JP2006129033A - Electronic device and photographing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To visually confirm a photographing image with accuracy, and to easily conform the photographing image of a camera with a wanted point. <P>SOLUTION: A display device 1 displays a video real time which is photographed with a movable camera unit 3. The movable camera unit 3, when magnifying and displaying an object to be photographed, mechanically moves the optical axis to project the direct underpart (direct rear part) of the display device 1 for automatic adjustment to keep a constant distance from the object. A calculation processor 5 processes a distorted image which is photographed with the movable camera unit 3 using a software, such as trapezoidal correction, so that the photographed image is corrected to a proper one. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electronic device and a photographing method related to a digital camera, a mobile phone, and the like.

In recent years, electronic devices typified by digital cameras and mobile phones have become widespread regardless of the age, and models equipped with various functions centering on cameras have begun to appear. For example, a technique for improving the visibility at the time of focusing in a macro shooting mode for the purpose of using a photograph or the like has been proposed (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 2004-200846

  However, the above-described conventional technique has a problem that when the character information photographed by the camera is confirmed on the display screen, the displayed imaging is distorted and displayed when the optical axis of the camera and the photographing target surface are not perpendicular. It was. Further, since the optical axis 10 of the camera 100 and the visual axis with respect to the screen of the display device 101 are shifted as shown in FIGS. 7A to 7C, FIG. As shown in FIG. 8, even if it is attempted to display a captured image on the display screen, as shown in FIG. 8B, there is a problem that it is difficult to match the image captured by the camera 100 to a desired location.

  The present invention has been made in view of such circumstances, and the purpose thereof is to accurately recognize the imaging without depending on the angle between the camera and the imaging target surface and the distance between the camera and the display screen. Another object of the present invention is to provide an electronic apparatus and a photographing method capable of easily adjusting the image picked up by a camera to a desired location.

  In order to solve the above-described problem, the present invention includes an imaging unit that captures an image and a display unit that displays an image captured by the imaging unit, and the imaging unit and the display unit are provided in a casing. The electronic devices arranged on the front and back sides are characterized by comprising optical axis changing means for changing the optical axis direction of the imaging means.

  The present invention is characterized in that, in the above-mentioned invention, the optical axis changing means directs the optical axis of the imaging means to the center of the back side of the display means in close-up photography.

  According to the present invention, in the above invention, the imaging unit is disposed so that an intersection of an optical axis of the imaging unit and a surface including the display screen of the display unit deviates from a center of the display screen. Features.

  In the present invention, the present invention is characterized in that the intersection does not exist in the display screen.

  The present invention is characterized in that, in the above invention, the image processing apparatus further comprises a correction unit that corrects distortion of an image captured by the imaging unit.

  The present invention is characterized in that, in the above invention, the imaging means sets a focal distance to an imaging target in the proximity imaging to a close distance of 10 cm or less. In particular, with a method of use such as a magnifying glass that is held and operated by hand, it is difficult to easily adjust the distance to the object to be imaged and to adjust it to the desired location. Can do. Here, the minimum focal length can be set to 5 mm or more, for example.

  In order to solve the above-described problem, the present invention provides an imaging method for an electronic device in which an imaging unit that captures an image and a display unit that displays the captured image are arranged on the front and back of the housing. The optical axis of the imaging means is directed to the center of the back side of the display means.

  The present invention is characterized in that, in the above invention, distortion of an image captured by the imaging unit is corrected.

  According to this invention, the optical axis changing means changes the optical axis direction of the imaging means for taking an image at the time of shooting. Therefore, it is possible to accurately view the image without depending on the angle between the camera and the surface to be imaged and the distance between the camera and the display screen, and it is possible to easily adjust the image captured by the camera to a desired location. The advantage is obtained.

Hereinafter, a camera-equipped mobile phone according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a camera-equipped mobile phone according to an embodiment of the present invention. FIG. 2 is a schematic diagram showing the positional relationship between the camera and the object to be imaged at the time of shooting with the camera-equipped mobile phone according to the present embodiment. FIG. 3 is an image captured with the camera-equipped mobile phone according to the present embodiment. It is a conceptual diagram which shows the image process with respect to an image.

  In the figure, a display device 1 is composed of a liquid crystal display device or the like, and displays in real time an image photographed by a movable camera unit described later. The input device 2 includes a shutter key for shooting, various function keys, and the like. The movable camera unit 3 includes an optical system such as a lens and an image pickup device such as a CCD. When the object to be photographed is displayed in an enlarged manner, the optical axis is mechanically displayed so as to project directly under the display device 1. And is automatically adjusted so as to maintain a certain distance to the object (for example, 3 cm from the back surface of the display device 1 as shown in FIGS. 2A and 2B). When the distance to the object is not fixed, it may be automatically adjusted separately by an infrared or optical measuring device (not shown).

  The data recording device 4 is used for storing various types of data associated with shooting, and for temporarily capturing captured images. The arithmetic processing unit 5 performs image processing on the captured image captured by the movable camera unit 3. In particular, in this embodiment, the direction of the optical axis of the movable camera unit 3 is changed from 10-1 to 10-2 in any of the photographing forms shown in FIGS. Since it is mechanically operated and imaged so as to project just below (behind) 1, the captured image is distorted as shown in FIG. Therefore, the arithmetic processing unit 5 uses the software for trapezoid correction or the like (for example, when the outline of a character to be imaged is measured to determine a trapezoid to correct the imaging to a rectangle or the like) to the captured image. On the other hand, by executing the image processing, the captured image is corrected so as to be appropriate as shown in FIG.

  The RF device 6 is connected to a content provider server 8 on the network via a communication network 7 by wireless communication, and transmits / receives various data to / from the server 8. The communication network 7 is a communication line network such as the Internet. The content provider server 8 is a server on the network, and particularly provides dictionary content in the present embodiment. The dictionary content provides the meaning of the character image for a given character image.

  Next, the operation of the above-described embodiment will be described. Here, FIG. 4 to FIG. 6 are flowcharts for explaining the operation of the camera-equipped mobile phone according to the present embodiment. When the user activates the magnifying glass function, first, switching input to the magnifying glass mode is performed (S10). Next, the movable camera unit 3 is operated, and the camera is expanded to the initial value of the camera so as to photograph the image directly below the display device 1 (S11). Next, by the user's operation, the zoom magnification and the like are set according to the position of the object (S12), and the zoom input (S13) and zoom processing are executed in order to set the alignment and zoom magnification of the object. (S14).

  Next, it is determined whether or not to use the OCR function for converting the captured character image into a text character (character code) (S15). If the user instructs not to use the OCR function, FIG. The distortion of the distorted captured image is corrected so as to become the image shown in FIG. 6B from the image shown in a), and image processing for enlarging is performed (S16), and the image is displayed on the display device 1 (S17).

  On the other hand, when the user instructs to use the OCR function, the user repeats until the character can be read correctly while adjusting the text reading position so that the character to be read is captured while looking at the display screen (S18 to S20). When the characters are read correctly, it is determined whether or not to use the built-in dictionary function to convert the read character image into text characters (S21). When using the built-in dictionary, the corresponding phrase is built-in. Processing for querying the dictionary is executed (S22), and it is determined whether there is a match (S23). If there is a character that matches the read character image, the corresponding meaning data is returned (S24), predetermined data processing is performed (S25), and the corresponding meaning is displayed on the display device 1 (S26).

  On the other hand, if there is no match in the built-in dictionary, a non-applicable determination is returned (S27), predetermined data processing is performed (S28), and a determination result of “not applicable” is displayed on the display device 1 ( S29).

  When the built-in dictionary is not used, the RF device 6 starts data communication with the content provider server 8 via the communication network 7 (S30), and executes processing for querying the server 8 for the corresponding phrase (S31). ). The server 8 determines whether or not there is a match (S32). If there is a character that matches the read character image, the corresponding meaning data is returned to the camera-equipped mobile phone (S33). When the camera-equipped mobile phone receives the semantic data from the server 8, it performs predetermined data processing (S34) and displays the corresponding meaning on the display device 1 (S35).

  On the other hand, if the server 8 does not find a match, it returns a non-applicable determination to the camera-equipped mobile phone (S36). In the camera-equipped mobile phone, predetermined data processing is performed on the determination result “not applicable” (S37), and the determination result “not applicable” is displayed on the display device 1 (S38).

  In the above-described embodiment, when the imaging target is data such as characters and symbols, it is easy to check the imaging target, and it is possible to accurately read even when the so-called OCR function for reading character information is activated. In addition, it can be applied even when there is a distance between the camera and the display screen so that the camera and the display screen are not back to back, and the degree of freedom in the arrangement of the camera and the display screen can be increased. As a result, it is possible to improve convenience.

  In the above-described embodiment, the arithmetic processing unit 5 is executed in a computer system. A series of processing steps by the arithmetic processing unit 5 described above is stored in a computer-readable recording medium in the form of a program, and the above-described processing is performed by the computer reading and executing the program. That is, the arithmetic processing unit 5 is realized when a central processing unit such as a CPU reads the above program into a main storage device such as a ROM or RAM and executes information processing / arithmetic processing.

Here, the computer-readable recording medium means a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like. Alternatively, the computer program may be distributed to the computer via a communication line, and the computer that has received the distribution may execute the program.
In this embodiment, the information terminal has been described. However, the present invention is not limited to this, and the present invention may be applied to a mobile phone, a mobile terminal, a PDA, and the like.

It is a block diagram which shows the mobile telephone with a camera by embodiment of this invention. It is a schematic diagram which shows the positional relationship of the camera and the imaging target object at the time of imaging | photography with the mobile phone with a camera by this embodiment. It is a conceptual diagram which shows the image process with respect to the captured image with the mobile phone with a camera by this embodiment. It is a flowchart for demonstrating operation | movement of the mobile phone with a camera by this embodiment. It is a flowchart for demonstrating operation | movement of the mobile phone with a camera by this embodiment. It is a flowchart for demonstrating operation | movement of the mobile phone with a camera by this embodiment. It is a schematic diagram for demonstrating the usage type of the mobile phone with a camera by a prior art. It is a schematic diagram for demonstrating the picked-up image with the mobile phone with a camera by a prior art.

Explanation of symbols

1. Display device (display means)
2 Input device 3 Movable camera unit (imaging means, optical axis changing means)
4 Data recording device 5 Arithmetic processing device (correction means)
6 RF device 7 Communication network 8 Content provider server

Claims (9)

In an electronic apparatus comprising: an imaging unit that captures an image; and a display unit that displays an image captured by the imaging unit, wherein the imaging unit and the display unit are arranged on the front and back of a housing.
An electronic apparatus comprising optical axis changing means for changing an optical axis direction of the imaging means.   The electronic apparatus according to claim 1, wherein the optical axis changing unit directs the optical axis of the imaging unit to a central portion on the back side of the display unit in close-up photography.   3. The imaging device according to claim 1, wherein an intersection of an optical axis of the imaging device and a surface including a display screen of the display device is arranged so as to deviate from a center of the display screen. Electronic equipment.   The electronic device according to claim 1, wherein the intersection does not exist in the display screen.   The electronic apparatus according to claim 1, further comprising a correction unit that corrects distortion of an image captured by the imaging unit.   The electronic apparatus according to claim 1, wherein the imaging unit sets a focal length to an imaging target in the proximity imaging to 10 cm or less.   The electronic apparatus according to claim 1, further comprising conversion means for converting the image pickup into text characters. In an imaging method for an electronic device in which an imaging unit that captures an image and a display unit that displays the captured image are arranged on the front and back of the housing.
In close-up photography, an imaging method characterized by directing the optical axis of the imaging means to the central part on the back side of the display means. The imaging method according to claim 8, wherein distortion of an image captured by the imaging unit is corrected.

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