JP2010118984A - Photographing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a photographing apparatus for performing appropriate photographing. <P>SOLUTION: This photographing apparatus includes: a storage section (108) for storing a main subject; image capturing sections (102, 103) for capturing a first image, and a second image including at least a part of a field of the first image; and warning sections (154, 111) for raising a warning when the main subject is included in the second image. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a photographing apparatus.

  2. Description of the Related Art In addition to a main camera that captures a subject in front, an imaging apparatus that includes a sub camera that captures an image in a direction different from that of the main camera is known. In such a photographing apparatus, a photographer who is photographing a subject is photographed using a sub camera and recorded together with a subject image photographed by a main camera (see, for example, Patent Document 1).

However, a conventional photographing apparatus having a sub camera merely shoots a photographer's image together with a subject image, and does not use an image photographed by the sub camera for photographing with the main camera.
JP 2006-033611 A

  The subject of this invention is providing the imaging device which can perform suitable imaging | photography.

  The present invention solves the above problems by the following means. For ease of understanding, reference numerals corresponding to the drawings showing an embodiment of the present invention are given and described, but the present invention is not limited to this.

  The invention according to claim 1 is an image acquisition capable of acquiring a storage unit (108) for storing a main subject, a first image, and a second image including at least a part of an object scene of the first image. Unit (102, 103) and a warning unit (154, 111) for giving a warning when the main subject is included in the second image.

  The invention according to claim 2 is characterized in that the warning unit (154, 111) issues a warning when the main subject is included in the second image and is not included in the first image. To do.

  The invention described in claim 3 includes a first optical system (112) for forming the first image and a second optical system (123) having a wider angle than the first optical system for forming the second image. It is characterized by including.

  The invention according to claim 4 is characterized in that the second image includes the entire scene of the first image.

  The invention described in claim 5 includes an image storage unit (109) for storing the first image.

  The invention according to claim 6 is characterized in that the image acquisition unit (102, 103) acquires the second image with a coarser resolution than the first image.

  The invention according to claim 7 includes an input unit (152) to which a feature corresponding to the main subject is input, and the storage unit (108) recognizes based on the feature input to the input unit. The main subject is stored.

  The invention according to claim 8 is characterized in that the feature is at least one of color, contrast, shape and movement.

  The invention according to claim 9 is characterized in that the main subject is a human.

  The invention according to claim 10 includes a display unit (107) for displaying the second image, and the warning unit (154, 111) is displayed on the second image displayed on the display unit (107). The main subject included is highlighted.

  The invention according to claim 11 is characterized in that the warning unit (154, 111) generates at least one of sound, light, and vibration when the main subject is included in the second image.

  Note that the configuration described with reference numerals may be improved as appropriate, or at least a part thereof may be replaced with another component.

  The imaging device according to the present invention can provide an imaging device capable of performing suitable imaging.

  Hereinafter, an embodiment of a photographing apparatus 101 according to the present invention will be described in detail with reference to the drawings. The photographing apparatus 101 warns the photographer of the position of the main subject outside the photographing area of the main photographed image, so that the photographer can know in advance the direction in which the main subject enters the photographing area, The main subject can be shot without missing the perfect shooting timing. In the present embodiment, the case where the main subject is a human will be described, but it may be an animal or a vehicle.

  FIG. 1 is a block diagram illustrating a configuration of the image capturing apparatus 101 according to the present embodiment. The photographing apparatus 101 includes a main camera 102, a sub camera 103, and a common unit 104. In FIG. 1, the main camera 102, the sub camera 103, and the common unit 104 are drawn as separate blocks so that the explanation is easy to understand. There is no boundary, and it is sufficient that the components included in these blocks are included in one photographing apparatus 101.

  Next, the appearance of the photographing apparatus 101 will be described with reference to FIG. FIG. 2A illustrates a front view of the photographing apparatus 101, and FIG. 2B illustrates a rear view of the photographing apparatus 101. FIG. In FIG. 1 and FIG. 2, blocks with the same reference numerals indicate the same thing.

  In FIG. 2, various operation buttons included in the operation unit 106 in FIG. 1 are arranged on the housing of the photographing apparatus 101. For example, operation buttons such as a power button 251, a release button 252, a zoom button 253, and a cross cursor button 254 are arranged on the housing of the photographing apparatus 101, and operation information on these operation buttons is output to the control unit 105.

  In FIG. 2A, a lens optical system 112 of the main camera 102 is disposed in front of the photographing apparatus 101, and a lens optical system 123 of the sub camera 103 is disposed beside it. Here, the lens optical system 112 of the main camera 102 and the lens optical system 123 of the sub camera 103 capture the same front direction. It is desirable that the lens optical system 112 of the main camera 102 and the lens optical system 123 of the sub camera 103 be arranged as close as possible so that the parallax is reduced. In the photographing apparatus 101 according to the present embodiment, the lens optical system 123 of the sub camera 103 has a wider angle than the lens optical system 112 of the main camera 102.

  Next, the configuration of each unit in FIG. 1 will be described in detail. In FIG. 1, the main camera 102 includes a lens optical system 112, an imaging unit 113, an analog signal processing unit 114, an A / D conversion unit 115, an image buffer 116, a digital signal processing unit 117, and an AE unit 118. And an AF unit 119 and a lens driving unit 120, and takes a first image. Here, the first image is a main photographed image photographed by the photographing apparatus 101. The actual captured image is not an auxiliary image used for various controls but a captured image for the purpose of storage or printing.

  In the main camera 102, light incident from the subject is imaged on the light receiving surface of the imaging unit 113 via the lens optical system 112. In the imaging unit 113, the photoelectric conversion unit is two-dimensionally arranged on the light receiving surface, and converts light into an electrical signal. The analog signal processing unit 114 performs noise removal and amplification of the electrical signal output from the imaging unit 113. The A / D conversion unit 115 converts an analog electrical signal into digital image data and temporarily stores it in the image buffer 116.

  The digital signal processing unit 117 performs image processing such as gamma conversion and color correction processing on the image data temporarily stored in the image buffer 116 and outputs the processed image data to the control unit 105. Then, the control unit 105 stores the actual captured image processed by the digital signal processing unit 117 in the memory card 109 and displays it on the liquid crystal monitor 107 as necessary.

  The AE unit 118 performs photometry in an area designated in advance before shooting and outputs the result to the control unit 105. And the control part 105 performs exposure control at the time of actual imaging | photography with the imaging part 113 according to a photometric value.

  The AF unit 119 obtains the defocus amount in a preset focus area in the shooting screen and outputs it to the control unit 105. Then, the control unit 105 obtains a focal position according to the defocus amount, and instructs the lens driving unit 120 to control the position of the focus lens of the lens optical system 112. The control unit 105 instructs the lens driving unit 120 in accordance with the zoom button operation of the operation unit 106, and moves the zoom lens of the lens optical system 112 to change the focal length.

  Here, the control unit 105 captures the main captured image and the preview image with the main camera 102. The actual captured image is an image that is captured when the photographer presses the release button 252 and is stored in the memory card 109. The preview image is an image that is displayed on the liquid crystal monitor 107 continuously in time and is taken for the photographer to determine the shooting composition before the release button 252 is pressed.

  Next, the sub camera 103 will be described. The sub camera 103 includes a lens optical system 123, an imaging unit 124, an analog signal processing unit 125, an A / D conversion unit 126, an image buffer 127, and a digital signal processing unit 128, and displays a second image. Take a picture. The second image is an auxiliary image that is captured by the sub camera 103 while the preview image is captured by the main camera 102. In the present embodiment, the main subject is recognized using the second image. In addition, the shooting angle of view of the second image is wider than the shooting angle of view of the first image, and the second image includes at least a part of the scene of the first image. Furthermore, the resolution of the second image may be lower than the resolution of the first image.

  Here, in this embodiment, the lens optical system 123 of the sub camera 103 is a fixed-focus lens having a wider angle than the wide end of the zoom lens of the lens optical system 112 of the main camera 102, but is the same as the lens optical system 112. A lens may be used and a lens driving unit 129 may be provided so that focus control and zoom control can be performed like the main camera 102. Similarly, the same AE unit 118 and AF unit 119 of the main camera 102 may be provided on the sub camera 103 side.

  In the sub camera 103, light incident from the subject is imaged on the light receiving surface of the imaging unit 124 via the lens optical system 123. The imaging unit 124 converts light into an electric signal by a photoelectric conversion unit arranged two-dimensionally on the light receiving surface. The analog signal processing unit 125 performs noise removal and amplification of the electrical signal output from the imaging unit 124. The A / D converter 126 converts an analog electrical signal into digital image data, and temporarily stores it in the image buffer 127.

  The digital signal processing unit 128 performs image processing such as gamma conversion and color correction processing on the image data temporarily stored in the image buffer 127 and outputs the processed image data to the control unit 105. The control unit 105 performs recognition processing of a main subject registered in advance from the captured image of the sub camera 103 subjected to image processing by the digital signal processing unit 128. The main subject recognition process will be described in detail later.

  Next, the common unit 104 will be described. The common unit 104 includes a control unit 105, an operation unit 106, a liquid crystal monitor 107, a memory 108, a card I / F 110 that connects the memory card 109, and a warning unit 111.

  In the common unit 104, the photographer operates the photographing apparatus 101 using a release button 252, a zoom button 253, a cross cursor button 254, and the like included in the operation unit 106. The control unit 105 operates according to a program incorporated therein in advance, and controls each block of the photographing apparatus 101 according to operation information obtained from the operation unit 106. The control unit 105 also displays on the liquid crystal monitor 107 character messages and graphics such as captured images or menu screens obtained from the main camera 102 and the sub camera 103.

  The memory 108 stores parameters used when the control unit 105 controls each unit. In particular, in the present embodiment, subject information for recognizing the main subject is stored. In addition, an image actually captured by the main camera 102 is stored in a memory card 109 attached to the card I / F 110.

  When the control unit 105 recognizes the main subject, the warning unit 111 notifies the photographer that the main subject has been recognized in the second image using at least one of sound, light, and vibration. For example, the warning unit 111 includes a buzzer or a speaker that warns the photographer with an alarm sound or voice. Alternatively, a vibration motor that notifies the photographer of the recognition of the main subject by vibration may be used. Alternatively, the backlight of the liquid crystal monitor 107 may be blinked, or a dedicated LED (light emitting diode) may be provided to notify the photographer of the recognition of the main subject by light.

  Next, the control unit 105 will be described in detail. The control unit 105 operates according to a program incorporated therein in advance, and controls each unit of the main camera 102 and the sub camera 103. Further, in the present embodiment, the control unit 105 performs recognition processing of the main subject using the captured image of the sub camera 103 and gives various messages for assisting shooting according to the recognition result of the main subject to the warning unit 111. And output to the liquid crystal monitor 107. The control unit 105 includes processing units such as a subject recognition unit 151, a registration processing unit 152, and a warning processing unit 154 in order to perform main subject recognition processing and the like.

  The subject recognition unit 151 recognizes whether or not there is a main subject registered in advance in the memory 108 with respect to the second image temporarily stored in the image buffer 127 of the sub camera 103. Here, the following subject information is used to recognize the main subject. For example, color (RGB histogram, etc.), contrast (luminance value, luminance change, etc.), movement (movement speed, movement acceleration, movement direction, etc.), shape (face shape, appearance, belongings, hairstyle, etc.), action pattern (hand Specific information) and composition (two-person, three-person, etc.) subject information is used. Alternatively, as one method for recognizing a specific person, a face recognition processing unit 154 for identifying whether or not the facial feature amounts match may be provided. Here, the feature amount of the face includes the shape of the face, the position and size of the eyes, the position and size of the nose and mouth, the arrangement of the eyes, nose and mouth with respect to the entire face. A specific person can be recognized based on the difference in the feature amount of the face. Alternatively, subject information such as clothes color and face recognition processing described above may be used in combination.

  Here, an example of subject recognition will be described with reference to FIG. As shown in FIG. 3A, the shooting area 301 (second image) of the sub camera 103 is wider than the shooting area 302 (first image) of the main camera 102. FIG. 3 shows an example in which the second image includes the entire scene of the first image, but it is sufficient that the second image includes at least a part of the scene of the first image. In the figure, there are three persons in the shooting area 302 of the main camera 102, but the person A who is the main subject is not in the shooting area 302 of the main camera 102. However, since the shooting area 301 of the sub camera 103 contains the person A who is the main subject, the subject recognition unit 151 knows that the person A is on the left side of the shooting area 302 of the main camera 102.

  Also, assuming that the image captured subsequent to the image of FIG. 3A is FIG. 3B, the person A who is the main subject is closer to the imaging area 302 of the main camera 102 than in the case of FIG. It can be seen that the person A is approaching the shooting area 302 of the main camera 102 from the left side of the screen. Here, if the shooting interval of the images of FIGS. 3A and 3B is known and the moving distance of the main subject on the screen is measured, the moving speed of the main subject on the screen can be obtained. . In addition, if there is an image that is continuously captured in time in the image of FIG. 3B, the movement acceleration can be obtained from the change in the position of the main subject in the three images. Alternatively, the moving direction can also be obtained from a change in coordinates on the screen of the main subject. In this way, the subject recognition unit 151 can recognize the position and state (movement speed, movement direction, etc.) of the main subject.

  It should be noted that the area for subject recognition in the second image captured by the sub camera 103 does not necessarily have to be performed on the entire second image capturing area 301 as shown in FIG. For example, as shown in FIG. 4 (a), only the left and right areas 401 and 402 of the first image shooting area 302 in the second image shooting area 301 may be targeted. As shown, subject recognition may be performed only on a specific area 403.

  As described above, the registration processing unit 152 corresponds to an input unit to which a feature corresponding to the main subject is input, and the feature may be at least one of color, contrast, shape, and motion. Alternatively, action patterns, configurations, facial feature quantities, and the like may be used. In the subject registration mode, the registration processing unit 152 performs processing for registering main subject information as described above in the memory 108. In the registration procedure, first, the main camera 102 or the sub camera 103 shoots the main subject to be registered in the subject registration mode before the main camera 102 performs the main shooting. The photographed image is displayed on the liquid crystal monitor 107, and the photographer uses the cross cursor button 254 of the operation unit 106 to designate the main subject portion to be registered by surrounding it with a frame or the like, and registers it in the memory 108. At this time, the registration processing unit 152 extracts subject information (color, facial feature amount, etc.) of a portion designated by the photographer, and writes the subject information in the memory 108. When a plurality of main subjects are registered, different numbers and alphabets are assigned in the order of registration, and each main subject is associated with the subject information and registered in the memory 108.

  Further, the moving speed of the main subject may be registered as subject information. In this case, for example, as shown in FIG. 5, it is possible to select from several predetermined items such as the speed of walking, the speed of running, and the speed of vehicles such as cars and trains. Alternatively, the speed may be input numerically. In this way, by adding not only the color and shape of the main subject but also the movement speed to the recognition conditions for the main subject, it is possible to reliably distinguish between a person in red clothes and a red car with different movement speeds. it can. Alternatively, it is also effective when shooting a vehicle such as a train or car as a main subject.

  Furthermore, the subject information of the main subject registered in the memory 108 by the registration processing unit 152 can be confirmed on the main subject information confirmation screen. The main subject information confirmation screen is displayed by the photographer using the cross cursor button 254 of the operation unit 106 or the like. For example, the main subject information confirmation screen as shown in FIG. 6 indicates that the subject information of the main subject A is red and has a medium size (for example, about 50 × 50 pixels). Similarly, the subject information of the main subject B is yellow and indicates a small size (for example, 10 × 10 pixels or less), and the subject information of the main subject C is green and has a large size (for example, 100 × 100 pixels). It is shown that the size is above. Note that when the subject information shown in FIG. 6 is a feature amount of a face (such as the shape of a face or the arrangement of eyes and mouth), a face image may be displayed for confirmation.

  The warning processing unit 154 outputs a warning sound or a voice message from the warning unit 111 according to the determination result of the main subject of the subject recognition unit 151. For example, in the case of a voice message, “the main subject is on the right (or left)”, “the main subject is approaching from the right side of the screen”, or “the main subject is moving to the left side of the screen”. Output a voice message. In the case of an alarm sound, a sound is emitted when a main subject is recognized within the shooting area of the sub camera 103, and the photographer is informed that the main subject is near the shooting area of the main camera 102. Alternatively, increasing the volume gradually indicates that the main subject is approaching the shooting angle of view of the main camera 102, or decreasing the volume gradually reduces the main subject from the shooting angle of view of the main camera 102. Can be shown. Further, the alarm unit 111 is provided with speakers on the left and right sides of the photographing apparatus 101. When there is a main subject on the right side, an alarm sound or sound is output from the right speaker, and when there is a main subject on the left side, the left speaker is used. An alarm sound or sound may be output.

  Alternatively, a text message may be displayed in an overlapping manner with the preview image displayed on the liquid crystal monitor 107 instead of the alarm sound or voice. For example, since the movement of the person A is not known in the state of FIG. 3A, a character message “Person A is on the left side” is displayed as shown in FIG. Similarly, since the movement of the person A is known in the state of FIG. 3B, a character message “Person A approaches from the left side” is displayed as shown in FIG. 7B.

  Further, as shown in FIG. 8 (a), the frame of the preview screen on the side where the main subject is present may be blinked. As shown in FIG. 8 (b), a graphic such as an arrow overlaps the preview image. You may display it. In particular, when an arrow is displayed, an arrow pointing toward the center of the screen of the LCD monitor 107 is displayed when the main subject approaches, and an arrow pointing outward from the screen of the LCD monitor 107 is displayed when the main subject moves away. It is easy to understand visually.

  Further, since it is possible to detect that the person A as the main subject has entered the shooting area of the main camera 102, a voice message “The main subject has entered the shooting area” is output from the warning unit 111. Can call attention. In this case, as shown in FIG. 8C, highlighting may be performed by changing the luminance of the main subject portion of the preview image displayed on the liquid crystal monitor 107 to blink. As will be described later, when the main subject enters the shooting area of the main camera 102, the control unit 105 may automatically press the release button 252.

  In this way, the warning processing unit 154 issues a warning when the main subject is included in the second image of the sub camera 103 and is not included in the first image of the main camera 102. The position where the main subject is outside the shooting area of the main photographed image and the shooting area of the main photographed image by the alarm sound, voice, text message, graphic display, etc. that the section 154 outputs to the warning section 111 and the liquid crystal monitor 107 You can know the position and situation of the main subject before shooting, such as whether you are approaching or moving away. As a result, the photographer can perform the main photographing of the main subject without missing the perfect photographing timing.

  Next, the operation at the time of photographing of the photographing apparatus 101 according to the present embodiment will be described using the flowchart of FIG. Note that the flowchart of FIG. 9 operates according to a program incorporated in advance in the control unit 105. Further, it is assumed that subject information of a main subject that the photographer wants to photograph is already registered in the memory 108 of the photographing apparatus 101. Hereinafter, description will be made in order according to the flowchart of FIG.

  (Step S101) The photographer presses the power button 151 of the photographing apparatus 101 to turn on the power.

  (Step S <b> 102) The control unit 105 first activates the main camera 102, and displays a preview image captured by the imaging unit 113 via the lens optical system 112 on the liquid crystal monitor 107 as described above. The photographer confirms the subject to be photographed and the photographing composition while viewing the preview image. At the same time, the control unit 105 activates the sub camera 103 and captures the second image via the lens optical system 123 as described above.

  (Step S103) It is determined whether or not the photographer has pressed the release button of the operation unit 106. If the release button has been pressed, the process proceeds to step S108, and if the release button has not been pressed, the process proceeds to step S104.

  (Step S <b> 104) The subject recognition unit 151 of the control unit 105 performs main subject recognition processing on the second image captured by the sub camera 103. That is, it is determined whether or not the subject information of the recognized subject matches the subject information of the main subject registered in the memory 108 in advance. If it matches the registered subject information of the main subject, the process proceeds to step S105, and if it does not match the registered subject information of the main subject, the process proceeds to step S106.

  (Step S105) The warning processing unit 154 of the control unit 105 outputs an alarm sound, a voice, a text message, a graphic display, or the like to the warning unit 111 or the liquid crystal monitor 107.

  (Step S106) If the warning processing unit 154 of the control unit 105 has already output an alarm sound or voice to the warning unit 111, it is reset, and output of the alarm sound, voice message, text message, graphic display, etc. is stopped. . At this time, a voice message or a text message such as “No main subject is found in the vicinity of the shooting area” may be output.

  (Step S <b> 107) The control unit 105 performs main shooting with the main camera 101 and stores it in the memory card 109.

  (Step S108) A series of photographing processing is terminated.

  In this way, the photographer can determine in which direction the main subject is outside the photographing area of the main photographed image by the alarm sound, voice, text message, graphic display, etc. output from the warning processing unit 153 to the warning unit 111 or the liquid crystal monitor 107. The main subject information such as whether the subject is near or away from the photographing area can be known, and the main photographing can be performed without missing the perfect photographing timing.

Note that the photographing apparatus 101 may be provided with an automatic photographing mode for photographing the main subject. In this case, as shown in the flowchart of FIG. 10, after step S105 of the flowchart of FIG. 9, processing step S109 for determining whether or not the main subject is in the shooting area of the main shooting image is inserted. It is.
(Step S109) The control unit 105 determines whether or not the main subject is in the shooting area of the main captured image. If the main subject is in the shooting area of the main shooting image, the release button 252 is automatically pressed to proceed to the shooting process in step S107. If the main subject is not in the shooting area of the main shooting image, The process returns to step S102.

  In this way, the release button 252 is automatically pressed when the main subject enters the shooting area of the main shooting image, so that the main shooting can be reliably performed for the main subject. Furthermore, if the photographing apparatus 101 is set to the continuous photographing mode, automatic photographing continues while the main subject is in the photographing area of the main photographing image, so that a favorite photographing image can be selected later. it can.

  Here, when a plurality of subjects are identified, the subject recognition unit 151 detects the position and situation (movement direction, movement speed, etc.) of the main subject as described with reference to FIG. 3 for each main subject. For example, as shown in FIG. 11, when there are a person B and a person C as main subjects registered outside the shooting area 302 of the main shooting image, an arrow appears on the preview image of the shooting area 302 displayed on the liquid crystal monitor 107. And the main subject names and registration numbers such as “B” and “C” are displayed on the arrows, whereby the position and status of each main subject among the plurality of main subjects can be confirmed. Alternatively, the tone color or voice message of the warning sound output from the warning unit 111 may be changed for each main subject. Thus, even when a plurality of main subjects are registered, the same effect can be obtained.

  In the present embodiment, the liquid crystal monitor 107 displays an image of the same shooting area as the main captured image captured by the main camera 102 as a preview image. However, the captured image of the sub camera 103 is displayed on the liquid crystal monitor 107. You may make it displayable. In this case, the shooting area of the main shooting image shot by the main camera 101 is displayed as a dotted line frame on the shooting image of the sub camera 103, or the luminance of the main subject portion outside the shooting area of the main shooting image is changed. The photographer may be alerted.

  Alternatively, the image displayed on the liquid crystal monitor 107 may be switched between the captured image of the main camera 102 and the captured image of the sub camera 103 by an operation button of the operation unit 106. For example, if the photographed image of 102 and the photographed image of the sub camera 103 can be switched with a single touch of any one of the cross cursor buttons 254, it is possible to instantly confirm the situation outside the photographing area of the main photographed image. Also in this case, the main subject portion is displayed so as to be easily understood by the photographer by a method such as blinking. As a result, the photographer can be prepared before the main subject is actually photographed, so that the photo opportunity can be surely captured.

  The imaging apparatus 101 according to the present embodiment can be applied not only to a still camera but also to all apparatuses that can capture an image, including a video camera, a camera-equipped mobile phone, and the like.

  As described above, the image capturing apparatus 101 according to the present embodiment recognizes the main subject by capturing the second image having a wider angle than the first image captured by the main camera 102 using the sub camera 103. Since the person is warned of the position and situation of the main subject before the main photographing, the photographer can surely photograph the main subject without missing the photo opportunity.

It is a block diagram of the imaging device 101 which concerns on this embodiment. 2 is an explanatory diagram illustrating an appearance of a photographing apparatus 101. FIG. It is explanatory drawing for demonstrating the recognition process of a main to-be-photographed object. It is explanatory drawing which shows a to-be-recognized area | region. It is explanatory drawing which shows the menu screen which sets the moving speed at the time of object recognition. It is explanatory drawing which shows the example of a display of main subject registration information. It is explanatory drawing which shows the example of a display of a character message. It is explanatory drawing which shows the example of a display of the position of a main to-be-photographed object. 3 is a flowchart showing the operation of the photographing apparatus 101. 10 is a flowchart showing other operations of the image capturing apparatus 101. It is explanatory drawing for demonstrating the recognition process of several main subjects.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 ... Imaging device 102 ... Main camera 103 ... Sub camera 104 ... Common part 105 ... Control part 106 ... Operation part 107 ... Liquid crystal monitor 108 ... Memory 109 ...・ Memory card 110 ... Card I / F
DESCRIPTION OF SYMBOLS 111 ... Warning part 112 ... Lens optical system 113 ... Imaging part 114 ... Analog signal processing part 115 ... A / D conversion part 116 ... Image buffer 117 ... Digital signal processing part 118 ... AE unit 119 ... AF unit 120 ... Lens driving unit 123 ... Lens optical system 124 ... Imaging unit 125 ... Analog signal processing unit 126 ... A / D conversion unit 127 ... Image buffer 128 ... Digital signal processing unit 151 ... Subject recognition unit 152 ... Registration processing unit 153 ... Subject discrimination unit 154 ... Warning processing unit 251 ... Power button 252 ...・ Release button 253 ... Zoom button 254 ... Cross cursor button

Claims (11)

A storage unit for storing main subjects;
An image acquisition unit capable of acquiring a first image and a second image including at least a part of a scene of the first image;
And a warning unit that issues a warning when the main subject is included in the second image. An imaging apparatus according to claim 1,
The imaging device is characterized in that the warning unit issues a warning when the main subject is included in the second image and not included in the first image. The imaging device according to claim 1 or 2, wherein
A first optical system for forming the first image;
And a second optical system having a wider angle than the first optical system for forming the second image. It is an imaging device given in any 1 paragraph of Claims 1-3,
The imaging apparatus according to claim 1, wherein the second image includes the entire scene of the first image. It is an imaging device given in any 1 paragraph of Claims 1-4,
An imaging apparatus comprising an image storage unit for storing the first image. An imaging apparatus according to any one of claims 1 to 5, wherein
The image acquisition unit acquires the second image at a coarser resolution than the first image. It is an imaging device given in any 1 paragraph of Claims 1-6,
An input unit for inputting features corresponding to the main subject;
The imaging apparatus, wherein the storage unit stores the main subject recognized based on the feature input to the input unit. The photographing apparatus according to claim 7,
The photographing apparatus is characterized in that the characteristic is at least one of color, contrast, shape, and movement. It is an imaging device given in any 1 paragraph of Claims 1-8,
The photographing apparatus according to claim 1, wherein the main subject is a human being. It is an imaging device given in any 1 paragraph of Claims 1-9,
A display unit for displaying the second image;
The imaging device, wherein the warning unit highlights the main subject included in the second image displayed on the display unit. It is an imaging device given in any 1 paragraph of Claims 1-10,
The imaging device according to claim 1, wherein the warning unit generates at least one of sound, light, and vibration when the main subject is included in the second image.

Images