JP7275482B2 - Image processing device, information processing device, imaging device, and image processing program - Google Patents

Description

The present invention relates to an image processing device, an information processing device, an imaging device, and an image processing program.

2. Description of the Related Art Conventionally, there has been disclosed an image pickup apparatus that performs edge enhancement and noise reduction using high frequency components and low frequency components contained in image data (see, for example, Japanese Unexamined Patent Application Publication No. 2002-200012).

JP 2009-21862 A

An image processing device according to one aspect of the invention disclosed in the present application includes a contour component in a first spatial frequency band, a second spatial frequency lower than the first spatial frequency in the first spatial frequency band, and A third spatial frequency band that includes a contour component of a second spatial frequency band that partially overlaps with the first spatial frequency band and a third spatial frequency that is lower than the second spatial frequency and that partially overlaps with the second spatial frequency band each correction information for each of the contour components of the spatial frequency band can be set independently , based on the display magnification of the image to be displayed, setting unit for setting each correction information, and a correction unit that corrects the image data based on each piece of correction information.

An imaging device according to one aspect of the invention disclosed in the present application includes an imaging unit that images a subject, a contour component in a first spatial frequency band, and a second spatial frequency lower than the first spatial frequency in the first spatial frequency band. a contour component of a second spatial frequency band that includes a frequency and partially overlaps with the first spatial frequency band; and a third spatial frequency that is lower than the second spatial frequency, and the second spatial frequency band A setting unit that can independently set each correction information for each of the contour components of the third spatial frequency band that partly overlaps with, and sets each of the correction information based on the display magnification of the image to be displayed ; and a correction unit that corrects the image data output from the imaging unit based on each correction information set by the setting unit.

An image processing program according to one aspect of the invention disclosed in the present application includes a contour component in a first spatial frequency band, a second spatial frequency lower than the first spatial frequency in the first spatial frequency band, and A third spatial frequency band that includes a contour component of a second spatial frequency band that partially overlaps with the first spatial frequency band and a third spatial frequency that is lower than the second spatial frequency and that partially overlaps with the second spatial frequency band Each correction information for each contour component of the spatial frequency band can be set independently, and a setting process for setting each correction information based on the display magnification of an image to be displayed; and a correction process for correcting the image data based on the correction information.

FIG. 1 is a graph showing an example of edge enhancement of an image. FIG. 2 is an explanatory diagram showing an example of setting information for each edge enhancement of an image. FIG. 3 is an explanatory diagram showing an example of a setting screen for edge enhancement setting of an image. FIG. 4 is an explanatory diagram showing example 1 of quick edge enhancement for each display magnification. FIG. 5 is an explanatory diagram showing example 2 of quick edge enhancement for each display magnification. FIG. 6 is an explanatory diagram showing example 3 of quick edge enhancement for each display magnification. FIG. 7 is a block diagram showing a hardware configuration example of an imaging device. FIG. 8 is a block diagram of a functional configuration example of the imaging apparatus according to the first embodiment; FIG. 9 is a flowchart illustrating an example of an edge enhancement processing procedure according to the first embodiment; FIG. 10 is a flowchart illustrating an example of an edge enhancement process procedure according to the second embodiment. FIG. 11 is an explanatory diagram showing an example of a communication system in which an imaging device and a transmission destination are communicably connected. FIG. 12 is an explanatory diagram showing setting information. FIG. 13 is a block diagram of a functional configuration example of an imaging apparatus according to a third embodiment; FIG. 14 is an explanatory diagram showing an example of a destination selection screen. FIG. 15 is a flowchart of a contour enhancement process procedure example 1 according to the third embodiment. FIG. 16 is a flowchart of an edge enhancement process procedure example 2 according to the third embodiment. FIG. 17 is a block diagram of a functional configuration example of an imaging apparatus according to a fourth embodiment; FIG. 18 is a flowchart of an information processing procedure example 1 according to the fourth embodiment. FIG. 19 is a flowchart of an information processing procedure example 2 according to the fourth embodiment. FIG. 20 is an explanatory diagram showing an example of outline enhancement of a divided area. FIG. 21 is a block diagram of a functional configuration example of an imaging apparatus according to a fifth embodiment; FIG. 22 is a flowchart illustrating an example of an edge enhancement processing procedure according to the fifth embodiment;

<Example of image edge enhancement>
FIG. 1 is a graph showing an example of edge enhancement of an image. Graphs 101 to 104 show the relationship between the degree of enhancement of the edge component of the image and the spatial frequency. The vertical axis 111 of the graphs 101 to 104 indicates the degree of enhancement of the contour component, and the horizontal axis 112 indicates the spatial frequency. A first graph 101 is a graph for emphasizing contour components (first contour emphasis) in a high spatial frequency band. The first edge enhancement is a so-called general edge enhancement process, and a suitable sense of resolution can be obtained at a display magnification of 50% or more, particularly about 100%. Note that edge enhancement includes not only processing for enhancing edge components, but also processing for weakening edge components.

The second graph 102 is a graph for emphasizing contour components (second contour enhancement) in the middle frequency band of spatial frequencies. The second edge enhancement provides a favorable sense of resolution, especially at a display magnification of about 25 to 50%. A third graph 103 is a graph for emphasizing contour components (third contour emphasis) in the low spatial frequency band. The third edge enhancement is a so-called general articulation adjustment process, and a suitable sense of resolution can be obtained especially at a display magnification of 25% or less. A fourth graph 104 is a graph for adjusting contour components, that is, contrast of an image, in the low-frequency band to the high-frequency band of spatial frequencies.

The user can independently adjust the emphasis of each spatial frequency band in the direction of the vertical axis 111 as shown in the first graph 101 to the third graph 103 . For example, the user can adjust the values along the vertical axis 111 of the first to third graphs 101 to 103 to emphasize or weaken the contour components of the image.

In FIG. 1, an example was given in which contour enhancement can be set in three spatial frequency bands, the high frequency band, the middle frequency band, and the low frequency band. Can be set. Also, each spatial frequency band may partially overlap.

FIG. 2 is an explanatory diagram showing an example of setting information for each edge enhancement of an image. FIG. 2 shows an example of quick edge enhancement that collectively adjusts each of the first to third graphs 101 to 103 shown in FIG. The setting information 200 is stored in a storage device 702 which will be described later. The setting information 200 defines changeable setting values as correction information for adjusting edge enhancement processing of image data.

The set value of quick edge enhancement can be set within a range of -2 to +2, for example. Also, the set values for the first to third edge enhancements vary according to the set values for the quick edge enhancement. The setting values of the first to third edge enhancement correspond to the vertical axis 111 in FIG. , the edge component of each frequency band of the image is emphasized.

Moreover, each setting value of the first edge enhancement to the third edge enhancement can be set to a negative value. For example, by setting the set value of the first edge enhancement to a negative value, the edge component of the image can be weakened and the image can be softly finished. Further, by setting the set values of the second edge enhancement and the third edge enhancement to negative values, the contrast of the image can be lowered and the image can be softly finished.

For each of the three values of quick edge enhancement, set values are determined so that the sense of resolution does not change at any display magnification of the image. Therefore, a favorable sense of resolution can be obtained at any display magnification. For example, if the user sets the quick edge enhancement setting to "+2," the high frequency band is set to "5," the mid frequency band to "4.5," and the low frequency band to "3." In this way, since the contour components of the three spatial frequency bands are appropriately emphasized, the contour components of the subject with a wide range of spatial frequencies in the image can be emphasized. Regardless of the display magnification of the image, the outline component of the subject in the image is emphasized, in other words, the image is corrected to an image in which the outline component is conspicuously visible (so-called sharp image).

Also, when the user sets the setting value of quick edge enhancement to "-2", the high frequency band is set to "-0.5", the middle frequency band to "-1", and the low frequency band to "-1". be done. As a result, regardless of the display magnification of the image, the outline component of the subject in the image is weakened, in other words, the subject is corrected to appear soft. In this way, since the contour components of the three spatial frequency bands are appropriately emphasized, the contour components of the subject with a wide range of spatial frequencies in the image can be emphasized.

Also, when the user sets the setting value of quick edge enhancement to "0", the high frequency band is set to "3", the middle frequency band to "2", and the low frequency band to "1". As a result, the outline component of the subject in the image is corrected to a standard image regardless of the display magnification of the image. In this way, since the contour components of the three spatial frequency bands are appropriately emphasized, the contour components of the subject with a wide range of spatial frequencies in the image can be emphasized.

In this way, the setting values for the high frequency band, the middle frequency band, and the low frequency band are set in conjunction only by the user adjusting the setting value for quick edge enhancement. Therefore, it is possible to correct the image so as to obtain a sense of resolution according to the user's preference, without depending on the display magnification of the image.

FIG. 3 is an explanatory diagram showing an example of a setting screen for edge enhancement setting of an image. FIG. 3 shows, as an example, the setting screen 300 displayed on the back monitor of an imaging device such as a digital camera, but the setting screen 300 may be displayed on the display of a personal computer, tablet, or smart phone. Note that, on the setting screen 300, a cursor or slider may be moved by an operation device such as an operation button or a dial, or a button may be selected or a slider may be moved in the setting screen 300 by the user's finger on the touch panel. .

The setting screen 300 has a selection area 301 and an adjustment area 302 . The selection area 301 has a quick edge enhancement selection button 310 , a first edge enhancement selection button 311 , a second edge enhancement selection button 312 , and a third edge enhancement selection button 313 . A quick edge enhancement selection button 310 is a button displayed for selecting quick edge enhancement. A first edge enhancement selection button 311 to a third edge enhancement selection button 313 are buttons displayed for selecting the first edge enhancement to the third edge enhancement. Each of these selection buttons 310 to 313 is selected by the operation device 708 (see FIG. 7) or the user's finger. FIG. 3 shows a state in which the quick edge enhancement selection button 310 is selected.

The adjustment area 302 has bars 320 to 323 corresponding to the respective selection buttons 310 to 313, and sliders 330 to 333 that move on each bar to designate setting values. The range of bars 320-323 is a designated range for designating the degree of enhancement in each edge enhancement of the corresponding selection buttons 310-313. The positions of the bars 320-323 indicated by the sliders 330-333 correspond to the vertical axis 111 in FIG. The contour components of the image are emphasized.

Each slider can be moved by touching and moving it left or right. Further, each of the sliders 330-333 may be movable along the bars 320-323 by the operation device 708 or the user's finger when the corresponding selection buttons 310-313 are pressed. For example, when the first contour emphasis selection button 311 is pressed, only the slider 331 can be moved along the bars 320 to 323 by the operation device 708 or the user's finger, and the other sliders 330, 332, 333 are moved. It is not possible.

Also, when the quick edge enhancement selection button 310 is pressed, the quick edge enhancement can collectively adjust the first to third graphs 101 to 103 of the high frequency band, the middle frequency band, and the low frequency band. 2, the sliders 330 to 333 are moved in conjunction with the set value of quick edge enhancement shown in FIG.

In FIG. 3, when the slider 330 indicates "1" as a set value by moving the operation device 708 or the user's finger, the slider 331 indicates "4", the slider 332 indicates "3.5", and the slider 333 indicates "2". (see Figure 2). As a result, by setting the quick edge enhancement, it is possible to collectively set the enhancement level of each edge component in the high frequency band, the middle frequency band, and the low frequency band. Therefore, it is possible to improve the convenience in the edge enhancement setting.

Also, an automatic setting button 340 is displayed between the quick edge enhancement selection button 310 and the bar 320 . The automatic setting button 340 can be pressed by the operation device 708 or the user's finger when the quick edge emphasis selection button 310 is pressed. When the automatic setting button 340 is pressed, the imaging device sets quick contour enhancement setting values suitable for the shooting scene detected by scene recognition, such as brightness in the image, portrait (face detection), and distance between subjects. Then, the setting values of the high frequency band, the middle frequency band, and the low frequency band corresponding to the setting value are also set (see FIG. 2).

For example, as shown in FIG. 2, when the automatic setting button 340 is pressed, the set value for quick edge enhancement is set to "-1" if the image is a bust-up portrait, and "-1" if the image is a snapshot. is "0", and "+1" if the image is landscape. Such automatic setting can be realized, for example, by referring to a table (not shown) that associates image features or shooting scenes with quick edge enhancement setting values. Also, the set value for such quick edge enhancement may be changeable according to the shutter speed (exposure time) or the F-number of the lens, for example, even for the same shooting scene.

<Example of outline enhancement for each display magnification>
Here, an example of edge enhancement for each display magnification of an image will be shown.

4 to 6 are explanatory diagrams showing examples 1 to 3 of quick edge enhancement for each display magnification. FIG. 4 shows an example in which the set value for quick edge enhancement is set to "+2", FIG. 5 shows an example in which the set value for quick edge enhancement is set to "0", and FIG. is set to "-2". 4 to 6, (A) is a display magnification of 1:1 (100%), (B) is a display magnification of 50%, and (C) is a display magnification of 20%.

In this way, by adjusting the setting value of the quick edge enhancement, the edge component can be emphasized or weakened independently of the display magnification. Similar resolution can be obtained with (A) to (C). Therefore, since the user does not need to individually adjust the set values of the first to third edge enhancement, the set values of the first to third edge enhancement can be easily set without trial and error. Settings can be made.

<Hardware Configuration Example of Imaging Device>
FIG. 7 is a block diagram showing a hardware configuration example of an imaging device. The imaging device 700 is a device capable of capturing still images or moving images, and specifically includes, for example, a digital camera, a digital video camera, a smart phone, a tablet, a personal computer, and a game machine. In FIG. 7, a digital camera will be described as an example of an imaging device.

The imaging apparatus 700 includes a processor 701 , a storage device 702 , a driving unit 703 , an optical system 704 , an imaging device 705 , an AFE (Analog Front End) 706 , an LSI (Large Scale Integration) 707 , and an operation device 708 . , a sensor 709 , a display device 710 , a communication IF (Interface) 711 and a bus 712 . The processor 701 , storage device 702 , drive unit 703 , LSI 707 , operation device 708 , sensor 709 , display device 710 and communication IF 711 are connected to bus 712 .

A processor 701 controls the imaging device 700 . A storage device 702 serves as a work area for the processor 701 . Also, the storage device 702 is a non-temporary or temporary recording medium that stores various programs and data. Examples of the storage device 702 include ROM (Read Only Memory), RAM (Random Access Memory), HDD (Hard Disk Drive), and flash memory. A plurality of storage devices 702 may be mounted in the imaging device 700 , and at least one of them may be detachable from the imaging device 700 .

A driving unit 703 drives and controls the optical system 704 . The drive unit 703 has a drive circuit 703a and a drive source 703b. The driving circuit 703 a controls the driving source 703 b according to instructions from the processor 701 . The drive source 703b is, for example, a motor, and controls the zooming lens 741b and the focusing lens 741c in the optical system 704 in the optical axis direction and controls the opening and closing of the diaphragm 742 under the control of the drive circuit 703a.

The optical system 704 includes a plurality of lenses (a lens 741a, a zooming lens 741b, and a focusing lens 741c) arranged in the optical axis direction, and a diaphragm 742. An optical system 704 collects subject light and emits it to an image sensor 705 .

The imaging device 705 receives subject light from the optical system 704 and converts it into an electrical signal. The imaging device 705 may be, for example, an XY addressing solid-state imaging device (eg, CMOS (Complementary Metal-Oxide Semiconductor)) or a progressive scanning solid-state imaging device (eg, CCD (Charge Coupled Device)). There may be.

A plurality of light receiving elements (pixels) are arranged in a matrix on the light receiving surface of the imaging element 705 . A plurality of types of color filters that transmit light of different color components are arranged in the pixels of the image sensor 705 according to a predetermined color arrangement (eg, Bayer arrangement). Therefore, each pixel of the image sensor 705 outputs an analog electrical signal corresponding to each color component through color separation by the color filter.

An AFE 706 is an analog front-end circuit that performs signal processing on analog electric signals from the image sensor 705 . The AFE 706 sequentially executes electrical signal gain adjustment, analog signal processing (correlated double sampling, black level correction, etc.), A/D conversion processing, and digital signal processing (defective pixel correction, etc.) to generate RAW image data. , to the LSI. The drive unit 703 , optical system 704 , imaging device 705 and AFE 706 described above constitute an imaging unit 720 .

The LSI 707 executes specific processing such as image processing such as color interpolation, white balance adjustment, contour enhancement, gamma correction, and gradation conversion, encoding processing, decoding processing, and compression/expansion processing on the RAW image data from the AFE 706. It is an integrated circuit. Specifically, the LSI 707 may be implemented by a PLD (Programmable Logic Device) such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field-Programmable Gate Array).

The operation device 708 inputs commands and data. The operation device 708 includes, for example, various buttons including a release button, switches, dials, and touch panels. A sensor is a device that detects information, and includes, for example, an AF (Automatic Focus) sensor, an AE (Automatic Exposure) sensor, a gyro sensor, an acceleration sensor, a temperature sensor, and the like. A display device 710 displays image data and the setting screen 300 . Display devices 710 include a rear monitor at the rear of imaging device 700 and an electronic viewfinder. Communication IF 711 connects to a network and transmits and receives data.

<Example of Functional Configuration of Imaging Device>
FIG. 8 is a block diagram of a functional configuration example of the imaging device 700 according to the first embodiment. The imaging device 700 is composed of an imaging unit 720 and an image processing device 800 . The image processing apparatus 800 has a storage unit 801 , an acquisition unit 802 , a generation unit 803 , a setting unit 804 , a correction unit 805 and a display unit 806 .

Acquisition unit 802, generation unit 803, setting unit 804, and correction unit 805 are realized, for example, by causing a processor to execute a program stored in storage device 702 shown in FIG. be done. The storage unit 801 is implemented by the storage device 702 shown in FIG. Display unit 806 is implemented by display device 710 and LSI 707 shown in FIG.

The acquisition unit 802 acquires image data from the imaging unit 720 or the generation unit 803 and stores it in the storage unit 801 . The image data acquired from the imaging unit 720 is, for example, RAW image data. The image data acquired from the generation unit 803 may be image data that has undergone image processing such as color interpolation, white balance adjustment, edge enhancement, gamma correction, and gradation conversion by the LSI 707, or may be, for example, JPEG format. image data compressed to . Further, the image data may be still image data or image data generated by shooting a moving image. Further, the image data may be a display image generated based on data continuously (successively) output from the imaging unit 720, that is, image data obtained as so-called through image data.

The generation unit 803 performs image processing such as color interpolation, white balance adjustment, edge enhancement, gamma correction, and gradation conversion on the RAW image data acquired from the imaging unit 720 by the acquisition unit 802 to generate image data. do. Also, RAW image data or image-processed image data is compressed into JPEG format to generate image data. The generation unit 803 returns the generated image data to the acquisition unit 802 .

The setting unit 804 can independently set correction information for each of the contour component of the first spatial frequency band, the contour component of the second spatial frequency band, and the contour component of the third spatial frequency band. Here, the first spatial frequency band is, for example, the high frequency band described above. The second spatial frequency band is a spatial frequency band including a second spatial frequency lower than the first spatial frequency within the first spatial frequency band.

Specifically, for example, the second spatial frequency band is a medium frequency band including a second spatial frequency lower than the first spatial frequency within the high frequency band. The third spatial frequency band is a spatial frequency band including third spatial frequencies lower than the second spatial frequency. Specifically, for example, the third spatial frequency band is a low frequency band including a third spatial frequency lower than the second spatial frequency.

The correction information is information necessary for correcting each of the contour component of the first spatial frequency band, the contour component of the second spatial frequency band, and the contour component of the third spatial frequency band. Specifically, for example, the correction information is the degree of emphasis (the value of the vertical axis 111) for the contour components of the high frequency band, the middle frequency band, and the low frequency band shown in FIG. It is a setting value of the first edge enhancement, the second edge enhancement, and the third edge enhancement corresponding to the enhancement degree.

The setting unit 804 can set the setting values of the first edge enhancement, the second edge enhancement, and the third edge enhancement independently, that is, individually, by the operation described with reference to FIG. 3, for example. In addition, the setting unit 804 collectively sets the setting values of the first edge enhancement, the second edge enhancement, and the third edge enhancement by pointing the set value of the bar with the quick edge enhancement slider by selecting the quick edge enhancement. You can also As a result, user convenience can be improved.

A correction unit 805 corrects the image data based on each correction information set by the setting unit 804 . Specifically, for example, the correction unit 805 executes the edge enhancement process using the set values of the first edge enhancement, the second edge enhancement, and the third edge enhancement set by the setting unit 804 .

Note that the setting values for quick edge enhancement, first edge enhancement, second edge enhancement, and third edge enhancement may be held for each image data. For example, when the sliders 330 to 333 indicate "1", "4", "3.5", and "2" for certain image data, switching to other image data or other processing, The setting unit 804 holds the setting values “1”, “4”, “3.5”, and “2” in association with the certain image data. Then, when this image data is called again, the setting unit 804 may read and set the held setting values "1", "4", "3.5", and "2". As a result, the previous set value can be reproduced, and the convenience can be improved.

Further, in the first edge enhancement, the correction unit 805 adjusts the values in the sharpening filter with the setting value of the first edge enhancement, for example, and corrects the image data using the adjusted sharpening filter. Further, in the second edge enhancement, for example, the correction unit 805 adjusts the range of the middle frequency band with the setting value of the second edge emphasis, and corrects the image data using a bandpass filter that passes the adjusted middle frequency band. do.

Further, in the third edge enhancement, the correction unit 805 adjusts the range of the low frequency band with the setting value of the third edge enhancement, for example, and corrects the image data using a low-pass filter that passes the adjusted low frequency band. . Although a sharpening filter, a band-pass filter, and a low-pass filter have been described here, other filters may be used as long as they are applicable to each spatial frequency band.

Note that the correction unit 805 may apply the setting value set by the setting unit 804 to the image data after shooting, or may apply the setting value to the image data before shooting, that is, the through image data. may also apply. In this case, the combination of setting values of the first edge enhancement to the third edge enhancement set by the quick edge enhancement does not depend on the display magnification that changes by zooming in or out. There is no need to change the set values for edge enhancement to third edge enhancement.

The display unit 806 displays the setting screen 300 ( FIG. 2 ) that can be set by the setting unit 804 on the display device 710 . Also, the display unit 806 displays an image of the image data on the display device 710 based on the image data corrected by the correction unit 805 . As a result, the images shown in FIGS. 4 to 6 are displayed.

<Example of outline enhancement processing procedure>
FIG. 9 is a flowchart illustrating an example of an edge enhancement processing procedure according to the first embodiment; When the acquisition unit 802 acquires image data from the imaging unit 720 or the generation unit 803 (step S901), the imaging device 700 stores the data in the storage unit 801 (step S902). In the image processing apparatus 800, when the quick edge enhancement selection button 310 is selected from the setting screen 300 in FIG. (step S912).

Then, the image processing apparatus 800 reads out the image data from the storage unit 801, and the correction unit 805 performs correction based on quick edge enhancement on the image data (step S913). Thereafter, the image processing apparatus 800 causes the display unit 806 to display the image of the corrected image data on the display device 710 (step S914). This completes a series of contour enhancement processing.

Thus, according to the first embodiment, the second edge enhancement for the middle frequency band between the high frequency band and the low frequency band is performed for the first edge enhancement for the high frequency band and the low frequency band for the low frequency band. It can be set independently of the third edge emphasis. Each of the three values set by quick edge enhancement is set so that the sense of resolution does not change at any display magnification of the image. Therefore, a favorable sense of resolution can be obtained at any display magnification. Therefore, since the contour components of the three spatial frequency bands are appropriately emphasized, the contour components of the object having a wide range of spatial frequencies in the image can be emphasized. Regardless of the display magnification of the image, the contour component of the subject in the image is emphasized, in other words, the contour component can be corrected to an image in which the contour component is conspicuously visible (so-called sharp image).

In addition, by setting the quick edge enhancement, the first to third edge enhancement can be set all at once, so even users with little knowledge of photography can quickly perform corrections that change the sense of image resolution. It is possible to improve convenience.

Example 2 will be described. In the first embodiment, an example of setting each setting value for the first edge enhancement to the third edge enhancement has been described, but in the second embodiment, an example in which the setting value of the edge enhancement can be set depending on the display magnification is described. explain.

Since each of the first edge enhancement to the third edge enhancement has a display magnification at which a preferable sense of resolution is likely to be obtained, in the second embodiment, when the display magnification of the image is detected, the imaging apparatus 700 detects the detected The optimal edge enhancement for the selected display magnification is selected, and the setting value for the selected edge enhancement is enabled. As a result, the user can obtain a favorable sense of resolution by moving the slider for the selected edge enhancement without going through trial and error as to which edge enhancement to apply.

In addition, in the second embodiment, the description will focus on the differences from the first embodiment, and the same reference numerals will be used for the common points with the first embodiment, and the description thereof will be omitted.

<Example of outline enhancement processing procedure>
FIG. 10 is a flowchart illustrating an example of an edge enhancement process procedure according to the second embodiment. The image processing apparatus 800 causes the display unit 806 to read the image data from the storage unit 801 and display the image (step S1011). The image processing apparatus 800 detects the display magnification of the image being displayed by the display unit 806 (step S1012). The image processing apparatus 800 uses the setting unit 804 to select edge enhancement based on the detected display magnification (step S1013). For example, the image processing device 800 performs the first edge enhancement when the display magnification is 50% or more, the second edge enhancement when the display magnification is 25% or more and less than 50%, and the third edge enhancement when the display magnification is less than 25%. Select edge enhancement.

Next, when the image processing apparatus 800 sets the setting value for the selected edge enhancement at the position of the selected edge enhancement slider in step S1013 (step S1014), the correction unit 805 performs correction based on the selected edge enhancement on the image data. (step S1015). Thereafter, the image processing apparatus 800 causes the display unit 806 to display the image of the corrected image data on the display device 710 (step S1016). This completes a series of contour enhancement processing.

As described above, according to the second embodiment, the user can obtain a desired sense of resolution by moving the sliders 331 to 333 for the selected edge enhancement without trial and error as to which edge enhancement is to be applied. can be obtained.

In the second embodiment, the setting value for any one of the first edge enhancement to the third edge enhancement can be set based on the display magnification. If the display magnification is such that a suitable sense of resolution can be obtained even in , the setting values for the two contour enhancements may be settable. For example, when the display magnification is 50%, the imaging device 700 can set the set values for the first edge enhancement and the second edge enhancement, and when the display magnification is 25%, the imaging device 700 , second edge enhancement and third edge enhancement setting values may be settable.

This allows the user to increase the degree of freedom in setting the edge enhancement without trial and error as to which edge enhancement is to be applied. You can get a sense of resolution.

Example 3 will be described. In Embodiments 1 and 2, the example in which the image of the image data corrected by the correction unit 805 is displayed on the display unit 806 has been described. In the third embodiment, the imaging apparatus 700 corrects the image data by changing the set value of edge enhancement according to the destination. The imaging device 700 transmits the corrected image data to the destination, and the destination outputs the image data. This makes it possible to output an image suitable for the destination. Also in the third embodiment, it is possible to set the set value for quick edge enhancement without depending on the display magnification of the image.

Note that in the third embodiment, differences from the first embodiment will be mainly described, and the same reference numerals will be used for the common points with the first embodiment, and the description thereof will be omitted.

<Communication system>
FIG. 11 is an explanatory diagram showing an example of a communication system in which the imaging device 700 and the destination are communicably connected. Destinations include, for example, output devices such as a personal computer 1101, a smart phone 1102 (or a tablet), a printer 1103, a large printer 1104 (for example, a business printer). Note that the transmission to the destination may be transmission through a wired connection or wireless transmission.

<Setting information>
FIG. 12 is an explanatory diagram showing setting information. The setting information 200 and 1201 to 1203 are stored in the storage unit 801. FIG. The setting information 200, 1201 to 1203 have setting values for quick edge enhancement and first to third edge enhancement, respectively. Setting information 200 is applied, for example, when a personal computer is selected as a destination. The setting information 1201 is applied, for example, when a smartphone (or tablet) is selected as the destination.

Setting information 1202 is applied, for example, when a printer is selected as a destination. The setting information 1203 is applied, for example, when a large printer is selected as the destination. As a result, the image data can be corrected with the setting value suitable for the destination, and the image can be output with a sense of resolution suitable for the destination. When personal computers with different screen sizes are assumed, a plurality of types of setting information 200 may be prepared according to the screen sizes.

<Functional Configuration Example of Imaging Device 700>
FIG. 13 is a block diagram of a functional configuration example of an imaging device 700 according to the third embodiment. The imaging device 700 is composed of an imaging unit 720 and an image processing device 800 . The image processing apparatus 800 has a storage unit 801 , an acquisition unit 802 , a generation unit 803 , a setting unit 804 , a correction unit 805 , a display unit 806 , a selection unit 1302 and a transmission unit 1303 .

Specifically, selection unit 1302 is realized by causing processor 701 to execute a program stored in storage device 702 shown in FIG. 7 or by LSI 707, for example. Transmitter 1303 is specifically realized by communication IF 711 shown in FIG. 7, for example.

A selection unit 1302 selects a destination. Specifically, for example, the imaging device 700 causes the display device 710 to display a destination selection screen 1400, and the imaging device 700 accepts selection of a destination by the operation of the operation device 708 by the user.

FIG. 14 is an explanatory diagram showing an example of a destination selection screen 1400. As shown in FIG. A destination selection screen 1400 displays buttons 1401 to 1404 for selecting a personal computer 1101, a smart phone 1102, a printer 1103, and a large printer 1104. FIG. When the selection unit 1302 accepts selection of any one of the buttons 1401 to 1404, the selection unit 1302 reads the setting information corresponding to the selected button from the storage device 702 when the OK button 1405 is pressed. . In FIG. 14 , the setting unit 804 indicates that the setting information 1202 for the printer 1103 has been read from the storage device 702 by pressing the button 1403 for selecting the printer 1103 .

A setting unit 804 receives input of setting values (-2 to +2) for quick edge enhancement in the read setting information by user operation. As a result, the correction unit 805 can correct the image data using the first to third edge enhancement values in the quick edge enhancement setting values input in the read setting information. Note that if there is no quick edge enhancement setting value (-2 to +2) input, the correction unit 805 performs the first to third edge enhancement at the default quick edge enhancement setting value "0". The values will be used to correct the image data. It should be noted that the user may change the setting values for the read setting information before correction.

Returning to FIG. 13 , the transmission unit 1303 transmits the image data corrected by the correction unit 805 to the destination selected by the selection unit 1302 . In the example of FIG. 14, since the setting information 1202 is read and the image data is corrected, the transmission unit 1303 sends the corrected image data using the setting information 1202 to the printer 1103 selected as the destination. Send. Accordingly, the corrected image data suitable for the destination can be output at the destination.

<Example of outline enhancement processing procedure>
FIG. 15 is a flowchart of a contour enhancement process procedure example 1 according to the third embodiment. Edge enhancement processing procedure example 1 is an example of the edge enhancement processing procedure in the case of selecting a transmission destination before correcting image data. The image processing apparatus 800 accepts the selection of the destination by the selection unit 1302 (step S1511), and reads the setting information corresponding to the selected destination from the storage unit 801 (step S1512).

After that, the image processing apparatus 800 executes steps S911 to S913 using the read setting information. The image processing apparatus 800 then transmits the image data corrected in step S913 (corrected image data) to the destination selected in step S1511 (step S1513).

The destination receives the corrected image data (step S1521) and executes output processing based on the corrected image data (step S1522). This completes a series of contour enhancement processing. The output processing based on the corrected image data is, for example, image display of the corrected image data when the destination is the personal computer 1101 or the smartphone 1102, and image display when the destination is the printer 1103 or the large-sized printer 1104. , are printouts of corrected image data. As a result, an image with a sense of resolution suitable for the destination can be output at the destination.

FIG. 16 is a flowchart of an edge enhancement process procedure example 2 according to the third embodiment. Edge enhancement processing procedure example 2 is an edge enhancement processing procedure example in the case of selecting a transmission destination after image data correction. The imaging apparatus 700 generates a plurality of JPEG image data for the transmission destination from the RAW image data by the generation unit 803, acquires the generated plurality of JPEG image data by the acquisition unit 802 (step S1601), and stores the data in the storage device 702. (step S1602).

Prior to destination selection (step S1511), the image processing apparatus 800 executes steps S911 to S913 for each setting information corresponding to each destination. Specifically, for example, when the user moves the slider 330 on the quick contour enhancement bar 320 (step S911), the setting unit 804 sets the first contour for each of the setting information 1201 to 1203 corresponding to the destination. A combination of setting values for enhancement to third edge enhancement is specified (step S912).

Then, the correction unit 805 performs correction based on quick edge enhancement on each of the generated JPEG image data for each of the setting information 1201 to 1203 corresponding to the destination (step S913). Thereby, the image processing apparatus 800 obtains post-correction image data for each destination.

After that, the image processing apparatus 800 accepts the selection of the transmission destination from the user (step S1511), and selects the corrected image data of the transmission destination selected from the plurality of corrected image data. It is transmitted to the destination (step S1513).

As described above, in outline enhancement processing procedure example 2, when an image of a subject is captured in a situation in which a destination has not yet been selected, outline enhancement processing suitable for each destination can be performed in advance. , the corrected image data can be sent immediately to any destination selected thereafter. Therefore, even if it becomes clear after photographing that the user has forgotten to select a transmission destination, the user can transmit appropriately corrected image data to the transmission destination. Therefore, it is possible to eliminate the trouble of selecting a transmission destination before photographing and re-photographing, thereby improving convenience.

Example 4 will be described. In the third embodiment, an example of transmitting the image data corrected by the correction unit 805 inside the imaging apparatus 700 to the transmission destination has been described. In the fourth embodiment, the imaging apparatus 700 without the correction unit 805 is provided with the correction unit 805 for combining the setting values of the first edge enhancement to the third edge enhancement set according to the destination and the image data. This is an example of sending to a destination. Also in the fourth embodiment, the set value for quick edge enhancement can be set without depending on the display magnification of the image.

In addition, in the fourth embodiment, the description will focus on the differences from the third embodiment, and the same reference numerals will be used for the common points with the third embodiment, and the description thereof will be omitted.

<Functional configuration example>
FIG. 17 is a block diagram of a functional configuration example of an imaging device 700 according to the fourth embodiment. The imaging device 700 does not have the correction unit 805 . Also, since there is no correction unit 805 , an apparatus including the storage unit 801 , acquisition unit 802 , generation unit 803 , setting unit 804 , display unit 806 , selection unit 1302 , and transmission unit 1303 is assumed to be an information processing apparatus 1700 .

<Example of information processing procedure>
FIG. 18 is a flowchart of an information processing procedure example 1 according to the fourth embodiment. The information processing procedure example 1 is an information processing procedure example in the case of selecting a transmission destination before setting quick edge enhancement. The information processing apparatus 1700 executes steps S1511, S1512, S911, and S912 in the same manner as the image processing apparatus 800 in FIG. 15 except for correction based on quick edge enhancement (step S913). After executing step S912, the information processing apparatus 1700 sends the combination of setting values for the first to third edge enhancement specified in step S912 and the image data to be corrected to the transmission selected in step S1511. It is transmitted first (step S1813).

When the destination receives the combination of setting values and the image data from the information processing apparatus 1700 (step S1821), the correcting unit 805 performs correction based on the quick edge enhancement on the image data using the combination of setting values. (step S1822). Then, the destination executes output processing based on the corrected image data (step S1522), and a series of information processing ends. As a result, an image with a sense of resolution suitable for the destination can be output at the destination.

FIG. 19 is a flowchart of an information processing procedure example 2 according to the fourth embodiment. Information processing procedure example 2 is an information processing procedure example in the case of selecting a transmission destination after setting quick edge enhancement. In FIG. 19, the information processing apparatus 1700 performs quick edge enhancement selection and setting (step S911) corresponding to the destination, and setting values for the first edge enhancement to the third edge enhancement before selecting the destination (step S1511). combination identification (step S912).

After that, when destination selection (step S1511) is executed, in step S1813, the information processing apparatus 1700 selects the first to third edge enhancements set according to the selected destination along with the image data. The combination of setting values is transmitted to the selected destination (step S1813).

As a result, when an image of the subject is captured in a situation in which no destination has been selected yet, by executing the outline enhancement settings that match the destination in advance for each destination, Also, the combination of setting values and the image data can be transmitted immediately.

Therefore, even if it becomes clear after photographing that the user forgot to select the destination, the user can transmit the properly set combination of setting values and the image data to the destination. Therefore, it is possible to eliminate the troublesomeness of selecting a transmission destination before photographing and retaking photographing, thereby improving convenience.

In the above-described fourth embodiment, the case where the correction unit 805 is not provided has been described. The processing of the fourth embodiment may be executed when the remaining battery level becomes equal to or less than a predetermined amount.

Example 5 will be described. In the fifth embodiment, a subject area in image data is recognized and the image data is divided into areas. Then, the imaging device 700 determines a spatial frequency band for contour enhancement for each divided region. For example, face image data includes image data of high frequency components such as eyes and eyelashes and image data of low frequency components such as cheeks.

When contour enhancement of high-frequency components is performed on an image, the contour components of the eyes and eyelashes are emphasized and a suitable sense of resolution is obtained. Wrinkles and roughness are conspicuous. In addition, when contour enhancement of low-frequency components is performed on an image, the three-dimensional effect of the skin on the cheeks is appropriately approximated. It becomes blurred, and it is difficult to obtain a suitable sense of resolution.

For this reason, by referring to the features of the image data in the divided regions and performing contour enhancement in an appropriate spatial frequency band for each region, contour enhancement that provides a favorable sense of resolution for the entire image data is realized. . Also in the fifth embodiment, the setting value for quick edge enhancement can be set without depending on the display magnification of the image.

In the fifth embodiment, the first embodiment is used as a base, and the differences from the first embodiment will be mainly described. Also, the fifth embodiment can be applied to the third and fourth embodiments as long as there is no contradiction in the processing contents. In particular, in the fourth embodiment, since the destination performs correction, the fifth embodiment can be applied to the information processing apparatus 1700 for settings before correction, and the fifth embodiment can be applied to the destination for correction. It is possible.

<Example of outline enhancement of divided area>
FIG. 20 is an explanatory diagram showing an example of outline enhancement of a divided area. In FIG. 20, image data 2000 of a portrait photograph will be described as an example of image data. The image data 2000 includes subject image data 2001 and background image data 2002 . Here, the subject is a bust-up portrait of a woman, and the background is almost a single color.

Since the divided region 2011A is a high-frequency component image region including eyelashes, the image processing apparatus 800 applies the first edge enhancement to the divided region 2011A. The set value for the first edge enhancement may be set to a positive value by the user operating the slider, or may be set to a preset positive value (for example, +4). When the first edge enhancement is applied to the divided area 2011A, a corrected divided area 2011B is obtained. The eyelashes in the divided region 2011B are images with higher resolution in which contour components are emphasized compared to the eyelashes in the divided region 2011A.

Also, since the divided region 2012A is an image region of low-frequency components including cheeks, the image processing apparatus 800 applies the third edge enhancement to the divided region 2012A. The setting value for the third edge enhancement may be set to a negative value by the user by operating the slider, or may be set to a preset negative setting value (eg, -1). When the third edge enhancement is applied to the divided area 2012A, a corrected divided area 2012B is obtained. The cheeks of the divided region 2012B have weaker outline components than those of the divided region 2012A, and a suitable three-dimensional effect of the skin can be obtained.

<Functional Configuration Example of Imaging Device 700>
FIG. 21 is a block diagram of a functional configuration example of an imaging device 700 according to the fifth embodiment. 21, the image processing apparatus 800 has a dividing section 2100 in the configuration of FIG. Dividing unit 2100 is specifically realized by causing processor 701 to execute a program stored in storage device 702 shown in FIG. 7 or by LSI 707, for example.

A dividing unit 2100 divides image data into a plurality of image regions. Specifically, for example, the dividing unit 2100 has a face detection function, and for an image region in which a face has been detected, further divides the image region of the face into features such as eyes, eyelashes, ears, nose, mouth, and so on. Segmented regions are generated by subdividing facial parts such as cheeks. Thereby, the setting unit 804 sets the set value for any one of the first edge enhancement to the third edge enhancement according to the feature of the image data in each divided area, regardless of the display magnification.

The dividing unit 2100 also has a subject detection function, and for example, detects a motion vector from the difference between the successively recorded live view image data and moving image frames and the preceding frame, and identifies the image data of the subject. . Then, the dividing unit 2100 divides the image into an image area including the boundary between the subject and the background and an image area not including the boundary. Thereby, the setting unit 804 sets the set value for any one of the first edge enhancement to the third edge enhancement according to the characteristics of the image data in each divided area, regardless of the display magnification.

<Example of outline enhancement processing procedure>
FIG. 22 is a flowchart illustrating an example of an edge enhancement processing procedure according to the fifth embodiment; The image processing apparatus 800 divides the image data into areas by performing face detection and subject detection on the image data using the division unit 2100 (step S2211). Next, the image processing apparatus 800 uses the setting unit 804 to perform edge enhancement setting for each divided area based on the characteristics of the image data in the divided area (step S2212).

Specifically, for example, as described above, if the image data in the divided area is image data of eyes or eyelashes, the setting value is set to the first edge enhancement set value, and if it is image data of cheeks, the third edge enhancement setting value is set. Set to the outline emphasis setting value. Then, the image processing apparatus 800 causes the correction unit 805 to perform edge enhancement-based correction on each of the divided regions using the setting values set in step S2212 (step S2213). Then, the image processing apparatus 800 causes the display unit 806 to display the image of the image data after the correction in step S2213 on the display device 710 (step S2213). This completes a series of contour enhancement processing.

In this manner, edge enhancement can be set independently for each divided area according to the characteristics of the image data in the divided area, and an image with a suitable sense of resolution can be output. Note that when the fifth embodiment is applied to the third and fourth embodiments, the setting values of the first edge enhancement to the third edge enhancement in the setting information corresponding to the destination are used to set the edge enhancement for each divided area. to set the value.

[Other examples]
In the first to fifth embodiments described above, as an example of correction, edge enhancement processing for enhancing or weakening edge components of an image has been described. It may also be applied to noise reduction processing for each image. In this case, noise is reduced as the set value increases. The noise reduction process may be replaced with the edge enhancement process of the first to fifth embodiments, or may be used together with the edge enhancement process.

(1) As described above, according to this embodiment, the image processing apparatus 800 can independently set correction information relating to edge enhancement processing and noise reduction processing for each of three or more spatial frequency bands. It has a setting unit 804 . This allows the user to appropriately adjust the contour components and noise of the image. In other words, it is possible to emphasize contour components of a subject with a wide range of spatial frequencies in the image and reduce noise. In this way, in order to appropriately emphasize each of the three spatial frequency bands, the contour component of the subject in the image is emphasized at any display magnification, in other words, the contour can be seen conspicuously and clearly. The image (so-called sharp image) is corrected. In addition, noise reduction corrects the image to an image in which the noise of the object in the image is reduced regardless of the display magnification of the image. In this manner, since the contour components of the three spatial frequency bands are adjusted appropriately, the intensity of the contour components of the subject having a wide range of spatial frequencies in the image can be adjusted.

In general edge enhancement processing and noise reduction processing, the processing given to the image does not change, but when the display magnification changes, the impression received by humans changes. For example, in the case of edge enhancement processing, edge enhancement processing that adjusts high-frequency components tends to provide a favorable sense of resolution in high-magnification display. On the other hand, in low-magnification display, contour enhancement processing that adjusts low-frequency components is more likely to provide a better sense of resolution than contour enhancement processing that adjusts high-frequency components. Therefore, the degree of freedom of adjustment is increased by making it possible to independently set the correction information for the second frequency band.

(2) In the image processing apparatus 800 of (1) above, the setting unit 804 may set each piece of correction information based on the display magnification of the image to be displayed. Accordingly, correction suitable for the display magnification of the image can be performed.

(3) In the image processing device 800 of (2) above, the setting unit 804 selects a specific spatial frequency among the first spatial frequency band, the second spatial frequency band, and the third spatial frequency band based on the display magnification. Each correction information may be set for each band. Thereby, a spatial frequency band suitable for the display magnification can be selected.

(4) In the image processing apparatus 800 of (1) above, the setting unit 804 may set each piece of correction information based on the shooting scene of the subject. As a result, it is possible to adjust the spatial frequency band suitable for the shooting scene.

(5) In the image processing apparatus 800 of (1) above, the setting unit 804 may set each piece of correction information based on the recognition result of the subject. Thereby, the spatial frequency band suitable for the subject can be adjusted.

(6) The image processing apparatus 800 of (5) above has a dividing unit 2100 that divides the image of the subject into a plurality of regions based on the recognition result. Each piece of correction information may be set for each region that is marked. As a result, the spatial frequency band suitable for the image in each region can be adjusted.

(7) In the image processing apparatus 800 of (1) above, the correction information includes information for adjusting the contour component of the image data (for example, a setting value for contour enhancement), and the correction unit 805 adds Based on this, edge enhancement processing may be performed on the image data. This makes it possible to independently set each piece of correction information for contour components in three or more spatial frequency bands.

(8) In the image processing device 800 of (7) above, the edge enhancement process may include a process of weakening the edge component. As a result, a wide range of adjustments can be made, from processing that emphasizes contour components to processing that weakens them.

(9) In the image processing apparatus 800 of (1) above, the correction information includes information for adjusting noise reduction processing of image data (for example, a set value for noise reduction), and the correction unit 805 receives each correction information Noise reduction processing may be performed on the image data based on. This makes it possible to independently set each piece of correction information relating to noise reduction in three or more spatial frequency bands.

(10) In the image processing apparatus 800 of (1) above, the setting unit 804 may collectively set each piece of correction information. Thereby, each correction information of three or more spatial frequency bands can be collectively set immediately.

(11) In the image processing apparatus 800 of (10) above, the setting unit 804 displays on the display screen a specified range in which specific correction information linked with each correction information can be specified, and When correction information is designated, each correction information may be set collectively. As a result, it is possible to improve convenience during correction.

(12) The image processing apparatus 800 of (1) above has a selection unit 1302 that selects a destination, and the setting unit 804 performs each correction based on the specific destination selected by the selection unit 1302. information can be set. Thereby, it is possible to adjust the spatial frequency band suitable for the transmission destination.

(13) Further, the image processing apparatus 800 of (12) above may include a transmission unit 1303 that transmits the corrected image data corrected by the correction unit 805 to a specific destination. This makes it possible to send image data whose spatial frequency band has been adjusted to suit the destination, and to output an image suitable for the destination at the destination.

(14) The image processing apparatus 800 of (12) above includes a generation unit 803 that generates image data for each of a plurality of destinations, a transmission unit 1303 that transmits the image data generated by the generation unit 803, A setting unit 804 sets each correction information based on each of the plurality of transmission destinations of the image data, and a correction unit 805 sets each of the image data of each of the plurality of transmission destinations. , and the transmission unit 1303 sends the corrected image data for a specific destination out of the plurality of image data corrected by the correction unit 805 to the specific destination. may be sent to As a result, image data can be corrected for each destination while a specific destination is not selected, and convenience can be improved.

(15) In addition, the information processing apparatus 1700 includes a setting unit 804 that enables independent setting of correction information relating to edge enhancement processing and noise reduction processing for three or more spatial frequency bands, and A transmission unit 1303 that transmits each piece of correction information and image data to be corrected using each piece of correction information to a transmission destination. This allows the user to appropriately set edge enhancement processing and noise reduction processing for an image.

In addition, the present invention is not limited to the above contents, and may be arbitrarily combined. Other aspects conceivable within the scope of the technical idea of the present invention are also included in the scope of the present invention.

101 to 104 graphs 200 1201 to 1203 setting information 300 setting screen 700 imaging device 701 processor 702 storage device 705 imaging device 708 operation device 710 display device 720 imaging unit 800 image processing device 801 Storage unit 802 Acquisition unit 803 Generation unit 804 Setting unit 805 Correction unit 806 Display unit 1302 Selection unit 1303 Transmission unit 1700 Information processing device 2100 Division unit

Claims (4)

A second spatial frequency band that includes a contour component of a first spatial frequency band, a second spatial frequency that is lower than the first spatial frequency in the first spatial frequency band, and partially overlaps with the first spatial frequency band each correction information for each of contour components and contour components of a third spatial frequency band that includes a third spatial frequency lower than the second spatial frequency and partially overlaps with the second spatial frequency band; a setting unit for setting each correction information based on the display magnification of an image to be displayed ;
a correction unit that corrects image data based on each correction information set by the setting unit;
An image processing device having The image processing device according to claim 1,
The image processing device, wherein the setting unit sets each correction information for a specific spatial frequency band based on the magnification among the first spatial frequency band, the second spatial frequency band, and the third spatial frequency band. . an imaging unit that captures an image of a subject;
A second spatial frequency band that includes a contour component of a first spatial frequency band, a second spatial frequency that is lower than the first spatial frequency in the first spatial frequency band, and partially overlaps with the first spatial frequency band each correction information for each of contour components and contour components of a third spatial frequency band that includes a third spatial frequency lower than the second spatial frequency and partially overlaps with the second spatial frequency band; a setting unit for setting each correction information based on the display magnification of an image to be displayed ;
a correction unit that corrects the image data output from the imaging unit based on each correction information set by the setting unit;
An imaging device having of a second spatial frequency band that includes a contour component of a first spatial frequency band, a second spatial frequency that is lower than the first spatial frequency in the first spatial frequency band, and partially overlaps with the first spatial frequency band independently correcting information for each of contour components and contour components of a third spatial frequency band that includes a third spatial frequency lower than the second spatial frequency and partially overlaps with the second spatial frequency band; A setting process for setting each correction information based on a display magnification of an image to be displayed, which can be set;
a correction process for correcting image data based on each correction information set by the setting process;
image processing program that causes the processor to execute

Images