KR101393147B1 - Mobile Terminal and Shooting method thereof - Google Patents

Abstract

The present invention provides a mobile terminal capable of capturing an image of a subject and a method of photographing the same.

Shooting method, mobile terminal

Description

Technical Field [0001] The present invention relates to a mobile terminal and a shooting method thereof,

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.

2 is a flowchart of a photographing method according to another embodiment of the present invention.

3A to 3C are views corresponding to the photographing step and the image processing step of FIG.

4 is a flowchart of a photographing method according to another embodiment of the present invention.

5A to 5C are views corresponding to the imaging step and the image processing step of FIG.

6 is a flowchart of a photographing method according to another embodiment of the present invention.

7A to 7C are screens corresponding to the photographing method of Fig.

Description of the Related Art

10: mobile terminal 12: input device

14: control unit 16: memory

20: camera 22: audio processor

24: Transceiver

The present invention provides a mobile terminal capable of capturing an image of a subject and a method of capturing the same.

Some of recent mobile terminals include a camera, so that it is possible to take an image of a subject.

Description of the Related Art [0005] Generally, a user of a mobile terminal with a built-in camera is a portable communication means. The mobile terminal always carries a self-photographing mode to take a portrait photograph in life or a self- There were many cases.

It is an object of the present invention to provide a mobile terminal capable of capturing an image by adjusting a video state and a method of photographing the same.

According to the present invention, there is provided an image processing apparatus including an input device, a camera that captures an image of a subject in accordance with an input signal of an input device, and a control unit that controls the shooting state of the camera, And a controller for controlling the image to be re-photographed.

According to still another aspect of the present invention, there is provided a method of controlling a camera, comprising the steps of: capturing an image of a subject in accordance with an input signal of an input device; adjusting an image capturing state of the camera according to the size of the image captured by the camera; And a re-photographing step of re-photographing the image in which the camera is adjusted in the photographing state.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.

A mobile terminal 10 according to an embodiment of the present invention includes an input device 12, a control unit 14, a memory 16, a display unit 18, a camera 20, an audio processing unit 22, (24).

The input unit or input device 12 is an interface for communicating with a peripheral device or a user. The input device 12 includes a keypad having a plurality of key buttons, a navigation key having various direction keys, a jog device for selecting an input according to the amount of rotation, a voice input device having a built-in voice recognition device, A touch input device, a wireless remote controller, or the like. Various information or commands such as a photographing instruction, recollection of the photographed image, information related to the photographing mode change, and a command are input from the peripheral device or the user to the mobile terminal 10 through the input device 12.

The control unit 14 controls the overall operation of the mobile terminal 10. For example, the control unit 14 performs processing and control for voice communication and data communication. Further, the control unit 14 performs photographing, processing of image data, and display of image data associated with the camera 20 to be described later. The description of the processing and control of the control unit 14 will be omitted, and the description of the processing and control of the control unit 14 related to the photographing method according to still another embodiment of the present invention will be described with reference to Figs. Will be described in detail.

The memory 16 may store a program for processing and controlling the mobile terminal 10, in particular, the control unit 14, reference data, various updatable storage data, and the like. The memory 16 includes internal or external storage media or storage devices for temporarily storing, such as various buffers, as well as permanently storing in the absence of a deletion request.

The memory 16 controls all the programs, input / output data, and various kinds of data to be processed, which are necessary for performing the above-described imaging command, the recapturing of the photographed image, the change of the photographing mode, And provides a storage space for storing or storing data structures.

On the other hand, under the control of the control unit 14, the memory 16 can store various image data photographed by the camera 22. [ The image data stored in the memory 16 can be displayed on the display 20 under the control of the control unit 14 or included in the multimedia message via the transceiver 12 or attached to the e-mail and transmitted to other terminals .

The display unit or display device 18 displays various processing and control operations of the mobile terminal 10 and various images under the control of the control unit 14. [ The display unit 18 provides the above-described imaging command, recapture of the photographed image, various information related to the change of the imaging mode, input of a command, and the like through the screen. The user can know the progress of various processes and control operations of the mobile terminal 10 by inputting various information or commands displayed through the display unit 18. [

The display unit 18 can display a still image or a moving image using the image data. The display unit 40 may be implemented by a general display device, for example, a liquid crystal display (LCD), an organic light emitting display (OLED), or a plasma display (PDP).

The camera 20 includes a sensor for photographing a subject and a signal processing unit for converting an analog electric signal from the sensor into a digital signal.

The sensor used in the camera 20 may be a CMOS (Complementary Metal Oxide Semiconductor) sensor or a CCD (Charge Coupled Device) sensor. The signal processing unit may be implemented by a DSP (Digital Signal Processor) or may be implemented by the control unit 16 described above. In the latter case, the signal processing unit is implemented independently of the camera unit 20, but the signal processing unit will be described as being included in the camera unit 20 in this specification.

The camera 20 simultaneously outputs video signals and synchronization signals obtained by photographing a subject. The synchronizing signal includes a horizontal synchronizing signal HSYNC and a vertical synchronizing signal VSYNC. The horizontal synchronization signal HSYNC is generated on a line-by-line basis of a displayed screen, and the vertical synchronization signal VSYNC is generated upon completion of a video signal of one frame. That is, the vertical synchronization signal is generated after the camera 20 outputs the video signal of one frame.

The camera 20 may be provided outside the case of the mobile terminal 10 or may be provided inside the case of the mobile terminal 10. Meanwhile, the camera 20 may include two cameras.

The audio processing unit 22 processes the voice to input and output the voice through the microphone (MIC) and the speaker (SPK). The audio processing unit 22 outputs various kinds of processing and control operations of the mobile terminal 10 through the speaker SPK or processes the voice to input various information and commands through the microphone MIC. For example, various information or commands related to various shooting commands of the mobile terminal 10, recapture of the photographed image, change of the shooting mode, and the like are inputted through the microphone (MIC) To the control unit 14 by using the built-in voice input device.

The transceiver 24 is a radio communication device for transmitting or receiving voice or data to / from a mobile communication network. The transmitting device 24 is not an essential component for the implementation of the present invention, but is a necessary component in the case of simultaneously implementing a communication function for voice communication in addition to the broadcast receiving function for implementing the present invention.

As described above, the mobile terminal 10 including the transceiver 24 can perform current or future various communications such as voice call, message transmission, web page connection, data transmission / reception, dial-up, and instant messenger.

2 is a flowchart of a photographing method according to another embodiment of the present invention. 3A to 3C are views corresponding to the photographing step and the image processing step of FIG.

2 and 3A to 3C, a method 100 of photographing a mobile terminal according to another embodiment of the present invention includes a photographing step S110, an adjusting step S120, a resampling step S130, .

The image capturing step S110 is a step of capturing a moving image or a still image of a subject by the camera 20. [ Of course, the camera 20 captures an image of the subject in accordance with the input signal of the input device 12. [ When there are two cameras 20, the two cameras 20 can shoot images of the subject separately or simultaneously. On the other hand, in the image capturing step S110, the audio inputted through the microphone (MIC) together with the image capturing can also be stored as the image data.

3A is a view showing an image of a subject photographed by the camera 20 in a control step on a display device 18 as a preview screen. As in the preview screen of FIG. 3A, , Especially the size of the face may be excessively large. Especially, since the arms length of people may be different, the size of the image displayed on the preview screen of FIG. 31 may be different for each user.

The adjusting step S120 is a step of adjusting the zoom state of the camera according to the size of the image photographed by the camera.

The adjustment step S120 first recognizes the outline of the image photographed in the image photographing step S110 in step S122 and analyzes the pattern on the basis of the recognized outline in step S124, Zooming in or zooming out according to the size of the person (S126).

FIG. 3B shows a result of recognizing an outline of the image photographed at S122. In step S124, the image processing unit or control unit 14 of the mobile terminal 10 compares the image pattern of the person stored in the memory 16 based on the recognized outline with the outline line of the image recognized in step S122, Check the image of the person.

 Thereafter, when a person is included in the images photographed in the photographing step S110, the camera is zoomed out at a specific ratio according to the size of the person's image. This specific ratio can be determined arbitrarily. For example, the specific ratio may be 50 to 70%, preferably 60%, of the total image size. A zoom-out ratio of 60% is preferred because it is typically a rate that humans are emotionally known as the optimal ratio, but the disclosure is not limited thereto. When the self-camera is photographed using the camera of the mobile terminal, the specific ratio may be a ratio known to be the emotionally optimal ratio of the human being, reflecting the length of the user's arm.

The resampling step S130 is a step in which the camera 20 retakes the image whose zoom state is adjusted at a specific ratio.

FIG. 3C is an image obtained by zooming out at a specific ratio according to the size of the person's image in the resampling step (S130). The re-photographed image may be stored in the memory 16 as image data or displayed on the display 18 as a preview screen. When audio data is included in the video data, audio can be output through the speaker SPK together with the re-captured video.

4 is a flowchart of a photographing method according to another embodiment of the present invention. 5A to 5C are views corresponding to the imaging step and the image processing step of FIG.

Referring to FIGS. 4 and 5A to 5C, a photographing method 200 of a mobile terminal according to another embodiment of the present invention includes an image photographing step S210, an adjusting step S220, a resampling step S230 ). Here, the image capturing step S210 and the retaking step S230 are substantially the same as or similar to the capturing method 100 of the mobile terminal according to another embodiment described with reference to FIG. 2 and FIGS. 3A to 3C, Replace with what is described above.

The adjusting step S220 first recognizes the outline of the image photographed in the image photographing step S210 (S222), analyzes the pattern based on the recognized outline (S224) For example, a person, and zooming in or out (S226) according to the size of the outline of the selected specific object, that is, for example, according to the size of a person.

FIG. 5B shows a result of recognizing the outline of the image photographed at S222. The image processing unit or the control unit 14 of the mobile terminal 10 compares the image pattern of the person stored in the memory 16 based on the recognized outline with the outline of the image recognized in S222, Check the image of the person.

 Thereafter, when a plurality of persons are included in the images photographed in the photographing step S210, the camera is zoomed out at a specific ratio according to the size of the person's image. This specific ratio can be determined arbitrarily. For example, it is preferable that this specific ratio is larger than when self-photographed alone, but the present invention is not limited thereto.

FIG. 5C shows an image taken at a specific ratio in a resampling step (S230) by zooming out according to the size of two or more images.

6 is a flowchart of a photographing method according to another embodiment of the present invention. 7A to 7C are screens corresponding to the photographing method of Fig.

Referring to FIG. 6, a photographing method 300 according to another embodiment of the present invention includes a photographing step S310, an adjusting step S320, and a resampling step S330.

The image photographing step S310 is a step of photographing a moving image or a still image of a subject by the camera 20. [

The adjustment step S320 is a step of adjusting the zoom state of the camera according to the size of the image photographed by the camera.

The adjusting step S320 first recognizes the face based on the pupil of the image photographed in the image photographing step S310 in step S322 and calculates the distance between the lens and the subject based on the recognized face in step S324, Calculates the number of subjects (S326), and zooms in or out (S328) according to the size of the subject. In this case, in step S322, after recognizing the face based on the pupil of the subject, the number of subjects may be calculated, and the distance between the lens and the subject may be calculated. Of course, steps S324 and S326 may be performed simultaneously, and zooming in / out may be performed in step S328 depending on the result.

FIG. 7A is a conceptual view illustrating a process of recognizing a face based on a pupil of an image photographed in step S322. In step S322, a rhombic shape according to a general or statistical ratio of a specific object, for example, a face of a person, is calculated on the basis of two pupils, and finally, according to the rhombic shape, .

The face of a person is statistically known to be 1.5 to 2.5 times larger than the distance of the pupil and larger in head length, but the present invention is not limited thereto. That is, the length of the jaw and the head relative to the distance of the pupil may be supplemented statistically or arbitrarily set by the user. For example, when shooting a self-camera, the distance between the pupil of the subject and the length of the nose and head are specified, so the specified ratio may be entered manually.

FIG. 7B is a view illustrating an overlap between the image photographed in step S310 and the image photographed in step S330 as a result of performing steps S324 and S326. As a result, it can be seen that the re-photographed image in step S330 is zoomed in when compared with the photographed image in step S310, and the focus is shifted to the left based on the face.

FIG. 7C is a view showing images of three specific objects overlapping the images photographed in step S310 and the images re-photographed in step S330 after performing steps S324 and S326.

Although the embodiments of the present invention have been described with reference to the drawings, the present invention is not limited thereto.

In the above embodiment, the zoom state is controlled by adjusting the photographing state of the camera, but the present invention is not limited thereto. The present invention can also adjust the angle or the position of the camera or the image in the photographing state of the camera. That is, after capturing an image, the position and angle of at least one specific object obtained by analyzing the pattern of the outline can be adjusted.

In the above embodiment, although a person is exemplarily described as a specific object, it may be an animal or a specific object as well as a person. For example, when a dog is being held while taking a picture of a self-camera, the photographing state can be adjusted at an appropriate magnification for photographing his or her face and puppy by analyzing the outline of the face and the dog.

In the above embodiment, the analysis of the outline line for recognizing a specific object has been exemplarily described. However, a method of recognizing a pattern of a specific object may be various other than the method of analyzing the outline line. For example, a moving object may be recognized as a specific object by confirming a minute motion of a person in a preview state.

The present invention has an effect that a camera can photograph an image by adjusting a video state.

Claims (14)

display; camera; And Recognizing an outline of the image from an image photographed through the camera, recognizing at least one object based on a pattern of the recognized outline, Determining a number of objects, adjusting a zoom magnification at a predetermined magnification based on the size of the at least one object and the number of objects, re-photographing the image according to the adjusted magnification, And displaying the displayed image on the display. The apparatus of claim 1, And displays the re-photographed image in an overlapping manner with the photographed image. delete delete The method according to claim 1, Wherein the controller recognizes the at least one object through face recognition of the image. The method according to claim 1, Wherein, And adjusts an angle or a position of the camera. Displaying an image photographed through a camera on a display; Recognizing an outline of the image from an image photographed through the camera; Recognizing at least one object based on the pattern of the recognized outline; Determining a number of the at least one object; Adjusting a zoom magnification at a predetermined magnification based on the size of the recognized at least one object and the number of the objects; And Capturing the image again according to the adjusted magnification, and displaying the re-captured image on the display The method comprising the steps of: 8. The method of claim 7, Wherein the step of displaying the resampled image on the display comprises: And displaying the re-photographed image in an overlapping manner with the photographed image. delete delete 8. The method of claim 7, Wherein recognizing the at least one object comprises: And recognizing the at least one object through face recognition of the image. 8. The method of claim 7, Further comprising the step of adjusting an angle or a position of the camera. display; camera; And A display unit for displaying an image photographed by the camera on the display, recognizing a face based on a pupil of the subject from an image photographed through the camera, and determining a distance between the camera and the subject based on the recognized face And adjusting a zoom magnification according to a predetermined magnification on the basis of the size of the subject and the number of subjects, re-photographing the image according to the magnification, And displaying the photographed image on the display. 14. The method of claim 13, Wherein, And displays the re-photographed image in an overlapping manner with the photographed image.

Images