JP2014204168A - Imaging apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an imaging apparatus capable of easily adjusting the white balance of a display device.SOLUTION: The imaging apparatus comprises: imaging means; first display means which displays an image obtained by the imaging means; second display means which displays an image obtained by the imaging means and is made from a material different from that of the first display means; instruction means which receives an instruction for adjusting the display properties of the first display means; and display control means which controls the second display means to display an index image having undergone a correction corresponding to the display properties of the first display means, in response to the instruction given from the instruction means.

Description

  The present invention relates to an imaging apparatus.

  Conventionally, as an imaging device, a digital camera equipped with a liquid crystal panel, a mobile phone, and the like are known. In recent years, as these imaging apparatuses, those using an organic EL display device have been put into practical use. The display characteristics of the organic EL display device may be deteriorated depending on the frequency of use. This is because the current-voltage (IV) characteristic of the organic EL element is deteriorated. When the IV characteristic changes, the value of the current flowing through the driving transistor changes, and as a result, the emission luminance changes. is there.

  In particular, red (R), green (G), and blue (B) of the organic EL element may have different brightness reduction degrees depending on the frequency of use. For example, with respect to the total lighting time of the organic EL element, the blue (B) organic EL element is most easily deteriorated, the red (R) organic EL element is then easily deteriorated, and the green (the most difficult to be deteriorated) G) organic EL element. Of course, although depending on the composition of the organic EL element, the deterioration rate is different for each color of the organic EL element.

  For this reason, the organic EL display device has a problem that the color balance gradually deteriorates as the usage time becomes longer.

  For such a problem, for example, the number of issuances of a plurality of organic EL elements used in a display device is stored separately, and is input according to the accumulated value of the number of times of light emission of each organic EL element stored. A technique for adjusting the white balance of a display panel by adjusting the signal level of a video signal is proposed (for example, Patent Document 1).

Japanese Patent Laying-Open No. 2005-010227

  However, the conventional technique disclosed in Patent Document 1 has a problem that an increase in circuit scale and an increase in cost occur in order to count the cumulative value of the number of times each organic EL element is issued.

  SUMMARY An advantage of some aspects of the invention is that it provides an imaging apparatus that can easily adjust the white balance of a display device.

  In order to achieve such an object, the imaging apparatus of the present invention displays an image obtained by the imaging means, a first display means for displaying an image obtained by the imaging means, and an image obtained by the imaging means. A second display unit made of a material different from the first display unit, an instruction unit for inputting an instruction to adjust display characteristics of the first display unit, and the second display unit according to an instruction from the instruction unit. The second display means includes display control means for displaying an index image corrected according to the display characteristics of the first display means.

  According to the present invention, the white balance of a display device can be easily adjusted.

It is a figure which shows the structure of the imaging device of a present Example. It is a flowchart which shows operation | movement of the imaging device of a present Example. It is a figure which shows the example of the user interface of a present Example. It is characteristic data which shows the relationship between the brightness correction value-brightness correction amount of an organic EL element. It is characteristic data which shows the relationship between lighting time-maximum bright correction value.

  Hereinafter, examples of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the following embodiments. The following embodiments do not limit the invention according to the claims, and all combinations of features described in the embodiments are not necessarily essential to the solution means of the invention.

  Note that each functional block described in the present embodiment is not necessarily separate hardware. That is, for example, the functions of some functional blocks may be executed by one piece of hardware. In addition, the function of one functional block or the functions of a plurality of functional blocks may be executed by some hardware linked operations. Further, the function of each functional block may be executed by a computer program developed on the memory by the CPU.

(Example 1)
In this embodiment, an imaging apparatus will be described as an example. However, any apparatus may be used as long as the apparatus includes a first display unit and a second display unit (a plurality of display units). For example, a mobile phone, a smartphone, a tablet information terminal, a notebook information terminal, and the like may be used.

  The imaging apparatus according to the present exemplary embodiment includes at least an imaging unit, a first display unit, and a second display unit. The first display unit and the second display unit are made of different materials, and the display control unit performs the second display in response to an instruction to input an instruction to adjust the display characteristics of the first display unit. The indicator image that has been corrected to reproduce the color characteristics of the initial state of the first display unit is displayed on the unit.

  With such a configuration, the imaging apparatus of the present embodiment can easily adjust the white balance of the display device.

  Hereinafter, such an imaging apparatus will be described.

<Overall configuration>
First, the configuration of the imaging apparatus 100 of the present embodiment will be described with reference to FIG.

  As illustrated in FIG. 1, the imaging apparatus 100 according to the present exemplary embodiment includes a CPU 101, a RAM 102, a ROM 103, and an operation unit 104. The imaging apparatus 100 includes an imaging unit 110, an image processing unit 111, a microphone unit 120, an audio processing unit 121, and a speaker unit 122. The imaging apparatus 100 also includes an encoding / decoding processing unit 130, an organic EL display unit 140, a first display control unit 141, a recording / playback unit 150, a recording medium 151, a communication unit 160, and a liquid crystal EVF 170. And a second display control unit 171.

  CPU is an abbreviation for Central Processing Unit. RAM is an abbreviation for Random Access Memory. ROM is an abbreviation for Read Only Memory.

  In the imaging apparatus 100 according to the present exemplary embodiment, the CPU 101 develops various programs recorded in the ROM 103 using the RAM 102 as a work memory, and controls each block of the imaging apparatus 100 according to the program. The operation unit 104 includes switches for inputting various operations such as a power button, a record button, a zoom adjustment button, an autofocus button, a menu display button, a mode switch, and a determination button. Further, any type of operation element such as a cursor key, a pointing device, a touch panel, and a dial may be used. The operation unit 104 transmits an operation signal to the CPU 101 when these keys, buttons, and touch panel are operated by the user. Each operation member of the operation unit 104 is appropriately assigned a function for each scene by selecting and operating various function icons displayed on the display unit, and functions as various function buttons. Examples of the function buttons include an end button, a return button, an image advance button, a jump button, a narrowing button, and an attribute change button. For example, when a menu button is pressed, various setting menu screens are displayed on the display unit. The user can make various settings intuitively using the menu screen displayed on the display unit, and the four-way buttons and the SET button. Note that the operation unit 104 may be a touch panel that can detect contact with the display unit. The touch panel may be any of various types of touch panels such as a resistive film method, a capacitance method, a surface acoustic wave method, an infrared method, an electromagnetic induction method, an image recognition method, and an optical sensor method. .

  The imaging unit 110 converts an optical image of a subject captured by a lens into an image signal using an imaging element such as a CCD sensor or a CMOS sensor by controlling a light amount by a diaphragm, and converts the obtained analog image signal into a digital image signal. And temporarily stored in the RAM 102. The digital image signal stored in the RAM 102 is then transmitted to the image processing unit 111. The image processing unit 111 performs an image quality adjustment process for adjusting the white balance, color, brightness, and the like of the digital image signal based on a setting value set by the user or a setting value automatically determined from the characteristics of the image. The digital image signal that has been processed is stored in the RAM 102 again. Also, the digital image signal that has undergone image quality adjustment processing or that has not yet been processed is transmitted to a first display control unit 141 and a second display control unit 171 described later, and an image being captured by the organic EL display unit 140 and the liquid crystal EVF 170. It can also be displayed. At the time of reproduction, the image processing unit 111 reads the image quality of the image data included in the still image file or the moving image file read from the recording medium 151 by the recording / reproducing unit 150 and decoded by the encoding / decoding processing unit 130. Make adjustments. Then, an image quality adjusted or unprocessed digital image signal may be transmitted to a first display control unit 141 and a second display control unit 171 described later, and displayed as an image on the organic EL display unit 140 and the liquid crystal EVF 170. it can.

  At the time of recording, the encoding / decoding processing unit 130 performs image compression processing on the digital image signal processed by the image processing unit 111 and stored in the RAM 102 to generate compressed moving image data and still image data. Then, a process of temporarily storing in the RAM 102 is performed. Further, at the time of reproduction, a process is performed in which the compressed moving image data and still image data of the image file read from the recording medium 151 is decoded to extract a digital image signal and stored in the RAM 102.

  For example, when generating moving image data, each frame of the moving image data is intra-frame encoded to generate compression-encoded moving image data. Moreover, you may produce | generate the moving image data compression-coded using the difference between several flame | frames of moving image data, a motion estimation, etc. For example, Motion JPEG, MPEG, MPEG2, H.264. H.264 (MPEG4-Part10 AVC), H.264. It is possible to generate moving image data of various known compression encoding schemes such as H.265 / HEVC. In general, intra-frame encoded frame image data is referred to as an I picture, and inter-frame encoded image data using a difference from the front frame is referred to as a P picture, and the difference from the front and rear frames is used. The inter-frame encoded image data is called a B picture. These compression methods use well-known methods and are not related to the features of the present invention, so the description is omitted. Also, when generating still image data, JPEG, H. A general compression encoding method such as a H.265 / HEVC still image profile is used. These compression encoding methods use known methods and are not related to the features of the present invention, and thus the description thereof is omitted. The still image data may be so-called RAW image data in which the digital image signal obtained by the imaging unit 110 is recorded as it is.

  The microphone unit 120 includes, for example, an omnidirectional microphone built in the housing of the imaging apparatus 100 and an AD conversion unit. In the microphone unit 120, ambient sound is collected (collected) by the microphone, and the acquired analog sound signal is converted into a digital signal by the AD converter and temporarily stored in the RAM 102. The digital audio signal stored in the RAM 102 is then transmitted to the audio processing unit 121. At the time of recording, the audio processing unit 121 performs processing such as level optimization processing and noise reduction processing on the digital audio signal stored in the RAM 102, and stores the processed digital audio signal in the RAM 102 again. Moreover, the process which compresses an audio | voice signal is performed as needed. As for the audio compression method, since a known general audio compression method such as AC3 or AAC is used, description thereof is omitted. Further, at the time of reproduction, a process for decoding the compressed audio data included in the audio file or the moving image file read from the recording medium 151 by the recording / reproducing unit 150, a process for optimizing the audio level, and the like are performed and sequentially stored in the RAM Processing is also performed. The speaker unit 122 includes a speaker and a DA converter. In the speaker unit 122, the digital audio signal stored in the RAM 102 is read out by the audio processing unit 121 and converted into an analog audio signal, and audio is output from the speaker using the analog audio signal.

  The organic EL display unit 140 is a self-luminous display unit such as an organic EL display device composed of organic EL elements, and displays an image under the control of the first display control unit 141. In the present embodiment, the organic EL display unit 140 is configured by an organic EL element, but may be an LED display or the like. The first display control unit 141 displays an image on the organic EL display unit 140 based on the digital image signal processed by the image processing unit 111 and stored in the RAM 102. The first display control unit 141 converts the input digital image signal from a luminance / color difference signal to an RGB signal, and performs offset control for individually giving an offset to R, G, and B. This offset value can be determined and set by the CPU 101 based on a user operation while the imaging apparatus 100 is in use. Further, a look-up table may be provided, and the output R, G, and B values may be set according to the input R, G, and B values. Note that the first display control unit 141 may be configured to process color signals other than RGB signals.

  The liquid crystal EVF 170 is an electronic viewfinder including a liquid crystal display device including a liquid crystal element and a backlight, and displays an image under the control of the second display control unit 171. The second display control unit 171 displays an image on the liquid crystal EVF 140 based on the digital image signal processed by the image processing unit 111 and stored in the RAM 102. The second display control unit 171 can apply a voltage corresponding to a digital image signal to be displayed on each pixel of the liquid crystal EVF 170 to form an image, and can also control the brightness of the backlight. As a method for controlling the brightness of the backlight, for example, the voltage value may be changed, the current value may be changed, or the duty ratio may be changed by PWM control. Note that the first display control unit 141 and the second display control unit 171 can also control ON / OFF of image display on the organic EL display unit 140 and the liquid crystal EVF 170, respectively, according to an instruction from the CPU 101. Also, the second display control unit 171 performs processing of chroma gain adjustment, luminance gain adjustment, hue rotation adjustment, and hue gain adjustment of the input image signal, and converts the image signal from the luminance / color difference signal to the RGB signal. Also do. In addition, when converting from the luminance / color difference signal to the RGB signal, the color space can be changed by changing the conversion coefficient. In addition, the second display control unit 171 performs gamma correction, brightness adjustment, and contrast adjustment processing on the signal converted into the RGB signal.

  In the imaging apparatus 100 of the present embodiment, one of the features is that the organic EL display unit 140 and the liquid crystal EVF 170 are different in material. Furthermore, one characteristic is that the liquid crystal EVF 170 is a material that is less likely to deteriorate than the organic EL display unit 140. Further, when the liquid crystal EVF 170 and the organic EL display unit 140 are compared, one of the characteristics is that the color reproduction range is different. Generally, when a liquid crystal display device is compared with an organic EL display device, the color reproduction range is different. Specifically, the liquid crystal display device has a color reproducibility of 70% as compared with the NTSC standard, and the organic EL display device has a color reproducibility of over 100% as compared with the NTSC standard. As described above, the imaging apparatus 100 according to the present embodiment is also characterized in that a plurality of display units having different materials and different color reproducibility are provided.

  In addition, the first display control unit 141 and the second display control unit 171 respectively perform conversion and processing of the input image based on the image quality parameter (adjustment value) stored in the RAM 102.

  In the recording / reproducing unit 150, when recording a moving image, the compressed moving image data generated by the encoding / decoding processing unit 130, the audio data generated by the audio processing unit 121, the shooting date, and the like stored in the RAM 102 are stored. Along with various information, it is written in the recording medium 151 as a moving image file. At the time of recording a still image, the still image data stored in the RAM 102 is recorded on the recording medium 151 as a still image file together with various information such as the shooting date. When recording a moving image file on the recording medium 151, a data stream composed of compressed moving image data and audio data is formed and sequentially recorded on the recording medium 151, and a file header or the like is added to a file such as FAT or exFAT. Record a video file on a recording medium in a form that conforms to the format. Further, at the time of reproduction, a moving image file or a still image file recorded on the recording medium 151 is read according to the aforementioned file format. The read moving image file and still image file are analyzed for headers by the CPU 101, and compressed moving image data and still image data are extracted. The extracted compressed moving image data and still image data are stored in the RAM 102 and decoded by the encoding / decoding processing unit 130.

  Further, the recording medium 151 may be a recording medium built in the imaging apparatus or a removable recording medium. For example, the recording medium includes all types of recording media such as a hard disk, an optical disk, a magneto-optical disk, a CD-R, a DVD-R, a magnetic tape, a nonvolatile semiconductor memory, and a flash memory. When using removable recording media, the recording / reproducing unit 150 includes a mechanism for loading and unloading the removable recording media.

  The communication unit 160 transmits and receives control signals, moving image files, still image files, various data, and the like to and from an external device different from the imaging device 100, and can be connected regardless of wired connection or wireless connection. It is. Note that any communication method may be used.

  Here, the above-described image processing unit 111, audio processing unit 121, encoding / decoding processing unit 130, first display control unit 141, recording / playback unit 150, and second display control unit 171 It may be a microcomputer equipped with a program for executing a function. Further, the program for executing the above-described processing recorded in the ROM 103 by the CPU 101 may be loaded into the RAM 102 and executed.

  Note that the imaging apparatus 100 according to the present exemplary embodiment records a moving image file in the “QuickTime (registered trademark) format” as an example, but any format may be used.

  In this embodiment, the file management system of the recording medium 151 will be described as using a FAT file system generally used in embedded devices. Since the technology of the FAT file system itself is widely known, only the characteristic operation of this embodiment will be described. Further, the NTFS format or the exFAT format which is a FAT file format may be used.

<Basic operation>
Next, the operation of the imaging apparatus 100 according to the present embodiment will be described.

  In the imaging apparatus 100 according to the present exemplary embodiment, when the operation unit 104 is operated by the user and an instruction to turn on the power is input from the investigation unit 104, the CPU 101 supplies power to each block of the imaging apparatus 100 with a power supply unit (not illustrated). Control to supply.

  Next, the CPU 101 determines whether the mode of the imaging apparatus 100 set by the operation unit 104 is a reproduction mode, a still image recording mode, or a moving image recording mode.

  First, the moving image recording mode will be described.

  When the camera mode set by the operation unit 104 is the moving image recording mode, the CPU 101 controls each block of the imaging apparatus 100 and causes the following operations to be executed.

  First, the imaging unit 110 transmits the obtained digital image signal to the RAM 102 and temporarily stores it. Next, the image processing unit 111 performs the above-described various image quality adjustment processes on the digital image signal stored in the RAM 102 according to the set shooting setting, and stores the processed digital image signal in the RAM 102 again. Further, the first display control unit 141 reads the processed digital image signal or the unprocessed digital image signal stored in the RAM 102 and causes the organic EL display unit 140 to display the read digital image signal.

  That is, an image based on the image captured by the imaging unit 110 is displayed on the organic EL display unit 140 until an instruction to start moving image recording is input from the operation unit 104.

  Next, when an instruction to start moving image recording is input from the operation unit 104, the imaging unit 110 transmits the obtained digital image signal to the RAM 102 and temporarily stores the digital image signal. Next, the image processing unit 111 performs the above-described various image quality adjustment processes on the digital image signal stored in the RAM 102 according to the set shooting setting, and stores the processed digital image signal in the RAM 102 again. Further, the first display control unit 141 reads the processed digital image signal or the unprocessed digital image signal stored in the RAM 102 and causes the organic EL display unit 140 to display the read digital image signal. Furthermore, the encoding / decoding processing unit 130 performs an encoding process for encoding the digital image signal processed by the image processing unit 111 as moving image data. For example, the encoding process includes Motion JPEG, MPEG, H.264, and so on. H.264 (MPEG4-Part10 AVC), H.264. There are various known compression encoding scheme processes such as H.265 / HEVC.

  The audio processing unit 121 applies various adjustment processes to the digital audio signal input from the microphone unit, and stores the processed digital audio signal in the RAM 102 again. Furthermore, if necessary, encoding processing is executed in accordance with a preset audio encoding method, and the obtained encoded audio data is stored in the RAM 102. In the following description, although description of audio data is omitted, it is assumed that it is processed together with moving image data.

  Next, the recording / playback unit 150 records the encoded moving image data temporarily stored in the RAM 102 as a moving image file compatible with the file system of the recording medium 151. Also, necessary management information generated by the CPU 101 is included in the moving image file and recorded.

  The CPU 101 causes each block of the imaging apparatus 100 to execute a series of processes until an instruction to end moving image recording is input.

  Next, when a moving image recording end instruction is input from the operation unit 104, the encoding / decoding processing unit 130 operates until encoding of the digital image signal until the recording end instruction is input, and thereafter Exit. The recording / reproducing unit 150 also operates until the encoded moving image data temporarily stored in the RAM 102 is recorded on the recording medium 151, and then ends the operation. Other imaging units 110, image processing unit 111, organic EL display unit 140, and first display control unit 141 continue to operate.

  As described above, the imaging apparatus 100 according to the present embodiment records the moving image file on the recording medium 151 in the moving image recording mode.

  Next, the playback mode will be described.

  When the playback mode is set by the operation unit 104, the CPU 101 transmits a control signal to each block of the imaging apparatus 100 so as to shift to the playback state, and performs the following operation.

  The recording / playback unit 150 reads a moving image file that is recorded on the recording medium 151 and includes encoded moving image data and encoded audio data. The CPU 101 buffers the read encoded moving image data and encoded audio data in the RAM 102. Then, the CPU 101 controls the encoding / decoding processing unit 130 so as to decode the encoded moving image data. In addition, the CPU 101 controls the audio processing unit 121 to decode the encoded audio data.

  Then, the CPU 101 sends each frame data of the moving image data decoded by the encoding / decoding processing unit 130 to the first display control unit 141 and causes the organic EL display unit 140 to display an image of each frame. In addition, the audio processing unit 121 transmits the decoded audio data to the speaker unit 122, and outputs audio corresponding to the audio data.

  As described above, the imaging apparatus 100 according to the present embodiment reproduces a moving image file in the reproduction mode, and displays an image based on the moving image data of the moving image file on the organic EL display unit 140.

  In this embodiment, an example in which an image is displayed on the organic EL display unit 140 has been described. However, an image may be displayed on the liquid crystal EVF 170 in the same manner.

<Image quality adjustment operation>
Here, the characteristic operation of the present embodiment will be described.

  The imaging apparatus 100 of the present embodiment counts the total usage time of the imaging apparatus 100 or the total usage time of the organic EL display unit 140 by a timer (not shown) and records it in the nonvolatile memory. Further, the ROM 103 stores characteristic data indicating the relationship between the brightness correction value and the luminance correction amount of the organic EL element (an example is shown in FIG. 4), and characteristic data indicating the relationship between the lighting time and the maximum brightness correction value (FIG. 5). Is stored). The characteristic data indicating the relationship between the brightness correction value and the brightness correction amount of the organic EL element indicates how much the brightness correction amount of the organic EL element of each color is set with respect to the blue (B) brightness correction value set by the user. It is shown. The characteristic data indicating the relationship between the lighting time and the maximum brightness correction value indicates the maximum value of the blue (B) brightness correction value with respect to the usage time of the organic EL display unit 140. That is, when the blue (B) bright correction value exceeds the maximum value corresponding to the current usage time, it is understood that the user may have overcorrected the color balance.

  In the imaging apparatus 100 according to the present exemplary embodiment, when the user operates the operation unit 104 to set the image quality adjustment mode in each recording mode and reproduction mode described above, the CPU 101 controls each block of the imaging apparatus 100. The following operations are performed.

  FIG. 2 is a flowchart for explaining the operation in the image quality adjustment mode of the imaging apparatus 100 of the present embodiment. The flowchart of FIG. 2 is a flowchart starting from when the image quality adjustment mode is set, and is executed by the CPU 101 controlling each block of the imaging apparatus 100 based on a program developed in the RAM 102. It is processing.

  When the image quality adjustment mode is set, the CPU 101 determines the ON / OFF state of the liquid crystal EVF 170 (S201). If the image is not displayed on the liquid crystal EVF 170 (in the case of OFF in S201), the CPU 101 controls the second display control unit 171 to display the image on the liquid crystal EVF 170 (S202), and then performs the processing. The process proceeds to S203. On the other hand, if the image is not in a state of being displayed on the liquid crystal EVF 170 (in the case of OFF in S201), the CPU 101 proceeds to S203.

  Next, the CPU 101 controls the second display control unit 171 to change the image quality adjustment parameter of the liquid crystal EVF 170. Specifically, an image quality adjustment parameter for reproducing a predetermined color in the initial state of the organic EL display unit 140 is read from the ROM 102 and changed to the second display control unit 171. By using this image quality adjustment parameter, the second display control unit 171 can cause the liquid crystal EVF 170 to reproduce the predetermined color of the organic EL display unit 140 in the initial state. Here, the predetermined color is, for example, a skin color or a memory color. For example, the balance between white and other colors (white balance) may be reproduced.

  When not in the image quality adjustment mode, the first display control unit 141 and the second display control unit 171 respectively adjust the organic EL display unit 140 and the liquid crystal EVF 170 so as to have a balance close to the so-called master monitor color balance. The image quality is adjusted. That is, in the initial state of the organic EL display unit 140, the image quality is set such that the balance between the skin color and the gray image color in the organic EL display unit 140 is close to the balance between the skin color and the gray image color on the master monitor. Adjustment parameters are set. Also in the liquid crystal EVF 170, image quality adjustment parameters are set so that the balance between the flesh color in the liquid crystal EVF 170 and the color of the gray image is close to the balance between the flesh color on the master monitor and the color of the gray image.

  That is, in S203, the image quality adjustment parameter of the liquid crystal EVF 170 is set from a normal parameter to a parameter that can reproduce a specific color in the initial state of the organic EL display unit 140. In this way, the user can adjust the image quality while comparing the image displayed on the liquid crystal EVF 170 with the image displayed on the organic EL display unit 140, and adjust the image quality of the organic EL display unit 140. Can do.

  Next, the CPU 101 controls the first display control unit 141 and the second display control unit 171 so as to display a user interface for color balance adjustment on the organic EL display unit 140 and the liquid crystal EVF 170 (S204). . An example of a user interface for color balance adjustment is shown in FIG. As shown in FIG. 3, a red (R) adjustment area and a blue (B) adjustment area are displayed on the user interface, and the user operates the position of the pointer displayed on each adjustment area. The unit 104 can be operated and moved. In addition to the user interface image, a color chart and a sample image are displayed simultaneously.

  When the user moves the position of the pointer displayed on each adjustment area on the user interface by operating the operation unit 104, the CPU 101 controls the first display control unit 141 according to the position of each pointer. The image quality adjustment parameter is changed (S205). The CPU 101 can set an offset value for the RGB signal in the first display control unit 141 according to the image quality adjustment parameter. In this embodiment, the red component bright value can be adjusted using the red (R) adjustment region, and the blue component bright value can be adjusted using the blue (R) adjustment region.

  Here, the image quality adjustment parameter of the liquid crystal EVF 170 is set to a parameter capable of reproducing a specific color in the initial state of the organic EL display unit 140. Therefore, the color chart and the sample image displayed on the liquid crystal EVF 170 reproduce the specific color in the initial state of the organic EL display unit 140. The user adjusts the color by operating the user interface while confirming these index images displayed on the liquid crystal EVF 170.

  Next, the CPU 101 determines whether or not an instruction to end the image quality adjustment mode is input in response to an instruction to switch to another mode, power off, or the like (S206). Repeat the process. When an instruction to end is input, the CPU 101 next determines whether the luminance of the organic EL display unit 140 is appropriately corrected based on the color balance adjustment result adjusted by the user (S207).

  For this purpose, first, the CPU 101 determines the total usage time of the imaging apparatus 100 counted by a timer (not shown) or the organic EL display unit based on the characteristic data indicating the relationship between the lighting time and the maximum brightness correction value shown in FIG. The maximum brightness correction value is calculated from the total usage time of 140. Then, it is determined whether the blue (B) bright correction value currently set by the user is larger or smaller than the calculated maximum bright correction value. If the blue (B) bright correction value currently set by the user is small, it is determined that an appropriate correction has been made (Yes in S207), and luminance correction processing is performed (S208). If the blue (B) bright correction value set by the user is large, it is determined that appropriate correction has not been performed, and the process shown in the flowchart of FIG. 2 is terminated without performing the process of S208. .

  When performing the brightness correction process (S208), the CPU 101, based on the characteristic data indicating the relationship between the brightness correction value and the brightness correction amount of the organic EL element shown in FIG. 4, based on the blue (B) brightness correction value. , Red (R), green (G) organic EL element brightness is corrected. As shown in FIG. 4, based on the blue (B) bright correction value, the first is added so that the luminance of the red (R) and green (G) organic EL elements is uniformly increased. The display control unit 141 is controlled.

  In this embodiment, based on the characteristic data indicating the relationship between the brightness correction value and the brightness correction amount of the organic EL element shown in FIG. 4, the organic color of all colors is based on the blue (B) brightness correction value. Although the offset values of the EL elements are determined, the offset values of the organic EL elements of all colors may be determined based on the adjustment values of the red (R) component and the green (G) component.

  In S203, the liquid crystal EVF 170 is made to reproduce a specific color in the initial state of the organic EL display unit 140. However, the luminance of the backlight of the liquid crystal EVF 170 may be adjusted as necessary.

  As described above, when the image quality adjustment mode is set, the image quality adjustment parameter of the liquid crystal EVF 170 is set to a parameter that can reproduce a specific color in the initial state of the organic EL display unit 140. Therefore, the color chart and the sample image displayed on the liquid crystal EVF 170 reproduce the specific color in the initial state of the organic EL display unit 140. Therefore, the user can adjust the color while confirming the color chart and sample image displayed on the liquid crystal EVF 170, so that the adjustment work can be easily performed.

  Further, in this embodiment, in the image quality adjustment mode, the image quality adjustment parameter of the liquid crystal EVF 170 is set to a parameter that can reproduce a specific color in the initial state of the organic EL display unit 140. May be.

(Other embodiments)
The above-described embodiment can also be realized in software by a computer of a system or apparatus (or CPU, MPU, etc.). Therefore, the computer program itself supplied to the computer in order to implement the above-described embodiment by the computer also realizes the present invention. That is, the computer program itself for realizing the functions of the above-described embodiments is also one aspect of the present invention.

  The computer program for realizing the above-described embodiment may be in any form as long as it can be read by a computer. For example, it can be composed of object code, a program executed by an interpreter, script data supplied to the OS, but is not limited thereto. A computer program for realizing the above-described embodiment is supplied to a computer via a storage medium or wired / wireless communication. Examples of the storage medium for supplying the program include a magnetic storage medium such as a flexible disk, a hard disk, and a magnetic tape, an optical / magneto-optical storage medium such as an MO, CD, and DVD, and a nonvolatile semiconductor memory.

  As a computer program supply method using wired / wireless communication, there is a method of using a server on a computer network. In this case, a data file (program file) that can be a computer program forming the present invention is stored in the server. The program file may be an executable format or a source code. Then, the program file is supplied by downloading to a client computer that has accessed the server. In this case, the program file can be divided into a plurality of segment files, and the segment files can be distributed and arranged on different servers. That is, a server apparatus that provides a client computer with a program file for realizing the above-described embodiment is also one aspect of the present invention.

  In addition, a storage medium in which the computer program for realizing the above-described embodiment is encrypted and distributed is distributed, and key information for decrypting is supplied to a user who satisfies a predetermined condition, and the user's computer Installation may be allowed. The key information can be supplied by being downloaded from a homepage via the Internet, for example. Further, the computer program for realizing the above-described embodiment may use an OS function already running on the computer. Further, a part of the computer program for realizing the above-described embodiment may be configured by firmware such as an expansion board attached to the computer, or may be executed by a CPU provided in the expansion board. Good.

Claims (4)

Imaging means;
First display means for displaying an image obtained by the imaging means;
A second display means made of a material different from the first display means for displaying an image obtained by the imaging means;
Instruction means for inputting an instruction to adjust the display characteristics of the first display means;
Display control means for causing the second display means to display an index image that has been corrected according to the display characteristics of the first display means in response to an instruction from the instruction means. apparatus.   The imaging apparatus according to claim 1, wherein the first display unit is a self-luminous display unit.   The imaging apparatus according to claim 1, wherein the first display unit is an organic EL display device.   The imaging apparatus according to claim 1, wherein the second display unit is a liquid crystal display device.

Images