JP2012156628A - Electronic camera, image processing apparatus, and image processing program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the need for complicated operation for rotation or trimming of an image.SOLUTION: An electronic camera comprises: an imaging part which takes a subject image; a display part which has a rectangular display surface for displaying the image taken by the imaging part; a reference axis setting part which sets a reference axis indicating a horizontal or vertical direction to the image displayed by the display part; a rotation direction indication part which indicates the rotation direction of the image displayed by the display part; and an image rotation part which rotates the image in the rotation direction so that the reference axis becomes horizontal or vertical to a side of the rectangular display surface of the display part.

Description

  The present invention relates to an image processing technique.

  With the recent spread of electronic cameras, it has become easy to take images. However, there is a problem that the electronic camera cannot be held horizontally during shooting, and the subject is shot obliquely. There has also been a desire to edit a photographed image by rotating it to a desired angle. For this reason, for example, a technique for trimming a photographed image, arbitrarily determining an angle, and rotating the image has been studied (see, for example, Patent Document 1).

JP 2006-129101 A

  However, the conventional technique has a problem that a complicated operation must be performed to rotate the image.

  An object of the present invention is to provide an electronic camera, an image processing apparatus, and an image processing program capable of rotating an image without performing a complicated operation.

  An electronic camera according to the present invention provides a photographing unit for photographing a subject image, a display unit having a square display surface for displaying an image photographed by the photographing unit, and an image displayed on the display unit. A reference axis setting unit that sets a reference axis indicating horizontal or vertical, a rotation direction instruction unit that indicates a rotation direction of an image displayed on the display unit, and a display surface in which the reference axis is a rectangular shape of the display unit And an image rotation unit that rotates the image in the rotation direction so as to be horizontal or perpendicular to the sides of the image.

  An image processing apparatus according to the present invention includes a display unit having a square display surface for displaying an image stored in a storage medium, and a reference axis indicating horizontal or vertical with respect to the image displayed on the display unit A reference axis setting unit for setting a rotation direction indicating unit for specifying a rotation direction of an image displayed on the display unit, and a horizontal or vertical direction with respect to a side of a rectangular display surface of the display unit. And an image rotation unit that rotates the image in the rotation direction.

  An image processing program according to the present invention includes an image display process for displaying an image stored in a storage medium on a display medium having a square display surface, and a horizontal display with respect to the image displayed on the display medium. Alternatively, a reference axis setting process for setting a reference axis indicating vertical, a rotation direction instruction process for indicating a rotation direction of an image displayed on the display medium, and a side of a rectangular display surface of the display medium. Image rotation processing for rotating the image in the rotation direction so as to be horizontal or vertical with respect to the image.

  The electronic camera, the image processing apparatus, and the image processing program according to the present invention can rotate an image without performing a complicated operation.

1 is a diagram illustrating a configuration example of an electronic camera 101. FIG. 3 is a diagram illustrating a configuration example of an image processing unit 104. FIG. It is a figure which shows the specific example of the image process of the electronic camera. It is a figure which shows an example of a rotation vector. It is a figure which shows the other example of a rotation vector. 4 is a flowchart illustrating horizontal / vertical correction processing of the electronic camera 101. It is a figure which shows the structural example of the electronic camera 101a. It is a figure which shows the specific example of the image process of the electronic camera 101a. It is a flowchart which shows the horizontal and vertical correction process of the electronic camera 101a. It is a figure which shows the input method of the other reference axis or rotation vector.

  Hereinafter, embodiments of an electronic camera, an image processing apparatus, and an image processing program according to the present invention will be described in detail with reference to the drawings. In the following embodiments, an example of an electronic camera equipped with an image processing apparatus and an image processing program according to the present invention will be described. An image processing program for a personal computer that performs image processing by inputting captured image data Or a single image processing apparatus.

[Configuration Example and Basic Operation of Electronic Camera 101]
First, a configuration example and basic operation of the electronic camera 101 common to the embodiments will be described. FIG. 1 is a block diagram illustrating a configuration example of an electronic camera 101. The electronic camera 101 includes an imaging unit 102, an image buffer 103, an image processing unit 104, a display unit 105, a touch panel 106, a control unit 107, The memory 108, a memory card IF (interface) 109, and an operation unit 110 are included. The blocks other than the operation button 110 are connected to each other via the common bus 111.

  The imaging unit 102 includes, for example, an optical lens, an imaging device, an A / D converter, a timing generator, and the like. Then, the imaging unit 102 captures a subject image in accordance with an instruction from the control unit 107, and takes the captured image into the image buffer 103 via the common buffer 111.

  The image buffer 103 is composed of, for example, a volatile high-speed memory, and temporarily stores an image captured by the imaging unit 102. Further, it is also used as a buffer memory when the image processing unit 104 performs image processing. Alternatively, the captured image stored in the memory card 109a connected to the memory card IF 109 is read out and displayed on the display unit 105, or used as a buffer memory when performing image processing.

  The image processing unit 104 includes, for example, a signal processor, and performs predetermined image processing on the image captured in the image buffer 103. The predetermined image processing is, for example, white balance processing, color interpolation processing, gamma correction processing, saturation enhancement processing, contour outline enhancement processing, or image data compression processing by an image compression method compliant with the JPEG standard or the like. In particular, in the present embodiment, the image processing unit 104 performs image rotation processing, trimming processing, image size adjustment processing, and the like, as will be described later.

  The display unit 105 is configured by a liquid crystal monitor or the like, and displays a captured image stored in the image buffer 103 or a menu screen necessary for operating the electronic camera 101 in accordance with an instruction from the control unit 107.

  The touch panel 106 is disposed on the screen of the display unit 105, and outputs the coordinate position on the screen touched by the user with the finger to the control unit 107.

  The control unit 107 is configured by a CPU that operates according to a program stored therein, for example, and controls the operation of each unit of the electronic camera 101. For example, according to the operation of the operation unit 110 by the user, the power of the electronic camera 101 is turned on / off, the shooting mode is set, and the like. Further, the control unit 107 uses the coordinate position information output from the touch panel 106, for example, when a menu screen is displayed on the display unit 105, whether or not the button displayed on the menu screen has been pressed. Is determined. In particular, in the present embodiment, an operation for rotating an image displayed on the display unit 105 is performed using the touch panel 106.

  The memory 108 is composed of a nonvolatile semiconductor memory such as a flash memory, for example, and stores parameters necessary for the operation of the electronic camera 101. The control unit 107 controls the operation of the electronic camera 101 with reference to these parameters. Note that these parameters are updated as appropriate according to user operations performed via the operation unit 110.

  The memory card IF 109 is an interface for connecting the memory card 109 a to the electronic camera 101. Then, the control unit 107 reads / writes image data from / to the memory card 109 a via the memory card IF 109.

  The operation unit 110 includes a power button 110a, a release button 110b, an operation mode selection dial 110c, a cursor button 110d, a horizontal / vertical correction button 111e, and the like. The user operates these operation buttons to use the electronic camera 101. For example, the operation mode selection dial 110c selects a still image shooting mode, a moving image shooting mode, a playback mode of a shot image, or the like. Further, the cursor button 110 d performs operations on the menu screen displayed on the display unit 105 in parallel with the touch panel 106. In particular, in this embodiment, when the horizontal / vertical correction button 111e is pressed, the control unit 107 and the image processing unit 104 rotate the image displayed on the display unit 105 so that the subject in the image is horizontal or vertical. The process which correct | amends to become is performed.

  The above is the configuration and basic operation of the electronic camera 101. In the case of a single image processing apparatus according to the present invention instead of the electronic camera 101, the image capturing block such as the image capturing unit 102 and the release button 110b of the operation unit 110 in FIG. The control unit 107 corresponds to the control unit of the image processing apparatus, reads captured image data from the memory card 109a to the image buffer 103, and the image processing unit 104 performs image rotation processing, trimming processing, and image size adjustment processing. Etc.

[Configuration Example of Image Processing Unit 104]
Next, the image processing unit 104 will be described in detail. As described above, the image processing unit 104 performs processing for rotating the image displayed on the display unit 105 in addition to general image processing such as white balance processing and color interpolation processing. In this process, when the horizontal / vertical correction button 111e of the operation unit 110 is pressed, the control unit 107 instructs the image processing unit 104 to perform a rotation process.

  FIG. 2 is a diagram illustrating processing blocks related to image rotation processing performed by the image processing unit 104. In FIG. 2, a block for performing general image processing is omitted for easy understanding.

  In FIG. 2, the image processing unit 104 basically includes a reference axis setting processing unit 201, a rotation direction setting processing unit 202, a rotation processing unit 203, and a trimming processing unit 204. Furthermore, as will be described later, an image size adjustment processing unit 205 may be provided. Hereinafter, each process will be described with reference to FIG.

  When the image 300 displayed on the screen 105a of the display unit 105 is rotated, the reference axis setting processing unit 201 performs a process of setting a reference axis to be aligned horizontally or vertically. For example, FIG. 3A shows an example of a photographed image 300 displayed on the screen 105a of the display unit 105, and a person of the subject 301 is photographed while tilting to the left. Then, the reference axis setting processing unit 201 draws a straight line A on a portion where the user traces the screen 105a of the display unit 105 with a finger, and sets the straight line A as a reference axis as shown in FIG. To do.

  The rotation direction setting processing unit 202 performs a process of setting the rotation direction on the screen 105a on which the straight line A serving as the reference axis is drawn. For example, as shown in FIG. 3C, the straight line B is set as a rotation vector at a portion where the user traces the screen 105a on which the straight line A is drawn with a finger.

  The rotation processing unit 203 performs a process of rotating the image 300 in the screen 105a on which the straight line B serving as a rotation vector is set. For example, as shown in FIG. 3D, the image 300 on which the straight line A is drawn is rotated so that the straight line A is perpendicular to the screen 105a. Here, the rotation processing unit 203 automatically adjusts the straight line A to the nearest horizontal or vertical position. Further, the process of making the straight line A perpendicular to the screen 105a is, for example, as shown in FIGS. 3C and 3D, based on the pixel coordinates of the screen 105a and the image 300, the straight line A and the screen 105a. Since the angle θ with the direction is known, a rotated image can be obtained by performing coordinate rotation calculation such as well-known affine transformation.

  The trimming processing unit 204 creates the image 302 by trimming the image 300 so that the horizontal and vertical directions are parallel to the screen 105a because the rotated image 300 has a portion that protrudes from the screen 105a. In the trimming, the image 300 is trimmed on a rectangle so that the image 302 becomes as large as possible. As an example of the trimming method, for example, when the image 302 is a rectangular area having the same aspect ratio as the screen 105a, the four corners of the rectangular area are expanded with reference to the midpoint of the straight line A as shown in FIG. The maximum trimming size is a state in which any one of the four corners of the image 302 hits the side of the image 300. In this way, a trimmed image 302 as shown in FIG. 3F can be obtained.

  The image size adjustment processing unit 205 performs a process of enlarging the trimmed image 302 to the same size as the captured image 300. Since the trimmed image 302 is smaller than the screen 105a as shown in FIG. 3 (f), the image size differs from other captured images stored in the memory card 109a. . Therefore, the image size adjustment processing unit 205 performs an enlargement process on the image 302 so as to have the same size as the image 300 as illustrated in FIG. Note that the enlargement process can be performed, for example, by replacing one pixel with two vertical and horizontal pixels or by pixel interpolation.

  In the description of FIG. 3C, the rotation vector is determined only by the direction of the straight line B. As shown in FIG. 3D, the rotation processing unit 203 matches the horizontal or vertical of the screen 105a with the straight line A. However, instead of the straight line B, as shown in FIG. 4A, a line C that is a combination of two straight lines indicating two directions may be input as the rotation direction. Absent. In this case, once the straight line A is aligned with the vertical direction of the screen 105a as shown in FIG. 3C, it is further rotated in the same direction (clockwise in the case of FIG. 3), and FIG. As shown in FIG. 4, the horizontal direction of the screen 105a is adjusted. The line C may be combined with three straight lines indicating three directions so that a larger rotation angle can be designated. Or you may make it designate with the curve D and the curve E, as shown in FIG.4 (d). In this case, the rotation angle can be specified by the length of the curve D or the curve E.

  In the rotation process of FIG. 3 (d), the rotation is performed around the midpoint of the straight line A as shown in FIG. 5 (a). However, the center of rotation is rotated as shown in FIG. 5 (b). It may be possible to move. In this case, when the straight line A in FIG. 3B is set, the center point 311 is displayed on the screen 105a as shown in FIG. 5A, and the position of the center 311 is straightened by the cursor button 110d of the operation unit 110, for example. You may enable it to move along A. For example, when the down arrow key of the cursor button 110d is pressed, the center 311 moves below the straight line A as shown in FIG. Similarly, the center 311 can be moved above the straight line A by pressing the up arrow key of the cursor button 110d. Alternatively, as shown in FIG. 5C, the user's index finger 312 may be fixed to the center 311, and the rotation vector may be inputted by rotating the screen 105 a like a compass with the middle finger 313.

  In this way, the electronic camera 101 according to the present embodiment displays the subject 301 photographed obliquely on the screen 105a as shown in FIGS. 3 (f) and 3 (g), as shown in FIG. 3 (a). On the other hand, correction that rotates horizontally or vertically can be performed.

[Horizontal / Vertical correction processing]
Next, horizontal / vertical correction processing will be described with reference to the flowchart of FIG.

  (Step S <b> 101) The user displays an image captured using the electronic camera 101 or an image read from the memory card 109 a on the display unit 105.

  (Step S102) When the user presses the horizontal / vertical correction button 111e of the operation unit 110, the control unit 107 and the image processing unit 104 start horizontal / vertical correction processing.

  (Step S <b> 103) The control unit 107 instructs the image processing unit 104 to draw the straight line A according to the coordinate information input from the touch panel 106. Then, the reference axis setting processing unit 201 of the image processing unit 104 performs processing for setting the reference axis according to the coordinate information input from the control unit 107. For example, the reference axis setting processing unit 201 draws a straight line A input by the user on the touch panel 106 on the image 300 of the screen 105a as illustrated in FIG.

  (Step S104) The control unit 107 determines whether or not the input of the straight line A by the user and the setting by the image processing unit 104 have been completed. If not completed, the control unit 107 returns to step S103. Proceed to

  (Step S105) The control unit 107 inputs the straight line B according to the coordinate information input from the touch panel 106, and instructs the image processing unit 104 to set a rotation vector. Then, the rotation direction setting processing unit 202 of the image processing unit 104 performs processing for setting a rotation vector according to the coordinate information input from the control unit 107. For example, the rotation direction setting processing unit 202 uses the straight line B input by the user on the touch panel 106 as the rotation vector as illustrated in FIG.

  The straight line B may be drawn on the image 300 on the screen 105a. However, since the next step S106 and step S107 are executed immediately after the setting of the straight line B, the straight line B is drawn. You don't have to. Alternatively, after the straight line B is displayed for a predetermined time (for example, 1 second) so that the user can check the straight line B, the process may proceed to the next step S106 and step S107. You may make it perform. In any case, the straight line A and the straight line B are not rewritten on the image data of the image 300, but are added to the display data for display on the screen 105a. And the straight line B does not remain.

  (Step S106) The control unit 107 determines whether or not the input of the straight line B by the user and the setting by the image processing unit 104 have been completed. If not completed, the control unit 107 returns to step S105. Proceed to

  (Step S107) The rotation processing unit 203 of the image processing unit 104 performs a process of rotating the image 300 displayed on the display unit 105 according to the rotation vector of the straight line B with reference to the set straight line A. In this state, the image 300 after rotation shown in FIG.

  (Step S108) The trimming processing unit 204 of the image processing unit 104 performs trimming processing of the rotated image. For example, the trimming processing unit 204 performs the trimming process as illustrated in FIG. 3E to obtain a trimmed image 302 as illustrated in FIG.

  (Step S109) The image size adjustment processing unit 205 of the image processing unit 104 performs a process of enlarging the trimmed image so that the image has the same size (the same number of pixels) as the captured image. For example, as shown in FIG. 3G described above, the image size adjustment processing unit 205 performs an enlargement process so that the trimmed image 302 has the same size as the image 300 at the time of shooting, and the enlarged image. 303 is obtained. Note that the next storage process may be performed without performing this process.

  (Step S <b> 110) The control unit 107 stores the image processed by the image processing unit 104 stored in the image buffer 103 in the memory card 109 a via the memory card IF 109. For example, when the enlargement process of step S109 is not performed, the image data of the trimmed image 302 of FIG. 3F is stored in the memory card 109a, and when the enlargement process of step S109 is performed, FIG. Is stored in the memory card 109a.

  In this way, the electronic camera 101 according to the present embodiment displays the subject 301 photographed obliquely on the screen 105a as shown in FIGS. 3 (f) and 3 (g), as shown in FIG. 3 (a). On the other hand, correction that rotates horizontally or vertically can be performed.

(Modification)
Next, an electronic camera 101a in FIG. 7 will be described as a modified example of the electronic camera 101 in FIG. 1 described above. In FIG. 7, the same reference numerals as those in FIG. 7 is different from FIG. 1 in that a gyro sensor 112 is added. The gyro sensor 112 is a sensor that senses acceleration, and is a sensor that detects the tilt angle of the casing of the electronic camera 101. In particular, in the electronic camera 101 according to this embodiment, the gyro sensor 112 detects a rotation angle on a two-dimensional plane including the display surface of the display unit 105.

  Information on the tilt angle output from the gyro sensor 112 is output to the rotation direction setting processing unit 202 of the image processing unit 104 described with reference to FIG. Then, the rotation direction setting processing unit 202 uses information on the inclination angle of the gyro sensor 112 instead of the rotation vector by the straight line B described in the previous embodiment.

  Next, processing of the electronic camera 101a in this modification will be described. FIG. 8 is a diagram corresponding to FIG. 3 and is a diagram showing a state of the display unit 105 side of the casing of the electronic camera 101a. For example, FIG. 8A corresponds to FIG. 3A and shows an example of a photographed image 300 displayed on the screen 105a of the display unit 105, and a person of the subject 301 is photographed while tilting to the left. Then, the reference axis setting processing unit 201 draws a straight line A on a portion where the user traces the screen 105a of the display unit 105 with a finger, and sets the straight line A as a reference axis as shown in FIG. 8B. To do. The processing up to the setting of the reference axis is the same as in FIG.

  Here, the user performs an operation of setting the rotation direction on the rotation direction setting processing unit 202. For example, as illustrated in FIG. 8C, the user rotates the casing of the electronic camera 101 a in the direction in which the image 300 is to be rotated. The gyro sensor 112 detects this movement and outputs information on the tilt angle to the rotation direction setting processing unit 202. The rotation direction setting processing unit 202 sets the rotation vector in the clockwise direction because it can be seen from the information on the inclination angle input from the gyro sensor 112 that the image is inclined, for example, clockwise. Here, since it is only necessary to know the rotation direction from the information output from the gyro sensor 112, accurate angle information is unnecessary.

  Then, the rotation processing unit 203 performs a process of rotating the image 300 in the screen 105a according to the rotation vector set by the rotation direction setting processing unit 202. For example, as shown in FIG. 8D, the image 300 on which the straight line A is drawn is rotated so that the straight line A is perpendicular to the screen 105a. Here, the rotation processing unit 203 automatically adjusts the straight line A to the nearest horizontal or vertical position as in the case of FIG. If the tilt angle of the gyro sensor 112 is less than or equal to a preset threshold value, it may be adjusted to the nearest horizontal or vertical position, and if it is more than the threshold value, it may be adjusted to the next horizontal or vertical position.

  Further, after the rotation in FIG. 8D, an operation for determining the position after the rotation may be performed. For example, the rotation position is determined by pressing the release button 110b (or pressing the horizontal / vertical correction button 111e) after the rotation. This makes it possible to continue the rotation process. For example, the user can freely rotate the image 300 clockwise or counterclockwise from the state of FIG. 8D by further rotating the housing of the electronic camera 101a as shown in FIG. 8C. . Then, the rotation position is determined by pressing the release button 110b (or pressing the horizontal / vertical correction button 111e) at a desired position.

  When the rotation direction setting processing unit 202 sets the rotation vector from the tilt angle of the gyro sensor 112, it may be recognized as the rotation vector only when the angle change of the gyro sensor 112 is equal to or greater than a preset threshold value. Thereby, it is possible to prevent malfunction when the electronic camera 101a that the user has is moving gently.

  Then, after the rotation process is completed, the trimming processing unit 204 performs a process of trimming the portion of the rotated image 300 that protrudes from the screen 105a, as shown in FIG. 3E, as shown in FIG. A trimmed image 302 is created. The trimming method is as described above. Further, according to the setting of the electronic camera 101a, the image size adjustment processing unit 205 performs a process of enlarging the trimmed image 302 to the same size as the image 300 at the time of shooting, and as illustrated in FIG. A later image 303 may be created.

  In this way, the electronic camera 101a according to the present modification example displays the subject 301 photographed obliquely on the screen 105a as shown in FIGS. 8 (e) and 8 (f), as shown in FIG. 8 (a). On the other hand, correction that rotates horizontally or vertically can be performed. In particular, in this modification, the rotation direction is designated by an operation of tilting the housing of the electronic camera 101a, and thus can be used sensuously.

  Next, horizontal / vertical correction processing of the electronic camera 101a according to the modification will be described with reference to the flowchart of FIG. The flowchart of FIG. 9 corresponds to FIG. 6 described above, and the same step number indicates the same process. Only the parts different from FIG. 6 will be described below. In FIG. 9, the process from the step S101 to the step S103 until the reference axis is set is the same as that in FIG.

  (Step S201) The user rotates the casing of the electronic camera 101a in a direction in which the image displayed on the screen 105a of the display unit 105 is to be rotated. When the gyro sensor 112 detects the rotation of the casing, the process proceeds to the next step. When the gyro sensor 112 does not detect the rotation of the casing, the process waits in step S201.

  (Step S <b> 202) The rotation direction setting processing unit 202 of the image processing unit 104 performs a process of setting a rotation vector according to the tilt angle information input from the gyro sensor 112. This process is a process corresponding to step S105 in FIG.

  The processing in the next step S107 is the same as that in FIG. 6, and the rotation processing unit 203 of the image processing unit 104 rotates the image 300 displayed on the display unit 105 based on the set straight line A according to the rotation vector. Process. In this state, the image 300 after rotation shown in FIG.

  (Step S203) The control unit 107 determines whether or not the gyro sensor 112 has detected the tilt of the housing. If the gyro sensor 112 detects the tilt of the casing, the process returns to step S202 to perform the rotation process again. If the gyro sensor 112 does not detect the tilt of the casing, the process proceeds to the next step.

  (Step S204) The control unit 107 determines whether or not the user has pressed the release button 110b of the operation unit 110 in order to determine the position after the rotation. Here, the position after rotation is determined by pressing the release button 110b, but the position after rotation may be determined by pressing the horizontal / vertical correction button 111e. In this case, it is determined whether or not the horizontal / vertical correction button 111e is pressed in this processing step. If the release button 110b is pressed, the process proceeds to the next step. If the release button 110b is not pressed, the process returns to step S203 to determine whether to continuously rotate. Note that if the process of continuously rotating is not performed, the processes of steps S203 and S204 are not necessary.

  (Step S205) The control unit 107 outputs a command for determining the position after rotation to the image processing unit 104, and the image processing unit 104 determines the position after rotation.

  When the position after rotation is determined, the trimming process in step S108 is performed as in FIG. 6, and when the image size is further adjusted, the image size enlargement process is performed in step S109. In step S110, the control unit 107 stores the image processed by the image processing unit 104 stored in the image buffer 103 in the memory card 109a via the memory card IF 109. For example, when the enlargement process of step S109 is not performed, the image data of the trimmed image 302 of FIG. 8E is stored in the memory card 109a, and when the enlargement process of step S109 is performed, FIG. Is stored in the memory card 109a.

  In this way, the electronic camera 101a according to the present modification example displays the subject 301 photographed obliquely on the screen 105a as shown in FIGS. 8 (e) and 8 (f), as shown in FIG. 8 (a). On the other hand, correction that rotates horizontally or vertically can be performed. In particular, in this modification, the rotation direction is designated by an operation of tilting the housing of the electronic camera 101a, and thus can be used sensuously.

  In the above embodiment, the case where the present invention is applied to the electronic camera 101 and the electronic camera 101a has been described. However, in the case of a single image processing apparatus, the imaging unit 102 and the operation unit 110 in FIG. 1 or FIG. The image capturing block such as the release button 110b may be removed. The control unit 107 corresponds to the control unit of the image processing apparatus, reads captured image data from the memory card 109a to the image buffer 103, and the image processing unit 104 performs image rotation processing, trimming processing, and image size adjustment processing. And so on.

  The image processing program downloaded via a storage medium storing an image program for performing processing according to the flowchart of FIG. 6 and the flowchart of FIG. 9 or a communication medium such as the Internet is installed in a computer such as a personal computer and executed. It may be. When processing is performed by a personal computer in this way, the reference axis and the rotation vector can be set using a pointing device such as a mouse instead of the touch panel 106 of FIG. For example, as shown in FIG. 10A, a straight line A serving as a reference axis is drawn with a mouse cursor 401 displayed on the monitor screen 105a of the personal computer (FIG. 10A), or a straight line B serving as a rotation vector is displayed. Can be drawn (FIG. 10B). Alternatively, the rotation vector can be specified by moving the mouse 402 itself in the right direction or the left direction as shown in FIG. Note that processes such as trimming and image size enlargement are the same as those of the electronic camera 101 and the electronic camera 101a.

  As described above, the electronic camera 101 and the electronic camera 101a according to each embodiment, or an image processing program executed by a computer such as a dedicated image processing apparatus or a personal computer that does not have the imaging unit 102, A straight line as a reference axis is arbitrarily set and displayed on the screen of the display unit 105, and the displayed image is rotated so that the straight line is vertical or horizontal with respect to each side of the screen. Trim the image in a rectangular shape so that This makes it possible to correct the image taken obliquely with respect to each side of the screen by rotating the image so that it is horizontal or vertical, and the subject is horizontal or vertical at the time of shooting. You can easily shoot without worrying about whether or not you are.

  As described above, the electronic camera, the image processing apparatus, and the image processing program according to the present invention have been described by way of examples in the respective embodiments. However, the electronic camera, the image processing apparatus, and the image processing program may be implemented in various other forms without departing from the spirit or main features thereof. can do. Therefore, the above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. The present invention is defined by the claims, and the present invention is not limited to the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

DESCRIPTION OF SYMBOLS 101 ... Electronic camera; 102 ... Imaging part; 103 ... Image buffer; 104 ... Image processing part; 105 ... Display part; 106 ... Touch panel; ... Memory 109... Memory card IF 110 110 Operation unit 111 Common bus 201 201 Reference axis setting processing unit 202 202 Rotation direction setting processing unit 203 Rotation processing unit; 204, trimming processing unit, 205, image size adjustment processing unit, 112, gyro sensor, 110a, power button, 110b, release button, 110c, operation mode Selection dial; 110d ... cursor button; 111e ... horizontal / vertical correction button

Claims (8)

(Basic claims)
A shooting section for shooting a subject image;
A display unit having a square display surface for displaying an image captured by the imaging unit;
A reference axis setting unit for setting a reference axis indicating horizontal or vertical with respect to the image displayed on the display unit;
A rotation direction instruction unit for instructing the rotation direction of the image displayed on the display unit;
An image rotation unit that rotates the image in the rotation direction so that the reference axis is horizontal or vertical with respect to a side of a rectangular display surface of the display unit;
An electronic camera comprising: The electronic camera according to claim 1,
A trimming unit for trimming the rotated image by the image rotation unit;
An electronic camera, wherein the trimming unit further includes a recording unit that records the trimmed image on a storage medium. (Adjust image size after trimming)
The electronic camera according to claim 2,
An electronic camera, further comprising: an image size adjustment unit that adjusts a size of an image after the trimming unit is trimmed to the same size as an image captured by the imaging unit. (Touch panel)
The electronic camera according to any one of claims 1 to 3,
An electronic camera, wherein a touch panel for setting the reference axis and the rotation direction is further provided on the display unit. (Image processing device complaints such as personal computers)
A display unit having a square display surface for displaying an image stored in a storage medium;
A reference axis setting unit for setting a reference axis indicating horizontal or vertical with respect to the image displayed on the display unit;
A rotation direction instruction unit for instructing the rotation direction of the image displayed on the display unit;
An image processing apparatus comprising: an image rotation unit configured to rotate the image in the rotation direction so that the reference axis is horizontal or vertical with respect to a side of a rectangular display surface of the display unit. The image processing apparatus according to claim 5.
An image processing apparatus, further comprising a trimming unit for trimming the rotated image by the image rotation unit. (Compatible with mouse)
The image processing apparatus according to claim 5 or 6,
An image processing apparatus, further comprising a pointing unit for setting the reference axis and the rotation direction. (Program claims)
An image display process for displaying an image stored in the storage medium on a display medium having a square display surface;
A reference axis setting process for setting a reference axis indicating horizontal or vertical with respect to an image displayed on the display medium;
A rotation direction instruction process for instructing a rotation direction of an image displayed on the display medium;
An image rotation process for rotating the image in the rotation direction so that the reference axis is horizontal or vertical with respect to a side of the rectangular display surface of the display medium. Image processing program.

Images