JP5736727B2 - Image processing apparatus and imaging apparatus - Google Patents

Description

  The present invention relates to an image processing apparatus and an imaging apparatus.

  Conventionally, a method for determining an image processing parameter in accordance with a user's preference and photographing conditions is known. For example, in Patent Document 1, a plurality of monitor images processed with different image processing parameters are simultaneously displayed on an LCD display, and image processing parameters applied to the monitor image selected by the user are set as shooting conditions at the time of shooting. It has been devised.

JP 2002-142148 A

  However, in the technique of Patent Document 1, when the number of monitor images displayed on the LCD display is small, in other words, when the number of image processing parameters to be set is small, the displayed monitor images include user's color preference. In some cases, the setting value of the image processing parameter reflecting the shooting intention is not included, and the user needs to set the image processing parameter again. The processing for setting the image processing parameters is complicated, and when there are a plurality of image processing parameters to be set, it takes time and troublesome to combine the image processing parameters intended by the user.

  Accordingly, an object of the image processing apparatus and the imaging apparatus of the present invention is to set image processing parameters intuitively and quickly.

An image processing apparatus according to the present invention is based on an image processing unit that performs image processing on an image, a detection unit that detects a change in posture of at least a part of the device, and the change in posture detected by the detection unit. A setting unit that sets image processing conditions in the image processing unit , wherein the image is a plurality of images that are continuously acquired at predetermined time intervals, and the detection units are orthogonal to each other A change in the posture with respect to each axis when at least two directions are used as an axis is detected, and the setting unit selects one of the at least two directions by the detection unit from the plurality of continuously acquired images. An image in a period in which the change in posture is detected as an axis is selected, and image processing conditions for the selected image are set based on the change in posture with the other direction as an axis.
The image processing apparatus of the present invention includes an image processing unit that performs at least one of hue correction and exposure correction on an image, and a detection unit that detects a change in posture of at least a part of the image processing apparatus. A setting unit that sets a parameter used for at least one of the hue correction and the exposure correction based on the change in the posture detected by the detection unit.
Moreover, the imaging device of this invention is provided with the image processing apparatus disclosed by this invention, and the imaging part which acquires an image.

  According to the image processing apparatus and the imaging apparatus of the present invention, it is possible to set image processing parameters intuitively and quickly.

It is a block diagram which shows the structure of the imaging device 10 in embodiment of this invention. (A) It is a figure which shows the external appearance of the imaging device 10. FIG. (B) It is a figure which shows an example when the imaging device 10 is rotated centering | focusing on the X-axis. (C) It is a figure which shows the example when rotating the imaging device 10 centering on the Y-axis. (D) It is a figure which shows an example when the imaging device 10 is rotated centering | focusing on the Z-axis. It is a flowchart explaining the flow at the time of imaging | photography. It is a figure which shows the uniform state of the display of a preview image.

  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 present 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, a display unit 15, a flash RAM 16, an acceleration sensor 17, a recording I / F unit 18, and a recording. A medium 19, an operation unit 20, a CPU 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 signal is recorded in the buffer memory 14 as one frame of image data. Hereinafter, this one-frame image data is referred to as RAW 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 display unit 15 includes a liquid crystal panel that displays various images, a backlight that illuminates the liquid crystal panel from behind the display surface, and the like. Further, the CPU 21 functions as a display control unit for controlling an image to be displayed on the display unit 15 and controls a liquid crystal panel, a backlight, and the like of the display unit 15. Various images displayed on the display unit 15 are an image acquired by imaging, a preview image, a menu image, an image recorded on the recording medium 19, and the like, which will be described later. Corresponding images are appropriately displayed according to instructions from the CPU 21. It is assumed that it is displayed on the display unit 15. The flash RAM 16 stores a program for controlling various operations of the imaging apparatus 10 and the like. Further, the flash RAM 16 stores a table in which an inclination vector, which will be described later, is associated with an image processing parameter.

  The acceleration sensor 17 is a MEMS (Micro Electro Mechanical Systems) type acceleration sensor that detects gravitational acceleration. The acceleration sensor 17 may be a capacitance detection type or piezoresistive type acceleration sensor, or a heat detection type acceleration sensor. The acceleration sensor 17 detects a change in the posture of the imaging device 10. The acceleration sensor 17 converts the detected value into a rotation angle and outputs it to the CPU 21.

  FIG. 2A is a diagram illustrating an appearance of the imaging device 10. In FIG. 2A, the direction perpendicular to the optical axis L direction and indicating the left-right direction of the imaging device 10 is defined as the X axis. A direction perpendicular to the optical axis L and the X axis and indicating the vertical direction of the imaging device 10 is defined as a Y axis. A direction indicating the optical axis L direction is defined as a Z axis. The acceleration sensor 17 detects a rotation angle θx in the rotation direction about the X axis. A solid line in FIG. 2B indicates the position of the imaging device 10, and a two-dot chain line indicates the position of the imaging device after rotation. Further, the acceleration sensor 17 detects a rotation angle θy in the rotation direction about the Y axis (see FIG. 2C). The acceleration sensor 17 detects a rotation angle θz in the rotation direction about the Z axis (see FIG. 2D).

  The recording I / F unit 18 includes a connector for connecting the recording medium 19. When the recording I / F unit 18 and the recording medium 19 are connected, data is written / read on the recording medium 19 in accordance with an instruction from the CPU 21. That is, the CPU 21 also functions as a recording control unit for recording information on the recording medium 19. The operation unit 19 includes a release button 23, a cross key 24, an end button 25, and the like. When the CPU 21 determines that the release button 23 has been pressed halfway, operations such as autofocus (AF) and automatic exposure (AE) before photographing are started. When the CPU 21 determines that the release button 23 has been fully pressed, the CPU 21 instructs the start of an imaging operation for acquiring a recording image to be recorded on the recording medium 19. When the release button 23 is half-pressed, AE calculation and AF calculation are executed. Further, the release button 23 is subjected to processing related to imaging when the release button 23 is fully pressed. The cross key 24 is an operation key for selecting the setting condition of the operation menu indicated by the menu image of the imaging apparatus 10 or executing the selected process. The end button 25 is operated to end the setting of the image processing parameter set by the setting unit 27 described later. The states of the release button 23, the cross key 24, and the end button 25 are detected by the CPU 21, and a sequence based on the detected button and key states is executed.

  The CPU 21 performs overall control of the imaging apparatus 10 according to a predetermined sequence program, and executes various calculations (AF calculation, AE calculation, etc.) necessary for shooting. The CPU 21 includes a calculation unit 26, a setting unit 27, and an image processing unit 28. The calculation unit 26 calculates an inclination vector (x, y, z) based on the rotation angles θx, θy, θz output from the acceleration sensor 17. Further, as described above, the CPU 21 performs control of recording on the recording medium 19, control of display on the display unit 15, and the like.

  The setting unit 27 sets image processing parameters based on the inclination vector (x, y, z) calculated by the calculation unit 26. Examples of the image processing parameter include a hue correction value and an exposure correction value. For example, the setting unit 27 reads the hue correction values corresponding to the inclination vectors x and y from the table in which the inclination vectors stored in the flash RAM 16 are associated with the image processing parameters, and sets the read hue correction values. Note that “setting” means that the hue correction value read from the flash RAM 16 is temporarily recorded in the buffer memory 14 in accordance with an instruction from the CPU 21. The hue correction value is indicated by (m, n). m is indicated by any of -3, -2, -1, 0, +1, +2, +3, and n is indicated by any of -3, -2, -1, 0, +1, +2, +3. It is. The higher the value of m, the stronger the yellowishness, and the lower the value of m, the stronger the blueness. Also, the higher the value of n, the stronger the greenness, and the lower the value of n, the stronger the redness. It is assumed that the hue correction value made appropriate by the image processing unit 28 is (0, 0). As the hue correction value, (0, 0) is preset as an initial value.

  For example, as shown in FIG. 2C, when the imaging apparatus 10 is viewed from above, the value of m increases as the rotation angle in the right rotation direction about the Y axis increases. The rotation angle θy and m are associated with each other so that the value of m decreases as the rotation angle in the left rotation direction increases. Further, as shown in FIG. 2B, when the imaging device 10 is viewed from the right side, the value of n increases as the rotation angle in the right rotation direction about the X axis increases. The rotation angle θx and n are associated with each other so that the value of n decreases as the rotation angle in the left rotation direction increases.

  Further, the setting unit 27 reads the exposure correction value corresponding to the tilt vector z from the table in which the tilt vector stored in the flash RAM 16 is associated with the image processing parameter, and sets the read exposure correction value. Note that “setting” means that the exposure correction value read from the flash RAM 16 is temporarily recorded in the buffer memory 14 in accordance with an instruction from the CPU 21. Exposure correction values are indicated by −3, −2, −1, 0, +1, +2, and +3 EV. Note that the appropriate exposure value calculated by the AE calculation is set to 0 EV, and the exposure correction value is the image brightness component (the value indicated by the signal of each pixel in the case of a RAW image). This means that the exposure is changed in a pseudo manner by increasing or decreasing by 28, and shows how much the luminance component is changed from the appropriate exposure value. This exposure correction value is preset to 0 EV as an initial value. For example, as shown in FIG. 2D, when the imaging device 10 is viewed from the front, the exposure correction value increases as the rotation angle in the right rotation direction about the Z axis increases. The rotation angle θz and the exposure correction value are associated with each other so that the exposure correction value decreases as the rotation angle in the left rotation direction increases.

  The image processing unit 28 performs image processing on the image data recorded in the buffer memory 14 with reference to the hue correction value and exposure correction value recorded (set) in the buffer memory 14. Examples of the image processing include well-known resolution conversion processing, white balance adjustment, brightness adjustment, color interpolation, gradation conversion processing, and contour enhancement processing. The image processing unit 28 also executes processing for compressing in JPEG (Joint Photographic Experts Group) format and the like, and processing for decompressing and restoring the compressed data.

  The image processing unit 28 generates a reference preview image at the time of shooting. First, the image processing unit 28 performs resolution conversion processing on the RAW image data, and generates RAW image data having a resolution lower than the resolution of the RAW image data. Next, the image processing unit 27 generates a preview image serving as an initial exposure correction value and hue correction value based on the exposure conditions at the time of shooting. Thereafter, the image processing unit 28 generates a preview image that becomes the hue correction value and the exposure correction value set by the setting unit 27 based on the RAW image data after the resolution conversion processing.

  The bus 21 connects the buffer memory 14, the display unit 15, the flash RAM 16, the acceleration sensor 17, the recording I / F unit 18, and the CPU 21 to execute input / output of data and signals.

  Next, the flow at the time of photographing will be described using the flowchart of FIG. Note that the flowchart of FIG. 4 is executed when the release button 23 is half-pressed by the CPU 21 in the shooting mode. Further, when the release button 23 is half-pressed, the exposure condition is set by the CPU 21.

  Step S101 is processing for determining whether or not the release button 23 has been fully pressed. If the CPU 21 determines that the release button 23 has been fully pressed (when the determination in step S101 is YES), the CPU 21 proceeds to step S102. On the other hand, if the CPU 21 determines that the release button 23 is not fully pressed (when the determination in step S101 is NO), the CPU 21 waits until the release button 23 is fully pressed.

  Step S102 is processing for generating RAW image data. The CPU 21 causes the image sensor 12 and the A / D converter 13 to generate RAW image data R1. The raw image data is written into the buffer memory 14 according to an instruction from the CPU 21.

  Step S103 is processing for copying the RAW image data written in the buffer memory 14 and performing resolution conversion processing. The image processing unit 28 copies and reads the RAW image data written in the buffer memory 14. Then, resolution conversion processing is performed on the read RAW image data R2. Note that the RAW image data R2 that has been subjected to the resolution conversion processing in accordance with the instruction of the CPU 21 is written into the buffer memory 14 again.

  That is, at this time, the buffer memory 14 stores the RAW image data R1 that has not been subjected to resolution conversion processing and the low-resolution RAW image data R2 that has undergone resolution conversion processing.

  Step S104 is processing to generate a preview image P1. First, the setting unit 27 sets an initial value (0, 0) of the hue correction value, and temporarily stores the hue correction value (0, 0) in the buffer memory 14. Further, the setting unit 27 sets an initial value 0 EV of the exposure correction value, and temporarily stores 0 EV as the exposure correction value in the buffer memory 14. Next, the image processing unit 28 copies and reads out the RAW image data R2 having been subjected to resolution conversion processing written in the buffer memory 14, and reads out the hue correction value and the exposure correction value temporarily stored in the buffer memory 14. Then, the image processing unit 28 performs image processing corresponding to the read hue correction value and exposure correction value on the read RAW image data R2. As a result, image data (preview image data) that is the basis of the preview image P1 is generated. The preview image P1 generated in this way is temporarily stored in the buffer memory 14 according to an instruction from the CPU 14.

  In step S <b> 105, the CPU 21 performs an offset process of the posture of the imaging device 10. Thereby, the posture of the imaging apparatus 10 at this time becomes a reference posture when setting the image processing parameter. Specifically, the calculation unit 26 calculates an initial value (x, y, z) = (0, 0, 0) of the inclination vector, and the CPU 21 temporarily stores the initial value of the inclination vector in the buffer memory 14. . Further, in response to an instruction from the CPU 21, a color chart 30 indicating a hue correction value corresponding to the inclination vector value stored in the buffer memory 14 and a bar 31 indicating an exposure correction value are also temporarily stored in the buffer memory 14.

  Step S106 is processing to display the preview image P1. The display unit 15 displays a preview image P1 read from the buffer memory 14, a color chart 30 indicating a hue correction value, and a bar 31 indicating an exposure correction value, respectively, according to an instruction from the CPU 21 (see FIG. 4A).

  Step S107 is processing for determining whether or not a change in the attitude of the imaging apparatus 10 has been detected. If the CPU 21 determines that a change in the attitude of the imaging device 10 has been detected (if the determination in step S107 is YES), the CPU 21 proceeds to step S108. On the other hand, if the CPU 21 determines that a change in the attitude of the imaging device 10 is not detected (when the determination in step S107 is NO), the CPU 21 proceeds to step S111.

  Step S108 is processing to update the inclination vector. The calculation unit 26 calculates an inclination vector (x, y, z) = (a, b, c) based on the rotation angles θx, θy, θz output from the acceleration sensor 17. Then, the calculation unit 26 uses the value (x, y, z) of the previous inclination vector stored in the buffer memory 14 as the newly calculated inclination vector (x, y, z) = (a, b, c). ). More specifically, the CPU 21 overwrites the calculated inclination vector (x, y, z) = (a, b, c) with the previous inclination vector and performs primary storage. Further, in accordance with an instruction from the CPU 21, a color chart 30 including a pointer 32 indicating a hue correction value corresponding to an updated inclination vector value stored in the buffer memory 14 and a bar 31 including a cursor 33 indicating an exposure correction value are also buffered. Temporarily stored in the memory 14.

  Step S109 is processing for generating a preview image based on an image processing condition matched with the updated inclination vector. First, the setting unit 27 reads the hue correction value and the exposure correction value corresponding to the updated inclination vector from the table in which the inclination vector stored in the flash RAM 16 is associated with the image processing parameter, and the read hue correction value. And set the exposure compensation value. That is, the setting unit 27 temporarily stores the hue correction value and the exposure correction value corresponding to the updated inclination vector in the buffer memory 14 instead of the previous hue correction value and the exposure correction value stored in the buffer memory 14. Let Next, the image processing unit 28 copies and reads the RAW image data R2 after the resolution conversion processing from the flash RAM 14, and reads the hue correction value and the exposure correction value set by the setting unit 27 from the buffer memory 14. Then, the image processing unit 28 performs image processing using the read hue correction value and exposure correction value on the RAW image data R2 to generate a preview image Pn. The Pn generated in this way is temporarily stored in the buffer memory 14 according to an instruction from the CPU 21.

  Step S110 is a process for displaying the generated preview image. In response to an instruction from the CPU 21, the display unit 15 replaces the currently displayed preview image with the latest preview image generated in step S109 and stored in the buffer memory 14 and displays the preview image. The display unit 15 also displays the color chart 30 including the updated pointer 32 and the bar 31 including the updated cursor 33 indicating the exposure correction value according to the instruction of the CPU 21 in accordance with the replacement of the preview image. Read from and display.

  Step S111 is processing for determining whether or not the end button 25 has been operated. If the CPU 21 determines that the end button 25 has been operated (if the determination in step S111 is YES), the CPU 21 proceeds to step S112. On the other hand, when the CPU 21 determines that the end button 25 is not operated (when the determination in step S111 is NO), the CPU 21 returns to step S107.

  Step S112 is a process for performing image processing. The image processing unit 28 uses the latest hue correction value and exposure correction value stored in the buffer memory 14 when the end button 25 is operated in step S111, that is, the hue correction value last set by the CPU 21 in step S109. Using the exposure correction value, image processing is performed on the RAW image data R1 stored in the buffer memory 14 and not subjected to resolution conversion processing. On the other hand, if the rotation angle is not detected in step S107, the image processing unit 28 stores the hue correction value in the buffer memory 14 using the initial value (0, 0) of the hue correction value and the initial value 0 EV of the exposure correction value. The RAW image data R1 is subjected to image processing.

  Step S113 is a process of recording the image data after the image processing. The CPU 21 records the image data after the image processing corresponding to the RAW image data R1 on the recording medium 19, and ends the series of processes.

  When the rotation angle is detected in step S107, the CPU 21 may record the hue correction value and the exposure correction value used in step S112 on the recording medium 19 as Exif information (accompanying information) of the image. Further, instead of recording the hue correction value and the exposure correction value as supplementary information, the CPU 21 records the hue correction value and the exposure correction value as separate files on the recording medium 19 in association with the image data after image processing. May be.

  Further, without performing the above-described image processing in step 112, in step S113, the CPU 21 can store the hue correction value and the exposure correction value in association with the RAW image data R1. In this case, the hue correction value and the exposure correction value are read out later using the imaging apparatus 10 or a computer, and image processing corresponding to the read hue correction value and the exposure correction value is performed on the RAW image data R1. Also good.

  FIG. 4 shows a uniform display state of the preview image. For example, when the release button 23 is fully pressed, processing related to imaging is executed. Immediately after the processing related to imaging is executed, the hue correction value is set to the initial value (0, 0), and the exposure correction value is set to the initial value 0 EV. Therefore, a preview image P1 is generated by image processing using the hue correction value (0, 0) and the exposure correction value 0EV, and the preview image P1 is displayed on the display unit 15 (see FIG. 4A). At this time, the color chart 30 indicating the hue correction value is displayed in a state where the pointer 32 is aligned with the central portion corresponding to the hue correction value (0, 0). As shown in FIG. 4A, the display unit 15 displays the exposure correction value as “brightness”. In addition, X, Y, and Z in FIG. 4A are not displayed on the display unit 15, but indicate axes that are the center when the imaging device 10 is rotated.

  Thereafter, the yellowishness of the image increases based on the angle at which the imaging device 10 rotates in the clockwise direction about the Y axis. For example, when the image is rotated by a predetermined angle in the right rotation direction, the hue correction value is reset to (1, 0), which is one level higher than yellow (0, 0). Further, the exposure correction value decreases based on the angle at which the imaging apparatus 10 rotates in the left rotation direction about the Z axis. For example, when the image is rotated by a predetermined angle in the left rotation direction, the exposure correction value is reset to -1EV, which is one step lower than 0EV. A preview image P2 generated by image processing using the hue correction value (1, 0) and the exposure correction value -1 EV is displayed on the display unit 15 (see FIG. 4B). At this time, in the color chart 30 indicating the hue correction value, the pointer 32 is displayed in a state where the pointer 32 is aligned with the central right portion corresponding to the hue correction value (1, 0). The bar 31 indicating the exposure correction value is displayed in a state where the cursor 33 is set to “−1” corresponding to the exposure correction value−1EV.

  As described above, the imaging device 10 of the present embodiment changes the hue correction value and the exposure correction value according to the rotation angle of the imaging device 10. Further, the imaging apparatus 10 displays a preview image based on the changed hue correction value and exposure correction value in accordance with the change of the hue correction value and exposure correction value. Therefore, the user can set the hue correction value and the exposure correction value while referring to the preview image.

  Therefore, according to the imaging apparatus 10 of the present embodiment, it is possible to set image processing parameters intuitively and quickly.

  In the above embodiment, an example in which three types of image processing parameters are set based on the rotation angles θx, θy, and θz output by the acceleration sensor 17 has been described. For example, the setting unit 27 may set one type of image processing parameter based on any one of the rotation angles θx, θy, and θz output by the acceleration sensor 17. The setting unit 27 may set two types of image processing parameters based on any two of the rotation angles θx, θy, and θz output by the acceleration sensor 17. In the above embodiment, an example in which two types of image processing parameters are set at the same time has been shown. However, the image processing parameters to be set may be switched one by one in order by operating the end button 25 a plurality of times.

  In the above embodiment, the setting unit 27 associates the rotation angles θx and θy with the hue correction value, and associates and sets the rotation angle θz and the exposure correction value. However, the present invention is not limited to this. .

  In the above embodiment, the hue correction value is indicated by (m, n) and the exposure correction value is indicated by -3, -2, -1, 0, +1, +2, +3 EV. The correction value is not limited to these. Further, the interval between the hue correction value and the exposure correction value may be set more finely.

  In the above embodiment, the example in which the position of the pointer 32 in the color chart 30 is moved has been described. However, the present invention is not limited to this. For example, the CPU 21 associates the rotation angle θz with the rotation angle of the color chart 30. Then, the CPU 21 may fix the position of the pointer 32 to display on the display unit 15 and rotate the color chart 30 according to the rotation angles θx and θy to display on the display unit 15. The same applies to the cursor 33, and the CPU 21 may fix the position of the cursor 33 and display it on the display unit 15, and move the bar 31 according to the rotation angle θz and display it on the display unit 15.

  In the above embodiment, an example in which the hue correction value and the exposure correction value are set as the image processing parameters has been described. However, the present invention is not limited to this. For example, it is possible to set a saturation correction value, a contrast correction value, a contour enhancement correction value, a soft filter enhancement correction value, and a white balance correction value as image processing parameters relating to the color and brightness of the image.

  For example, the saturation correction value is represented by −3, −2, −1, 0, +1, +2, +3, and the higher the numerical value, the higher the saturation. Note that the saturation correction value made appropriate by the image processing unit 28 is set to 0. The saturation correction value is set to 0 as an initial value in advance. Also in this case, the setting unit 27 resets the saturation correction value according to any of the rotation angles θx, θy, and θz, as in the above embodiment. The same applies to the contrast correction value, the contour emphasis correction value, and the soft filter emphasis correction value, and the description thereof is omitted.

  In addition to the auto white balance correction value, the white balance correction value includes a preset white balance correction value, a white balance correction value suitable for imaging under a light bulb (approximately 3000K), and imaging under a fluorescent lamp (approximately 4200K). White balance correction value suitable for shooting, white balance correction value suitable for imaging under clear sky (about 5200K), white balance correction value suitable for imaging under strobe light (about 5400K), under cloudy weather (about 6000K) White balance correction value suitable for image pickup, and white balance correction value suitable for image pickup in a sunny day (about 8000 K). In this case, the setting unit 27 resets the white balance correction value suitable for imaging under a light source having a high color temperature according to any of the rotation angles θx, θy, and θz.

  Furthermore, it is also possible to set the trimming area, rotate the image, enhance the perspective, set the blurring process, and set the amount and the length of the light flux of the cross filter. For example, the designation of the trimming area is performed by superimposing a frame indicating the trimming area on the preview image and changing the size of the frame in accordance with the rotation angles θx and θy. The image is rotated by rotating the image according to the rotation angle θz. Further, perspective emphasis is performed by narrowing at least one of the four sides of the preview image in accordance with the rotation angle θx.

  The blurring process includes a miniature effect. The miniature effect is a process that makes a diorama look like a close-up by blurring around a selected area. For example, the area is selected by superimposing a frame indicating the area not to be blurred on the preview image and moving the frame in accordance with the rotation angles θz and θy. Further, the setting of the amount and the length of the light beam of the cross filter is performed by changing the amount and the length of the light beam according to the rotation angles θx and θy.

  In the above embodiment, an example is shown in which the setting of the image processing parameter is ended when the end button 25 is operated, but the present invention is not limited to this. For example, when the CPU 21 determines that the acceleration sensor 17 has detected any one or two of the rotation angles θx, θy, θz centered on an axis that is not used for setting image processing parameters. Instead of operating the end button 25, the setting of the image processing parameter may be ended by an instruction from the CPU 21.

  In the above-described embodiment, an example in which image processing parameters are set for RAW image data acquired at the time of shooting has been described, but the present invention is not limited thereto. For example, image processing parameters may be set when an image recorded on the recording medium 19 is reproduced and displayed. In this case, the image processing parameter may be set based on the posture when the playback button (not shown) is operated. Further, the image format to be processed is not limited to RAW image data. For example, image processing may be performed on an image in JPEG format using the image processing parameters set as described above.

  In the above embodiment, the example in which the image processing parameter is set based on the posture immediately after the release button 23 is fully pressed has been described. However, the present invention is not limited to this. For example, immediately after the release button 23 is fully pressed, the user places the imaging device 10 in a desired posture and operates a confirmation button (not shown). The setting unit 27 may set image processing parameters based on the posture at the time when the confirmation button is operated. Thereby, the user can set the posture in which the preview image displayed on the display unit 15 is easy to see as the reference posture.

  Further, if the imaging device 10 is rotated too much, the preview image displayed on the display unit 15 becomes difficult to see. Therefore, ranges of rotation angles θx, θy, and θz that can change image processing parameters are set in advance. Alternatively, it may be set by the user.

  In the above embodiment, an example in which image processing parameters are set for one still image has been described. However, the present invention can also be applied to a plurality of still images. Also, it is possible to set image processing parameters for a moving image of at least a part of the moving image. For example, a case where the rotation angle θx and the exposure correction value are associated with each other and the rotation angle θy and the elapsed time are associated with each other will be described. In this case, the user rotates the imaging device 10 in the rotation direction about the Y axis and the rotation about the X axis during a period in which the moving image to be subjected to image processing is displayed on the display unit 15. Rotate in the direction. The calculation unit 26 updates the inclination vector x based on the rotation angle θx, and the setting unit 27 sets an exposure correction value corresponding to the inclination vector x. Further, the setting unit 27 selects a moving image to be subject to exposure correction from among moving images based on the period during which the rotation angle θy is detected. In response to this, the image processing unit 28 generates a preview image that becomes the exposure correction value set by the setting unit 27 for the selected moving image.

  In the above embodiment, the acceleration sensor 17 converts the detected value into the rotation angle when the posture of the imaging device 10 is changed. However, the present invention is not limited to this. For example, the acceleration sensor 17 may convert the detected value into a rotation angle every 1/30 seconds, for example.

  In the above-described embodiment, the example in which the change in the posture of the imaging device 10 is detected using the acceleration sensor 17 has been described. However, the present invention is not limited to this. For example, a change in the posture of the imaging device 10 may be detected using a gyroscope. The gyroscope may be a mechanical gyroscope such as a rotary type or a vibration type, a fluid type gyroscope such as a gas type, or an optical gyroscope such as an optical fiber gyroscope or a ring laser gyroscope. Furthermore, although the acceleration sensor 17 converted the detected value into a rotation angle and output it to the CPU 21 in the above embodiment, the present invention is not limited to this. For example, the CPU 21 may detect the rotation angle of the imaging device 10 using an output of a value corresponding to the angular velocity of the gyroscope or a value corresponding to the direction of the geomagnetic sensor.

  In the above 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 a computer. Further, the present invention can be similarly applied to an image display device such as a mobile phone having an imaging function, a portable terminal device, and a digital photo frame. Further, the image processing parameter may be set based on the rotation angle of a part of the image processing apparatus such as a controller.

DESCRIPTION OF SYMBOLS 10 ... Imaging device, 15 ... Display part, 17 ... Acceleration sensor, 21 ... CPU, 26 ... Calculation part, 27 ... Setting part, 28 ... Image processing part

Claims (9)

An image processing unit for performing image processing on the image;
A detection unit for detecting a change in posture of at least a part of the own device;
A setting unit that sets image processing conditions in the image processing unit based on the change in the posture detected by the detection unit;
Equipped with a,
The images are a plurality of images obtained continuously at a predetermined time interval,
The detection unit detects a change in the posture with respect to each axis when at least two directions orthogonal to each other are used as axes.
The setting unit selects an image in a period in which a change in the posture around one direction of the at least two directions is detected by the detection unit from the plurality of images acquired in succession, and the other direction An image processing apparatus for setting an image processing condition for a selected image based on a change in the posture with respect to the axis . The image processing apparatus according to claim 1.
The image processing condition is at least one of a processing condition related to the hue of the image, a processing condition related to the brightness of the image, a processing condition related to rotation of the image, or a processing condition related to clipping of a partial region of the image. the image processing apparatus characterized by some. The image processing apparatus according to claim 1 or 2,
An image processing apparatus comprising: a display unit configured to display an image-processed image subjected to the image processing by the image processing unit and an image processing condition used for the image processing . An image processing unit that executes at least one of hue correction and exposure correction on the image;
A detection unit for detecting a change in posture of at least a part of the own device;
A setting unit configured to set a parameter used for at least one of the hue correction and the exposure correction based on the change in the posture detected by the detection unit;
The image processing apparatus comprising: a. The image processing apparatus according to claim 4 .
The detection unit detects a change in the posture when the axis is one direction,
The image processing apparatus according to claim 1, wherein the setting unit sets a parameter used for at least one of the hue correction and the exposure correction based on the change in the posture detected by the detection unit. The image processing apparatus according to claim 4 .
Wherein the detection unit detects a change of the posture for each axis when the two directions you orthogonal to each axis,
The setting unit sets parameters used for the hue correction and exposure correction processing associated with each axis based on the change in posture detected by the detection unit , respectively. Processing equipment. The image processing apparatus according to claim 4 .
The detection unit detects a change in the posture with respect to each axis when three directions orthogonal to each other are used as axes.
The setting unit sets two of the three directions orthogonal to each other as an axis corresponding to the hue correction, and sets the remaining one-direction axis as an axis corresponding to the exposure correction. An image processing apparatus , wherein parameters used for the hue correction and the exposure correction are set based on a change in the posture with respect to each of directional axes . The image processing apparatus according to any one of claims 4 to 7,
A display unit that displays an image-processed image on which at least one of the hue correction and the exposure correction has been executed by the image processing unit, and a parameter used for at least one of the hue correction and the exposure correction; the image processing apparatus, characterized in that it comprises. The image processing apparatus according to any one of claims 1 to 8,
An imaging apparatus comprising: an imaging unit that acquires the image.

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