JP3625371B2 - Image processing apparatus, control method for image processing apparatus, and storage medium - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an image processing apparatus that captures, records, and reproduces still images and moving images, a control method for the image processing apparatus, and a storage medium.
[0002]
[Prior art]
Conventionally, image processing apparatuses such as electronic cameras for recording and reproducing still images and moving images using a memory card having a solid-state memory element as a recording medium are already on the market, and electronic cameras equipped with an electronic viewfinder such as a color liquid crystal panel are also sold. Has been.
[0003]
According to these electronic cameras, it is possible to continuously display images before photographing and to determine the composition by the user of the electronic camera, or to reproduce and display the photographed images for confirmation.
[0004]
In particular, the function of reproducing a photographed image immediately after photographing is highly convenient and is a useful function for the user of the electronic camera.
[0005]
[Problems to be solved by the invention]
In such a conventional image processing apparatus such as an electronic camera, the captured image data is converted into an image signal format suitable for image reproduction on the image display unit so that the captured image can be easily reproduced and displayed immediately. It was later written on a recording medium.
[0006]
For this reason, for example, a combination of a luminance Y signal, a color difference RY signal, a color difference BY signal, or a combination of RGB signals according to the signal input of the image display unit, regardless of the pixel configuration of the image pickup means such as a CCD. Even if an electronic camera uses an imaging means with a unique pixel configuration with excellent image quality, if it has a function to reproduce and display the captured image immediately, an image that takes advantage of that image quality Recording in signal form was not performed.
[0007]
On the other hand, in the case of an electronic camera that writes image data to a recording medium in the form of an image signal according to the pixel configuration of the imaging means such as a CCD, the recording image quality is sufficient to ensure the capability of the imaging means. Since the image signal form is not suitable for image reproduction on the image display unit, the photographed image cannot be reproduced and displayed as it is.
[0008]
The present invention has been made under such circumstances,Change the display on the display means according to the compression method of the captured image dataAn object of the present invention is to provide an image processing apparatus, a control method for the image processing apparatus, and a storage medium.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, an image processing apparatus is as follows (1)., (2), The control method of the image processing device is as follows (3), (4) And then the storage medium (5).
[0010]
(1) An image processing apparatus for recording and reproducing and displaying captured still images and / or moving images on a recording medium,RemovableRecording means, display means, andControl means andWithThe control means processes the photographed image data scheduled to be recorded and displays it on the display means depending on the compression method of the photographed image data recorded on the recording medium. Separately, display image data is created and processed to determine whether to display on the display meansImage processing device.
[0011]
(2)The difference in the compression method of the image data in (1) is an image processing apparatus which is a difference between JPEG and RAW.
[0013]
(3A control method of an image processing apparatus for recording and reproducing and displaying captured still images and / or moving images on a recording medium,Depending on the difference between the compression method of the photographed image data recorded on the removable recording medium and the selected compression method, the photographed image data scheduled to be recorded is processed and displayed on the display means, or A step of determining and processing whether display image data is created separately from the recorded image data to be displayed and displayed on the display meansAnd a control method for the image processing apparatus.
[0014]
(4)The method for controlling an image processing apparatus, wherein the step (3) of selecting the compression method is a step of selecting either JPEG or RAW.
[0016]
(5) (3)Or(4A storage medium storing a program for realizing the control method of the image processing apparatus according to (1).
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to examples of image processing apparatuses. The present invention is not limited to an image processing apparatus, but in the form of a control method for the image processing apparatus, and further in the form of a storage medium such as a CD-ROM storing a program for realizing the control method for the image processing apparatus. It can be implemented similarly.
[0018]
【Example】
FIG. 1 is a block diagram illustrating a configuration of an “image processing apparatus” according to an embodiment. In FIG. 1, reference numeral 100 denotes an image processing apparatus. Reference numeral 10 denotes a photographing lens, 12 denotes a shutter having a diaphragm function, 14 denotes an image sensor that converts an optical image into an electrical signal, and 16 denotes an A / D converter that converts an analog signal output from the image sensor 14 into a digital signal.
[0019]
A timing generation circuit 18 supplies a clock signal and a control signal to the image sensor 14, the A / D converter 16, and the D / A converter 26, and is controlled by the memory control circuit 22 and the system control circuit 50.
[0020]
An image processing circuit 20 performs predetermined pixel interpolation processing and color conversion processing on the data from the A / D converter 16 or the data from the memory control circuit 22. Further, the image processing circuit 20 performs predetermined calculation processing using the captured image data, and the system control circuit 50 controls the exposure control means 40 and the distance measurement control means 42 based on the obtained calculation result. TTL (through-the-lens) AF (autofocus) processing, AE (automatic exposure) processing, and EF (flash pre-emission) processing are performed. Further, the image processing circuit 20 performs predetermined arithmetic processing using captured image data, and also performs TTL AWB (auto white balance) processing based on the obtained arithmetic result.
[0021]
A memory control circuit 22 controls the A / D converter 16, the timing generation circuit 18, the image processing circuit 20, the image display memory 24, the D / A converter 26, the memory 30, and the compression / decompression circuit 32.
[0022]
The data of the A / D converter 16 is written into the image display memory 24 or the memory 30 via the image processing circuit 20 and the memory control circuit 22 or the data of the A / D converter 16 is directly passed through the memory control circuit 22. It is.
[0023]
Reference numeral 24 denotes an image display memory, 26 denotes a D / A converter, 28 denotes an image display unit including a TFT LCD, and the image data for display written in the image display memory 24 passes through the D / A converter 26. Displayed by the image display unit 28. If the image data captured using the image display unit 28 is sequentially displayed, the electronic viewfinder function can be realized. The image display unit 28 can arbitrarily turn on / off the display according to an instruction from the system control circuit 50. When the display is turned off, the power consumption of the image processing apparatus 100 can be greatly reduced. I can do it.
[0024]
Reference numeral 30 denotes a memory for storing captured still images and moving images, and has a sufficient storage capacity to store a predetermined number of still images and a predetermined time of moving images. This makes it possible to write a large amount of images to the memory 30 at high speed even in continuous shooting or panoramic shooting in which a plurality of still images are continuously shot. The memory 30 can also be used as a work area for the system control circuit 50.
[0025]
Reference numeral 32 denotes a compression / decompression circuit that compresses and decompresses image data by adaptive discrete cosine transform (ADCT) or the like, reads an image stored in the memory 30, performs compression processing or decompression processing, and stores the processed data in the memory 30. Write to.
[0026]
Reference numeral 40 denotes an exposure control means for controlling the shutter 12 having an aperture function, and has a flash light control function in cooperation with the flash 48.
[0027]
Reference numeral 42 denotes a distance measuring control means for controlling the focusing of the photographing lens 10, reference numeral 44 denotes a zoom control means for controlling zooming of the photographing lens 10, and reference numeral 46 denotes a barrier control means for controlling the operation of the protection means 102 as a barrier.
[0028]
A flash 48 has an AF auxiliary light projecting function and a flash light control function.
[0029]
The exposure control means 40 and the distance measurement control means 42 are controlled using the TTL method, and the system control circuit 50 uses the exposure control means 40 and the distance measurement based on the calculation result obtained by calculating the captured image data by the image processing circuit 20. Control is performed on the control means 42.
[0030]
Reference numeral 50 denotes a system control circuit that controls the entire image processing apparatus 100, and reference numeral 52 denotes a memory that stores constants, variables, programs, and the like for operation of the system control circuit 50.
[0031]
Reference numeral 54 denotes a display unit such as a liquid crystal display device or a speaker that displays an operation state or a message using characters, images, voices, or the like in accordance with execution of a program in the system control circuit 50. One or a plurality of places are provided near the portion where they are easily visible, and are configured by a combination of, for example, an LCD, an LED, a sound generation element, and the like. The display unit 54 has a part of its function installed in the optical viewfinder 104.
[0032]
Among the display contents of the display unit 54, what is displayed on the LCD or the like includes, for example, single shot / continuous shooting display, self-timer display, compression rate display, recording pixel number display, recording number display, and remaining image number display. , Shutter speed display, Aperture value display, Exposure compensation display, Flash display, Red-eye reduction display, Macro shooting display, Buzzer setting display, Clock battery level display, Battery level display, Error display, Multi-digit number information display , Attachment / detachment state display of the recording media 200 and 210, communication I / F operation display, date / time display, display showing the connection state with an external computer, and the like.
[0033]
Further, among the display contents of the display unit 54, what is displayed in the optical viewfinder 104 is, for example, in-focus display, photographing preparation completion display, camera shake warning display, flash charge display, flash charge completion display, shutter speed display, There are aperture value display, exposure compensation display, recording medium writing operation display, and the like.
[0034]
Further, among the display contents of the display unit 54, what is displayed on the LED or the like includes, for example, in-focus display, photographing preparation completion display, camera shake warning display, flash charging display, flash charging completion display, recording medium writing operation display, Macro shooting setting notification display, secondary battery charge status display, etc.
[0035]
And what is displayed on a lamp | ramp etc. among the display contents of the display part 54 includes a self-timer notification lamp etc., for example. This self-timer notification lamp may be used in common with AF auxiliary light.
[0036]
Reference numeral 56 denotes an electrically erasable / recordable nonvolatile memory such as an EEPROM.
[0037]
Reference numerals 60, 62, 64, 66, 68, 70, and 72 denote operation means for inputting various operation instructions of the system control circuit 50, such as switches, dials, touch panels, pointing by line-of-sight detection, voice recognition devices, and the like. Consists of a single or a plurality of combinations.
[0038]
Here, a specific description of these operating means will be given.
[0039]
Reference numeral 60 denotes a mode dial switch, which can switch and set various function modes such as power-off, automatic shooting mode, shooting mode, panoramic shooting mode, playback mode, multi-screen playback / erase mode, and PC connection mode.
[0040]
Reference numeral 62 denotes a shutter switch SW1 which is turned on when a shutter button (not shown) is being operated (half-pressed), and AF (autofocus) processing, AE (automatic exposure) processing, AWB (auto white balance) processing, EF (flash pre-flash). ) Instruct the start of operations such as processing.
[0041]
A shutter switch SW2 64 is turned on when a shutter button (not shown) is completed (fully pressed), and a signal read from the image sensor 12 is transferred to the memory 30 via the A / D converter 16 and the memory control circuit 22. Exposure processing for writing image data, development processing using operations in the image processing circuit 20 and the memory control circuit 22, reading out image data from the memory 30, compression in the compression / decompression circuit 32, and image data on the recording medium 200 or 210 An instruction to start the operation of a series of processing called recording processing to be written is given.
[0042]
Reference numeral 66 denotes an image display ON / OFF switch that can set ON / OFF of the image display unit 28. With this function, when taking an image using the optical viewfinder 104, it is possible to save power by cutting off the current supply to the image display unit 28 including a TFT LCD or the like.
[0043]
Reference numeral 68 denotes a quick review ON / OFF switch, which sets a quick review function for automatically reproducing image data taken immediately after photographing. In this embodiment, it is assumed that a function for setting the quick review function when the image display unit 28 is turned off is provided.
[0044]
Reference numeral 70 denotes an operation unit including various buttons and a touch panel, and a menu button, a set button, a macro button, a multi-screen playback page break button, a flash setting button, a single shooting / continuous shooting / self-timer switching button, a menu movement + (plus). Buttons, menu movement-(minus) button, reproduction image movement + (plus) button, reproduction image movement-(minus) button, shooting image quality selection button, exposure correction button, date / time setting button, and the like.
[0045]
Reference numeral 72 denotes a compression mode switch, which is a switch for selecting a compression rate for JPEG compression, or for selecting a CCD RAW mode in which a signal from the image sensor 14 is directly digitized and recorded on a recording medium.
[0046]
For example, a normal mode and a fine mode are prepared as JPEG compression modes.
[0047]
In the JPEG compression mode, image data read from the image sensor 14 and written to the memory 30 via the A / D converter 16, the image processing circuit 20, and the memory control circuit 22 are read and compressed / compressed. After compression to the compression ratio set by the decompression circuit 32, recording is performed on the recording medium 200 or 210.
[0048]
In the CCD RAW mode, the image data is read as it is for each line in accordance with the pixel arrangement of the color filter of the image sensor 14, and the image data written in the memory 30 via the A / D converter 16 and the memory control circuit 22. Are recorded on the recording medium 200 or 210.
[0049]
Reference numeral 80 denotes a power supply control means, which is composed of a battery detection circuit, a DC-DC converter, a switch circuit for switching a block to be energized, and the like. In addition, the DC-DC converter is controlled based on an instruction from the system control circuit 50, and a necessary voltage is supplied to each unit including the recording medium for a necessary period.
[0050]
82 is a connector, 84 is a connector, and 86 is a primary battery such as an alkaline battery or a lithium battery, a secondary battery such as a NiCd battery, NiMH battery or Li battery, an AC adapter, or the like.
[0051]
90 and 94 are interfaces with a recording medium such as a memory card or a hard disk, 92 and 96 are connectors for connecting to a recording medium such as a memory card or a hard disk, and 98 is a recording medium 200 or 210 attached to the connector 92 or 96. Recording medium attachment / detachment detecting means for detecting whether or not the recording medium is present.
[0052]
In this embodiment, it is assumed that there are two interfaces and connectors for attaching the recording medium. Of course, the interface and the connector for attaching the recording medium may have a single or a plurality of systems, any number of systems. Moreover, it is good also as a structure provided with combining the interface and connector of a different standard.
[0053]
The interface and the connector may be configured using a PCMCIA card, a CF (compact flash) card, or the like that conforms to a standard.
[0054]
Further, when the interfaces 90 and 94, and the connectors 92 and 96 are configured using a PCMCIA card or a CF (compact flash) card or the like, a LAN card, modem card, USB card, IEEE 1394 card, P1284 card, etc. By connecting various communication cards such as communication cards such as SCSI card and PHS, image data and management information attached to the image data can be transferred to and from peripheral devices such as other computers and printers. .
[0055]
Reference numeral 102 denotes protection means that is a barrier that prevents the imaging unit from being soiled or damaged by covering the imaging unit including the lens 10 of the image processing apparatus 100.
[0056]
Reference numeral 104 denotes an optical viewfinder, which can take an image using only the optical viewfinder without using the electronic viewfinder function of the image display unit 28. In the optical viewfinder 104, functions of the display unit 54, such as a focus display, a camera shake warning display, a flash charge display, a shutter speed display, an aperture value display, an exposure correction display, and the like are installed.
[0057]
A communication unit 110 has various communication functions such as RS232C, USB, IEEE1394, P1284, SCSI, modem, LAN, and wireless communication.
[0058]
Reference numeral 112 denotes a connector for connecting the image processing apparatus 100 to another device by the communication unit 110 or an antenna in the case of wireless communication.
[0059]
Reference numeral 200 denotes a recording medium such as a memory card or a hard disk. The recording medium 200 includes a recording unit 202 composed of a semiconductor memory, a magnetic disk, or the like, an interface 204 with the image processing apparatus 100, and a connector 206 for connecting to the image processing apparatus 100.
[0060]
Reference numeral 210 denotes a recording medium such as a memory card or a hard disk. The recording medium 210 includes a recording unit 212 composed of a semiconductor memory, a magnetic disk, and the like, an interface 214 with the image processing apparatus 100, and a connector 216 that connects to the image processing apparatus 100.
[0061]
The operation of the present embodiment will be described with reference to FIGS. 2, 3, 4, 5, 6, 7 and 8. FIG.
[0062]
2, 3 and 4 show flowcharts of the main routine of the image processing apparatus 100 of this embodiment. The operation of the image processing apparatus 100 will be described with reference to FIGS.
[0063]
Upon power-on such as battery replacement, the system control circuit 50 initializes flags, control variables, and the like (S101), and initializes the image display on the image display unit 28 to an OFF state (S102).
[0064]
The system control circuit 50 determines the setting position of the mode dial 60, and if the mode dial 60 is set to power OFF (S103), the display of each display unit is changed to the end state, and the barrier of the protection unit 102 is changed. Is closed to protect the imaging unit, and necessary parameters, setting values, and setting modes including flags and control variables are recorded in the nonvolatile memory 56, and each part of the image processing apparatus 100 including the image display unit 28 by the power control unit 80. After performing a predetermined end process such as shutting off unnecessary power (S105), the process returns to S103.
[0065]
If the mode dial 60 is set to the shooting mode (S103), the process proceeds to S106.
[0066]
If the mode dial 60 has been set to another mode (S103), the system control circuit 50 executes processing according to the selected mode (S104), and returns to S103 when the processing is completed.
[0067]
The system control circuit 50 determines whether or not there is a problem in the operation of the image processing apparatus 100 with respect to the remaining capacity or operation status of the power supply 86 configured by a battery or the like by the power control means 80 (S106). For example, after a predetermined warning is displayed by image or sound using the display unit 54 (S108), the process returns to S103.
[0068]
If there is no problem with the power supply 86 (S106), the system control circuit 50 determines whether the operation state of the recording medium 200 or 210 has a problem with the operation of the image processing apparatus 100, particularly with respect to the recording / reproducing operation of image data on the recording medium. (S107), and if there is a problem, a predetermined warning display is performed by an image or sound using the display unit 54 (S108), and the process returns to S103.
[0069]
If there is no problem in the operation state of the recording medium 200 or 210 (S107), the display unit 54 is used to display various setting states of the image processing apparatus 100 using images and sounds (S109). If the image display of the image display unit 28 is ON, the image display unit 28 is also used to display various setting states of the image processing apparatus 100 using images and sounds.
[0070]
The system control circuit 50 checks the setting state of the quick review ON / OFF switch 68 (S110), sets the quick review flag if it is set to quick review ON (S111), and is set to quick review OFF. If so, the quick review flag is canceled (S112).
[0071]
The state of the quick review flag is stored in the internal memory of the system control circuit 50 or the memory 52.
[0072]
Subsequently, the system control circuit 50 checks the setting state of the image display ON / OFF switch 66 (S113). If the image display ON is set, the system control circuit 50 sets the image display flag (S114) and the image display unit. The 28 image display is set to the ON state (S115), and the captured image data is set to the through display state for sequentially displaying (S116), and the process proceeds to S119.
[0073]
In the through display state, the data sequentially written in the image display memory 24 via the image sensor 12, the A / D converter 16, the image processing circuit 20, and the memory control circuit 22 are converted into the memory control circuit 22 and the D The electronic finder function is realized by sequentially displaying on the image display unit 28 via the / A converter 26.
[0074]
If the image display ON / OFF switch 66 is set to image display OFF (S113), the image display flag is canceled (S117), and the image display on the image display unit 28 is set to the OFF state (S118). The process proceeds to S119.
[0075]
When the image display is OFF, shooting is performed using the optical viewfinder 104 without using the electronic viewfinder function of the image display unit 28. In this case, it is possible to reduce power consumption of the image display unit 28, the D / A converter 26, and the like that consume a large amount of power.
[0076]
The state of the image display flag is stored in the internal memory of the system control circuit 50 or the memory 52.
[0077]
Subsequently, the system control circuit 50 checks the setting state of the compression mode switch 72 (S119), and if the image compression mode is set to the CCD RAW mode, sets the CCD RAW mode flag (S120) and S131 (FIG. Go to step 3).
[0078]
In the CCD RAW mode, the image data is read as it is for each line in accordance with the pixel arrangement of the color filter of the image sensor 14 and written into the memory 30 via the A / D converter 16 and the memory control circuit 22. The read image data is read out and recorded on the recording medium 200 or 210.
[0079]
In the CCD RAW mode, an image signal captured by the image sensor 14 can be recorded as it is on a recording medium, so that high-quality recording can be performed, but the amount of image data to be recorded increases.
[0080]
If the compression mode switch 72 is set to the JPEG mode (S119), the JPEG mode flag is set (S121), and the process proceeds to S131.
[0081]
In the JPEG mode, the image data read from the image sensor 14 and written in the memory 30 via the A / D converter 16, the image processing circuit 20, and the memory control circuit 22 are read out and compressed / decompressed. After compressing to the compression rate set by 32, recording is performed on the recording medium 200 or 210.
[0082]
In the JPEG mode, the image signal captured by the image sensor 14 can be compressed and recorded on a recording medium. Therefore, it is possible to reduce the amount of image data to be recorded and perform more recording. When the JPEG method that is irreversible compression is used, the image quality deteriorates according to the compression rate.
[0083]
The state of the compression mode flag is stored in the internal memory of the system control circuit 50 or the memory 52.
[0084]
If the shutter switch SW1 is not pressed (S131) (see FIG. 3), the process returns to S103.
[0085]
If the shutter switch SW1 is pressed (S131), the system control circuit 50 determines the state of the image display flag stored in the internal memory of the system control circuit 50 or the memory 52 (S132), and the image display flag is set. If so, the display state of the image display unit 28 is set to the freeze display state (S133), and the process proceeds to S134.
[0086]
In the freeze display state, rewriting of the image data in the image display memory 24 via the image sensor 12, the A / D converter 16, the image processing circuit 20, and the memory control circuit 22 is prohibited, and the last written image data Is displayed by the image display unit 28 via the memory control circuit 22 and the D / A converter 26, thereby displaying the frozen video on the electronic finder 28.
[0087]
If the image display flag has been canceled (S132), the process proceeds to S134.
[0088]
The system control circuit 50 performs a distance measurement process to focus the photographing lens 10 on the subject, performs a photometry process, and determines an aperture value and a shutter time (S134). In the photometric process, the flash is set if necessary. Details of the distance measurement / photometry processing S134 will be described later with reference to FIG.
[0089]
After completing the distance measurement / photometry process S134, the system control circuit 50 determines the state of the image display flag stored in the internal memory of the system control circuit 50 or the memory 52 (S135), and the image display flag is set. If so, the display state of the image display unit 28 is set to the through display state (S136), and the process proceeds to S137. Note that the through display state in S136 is the same operation state as the through state in S116 (see FIG. 2).
[0090]
If the shutter switch SW2 is not pressed (S137) and the shutter switch SW1 is also released (S146), the process returns to S103.
[0091]
If the shutter switch SW2 is pressed (S137), the system control circuit 50 determines the state of the image display flag stored in the internal memory of the system control circuit 50 or the memory 52 (S138), and the image display flag is set. If so, the display state of the image display unit 28 is set to the fixed color display state (S139), and the process proceeds to S161 (see FIG. 4).
[0092]
In the fixed color display state, instead of the photographed image data written in the image display memory 24 via the image sensor 12, the A / D converter 16, the image processing circuit 20, and the memory control circuit 22, the fixed image is replaced. The color image data is displayed by the image display unit 28 via the memory control circuit 22 and the D / A converter 26, thereby displaying a fixed color image on the electronic viewfinder 28.
[0093]
If the image display flag has been canceled (S138), the process proceeds to S161.
[0094]
The system control circuit 50 captures an image in the memory 30 via the image sensor 12, A / D converter 16, image processing circuit 20, memory control circuit 22, or directly from the A / D converter via the memory control circuit 22. Using the exposure process for writing the image data and the development process for reading out the image data written in the memory 30 and performing various processes using the memory control circuit 22 and the image processing circuit 20 as necessary. (S161).
[0095]
Details of the photographing process S161 will be described later with reference to FIG.
[0096]
When the photographing process S161 is completed, the system control circuit 50 determines the state of the compression mode flag stored in the internal memory of the system control circuit 50 or the memory 52 (S162).
[0097]
<When the compression mode flag is JPEG modeGo>
If the compression mode flag is set to the JPEG mode (S162), the image data written in the memory 30 by the photographing process S161 is read and transferred to the image display memory 24 via the memory control circuit 22 Image processing is executed (S163).
[0098]
Details of the display image processing S163 will be described later with reference to FIG.
[0099]
The system control circuit 50 determines the state of the image display flag stored in the internal memory of the system control circuit 50 or the memory 52 (S164), and if the image display flag is set, performs a quick review display (S165). . In this case, the image display unit 28 is always displayed as an electronic viewfinder even during shooting, and quick review display immediately after shooting is also performed.
[0100]
If the image display flag has been released (S164), the state of the quick review flag stored in the internal memory of the system control circuit 50 or the memory 52 is determined (S165), and if the quick review flag has been set. Then, the image display of the image display unit 28 is set to the ON state (S166), and the quick review display is performed (S167).
[0101]
In this case, since the electronic viewfinder function is not required because of power saving or shooting using the optical viewfinder 104, the quick review switch can be used even when the image display of the image display unit 28 is set to OFF. If the quick review function is set according to 68, it is possible to automatically reproduce the photographed image on the image display unit 28 immediately after photographing, providing a power saving and convenient function for confirming the photographed image. It becomes possible.
[0102]
If the image display flag is released (S164) and the quick review flag is also released (S165), the process proceeds to S168 while the image display unit 28 is in the OFF state. In this case, even after shooting, the image display unit 28 remains off and no quick review display is performed. This is a usage method that places importance on power saving without using the electronic viewfinder function of the image display unit 28 without the need to check the photographed image immediately after photographing, as in the case of continuing photographing using the optical viewfinder 104. .
[0103]
The system control circuit 50 reads the captured image data written in the memory 30, performs various image processing using the memory control circuit 22 and the image processing circuit 20 as necessary, and uses the compression / decompression circuit 32. After performing the compression processing for performing the image compression processing according to the set mode (S168), the image data is transferred to the recording medium 200 or 210 such as a memory card or a compact flash card via the interface 90 or 94 and the connector 92 or 96. The recording process for writing is executed (S169).
[0104]
Details of the compression processing S168 will be described later with reference to FIG.
[0105]
When the image display unit 28 is ON, a display such as “BUSY” that clearly indicates that the writing operation is being performed while the image data is being written to the recording medium 200 or 210 is displayed on the image display unit 28. To do.
[0106]
Further, the display unit 54 also displays a recording medium writing operation display such as blinking the LED.
[0107]
After performing the recording process (S169), the process proceeds to S140 (see FIG. 3).
[0108]
<When the compression mode flag is CCD RAW modeGo>
If the compression mode flag is set to the CCD RAW mode (S162), the system control circuit 50 determines the state of the image display flag stored in the internal memory of the system control circuit 50 or the memory 52 (S170). If the image display flag is set, the display state of the image display unit 28 is set to the fixed color display state (S173), and the process proceeds to S174.
[0109]
In this case, by setting the image display unit 28 to the fixed color display state, the system control circuit 50 can perform display indicating the recording progress state in the recording process S175 described later using the image display unit 28.
[0110]
In the recording process in the CCD RAW mode, the image signal captured by the image sensor 14 can be recorded on the recording medium as it is, so that high-quality recording can be performed, but the amount of image data to be recorded increases. For this reason, displaying the recording progress state is a convenient function for the user.
[0111]
If the image display flag has been canceled (S170), the state of the quick review flag stored in the internal memory of the system control circuit 50 or the memory 52 is determined (S171), and if the quick review flag has been set. Then, the image display of the image display unit 28 is set to the ON state (S172), the display state of the image display unit 28 is set to the fixed color display state (S173), and the process proceeds to S174.
[0112]
In this case as well, by setting the image display unit 28 to the fixed color display state, the system control circuit 50 uses the image display unit 28 to display a recording progress state in a recording process S175 described later. I can do it.
[0113]
If the image display flag is released (S170) and the quick review flag is also released (S171), the process proceeds to S175 with the image display unit 28 in the OFF state. In this case, a recording process S175 described later is performed without displaying the recording progress state on the image display unit 28.
[0114]
The system control circuit 50 displays the recording progress state of the recording process S175 on the image display unit 28 (S174), and in the image capturing process S161, the image data as it is for each line according to the pixel arrangement of the color filter of the image sensor 14. The image data written in the memory 30 is read via the A / D converter 16 and the memory control circuit 22, and the memory card or compact flash card is read via the interface 90 or 94 and the connector 92 or 96. Recording is performed on the recording medium 200 or 210 such as (S175).
[0115]
When the image display unit 28 is ON, a display such as “BUSY” that clearly indicates that the writing operation is being performed while the image data is being written to the recording medium 200 or 210 is displayed on the image display unit 28. To do.
[0116]
Further, the display unit 54 also displays a recording medium writing operation display such as blinking the LED.
[0117]
This recording process S175 is executed until the recording on the recording medium 200 or 210 is completed (S176) while updating the display of the recording progress state when the image display of the image display unit 28 is ON (S174).
[0118]
When the recording process is finished (S176), the system control circuit 50 determines the state of the image display flag stored in the internal memory of the system control circuit 50 or the memory 52 (S177), and the image display flag is set. If so, the process proceeds to S179.
[0119]
If the image display flag has been canceled (S177), the state of the quick review flag stored in the internal memory of the system control circuit 50 or the memory 52 is determined (S178), and if the quick review flag has been set. The process proceeds to S179.
[0120]
If the image display flag is released (S177) and the quick review flag is also released (S178), the process proceeds to S140 (see FIG. 3) while the image display unit 28 is OFF.
[0121]
After completing the display of the recording progress state by the image display unit 28 (S179), the system control circuit 50 reads the image data as it is for each line according to the pixel arrangement of the color filter of the image sensor 14 in the photographing process S161. Then, the image data written in the memory 30 is read out via the A / D converter 16 and the memory control circuit 22, and various processes are performed using the image processing circuit 20, and an image is displayed via the memory control circuit 22. Display image processing to be transferred to the memory 24 is executed (S180), and when the image display unit 28 can reproduce the captured image by this display image processing, quick review display is performed (S181).
[0122]
Details of the display image processing S180 will be described later with reference to FIG.
[0123]
As described above, according to the present embodiment, immediately after the photographing / recording process in the CCD RAW mode is performed, it is possible to execute the display image processing and automatically reproduce the photographed image on the image display unit 28. By displaying the progress of the recording operation during the image data recording, it is possible to provide a convenient function for confirming the captured image and confirmation-related work.
[0124]
In addition, since the electronic viewfinder function is not required because the image is taken using the optical viewfinder 104 for power saving, even if the image display of the image display unit 28 is set to OFF, the quick review switch can be used for quick operation. If the review function is set, it is possible to automatically reproduce the captured image on the image display unit 28 immediately after shooting and recording, and to provide a power saving and convenient function for confirming the captured image. Is possible.
[0125]
After performing the quick review display (S181), the process proceeds to S140.
[0126]
If the series of processing in the JPEG mode (S163 to S169) or the series of processing in the CCD RAW mode (S170 to S181) has been completed and the shutter switch SW2 has been pressed (S140) (FIG. 3) The system control circuit 50 determines the state of the continuous shooting flag stored in the internal memory of the system control circuit 50 or the memory 52 (S141). If the continuous shooting flag is set, continuous shooting is performed. For this purpose, the process returns to S161 to perform the next shooting.
[0127]
If the continuous shooting flag is not set (S141), the current process is repeated until the shutter switch SW2 is released (S140).
[0128]
As described above, according to the present embodiment, in the operation setting state in which the quick review display is performed immediately after shooting, if the shutter switch SW2 is pressed when the recording processes S169 and S175 are completed, It is possible to continue the quick review display on the image display unit 28 until the shutter switch SW2 is released and carefully check the captured image.
[0129]
When a series of processes in JPEG mode (S163 to S169) or a series of processes in CCDRAW mode (S170 to S181) is completed, the shutter switch SW2 has been released or the shutter switch SW2 is pressed. If the shutter switch SW2 is released after the quick review display is continued and the captured image is confirmed (S140), the process proceeds to S143 after a predetermined minimum review time has elapsed (S142).
[0130]
As described above, according to the present embodiment, the quick review display on the image display unit 28 is continued for a predetermined time, thereby making it possible to surely check the captured image and unnecessarily the quick review. It is possible to prevent losing the next shooting opportunity by continuing the display.
[0131]
The minimum review time can be a fixed value, can be arbitrarily set by the user, or can be arbitrarily set or selected by the user within a predetermined range. You may set by the method.
[0132]
If the image display flag has been set (S143), the system control circuit 50 sets the display state of the image display unit 28 to the through display state (S144), and proceeds to S146.
[0133]
In this case, after confirming the captured image by the quick review display on the image display unit 28, it is possible to enter a through display state in which image data captured for the next imaging is sequentially displayed.
[0134]
If the image display flag has been released (S143), the image display of the image display unit 28 is set to the OFF state (S145), and the process proceeds to S146.
[0135]
In this case, after confirming the photographed image by the quick review display on the image display unit 28, the function of the image display unit 28 is stopped for power saving, and the image display unit 28 or D / A conversion with large power consumption is stopped. It is possible to reduce the power consumption of the device 26 and the like.
[0136]
If the shutter switch SW1 has been pressed (S146), the system control circuit 50 returns to S137 to prepare for the next shooting.
[0137]
If the shutter switch SW1 has been released (S146), the system control circuit 50 ends the series of shooting operations and returns to S103.
[0138]
FIG. 5 shows a detailed flowchart of the distance measurement / photometry process in S134 of FIG.
[0139]
The system control circuit 50 reads the charge signal from the image sensor 14 and sequentially reads the captured image data into the image processing circuit 20 via the A / D converter 16 (S201). Using the sequentially read image data, the image processing circuit 20 is a predetermined used for TTL (through the lens) type AE (automatic exposure) processing, EF (flash pre-flash) processing, and AF (autofocus) processing. The operation is performed.
[0140]
In each processing here, a specific portion of the total number of photographed pixels is extracted by extracting a necessary portion according to necessity and used for calculation. As a result, in the TTL method AE, EF, AWB, and AF processes, it is possible to perform an optimal calculation for each different mode such as the center weight mode, the average mode, and the evaluation mode.
[0141]
Using the calculation result in the image processing circuit 20, the system control circuit 50 performs AE control using the exposure control means 40 (S203) until it is determined that the exposure (AE) is appropriate (S202).
[0142]
Using the measurement data obtained by the AE control, the system control circuit 50 determines whether or not the flash is necessary (S204), sets the flash flag if the flash is necessary, and charges the flash 48 (S205).
[0143]
If it is determined that the exposure (AE) is appropriate (S202), the measurement data and / or the setting parameters are stored in the internal memory or the memory 52 of the system control circuit 50.
[0144]
Using the calculation result in the image processing circuit 20 and the measurement data obtained by the AE control, the system control circuit 50 uses the image processing circuit 20 to determine the color until the white balance (AWB) is determined to be appropriate (S206). The AWB control is performed by adjusting the processing parameters (S207).
[0145]
If it is determined that the white balance (AWB) is appropriate (S206), the measurement data and / or setting parameters are stored in the internal memory or the memory 52 of the system control circuit 50.
[0146]
Using the measurement data obtained by the AE control and the AWB control, the system control circuit 50 performs the AF control using the distance measurement control unit 42 until the distance measurement (AF) is determined to be in focus (S208) (S208). S209).
[0147]
If the distance measurement (AF) is determined to be in focus (S208), the measurement data and / or the setting parameters are stored in the internal memory or the memory 52 of the system control circuit 50, and the distance measurement / photometry processing routine S134 is terminated.
[0148]
FIG. 6 shows a detailed flowchart of the photographing process in S161 of FIG. The system control circuit 50 exposes the image sensor 10 by opening the shutter 12 having an aperture function according to the aperture value by the exposure control means 40 according to the photometric data stored in the internal memory of the system control circuit 50 or the memory 52. (S301, S302).
[0149]
It is determined whether or not the flash 48 is necessary based on the flash flag (S303), and if necessary, the flash is emitted (S304).
[0150]
The system control circuit 50 waits for the exposure of the image sensor 12 to end in accordance with the photometric data (S305), closes the shutter 12 (S306), reads the charge signal from the image sensor 14, reads the A / D converter 16, and the image processing circuit 20. The captured image data is written into the memory 30 via the memory control circuit 22 or directly from the A / D converter 16 via the memory control circuit 22 (S307). When the series of processing is finished, the photographing processing routine S161 is finished.
[0151]
FIG. 7 shows a detailed flowchart of the display image processing in S163 or S180 of FIG.
[0152]
If it is necessary to perform frame processing according to the set shooting mode (S401), the system control circuit 50 writes the data into the memory 30 using the memory control circuit 22 and, if necessary, the image processing circuit 20. After the image data is read and the vertical addition process (S402) and the color process (S403) are sequentially performed, the processed image data is written in the memory 30.
[0153]
The system control circuit 50 reads the image data from the memory 30 and transfers the display image data to the image display memory 24 via the memory control circuit 22 (S404).
[0154]
When the series of processing is finished, the display image processing routine S163 or S180 is finished.
[0155]
FIG. 8 shows a detailed flowchart of the compression processing in S168 of FIG.
[0156]
The system control circuit 50 reads out the captured image data written in the memory 30 using the memory control circuit 22 and, if necessary, the image processing circuit 20, and interpolates the aspect ratio of the image sensor 14 to 1: 1. After performing the square processing (S501), the processed image data is written in the memory 30.
[0157]
Then, the image data written in the memory 30 is read, and image compression processing corresponding to the set mode is performed by the compression / decompression circuit 32 (S502).
[0158]
If the image compression processing is completed, the compression processing routine S168 is terminated.
[0159]
The present embodiment has been described with reference to FIG.
[0160]
In the description of the embodiment, the types of compression modes are described as the JPEG mode and the CCD RAW mode. However, the image mode corresponding to the input display signal form in the image display unit 28 and the output signal form in the image sensor 14 are described. Other combinations are possible as long as the image mode is compatible with the above.
[0161]
Also in this case, when an image mode corresponding to the input display signal form in the image display unit 28 is selected, recording can be performed while promptly confirming reproduction of a captured image immediately after shooting. On the other hand, when the image mode corresponding to the output signal form in the image sensor 14 is selected, recording utilizing the image information of the image sensor 14 can be performed and also the captured image reproduction can be confirmed. The user can take a picture by selecting one of the above-described image modes at any time according to the situation at the photographing site and the photographing application.
[0162]
In the case where the image display unit 28 is turned off, all the elements constituting the image display unit 28 are turned off. However, there is no problem even if only some of the elements of the image display unit 28 are turned off. Even in this case, it is possible to provide a function of both confirming a captured image and saving power. For example, in the case where the image display unit 28 is composed of an LCD and a backlight, even when only the backlight is turned off while the LCD is on, the function of performing both the confirmation of the captured image and the power saving as in the embodiment Can be provided.
[0163]
Further, the image display ON / OFF switch 66 and the quick review ON / OFF switch 68 have been described as being independent from each other, but the image display ON / OFF switch 66 and the quick review ON / OFF switch 68 are combined into one common switch. Of course, there is no problem even if the image display ON / quick review only has three positions of image display ON / image display OFF.
[0164]
Then, when an instruction to end the quick review display by the image display unit 28 is given, it has been described that the elapse of the minimum review time for continuing the minimum time quick review display is determined, but of course, the minimum review time may not be set. No problem. In this case, the flowchart shown in FIG. 3 may be removed from the process for determining the elapse of the minimum review time in S142.
[0165]
In addition, as a configuration including a dedicated image display unit that performs through display and quick review display, a configuration in which ON / OFF of these display units is performed according to the settings of the image display ON / OFF switch and the quick review ON / OFF switch. It does not matter. In this case as well, as in the description of the embodiment, it is possible to provide a function for both confirming a captured image and saving power.
[0166]
In the above description, when the image display ON / OFF switch is ON, the quick review display immediately after shooting is performed regardless of the setting of the quick review ON / OFF switch. However, when the image display ON / OFF switch is ON. In addition, it may be determined whether or not to perform the quick review display according to the setting of the quick review ON / OFF switch.
[0167]
The recording media 200 and 210 are not only memory cards such as PCMCIA cards and compact flash, hard disks, etc., but also micro DAT, magneto-optical disks, optical disks such as CD-R and CD-WR, and phase change optical disks such as DVDs. Of course, there is no problem even if it is configured by the above.
[0168]
Of course, there is no problem even if the recording media 200 and 210 are composite media in which a memory card and a hard disk are integrated. Further, there is no problem even if a part of the composite medium is detachable.
[0169]
In the description of the embodiments, it has been described that the recording media 200 and 210 are separated from the image processing apparatus 100 and can be arbitrarily connected. However, any or all of the recording media are connected to the image processing apparatus 100. Of course, there is no problem even if it remains fixed.
[0170]
Further, the recording medium 200 or 210 may be connected to the image processing apparatus 100 in any number of single or plural.
[0171]
In the above description, the recording media 200 and 210 are mounted on the image processing apparatus 100. However, the recording medium may have any combination of single or plural recording media.
[0172]
【The invention's effect】
As explained above, according to the present invention,The display on the display means can be changed according to the compression method of the captured image datait can.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration of an embodiment.
FIG. 2 is a flowchart showing a main routine.
FIG. 3 is a flowchart showing a main routine.
FIG. 4 is a flowchart showing a main routine.
FIG. 5 is a flowchart showing details of distance measurement / photometry processing;
FIG. 6 is a flowchart showing details of photographing processing.
FIG. 7 is a flowchart showing details of display image processing.
FIG. 8 is a flowchart showing details of compression processing;
[Explanation of symbols]
14 Image sensor
28 Image display
50 System control circuit
200 recording media

Claims (5)

An image processing apparatus for recording and reproducing and displaying captured still images and / or moving images on a recording medium,
An imaging means, a removable recording means, a display means, and a control means ;
The control means processes the photographed image data scheduled to be recorded and displays it on the display means depending on the compression method of the photographed image data recorded on the recording medium. Separately , an image processing apparatus for determining and processing whether display image data is created and displayed on the display means . The image processing apparatus according to claim 1, wherein the difference in the compression method of the image data is a difference between JPEG and RAW. A method of controlling an image processing apparatus for recording and reproducing and displaying captured still images and / or moving images on a recording medium,
Selecting a compression method of captured image data recorded on a removable recording medium;
Depending on the selected compression method, the captured image data to be recorded is processed and displayed on the display means, or the display image data is created separately from the recorded image data and displayed on the display means. And a step of determining whether or not to process the image processing apparatus. The method for controlling an image processing apparatus according to claim 3, wherein the step of selecting the compression method is a step of selecting either JPEG or RAW. A storage medium storing a program for realizing the control method of the image processing apparatus according to claim 3 .

Images