JP4047799B2 - Mobile phone with camera and image tilt correction method thereof - Google Patents

Description

The present invention relates to a mobile phone, and more particularly to a camera-equipped mobile phone, a mobile terminal, and an image tilt correction method thereof that take images of subjects such as landscapes and people and transmit / receive to / from a communication partner.

  Mobile phones have become more sophisticated and have various functions that satisfy the needs of users (users). One of these is a built-in camera that uses a CCD (electrical coupling element), which captures images of landscapes, people, etc., and transmits them to the communication partner with audio, enabling simple and quick communication or communication. ing. Further, due to mass production of CCD and price reduction, the performance (for example, resolution) of a camera built in a mobile phone is approaching that of a general digital camera.

  However, unlike a digital camera, a mobile phone is generally used with one hand, so it is difficult to hold the mobile phone at a correct angle and stably with respect to an object to be photographed. Therefore, the captured image may be tilted or shaken, and its correction becomes a problem.

  In order to solve such a problem, several techniques have been disclosed. For example, a tilt information detection unit is provided to reduce blurring of captured images in a videophone, enable high-quality screen display, and increase the compression rate of captured image data to reduce the amount of transmitted data. A method and an apparatus thereof are disclosed (for example, see Patent Document 1).

  In addition, a tilt display device and a display for a video device, which are provided with a tilt detection unit and a tilt angle calculation unit, can display a tilt with respect to the horizontal axis of the video device main body on a monitor screen and can correct the tilt with a lightweight and compact configuration. A method and a recording medium are also disclosed (for example, see Patent Document 2).

FIG. 8 is a block diagram showing the overall configuration of a conventional mobile videophone. The video phone 1 includes a camera unit 2, an antenna 3, an image stabilization switch 11, a control unit 13, an image input unit 15, a memory unit 17, an image correction unit 21, an audio processing unit 23, a wireless processing unit 25, a display unit 28, The input operation unit 30, the tilt detection unit 37, the zoom setting unit 39, and the image processing unit 41 are configured.

The camera unit 2 shoots an image of a shooting target or subject desired by the user and loads the image into the image input unit 15. The camera shake correction switch 11 selects ON / OFF of camera shake correction and outputs a selection signal 12 to the control unit 13. The tilt detection unit 37 outputs tilt information 38 corresponding to the tilt of the camera 2 to the control unit 13. The image input unit 15 reads a captured image of the camera unit 2 in accordance with a control signal 32 from the control unit 13, converts it into image data 16, and outputs the image data 16 to the memory unit 17. The memory unit 17 stores the image data from the image input unit 15 according to the control signal 33 from the control unit 13. Further, the memory unit 17 reads out the image data 18 by the control signal 33 and outputs it to the image correction unit 21. The image correction unit 21 corrects the image data 18 by the signal 43 from the control unit 13 based on the tilt information 38 described above.

  The control unit 13 performs control related to image processing and communication with the wireless telephone communication network, and includes a selection signal 12 from the camera shake correction switch 11, a key signal 31 from the input operation unit 30, and a tilt detection unit 37. In response to the tilt information 38, the image data 29 is output to the display unit 28, the audio signal 24 is output to the audio processing unit 23, the signal 27 is output to the wireless processing unit 25, the control signal 32 is output to the image input unit 15. The control signal 33 is transmitted to the memory unit 17, the setting information 40 is transmitted to the zoom setting unit 39, the signal 42 is transmitted to the image processing unit 41, and the correction signal 43 is transmitted to the image correction unit 21.

  The voice processing unit 23 encodes the call signal and decodes the received voice data (codec processing), and transmits and receives the voice signal 24 to and from the control unit 13. The image processing unit 41 performs processing such as compression / decompression of the signal 42. The zoom setting unit 39 detects focal length setting information 40 related to perspective (zoom) shooting with the camera unit 2. The radio processing unit 25 performs transmission / reception of the signal 27 such as setting of the transmission / reception signal, demodulation / modulation, reception field strength detection (RSSI) and TDMA (Time Division Multiple Access) processing with the control unit 13. In order to make a radio line connection (air interface) with a cell base station (not shown) via the antenna 3, it is converted into a high-frequency signal 26. The display unit 28 is a display device such as a liquid crystal display panel (LCD) that displays the image data 29. The input operation unit 30 includes power ON / OFF, a numeric keypad, a function selection key (function key), and the like, and outputs a key signal 31 to the control unit 13.

Here, the image correction unit 21 uses an image captured by the camera unit 2 as a signal 43 corresponding to the image data 16 output from the image input unit 15 and the tilt information 38 detected by the tilt detection unit 37 during camera shooting. The image correction is ON / OFF controlled. When the camera shake (tilt) correction is not performed, the camera shake (tilt) correction is not performed by setting the camera shake correction switch 11 to OFF. The display unit 28 displays the image data 29 output from the control unit 13. Note that the inclination detecting means of the inclination detecting unit 37 in the above-described prior art has been performed by a mechanical change including ON / OFF of the contact point due to the movement of mercury.
JP 2001-160958 A (page 4-5, FIG. 1) Japanese Patent Laid-Open No. 2002-77712 (page 5-6, FIG. 8)

As described above, it has been difficult for the conventional mobile phone terminal to accurately and quickly correct the inclination of the image. Accordingly, an object of the present invention is to provide a camera-equipped mobile phone and an image tilt correction method for solving such a problem.

In order to solve the above-described problems, the camera-equipped mobile phone and the image tilt correction method according to the present invention employ the following special configuration.

(1) by imaging a subject in a transmission configured to be capable mobile phone with a camera to the communication partner reads the image data stored in the memory as well as stored in the memory by a built-in camera,
A tilt detection plate including a center opening on the front surface of the camera and a finder plate formed with a recognition hole around the center opening and rotatable by gravity;
Image correction for capturing the subject with the camera through the tilt detection plate, detecting the tilt of the camera from the position of the image captured through the recognition hole, and correcting the image captured by the camera and stored in the memory Department and
The camera-equipped mobile phone equipped with.

(2) The camera-equipped mobile phone according to (1), wherein the finder plate of the tilt detection plate is attached to a base plate fixed to the main body of the mobile phone by a bearing structure .

( 3 ) In an image inclination correction method for a camera-equipped mobile phone, the subject is photographed with a built-in camera and captured in a memory, the image data captured in the memory is read out, the image inclination is corrected and transmitted to a communication partner.
Providing a finder plate having a recognition hole for instructing a vertical direction on the front surface of the camera at the time of photographing a subject by the camera;
Detecting the tilt angle of the camera by photographing the subject through the viewfinder plate;
Correcting the tilt of the image data read from the memory based on the detected tilt angle of the camera, and transmitting the tilt-corrected image data to the communication partner. Method.

( 4 ) The image tilt correction method for a camera-equipped mobile phone according to ( 3 ), further including a selection step of selecting image data with corrected image tilt or uncorrected image tilt when transmitting the image data to a communication partner.

(6) In a mobile terminal that captures an image of a subject with a camera and stores the image in a memory unit and reads out and transmits image data stored in the memory unit.
The camera body is provided with a tilt detection plate for detecting left and right tilt data of the camera using gravity, and reading of image data stored in the memory unit according to the tilt data detected by the tilt detection plate is provided. A portable terminal that controls the camera to obtain an image in which the tilt of the camera is corrected.

(7) A camera-equipped mobile phone capable of correcting the tilt of image data by detecting the horizontal tilt of the camera-equipped mobile phone that captures and captures an image of a subject with a built-in camera and transmits an audio signal to a communication partner. In the phone tilt correction method,
The image data captured by the camera is stored in the memory unit, the tilt data in the horizontal direction with respect to the vertical direction of the camera is captured using gravity, and the readout of the image data stored in the memory unit is stored in the tilt data. An inclination correction method for a camera-equipped mobile phone that reads out and corrects the inclination accordingly.

  (8) The tilt correction method for a camera-equipped mobile phone according to (7), wherein the user can select whether or not to perform tilt correction of the image data.

(9) In a portable terminal that captures an image of a subject with a camera and stores it in a memory unit, and reads and transmits image data stored in the memory unit.
The camera body is provided with a tilt detection plate for detecting left and right tilt data of the camera using gravity, and reading of image data stored in the memory unit according to the tilt data detected by the tilt detection plate is provided. A portable terminal that controls the camera to obtain an image in which the tilt of the camera is corrected.

According to the camera-equipped mobile phone and the mobile terminal and the tilt correction method thereof according to the present invention, the following remarkable effects in practical use can be obtained. In other words, since using the tilt detection plate which rotates by utilizing the gravity obtaining inclination data in the horizontal direction with respect to the vertical direction of the camera phone, the normal image the image data by the inclination data accurately and quickly corrected It can be displayed on the display unit and transmitted to the communication partner. In particular, in the case of a mobile phone camera that is captured with one hand, it is difficult to stably hold the camera in a correct (horizontal) state, and the tilt becomes unnatural depending on the subject. Is valid. Further, the tilt detection plate has a simple configuration and can be easily mounted around the camera, in particular, around its optical system (lens or the like). Furthermore, a switch is provided so that the tilt of the image displayed on the display unit can be displayed either corrected or uncorrected, and the image transmitted to the communication partner can be selected to be either tilt corrected or uncorrected.

  Hereinafter, the configuration and operation of a preferred embodiment of a camera-equipped mobile phone according to the present invention will be described in detail with reference to the accompanying drawings. For convenience of explanation, the same reference numerals are used for the constituent elements corresponding to the constituent elements of the prior art described above. In the following description, differences from the prior art will be mainly described.

  FIG. 1 is a block diagram showing the overall configuration of a first embodiment of a camera-equipped mobile phone according to the present invention. The camera-equipped mobile phone 1A according to the present invention includes a camera unit 2, an antenna 3, a tilt (or camera shake) correction switch 11, a control unit 13, a tilt detection plate 14, an image input unit 15, a memory unit 17, a tilt detection unit 19, and an image. The correction unit 21, the voice processing unit 23, the wireless processing unit 25, the display unit 28, and the input operation unit 30 are configured.

Here, the main functions of the components of the camera-equipped mobile phone 1A will be described. Inclination correction switch 11 outputs the selection signal 12 to the control unit 13 selects the ON / OFF of inclination (shake) correction. The tilt detection plate 14 is disposed on the front surface of the camera unit 2 for photographing. The camera unit 2 photographs a subject such as a landscape or a person through the tilt detection plate 14.

  The image input unit 15 reads a captured image according to a control signal 32 from the control unit 13, converts it into image data 16, and outputs the image data 16 to the memory unit 17. The memory unit 17 accumulates the above-described image data 16 by the control signal 33 from the control unit 13, reads out the image data 18 by the control signal 33, and outputs it to the inclination detection unit 19 and the image correction unit 21. The tilt detection unit 19 receives the image data 18 and outputs tilt data 20 corresponding to the tilt angle of the camera 2 to the image correction unit 21. When the inclination correction is selected (when the inclination correction switch 11 is turned on), the image correction unit 21 performs angle correction on the image data 18 corresponding to the inclination angle of the camera 2 by the control signal 34 from the control unit 13, and the inclination correction is performed. No image data 22 is output to the control unit 13. On the other hand, when tilt correction is not selected (tilt correction switch 11 is OFF), the image data 18 tilted by the control signal 34 is not corrected for the angle corresponding to the tilt angle of the camera 2 and remains tilted. The image data 22 is output to the control unit 13.

  The control unit 13 receives the selection signal 12, the image data 22, and the key signal 31, outputs the control signal 32, the control signal 33, and the control signal 34, and transmits and receives the audio signal 24 and the signal 27. The voice processing unit 23 encodes the call signal and decodes the received voice data (performs codec processing), and transmits and receives the voice signal 24. The wireless processing unit 25 transmits / receives a signal 27 such as transmission / reception frequency setting, demodulation / modulation, reception electric field strength detection (RSSI), and TDMA processing to the control unit 13 and connection with a cell base station (not shown). The (air interface) is converted to a high frequency signal 26 for performing through the antenna 3. The display unit 28 displays the image data 29. The input operation unit 30 includes a power on / off (ON / OFF), a numeric keypad, a function selection key, and the like, and outputs a key signal 31.

  Next, the detailed configuration and operation of the camera-equipped mobile phone 1A of the present invention shown in FIG. 1 will be described with reference to FIGS. FIG. 2 shows a state in which the tilt detection plate 14 is mounted on the main body of the camera-equipped mobile phone 1A. FIG. 3 is a flowchart showing the tilt correction operation of the camera-equipped mobile phone 1A according to the present invention. FIG. 4 is a diagram for explaining the definition of the inclination of the mobile phone. FIG. 5 is a diagram illustrating the relationship between the state of the mobile phone and the image. FIG. 6 is a diagram illustrating a method of image correction processing.

  First, the configuration and operation of the tilt detection plate 14 will be described with reference to FIGS. FIG. 2A is a front view of the camera-equipped mobile phone 1A on which the tilt detection plate 14 is mounted. 2B and 2C are views showing the state of the inclination detection plate 14 when there is no inclination and when there is an inclination, respectively.

  As shown in FIG. 2A, the tilt detection plate 14 is composed of a finder plate 14a, balls 14e, and a base plate 14f. The finder plate 14a and the base plate 14f have a bearing structure via balls 14e, and the base plate 14f is fixed to the main body of the camera-equipped mobile phone 1A.

  In the finder plate 14a, a camera photographing through hole (through hole) 14b is formed in the center, and a recognition hole 14c for recognizing an inclination angle is formed outside the through hole 14b. The weight 14d is disposed at a position obtained by rotating the finder plate 14a through the recognition hole 14c by 180 degrees. Therefore, as shown in FIG. 2C, even when the camera-equipped mobile phone 1A is tilted, the recognition hole 14c continues to maintain the vertical direction in the finder plate 14a due to the weight 14d. That is, the tilt detection plate 14 can reliably detect the tilt of the camera-equipped mobile phone 1A by using the gravity by the weight 14d and by the bearing configuration. The inclination data from the inclination detection plate 14 can be read by the user or automatically read by a known rotational position reading means.

  In the camera-equipped mobile phone 1A of this embodiment, the description will be made assuming that the display unit 28 is disposed on the front surface and the camera unit 2 is disposed on the back surface. First, a case where no tilt correction is performed will be described. For example, as shown in FIG. 5A, it is assumed that the camera tilt angle is + 30 ° during camera shooting. Since the inclination correction is not performed, the selection signal 12 of “open” is output to the control unit 13 by selecting the inclination correction switch 11 to “OFF”. The camera unit 2 photographs a subject through a finder plate 14a that constitutes the tilt detection plate 14. Then, the image input unit 15 reads a photographed image by the control signal 32 from the control unit 13, converts it into image data 16, and outputs it to the memory unit 17. In addition, since a picked-up image is image | photographed through the finder plate 14a, it becomes an image taken in from the through hole 14b and the recognition hole 14c.

  The memory unit 17 stores the image data 16 according to the control signal 33 from the control unit 13. Further, the image data 18 is read out to the inclination detecting unit 19 and the image correcting unit 21 by the control signal 33 from the control unit 13. The tilt detection unit 19 detects an image taken from the image data 18 through the recognition hole 14c, detects that the tilt of the camera is + 30 ° from the position of the image, and tilts corresponding to the tilt of + 30 °. Data 20 is output to the image correction unit 21. The image correction unit 21 outputs the image data 22 to the control unit 13 without correcting the tilt data 20 corresponding to the tilt angle of the camera 2 by the control signal 34 from the control unit 13.

  Here, the inclination correction operation will be described with reference to the flowchart of FIG. As shown in FIG. 3, first, the camera unit 2 captures a subject (step S1). Next, the image correction unit 21 temporarily stores the image data 16 output from the image input unit 15 in the memory unit 17 based on the video captured by the camera unit 2, that is, captures the image data (step S2). Then, the image data 18 read from the memory unit 17 and the image detected by the inclination detection unit 19 through the recognition hole 14c are detected from the image data 18, and the inclination data 20 corresponding to the position of the image is obtained. Data capture is performed (step S3). Next, based on ON / OFF of the inclination correction switch 11, it is determined whether or not to perform an inclination correction process (step S4).

  Therefore, the image correction is ON / OFF controlled (image rotation control) by the control signal 34 corresponding to the selection signal 12 of the inclination correction switch 11 and the image data 22 is output. When the tilt correction is performed (step S4: YES), the tilt correction switch 11 is selected to be “ON”, and the tilt-corrected image data 22 is output (step S5). On the other hand, when the inclination correction is not performed (step S4: NO), the inclination correction switch 11 is selected to be “OFF” to output the image data 22 to the control unit 13 without the inclination correction (step S6). ). The display unit 28 displays the image data 29 output from the control unit 13.

  Accordingly, when the tilt correction switch 11 is selected to be “OFF”, the angle corresponding to the tilt angle of the camera 2 is not corrected when shooting with the tilt angle of the camera 2 being + 30 °, and FIG. ), An image with an inclination of −30 ° is displayed.

  Next, a case where tilt correction is performed while the tilt angle of the camera 2 remains + 30 ° during camera shooting will be described. In order to perform tilt correction, the selection signal 12 of “GND” is output to the control unit 13 by selecting the tilt correction switch 11 to be “ON”. The camera unit 2 captures a subject through a finder plate 14a constituting the tilt detection plate 14, and the image input unit 15 reads a captured image by a control signal 32 from the control unit 13, converts it into image data 16, and converts the image data 16 into a memory unit. 17 is output. The memory unit 17 accumulates the image data 16 by the control signal 33 from the control unit 13 and reads the image data 18 by the control signal 33 from the control unit 13. The tilt detection unit 19 detects an image photographed through the recognition hole 14c from the image data 18, detects the tilt of the camera 2 from + 30 ° from the position of the image, and tilt data 20 corresponding to the tilt of + 30 °. Is output to the control unit 13.

  The image correction unit 21 performs tilt correction corresponding to the tilt angle of the camera 2 by the control signal 34 from the control unit 13 (+ 30 ° rotation), and outputs the image data 22 to the control unit 13. Here, the image correction process will be described.

  As shown in FIG. 6, first, pixel data (image data 18) is stored in a first memory space (regular data) that is divided into regions such as a regular frame 101 in the memory unit 17. The memory unit 17 assigns the pixel data (image data 18) in two dimensions such as a vertical axis address and a horizontal axis address as shown in FIG. 6B. Here, the vertical axis address “005” and the horizontal axis address “003” are handled as memory data “005003”.

Next, the image correction unit 21 performs data sampling from the first memory space (regular data) according to the reading order as shown in FIG. Replace with data 22). Note that data sampling is performed by changing the starting point and the row and column steps determined in advance by the inclination angle. Here, since the inclination of the camera 2 is + 30 °, the data sampling of the normal frame 101 is performed in the order of the addresses 50503 → 005004 → 005005 → 004006 → 004007 → 004008. 5E, 3D, 3E , 1C,...) To replace the correction frame 102.

  The display unit 28 displays the image data 29 output from the control unit 13. Accordingly, when the tilt correction switch 11 is selected to be “ON”, tilt correction corresponding to the tilt angle of the camera 2 is performed (+ 30 ° rotation) when shooting with the tilt angle of the camera 2 being + 30 ° (FIG. 5). An image having no inclination as shown in (C) can be displayed.

As described above, in the first embodiment, PDC (Personal Digital
(Cellular) has been described, but it can also be applied to other transmission methods. For example, TDMA (Time Division
Multiple Access (PHS) PHS (Personal Handy-phone System) and W-CDMA (Wideband Code)
Division Multiple Access) (IMT-2000) and CDMA (IS-95) can be applied as they are.

  Next, a second embodiment of the present invention will be described with reference to FIG. 7 includes a camera unit 2, an antenna 3, a tilt correction switch (first switch) 11, a control unit 13, a tilt detection plate 14, an image input unit 15, a memory unit 17, a tilt detection unit 19, The image correction unit 21, the sound processing unit 23, the wireless processing unit 25, the display unit 28, the input operation unit 30, and a switch (second switch) 35 are configured.

  The inclination correction switch 11 outputs a selection signal 12 for selecting ON / OFF of inclination correction to the control unit 13. The inclination detection plate 14 is disposed on the front surface of the camera unit 2 for photographing a subject so as to be rotatable by gravity. The camera unit 2 photographs the subject through the tilt detection plate 14. The image input unit 15 reads a captured image in accordance with a control signal 32 from the control unit 13, converts it into image data 16, and outputs the image data 16 to the memory unit 17. The memory unit 17 accumulates the image data 16 by the control signal 33 from the control unit 13, and reads the image data 18 by the control signal 33 described above, and the control unit 13, the image correction unit 21, and the inclination detection unit 19 Output.

  The tilt detection unit 19 receives the image data 18 from the memory unit 17 and outputs tilt data 20 corresponding to the tilt angle of the camera 2 to the control unit 13. The image correction unit 21 always corrects the angle corresponding to the tilt angle of the camera 2 for the image data 18 described above, and outputs image data 22 without tilt to the control unit 13. The control unit 13 receives the selection signal 12, the image data 22, the key signal 31, and the selection signal 36 in order to execute control relating to image processing and communication with the wireless telephone communication network, and receives the control signal 32 and the control signal 33. And the audio signal 24 and the signal 27 are transmitted and received. The voice processing unit 23 encodes the call signal and decodes the received voice data (performs codec processing), and transmits and receives the voice signal 24.

  The wireless processing unit 25 transmits and receives signals 27 such as transmission / reception frequency setting, demodulation / modulation, reception electric field strength detection (RSSI), and TDMA processing, and wireless connection (air) to a cell base station (not shown). Interface) to a high frequency signal 26 for transmission through the antenna 3. The display unit 28 displays the image data 29. The input operation unit 30 has a power on / off (ON / OFF), a numeric keypad, a function selection key, and the like, and outputs a key signal 31 to the control unit 13. The switch 35 selects ON / OFF of the inclination correction for transfer and outputs a selection signal 36 to the control unit 13.

That is, the camera- equipped mobile phone 1B according to the second embodiment does not have the tilted image tilt data 18 output from the memory unit 17 and the image corrected tilt output from the image correction unit 21 to the control unit 13. The camera-equipped mobile phone according to the first embodiment shown in FIG. 1 is changed in that two types of image data of the image data 22 are input and an ON / OFF control switch 35 for correcting the inclination of the data transfer image is added. Different from 1A.

  The camera-equipped mobile phone 1B according to the second embodiment performs ON / OFF control of tilt correction of an image displayed on the display unit 28 by a switch (first switch) 11 and ON of tilt correction of a data transfer image. / OFF control can be performed by the switch (second switch) 35. That is, the user (user) can arbitrarily select ON / OFF control for tilt correction of each image for display and data transfer.

1 is a block diagram showing an overall configuration of a first embodiment of a camera-equipped mobile phone according to the present invention; FIG. It is explanatory drawing of the inclination detection plate used with the mobile phone with a camera shown in FIG. 1, (A) shows a mounting state, (B) shows the detailed structure of the inclination detection plate when there is no inclination, (C) Indicates the state of the tilt detection plate when there is a tilt. It is a flowchart explaining the inclination correction operation | movement of the mobile phone with a camera shown in FIG. It is explanatory drawing of the inclination state of a mobile phone with a camera. The relationship between the tilt state of the camera-equipped mobile phone of the present invention and the display image is shown, (A) is an image capture state, (B) is a display image before tilt correction, and (C) is a display image after tilt correction. It is explanatory drawing of the method of the image correction process in this invention, (A) shows the relationship between inclination image data and correction data, (B) shows the structure of a regular frame, (C) shows correction data. It is a block diagram which shows the whole structure of 2nd Example of the mobile phone with a camera by this invention. It is a block diagram which shows the structure of the conventional portable videophone.

Explanation of symbols

1A, 1B Camera-equipped mobile phone 2 Camera unit 11 Tilt correction switch (first switch)
13 Control Unit 14 Tilt Detection Plate 14a Viewfinder Plate 14b Center Opening 14c Recognition Hole 14d Weight (Weight)
DESCRIPTION OF SYMBOLS 15 Image input part 17 Memory part 19 Inclination detection part 21 Image correction part 23 Audio | voice processing part 25 Radio | wireless processing part 28 Display part 30 Input operation part 35 Switch (2nd switch)
37 Tilt detector

Claims (4)

In a camera-equipped mobile phone configured to shoot a subject with a built-in camera and store it in a memory and read out image data stored in the memory and transmit it to a communication partner.
A tilt detection plate including a center opening on the front surface of the camera and a finder plate formed with a recognition hole around the center opening and rotatable by gravity;
Image correction for capturing the subject with the camera through the tilt detection plate, detecting the tilt of the camera from the position of the image captured through the recognition hole, and correcting the image captured by the camera and stored in the memory And a camera-equipped mobile phone.   The camera-equipped mobile phone according to claim 1, wherein the finder plate of the tilt detection plate is attached to a base plate fixed to a main body of the mobile phone by a bearing structure. In an image tilt correction method for a camera-equipped mobile phone that captures a subject with a built-in camera and loads the image into a memory, reads out the image data captured in the memory, corrects the image tilt, and transmits the image tilt to a communication partner.
Providing a finder plate having a recognition hole for instructing a vertical direction on the front surface of the camera at the time of photographing a subject by the camera;
Detecting the tilt angle of the camera by photographing the subject through the viewfinder plate;
Correcting the tilt of image data read from the memory based on the detected tilt angle of the camera;
An image tilt correction method for a camera-equipped mobile phone, comprising: transmitting the tilt-corrected image data to a communication partner. 4. The image inclination correction of a camera-equipped mobile phone according to claim 3, further comprising a selection step of selecting image data with corrected image inclination or uncorrected image inclination data when transmitting the image data to a communication partner. Method.

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