JP4459517B2 - Portable terminal device, calibration method and program for portable terminal device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a portable terminal device such as a mobile phone with a camera and a PDA equipped with display means such as a liquid crystal monitor for displaying an image, a portable terminal device calibration method, and a program for causing a computer to execute the calibration method It is about.
[0002]
[Prior art]
Although there is a remarkable spread of mobile phones, in recent years, mobile phones with cameras having photographing means for acquiring image data by photographing are becoming popular (for example, Japanese Patent Laid-Open Nos. 6-233020 and 9-322114). 10-150523, JP-A 2000-253290, etc.). By using such a camera-equipped mobile phone, the user's favorite image data acquired by photographing can be set on the standby screen of the mobile phone. In addition, since it is possible to attach the image data acquired by shooting to an e-mail and send it to a friend, when it becomes necessary to cancel the appointment or when it is likely to be late at the meeting time, It is convenient for communication with friends because it is possible to inform a friend of his / her current situation, such as taking a picture of his / her disappointing expression and sending it to a friend.
[0003]
In addition, the function of the camera-equipped mobile phone has been improved, and it has become possible to acquire image data having a size sufficient for print output in the camera-equipped mobile phone.
[0004]
On the other hand, image data acquired by a camera-equipped mobile phone is subjected to various image processes to obtain processed image data, print out the image data, or upload it onto a network. . As a result, the user can acquire a high-quality image, acquire a print, view an image on a network, and the like, so that the use form of image data by communication can be diversified.
[0005]
The use of the image data acquired in such a camera-equipped mobile phone is performed by transmitting the image data from the camera-equipped mobile phone that captured the image data to an image server that manages the storage of the image data. The image is processed, and an e-mail with a URL indicating the storage location of the image data is generated, and the e-mail is sent to a terminal device such as a mobile phone, a personal computer or a PDA, and a print output of the image data. The image data is transmitted to a lab or the like, and image data is downloaded with reference to a URL from a mobile phone, a terminal device, or a lab that has received an e-mail.
[0006]
[Problems to be solved by the invention]
The above-described image processing is performed on the image data on the assumption that the processed image data is displayed on a reference monitor and observed under certain observation conditions. For this reason, if the processed image data is displayed on the reference monitor and the image displayed under a certain observation condition is observed, an image having the optimum image quality can be visually recognized.
[0007]
However, the display characteristics of the liquid crystal monitor of the camera-equipped mobile phone vary depending on the model and the manufacturer. For example, depending on the type of backlight of the liquid crystal monitor, when white is displayed, it may appear reddish or bluish. In addition, the gradation may appear to be hard or soft. Furthermore, there are many places where the camera-equipped mobile phone is used, depending on the user, and there are many indoors. Therefore, the image viewing conditions vary depending on the user.
[0008]
For this reason, if an image that has been subjected to image processing is displayed on the monitor as it is, the image quality of the displayed image may not be visible in an optimal state even though image processing has been performed. is there. For this reason, it is conceivable to change the conditions for image processing for each model of the camera-equipped mobile phone. As described above, the image viewing conditions and user preferences in the camera-equipped cellular phone vary widely depending on the user. Therefore, it is very difficult to perform image processing in consideration of image observation conditions and user preferences according to individual users.
[0009]
The present invention has been made in view of the above circumstances, and an object of the present invention is to display an image having an image quality according to a user's image viewing condition or a user's preference on a mobile terminal device such as a camera-equipped mobile phone.
[0010]
[Means for Solving the Problems]
A portable terminal device according to the present invention includes a photographing unit that acquires image data by photographing, a communication unit that transmits and receives data, an image processing unit that performs image processing on the image data to obtain processed image data, In a portable terminal device comprising display means for performing various displays,
A standard image serving as a reference for image display is displayed on the display means, adjustment information representing an image quality adjustment result for the standard image is generated, and the display is performed based on a calibration condition calculated based on the adjustment information. It further comprises calibration means for calibrating the means.
[0011]
The adjustment information is obtained from a corrected standard image obtained by performing correction on the standard image serving as a reference for calibration, or a plurality of corrected standard images obtained by performing various image processing on the standard image. A corrected standard image selected by the user can be used.
[0012]
The “image processing” here includes not only processing performed on the image data itself but also changing brightness and color parameters of the display means.
[0013]
In the portable terminal device according to the present invention, storage means for storing standard image data representing the standard image;
Calibration condition calculation means for calculating the calibration condition based on the adjustment information may be further provided.
[0014]
In the mobile terminal device according to the present invention, the communication means receives the standard image data representing the standard image transmitted from the external device, transmits the adjustment information to the external device, and is calculated in the external device. The calibration condition may be received as a means.
[0015]
A calibration method for a portable terminal device according to the present invention includes an imaging unit that acquires image data by imaging, a communication unit that transmits and receives data, and an image that performs image processing on the image data to obtain processed image data In a calibration method for a portable terminal device comprising a processing means and a display means for performing various displays,
Displaying a standard image as a reference for image display on the display means;
Generating adjustment information representing the adjustment result of the image quality for the standard image;
The display unit is calibrated based on a calibration condition calculated based on the adjustment information.
[0016]
In the calibration method of the portable terminal device according to the present invention, the portable terminal device stores a storage unit that stores standard image data representing the standard image, and a calibration that calculates the calibration condition based on the adjustment information. In the case of further comprising a calculation condition calculation means,
Displaying the standard image data based on the standard image data stored in the storage means;
The calibration condition may be calculated based on the adjustment condition.
[0017]
In the calibration method of the mobile terminal device according to the present invention, the standard image data representing the standard image transmitted from the external device is received,
Sending the adjustment conditions to the external device;
The calibration condition calculated in the external device may be received.
[0018]
In addition, you may provide as a program for making a computer perform the calibration method of the portable terminal device by this invention.
[0019]
【The invention's effect】
According to the present invention, a standard image serving as a reference for image display is displayed on the display unit, and adjustment information representing an image quality adjustment result for the standard image is generated. Then, the display unit is calibrated based on the calibration condition calculated based on the adjustment information. Here, the adjustment information reflects the viewing conditions of the user of the mobile terminal device and the user's preferences. For this reason, it is possible to calibrate the display means reflecting the user's image viewing condition and user's preference of the mobile terminal device, so that the image quality according to the user's image viewing condition and user's preference can be improved. An image can be displayed on the display means.
[0020]
Further, by providing storage means for storing standard image data representing a standard image in the portable terminal device and calibration condition calculating means for calculating a calibration condition based on the adjustment information, the display means can be efficiently displayed in the portable terminal device. Can be calibrated.
[0021]
Also, the standard image data transmitted from the external device is received, the adjustment information is transmitted to the external device, and the calibration condition calculated in the external device is received, whereby the standard image data is stored in the portable terminal device. For this reason, it is not necessary to provide a storage unit having a relatively large capacity and a unit for calculating the calibration condition, so that the configuration of the portable terminal device can be simplified.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic block diagram showing a configuration of an image processing system including a mobile terminal device according to the first embodiment of the present invention. As shown in FIG. 1, the image processing system according to the present embodiment is configured to transfer data between a camera-equipped mobile phone 1 and an image server 2 that performs image processing on image data S0 acquired by the camera-equipped mobile phone 1. It is an exchange.
[0023]
The camera-equipped mobile phone 1 includes a camera 11 that acquires image data S0 by photographing, a communication unit 12 that transmits and receives image data S0 and the like by communication via a mobile phone communication network, image data S0, and standard image data to be described later. A memory 13 for storing various information such as N0, a liquid crystal monitor 14 for performing various displays such as images and telephone numbers, and a calibration condition calculating means 15 for calculating a calibration condition C0 for calibrating the liquid crystal monitor 14 And a calibration means 16 for calibrating the liquid crystal monitor 14 based on the calibration condition C0, and a controller 17 for controlling the camera-equipped mobile phone 1.
[0024]
It should be noted that the photographing operation by the camera 11, the instruction to transmit / receive the image data S0, the instruction to calculate the calibration condition, etc. are performed by the input means 18 comprising a plurality of buttons provided on the camera-equipped mobile phone 1.
[0025]
As a result, the user of the camera-equipped mobile phone 1 captures the image using the camera 11 to acquire the image data S0, displays the acquired image data S0 on the liquid crystal monitor 14 and sets it as a standby screen. Data S0 can be transmitted to the image server 2 for image processing, or the acquired image data S0 can be transmitted to the friend's camera-equipped mobile phone 1 via the image server 2.
[0026]
The calibration condition calculation means 15 displays the standard image represented by the standard image data N0 stored in the memory 13 on the liquid crystal monitor 14, and displays the displayed standard image as the image quality desired by the user of the camera-equipped mobile phone 1. The calibration condition C0 of the liquid crystal monitor 14 is calculated based on the corrected standard image data N1 representing the corrected standard image obtained by making the user correct. Specifically, by detecting how much the correction standard image data N1 has been corrected based on the difference between the correction standard image data N1 and the standard image data N0, the same as the correction standard image. The calibration condition C0 is calculated so that an image having image quality is observed on the liquid crystal monitor 14 after calibration.
[0027]
Here, the calibration condition C0 is a condition for changing the backlight color of the liquid crystal monitor 14, the brightness of the liquid crystal monitor 14, the gradation of the liquid crystal monitor 14, and the like. For example, when the corrected standard image is more reddish than the standard image, the calibration condition calculation unit 15 sets the calibration condition C0 for adjusting the backlight color so as to increase the redness of the liquid crystal monitor 14. calculate. Further, when the corrected standard image is brighter than the standard image, or when the gradation is hardened, the calibration condition calculation means 15 backs up the liquid crystal monitor 14 so as to brighten or tones the gradation. A calibration condition C0 for adjusting the light and the liquid crystal monitor 14 is calculated.
[0028]
The calibration unit 16 calibrates the liquid crystal monitor 14 based on the calibration condition C0 calculated by the calibration condition calculation unit 15.
[0029]
The image server 2 includes a communication unit 21 that transmits and receives various kinds of information such as the image data S0 via a mobile phone communication network, and an image processing unit that performs image processing on the image data S0 to obtain processed image data S1. 22, a memory 23 that stores various information such as image data S 0, and a controller 24 that controls the image server 2.
[0030]
The image processing unit 22 performs density correction processing, white balance adjustment processing, gradation conversion processing, color correction processing, sharpness processing, and the like on the image data S0 to obtain processed image data S1.
[0031]
Next, the operation of the first embodiment will be described. FIG. 2 is a flowchart showing the calibration process performed in the first embodiment. First, it is monitored whether or not a calibration instruction has been issued (step S1). If step S1 is affirmed, the standard image data N0 is read from the memory 13 and displayed on the liquid crystal monitor 14 (step S2). ). As a result, the standard image is corrected by the user of the camera-equipped mobile phone 1. Then, monitoring is started as to whether or not an instruction indicating that the correction has been completed is made (step S3). When step S3 is affirmed, corrected standard image data N1 representing a corrected standard image is generated (step S4).
[0032]
Next, the calibration condition calculation means 15 calculates a calibration condition C0 based on the corrected standard image data N1 (step S5). Then, the calibration unit 16 calibrates the liquid crystal monitor 14 based on the calibration condition C0 (step S6), and ends the calibration process.
[0033]
FIG. 3 is a flowchart showing transmission / reception processing of the image data S0 in the first embodiment. First, in the camera-equipped mobile phone 1, shooting is performed using the camera 11, and image data S0 is acquired (step S11). The acquired image data S0 is transmitted to the image server 2 by the communication means 12 (step S12).
[0034]
The transmitted image data S0 is received by the communication means 21 of the image server 2 (step S13). Then, image processing is performed on the image data S0 to obtain processed image data S1 (step S14). The processed image data S1 is transmitted to the camera-equipped mobile phone 1 by the communication means 21 (step S15).
[0035]
The transmitted processed image data S1 is received by the communication means 12 of the camera-equipped mobile phone 1 (step S16), stored in the memory 13 (step S17), and further displayed on the liquid crystal monitor 14 (step S18). finish.
[0036]
As described above, in the first embodiment, the standard image data N0 serving as a reference for image display is displayed on the liquid crystal monitor 14, and the user's image is obtained by correcting the standard image data N0. Since the calibration condition C0 is calculated based on the corrected standard image data N1 reflecting the condition and the user's preference, and the liquid crystal monitor 14 is calibrated based on the calculated calibration condition C0, the camera is attached. The liquid crystal monitor 14 can be calibrated to reflect the viewing conditions of the user of the mobile phone 1 and the user's preferences, and thereby an image having an image quality according to the viewing conditions of the user's images and the user's preferences can be obtained. It can be displayed on the liquid crystal monitor 14.
[0037]
Further, since the standard image data N0 representing the standard image is stored in the memory 13 of the camera-equipped mobile phone 1 and the calibration condition calculating means 15 for calculating the calibration condition C0 is provided, the camera-equipped mobile phone 1 is efficient. The liquid crystal monitor 14 can be calibrated well.
[0038]
Next, a second embodiment of the present invention will be described. FIG. 4 is a schematic block diagram showing a configuration of an image processing system including a portable terminal device according to the second embodiment of the present invention. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. In the second embodiment, the standard image data N0 is stored in the memory 23 of the image server 2, the calibration condition calculation means 25 is provided in the image server 2, and the calibration condition calculation means 15 in the camera-equipped mobile phone 1 is provided. This is different from the first embodiment in that it is omitted and the standard image data N0 is not stored in the memory 13.
[0039]
Next, the operation of the second embodiment will be described. FIG. 5 is a flowchart showing a calibration process performed in the second embodiment. First, in the camera-equipped mobile phone 1, it is monitored whether or not a calibration instruction has been issued (step S 21). (Step S22).
[0040]
In the image server 2, it is monitored whether or not a calibration instruction has been received by the communication means 21 (step S23). If step S23 is affirmed, the standard image data N0 is read from the memory 23 and communication is performed. The data is transmitted to the camera-equipped mobile phone 1 by means 21 (step S24).
[0041]
In the camera-equipped mobile phone 1, the standard image data N0 is received by the communication means 12 (step S25) and displayed on the liquid crystal monitor 14 (step S26). As a result, the standard image is corrected by the user of the camera-equipped mobile phone 1. Then, monitoring is started whether or not an instruction indicating that the correction has been completed is made (step S27). If step S27 is affirmed, corrected standard image data N1 representing a corrected standard image is generated (step S28). The corrected standard image data N1 is transmitted to the image server 2 by the communication means 12 (step S29).
[0042]
In the image server 2, the corrected standard image data N1 is received by the communication unit 21 (step S30), and the calibration condition calculation unit 25 calculates the calibration condition C0 based on the corrected standard image data N1 (step S31). ). The calibration condition C0 is transmitted to the camera-equipped mobile phone 1 by the communication means 21 (step S32).
[0043]
In the camera-equipped mobile phone 1, the communication unit 12 receives the calibration condition C0 (step S33), and the calibration unit 16 calibrates the liquid crystal monitor 14 based on the calibration condition C0 (step S34). The process ends.
[0044]
As described above, in the second embodiment, the standard image data N0 is stored in the image server 2, the standard cell data N0 is received by the camera-equipped mobile phone 1, and the standard image data N0 is received by the camera-equipped cellular phone 1. To obtain corrected standard image data N1, which is transmitted to the image server 2, and the image server 2 calculates the calibration condition C0 based on the corrected standard image data N1. For this reason, in the camera-equipped mobile phone 1, it is not necessary to provide a memory having a relatively large capacity for storing the standard image data N0 and the calibration calculation means 15. It can be.
[0045]
In the first and second embodiments, the standard image data N0 is displayed on the liquid crystal monitor 14 of the camera-equipped mobile phone 1, and the corrected standard image data N1 is obtained by causing the user to correct the standard image data N0. The calibration condition C0 is calculated based on this, but a plurality of corrected standard image data obtained by performing different image processing on the standard image data N0 is displayed on the liquid crystal monitor 14, and a plurality of corrections displayed on the liquid crystal monitor 14 are displayed. The user may select a desired correction standard image from the standard image, and the calibration condition C0 may be calculated based on the difference between the correction standard image data representing the selected correction standard image and the standard image data N0. .
[0046]
In the first and second embodiments, the camera-equipped mobile phone 1 is calibrated. However, if the portable terminal device has a monitor such as a PDA, the calibration method according to the present invention is applied. It is something that can be done.
[Brief description of the drawings]
FIG. 1 is a schematic block diagram showing a configuration of an image processing system including a mobile terminal device according to a first embodiment of the present invention. FIG. 2 is a flowchart showing calibration processing performed in the first embodiment. FIG. 4 is a schematic block diagram showing a configuration of an image processing system including a portable terminal device according to a second embodiment of the present invention. FIG. 5 is a flowchart showing image data transmission / reception processing performed in the first embodiment. The flowchart which shows the calibration process performed in 2nd Embodiment.
DESCRIPTION OF SYMBOLS 1 Mobile phone with camera 2 Image server 11 Camera 12, 21 Communication means 13, 23 Memory 14 Liquid crystal monitor 15, 25 Calibration condition calculation means 16 Calibration means 17, 24 Controller 18 Input means 22 Image processing means

Claims (9)

Image capturing means for acquiring image data by image capturing, communication means for transmitting / receiving data, image processing means for performing image processing on the image data to obtain processed image data, and display means for performing various displays In a mobile terminal device comprising:
A standard image serving as a reference for image display is displayed on the display means, image quality adjustment for the standard image is accepted, adjustment information representing an image quality adjustment result for the standard image is generated, and calculated based on the adjustment information A portable terminal device further comprising calibration means for calibrating the display means based on the calibration conditions. Storage means for storing standard image data representing the standard image;
The portable terminal device according to claim 1, further comprising calibration condition calculation means for calculating the calibration condition based on the adjustment information.   The communication means is means for receiving standard image data representing the standard image transmitted from an external device, transmitting the adjustment information to the external device, and receiving the calibration condition calculated in the external device. The mobile terminal device according to claim 1. Image capturing means for acquiring image data by image capturing, communication means for transmitting / receiving data, image processing means for performing image processing on the image data to obtain processed image data, and display means for performing various displays In a calibration method of a mobile terminal device comprising:
Displaying a standard image as a reference for image display on the display means;
Accepts image quality adjustment for the standard image,
Generating adjustment information representing the adjustment result of the image quality for the standard image;
A calibration method characterized in that the display unit is calibrated based on a calibration condition calculated based on the adjustment information. The portable terminal device further comprises storage means for storing standard image data representing the standard image, and calibration condition calculation means for calculating the calibration condition based on the adjustment information,
Displaying the standard image data based on the standard image data stored in the storage means;
The calibration method according to claim 4, wherein a calibration condition is calculated based on the adjustment condition. Receiving standard image data representing the standard image transmitted from the external device;
Sending the adjustment conditions to the external device;
The calibration method according to claim 4, wherein the calibration condition calculated in the external device is received. Image capturing means for acquiring image data by image capturing, communication means for transmitting / receiving data, image processing means for performing image processing on the image data to obtain processed image data, and display means for performing various displays In a program for causing a computer to execute a calibration method for a portable terminal device comprising:
A procedure for displaying a standard image as a reference for image display on the display means;
A procedure for accepting image quality adjustment for the standard image;
A procedure for generating adjustment information representing an image quality adjustment result for the standard image;
A program having a procedure for calibrating the display unit based on a calibration condition calculated based on the adjustment information. The portable terminal device further comprises storage means for storing standard image data representing the standard image, and calibration condition calculation means for calculating the calibration condition based on the adjustment information,
The procedure for displaying the standard image is a procedure for displaying the standard image data based on the standard image data stored in the storage means.
The program according to claim 7, further comprising a procedure for calculating a calibration condition based on the adjustment condition. Receiving standard image data representing the standard image transmitted from an external device;
Transmitting the adjustment condition to the external device;
The program according to claim 7, further comprising a step of receiving the calibration condition calculated in the external device.

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