JP2015118275A - Image processing apparatus, imaging apparatus, image processing method, program, and storage medium - Google Patents

Abstract

An image processing apparatus is provided that is advantageous for adjusting the degree of focus of a captured image.
An acquisition means (407) for acquiring a first image having a first number of pixels and a recording control means (416) for sequentially recording the first images sequentially acquired from the acquisition means on a recording medium. ), First generation means (407) for generating a second image obtained by reducing the first image to a second pixel number smaller than the first pixel number, and the first image from the first image Second generation means (408) for generating a third image cut out with the number of pixels of 2, and generating an evaluation value for focus control from one of the second image and the third image Evaluation value generation means (417).
[Selection] Figure 1

Description

  The present invention relates to an image processing device and an imaging device including the same.

  2. Description of the Related Art In an imaging device that captures moving images, so-called digital video cameras, in the field of movie shooting and the like, in order to perform moving image shooting of 1920 × 1080 pixels or more than so-called high-definition pixels, an increase in the number of pixels of the image sensor is expected. It has been. For example, digital video cameras capable of photographing and recording using an image sensor having a pixel number of 4096 × 2160 pixels (hereinafter referred to as 4K) or 7680 × 4320 pixels (hereinafter referred to as 8K) have appeared.

  In this digital video camera using a high-pixel image sensor, when the user uses the display device attached to the main body during shooting, if the number of pixels is smaller than the number of pixels of the image sensor, the image captured by the image sensor is a predetermined size. An image that has been reduced by thinning out is displayed. As a result, the display image is in a state where a low-pass filter is applied to the high frequency component of the spatial frequency. Therefore, for example, when a manual focus (hereinafter referred to as MF) operation is performed by displaying an enlarged image on the display device, the image that has been reduced once is displayed again on the display device. There is a problem that it is impossible to judge properly.

  As a method for solving this problem, a method is known in which an image for a low-pixel display means is reduced and generated using an optical zoom (Patent Document 1).

Japanese Patent Application No. 10-40744

  However, in the method disclosed in Patent Document 1, since the reduction process using the optical zoom is performed, the responsiveness to the user operation is poor, and further, the angle of view of the subject image input to the image sensor changes, so that the moving image There was a problem that it could not be used for recording.

  In view of the above problems, an object of the present invention is to provide an image processing device, an imaging device, an image processing method, a program, and a storage medium that are advantageous for adjusting the degree of focusing of a captured image.

  An image processing apparatus according to one aspect of the present invention sequentially acquires, on a recording medium, an acquisition unit that acquires a first image having a first number of pixels, and the first image that is sequentially acquired from the acquisition unit. A recording control unit; a first generation unit configured to generate a second image obtained by reducing the first image to a second pixel number smaller than the first pixel number; and the second image from the first image. Second generation means for generating a third image cut out with the number of pixels, and evaluation value generation for generating an evaluation value for focus control from one of the second image and the third image And means.

  Other objects and features of the present invention are illustrated in the following examples.

  According to the present invention, it is possible to provide an image processing apparatus, an imaging apparatus, an image processing method, a program, and a storage medium that are advantageous for adjusting the degree of focus of a captured image.

It is a block diagram of the imaging device which is the 1st Embodiment of this invention. It is a figure which shows the captured image and output image in the enlarged display in 1st Embodiment. It is a flowchart which shows operation | movement of the system controller in 1st Embodiment. It is a block diagram of the imaging device which is the 2nd Embodiment of this invention. It is a figure which shows the original image of contrast AF in 2nd Embodiment. It is a figure which shows the luminance contrast ratio of the original image in 2nd Embodiment. It is a flowchart which shows operation | movement of the system controller in 2nd Embodiment.

<First Embodiment>
FIG. 1 is a configuration diagram of an image pickup apparatus according to the first embodiment of the present invention.

  In FIG. 1, 101 is an imaging lens, 102 is a focus lens that controls the focus of an image to be formed, 103 is a drive unit that drives the focus lens 102, and 104 is a drive amount determination unit that determines the drive amount of the focus lens 102. is there.

  Reference numeral 105 denotes an image sensor (imaging means) having a photoelectric conversion function, 106 denotes a correction unit that performs a correction process on the output result from the image sensor 105, and 107 denotes an image after the correction process as two types of image data having different numbers of pixels. A distributor (first generating means) for distributing. Reference numeral 108 denotes a cutout unit (second generation unit) that cuts out image data, and reference numeral 109 denotes a selection unit (selection unit) that selects and outputs one of the two input image data. 110 is a developing unit (processing unit) that performs various image processing on input image data with predetermined parameters, 111 is a display unit (display unit) that displays an output result of the developing unit 110, and 112 is output from the distributor 107. This is an external recording apparatus that records one image.

  Reference numeral 113 denotes a manual focus operation key (MF operation key), 114 denotes a focus operation mode changeover switch (MF / AF changeover SW), and 115 denotes an enlargement display instruction switch. Reference numeral 116 denotes a system controller that inputs operation keys and various switch states and instructs the cut-out unit 108 and the selection unit 109 to change operations. The distributor 107, the cutout unit 108, the selection unit 109, and the system controller 116 constitute an image processing apparatus.

  Next, the operation of the imaging apparatus in FIG. 1 will be described. The light that has passed through the imaging lens 101 and the focus lens 102 forms an image on the image sensor 105, undergoes photoelectric conversion and A / D conversion, and becomes image data. The effective pixel number of the image sensor 105 is 8K or more. In the image data, the correction unit 106 corrects defective pixels and corrects the output level of each pixel of the image sensor.

  The generated and corrected image data is usually subjected to image processing such as gamma correction and color correction in the image processing unit, and the result is displayed on the liquid crystal display attached to the main unit or encoded to the recording medium. Saved. However, this image processing unit outputs the image data (hereinafter referred to as “raw data”) in a state where image processing such as gamma correction, color correction, and bit length conversion described above is not performed to the outside, and displays it on an external display device. Can be stored on an external recording medium. In the present embodiment, image data in a state where image processing is not performed, that is, raw data is stored in an external recording device described later.

  Raw data is data that has not been subjected to image processing and encoding processing, and therefore has a large data size, requires a larger transmission band for external output, and requires a higher access speed to the recording medium. It is said. However, there is an advantage that the user can perform any kind of image processing such as gamma correction, color correction, and bit length conversion on the raw data recorded after the shooting.

  The distributor 107 distributes the input from the correction unit 106 to two systems of outputs. The first output pixel number is 8K, and the second output pixel number is 1920 × 1080 pixels (hereinafter referred to as 2K). That is, the distributor 107 functions as an acquisition unit that acquires a first image having the first number of pixels (8K in this embodiment). The output image data of the distributor 107 is data before various image processing, and is the above-described raw data.

  Of the output of the distributor 107, 2K Raw data is input to the selector 109. Of the outputs, 8K Raw data (sequentially acquired RAW images) are sequentially input to the recording medium (external recording device 112) and recorded by the system controller (recording control means), while being input to the clipping unit 108.

  The cutout unit 108 cuts out a 2K size image from a predetermined position (predetermined range) in the input 8KRaw data, and outputs 2KRaw data. The cut-out 2KRaw data is input to the selection unit 109. An instruction to execute cutout and a cutout position are issued from the system controller 116.

  The selection unit 109 selects and outputs one of the two systems of 2 KRAW data input. Which data is to be output is instructed from the system controller (display control means) 116 according to a mode to be described later.

  The developing unit 110 performs gamma correction, noise reduction, luminance / color level conversion, and color space conversion to Ycc data composed of luminance signals and color difference signals on the 2KRaw data output from the selection unit 109.

  The display unit 111 displays 2KYcc data that is output data of the developing unit 110 on a display device (not shown).

  A manual focus operation key (instruction means) 113 is a key for operating the focus lens 102 in the manual focus mode. The key operation information is input to the system controller 116 and also to the drive amount determination unit 104.

  The drive amount determination unit 104 determines a drive amount for driving the focus lens 102 in the closest or infinity direction, and outputs a control signal to the drive unit 103. The drive unit 103 drives the focus lens 102 according to the instructed control signal.

  A focus operation mode switching switch (switching unit) 114 is a switch for switching the focus operation mode to manual or auto. The state of the switch is input to the system controller 116. During manual operation, it operates according to the operation of the manual focus operation key 113, and during auto operation, focusing control is performed based on an evaluation value generated by an evaluation value generation unit (not shown). At the time of this automatic operation, an evaluation value generation unit (not shown) may develop one image of the above-mentioned two systems of 2KRaw data to generate an evaluation value for focus control.

  The enlarged display instruction switch (instruction means) 115 is a switch for instructing the display unit 111 to be valid / invalid for enlarging and displaying a part of the result captured by the image sensor 105. The state of the switch is input to the system controller 116.

  A system controller 116 controls the entire imaging apparatus. The state of various keys and switches is acquired, and operation instructions are given to the drive amount determination unit 104, the cutout unit 108, the selection unit 109, and the development unit 110.

  Next, an enlarged display operation in the present embodiment will be described with reference to FIGS. First, a case where the enlarged display instruction switch 115 is operated to disable the enlarged display (that is, when a normal image is displayed on the display unit 111) will be described. The captured image input to the distributor 107 is shown in FIG. Of the output of the distributor 107, the 8K Raw data is an image (first image having a first number of pixels) shown in FIG. 2B in which the 8K cut-out area 201 is cut out from FIG. The other 2K Raw data is the image shown in FIG. 2C obtained by reducing FIG. 2B to 2K size (the second image obtained by reducing the first image to a second number of pixels smaller than the first number of pixels). ) The developing unit 110 processes the image of FIG. 2C, and the display unit 111 displays the image of FIG. At this time, the 8K Raw image data and the 2K Raw / 2KYcc image data are images having the same angle of view, and an angle of view substantially equal to the captured image is output and displayed.

  Next, a case where the enlarged display instruction switch 115 is operated to enable enlarged display (that is, a case where an enlarged image is displayed on the display unit 111) will be described. The captured image input to the distributor 107 is the same as the captured image in FIG. 2A when it is invalid in FIG. Similarly, among the outputs of the distributor 107, the 8K Raw data is an image shown in FIG. 2 (f) in which the 8K cut-out area 201 is cut out from FIG. 2 (e). The other 2K Raw data is the image shown in FIG. 2G obtained by cutting out the 2K cutout region 202 in FIG. 2F by the cutout unit 108 (second pixels smaller than the first number of pixels from the first image). A third image cut out by number). The developing unit 110 processes the image in FIG. 2G, and the display unit 111 displays the image in FIG. At this time, the 8K Raw image data outputs an angle of view substantially equal to the captured image, whereas the 2K Raw / 2KYcc image data is an image obtained by enlarging and displaying a part of the captured image.

  Next, enlargement display control of the system controller 116 during the manual focus operation will be described with reference to the flowchart of FIG.

  In step S301, it is determined from the state of the enlarged display instruction switch 115 whether the enlarged display is valid or invalid. If it is valid, the process proceeds to step S302. If it is invalid, it is determined that the enlarged display is not performed, and the process proceeds to step S305.

  In step S302, it is determined from the state of the focus operation mode changeover switch 114 whether the focus mode is manual focus or auto focus. If it is manual focus, it is determined that enlargement display is not performed if it is auto focus, and the process proceeds to step S305.

  In step S303, it is determined from the operation information of the manual focus operation key 113 whether or not to execute enlarged display. Executed when the focus lens operation is within a certain time from the last operation. That is, the enlarged display is continued during the manual focus operation and within a certain time immediately after the operation even when there is no operation. If the enlarged display is to be executed, the process proceeds to step S304, and if it is determined that the enlarged display is not to be executed, the process proceeds to step S305.

  In step S304, the cutout position of the 2K cutout area 202 is instructed from the 8Kraw data to the cutout unit 108. In addition, the selection unit 109 is instructed to select 2KRaw data cut out from the 8KRaw data as output data. Further, image processing parameters suitable for enlarged display are set for the developing unit 110.

  In step S305, the selection unit 109 is instructed to select the 2KRaw data output from the distributor 107 as output data. Further, image processing parameters suitable for the same size display that is not enlarged display are set for the developing unit 110.

The enlarged display in the present embodiment is used for visual confirmation of the degree of focus in the manual focus operation. When the number of pixels of the image sensor is larger than the number of pixels of the display device of the display unit, when the angle of view being captured is displayed, a reduced image as shown in FIG. High-frequency components are lost, and the degree of focus cannot be confirmed and confirmed sufficiently. Therefore, by cutting 2K from the 8K Raw image data and displaying it on the display unit as shown in FIG. 2 (h), the high-frequency component is not lost, and the user visually confirms the degree of focus and performs more accurate adjustment. It becomes possible. According to the present embodiment, it is possible to provide an image processing apparatus that is advantageous for adjusting the degree of focus and an imaging apparatus including the image processing apparatus.
<Second Embodiment>
FIG. 4 is a configuration diagram of an imaging apparatus according to the second embodiment of the present invention.

  In FIG. 4, 401 is an imaging lens, 402 is a focus lens that controls the focus of an image to be formed, 403 is a drive unit that drives the focus lens 402, and 404 is a drive amount determination unit that determines the drive amount of the focus lens 402. is there.

  Reference numeral 405 denotes an image pickup device (image pickup means) having a photoelectric conversion function, 406 denotes a correction unit that performs a correction process on the output result from the image pickup element 405, and 407 denotes an image after the correction process as image data of two systems having different numbers of pixels. A distributor (first generating means) for distributing. Reference numeral 408 denotes a cutout unit (second generation unit) that cuts out image data, and reference numeral 409 denotes a selection unit (selection unit) that selects and outputs one of the two input image data. A developing unit 410 performs various image processing on input image data with predetermined parameters, a display unit 411 displays an output result of the developing unit 410, and an external recording unit 412 records one image output from the distributor 407. Device.

  Reference numeral 414 denotes a focus operation mode changeover switch (MF / AF changeover SW), and reference numeral 416 denotes a system controller (control means) that issues an operation changeover instruction to the cutout unit 408 and the selection unit 409.

  Reference numeral 417 denotes an evaluation value generation unit (evaluation value generation means) that generates an evaluation value for autofocus control from the image data output from the selection unit 409. The distributor 407, the cutout unit 408, the selection unit 409, the system controller 416, and the evaluation value generation unit 417 constitute an image processing apparatus.

  Next, the operation of the imaging apparatus in FIG. 4 will be described. The light that has passed through the imaging lens 401 and the focus lens 402 forms an image on the image sensor 405, undergoes photoelectric conversion and A / D conversion, and becomes image data. The number of effective pixels of the image sensor 405 is 8K or more. In the image data, the correction unit 406 corrects defective pixels and corrects the output level of each pixel of the image sensor.

  The distributor 407 distributes the input from the correction unit 406 to two systems of outputs. The first output pixel number is 8K, and the second output pixel number is 2K. That is, the distributor 107 functions as an acquisition unit that acquires a first image having the first number of pixels (8K in this embodiment). The output image data of the distributor 407 is called raw data because it is before various image processing.

  Of the output of the distributor 407, 2K Raw data is input to the selection unit 409 and the development unit 410. 8K Raw data (sequentially acquired RAW images) of the output is sequentially input to the recording medium (external recording device 412) and recorded by the system controller (recording control means), and is input to the clipping unit 408.

  The cutout unit 408 cuts out a 2K image from a predetermined position (predetermined range) in the input 8KRaw data, and outputs 2KRaw data. The extracted 2KRaw data is input to the selection unit 409. An instruction to execute cutout and a cutout position are issued from the system controller 416.

  The selection unit 409 selects and outputs one of the two systems of 2 KRAW data that has been input. The system controller 416 instructs which data to output.

  The evaluation value generation unit 417 generates evaluation values for performing contrast AF by developing the 2KRaw data selected by the selection unit 409. The generated evaluation value is input to the drive amount determination unit 404 and the system controller (determination unit) 416.

  The developing unit 410 performs gamma correction, noise reduction, luminance / color level conversion, and color space conversion to Ycc data composed of luminance signals and color difference signals on the 2KRaw data output from the distributor 407.

  The display unit 411 displays 2KYcc data that is output data of the developing unit 410 on a display device (not shown).

  The drive amount determination unit 404 determines a drive amount for driving the focus lens 402 in the closest or infinite direction based on the evaluation value generated by the evaluation value generation unit 417, and outputs a control signal to the drive unit 403. The drive unit 403 drives the focus lens 402 according to the instructed control signal.

  In this embodiment, the evaluation value generation method for contrast AF control in the evaluation value generation unit 417 and the method for determining the drive amount from the evaluation value obtained in the drive amount determination unit 404 may be any method. Therefore, the description is omitted here.

  The focus operation mode switching switch 414 is a switch for switching the focus operation mode to manual or auto. The state of the switch is input to the system controller 416. During manual operation, it operates according to the operation of a manual focus operation key (not shown), and during auto operation, focusing control is performed based on the evaluation value generated by the evaluation value generation unit 417.

  A system controller 416 controls the entire imaging apparatus. The switch state, contrast AF evaluation value, and lens driving amount are acquired, and an operation instruction is given to the clipping unit 408 and the selection unit 409.

  Next, an autofocus (hereinafter referred to as AF) operation in the present embodiment will be described with reference to FIGS. 4, 5, and 6. The captured image input to the distributor 407 is shown in FIG. Among the outputs of the distributor 407, the 8K Raw data is the image (first image having the first number of pixels) shown in FIG. 5B in which the 8K cut-out area 501 is cut out from FIG. FIG. 5D shows 2K Raw data, and an image obtained by cutting out the 2K cutout region 502 from FIG. 5B (a third image cut out from the first image with a second number of pixels smaller than the first number of pixels). ). The other 2K Raw data is the image shown in FIG. 5C obtained by reducing FIG. 5B to 2K size (the second image obtained by reducing the first image to a second number of pixels smaller than the first number of pixels). ) The selection unit 409 uses either one of FIGS. 5C and 5D as an original image for generating an evaluation value for contrast AF control. The evaluation value generation unit 417 processes the input original image for generating the evaluation value and calculates an evaluation value.

  FIG. 6 is an example showing the difference when the original image for generating the evaluation value is 2KRaw data and 8KRaw data. 6A shows an example in which the luminance contrast ratio is calculated along the cross section 503 of the original image of FIG. 5C, and FIG. 6B shows the original image of FIG. 5D along the cross section 504. This is an example of calculating the luminance contrast ratio.

  For example, when focusing on the vicinity of the center of the screen in FIG. 5B, the spatial frequency component in FIG. 6B is compared with the luminance contrast ratio in FIG. 6A and FIG. high. Therefore, more accurate AF control is possible by generating an evaluation value from the original image in FIG.

  On the other hand, if it is in the middle of focusing or at the stage of searching for a target point for focusing, since the difference in contrast ratio shown in FIGS. 6A and 6B is small, an evaluation value for the entire screen can be generated. It is easier to set a target point for focusing if the evaluation value is generated from the original image of 5 (c).

  Next, the original image switching control for generating the evaluation value during the AF operation of the system controller 416 will be described with reference to the flowchart of FIG.

  In step S701, it is determined whether the focus mode is manual focus or autofocus from the state of the focus operation mode switch 414. If it is auto focus, it is determined that the original image for generating the evaluation value is not switched if it is manual focus, and the process proceeds to step S705.

  In step S702, based on information from the drive amount determination unit 404 and the evaluation value generation unit 417, it is determined whether or not the drive mode of the focus lens 102 is being searched. The search mode is a mode for searching whether the focus lens 102 can be focused on the main subject by moving the focus lens 102 in the close direction or the infinity direction. If it is determined that the search is not being performed, the process proceeds to step S703. If it is determined that the search is being performed, the process proceeds to step S705.

  In step S703, based on information from the evaluation value generation unit 417, it is determined whether or not the current focus lens 102 is in the vicinity of in-focus. If it is determined that the object is in focus, the process proceeds to step S704. On the other hand, if it is determined that the object is not in focus, the process proceeds to step S705.

  In step S704, the selection unit 409 is instructed to use the original image for evaluation value generation input to the evaluation value generation unit 417 as 8K Raw data, and the process ends.

  In step S705, the selection unit 409 is instructed to use the evaluation value generation original image input to the evaluation value generation unit 417 as 2K Raw data, and the process ends.

  In the present embodiment, by switching the original image for generating the evaluation value according to the degree of focus, a highly reliable evaluation value is generated, and the drive amount control is performed using this evaluation value, High-precision autofocus control can be realized. That is, according to the present embodiment, it is possible to provide an image processing apparatus that is advantageous for adjusting the degree of focus and an imaging apparatus including the image processing apparatus. At this time, a cut-out processing unit from high-definition 8K Raw data is added, and the evaluation value generating unit is shared with that of existing 2K Raw data, so that it is not necessary to add a large circuit scale.

  As described above, the first embodiment of the present invention can be applied when outputting an image to a low-resolution display unit during a manual focus operation of an imaging apparatus capable of outputting two images having different resolutions. It is. During manual focus operation, the number of pixels that can be displayed by the display means is extracted from the high-resolution raw data and switched to perform the necessary image processing, enabling more precise manual focus operation while zooming in. It becomes. Furthermore, by making the image processing means common to Raw data cut out from a high-resolution image and low-resolution Raw data, it is possible to realize a reduction in circuit scale and power consumption.

  Further, the second embodiment of the present invention can be applied during an autofocus operation of an imaging apparatus capable of outputting two images having different resolutions. For the evaluation value generation of contrast AF for autofocus control, focus control is performed using low-resolution raw data when not in focus, and raw data cut out from a high-resolution image when close to focus. By doing so, an evaluation value with higher resolution of the high-frequency component of the spatial frequency can be obtained near the in-focus state, and high-precision contrast AF control can be performed based on this evaluation value. Furthermore, by making the evaluation value generating means common to Raw data cut out from a high-resolution image and low-resolution Raw data, it is possible to realize a reduction in circuit scale and power consumption.

  Although the present invention has been described in detail based on preferred embodiments thereof, the present invention is not limited to these specific embodiments, and various forms within the scope of the present invention are also included in the present invention. included. A part of the above-described embodiments may be appropriately combined. For example, in the second embodiment of the present invention, the evaluation value generation unit 417 receives the above-described evaluation based on the 2KRaw data cut out from the 8KRaw data when receiving an enlargement display instruction by an unillustrated enlargement display instruction SW. A value may be generated.

  Also, a software program in which a procedure for realizing the functions of the above-described embodiments is described is supplied from a recording medium directly to a system or apparatus having a computer that can execute the program using wired / wireless communication. Cases are also included in the present invention. Further, the present invention includes a case where the computer executes the program.

  Accordingly, the program code itself supplied and installed in the computer in order to implement the functional processing of the present invention by the computer also realizes the present invention. That is, the computer program itself for realizing the functional processing of the present invention is also included in the present invention.

  In this case, the program may be in any form as long as it has a program function, such as an object code, a program executed by an interpreter, or script data supplied to the OS.

  As a recording medium for supplying the program, for example, a magnetic recording medium such as a hard disk or a magnetic tape, an optical / magneto-optical storage medium, or a nonvolatile semiconductor memory may be used.

  As a program supply method, a computer program that forms the present invention is stored in a server on a computer network, and a connected client computer downloads and programs the computer program.

  The present invention can be suitably used for an imaging apparatus such as a compact digital camera, a single-lens reflex camera, and a video camera.

107, 407... Distributor 108, 408... Cutout section 109, 409... Selection section 116, 416.

Claims (15)

Obtaining means for obtaining a first image having a first number of pixels;
Recording control means for sequentially recording the first images sequentially obtained from the obtaining means on a recording medium;
First generation means for generating a second image obtained by reducing the first image to a second number of pixels smaller than the first number of pixels;
Second generation means for generating a third image cut out from the first image with the second number of pixels;
Evaluation value generation means for generating an evaluation value for focus control from one of the second image and the third image;
An image processing apparatus comprising: The first, second and third images are RAW images;
The image processing apparatus according to claim 1, wherein the recording control unit records the first image on the recording medium in a RAW image state.   The image processing apparatus according to claim 1, wherein the evaluation value generation unit generates the evaluation value by developing the second and third images.   Based on the evaluation value generated by the evaluation value generating means, if it is determined that the position of the focus lens is not near the focus, the evaluation value generating means generates the evaluation value from the second image. The evaluation value is generated from the third image by the evaluation value generation means when it is determined that the position of the focus lens is near the in-focus position. The image processing apparatus according to any one of the above.   5. The image processing according to claim 1, wherein the evaluation value generation unit generates the evaluation value from the third image when receiving an instruction for enlarged display. 6. apparatus. Determination means for determining whether or not the position of the focus lens is in the vicinity of in-focus based on the evaluation value generated by the evaluation value generating means;
Switching means for switching the focus mode,
The image processing apparatus according to claim 4, wherein the determination unit determines whether or not the focus is close based on the evaluation value when the focus mode is auto focus. Obtaining means for obtaining a first image having a first number of pixels;
Recording control means for sequentially recording the first images sequentially obtained from the obtaining means on a recording medium;
First generation means for generating a second image obtained by reducing the first image to a second number of pixels smaller than the first number of pixels;
Second generation means for generating a third image cut out from the first image with the second number of pixels;
An image processing apparatus comprising: display control means for displaying one of the second image and the third image on a display means according to a mode. The first, second and third images are RAW images;
The image processing apparatus according to claim 7, wherein the recording control unit records the first image on the recording medium in a RAW image state.   An evaluation value generating means for generating an evaluation value for focus control from one of the second image and the third image is developed by processing the second and third images, respectively. The image processing apparatus according to claim 7 or 8, wherein: Having a switching means for switching the focus mode;
The image processing apparatus according to claim 7, wherein the display control unit displays the third image when the focus mode is manual focus. Imaging means;
The image processing apparatus according to any one of claims 1 to 10,
An imaging device comprising: An acquisition step of acquiring a first image having a first number of pixels;
A recording control step of sequentially recording the first images sequentially acquired from the acquiring step on a recording medium;
A first generation step of generating a second image obtained by reducing the first image to a second number of pixels smaller than the first number of pixels;
A second generation step of generating a third image cut out from the first image with the second number of pixels;
An evaluation value generating step for generating an evaluation value for focus control from one of the second image and the third image;
An image processing method comprising: An acquisition step of acquiring a first image having a first number of pixels;
A recording control step of sequentially recording the first images sequentially acquired from the acquiring step on a recording medium;
A first generation step of generating a second image obtained by reducing the first image to a second number of pixels smaller than the first number of pixels;
A second generation step of generating a third image cut out from the first image with the second number of pixels;
An image processing method comprising: a display control step of displaying one of the second image and the third image on a display unit according to a mode.
  A computer-executable program in which the procedure of the image processing method according to claim 12 is described.   A computer-readable storage medium storing a program for causing a computer to execute each step of the image processing method according to claim 12 or 13.