JP2013179550A - Image processing device, imaging device, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently generate an image beautifully showing a subject.SOLUTION: An image processing device comprises: a face detection unit that detects a face area from an image; an application amount setting unit that sets an application amount of correction processing on the face area on the basis of an analysis result of the face area detected by the face detection unit; and an image processing unit that performs the correction processing on the face area with the application amount set by the application amount setting unit.

Description

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

  2. Description of the Related Art Conventionally, a digital camera that generates an image that makes a subject look beautiful by correcting a captured image is known. For example, the digital camera disclosed in Patent Document 1 performs correction for enlarging the pupil of a subject in an image and correction for smoothing the skin.

JP 2005-159561 A

  However, since the digital camera of Patent Document 1 performs correction at a uniform rate regardless of the state of each individual subject, it has to be corrected many times depending on the subject, and is inefficient.

  Accordingly, an object of the image processing apparatus, digital camera, and program of the present invention is to efficiently generate an image that makes a subject look beautiful.

  The image processing apparatus according to the present invention sets a face detection unit that detects a face region from an image, and an amount of correction processing applied to the face region based on an analysis result of the face region detected by the face detection unit. An application amount setting unit; and an image processing unit that performs correction processing on the face area with the application amount set by the application amount setting unit.

  The application amount setting unit sets an enlargement magnification for the eye region based on a measurement result obtained by measuring the size of the eye region in the face region, and the image processing unit is set by the application amount setting unit. The eye area may be enlarged at the enlarged magnification.

  Further, the application amount setting unit sets at least one correction amount of exposure correction, saturation correction, and smoothing correction for the face region based on a determination result of determining the skin state in the face region. The image processing unit may perform at least one of exposure correction, saturation correction, and smoothing correction on the face area with the correction amount set by the application amount setting unit.

  Further, based on an analysis result of the face area detected by the face detection unit, an allowable range setting unit that sets an allowable range of the correction amount, and an operation unit that changes the application amount at least within the allowable range; May be provided.

  Moreover, you may provide the warning part which issues a warning, when the said application amount changed by the said operation part exceeds the upper limit of the said tolerance | permissible_range.

  In addition, the image processing apparatus includes a display unit that displays the image subjected to the correction process, and the application amount setting unit has a correction amount that is larger than the correction amount based on the analysis result when the display unit has a predetermined size or less. May be set.

  The imaging device of the present invention includes the above-described image processing device and an imaging unit that acquires the image.

  The image processing program of the present invention sets the amount of correction processing applied to the face area based on a face detection process for detecting a face area from an image and the analysis result of the face area detected by the face detection unit. An application amount setting step and an image processing step of performing correction processing on the face area with the application amount set in the application amount setting step are realized by a computer.

  According to the image processing device, the imaging device, and the program of the present invention, it is possible to efficiently generate an image that makes a subject look beautiful.

1 is a block diagram illustrating a configuration of an imaging device 10 according to a first embodiment. It is a flowchart which shows the flow of eye area expansion mode. This is an example of an image in which an eye area is enlarged, a bar 30, a cursor 31, and an item 32 of “decision”. It is a flowchart which shows the flow of the skin area | region correction mode. It is a flowchart which shows the flow of the skin area | region correction mode. (A) It is an example of the warning displayed on the display part 16. FIG. (B) It is an example of a part of enlarged image Pb. (C) It is an example of a part of the enlarged image Pc.

(First embodiment)
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram illustrating a configuration of an imaging apparatus 10 according to the first embodiment. As shown in FIG. 1, the imaging device 10 includes an imaging lens 11, an imaging device 12, an A / D conversion unit 13, a buffer memory 14, an image processing unit 15, a display unit 16, an operation unit 17, a flash RAM 18, a recording I / O. An F unit 19, a recording medium 20, a control unit 21, and a bus 22 are provided.

  The imaging lens 11 forms a subject image on the imaging surface of the imaging element 12. The imaging element 12 photoelectrically converts the subject light that has passed through the imaging lens 11 and outputs analog image signals corresponding to R, G, and B colors. An image signal output from the image sensor 12 is input to the A / D converter 13. The A / D converter 13 converts the analog image signal output from the image sensor 12 into a digital image signal. The digital image signals are collected into one frame and recorded in the buffer memory 14 as image data. The buffer memory 14 temporarily records image data in the pre-process and post-process of image processing by the image processing unit 15 described later.

  The image processing unit 15 performs image processing on the image data recorded in the buffer memory 14. Examples of the image processing include well-known white balance adjustment, color interpolation, gradation conversion processing, and contour enhancement processing. The image processing unit 15 also executes processing for compressing in JPEG (Joint Photographic Experts Group) format and the like, and processing for decompressing and restoring the compressed data.

  Further, the image processing unit 15 performs correction processing on a face area detected from an image acquired by imaging, an image recorded on the recording medium 20, or the like based on an application amount set by a setting unit 27 described later. Apply. For example, the correction process includes a process of enlarging the vertical width of the eye area and the entire pupil area with reference to the vertical width of the pupil area. Hereinafter, enlarging the vertical width of the eye region and the entire pupil region is referred to as “enlargement of the eye region”. Thereby, a preferable image in which the subject's eyes are emphasized can be obtained.

  The display unit 16 displays various images. The various images displayed on the display unit 16 are images acquired by imaging, menu images, images recorded on the recording medium 20 described later, and the like. The display unit 16 includes a touch panel 23. The touch panel 23 detects a position where a finger or a stylus is touched on the panel. The state of the touch panel 23 is detected by the control unit 21. The touch panel 23 is configured by a transparent panel having the same size as the display unit 16. Moreover, in the example of this embodiment, the touch panel 23 is comprised with the electrostatic capacitance type panel which senses the electrical signal by static electricity. Note that, not limited to the capacitance type, a resistance film type panel that detects a change in voltage due to pressure may be used.

  The operation unit 17 includes a release button 24, a cross key 25, and the like. The release button 24 is operated by the user during imaging. The cross key 25 is operated on the above menu image or the like. The state of the release button 24 and the cross key 25 is detected by the control unit 21, and a sequence based on the detected state of the button or key is executed. The flash RAM 18 stores firmware and the like. The recording I / F unit 19 includes a connector for connecting the recording medium 20. When the recording I / F unit 19 and the recording medium 20 are connected, data writing / reading is executed on the recording medium 20.

  The control unit 21 performs overall control of the imaging apparatus 10 according to a predetermined sequence program, and executes various calculations (AF, AE, etc.) necessary for imaging. The control unit 21 has functions such as a face detection unit 26 and a setting unit 27. The face detection unit 26 extracts feature points from an image acquired by imaging or an image recorded on the recording medium 20 to detect a face area, a face size, and the like. As a method for detecting the face area, a feature point extraction process described in JP-A-2001-16573 is cited. Examples of the feature points include eyebrow, eye, nose, and lip end points, face contour points, head apexes, and chin lower end points.

  The setting unit 27 analyzes the face area and sets the amount of correction processing applied to the face area. For example, the setting unit 27 measures the size of the eye region (vertical width of the pupil region) as the analysis of the face region. Then, the setting unit 27 sets the enlargement magnification according to the vertical width of the pupil region as the application amount. Table 1 is a table showing the magnification.

  As shown in Table 1, the magnification of the eye area is set to 12, 15, 17, 20, 22, 25%, etc., based on the vertical width of the original pupil area. For example, the setting unit 27 sets 15% when the vertical width of the pupil region is less than the threshold, and sets 10% when the vertical width of the pupil region is equal to or larger than the threshold. Note that the threshold value of the pupil region is statistically obtained in advance from the vertical width of the plurality of pupil regions.

  The image processing unit 15 automatically enlarges the eye area at the magnification set by the setting unit 27. When the user thinks that the eye area is not enlarged, the user can increase the enlargement magnification with a preset step width by touching the face area displayed on the display unit 16. For example, when the vertical width of the pupil region is less than the threshold value, the enlargement magnification is 17, 20, 22, 25%. Similarly, when the vertical width of the pupil region is equal to or greater than the threshold, the enlargement magnification is 12, 15, 17, 20, 22, 25%,.

  Further, if the eye area is enlarged too much, the balance of the entire image may be deteriorated or unnatural, so the upper limit value of the enlargement magnification is set according to the vertical width of the pupil area. For example, the upper limit of the enlargement magnification is 20% when the vertical width of the pupil region is less than the threshold, and 15% when the vertical width of the pupil region is equal to or greater than the threshold.

  The bus 22 connects the buffer memory 14, the image processing unit 15, the display unit 16, the recording I / F unit 19, and the control unit 21 to execute input / output of data and signals.

  The imaging apparatus 10 having the configuration described above has an “eye area expansion mode” for expanding the eye area of an image recorded on the recording medium 20.

  Next, the flow of the eye region enlargement mode will be described using the flowchart of FIG. Hereinafter, for convenience, an image including one person will be described as an example.

  Step S101 is processing for selecting an image to be enlarged. The control unit 21 selects an image to be subjected to eye region enlargement from an image recorded on the recording medium 20 according to a user designation via the touch panel 23.

  Step S102 is processing for setting an eye area enlargement mode.

  Step S103 is processing for setting an enlargement magnification. The control unit 21 reads the image selected in step S101 from the recording medium 20. Then, the face detection unit 26 detects a face area from the read image. The setting unit 27 sets an enlargement magnification according to the vertical width of the pupil area in the detected face area.

  Step S104 is processing to enlarge the eye area. The image processing unit 15 enlarges the eye area based on the enlargement magnification set in step S103.

  Step S105 is processing to display an image with an enlarged eye area. As shown in FIG. 3, the display unit 16 superimposes and displays the image Pa in which the eye area is enlarged in step S <b> 104, the bar 30 that shows the enlargement magnification, the cursor 31 that shows the current enlargement magnification, and the “decision” item 32. To do.

  Step S106 is processing for determining whether or not the size of the eye area is appropriate. The display unit 16 superimposes and displays an image in which the eye area is enlarged, a message such as “Is the eye size appropriate?”, An item “Yes”, and an item “No”. When the “Yes” item is touched (when the determination in step S106 is YES), the control unit 21 proceeds to step S107. On the other hand, when the “No” item is touched (when the determination in step S106 is NO), the control unit 21 proceeds to step S108.

  Step S <b> 107 is processing for recording an image with an enlarged eye area on the recording medium 20. In addition, when recording the image in which the eye area is enlarged, the control unit 21 may record information indicating the enlargement magnification in the Exif information (accompanying information) of the image. In addition, information indicating the magnification may be recorded as a separate file associated with an image instead of being recorded as supplementary information.

  Step S108 is a process of determining whether or not an instruction for enlarging the eye area has been received by touching the face area via the touch panel 23. When the control unit 21 receives an instruction to enlarge the eye area (when the determination in step S108 is YES), the control unit 21 proceeds to step S109. On the other hand, if the control unit 21 has not received an instruction to enlarge the eye area (when the determination in step S108 is NO), the control unit 21 proceeds to step S107.

  Note that the control unit 21 moves the cursor 31 downward when the cursor 31 is slid down while being touched. Then, when the “determination” item 32 is touched, the control unit 21 causes the image processing unit 15 to generate an image in which the eye area is enlarged at the enlargement magnification indicated by the position of the cursor 31, and the image is displayed on the display unit 16. indicate. Thus, the control unit 21 can increase the magnification when the face area is touched, and can decrease the magnification when the cursor 31 is slid down.

  Step S109 is processing for determining whether or not the enlargement magnification is equal to or less than the upper limit value. When the enlargement magnification is equal to or less than the upper limit value (when the determination in step S109 is YES), the control unit 21 proceeds to step S110. On the other hand, when the enlargement magnification exceeds the upper limit value (when the determination in step S109 is NO), the control unit 21 proceeds to step S112 described later.

  Step S110 is processing for enlarging the eye area. The setting unit 27 sets an enlargement magnification that is the next step after the enlargement magnification set in step S103. The image processing unit 15 enlarges the eye area based on the enlargement magnification.

  Step S111 is processing to display an image in which the eye area is enlarged. Thereafter, the control unit 21 returns to step S108 and determines whether an instruction to enlarge the eye area has been received.

  Step S112 is a process for displaying a warning when the enlargement magnification exceeds the upper limit in step S109. The display unit 16 superimposes an image in which the eye area is enlarged, a message such as “May be unnatural if corrected any more, continue?”, “Yes” item, and “No” item. indicate.

  Step S113 is processing for determining whether or not to continue. The control unit 21 determines whether or not the “Yes” item is touched. When the “Yes” item is touched (when the determination in step S113 is YES), the control unit 21 proceeds to step S110. On the other hand, when the “No” item is touched (when the determination in step S113 is NO), the control unit 21 keeps the enlargement magnification at the upper limit value and proceeds to step S107.

  As described above, the imaging apparatus 10 according to the first embodiment sets an enlargement magnification based on the vertical width of the subject's pupil region, and enlarges the eye region at the enlargement magnification. Therefore, according to the imaging device 10 of the first embodiment, since the eye area can be enlarged according to the vertical width of the pupil area of each subject, an image that makes the subject look beautiful can be efficiently generated. .

  Further, the user can increase the enlargement magnification set by the imaging apparatus 10 by a preset step width by touching the face area. The imaging device 10 displays a warning when the enlargement magnification increased by the user exceeds the upper limit value. Therefore, according to the imaging device 10 of the first embodiment, it is possible to prevent the balance of the entire image from being deteriorated and an unnatural impression from being excessively enlarged. Furthermore, since the process is continued when the user wants to enlarge the eye area even if the upper limit is exceeded, an image reflecting the user's intention can be obtained.

  In the above embodiment, the example in which the vertical width of the eye region and the entire pupil region are enlarged has been described, but the present invention is not limited to this. For example, since it may become unnatural if only the vertical width of the eye area is enlarged, not only the vertical width but also the horizontal width is enlarged when the enlargement magnification becomes a predetermined value or more. Further, the vertical width of the eye region and the entire pupil region may be reduced.

  In addition, when the pupil area has a white glow that shines like light (hereinafter referred to as catch light), the catch light may be enlarged or the number may be increased in proportion to the magnification. Alternatively, the type and size of the catchlight may be displayed in a palette, and the catchlight to be added may be selected in advance to enlarge the eye area and add the catchlight.

(Second Embodiment)
In 1st Embodiment, the example which expands an eye area | region was shown as a correction process with respect to a face area | region. In 2nd Embodiment, the example which correct | amends a skin area is shown as a correction process with respect to a face area. Here, the configuration of the imaging device in the second embodiment is the same as that of the imaging device 10 in the first embodiment shown in FIG.

  As described above, the image processing unit 15 of the second embodiment corrects the skin area as the correction process for the face area. For example, the skin area correction processing includes exposure correction, saturation correction, smoothing correction by Gaussian blur, and the like. As a result, it is possible to obtain a preferable image in which the skin area of the subject is expressed white and the skin color dullness is reduced. Further, the unevenness of the skin area of the subject is corrected, and a preferable image in which wrinkles, rough skin, and the like are hardly noticeable can be obtained. Note that such correction processing is not only for improving the appearance of women, but also because the face area is bright and preferable images can be acquired, it is also useful when the subject is a man or a child. It is.

  In addition, the setting unit 27 of the second embodiment determines the skin state as the analysis of the face area. The determination of the skin condition is whether the brightness is bright (appropriate exposure + 1), whether the saturation is vivid (10% or more), whether there are few irregularities (the granularity of the skin is below a predetermined value) or not. Can be mentioned. Then, the setting unit 27 sets the exposure correction correction amount A, the saturation correction correction amount B, and the smoothing correction correction amount C as the application amount of the correction processing for the face area, according to the skin state. Table 2 is a table showing the correction amount A, the correction amount B, and the correction amount C. The correction amount C is a value indicating the radius of the smoothing correction. The correction amount C when the radius is 0 pixel is 0, and the correction amount C is 5 when the radius is 10 pixels.

  As shown in Table 2, the correction amounts A to C are set based on the original skin state. For example, the correction amount A is set to +0.3, +0.7, +1.0, +1.3 EV, or the like. The setting unit 27 sets +0.3 EV when the brightness is bright, and sets +0.7 EV when the brightness is normal (appropriate exposure ± 0). The correction amount B is set to 10, 20, 30, 40, 50%, or the like. The setting unit 27 sets 20% when the lightness is vivid, and sets 30% when the lightness is not vivid, that is, dull. The correction amount C is set to 1, 1.5, 2, 2.5, 3, 3.5 or the like. The setting unit 27 sets 1 when the unevenness is small, and sets 2 when the unevenness is large.

  The image processing unit 15 automatically corrects the skin area with the correction amounts A to C set by the setting unit 27. When the user thinks that the correction of the skin area is insufficient, the correction amount A to C can be increased by a preset step width by touching the face area displayed on the display unit 16. For example, when the brightness is bright, the correction amount A becomes +0.7, +1.0 EV,. When the saturation is vivid, the correction amount B is 30, 40, 50%,. When the unevenness is small, the correction amount C becomes 1.5, 2, 2.5,.

  Further, if the correction process for the skin area is performed too much, the balance of the entire image may be deteriorated or unnatural, and therefore, the upper limit values of the correction amounts A to C are set according to the skin area. For example, the upper limit value of the correction amount A is +1.0 EV when the brightness is bright, and +1.7 EV when the brightness is normal. The upper limit of the correction amount B is 40% when the saturation is vivid, and 60% when the saturation is dull. In addition, the upper limit value of the correction amount C is 2.5 when the unevenness is small, and is 3.5 when the unevenness is large.

  In addition, the imaging apparatus 10 according to the second embodiment has a “skin area correction mode” in which a correction process is performed on a skin area of an image recorded on the recording medium 20.

  Next, the flow of the skin area correction mode will be described with reference to FIG. Hereinafter, for convenience, an image including one person will be described as an example.

  Step S201 is processing for selecting an image to be subjected to skin area correction. The control unit 21 selects an image to be subjected to skin area correction from an image recorded on the recording medium 20 according to a user designation via the touch panel 23.

  Step S202 is processing for setting a skin region correction mode.

  Step S203 is processing for setting correction amounts A, B, and C. The control unit 21 reads the image selected in step S201 from the recording medium 20. Then, the face detection unit 26 detects a face area from the read image. The setting unit 27 sets correction amounts A, B, and C according to the skin condition in the detected face area.

  Step S204 is processing for performing exposure correction.

  Step S205 is processing for correcting saturation.

  Step S206 is processing for performing smoothing correction. Details of exposure correction, saturation correction, and smoothing correction will be described later.

  Step S207 is processing to record the image with the corrected skin area on the recording medium 20. The control unit 21 performs the same process as in step S107.

  Next, exposure correction, saturation correction, and smoothing correction in steps S204 to S206 in the flowchart of FIG. 4 will be described. FIG. 5 is a flowchart showing the flow of exposure correction.

  Step S301 is processing for performing exposure correction. The image processing unit 15 performs exposure correction based on the correction amount A set in step S203.

  Step S302 is processing to display an image after exposure correction. The display unit 16 superimposes and displays the image for which exposure correction has been performed in step S301, the bar indicating the correction amount A, the cursor indicating the current correction amount A, and the item “Determine”.

  Step S303 is processing for determining whether or not the brightness of the face area is appropriate. The display unit 16 superimposes and displays an image after exposure correction, a message such as “Is the face brightness appropriate?”, An item “Yes”, and an item “No”. When the “Yes” item is touched (when the determination in step S303 is YES), the control unit 21 ends the process of FIG. On the other hand, when the “No” item is touched (when the determination in step S303 is NO), the control unit 21 proceeds to step S304.

  Step S304 is a process of determining whether or not an instruction to increase the correction amount A is received by touching the face area via the touch panel 23. When the control unit 21 receives an instruction to increase the correction amount A (when the determination in step S304 is YES), the control unit 21 proceeds to step S305. On the other hand, if the control unit 21 has not received an instruction to increase the correction amount A (when the determination in step S304 is NO), the process of FIG. 5 ends.

  Step S305 is processing to determine whether or not the correction amount A is equal to or less than the upper limit value. When the correction amount A is equal to or less than the upper limit value (when the determination in step S305 is YES), the control unit 21 proceeds to step S306. On the other hand, when the correction amount A exceeds the upper limit value (when the determination in step S305 is NO), the control unit 21 proceeds to step S308 described later.

  Step S306 is processing for performing exposure correction. The setting unit 27 sets a correction amount A that is the next step after the correction amount A set in step S203. The image processing unit 15 performs exposure correction based on the correction amount A.

  Step S307 is processing to display an image after exposure correction. Thereafter, the control unit 21 returns to step S304 and determines whether or not an instruction to increase the correction amount A has been received.

  Step S308 is a process for displaying a warning when the correction amount A exceeds the upper limit value in step S305. The display unit 16 superimposes and displays the image after exposure correction, a message such as “May it be unnatural if corrected further, but continue?”, “Yes” item, and “No” item. .

  Step S309 is processing to determine whether or not to continue. The control unit 21 determines whether or not the “Yes” item is touched. When the “Yes” item is touched (when the determination in step S309 is YES), the control unit 21 proceeds to step S306. On the other hand, when the “No” item is touched (when the determination in step S309 is NO), the control unit 21 keeps the correction amount A at the upper limit value and ends the process of FIG.

  The image processing unit 15 similarly performs the processing from step S301 to step S309 for saturation correction and smoothing correction.

  Note that the effect of smoothing correction is difficult to understand unless enlarged display is performed. Therefore, when the correction amount C exceeds the upper limit value, the following processing is performed. As shown in FIG. 6A, the display unit 16 displays an image Pb after smoothing correction, a bar 40 indicating the correction amount C, a cursor 41 indicating the current correction amount C, “unnatural if corrected further. A message 42 such as “There may be a case. Next, as shown in FIG. 6B, the display unit 16 displays a part of the enlarged image Pb, a message 43 “Do you want to continue?”, An item 44 “Yes”, and “No”. Item 45 is superimposed and displayed. Further, the image processing unit 15 enlarges the image Pc before the smoothing correction. Then, the display unit 16 may switch and display a part of the enlarged image Pb and a part of the enlarged image Pc corresponding to the part (see FIG. 6C). Thereby, the user can compare the images before and after the smoothing correction.

  As described above, the imaging apparatus 10 according to the second embodiment sets the correction amounts A to C based on the result of determining the skin condition of the subject, and performs correction processing using the correction amounts A to C. Therefore, according to the imaging device 10 of the second embodiment, correction processing according to the skin condition of each subject can be performed, and thus an image that makes the subject look beautiful can be generated efficiently.

  Further, the user can increase the correction amounts A to C set by the imaging device 10 by a preset step width by touching the face area. Furthermore, the imaging device 10 displays a warning when the correction amounts A to C raised by the user exceed the upper limit value. Therefore, according to the imaging device 10 of the second embodiment, it is possible to prevent the balance of the entire image from being deteriorated or an unnatural impression by excessively correcting the skin region. Furthermore, if the user wants to correct the skin area even if the upper limit value is exceeded, the processing is continued, so that an image reflecting the user's intention can be obtained.

  In the second embodiment, an example is shown in which processing is performed in the order of exposure correction, saturation correction, and smoothing correction. However, the order of processing is an example and is not limited.

  In the first embodiment, the upper limit value of the enlargement magnification is set to prevent the eye area from being excessively enlarged. However, when the display unit 16 is small, it is difficult for the user to notice the effect of the enlargement process. Therefore, when the display unit 16 is not larger than the predetermined size, in order to easily understand the effect of the enlargement process, the enlargement magnification is increased by 2 steps or 20% only for the image displayed on the display unit 16 and The effect may be highlighted.

  For example, when the vertical width of the pupil region is less than the threshold value, the enlargement magnification is 10%. In this case, in step S <b> 105, the control unit 21 generates a display image with an enlargement ratio of 15% by the image processing unit 15 and displays the image on the display unit 16. Note that when displaying an image with an increased magnification in this manner, the image returned to the magnification set in step S103 may be displayed in an enlarged manner, or the image may be enlarged with the magnification increased. It may be displayed. Moreover, although the example which raises an enlargement magnification 2 steps or 20% was shown, these values are examples and are not limited. The same applies to the second embodiment.

  In addition, as the correction process, the eye area is enlarged in the first embodiment, and the skin area is corrected in the second embodiment. However, the correction process is not limited thereto. For example, the image processing unit 15 performs a soft focus process using a filter showing a predetermined soft focus effect, a low-pass filter, or the like. Thereby, when a subject is a woman, while femininity is emphasized, a preferable image with softness can be obtained.

  Further, the image processing unit 15 may perform correction to make the person included in the image look slim. For example, the image processing unit 15 changes the aspect ratio of the image to be slightly vertically long, then cuts out a person portion and adjusts the size of the image.

  Further, the image processing unit 15 may reduce the shine that is likely to occur due to strong light such as flashing by performing processing for suppressing highlights. Moreover, you may perform the correction | amendment which makes skin look fresh by emphasizing a part partially.

  In general, the older the age, the lower the corner of the mouth and the contour of the jaw. For this reason, the image processing unit 15 may increase the mouth corners and the contours of the jaws to give a rejuvenated impression by distortion correction. Further, the image processing unit 15 may clarify the face by adjusting the strength by sharpening processing on the face outline and enhancing the outline.

  In addition to the above-described processing, the image processing unit 15 may perform processing such as dynamic range expansion, dark portion correction, edge unsharpness mask processing, and noise processing.

  Moreover, the magnification and the step widths described in the first embodiment are examples and are not limited. For example, the step width may not be constant and may be changed depending on the vertical width of the pupil region. Further, the step width may be narrowed as the enlargement magnification increases. In addition, the user may be able to make a custom change. The same applies to the second embodiment. For example, in the second embodiment, the step width of the correction amount C may be increased when the skin region has many irregularities and the skin condition is poor.

  In the first embodiment, the example in which the enlargement magnification is increased when the face area is touched has been described. However, the present invention is not limited to this. For example, an item indicating enlargement of the eye area is displayed on the display unit 16, and when this item is touched, the enlargement magnification may be increased, or a button for accepting the enlargement of the eye area is provided on the operation unit 17. Also good. The same applies to the second embodiment.

  In the first embodiment, an example in which the upper limit value of the enlargement magnification is set is shown, but a lower limit value may be set. The same applies to the second embodiment.

  Moreover, although the example divided into two modes, eye area expansion mode and skin area correction mode, was shown, it is not restricted to this. For example, the eye area enlargement mode and the skin area correction mode may be combined into one mode, and the eye area enlargement and the skin area correction may be performed continuously.

  In the first embodiment, an example in which an eye area of an image including one person is enlarged has been described. However, an eye area of an image including a plurality of persons can be enlarged. The same applies to the second embodiment.

  In the first embodiment, the example in which the eye area of the image recorded on the recording medium 20 is enlarged is shown, but the present invention is not limited to this. For example, the eye area of the image acquired at the time of imaging may be enlarged. The same applies to the second embodiment.

  In the first embodiment and the second embodiment, the imaging apparatus 10 has been described as an example, but the present invention is not limited to this. For example, the present invention can be similarly applied to an image display device such as an image processing device such as a personal computer, a mobile phone including an imaging device, a digital photo frame, and a PDA (Personal Digital Assistant). Furthermore, the functions shown in FIG. 1 and the flow charts shown in FIGS. 2, 4, and 5 may be recorded as a program on a computer-readable recording medium, and the program may be executed by the computer.

  DESCRIPTION OF SYMBOLS 10 ... Imaging device, 12 ... Image pick-up element, 15 ... Image processing part, 16 ... Display part, 23 ... Touch panel, 26 ... Face detection part, 27 ... Setting part

Claims (8)

A face detection unit for detecting a face area from an image;
An application amount setting unit that sets an application amount of correction processing for the face region based on the analysis result of the face region detected by the face detection unit;
An image processing device comprising: an image processing unit that performs correction processing on the face area with the application amount set by the application amount setting unit. The image processing apparatus according to claim 1.
The application amount setting unit sets an enlargement magnification for the eye region based on a measurement result of measuring the size of the eye region in the face region,
The image processing apparatus, wherein the image processing unit enlarges the eye region at the enlargement magnification set by the application amount setting unit. The image processing apparatus according to claim 1.
The application amount setting unit sets at least one correction amount of exposure correction, saturation correction, and smoothing correction for the face region based on the determination result of determining the skin state in the face region,
The image processing unit performs at least one of exposure correction, saturation correction, and smoothing correction on the face area with the correction amount set by the application amount setting unit. . The image processing apparatus according to any one of claims 1 to 3,
An allowable range setting unit that sets an allowable range of the correction amount based on the analysis result of the face area detected by the face detection unit;
An image processing apparatus comprising: an operation unit that changes the application amount within at least the allowable range. The image processing apparatus according to claim 4.
An image processing apparatus comprising: a warning unit that issues a warning when the application amount changed by the operation unit exceeds an upper limit value of the allowable range. The image processing apparatus according to any one of claims 1 to 5,
A display unit for displaying the image subjected to the correction processing;
The application amount setting unit is configured to set a correction amount that is larger than a correction amount based on the analysis result when the display unit has a predetermined size or less. The image processing apparatus according to any one of claims 1 to 6,
An imaging apparatus comprising: an imaging unit that acquires the image. A face detection step of detecting a face area from the image;
An application amount setting step of setting an application amount of correction processing for the face region based on the analysis result of the face region detected by the face detection unit;
An image processing program for realizing, by a computer, an image processing step of performing correction processing on the face area with the application amount set in the application amount setting step.

Images