JP2001160958A - Photographed image data correction method for mobile video phone and system thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain display of photographed images with high quality by reducing a blurring of the photographed image for a video phone and to suppress a transmission data quantity by increasing the compression rate of the photographed image data. SOLUTION: An image input section 15 stores image data photographed by a camera section 2 to an image memory section 16. When a camera-shake correction processing on switch 11 is closed, a control section 14 receives information of detecting mechanical or electrical tilt from a tilt information detection section 12 and zoom-setting information from a zoom-setting section 13. The control section conducts blurring correction processing on the basis of the tilt information, when the zoom-setting information is unchanged in comparison with the just preceding information. When the zoom-setting information is changed, since it is possible that the photographing object area is changed largely by a change in the focal distance, no blurring correction processing is conducted. The blurring correction processing is conducted, by replacing the present image data with the previously photographed image data received when a tilt is detected, or with the photographed image data received, after the tilt is detected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for correcting photographed image data in a portable television (hereinafter abbreviated as "television") telephone device and a device therefor. A method of correcting captured image data in a portable videophone device that reduces blurring of a captured image having a tilt due to positional displacement of the device due to vibration of the device (appropriately described only with camera shake) and transmits captured image data at a high compression ratio Regarding the device.

[0002]

2. Description of the Related Art Conventionally, a portable videophone for transmitting and receiving photographed image data together with a call voice has been used. This type of portable videophone is capable of transmitting high-bandwidth image data together with audio data (for example, RCR-ST).
Time-division multiple access (TDMA / TDD) using the same frequency capable of D-27F standard / transmission rate of 32 kbps × 2
Digital cordless telephone system (for example, PH
S: Personal HandyphoneSystem / DECT: Digital Eu
An example using ropean Cordless Telecommunication (hereinafter, only PHS) is known.

[0003] Also, PDC (Personal Digital Cellular Telecommunication) of PHS or TDMA (CDMA) system is used.
It is known to switch to PDC transmission due to deterioration of the transmission state of the wireless telephone communication network, for example, PHS transmission state (for example, Japanese Patent Laid-Open No.
-126856, "Portable videophone device").

[0004] Due to its portability, such portable videophones can be used to take pictures of the surrounding scenery while carrying them, or to communicate with the outside scenery or people in the car while traveling by vehicle, or to communicate with them while communicating. In many cases, video calls are made while moving. That is, blurring of the captured image (displacement of the displayed image on the screen) due to camera shake at the time of shooting or vibration when mounted in a vehicle or the like occurs. Therefore, when the photographed image is confirmed by the own device, the displayed image at the other party of the videophone that transmitted the photographed image is extremely difficult to see.

[0005] In addition, when the blurring of the photographed image occurs, the data amount in color moving image transmission increases as a result, and the image processing amount in television image transmission increases. In other words, it becomes difficult to transmit an image at a high compression rate. MPEG4 (Motion Picture) is used as a format for transmitting color moving pictures of such a portable videophone.
Expert Group) method is often adopted. This MP
In the EG4 method, Huffman coding and discrete cosine transform are used for the coding, and motion compensation inter-frame prediction (prediction coding) is employed. In such a color moving image transmission, a complex photographed image having a large amount of change in photographed image data accompanied by a blurred photographed image has a relatively low compression ratio that does not cause deterioration in the quality, and a compression ratio that does not cause the photographed image to be blurred. It drops significantly.

[0006]

As described above, in the above-mentioned conventional example, when the photographed image is confirmed by its own device due to a camera shake at the time of photographing or a shake of the photographed image due to vibration when mounted in a vehicle or the like, There is a disadvantage that the display screen becomes extremely difficult to see at the other party of the videophone that transmitted the captured image.

[0007] Further, when such blurring of the photographed image occurs, the amount of image processing in television image transmission increases, and it becomes difficult to transmit an image at a high compression rate. In other words, there is a disadvantage that high-quality videophone transmission cannot be performed.

The present invention has been made to solve the above-mentioned problems in the prior art, and it is possible to reduce a blur of a photographed image and to provide a high-quality display screen, and to increase a compression ratio of photographed image data. It is an object of the present invention to provide a method for correcting captured image data in a portable videophone device capable of suppressing the amount of transmission data and a device therefor.

[0009]

To achieve the above object, a method for correcting photographed image data in a portable videophone device according to the present invention is to correct photographed image data with respect to the inclination of the portable videophone device. Storing the captured image data, detecting the tilt of the portable videophone device, and correcting the stored captured image data to have no tilt corresponding to the tilt detection information. ing.

In the above-mentioned photographing, when the perspective photographing is set, it is determined that the photographing target area has changed, and the correction of the accumulated photographed image data to a state without inclination is stopped.

A portable videophone apparatus according to the present invention corrects photographed image data with respect to the inclination of the apparatus. The photographing means sends out photographed image data of a photographed object, and the photographed image from the photographing means is transmitted. Accumulating means for accumulating data; inclination detecting means for detecting the inclination of the portable videophone device; and a state where the photographed image data accumulated by the accumulating means has no inclination corresponding to the inclination detection information from the inclination detecting means. And a correction means for correcting the error.

[0012] The image processing apparatus may further include a compression means for compressing and outputting the photographed image data corrected by the correction means.

[0013] The photographing means is provided with a perspective photographing setting section, and when the perspective photographing setting is performed, it is determined that the photographing target area has changed, and the correction to the state without inclination is stopped. .

The apparatus is provided with a setting operation means for turning on / off the correction of the correction means to a state without inclination.

Further, the photographing means is arranged so as to be detachable from the main unit.

The portable videophone device includes a wireless communication unit for performing voice / image communication with a wireless telephone communication network, and a voice processing unit for performing at least voice communication by encoding and decoding processes. There is a configuration. Also,
The portable videophone device has a voice communication with a wired telephone communication network.
The configuration further includes a wired connection processing unit for performing image communication and a voice processing unit for performing at least voice communication by encoding and decoding processes.

The inclination detecting means may detect the inclination of the apparatus by
It is configured to detect by a mechanical change including turning on a contact due to movement of mercury, or to detect an inclination of the device by an electrical change including a change in outline of photographed image data before and after photographing.

The correction means corrects the photographed image data to a state where there is no inclination by detecting the previously captured photographed image data or inclination without accumulating the photographed image data at the time of detecting the inclination. The configuration uses captured image data captured later.

According to the present invention, there is provided a separate type portable videophone apparatus having a portable telephone main body and a photographing / image display device for correcting photographed image data with respect to the inclination of the photographing / image display device. A photographing means for transmitting photographed image data of a photographed object, a tilt detecting means for detecting the inclination of the photographing / image display device, a screen display means for displaying the received photographed image data on a screen, and a mobile phone main body. Wireless communication means for receiving the photographed image data from the camera and transferring the photographed image data output by the photographing means to the mobile phone main body; and transmitting the received image data to the photographing / image display device to the mobile phone main body. A main body side wireless communication means for transmitting and receiving photographed image data output by the photographing means from the photographing / image display device; A storage unit for storing the captured image data, and a correction unit for correcting the captured image data stored in the storage unit to a state without tilt in accordance with the tilt detection information from the tilt detection unit. It is.

Such a method for correcting photographed image data in the portable videophone device of the present invention and the device accumulate the photographed image data and detect the inclination of the portable videophone device. Correction is made so that there is no tilt due to the positional displacement of the captured image data accumulated corresponding to the tilt detection information. Also, the captured image data is, for example, M
The data is transmitted after being compressed by the PEG4 system.

As a result, the blurring of the photographed image is reduced, and a high-quality screen can be displayed. That is, a case where the photographed image is confirmed by the own device or a display image of the videophone destination that transmitted the photographed image is displayed with high quality.

Further, according to the present invention, photographed image data is transmitted with a high compression ratio. Therefore, an increase in the amount of transmission data can be suppressed. That is, since blurring of a captured image is unlikely to occur, image transmission at a high compression ratio can be performed without increasing the amount of captured image data as a result. For example, in the MPEG4 system, in a complex photographed image having a large amount of change in photographed image data accompanied by blurring of the photographed image, the compression ratio at which the quality does not relatively deteriorate is smaller than that of a photographed image in a state where the photographed image is not blurred It will not drop significantly.

Further, according to the present invention, when the perspective photographing (zoom) setting is performed, it is determined that the photographing target area has changed, and the correction to the state without inclination is stopped. As a result, in a portable videophone device provided with a perspective photographing setting mechanism (zoom mechanism), it is possible to effectively correct photographed image data. In other words, multifunctional portable videophone devices are promoted.

In addition, the correction to the state without inclination is turned on.
The apparatus is provided with a setting operation means for turning off, and it is possible to turn on / off the correction processing of the captured image data. That is, the degree of freedom in selecting a shooting state is improved. Therefore, when the blur of the photographed image is necessary for displaying the photographed image (for example, when a running state is to be transmitted), the blur of the photographed image can be transmitted as it is (OFF state).

In the present invention, the photographing means (camera unit) is detachably mounted on the main unit. As a result, for example, it is possible to capture the face of the caller while making a voice call with the device positioned beside the face. In other words, the degree of freedom of photographing is improved.

Further, according to the present invention, a videophone by wireless communication or wired communication is possible. Further, the inclination of the device is detected by a mechanical change or an electrical change. Thereby, the degree of freedom of design (configuration) is improved.

Further, according to the present invention, in a separate type portable videophone device in which a portable telephone main body and a photographing / image display device are separated, photographed image data with respect to a tilt of the photographing / image display device is corrected. In this case, it is possible to display a large-sized screen on the received image data, and also to easily shoot the caller in a face-to-face manner.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a method for correcting photographed image data in a portable videophone apparatus and an apparatus according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a block diagram showing an embodiment of a method for correcting photographed image data in a portable videophone device of the present invention and the device. FIG. 2 is a front view showing a front external configuration of the portable videophone device, and FIG. 3 is a flowchart showing a processing procedure of an operation of the embodiment.

This portable videophone device is shown in FIGS.
As shown in FIG. 1, a mobile phone body 1 and a CC which is detachably connected to the mobile phone body 1 by wired connection.
And a camera section 2 as a photographing means including an optical system such as a D element and an objective lens.

The mobile phone main unit 1 is provided with a camera shake correction processing ON (ON) switch 11 as a setting operation means for setting the enable / disable of the camera shake correction function (setting / cancellation of the camera shake correction mode in the control unit 14). In addition, an inclination information detection unit 12 is provided as inclination detection means for detecting inclination information when camera shake or vibration is applied during photographing of the apparatus.

Further, the camera unit 2 is provided in the mobile phone main unit 1.
A control unit 14 as a correction unit is provided together with a zoom setting unit 13 that detects setting information relating to the focal length of perspective photography (zoom photography). This control unit 14
Image processing according to an embodiment of the present invention (operation for reducing camera shake during shooting or blurring of a shot image due to vibration when mounted in a vehicle, and transmitting shot image data at a high compression rate) and a wireless telephone Control regarding communication with the communication network is executed between the respective units.

The mobile phone main unit 1 captures a target photographed image under the control of the control unit 14 and performs necessary image processing (for example,
Image input unit 1 as photographing means for performing amplification and contour correction)
5 and an image memory unit 16 as storage means for storing captured image data from the image input unit 15. In addition, an image correction unit 17 is provided as a correction unit that corrects camera shake during shooting or camera shake of a shot image due to vibration when the camera is mounted in a vehicle or the like.

Further, the portable telephone main unit 1 converts the color photographed image data photographed by the camera unit 2 into the MPEG4 image data.
Along with the image processing unit 18 as compression means for performing processing such as compression / decompression according to standards, etc., as well as an audio processing unit 19 as audio processing means for decoding received voice data and performing codec processing for encoding a transmission signal. have.

The mobile phone main unit 1 sets a transmission / reception frequency, demodulation / modulation, reception electric field strength detection (RSSI), and T
A wireless processing unit 2 as a wireless communication unit for performing a DMA / TDD process or the like and performing a wireless line connection (air interface) with a cell base station (not shown) through an antenna.
A display unit 21 using a liquid crystal display (LCD) or the like for displaying captured image data, received captured image data, character data for communication, and the like together with 0. Further, an input operation unit 22 having power on / off (ON / OFF), numeric keys, function selection keys, and the like is provided.

The voice processing unit 19 is connected to a microphone 19a for voice communication and a speaker 19b as voice processing means. In addition, this type of mobile phone main body 1 includes:
Light-emitting diode, ringer and display unit 2 for calling display
Although a lighting unit for one is provided, the illustration thereof is omitted.

Next, the operation of the embodiment of the present invention will be described. In addition, when confirming the photographed image on the own device or as a cause of the blurred display image of the videophone partner transmitting the photographed image, there are camera shake during mobile photographing and vibration when mounted in a vehicle, etc. In the description, only the camera shake will be described.

Referring to FIG. 1, control unit 14 executes control related to communication with a wireless telephone communication network among the units.
Communication via this wireless telephone communication network is performed by the PHS
In the case of, RCR-STD-27F standard (transmission speed 32k
bps × 2). That is, the wireless processing unit 20 sets the transmission / reception frequency, demodulates / modulates, and detects the received field strength (RSS
In addition to performing I) and TDMA / TDD processing, a wireless line connection (air interface) with a cell base station (not shown) is performed through an antenna.

Transmission data from the microphone 19a and reception data to the speaker 19b are processed between the radio processing unit 20 and the voice processing unit 19. That is, the voice processing unit 19 performs a codec process of decoding the received voice data and encoding the transmission signal. Further, the display unit 21 displays photographed image data, received photographed image data, and data related to communication, such as a symbol mark indicating a received electric field strength, an on / off hook state, an input telephone number, and the like. The display unit 21 displays character data and the like under the control of the control unit 14 on a screen.

The control unit 14 is, for example, an RCR-STD-
Time division multiplexing connection (TDMA / T
Control of transmission / reception connection with a cell base station (not shown) according to the DD system (DD system). For example, Mobile Assisted (Mo
bile Assisted) It performs handover processing and roaming with another cell base station (not shown). In addition, the control unit 14 performs control such as execution of a location registration sequence and transmission / reception / reception of an adjacent station base station wave using a control channel (CCH) or an information channel (TCH), thereby performing a videophone call.

Next, image processing according to the embodiment of the present invention, that is, an operation of reducing camera shake and transmitting captured image data at a high compression rate will be described.

1 to 3, under the control of the control unit 14, the image input unit 15 outputs photographed image data photographed by the camera unit 2, and stores the photographed image data in the image memory unit 16 (step). S31). Control unit 14
Determines whether or not to perform the camera shake correction process by capturing the ON signal of the camera shake correction process ON switch 11 (step S32).

When the control unit 14 receives an OFF signal for not performing the camera shake correction processing from the camera shake correction processing ON switch 11 (step S32: No), the camera shake correction processing by the tilt information detection unit 12 and the image correction unit 17 is performed. If not, the process returns to the determination as to whether the camera shake correction process is possible (step S37).

If the camera shake correction processing setting is ON in step S32 (step S32: Yes), the control unit 14
The tilt detection information from the tilt information detection unit 12 is fetched. When the camera shake correction processing setting is off, for example, the control unit 1 sequentially stores the captured image data stored in the image memory unit 16.
4 reads out and sends it to the display unit 21, where the captured image is displayed.

When the camera shake correction processing setting is off, the photographed image data stored in the image memory section 16 under the control of the control section 14 is compressed by the image processing section 18 and displayed on the display section 21 on the screen. You may do it. Further, when the camera shake correction processing setting is off, the photographed image data stored in the image memory unit 16 under the control of the control unit 14 is transferred to the wireless processing unit 20 via the wireless processing unit 20 without performing the camera shake correction. It may be transmitted to a videophone destination through a network. This is a case where the user wants to transmit a state of running while holding the portable videophone in his hand.

If the camera shake correction processing setting is ON in step S32 (the camera shake correction processing ON switch 11 is ON),
The control unit 14 captures the detection information from the tilt information detection unit 12 (Step S33). The control unit 14 further takes in the zoom setting information from the zoom setting unit 13 (Step S
34). Next, the control unit 14 compares whether or not the zoom setting information fetched from the zoom setting unit 13 has been changed from the information obtained immediately before (step S35).

If the zoom setting information has not been changed in step S35 (No), the image correcting section 17 executes camera shake correction on the photographed image data stored in the image memory section 16 based on the tilt information ( Step S3
6). If there is a change in the zoom setting information in step S34 (Yes), there is a possibility that the target area being photographed has changed significantly due to a change in the focal length, so the flow shifts to step S37 to perform a camera shake correction process. The process returns to the determination as to whether or not the camera shake correction process can be performed.

Next, a description will be given of a camera shake detection (tilt detection) by the tilt information detecting unit 12 and a camera shake correction to the photographed image data by the image correcting unit 17. Various types of such camera shake detection and camera shake correction for captured image data are well known. For example, the tilt information detection unit 12
As the tilt detection (back and forth and left and right of the photographing direction), there are well-known methods of mechanically detecting the tilt and a method of electrically detecting the tilt.

For mechanical tilt detection, for example, a tilt detector provided with two contacts at both ends in a sealed insulating tube and filled with mercury is well known. Two of these tilt detectors are arranged horizontally and on a cross, and the front and rear and right and left tilts (camera shake) of the photographing direction are detected from the conduction state of the four contacts located at 90-degree intervals.

The image correcting section 17 corrects the photographed image data based on the information detected by the tilt information detecting section 12 as described above. For example, when the inclination is detected, the control unit 14 captures the previously captured image data in a state without camera shake without storing the captured image data at this point in the image memory unit 16 and stores the captured image data in the image processing unit 18. Send it out,
The correction processing is performed. Further, when the inclination is detected, the captured image data at this point is not stored in the image memory unit 16 but the captured image in a state where the inclination is not detected after the inclination is detected is taken in and replaced. Is performed.

In the detection of the electrical inclination by the inclination information detection unit 12, the inclination information detection unit 12 takes in the photographic image data from the image input unit 15 through the control unit 14, and outputs the contours in the photographic image data before and after the X direction. Are differentiated and taken in, for example, and the inclination (camera shake) in the left-right direction of the shooting direction is detected from the amount of change. Also,
For example, the outline in the captured image data before and after the Y direction is
Differentiation is taken in, and the inclination (camera shake) in the front-back direction of the photographing direction is detected from the amount of change.

The image correcting section 17 corrects the photographed image data based on the detection information of the camera shake detected by the tilt information detecting section 12 as described above. In this case, mechanical or electrical tilt detection is performed, and the degree of freedom of the configuration (design) is improved.

In this embodiment, FIG. 2 shows a state in which the camera unit 2 is mounted on the mobile phone main unit 1, but the camera unit 2 is detachably arranged on the mobile phone main unit 1 by a wired connection. In addition, it is also possible to detach the camera unit 2 from the mobile phone main unit 1 and take an image thereof. It can also be used as a so-called separate type portable videophone device. The operation in this case is the same as that described above, and the degree of freedom of use is improved. For example, it is possible to take an image of the face of the caller while making a voice call with the device positioned beside the face.

Next, another embodiment of the separation type videophone device will be described. FIG. 4 is a front view showing a front external configuration of a portable videophone device according to another embodiment. Also,
FIG. 5 is a block diagram illustrating a configuration of a portable videophone device according to another embodiment. FIG. 6 is a block diagram illustrating an example of a configuration of a shooting and captured image display device according to another embodiment.

The separated type portable videophone device of this example is schematically constituted by a mobile phone main body 1A and a photographing / image display device 30. In the external configuration of the mobile phone main unit 1A, the camera unit 2 and the camera shake correction processing ON switch 11 shown in FIG. 1 are not provided. Except for this, the configuration is the same as that of FIG.

In FIG. 4, the photographing / image display device 30
For example, it has a size that can be placed on the palm of a human hand, and has a two-fold structure that can be freely opened and closed. On one side of the two-fold structure, a liquid crystal display (LCD) 31 having a screen display unit larger in size than the mobile phone main body is arranged, and further, a rotatable camera unit 32 is provided. An input operation unit 3 configured with a flat panel on the other side of the two-fold structure for performing various operations.
3 and a speaker 34 are provided. The speaker 3
Reference numeral 4 denotes an audio output for a videophone.
It may not be provided.

In FIG. 5, the mobile phone body 1A has
Neither the image input unit 15 (FIG. 1) and the tilt detection unit 12 nor the zoom setting unit 13 and the camera shake correction processing on switch 11 are provided, and a weak radio wave (for example, Bluetooth / IEEE802 standard) or infrared ( For example, Ir
DA1.1), a wireless communication unit 2 for performing two-way communication (transmitted and received captured image data) with the capture / image display device 30
5 are provided.

In FIG. 6, the photographing / image display device 3
Reference numeral 0 denotes a basic and example configuration, which includes a camera unit 32 (FIG. 4) having the same configuration as that of FIG. 1 and an input operation unit 33 for performing various operations related to shooting and screen display. Further, a wireless communication unit 40 for performing two-way communication with the mobile phone main unit 1A using weak radio waves or infrared rays is provided together with a speaker 34 for outputting audio in a videophone, and photographed image data from the wireless communication unit 40 is provided. Is provided with an output video signal processing unit 41 for performing a process (for example, a brightness process, an X / Y drive process) for displaying a display image.

Further, the photographing / image display device 30 fetches a photographed image from the camera unit 32 together with an audio signal processing unit 42 for processing the audio image data from the wireless communication unit 40 and performs necessary image processing. An input video signal processing unit 43 as a photographing unit, an inclination detection unit 44, a zoom setting unit 45, and a camera shake correction processing ON (ON) switch 46 similar to those in FIG. 1 are provided.

Next, the operation as a basic videophone of the separable portable videophone device shown in FIGS. 4 to 6 and the operation of the camera shake correction process according to the present invention are the same as those in the above-described embodiment. It is. In the operation of the other embodiment, two-way communication is performed between the mobile phone main body 1A and the photographing / image display device 30 using weak radio waves or infrared rays. The transmitted / received data by this two-way communication is color photographed image data which is photographed by the photographing / image display device 30 and subjected to the image processing, and is further transferred to the photographing / image display device 30 by the cellular phone main body 1A. Is the captured image data of the videophone received in step (a).

Operations other than the wireless communication unit 25 in the mobile phone main unit 1A in FIG. 5 and the wireless communication unit 40 in the photographing / image display device 30 in FIG. 6 are the same as those in the above-described embodiment.
The description of the operation is omitted.

Here, the tilt information detecting section 44, the zoom setting section 45, and the camera shake correction processing ON switch 46 are provided in the photographing / image display apparatus 30, but as in FIG. May be provided. In this case, control signals relating to the tilt detection unit 44, the zoom setting unit 45, and the camera shake correction processing on switch 46 are transmitted to the mobile phone main unit 1A and the photographing / image display device 30 by bidirectional communication using weak radio waves or infrared rays. The sequence may be transmitted, and the sequence may be performed in the same manner as the case where the sequence is provided in the photographing / image display device 30.

Further, between the mobile phone main unit 1A of FIG. 5 and the photographing / image display device 30 of FIG. Alternatively, the connection may be made by interface processing.

The separation type portable videophone device shown in FIGS. 4 to 6 enables a videophone with the mobile phone main unit 1A and the photographing / image display device 30 being separated. That is, by holding the mobile phone main unit 1A in the hand and using it in the same state as a mobile phone dedicated to voice, and arranging the photographing / image display device 30 so as to face the caller, It is possible to take a picture during a conversation, and a liquid crystal display (LCD) 31 displays a screen larger in size than the mobile phone main body 1A. In other words, the usability is improved.

In this embodiment, the image processing unit 18
Has described an example of performing compression / decompression according to the MPEG4 standard, but other methods are also applicable. For example, JPEG (Joint Photographic) that compresses / expands color still images
The method can be applied to the case where the photographed image data is continuously (frame-forwarded) transmitted by the Expert Group method. Further, when wideband transmission is possible, the image processing for image stabilization according to the embodiment of the present invention can be applied to a transmission mode to which, for example, the NTSC system that performs interlaced scanning can be applied. Therefore, the configuration (design) can be freely performed.

Further, in this embodiment, the portable videophone device as the PHS, that is, the wireless videophone device has been described, but the present invention is not limited to this. For example, the present invention can be applied to a small desktop videophone connected to a wired line similar to a portable videophone device. That is, when carrying the small desk-top videophone, for example, by making a videophone call by connecting to a public telephone (such as an ISDN line) with a cable / connector, that is, using the small desk-top videophone held by human hands This can be applied to the case where camera shake is corrected. In this case, the degree of freedom of the configuration (design) is improved.

Further, in this embodiment, the description has been made with the PHS, but the present invention can be applied to other transmission systems as they are. For example, TD, which currently has a lower transmission speed than PHS
PDC of MA system and W-CDMA system (IMT-200
0) and CDMA (IS-95). Also in this case, the degree of freedom of the configuration (design) is improved.

[0067]

As is apparent from the above description, according to the method for correcting photographed image data in the portable videophone device of the present invention, the photographed image data is accumulated and the inclination of the device is detected. At this time, the photographed image data stored corresponding to the tilt detection information is corrected so that the device is not tilted. Further, the photographed image data is transmitted after being compressed.

As a result, blurring of the photographed image is reduced, and a high-quality screen display can be performed. In other words, there is an effect that the captured image is confirmed by the own device, and a display image of the videophone partner transmitting the captured image is displayed with high quality.

According to the present invention, photographed image data is transmitted with a high compression ratio. Therefore, an increase in the amount of transmission data can be suppressed. That is, since blurring of a captured image is unlikely to occur, there is an effect that image transmission with a high compression ratio becomes possible without increasing the amount of captured image data as a result.

Further, according to the present invention, when the setting of the perspective photographing is performed, it is determined that the photographing target area has changed, and the correction to the state without the inclination is stopped. As a result, in a portable videophone device provided with a perspective photographing setting mechanism, effective correction of photographed image data becomes possible, and as a result, the multifunctionality of the portable videophone device is promoted.

Further, according to the present invention, there is provided a setting operation means for turning on / off the correction to a state where there is no tilt,
It is possible to turn on / off the correction processing of the captured image data.
As a result, there is an effect that the degree of freedom in selecting a shooting state is improved.

Further, according to the present invention, the photographing means is detachably disposed on the main unit. As a result, for example, while making a voice call with the device positioned next to the face,
The face of the caller can be photographed. In other words, there is an effect that the degree of freedom of photographing is improved.

Further, according to the present invention, a videophone by wireless communication or wired communication is possible. Further, the inclination of the device is detected by a mechanical change or an electrical change. Thereby, there is an effect that the degree of freedom of design (configuration) is improved.

Further, according to the present invention, in a separate type portable videophone device in which the portable telephone main body and the photographing / image display device are separated, the photographed image data with respect to the inclination of the photographing / image display device is corrected. As a result, it is possible to display a large-sized screen on the received image data, and it is also possible to easily perform the face-to-face shooting of the caller.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of an embodiment of a captured image data correction method and a device in a portable videophone device of the present invention.

FIG. 2 is a front view showing a front appearance configuration of the portable videophone device in the embodiment.

FIG. 3 is a flowchart showing a processing procedure of an operation of the embodiment in the embodiment.

FIG. 4 is a front view showing a front external configuration of a portable videophone device according to another embodiment.

FIG. 5 is a block diagram illustrating a configuration of a portable videophone device according to another embodiment.

FIG. 6 is a block diagram illustrating a configuration of a shooting and shooting / image display device according to another embodiment.

[Explanation of symbols]

 Reference Signs List 1 mobile phone main unit 2 camera unit 11 camera shake correction processing on switch 12 tilt information detection unit 13 zoom setting unit 14 control unit 15 image input unit 16 image memory unit 17 image correction unit 18 image processing unit 19 audio processing unit 19a microphone 19b speaker Reference Signs List 20 wireless processing unit 21, 31 display unit 22, 33 input operation unit 30 shooting / image display device 32 camera unit

Claims (13)

[Claims] 1. A method for correcting photographed image data with respect to the inclination of a portable videophone device, comprising: storing photographed photographed image data; detecting the inclination of the portable videophone device; Correcting the stored captured image data so that the captured image data does not have a tilt. A method for correcting captured image data in a portable videophone device, comprising: 2. A method according to claim 1, wherein when the perspective setting is performed in the photographing, it is determined that the photographing target area has changed, and the correction of the accumulated photographed image data to a state without inclination is stopped. 2. The method for correcting captured image data in a portable videophone device according to claim 1, wherein: 3. A portable videophone device for correcting photographed image data with respect to an inclination of the device, a photographing means for transmitting photographed image data of a photographed object, and a storing means for storing photographed image data from the photographing means. A tilt detection unit that detects a tilt of the portable videophone device, and a correction unit that corrects the captured image data stored in the storage unit to a state without tilt in accordance with the tilt detection information from the tilt detection unit. A portable videophone device comprising: 4. The portable videophone device according to claim 3, further comprising a compression unit for compressing and outputting the photographed image data corrected by said correction unit. 5. A perspective photographing setting unit is provided in the photographing means, and when the perspective photographing setting is performed, it is determined that the photographing target area has changed, and the correction to the state without inclination is stopped. The portable videophone device according to claim 3, wherein: 6. The portable videophone device according to claim 3, further comprising a setting operation unit for turning on / off the correction of the correction unit to a state without inclination. 7. The portable videophone apparatus according to claim 3, wherein said photographing means is detachably mounted on said main apparatus. 8. The portable videophone device according to claim 3, further comprising: wireless communication means for performing voice / image communication with a wireless telephone communication network; and for performing voice communication by at least encoding and decoding processing. A portable videophone device comprising: a voice processing unit; 9. The portable videophone device according to claim 3, wherein: a wired connection processing unit for performing voice / image communication with a wired telephone communication network; and a voice communication by at least encoding and decoding processes. A portable videophone device, further comprising: audio processing means. 10. The portable videophone device according to claim 3, wherein the tilt detecting means detects the tilt of the device by a mechanical change including turning on a contact due to movement of mercury. 11. The portable videophone according to claim 3, wherein the inclination detecting means detects an inclination of the apparatus by an electrical change including a change in outline of photographed image data before and after photographing. apparatus. 12. The correction means for correcting the captured image data to a state in which the captured image is not tilted, wherein the captured image data at the time when the tilt is detected is not stored in the storage means, and the captured image data or the tilt previously captured is used. 4. The portable videophone device according to claim 3, wherein photographed image data taken after detection is used. 13. A separation type portable videophone device having a mobile phone main body and a photographing / image display device, and correcting photographed image data with respect to the inclination of the photographing / image display device. A photographing means for transmitting photographed image data of a photographing target; a tilt detecting means for detecting a tilt of the photographing / image display device; a screen display means for displaying received photographed image data on a screen; Wireless communication means for receiving photographed image data from the camera and transferring photographed image data output by the photographing means to the mobile phone main body, wherein the mobile phone main body includes the photographing / image display. A main body side wireless communication unit for transmitting the received image data to the device, and receiving the photographed image data output by the photographing unit from the photographing / image display device; A storage unit for storing captured image data in one of the mobile phone main unit and the photographing / image display device; and photographed image data stored in the storage unit corresponding to inclination detection information from the inclination detection unit. And a correcting means for correcting the tilt angle to a state without tilt.