifically, the lens control unit 313 drives the focus driving unit 308 in accordance with an instruction signal from the lens operation unit 310 to drive the focus adjustment by the focus lens 307 and the zoom driving unit 302 to drive the zoom lens 301. Change the zoom magnification of the optical zoom. The lens control unit 313 may transmit the lens characteristics of the lens unit 3 and identification information for identifying the lens unit 3 to the main body unit 2 when the lens unit 3 is attached to the main body unit 2.

  Next, the external device 4 will be described. The external device 4 is detachable from the main body 2. The external device 4 is, for example, a flash device, a recording device capable of voice input / output, or a communication device that connects to an external network according to a predetermined method and transfers image data recorded on the recording medium 221 to the outside. The external device 4 includes a communication unit 401. The communication unit 401 is a communication interface for communicating with the accessory communication unit 212 of the main body 2 when the external device 4 is attached to the main body 2.

  Processing executed by the imaging apparatus 1 having the above configuration will be described. FIG. 4 is a flowchart illustrating an outline of processing executed by the imaging apparatus 1.

  First, the case where the imaging device 1 is set to the shooting mode (step S101: Yes) will be described. In this case, when the lens unit 3 is replaced with another lens unit 3 (step S102: Yes), the main body control unit 227 performs lens communication with the replaced lens unit 3, and the lens characteristics from the lens unit 3 are obtained. Is acquired (step S103). Thereafter, the imaging apparatus 1 proceeds to step S104. On the other hand, when the lens unit 3 has not been replaced with another lens unit 3 (step S102: No), the imaging device 1 proceeds to step S104.

  Subsequently, the display control unit 227c displays a live view image corresponding to the image data generated by the image sensor 203, a zoom frame indicating a candidate for an area to be enlarged in the live view image, and a trimming unit 207a from the image data to the zoom frame. The sub-image obtained by cutting out the corresponding area is displayed on the display unit 216 or the eyepiece display unit 213 (step S104). For example, as illustrated in FIG. 5, when the user captures a celestial object using the imaging apparatus 1, the display control unit 227 c displays an area to be enlarged on the live view image W1 displayed on the display unit 216 or the eyepiece display unit 213. The zoom frame K1 and the trimming unit 207a that are shown cut out the region corresponding to the zoom frame K1 from the image data and display the superimposed sub-image K2. In FIG. 5, the zoom frame K <b> 1 indicates a shooting area corresponding to a predetermined zoom magnification of the lens unit 3, for example, a zoom magnification of 2 ×, as an initial state. Further, the display position and size of the sub-image K2 can be changed as appropriate.

  Thereafter, the touch detection unit 227a detects whether or not a touch is made on the screen of the live view image displayed on the display unit 216 (step S105). Specifically, as illustrated in FIG. 6, the touch detection unit 227 a has received a position signal from the touch panel 217 by being touched on the screen in the live view image W1 displayed on the display unit 216 by the user. Detect whether or not. When the touch detection unit 227a detects a touch within the screen of the live view image W1 displayed by the display unit 216 (step S105: Yes), the imaging device 1 proceeds to step S122 described later. On the other hand, when the touch detection unit 227a does not detect a touch within the screen of the live view image W1 displayed by the display unit 216 via the touch panel 217 (step S105: No), the imaging device 1 is described later. The process proceeds to step S106.

  In step S106, the touch detection unit 227a detects whether a pinch operation has been performed on the zoom frame K1. Specifically, as illustrated in FIG. 7, the touch detection unit 227a has two positions indicating different touch positions from the touch panel 217 when the user touches two different places in the region including the boundary of the zoom frame K1. It is detected whether or not a signal is input. In FIG. 7, the touch detection unit 227a determines the pinch operation by touching two places. However, even when the touch detection unit 227a is touched on the zoom frame K1, for example, the pinch operation is performed. You may detect that it was done. When the touch detection unit 227a detects a pinch operation with respect to the zoom frame K1 (step S106: Yes), the imaging device 1 proceeds to step S107 described later. On the other hand, when the touch detection unit 227a has not detected a pinch operation with respect to the zoom frame K1 (step S106: No), the imaging device 1 proceeds to step S110 described later.

  In step S107, when the optical zoom by the lens unit 3 is the limit (step S107: Yes), the display control unit 227c has the optical zoom by the lens unit 3 on the live view image W1 displayed by the display unit 216. A warning indicating this is displayed (step S108). For example, the display control unit 227c causes the display unit 216 to display a warning indicating that the optical zoom by the lens unit 3 is the limit by displaying the zoom frame K1 in a highlighted display. Note that the display control unit 227c may display a warning indicating that the optical zoom by the lens unit 3 is the limit on the display unit 216 with an icon image or a character. After step S108, the imaging apparatus 1 proceeds to step S110.

  In step S107, when the optical zoom by the lens unit 3 is not the limit (step S107: No), the display control unit 227c responds to the two position signals input from the touch panel 217, and the zoom frame K1 on the live view image W1. Is enlarged or reduced (step S109). Specifically, the display control unit 227c enlarges the display area of the zoom frame K1 when two touch positions indicating two different position names are separated with time (when a pinch-out operation is performed). On the other hand, when two touch positions indicating two different position signals approach as time passes (when a pinch-in operation is performed), the display area of the zoom frame K1 is reduced. After step S109, the imaging apparatus 1 proceeds to step S110.

  Subsequently, the touch detection unit 227a detects whether or not a slide operation has been performed on the zoom frame K1 (step S110). Specifically, the touch detection unit 227a moves the touch position while the user touches within the area including the boundary of the zoom frame K1, so that the position signal indicating the touch position changes from the touch panel 217 with time. Detect whether or not. When the touch detection unit 227a detects a slide operation with respect to the zoom frame K1 (step S110: Yes), the display control unit 227c moves the zoom frame K1 on the live view image W1 in accordance with the slide operation to display the display unit. It is displayed on 216 (step S111). After step S111, the imaging apparatus 1 proceeds to step S112. On the other hand, when the touch detection unit 227a has not detected the slide operation with respect to the zoom frame K1 (step S110: No), the imaging device 1 proceeds to step S112.

Thereafter, when there is a tap operation on the sub-image K2 (step S112: Yes), when the zoom frame K1 is at a position including the center of the screen on the live view image W1 (step S113: Yes), shooting control is performed. The unit 227b changes the optical zoom of the lens unit 3 to a size corresponding to the zoom frame K1, and changes the zoom magnification of the optical zoom of the lens unit 3 (step S114). Specifically, as shown in FIG. 8, when the user performs a tap operation on the sub-image K2 via the touch panel 217, the zoom frame K1 is the center position of the screen on the live view image W1, When the lens unit 3 is in a position partially including the optical axis O (FIG. 8A), the imaging control unit 227b controls the lens control unit 313 via the main body communication unit 225 and the lens communication unit 312. By moving the zoom lens 301 along the optical axis O direction by driving the zoom driving unit 302, the zoom magnification of the optical zoom of the lens unit 3 is gradually increased to a size corresponding to the zoom magnification of the zoom frame K1. Change (FIG. 8 (a) → FIG. 8 (b)). Thereby, the imaging device 1 can enlarge or reduce the area desired by the user while changing the zoom magnification of the optical zoom. Note that when the input of the position signal from the touch panel 217 is stopped while the imaging apparatus 1 is performing optical zoom, the imaging control unit 227b may stop driving the zoom lens 301 at the current zoom magnification position. Good. When the lens unit 3 performs optical zoom, the shooting control unit 227b displays the trimmed image on the trimming unit 207a until the lens unit 3 reaches a zoom magnification corresponding to the zoom magnification of the zoom frame K1. The display control unit 227c may cause the display unit 216 to display the trimmed image generated by the trimming unit 207a. Thereby, the period until the optical zoom by the lens unit 3 reaches can be virtually displayed at a zoom magnification corresponding to the zoom magnification of the zoom frame K1, and the area desired by the user is instantaneously enlarged or reduced. be able to.

  Subsequently, when the release switch 211b is fully pressed and a second release signal is input and a shooting operation is performed (step S115: Yes), the shooting control unit 227b performs still image shooting on the image sensor 203. In step S116, the image data generated by the image sensor 203 is recorded on the recording medium 221 (step S117). At this time, the display control unit 227c may display the image corresponding to the image data on the display unit 216 for a predetermined time (for example, 3 seconds). On the other hand, when the photographing operation is not performed via the release switch 211b (step S115: No), the imaging device 1 proceeds to step S118.

  Thereafter, when the power supply of the imaging device 1 is turned off by operating the power switch 211a (step S118: Yes), the imaging device 1 ends this process. On the other hand, when the power of the imaging device 1 is not turned off via the power switch 211a (step S118: No), the imaging device 1 returns to step S101.

  In step S112, when the tap operation is performed on the sub image K2 (step S112: Yes), when the zoom frame K1 is not at the center of the screen of the live view image W1 (step S113: No), the shooting control unit 227b. The electronic zoom is performed to a size corresponding to the zoom magnification of the zoom frame K1 by causing the trimming unit 207a to generate a trimming image having a size corresponding to the zoom magnification of the zoom frame K1 (step S119). For example, as shown in FIG. 9, when the user performs a tap operation on the sub image K3 via the touch panel 217, the zoom frame K1 is not at the center of the screen on the live view image W1 (FIG. 9A). ), The shooting control unit 227b causes the trimming unit 207a to generate a trimming image having a size corresponding to the zoom magnification of the zoom frame K1, and the display control unit 227c generates all the trimming image W2 generated by the trimming unit 207a on the display unit 216. The screen is displayed (FIG. 9 (a) → FIG. 9 (b)). Thereby, even if the optical zoom by the lens part 3 cannot be performed, the imaging device 1 can enlarge or reduce the region desired by the user by the electronic zoom. After step S119, the imaging apparatus 1 proceeds to step S115.

  In step S112, when there is no tap operation of the zoom frame K1 via the touch panel 217 (step S112: No) and the half-press operation of the release switch 211b is performed (step S120: Yes), the imaging apparatus 1 performs step S113. Migrate to On the other hand, when there is no tap operation of the zoom frame K1 via the touch panel 217 (step S112: No) and the half-press operation of the release switch 211b is not performed (step S120: No), the imaging device 1 The process proceeds to step S121.

  In step S121, the main body control unit 227 determines whether or not the tracking subject is located at the center of the screen on the live view image W1 displayed by the display unit 216. Specifically, the main body control unit 227 determines whether or not the tracking subject set by the tracking subject setting unit 207c is located in the center region of the screen on the live view image W1 and in the region within the zoom frame K1. Determine whether. When the tracking subject is located at the center of the screen on the live view image W1 displayed by the display unit 216 (step S121: Yes), the imaging device 1 proceeds to step S113. On the other hand, when the tracking subject is not located at the center of the screen on the live view image W1 displayed by the display unit 216 (step S121: No), the imaging device 1 proceeds to step S115.

  In step S122, the imaging control unit 227b adjusts the focus of the lens unit 3 to an area corresponding to the touch position. Specifically, the imaging control unit 227b controls the lens control unit 313 via the main body communication unit 225 and the lens communication unit 312 and drives the focus drive unit 308, thereby moving the focus lens 307 in the optical axis O direction. By moving it along, the focus of the lens unit 3 is adjusted to the area corresponding to the touch position. After step S122, the imaging device 1 proceeds to step S116.

  In step S101, the case where the imaging device 1 is not set to the shooting mode (step S101: No) and the imaging device 1 is set to the reproduction mode (step S123: Yes) will be described. In this case, the display control unit 227c causes the display unit 216 to display and reproduce the image data recorded on the recording medium 221 (step S124).

  Subsequently, when there is a change operation for changing the image (step S125: Yes), the display control unit 227c changes the image (step S126). Thereafter, the imaging apparatus 1 returns to step S124. On the other hand, when there is no change operation which changes an image (step S125: No), the imaging device 1 transfers to step S118.

  In step S123, when the imaging device 1 is not set to the reproduction mode (step S123: No), the imaging device 1 proceeds to step S118.

  According to the first embodiment described above, the trimming unit 207a cuts out an imaging region corresponding to a predetermined zoom magnification by the lens unit 3 from the image data generated by the image sensor 203, generates a trimmed image, and performs imaging. The control unit 227b controls the optical zoom of the lens unit 3 according to the zoom magnification corresponding to the trimmed image generated by the trimming unit 207a. Thereby, an area desired by the user can be enlarged and displayed by an intuitive operation without reducing the resolution of the image.

  Furthermore, according to the first embodiment, the display control unit 227c superimposes the trimming image generated by the zoom frame K1 and the trimming unit 207a as the sub-image on the live view image W1 as information on the zoom region by the lens unit 3. It is displayed on the display unit 216. Thereby, the user can change to a desired zoom magnification while confirming an image having a desired zoom magnification.

  Further, according to the first embodiment, since the position or size of the zoom frame can be changed via the touch panel 217, the optical zoom of the lens unit 3 can be performed by an intuitive operation.

  Furthermore, according to the first embodiment, when the sub image K2 is touched via the touch panel 217 or when an instruction signal instructing optical zoom by the lens unit 3 is input from the input unit 211, the imaging control unit 227b causes the lens unit 3 to execute optical zoom up to a size corresponding to the zoom magnification of the zoom frame K1. Thereby, the user can perform desired optical zoom by intuitive operation.

  Further, according to the first embodiment, when there is no zoom frame on the optical axis O of the lens unit 3, the display control unit 227c causes the display unit 216 to display the trimming image K3 generated by the trimming unit 207a on the full screen. . Thereby, even if the optical zoom by the lens unit 3 cannot be performed, the image can be displayed at a zoom magnification virtually desired by the user by the electronic zoom.

  Further, according to the first embodiment, when the zoom frame K1 is larger than the photographing area by the optical zoom of the lens unit 3, the display control unit 227c displays the trimmed image generated by the trimming unit 207a on the display unit 216 on the full screen. Display. Thereby, even if optical zooming by the lens unit 3 cannot be performed, an image can be displayed on the display unit 216 virtually at a zoom magnification desired by the user by electronic zoom.

(Embodiment 2)
Next, a second embodiment of the present invention will be described. The imaging apparatus according to the second embodiment has the same configuration as the imaging apparatus according to the first embodiment described above. Therefore, in the following, processing executed by the imaging apparatus according to the second embodiment will be described. In addition, the same code | symbol is attached | subjected and demonstrated to the structure same as Embodiment 1 mentioned above.

  FIG. 10 is a flowchart illustrating an outline of processing executed by the imaging apparatus 1 according to the second embodiment.

  First, the case where the imaging device 1 is set to the shooting mode (step S201: Yes) will be described. In this case, the main body control unit 227 performs lens communication with the lens control unit 313 via the main body communication unit 225 and the lens communication unit 312 (step S202). At this time, the main body control unit 227 acquires lens characteristics from the lens unit 3.

  Subsequently, the imaging control unit 227b drives the imaging element driving unit 204 to cause the imaging element 203 to perform imaging (step S203).

  Thereafter, the display control unit 227c causes the display unit 216 to display a live view image corresponding to the image data generated by the image sensor 203 (step S204).

  Subsequently, when there is a zoom frame display on the live view image displayed by the display unit 216 (step S205: Yes), the imaging device 1 proceeds to step S210 to be described later. On the other hand, when there is no zoom frame display on the live view image displayed by the display unit 216 (step S205: No), the imaging apparatus 1 proceeds to step S206 described later.

  In step S206, the touch detection unit 227a detects whether or not the touch panel 217 is touched. When the touch detection unit 227a detects a touch on the touch panel 217 (step S206: Yes), the imaging device 1 proceeds to step S207 described later. On the other hand, when the touch detection unit 227a detects a touch on the touch panel 217 (step S206: No), the imaging device 1 proceeds to step S210 described later.

  In step S207, the display control unit 227c acquires the coordinates of the touch position (step S207), displays a zoom frame on the live view image on the display unit 216 (step S208), and displays the sub image on the live view image. The information is superimposed and displayed on the display unit 216 (step S209). Specifically, as illustrated in FIG. 11, when touched on the live view image W10 displayed on the display unit 216 via the touch panel 217, the display control unit 227c includes diagonal positions of the two touch positions. The zoom frame K10 is displayed for the area, and the sub image K11 generated by the trimming unit 207a cutting out the area of the zoom frame K10 from the image data is displayed superimposed on the right part on the live view image W10. Thereby, the user can grasp the shooting area after zooming and the image after zooming. After step S209, the imaging apparatus 1 proceeds to step S210.

  Here, a method of calculating the display area when the display control unit 227c displays the zoom frame K10 superimposed on the live view image W10 will be described. FIG. 12 is a diagram illustrating an outline of a display area calculation method when the display control unit 227c displays the zoom frame K10 in a superimposed manner on the live view image W10. In FIG. 12, a coordinate system is considered in which the lower left of the display unit 216 is the origin, the horizontal direction of the display unit 216 is the X axis, and the vertical direction of the display unit 216 is the Y axis.

As shown in FIG. 12, the size of the display unit 216 in the X-axis direction is X (f), the size of the zoom frame in the X-axis direction is X (fmax), the current focal length of the lens unit 3 is F, and the lens When the maximum focal length of the unit 3 is Fmax, the display range in the X-axis direction of the zoom frame is calculated by the following equation (1).
X (fmax) = (X (f) × F) / Fmax (1)
The size of the display unit 216 in the Y-axis direction is Y (f), the size of the zoom frame in the Y-axis direction is Y (fmax), the current focal length of the lens unit 3 is F, and the maximum focus of the lens unit 3 is When the distance is Fmax, the display range in the X-axis direction of the zoom frame is calculated by the following equation (2).
Y (fmax) = (Y (f) × F) / Fmax (2)
In this way, the display control unit 227c calculates the sizes X (fmax) and Y (fmax) of the display area of the zoom frame K10 on the live view image W10 using the expressions (1) and (2). .

  Returning to FIG. 10, the description from step S210 is continued. In step S210, the touch detection unit 227a detects whether or not a slide operation has been performed on the zoom frame K10. When the touch detection unit 227a detects a slide operation on the zoom frame K10 (step S210: Yes), the imaging device 1 proceeds to step S211 described later. On the other hand, when the touch detection unit 227a has not detected a slide operation on the zoom frame K10 (step S210: No), the imaging device 1 proceeds to step S214 described later.

  In step S211, the display control unit 227c acquires the slide coordinates indicating the position where the user's finger is separated from the touch panel 217 from the start position where the slide operation is performed (step S211), and the live view image. A zoom frame K10 corresponding to the slide coordinates is displayed on the display unit 216 on W10 (step S212), and the sub-image K11 is superimposed on the live view image W10 and displayed on the display unit 216 (step S213). For example, as illustrated in FIG. 13, when a slide operation for enlarging the zoom magnification is performed on the zoom frame K10, the display control unit 227c reduces and displays the display area of the zoom frame K10 according to the slide operation. The sub image K11 generated by the trimming unit 207a cutting out the region of the zoom frame K10 from the image data is superimposed on the live view image W10 and displayed on the display unit 216. Thereby, the user can grasp the shooting area after zooming and the image after zooming. After step S213, the imaging apparatus 1 proceeds to step S214.

  Returning to FIG. 10, the description from step S214 is continued. In step S214, when the release switch 211b is pressed halfway (step S214: Yes), when the zoom frame K10 is displayed on the live view image W10 displayed on the display unit 216 (step S215: Yes), the display control unit 227c deletes the sub-image K11 from the live view image W10 (step S216).

  Subsequently, the imaging control unit 227b causes the lens unit 3 to perform optical zoom up to a size corresponding to the zoom frame K1 (step S217). Specifically, the imaging control unit 227b converts the focal length of the lens unit 3 corresponding to the display area of the zoom frame K10 on the live view image W10, and drives the lens unit 3 so that the converted focal length is obtained. To do.

  Here, a calculation method in which the shooting control unit 227b converts to a focal length corresponding to the display area of the zoom frame K10 will be described. FIG. 14 is a diagram illustrating an outline of a conversion method in which the imaging control unit 227b converts to a focal length corresponding to the display area of the zoom frame K10. In FIG. 14, the lower left of the display unit 216 is the origin, and the horizontal direction of the display unit 216 is the X axis.

As shown in FIG. 14, the size of the display unit 216 in the X-axis direction is X (f), the size of the zoom frame K10 after the slide operation is X (fmin), and the current focus of the lens unit 3 When the distance is F, the focal length Fmin of the lens unit 3 after the slide operation is calculated by the following equation (3).
Fmin = (X (f) × F) / X (fmin) (3)
As described above, the imaging control unit 227b converts the focal length Fmin of the lens unit 3 corresponding to the display area of the zoom frame K10 on the live view image W10 using the equation (3). Thereby, as shown in FIG. 15, the imaging control unit 227b controls the lens control unit 313 via the main body communication unit 225 and the lens communication unit 312, and the focal point of the lens unit 3 calculated using Expression (3). By driving the zoom driving unit 302 based on the distance Fmin, the zoom lens 301 is moved along the optical axis O, and the zoom magnification of the optical zoom corresponding to the zoom frame K10 is changed.

  If the zoom frame K10 is not displayed after step S217 or on the live view image W10 displayed by the display unit 216 (step S215: No), the imaging device 1 proceeds to step S218.

  Subsequently, the imaging control unit 227b causes the AE processing unit 208 to perform AE processing and causes the AF processing unit 209 to perform AF processing (step S218). After step S218 or when the release switch 211b is not half-pressed (step S214: No), the imaging apparatus 1 proceeds to step S219.

  Thereafter, when a shooting operation is performed by fully pressing the release switch 211b (step S219: Yes), the shooting control unit 227b causes the image sensor 203 to perform still image shooting (step S220).

  Subsequently, the imaging control unit 227b records the image data generated by the image sensor 203 on the recording medium 221 (step S221).

  Thereafter, when the power supply of the imaging apparatus 1 is turned off by operating the power switch 211a (step S222: Yes), the imaging apparatus 1 ends this process. On the other hand, when the power of the imaging device 1 is not turned off by operating the power switch 211a (step S222: No), the imaging device 1 returns to step S201.

  In step S219, when the shooting operation of the release switch 211b is not performed (step S219: No), the imaging device 1 proceeds to step S222.

  In step S201, the case where the imaging device 1 is not set to the shooting mode (step S201: No) will be described. In this case, the imaging apparatus 1 performs an image reproduction process in which an image corresponding to the image data recorded on the recording medium 221 is displayed on the display unit 216 and reproduced (step S223). Thereafter, the imaging apparatus 1 proceeds to step S222.

  According to the second embodiment described above, the trimming unit 207a cuts out an imaging region corresponding to a predetermined zoom magnification by the lens unit 3 from the image data generated by the image sensor 203, generates a trimmed image, and performs imaging. The control unit 227b controls the optical zoom of the lens unit 3 according to the zoom magnification of the trimmed image generated by the trimming unit 207a. Thereby, the user can enlarge and display a desired region by an intuitive operation without reducing the resolution of the image.

(Embodiment 3)
Next, a third embodiment of the present invention will be described. The imaging apparatus according to the third embodiment has the same configuration as the imaging apparatus according to the first embodiment described above. Therefore, in the following, processing executed by the imaging apparatus according to the third embodiment will be described. In addition, the same code | symbol is attached | subjected and demonstrated to the structure same as Embodiment 1 mentioned above.

  FIG. 16 is a flowchart illustrating an outline of processing executed by the imaging apparatus 1 according to the third embodiment.

  In FIG. 16, Steps S301 to S309 correspond to Steps S201 to S209 of FIG. 10 described above, respectively.

  In step S310, the tracking subject setting unit 207c starts tracking the target subject between adjacent images based on the feature amount detected by the feature amount detection unit 207b with respect to the region including the touch position. Specifically, as shown in FIG. 17, the tracking subject setting unit 207 c detects the target between adjacent images based on the feature amount detected by the feature amount detection unit 207 b with respect to the target T1 specified by the touch. Tracking of the subject to be started. After step S310, the imaging device 1 proceeds to step S311.

  Steps S311 to S314 correspond to steps S210 to S213 in FIG. 10, respectively.

  In step S315, the main body control unit 227 determines whether or not the target T1 is positioned within the zoom frame K20 of the lens unit 3. Specifically, as shown in FIG. 18, it is determined whether or not the target T1 is located within the zoom frame K20. When the main body control unit 227 determines that the target T1 is not located within the zoom frame K20 (step S315: Yes), the imaging device 1 proceeds to step S316. On the other hand, when the main body control unit 227 determines that the target T1 is located in the zoom frame K20 (step S315: No), the imaging device 1 proceeds to step S320.

  In step S316, the display control unit 227c deletes the sub image K21 from the live view image W20 displayed by the display unit 216.

  Subsequently, the imaging control unit 227b performs optical zoom of the lens unit 3 to a size corresponding to the current target T1 (step S317).

  Thereafter, when the target T1 is out of the zoom frame K20 (step S318: Yes), the imaging control unit 227b stops the optical zoom by the lens unit 3 (step S319). After step S319, the imaging device 1 proceeds to step S320. On the other hand, when the target T1 is not out of the zoom frame K20 (step S318: No), the imaging device 1 proceeds to step S320.

  Subsequently, when the half-press operation of the release switch 211b is performed (step S320: Yes), the imaging control unit 227b causes the AE processing unit 208 to execute the AE process and causes the AF processing unit 209 to execute the AF process. (Step S321). After step S321 or when the half-press operation of the release switch 211b is not performed (step S320: No), the imaging apparatus 1 proceeds to step S322.

  Steps S322 to S326 correspond to steps S219 to S223 of FIG. 10, respectively.

  According to the third embodiment described above, when the shooting control unit 227b wants to match the target T1 of the tracking subject and the zoom frame K20, the lens unit 3 is driven to an optical zoom corresponding to the size of the zoom frame K20. . As a result, the user can perform shooting at a desired zoom magnification only by operating the shooting direction of the imaging apparatus 1 and aligning the zoom frame K20 with the target T1 of the tracking subject.

  Further, according to the third embodiment, the imaging control unit 227b stops the optical zoom of the lens unit 3 when the tracking subject target T1 deviates from the zoom frame K20. As a result, it is possible to prevent a subject that the user does not desire from being enlarged.

(Embodiment 4)
Next, a fourth embodiment of the present invention will be described. The fourth embodiment has the same configuration as the imaging device according to the first embodiment described above, and only the processing executed by the imaging device is different. Therefore, in the following, only processing executed by the imaging apparatus according to the fourth embodiment will be described. In addition, the same code | symbol is attached | subjected and demonstrated to the structure same as Embodiment 1 mentioned above.

  FIG. 19 is a flowchart illustrating an outline of processing executed by the imaging apparatus 1 according to the fourth embodiment.

  Steps S401 to S411 correspond to steps S201 to S211 in FIG. 10, respectively.

  In step S <b> 412, the main body control unit 227 determines whether the coordinates of the slide position are within the optical zoom area by the lens unit 3. When the main body control unit 227 determines that the coordinates of the slide position are within the optical zoom area by the lens unit 3 (step S412: Yes), the imaging device 1 proceeds to step S413 described later. On the other hand, when the main body control unit 227 determines that the coordinates of the slide position are not within the optical zoom area by the lens unit 3 (step S412: No), the imaging apparatus 1 proceeds to step S417 described later.

  In step S413, if the optical zoom by the lens unit 3 is the limit (step S413: Yes), the display control unit 227c displays the minimum electronic value corresponding to the limit value of the optical zoom on the live view image displayed by the display unit 216. The zoom frame is superimposed and displayed (step S414). On the other hand, when the optical zoom by the lens unit 3 is not the limit (step S413: No), the display control unit 227c displays the optical zoom frame by the optical zoom superimposed on the live view image displayed by the display unit 216. (Step S415).

  Subsequently, the display control unit 227c superimposes and displays the sub image K31 generated by the trimming unit 207a cut out from the image data on the live view image W30 with respect to the zoom frame K30 or the electronic zoom frame (step S416). . Specifically, as illustrated in FIG. 20A, the display control unit 227c displays the zoom frame K30 on the live view image W30 displayed by the display unit 216. After step S416, the imaging device 1 proceeds to step S420.

  In step S417, the display control unit 227c displays the minimum zoom frame corresponding to the optical zoom limit value by the lens unit 3 on the live view image W30 displayed by the display unit 216.

  Subsequently, the display control unit 227c displays an electronic zoom frame by electronic zoom on the live view image W30 displayed by the display unit 216 (step S418), and displays a sub image on the live view image W30 (step S419). ). Specifically, as shown in FIG. 21, the display control unit 227c displays a minimum zoom frame K33 corresponding to the optical zoom limit value by the lens unit 3 on the live view image W30 displayed by the display unit 216. Thereafter, the electronic zoom frame K34 is displayed on the live view image W30 (FIG. 20 (a) → FIG. 20 (b)). At this time, the display control unit 227c superimposes and displays the sub-image K31 generated by the trimming unit 207a cut out from the image data area corresponding to the electronic zoom frame K34 on the live view image W30. After step S419, the imaging device 1 proceeds to step S420.

  Steps S420 to S423 correspond to steps S214 to S217 in FIG. 10, respectively.

  In step S424, when the optical zoom by the lens unit 3 is the limit (step S424: Yes), the imaging control unit 227b switches from the optical zoom by the lens unit 3 to the electronic zoom by the trimming unit 207a (step S445). Thereafter, the imaging device 1 proceeds to step S426. On the other hand, when the optical zoom by the lens unit 3 is not the limit (step S424: No), the imaging device 1 proceeds to step S426.

  Step S426 and step S427 correspond to step S218 and step S219 in FIG. 10, respectively.

  In step S428, the shooting control unit 227b causes the image sensor 203 to perform still image shooting. In this case, when the optical zoom by the lens unit 3 is the limit, the shooting control unit 227b cuts out an area corresponding to the electronic zoom frame K34 from the image data generated by the image pickup device 203 in the still image shooting to the trimming unit 207a. A trimmed image is generated.

  Steps S429 to S431 correspond to steps S221 to S223 in FIG. 10, respectively.

  According to the fourth embodiment described above, the trimming unit 207a generates a trimmed image by cutting out the imaging region corresponding to the predetermined zoom magnification by the lens unit 3 from the image data generated by the image sensor 203, The imaging control unit 227b controls the optical zoom of the lens unit 3 according to the zoom magnification of the trimmed image generated by the trimming unit 207a. Thereby, an area desired by the user can be enlarged and displayed by an intuitive operation without reducing the resolution of the image.

  Further, according to the fourth embodiment, when the display control unit 227c does not have the zoom frame K31 on the optical axis O of the lens unit 3, the trimming image generated by the trimming unit 207a is displayed on the display unit 216 in full screen. Thereby, even if the optical zoom by the lens unit 3 cannot be performed, the image can be displayed at a zoom magnification virtually desired by the user by the electronic zoom.

  Further, according to the fourth embodiment, the display control unit 227c causes the display unit 216 to display the trimming image generated by the trimming unit 207a on the full screen when the imaging area zoom frame by the optical zoom of the lens unit 3 is large. Thereby, even if optical zooming by the lens unit 3 cannot be performed, an image can be displayed on the display unit 216 virtually at a zoom magnification desired by the user by electronic zoom.

(Other embodiments)
In the above-described embodiment, the digital single-lens reflex camera is provided with a detachable lens unit with respect to the main body unit. However, for example, the lens unit including the optical system and the main body unit may be provided integrally. Good.

  In the above-described embodiment, the ring-shaped operation ring is provided in the lens unit. However, for example, a push-type switch or a lever-type changeover switch may be used.

  In the above-described embodiment, the eyepiece display unit is integrally formed with the main body unit. However, the eyepiece display unit may be detachable from the main body unit.

  In addition to a compact digital camera and a digital single-lens reflex camera, the imaging apparatus according to the present invention can be used as an electronic device such as a digital video camera to which accessories can be attached and a mobile phone or a tablet-type mobile device having a photographing function. Can be applied.

  In the description of the flowchart in the present specification, the context of the processing between steps is clearly indicated using expressions such as “first”, “after”, “follow”, etc., in order to implement the present invention. The order of processing required is not uniquely determined by their representation. That is, the order of processing in the flowcharts described in this specification can be changed within a consistent range.

  As described above, the present invention can include various embodiments not described herein, and various design changes and the like can be made within the scope of the technical idea specified by the claims. Is possible.

DESCRIPTION OF SYMBOLS 1 Imaging device 2 Main body part 3 Lens part 4 External apparatus 201 Shutter 202 Shutter drive part 203 Image pick-up element 204 Image pick-up element drive part 205 Signal processing part 206 A / D conversion part 207 Image processing part 207a Trimming part 207b Feature quantity detection part 207c Tracking Subject setting unit 208 AE processing unit 209 AF processing unit 210 Image compression / decompression unit 211 Input unit 211b Release switch 212 Accessory communication unit 213 Eyepiece display unit 214 Eye sensor 215 Movable unit 216 Display unit 217 Touch panel 218 Rotation determination unit 219 Status detection unit 220 Clock 221 Recording medium 222 Memory I / F
223 SDRAM
224 Flash memory 225 Main unit communication unit 226 Bus 227 Main unit control unit 227a Touch detection unit 227b Shooting control unit 227c Display control unit 301 Zoom lens 307 Focus lens 313 Lens control unit

Claims (9)

An imaging unit that receives light collected by a lens unit capable of optical zoom and generates captured image data;
A display unit for displaying a live view image corresponding to the captured image data;
An input unit that receives an input of an instruction to change the size of the imaging region corresponding to a predetermined zoom magnification in the optical zoom of the lens unit;
A trimming unit for trimming a part of an image corresponding to the captured image data in accordance with an instruction input to the input unit;
A shooting control unit for controlling the optical zoom of the lens unit according to a zoom magnification corresponding to the size trimmed by the trimming unit;
A display control unit for displaying on the display unit together with the live view image zoom information related to the shooting area corresponding to the predetermined zoom magnification and a trimmed image generated by trimming by the trimming unit;
Equipped with a,
The display control unit displays the trimmed image on the display unit on a full screen when the imaging region does not pass through the optical axis of the lens unit . The imaging apparatus according to claim 1 , wherein the display control unit changes a position or a size of the shooting area on the live view image according to the input instruction. The input unit is
A touch panel that is provided on the display screen of the display unit, detects a touch of an object from the outside, and outputs a position signal corresponding to the detected touch position;
The imaging apparatus according to claim 2 , wherein the imaging control unit causes the lens unit to execute optical zoom when the position signal is input from the touch panel. The input unit is
A release switch that accepts an input of a shooting preparation instruction signal for instructing a shooting preparation operation of the imaging apparatus;
The imaging apparatus according to claim 2 , wherein the imaging control unit causes the lens unit to execute optical zoom when the imaging preparation instruction signal is input from the release switch. A feature amount detection unit for detecting a feature amount of a subject included in the shooting area;
A tracking subject setting unit that sets a tracking subject to be tracked between adjacent images based on the feature amount detected by the feature amount detection unit;
Further comprising
The photographing control section, when the tracking subject set by the tracked object setting unit has entered the imaging area, one claim 1, characterized in that to execute optical zoom to the lens unit The imaging device described in one. The photographing control unit, in a case where the lens unit is performing the optical zoom when said tracked object is out of the imaging region, in claim 5, characterized in that stopping the optical zoom by the lens unit The imaging device described. The display controller, the relative display unit, an imaging apparatus according to claim 3, characterized in that to display the zoom frame to the touch position input by the input unit. An imaging apparatus comprising: an imaging unit that receives light collected by a lens unit capable of optical zoom and generates captured image data; and a display unit that displays a live view image corresponding to the captured image data. An imaging method to perform,
An input step of receiving an input of an instruction to change the size of the imaging region corresponding to a predetermined zoom magnification in the optical zoom of the lens unit;
A trimming step of trimming a part of an image corresponding to the captured image data in accordance with the instruction input in the input step;
A shooting control step of controlling the optical zoom of the lens unit according to the zoom magnification corresponding to the size trimmed in the trimming step ;
A display control step for displaying on the display unit together with the live view image the zoom information related to the shooting area corresponding to the predetermined zoom magnification and the trimmed image generated by the trimming step;
Including
In the display control step, when the photographing region does not pass through the optical axis of the lens unit, the trimmed image is displayed on the display unit on a full screen . An imaging apparatus comprising: an imaging unit that receives light collected by a lens unit capable of optical zooming to generate captured image data; and a display unit that displays a live view image corresponding to the captured image data. A program to be executed,
An input step of receiving an input of an instruction to change the size of the imaging region corresponding to a predetermined zoom magnification in the optical zoom of the lens unit;
A trimming step of trimming a part of an image corresponding to the captured image data in accordance with the instruction input in the input step;
A shooting control step of controlling the optical zoom of the lens unit according to the zoom magnification corresponding to the size trimmed in the trimming step ;
A display control step for displaying on the display unit together with the live view image the zoom information related to the shooting area corresponding to the predetermined zoom magnification and the trimmed image generated by the trimming step;
Only including,
The display control step displays the trimmed image on the display unit on a full screen when the imaging region does not pass through the optical axis of the lens unit .

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