JP2009089036A - Apparatus and image processing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus which is not difficult to view an image displayed on a display screen provided in a display device of a high resolution, and can be attempted to decrease a power consumption, and an image processing method mounted on the apparatus. <P>SOLUTION: In the case where a photographing operation is undergone to record image data of a first resolution, when it is determined that the image data are image data representing a still picture, an image based on an image of the first resolution is displayed on the display screen (step S417), and when it is determined that the image data are image data representing a continuous picture representing a time-varying image or sequence picture, the image data are converted into image data of a second resolution lower than the first resolution, to display an image based on second image data on the display screen (step S408). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a device that handles image data, and an image processing method mounted in the device.

  Conventionally, there are devices that handle image data, such as digital cameras and mobile phones with cameras. In recent years, devices such as digital cameras and camera-equipped mobile phones are equipped with high-pixel image sensors to record high-resolution still images on recording media, and display devices with high-resolution ones. When photographing, it is considered that the image recorded on the recording medium is displayed on the display screen as it is.

  In addition, in devices such as the above-described digital camera and camera-equipped mobile phone, an image can be reproduced and displayed on the display screen of the external display device by connecting to the external display device. Many of the external display devices have high resolution.

  Here, the above-described high-resolution display device has the ability to perform display at high resolution, and according to the amount of data supplied, display at high resolution, display at medium resolution, Some can display at low resolution freely.

  Here, Patent Document 1 proposes a technique for reducing the power consumption of the battery by reducing the amount of image data supplied to the display device and reducing the power consumption required for the display process at times other than shooting. Has been. However, when the technique disclosed in Patent Document 1 is adopted, image data with a large amount of data is supplied to the display device during moving image shooting or continuous shooting shooting, and the load on the data output unit that outputs the image data to the display device increases. There is a problem that power consumption increases. In addition, if the device of Patent Document 1 has an electronic zoom function, the amount of image data for display is reduced, so that an enlarged image after electronic zooming may be difficult to see because the resolution is too low. is there.

  Patent Document 2 proposes a technique for reducing the frame rate of the display device when it is determined that the load of the digital camera is overloaded. However, the technique of Patent Document 2 has a problem in that since the power consumption is reduced by reducing the frame rate, the number of frames per second is reduced and it is difficult to see the moving image on the display screen. ing.

Patent Document 3 proposes a technique for reducing power consumption by selectively switching the display mode of the electronic viewfinder to either high resolution or low resolution in accordance with the shooting scene. However, since the technique of Patent Document 3 performs processing to increase the frame rate update rate by reducing the resolution of the electronic viewfinder, the amount of data when the electronic viewfinder is set to high resolution and low resolution is almost the same. Thus, a significant power consumption reduction effect cannot be obtained.
JP 2001-257912 A JP 2003-244529 A Japanese Patent No. 2006-025008

  In view of the above circumstances, the present invention is mounted on a device capable of suppressing the difficulty of viewing an image displayed on a display screen included in a high-resolution display device and reducing power consumption. It is an object of the present invention to provide an image processing method.

In order to achieve the above object, a first device of the present invention is a device for recording image data and displaying an image based on the image data.
A data input unit for inputting image data of the first resolution;
A display data output unit for outputting image data for image display;
A recording data output unit for outputting image data for image recording;
A determination unit for determining whether the image data input from the data input unit is image data representing a still image or image data representing a continuous image;
The image data of the first resolution input from the data input unit is transmitted to the recording data output unit, and the image data input from the data input unit by the determination unit represents image data representing a still image. If it is determined that the image data of the first resolution is also transmitted to the display data output unit, the image data input from the data input by the determination unit is image data representing a continuous image. An image processing unit that converts image data input from the data input unit into image data having a second resolution lower than the first resolution and transmits the image data to the display data output unit when it is determined that the data is input; It is provided with.

  According to the first device of the present invention, the image data of the first resolution input from the data input unit to the image processing unit is determined to be image data representing a continuous image by the determination unit. In this case, image data having a second resolution lower than the first resolution is transmitted to the display data output unit.

  That is, when the image data obtained by shooting is continuous image, that is, image data representing a continuous shot image, or image data representing a moving image, the first resolution is output from the recording data output unit. The image data of the first resolution is output and the image data of the first resolution is recorded on the recording medium, the image data of the second resolution is output from the display data output unit, and the image based on the second resolution data is displayed. Displayed on the screen.

  As described above, in the high-resolution display device, when image data of the second resolution is received, display according to the data of the second resolution is performed, so that the display data is supplied from the display data output unit to the display device. As the amount of data to be reduced is reduced, the load on the display data output unit is reduced and the power consumption of the battery is reduced. In addition, since the frame rate does not change even at a second resolution lower than the first resolution, it is possible to suppress difficulty in viewing an image displayed on the display screen included in the display device.

In addition, a second device of the present invention that achieves the above-described object is a device that has a built-in battery and performs recording of image data and display of an image based on the image data by power supplied from the battery.
A data input unit for inputting image data of the first resolution;
A display data output unit for outputting image data for image display;
A recording data output unit for outputting image data for image recording;
A determination unit for determining whether or not the remaining amount of the battery is equal to or greater than a predetermined remaining amount;
When the image data of the first resolution input from the data input unit is transmitted to the recording data output unit, and the determination unit determines that the remaining amount of the battery is greater than or equal to a predetermined remaining amount Transmits the image data of the first resolution to the display data output unit, and when it is determined that the remaining amount of the battery is less than the predetermined remaining amount, the image data input from the data input unit is transmitted. And an image processing unit that converts the image data into a second resolution lower than the first resolution and transmits the image data to the display data output unit.

  According to the second device of the present invention, when the determination unit determines that the remaining amount of the battery is greater than or equal to a predetermined remaining amount, the image processing unit supplies the first display data output unit with the first data. Is transmitted to the display data output unit by the image processing unit when the remaining amount of the battery is determined to be less than a predetermined remaining amount. The image data of the resolution is transmitted.

  That is, when the remaining battery level is equal to or greater than the predetermined amount, the display data output unit outputs image data of the first resolution on the assumption that the power is sufficient, and the image data of the first resolution is displayed on the display screen. When the remaining battery level is less than a predetermined amount, an image having a second resolution lower than the first resolution is output from the display data output unit in order to suppress battery power consumption. The data is output and an image based on the second resolution image data is displayed on the display screen.

  As described above, in the high-resolution display device, when image data of the second resolution is received, display according to the data of the second resolution is performed, so the data supplied from the data output unit to the display device As the amount is reduced, the load on the display data output unit is reduced, the power consumption is reduced, and the life of the battery is extended. In addition, since the frame rate does not change even at a second resolution lower than the first resolution, it is possible to suppress difficulty in viewing an image displayed on the display screen included in the display device.

The third device of the present invention that achieves the above object has a built-in battery and can be connected to an AC adapter, and performs recording of image data and image display based on the image data by power supplied from the battery or the AC adapter. In the equipment to perform
A data input unit for inputting image data of the first resolution;
A display data output unit for outputting image data for image display;
A recording data output unit for outputting image data for image recording;
A determination unit for determining whether or not an AC adapter is connected;
The image data of the first resolution input from the data input unit is transmitted to the recording data output unit, and the display data when the determination unit determines that the AC adapter is not connected. When the image data of the first resolution is transmitted to the output unit and it is determined that the AC adapter is not connected, the image data input from the data input unit is lower than the first resolution. And an image processing unit that converts the image data into image data of the second resolution and transmits the image data to the display data output unit.

  According to the third device of the present invention, when the determination unit determines that the AC adapter is not connected, the image data of the first resolution input to the data input unit is The image processing unit converts the image data to a second resolution lower than the first resolution and transmits the image data to the display data output unit.

  That is, when the AC adapter is not connected, power is supplied from the battery. Therefore, the first resolution image data output from the recording data output unit is recorded on the recording medium, and the display is performed. An image based on the image data of the second resolution, which is output from the data output unit and whose resolution is lower than the first resolution, is displayed on the display screen included in the display device.

  As described above, in the high-resolution display device, when image data of the second resolution is received, display according to the data of the second resolution is performed. Therefore, the image transmitted from the image processing unit to the display data output unit The amount of data and the amount of image data supplied from the display data output unit to the display device have been reduced, reducing the load on the display data output unit and reducing power consumption. Will be achieved. In addition, since the frame rate does not change even at a second resolution lower than the first resolution, it is possible to suppress difficulty in viewing an image displayed on the display screen included in the display device.

In addition, the fourth device of the present invention that achieves the above object is:
In a device that records image data and displays an image based on the image data,
A data input unit for inputting image data of the first resolution;
A display data output unit for outputting image data for image display;
A recording data output unit for outputting image data for image recording;
A temperature sensor;
A determination unit that determines whether or not the temperature measured by the temperature sensor is equal to or higher than a predetermined temperature;
The image data of the first resolution input from the data input unit is transmitted to the recording data output unit, and the determination unit determines that the temperature measured by the temperature sensor is lower than a predetermined temperature. In this case, the data of the first resolution is also transmitted to the display data output unit. When it is determined that the temperature measured by the temperature sensor is equal to or higher than a predetermined temperature, the data is input from the data input unit. And an image processing unit which converts the received image data into image data having a second resolution lower than the first resolution and transmits the image data to the display data output unit.

  According to the fourth device of the present invention, when it is determined by the determination unit that the temperature measured by the temperature sensor is equal to or higher than a predetermined temperature, the data input unit has been input to the data input unit. The image data of 1 resolution is converted into image data of a second resolution whose resolution is lower than the first resolution by the image processing unit and is transmitted to the display data output unit.

  That is, when the temperature is equal to or higher than the predetermined temperature and the battery load is heavy, the first resolution image data output from the recording data output unit is recorded on the recording medium, and the display data output unit The output image based on the image data of the second resolution whose resolution is lower than the first resolution is displayed on the display screen included in the display device.

  As described above, in the high-resolution display device, when image data of the second resolution is received, display according to the data of the second resolution is performed, so that the display data is supplied from the display data output unit to the display device. As the amount of data is reduced, the load on the data output unit is reduced, power consumption is reduced, and the battery life is extended. In addition, since the frame rate does not change even at a second resolution lower than the first resolution, it is possible to suppress difficulty in viewing an image displayed on the display screen included in the display device.

The fifth device of the present invention that achieves the above object is as follows.
In a device that displays an image based on image data on an external display device,
A data input unit for inputting image data of the first resolution;
A data output unit for outputting image data;
A recognition unit that recognizes a resolution that can be received by the display device of the output destination;
When the first resolution matches the recognizable resolution recognized by the recognition unit, the image data input from the data input unit is directly transmitted to the image data output unit. ,
When the first resolution is a resolution that is recognized by the recognition unit and does not match a resolution that can be received by the display device, the display device receives image data input from the data input. An image processing unit is provided that converts the image data to the second resolution closest to the first resolution among the possible resolutions and transmits the image data to the data output unit.

  According to the fifth device of the present invention, when the recognizing unit recognizes that the receivable resolution on the external display device does not match the first resolution, the data input unit The first resolution image data input to the image processing unit is converted into second resolution image data lower than the first resolution and output.

  That is, when the recognizing unit recognizes that the receivable resolution on the external display device does not match the first resolution, the first of the resolutions receivable by the external display device. The image data is converted to image data having a second resolution close to the image resolution and output from the data output unit, and an image based on the image data having the second resolution is displayed on a display screen provided in an external display device. As a result, since the amount of data supplied from the data output unit to the external display device is reduced, the load on the data output unit is reduced, power consumption is reduced, and the battery life is extended. Become. In addition, since the frame rate is not converted to a resolution that can be received by an external display device, it is possible to prevent an image displayed on the display screen included in the display device from being difficult to see.

The sixth device of the present invention that achieves the above object is as follows.
In devices that display images based on image data,
A data input unit for inputting image data of the first resolution;
A data output unit for outputting image data for display;
An instruction unit for instructing whether or not to cut out image data representing an image of only a partial region of the image represented by the image data from the image data input from the data input unit;
If the image data input from the data input unit is not instructed to cut out image data representing an image of only a partial area by the instruction unit, the second resolution lower than the first resolution is used. When the image data representing the partial area image is instructed to be cut out by the instruction section, the image data representing the partial area image is cut out and cut out. And an image processing unit that converts the image data to the data output unit after converting the image data to the third resolution higher than the second resolution or the first resolution. .

  According to the sixth device of the present invention, when the instruction unit does not instruct to cut out image data representing an image of only a partial area of the image represented by the image data, An image is displayed on the display screen after being converted to a second resolution lower than the resolution of the image, and the instruction unit instructs to cut out image data representing only a partial area of the image represented by the image data. If the image data representing the image of the partial region is cut out, the cut-out image data is converted into the first resolution or the third resolution higher than the second resolution. The image is output to the output unit and displayed on the display screen at a resolution higher than the second resolution.

  That is, when the instruction unit instructs to cut out image data representing only a partial area of the image represented by the image data, and the electronic zoom is performed, the first resolution is maintained or the second resolution is maintained. It is converted to a third resolution higher than the first resolution and output to the data output unit, and an image having a higher resolution than the second resolution is displayed on the display screen. For this reason, an enlarged image that has been electronically zoomed is displayed at a high resolution. Further, when electronic zooming is performed, only a partial area of the image becomes image data, and the amount of image data is reduced. Therefore, power consumption can be reduced even if the resolution is increased.

The first image processing method of the present invention that achieves the above object provides:
Determining whether the input image data is image data representing a still image or image data representing a continuous image;
Outputting the input image data for recording;
If the input image data is determined to be image data representing a still image, outputting the image data for display;
When it is determined that the input image data is image data representing a continuous image, the image data is converted into image data having a second resolution lower than the first resolution that is the resolution of the image data. And outputting for display.

The second image processing method of the present invention that achieves the above-described object is as follows.
Determining whether the remaining battery level is greater than or equal to a predetermined remaining level;
Outputting the input first resolution image data for recording;
When it is determined that the remaining battery level is equal to or greater than the predetermined remaining level, the image data is output for display, and when it is determined that the remaining battery level is less than the predetermined remaining level, Converting the image data into image data having a second resolution lower than the first resolution, which is the resolution of the image data, and outputting the image data for display.

The third image processing method of the present invention that achieves the above object is
Determining whether an AC adapter is connected;
Outputting the input image data for recording;
If it is determined that the AC adapter is connected, the image data is output for display. If it is determined that the AC adapter is not connected, the image data is displayed at the resolution of the image data. Converting the image data to a second resolution lower than a certain first resolution and outputting the image data for display.

The fourth image processing method of the present invention that achieves the above object is
Measuring the temperature and determining whether the measured temperature is equal to or higher than a predetermined temperature;
Outputting the input image data for recording;
When it is determined that the measured temperature is lower than the predetermined temperature, the image data is output for display, and when it is determined that the measured temperature is equal to or higher than the predetermined temperature, the image data is output. Is converted into image data having a second resolution lower than the first resolution, which is the resolution of the image data, and output for display.

The fifth image processing method of the present invention that achieves the above object is
Recognizing receivable resolution on the display device of the output destination;
When the resolution of the input image data matches the receivable resolution at the display device, the step of outputting the input image data as it is to the display device;
When the resolution of the input image data is a resolution that does not match the receivable resolution in the display device, the input image data is the resolution that can be received by the display device, Converting the image data to the second resolution image data closest to the first resolution, which is the resolution of the image data, and outputting the image data to the display device.

Further, from the input image data, an instruction is received as to whether or not to cut out image data representing an image of only a partial area of the image represented by the image data,
When the extraction of image data representing an image of only a partial area is not instructed, the input image data is converted to a second resolution lower than the first resolution that is the resolution of the image data. The image data representing the image of only the partial area is instructed, and the image data representing the image of the partial area is cut out and the image data is kept in the first resolution, Alternatively, the method includes a step of converting and outputting an image having a third resolution higher than the second resolution.

  As described above, it is possible to prevent an image displayed on a display screen included in a high-resolution display device from being difficult to see and reduce power consumption, and image processing mounted on the device. The method is realized.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is an external perspective view of a digital camera, which is a first embodiment of a photographing apparatus of the present invention, seen obliquely from the front top.

  A digital camera 100 shown in FIG. 1 captures subject light and generates image data. On the front surface of the digital camera 100, a zoom lens barrel 111 including an optical zoom lens is flashed in synchronization with photographing. A flash light emission window 112 for emitting light, an AF auxiliary light lamp 113 for improving autofocus (AF) accuracy at low contrast such as in a dark place, and the like are provided.

  On the top surface of the digital camera 100, a power switch 114, a release button 115, and a rotary mode dial 116 are provided around the release button 115. The mode dial 116 can be switched alternately between the still image mode and the moving image mode by turning the dial. Note that the release button 115 of the present embodiment has two operation modes of half-press and full-press.

  FIG. 2 is an external view showing the back of the digital camera shown in FIG.

  On the back of the digital camera 100 shown in FIG. 2, there are an LCD panel 117A, a viewfinder 124, a MENU / OK button 118, a DISP / BACK button 119, a photo mode button 120, a playback button 121, a cross button 122, a zoom button 123, and the like. Is provided.

  The LCD panel 117A displays an image composed of image data generated by capturing subject light with a photographing lens and information at various settings. In this example, a high resolution LCD is used for the LCD having the LCD panel 117A.

  The MENU / OK button 118 is a button for displaying various menus at the time of shooting or reproduction on the LCD panel 117A, or selecting and determining a desired menu from the displayed menus.

  The DISP / BACK button 119 is a button for switching the state of the screen displayed on the LCD panel 117A, returning the operation by the MENU / OK button 118 or the like to the previous state, or canceling the operation.

  The photo mode button 120 is a button for setting the number of pixels, sensitivity, color, number of prints, and the like.

  The reproduction button 121 is a button for reproducing and displaying a captured image recorded on a recording medium 1059 described later on the LCD 117A.

  The role of the cross button 122 changes in various modes. For example, the cross button 122 is a macro button or a flash button in the still image mode, and a thumbnail selection button displayed on the LCD panel 117A in the playback mode. The macro button is a button for switching whether or not to perform macro shooting. When the macro button is pressed once, the macro shooting mode is set, and when pressed again, the macro shooting mode is canceled. The flash button is a button for sequentially switching the flash state, such as auto flash, red-eye reduction flash, forced flash, flash prohibition, slow shutter flash, and auto flash each time the button is pressed.

  The zoom button 123 is a button for zooming in on the telephoto side (tele side) by pressing down to the right and zooming out on the wide angle side (wide side) by pressing down on the left side.

  Next, the circuit configuration of the digital camera 100 shown in FIGS. 1 and 2 will be described.

  FIG. 3 is a block diagram illustrating a circuit configuration of the digital camera 100 illustrated in FIGS. 1 and 2. The digital camera 100 operates by receiving power supply from the battery BT.

  The operation of the digital camera 100 is comprehensively controlled by the CPU 130. Since various operation signals are supplied to the CPU 130 when at least one of the release button and various switches on the back side is operated, the CPU 130 performs processing according to the supplied operation signal in the EEPROM 130A. Execute as appropriate according to the program. 3 includes the MENU / OK button 118, the DISP / BACK button 119, the photo mode button 120, the play button 121, the cross button 122, the zoom button 123, the release button 114, and the like shown in FIG. An operation panel OP is described.

  Also, FIG. 3 shows two buses, an address bus 130B and a data bus 130C. Using the address bus 130B of the two buses, the CPU 130 accesses the memories such as the EEPROM 130A and the SDRAM 132, and accesses the circuits 133 to 135 and 139 to 142. Further, the instruction contents from the CPU 130 are notified to the circuits 131, 133 to 135, and 139 to 142 via the data bus 130C of the two buses 130B and 130C, and conversely, the circuits 131, 133 to 135 are notified. , 139 to 143 notify the CPU 130 of the progress of processes in each circuit.

  Further, a memory control circuit 131 is provided to match the processing timing of the ADC 138 and the bus side, and digital image data output from the ADC 138 by the memory control circuit 131 based on an instruction from the CPU 130 is the data bus 130C. It is the composition which is led to the top. In the present embodiment, the CPU 130 and the memory control circuit 131 constitute an example of the data input unit referred to in the present invention.

  Here, the configuration and operation of the digital camera 100 that is comprehensively controlled by the CPU 130 will be described with reference to FIG.

  In the photographing optical system 1110 shown in the upper left of FIG. 3, a photographing lens 1111 and a diaphragm 1112 are provided. FIG. 3 also shows that other optical components such as a mechanical shutter are provided in the photographing optical system 1110.

  The taking lens 1111 includes a zoom lens and a focus lens. These lenses are driven by a lens driving unit 1301 to move in the optical axis direction, and the operation of the lens driving unit 1301 is controlled by the CPU 130. The diaphragm 1112 is driven by the diaphragm driving unit 1302, and the operation of the diaphragm driving unit 1302 is also controlled by the CPU 130. Further, the image sensor 136 is driven by the image sensor drive unit 1303, and the operation of the image sensor drive unit 1303 is also controlled by the CPU 130. Image data is generated by the image sensor 136 in accordance with the driving by the image sensor driving unit 1303 and is output to the analog signal processing circuit 137 at the subsequent stage.

  In the analog signal processing circuit 137, noise reduction processing or the like of the image data output from the image sensor 136 is performed, and the image data subjected to the noise reduction processing is supplied to an ADC (Analog Digital Converter) 138 at the subsequent stage. The ADC 138 converts analog image data into digital image data.

  After the analog image data is converted into digital image data by the ADC 138, the image data for one frame is sequentially sent onto the data bus 130 </ b> C by the memory control circuit 131 under the control of the CPU 130, and the image data is transferred to the SDRAM. Is temporarily stored. Thereafter, image data is read from the SDRAM 132 by the image processing unit IP. The image processing unit IP is constituted by a processor and is shown in FIG. 3 as being connected by a bus. However, the digital signal processing circuit 133, the integration circuit 135, the compression / expansion circuit 139, and the resizing circuit RS are shown in FIG. Are configured in the same processor.

  Here, the flow of processing of the through image data for displaying on the liquid crystal panel 117A (see FIG. 2) of the LCD 117 which is a display device will be described first when the power is turned on. .

  When displaying the through image on the LCD panel 117 </ b> A included in the LCD 117, the CPU 130 instructs the image sensor driving unit 1303 to repeatedly drive the image sensor 136 at a predetermined timing to cause the analog signal processing circuit 137 to store the inside of the image sensor. The image data in which a predetermined number of pixels are thinned out are output one after another, and further, the through image data converted into digital image data by the ADC 138 is instructed to the memory control circuit 131 and sequentially applied to the data bus 130C. Let me guide you.

  The through image data guided onto the data bus 130C by the memory control circuit 131 is temporarily stored in the SDRAM 132 via the data bus 130C. The through image data stored in the SDRAM 132 is read by the image processing unit IP and is first supplied to the digital signal processing circuit 133.

  In the digital signal circuit 133, YC conversion processing is performed after shading correction or the like is performed on the live view image data. By performing the YC conversion process, a YC signal is generated from the through image data, and the generated YC signal is temporarily supplied to the SDRAM 132 and stored therein. When the YC signal for one frame is stored in the SDRAM 132, this time, the YC signal is read from the SDRAM 132 by the memory transfer command of the CPU 130, supplied to the built-in display control circuit 134, and converted to the YC signal on the LCD panel 117A included in the LCD 117. A live view based on it is displayed.

  In addition, when displaying the through image, the integrating circuit 135 constantly performs in-focus position detection processing or photometry processing. In response to the integration result in the integration circuit 135, the CPU 130 instructs the lens driving unit 1301 to move the focus lens 1111 to the in-focus position, or instructs the aperture driving unit 1302 to change the aperture diameter. Yes. Therefore, a through image based on the through image data adjusted to the appropriate exposure is displayed on the LCD panel 117A at any time. In the present embodiment, the CPU 130 and the SDRAM 132 constitute an example of the display data output unit referred to in the present invention.

  The above is the through image display processing.

  Here, when the photographer presses the release button 115 by referring to the through image on the LCD panel 117A, the CPU 130 receives the pressing operation of the release button 115 and starts shooting processing.

  The CPU 130 opens a mechanical shutter (not shown) to a driving unit (not shown) and instructs the image sensor driving unit 1303 to set the electronic shutter to the image sensor 136 and start exposure. After a predetermined shutter time, the electronic shutter and further the mechanical shutter are closed to output image data. The image data output from the image sensor 136 is reduced in noise by the analog signal processing circuit 137 and converted into digital image data by the ADC 138.

  The digital image data output from the ADC 138 is guided to the data bus 130C by the memory control circuit 131 under the control of the CPU 130, and the image data guided to the data bus 130C is once supplied to the SDRAM 132 and stored therein. . After all the image data generated by the image sensor 136 is supplied and stored in the SDRAM 132, the image data is read from the SDRAM 132 by the image processing unit IP. The read image data is supplied to a digital signal processing circuit 133 in the image processing unit IP. The digital signal processing circuit 133 performs shading correction, and then converts the YC signal into a compression / expansion circuit 139. The supplied YC signal is compressed by the compression / decompression circuit and temporarily stored in the SDRAM 132. Then, image data is supplied to the external media control circuit 140 in response to a memory transfer command from the CPU 130, and shooting information from the compression / decompression circuit 139, information related to compression, and information related to the compression are sent from the CPU 130 to the external media control circuit 140. 140, the external media control circuit 140 adds information related to compression and shooting information to the compressed YC signal as a header, and the image file is recorded on the recording medium 143. At this time, the compression processing of the image data is performed with the first resolution, the data amount of the recording image data is reduced and stored in the SDRAM 132, and the image data is externally transmitted from the SDRAM 132 via the data bus 130C. The data is supplied to the media control circuit 140 and recorded on the recording medium 143. That is, in the present embodiment, an example of the recording data output unit referred to in the present invention is constituted by the CPU 130, the SDRAM 132, and the external media control circuit 140.

  This reduces the amount of data even during recording, thereby reducing the load on the CPU 130, SDRAM 132, and external media control circuit 140 that constitute the data output unit, and reducing the power consumption of the battery BT. Become.

  The process so far is the recording process of the main image.

  Here, when a moving image is being shot, all pixels are read out from the image sensor 136 and image data of the first resolution is successively stored in the SDRAM 132 which is a work area, and the digital signal processing circuit 133 An image processing unit IP including an integration circuit 135, a compression / expansion circuit 139, and a resizing circuit RS reads out image data in the SDRAM 132, performs image processing, and temporarily stores it in an internal frame memory or the like. When instructed, the compressed moving image data is stored in the SDRAM 132. Thereafter, the moving image data in the SDRAM 132 is transferred to the external media control circuit 140 under the control of the CPU 130, and the image file is recorded on the recording medium 143. At this time, since the compressed image file is transferred to the external media control circuit 140, the load on the bus 130C and the external media control circuit 140 is reduced, and the power consumption of the battery is reduced. In addition, when continuous shooting is performed, the same processing as that of the moving image is performed.

  By the way, in patent document 1, since it is the structure by which the image data of 1st resolution is supplied to a display apparatus, when the moving image photography or continuous shooting photography in which image data becomes a continuous image is performed, the power consumption of battery BT There has been a problem of increasing the number of people.

  Therefore, in this embodiment, when the CPU 130 determines that the image data input from the ADC 138 under the control of the memory control circuit 131 is continuous image data such as moving image data or continuous shooting data, the CPU 130. Stores the image data in the SDRAM 132 after setting the reduction coefficient in the resizing circuit RS in the image processing unit IP and causing the resizing circuit RS to convert the resolution from the first resolution to the second resolution. Also for display, the load of the CPU 130 (around the bus) and the built-in display control circuit 134 can be reduced by reducing the amount of image data during memory transfer.

  With this configuration, the amount of image data supplied to the internal media control circuit 140 via the bus 130C and the amount of image data supplied to the built-in display control circuit 134 via the bus 130C at the time of moving image shooting or continuous shooting shooting. The amount is reduced, the load on the CPU 130 and the built-in display control circuit 134 is reduced, and the power consumption of the battery BT can be reduced.

  Here, photographing processing performed by the image processing unit IP including the CPU 130, the digital signal processing circuit 133, the integration circuit 135, the compression / expansion circuit 139, and the resizing circuit RS included in the digital camera 100 of the present embodiment will be described.

  FIG. 4 is a diagram illustrating a procedure of photographing processing performed by the CPU 130 and the image processing unit IP.

  In step S401, the CPU 130 supplies the live view data in the SDRAM 132 to the built-in display control circuit 134 via the bus 130C to display the live view on the LCD panel 117A (see FIG. 2) of the display device. At this time, the image is read out from the image sensor 136, the image data is supplied to the built-in display control circuit 134 at a second resolution lower than the first resolution, and the image based on the image data is supplied to the built-in display control circuit 134. Is displayed on the LCD panel. In response to the release button being pressed when the through image is displayed in step S402, the CPU 130 determines in step S403 whether the shooting is a moving image shooting or continuous shooting shooting, which is a continuous image, or a still image shooting. Do it first. When the CPU 130 determines that the image is a continuous image in step S403, the process proceeds to the continuous image. In step S404, a reduction coefficient is set in the resize circuit RS in the image processing unit IP in order to reduce the battery load. Proceeding to the next step, in step S405, the CPU 130 receives the exposure value and the focus value from the integrating circuit 135 in the image processing unit IP and performs exposure adjustment and focus adjustment. The first resolution image data is output from the image sensor and temporarily stored in the SDRAM 132 under the control of the memory control circuit. In the next step S407, the image processing unit IP reads out the image data in the SDRAM 132, performs image processing such as YC processing and stores it in the internal frame memory for recording data creation, and the resizing circuit RS performs the first resolution. Is converted to the second resolution, and the image data of the second resolution is stored in the SDRAM 132 again.

  In the next step S408, the CPU 130 outputs (memory transfers) the second resolution image data stored in the SDRAM 132 to the built-in display control circuit 134 via the bus 130C, and outputs the LCD 117 to the built-in display control circuit 134. Is controlled to display a moving image or continuous shot image based on the second image data on the LCD panel.

  When an instruction to end shooting is issued in the next step S409, image data obtained by compressing the moving image data or continuous shot data in the frame memory in the image processing unit by the compression / decompression circuit 139 in the image processing unit IP in step S410. Is stored in the SDRAM 132. In the next step S411, the CPU 130 outputs (memory transfers) the image data in the SDRAM 132 to the external media control circuit 140, and causes the external media control circuit to record the image file on the recording medium 143. If it is determined in step S412 that shooting is continued without switching to the playback mode or the power switch is turned off, the process returns to step S401 to repeat the processing from step S401, and if it is determined that the power switch or the like is turned off. Finish the flow process.

  If it is determined in step S403 that the image is still image shooting, the process proceeds to the still image. In step S413, exposure and focus adjustment are performed in the same manner as in step 405, and the subject imaged on the image sensor in step S414. Is generated and output, and the output image data is instructed to the memory control circuit 131 to be guided to the bus 130C and temporarily stored in the SDRAM 132. In the next step S415, the image is output (memory transfer) to the built-in display control circuit and an image based on the first image data is displayed on the LCD panel. In the next step S416, the image processing unit IP receives the process start signal from the CPU 130, reads the image data in the SDRAM 132, performs the image processing up to the compression processing by the compression / decompression circuit, and in step S417 again stores the compressed image data in the SDRAM 132. Remember. In the next step S418, the CPU 130 receives the compressed data stored in the SDRAM 132 and outputs (memory transfers) the compressed data to the external media control circuit 140 and supplies the compressed information to the external media control circuit. An image file having data is recorded on a recording medium. If it proceeds to step S412, and it is determined that shooting is continued without switching to the playback mode or the power switch is turned off, the process returns to step S401 and the processing from step S401 is repeated to determine that the power switch or the like is turned off. Then, the process of this flow is terminated.

  With the above configuration, when moving image shooting or continuous shooting is performed, image data whose data amount is reduced by the resizing circuit RS being converted from the first resolution to the second resolution is built in via the bus. Since the power is supplied to the display control circuit 134, the load on the portion that drives the bus 132 and the data receiving portion of the built-in display control circuit 134 is reduced compared to the conventional case, and the power consumption of the battery is reduced.

  In the above-described embodiment, it is determined whether the image is a still image or a continuous image, and the resolution of the image data for display is lower than the first resolution in the case of a moving image or a continuous shot image that is a continuous image. When the image data for display during movie shooting or continuous shooting is kept at the first resolution, a clear image is displayed on the LCD panel, and the remaining battery level becomes less than the predetermined resolution. The first resolution is converted into a second resolution lower than the first resolution and supplied to the built-in display control circuit, so that the load on the bus driving part and the built-in display control circuit is reduced to reduce the battery length. The life may be extended.

  FIG. 5 is a diagram for explaining an example in a case where the resolution of the display image is reduced to extend the battery life when the remaining amount of the battery becomes less than the predetermined remaining amount.

  The configuration is the same as that of FIG. 3 except that a power supply circuit PS including a remaining battery level detection circuit DET is added.

  The power from the battery BT is supplied to the power supply circuit PS of FIG. 5, and the power is supplied to each part from the power supply circuit PS. The CPU 130 determines that the remaining amount of the battery BT is less than a predetermined value based on the detection result of the remaining battery level detection circuit DET in the power supply circuit PS, and determines that the remaining amount is less than the predetermined amount. Set the reduction factor for resolution.

  FIG. 6 is a flowchart for explaining a procedure of processing executed by the CPU 130.

  The process of step S404 is the same as the process of FIG. 5 except that the process from step S420 to step S423 is added to the determination step S404A.

  When it is determined in step S404A that the remaining amount of the battery is less than the predetermined amount, a series of processing from step S405 to step S411 is performed to display an image based on the image data of the second resolution on the LCD panel. If it is determined as above, the image based on the image data of the first resolution is displayed on the LCD panel as it is without being resized in the processing from step S420 to step S423.

  With this configuration, when the battery capacity is sufficient, an image based on the image data of the first resolution is displayed, and when the battery is exhausted, the resolution is higher than the first resolution in order to keep the battery at that time as long as possible. Is converted to a lower second resolution, and an image based on the second resolution is displayed on the LCD panel. Even with this configuration, the power consumption of the battery can be reduced.

  Many digital cameras are equipped with an AC adapter. When this AC adapter is connected, the battery power is not used, so there is no need to bother converting to the second resolution lower than the first resolution.

  FIG. 7 is a diagram illustrating an internal configuration when an adapter detection circuit ACD for determining whether or not an AC adapter is connected to the digital camera of FIG. 1 is provided.

  FIG. 8 is a flowchart for explaining the photographing process when the AC adapter is connected and when the AC adapter is not connected.

  The processing content of step S404A in FIG. 6 is the same as the processing in FIG. 6 except that the processing content is changed to step S404B and whether or not the AC adapter is connected.

  When the CPU determines that the AC adapter is not connected based on the detection result of the AC adapter detection circuit ADC, the process proceeds to No in step S404B, and the processing from step S405 to step S411 is performed as in the processing of FIG. If it is determined in step S404B that the AC adapter is connected based on the detection result of the AC adapter detection circuit ADC, the process proceeds to Yes and AC power is being supplied. Since there is enough power, an image based on the image data of the first resolution is displayed on the LCD panel. This is fine.

  Here, in the above-described embodiment, an example in which the battery remaining amount detecting means DET is provided to detect the battery consumption state is shown, but the battery load state can be understood to some extent even if the temperature rise is detected.

  FIG. 9 is a diagram showing an internal configuration when a thermometer is provided in the digital camera of FIGS. 1 and 2.

  FIG. 10 is a flowchart for explaining a photographing process when the thermometer TH is provided to detect the load of the battery.

  The process is the same as that in FIG. 6 except that the process in step S404A in FIG. 6 is changed to step S404C. This is fine.

  FIG. 11 is a diagram illustrating a display configuration when the external display device 200 is connected to the digital camera of FIG. 1 and a reproduced image is displayed on the external display device 200. FIG. It is a figure which shows the internal structure of a camera. Further, FIG. 13 is a flowchart showing a processing procedure of image processing performed by the CPU 130 and the image processing unit IP of FIG. The external display device 200 can display an image with a resolution in a predetermined range from a low resolution to a high resolution.

  When the external display device 200 shown in FIG. 11 is connected to the digital camera shown in FIG. 1, the CPU of the digital camera receives the external display device 200 when displaying the reproduced image on the display screen of the external display device 200. In order to recognize possible resolutions, an inquiry is made to the external display device 200 through the external display control circuit 191, and the CPU 130 performs image processing so as to match the resolution recognized and recognized by the external display device 200. The image data is supplied to the external display device 200 through the external display control circuit 191 after the resolution is converted by the resize circuit RS in the part IP.

  FIG. 13 is a diagram for explaining processing performed by the CPU 130 and the image processing unit IP included in the digital camera in the configurations of FIGS. 11 and 12.

  In step S1301, the CPU 130 reads one of the reproduced images in the recording medium. In step S1302, the resolution of the reproduced image is confirmed, and in step S1303, the external display device 200 is inquired about a receivable resolution. In next step S1304, it is determined whether or not the resolution of the reproduced image is a receivable resolution. If it is determined in step S1304 that the reproduction size is smaller than the receivable size, the reproduction size <receivable size side is advanced. In step S1305, the resized image data is resized to a resolution that can be received by the resize circuit RS, and the resized image data is transmitted to the external display device 200 through the external display control circuit 191, and the processing of this flow ends.

  If it is determined in step S1304 that the resolution of the reproduced image is a receivable resolution, the process proceeds to step S1306, and the image data is transmitted as it is through the external display control circuit 191 in step S1306. If it is determined that the resolution is larger than the receivable resolution, the playback size> receivable size side is advanced, and in step S1307, the resolution of the playback image is resized to a resolution that can be received by the resizing circuit RS and the resized image data is externally displayed The process is transmitted to the external display device 200 through the control circuit 191 and the processing of this flow is finished.

  When the CPU 130 and the image processing unit IP execute the processing of the flow of FIG. 13, the external resizing circuit RS is instructed to perform resolution conversion and external display control is performed for image data having a second resolution lower than the first resolution. Since it can be supplied to the external display device 200 through the circuit 191, the power consumption of the battery in the digital camera is reduced by reducing the load on the CPU 130 (around the bus) and the external display control circuit 191 in the digital camera. It becomes possible.

  FIG. 14 is a diagram for explaining a state on the LCD panel when electronic zooming is performed. FIG. 15 is a processing procedure when the CPU 130 included in the digital camera shown in FIGS. 1, 2, and 3 performs electronic zoom processing. It is a flowchart which shows.

  As shown in FIG. 14, the through image has thinned out the number of pixels output from the image sensor, but normally the subject is displayed to be small to some extent, so that it looks beautiful to some extent. However, since the resolution is low when the electronic zoom is performed, an enlarged image that is difficult to see is displayed on the LCD panel.

  Therefore, when an image of a partial area of the image is cut out and electronically zoomed, the SDRAM 132 is set after the resolution of the image data of the cut out area is set to a high resolution by the resizing circuit RS in consideration of a reduction in the amount of image data. And output (memory transfer) to the built-in display control circuit 134. FIG. 14 shows that the lower right (SD) is displayed in the upper right when it was electronically zoomed, but it has been changed to display in the high resolution (HD) as shown in the lower right. Has been.

  FIG. 15 is a flowchart for explaining processing during electronic zooming performed by CPU 130.

  In step S1501, the CPU 130 displays an image based on low resolution, that is, image data of the second resolution (SD), or high resolution, that is, an image based on the image data of the first resolution (HD). Select whether to display. For example, when displaying a through image, the process proceeds to the SD side, and in step S1502, the display device displays an image at a low resolution (SD) based on the image data of the second resolution. In the next step S1503, it is determined whether or not an electronic zoom has been performed by a user operation and an instruction to cut out an image of a partial area in the through image has been issued. If it is determined in step S1503 that the electronic zoom has been performed, the process proceeds to the Yes side, and the image processing unit reads the image data of the partial area from the SDRAM 132, and sets the resolution of the image data of the partial area to the second resolution by the resizing circuit. The first resolution, which is higher than the first resolution, is stored in the SDRAM 132, output to the built-in display control circuit 134 (memory transfer), and the image is displayed at high resolution (HD) based on the first resolution. Make it. In step S1505, it is determined whether the undo process has been performed. If it is determined that the undo process has been performed, the process proceeds to step S1506 to display an image at a low resolution (SD) based on the second resolution. To end the processing of this flow.

  When displaying a captured image of still image shooting in step S1501, the process proceeds to the HD side, and in step S1507, the display device displays an image in high resolution (HD) based on the image data of the first resolution. If it is determined in step S1508 that high-speed continuous shooting (or moving image) shooting has been started by a user operation, the process proceeds to the Yes side and image data having a second resolution lower than the first resolution is stored in the built-in display control circuit 134. When it is determined that the high-speed continuous shooting (or moving image) has been stopped in step S1510, the process proceeds to Yes, and the first resolution is sent to the built-in display control circuit 134. Then, the display form of the LCD is returned to the high resolution display, and the processing of this flow is finished. If it is determined in step S1510 that high-speed continuous shooting (or moving image shooting) is continued, the process returns to step S1509 and the process of step S1509 is repeated.

  If it is determined in step S1508 that high-speed continuous shooting (or moving image shooting) has not been performed, steps S1509 and S1510 are skipped, and the high-resolution display is left in step S1511, and the processing of this flow ends.

  If there is an electronic zoom function, the enlarged image that has been electronically zoomed is displayed neatly when the above processing is performed. In addition, since a part of the area is electronically zoomed, the amount of image data can be reduced, so that the amount of processing can be reduced even in the first resolution, and the power consumption can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external perspective view of a digital camera that is a first embodiment of a photographing apparatus according to the present invention when viewed obliquely from the front top. It is an external view which shows the back surface of the digital camera shown in FIG. FIG. 3 is a block diagram illustrating a circuit configuration of the digital camera 100 illustrated in FIGS. 1 and 2. It is a figure which shows the procedure of the imaging | photography process which CPU130 and an image process part perform. It is a figure explaining the example at the time of setting it as the structure which reduces the resolution of a display image when the remaining amount of a battery is less than a predetermined remaining amount, and aims at lifetime extension of a battery. It is a flowchart explaining the procedure of the process which CPU130 performs. It is a figure which shows an internal structure in case the adapter detection circuit ACD for determining whether the AC adapter is connected to the digital camera of FIG. 1 is arrange | positioned. 5 is a flowchart for describing photographing processing when an AC adapter is connected and when an AC adapter is not connected. It is a figure which shows an internal structure at the time of providing the thermometer in the digital camera of FIG. 1, FIG. It is a flowchart explaining the imaging | photography process at the time of providing the said thermometer TH in order to detect the load of a battery. FIG. 2 is a diagram illustrating a display configuration when an external display device is connected to the digital camera of FIG. 1 and a reproduced image is displayed on the display device. It is a figure which shows the internal structure of the digital camera of FIG. 13 is a flowchart illustrating a processing procedure of image processing performed by a CPU and an image processing unit IP in FIG. It is a figure explaining the state on the LCD panel when electronic zooming is carried out. 4 is a flowchart showing a processing procedure when a CPU 130 included in the digital camera shown in FIGS. 1, 2, and 3 performs an electronic zoom process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Digital camera 1110 Shooting optical system 1111 Shooting lens 1112 Aperture 111 Zoom lens barrel 112 Flash emission window 113 AF auxiliary light lamp 114 Power switch 115 Release button 116 Mode dial 117 LCD
117A LCD panel 118 MENU / OK button 119 DISP / BACK button 120 Photo mode button 121 Playback button 122 Cross button 123 Zoom button 124 Viewfinder 130 CPU
130A EEPROM
130B Address bus 130C Data bus 1301 Lens drive unit 1302 Aperture drive unit 1303 Image sensor drive unit 131 Memory control circuit 132 SDRAM
133 Digital signal processing circuit 134 Built-in display control circuit 135 Integration circuit 136 Image sensor 137 Analog signal processing circuit 138 ADC
139 Compression / decompression circuit 140 External media control circuit 143 Recording medium 191 External display circuit 200 External display device IP image processing unit RS resizing circuit PS power supply circuit DET Battery remaining amount detection circuit ACD AC adapter detection circuit TH thermometer

Claims (12)

In a device that records image data and displays an image based on the image data,
A data input unit for inputting image data of the first resolution;
A display data output unit for outputting image data for image display;
A recording data output unit for outputting image data for image recording;
A determination unit for determining whether the image data input from the data input unit is image data representing a still image or image data representing a continuous image;
The image data of the first resolution input from the data input unit is transmitted to the recording data output unit, and the image data input from the data input unit by the determination unit represents image data. If it is determined that the image data of the first resolution is transmitted to the display data output unit, the image data input from the data input unit by the determination unit represents image data representing a continuous image. An image processing unit that converts the image data input from the data input unit into image data having a second resolution lower than the first resolution and transmits the image data to the display data output unit. A device characterized by comprising In a device that incorporates a battery and performs recording of image data and display of an image based on the image data by power supplied from the battery,
A data input unit for inputting image data of the first resolution;
A display data output unit for outputting image data for image display;
A recording data output unit for outputting image data for image recording;
A determination unit for determining whether or not the remaining amount of the battery is equal to or greater than a predetermined remaining amount;
When the image data of the first resolution input from the data input unit is transmitted to the recording data output unit, and the determination unit determines that the remaining amount of the battery is greater than or equal to a predetermined remaining amount Transmits the image data of the first resolution to the display data output unit, and when it is determined that the remaining amount of the battery is less than a predetermined remaining amount, the image data input from the data input unit is An apparatus comprising: an image processing unit that converts image data having a second resolution lower than the first resolution and transmits the image data to the display data output unit. In a device that incorporates a battery and can be connected to an AC adapter, and that records image data and displays an image based on the image data using power supplied from the battery or the AC adapter,
A data input unit for inputting image data of the first resolution;
A display data output unit for outputting image data for image display;
A recording data output unit for outputting image data for image recording;
A determination unit for determining whether or not an AC adapter is connected;
The first resolution image data input from the data input unit is transmitted to the recording data output unit, and when the determination unit determines that an AC adapter is connected, the display data output is performed. When the image data of the first resolution is also transmitted to the unit and it is determined that the AC adapter is not connected, the image data input from the data input unit And an image processing unit that converts the image data into image data having a resolution of 2 and transmits the image data to the display data output unit. In a device that records image data and displays an image based on the image data,
A data input unit for inputting image data of the first resolution;
A display data output unit for outputting image data for image display;
A recording data output unit for outputting image data for image recording;
A temperature sensor;
A determination unit for determining whether or not a temperature measured by the temperature sensor is equal to or higher than a predetermined temperature;
The first resolution image data input from the data input unit is transmitted to the recording data output unit, and the determination unit determines that the temperature measured by the temperature sensor is lower than a predetermined temperature. In this case, the data of the first resolution is also transmitted to the display data output unit. When it is determined that the temperature measured by the temperature sensor is equal to or higher than a predetermined temperature, the data is input from the data input unit. And an image processing unit that converts the received image data into image data having a second resolution lower than the first resolution and transmits the image data to the display data output unit. In a device that displays an image based on image data on an external display device,
A data input unit for inputting image data of the first resolution;
A data output unit for outputting image data;
A recognition unit that recognizes a resolution that can be received by the display device of the output destination;
When the first resolution matches the recognizable resolution recognized by the recognition unit, the image data input from the data input unit is directly transmitted to the image data output unit. ,
When the first resolution is a resolution that is recognized by the recognition unit and does not match a resolution that can be received by the display device, the display device can receive the image data input from the data input. An image processing unit that converts image data of a second resolution closest to the first resolution out of various resolutions and transmits the image data to the data output unit. In devices that display images based on image data,
A data input unit for inputting image data of the first resolution;
A data output unit for outputting image data for display;
An instruction unit for instructing whether to cut out image data representing an image of only a partial region of the image represented by the image data from the image data input from the data input unit;
A second resolution lower than the first resolution when the image data input from the data input unit is not instructed to cut out image data representing an image of only a partial area by the instruction unit. When the instruction unit instructs to cut out image data representing an image of only a partial area, the image data representing the partial area image is cut out and cut out. And an image processing unit that converts the image data to the data output unit by converting the image data into the image of the third resolution that is higher than the second resolution or the first resolution. . Determining whether the input image data is image data representing a still image or image data representing a continuous image;
Outputting the input image data for recording;
When it is determined that the input image data is image data representing a still image, the image data is output for display, and the input image data is determined to be image data representing a continuous image. And converting the image data into image data having a second resolution lower than the first resolution, which is the resolution of the image data, and outputting the image data for display. . Determining whether the remaining battery level is greater than or equal to a predetermined remaining level;
Outputting the input first resolution image data for recording;
When it is determined that the remaining battery level is greater than or equal to the predetermined remaining level, the image data is output for display, and when it is determined that the remaining battery level is less than the predetermined remaining level, And a step of converting the image data into image data having a second resolution lower than the first resolution, which is the resolution of the image data, and outputting the image data for display. Determining whether an AC adapter is connected;
Outputting the input image data for recording;
When it is determined that the AC adapter is connected, the image data is output for display, and when it is determined that the AC adapter is not connected, the image input from the data input unit is output. And a step of converting the data into image data having a second resolution lower than the first resolution, which is the resolution of the image data, and outputting the image data for display. Measuring the temperature and determining whether the measured temperature is equal to or higher than a predetermined temperature;
Outputting the input image data for recording;
When it is determined that the measured temperature is lower than the predetermined temperature, the image data is output for display, and when it is determined that the measured temperature is equal to or higher than the predetermined temperature, the image data is output. Converting the image data into image data having a second resolution lower than the first resolution, which is the resolution of the image data, and outputting the image data for display. Recognizing receivable resolution on the display device of the output destination;
When the resolution of the input image data matches the receivable resolution at the display device, the step of outputting the input image data as it is to the display device;
When the resolution of the input image data is a resolution that does not match the receivable resolution in the display device, the input image data is the resolution that can be received by the display device, And converting the image data into image data having a second resolution closest to the first resolution, which is the resolution of the image data, and outputting the image data to the display device. From the input image data, an instruction is received as to whether or not to cut out image data representing an image of only a partial area of the image represented by the image data,
When the extraction of image data representing an image of only a partial area is not instructed, the input image data is converted to a second resolution lower than the first resolution, which is the resolution of the image data. When the image data representing the image of only the partial area is instructed to be cut out, the image data representing the image of the partial area is cut out and the image data is kept at the first resolution. Or an image processing method comprising a step of converting and outputting an image having a third resolution higher than the second resolution.

Images