1. Field of the Invention
The present invention relates to image capturing technique for acquiring composition information from outside via a network.
2. Description of the Related Art
Image capturing apparatuses such as digital cameras capture images based on composition information (image capturing parameters) held in a built-in memory in advance and on composition information manually set by a user. The mainstream practice is that the image capturing parameters specifically designed for scenes such as portrait image capturing, macro image capturing and night view image capturing are held in the apparatuses, and images are captured using such information. Examples of the image capturing parameters include a value of a diaphragm of a lens, a shutter speed, and an ISO film speed.
Incidentally, rapid dissemination of network communication technology has contributed to advancement in always-connected apparatuses and cloud-based apparatuses in recent years. There has been a proposal to capture images after acquiring information such as image capturing parameters from a server and the like via a network (see, for example, Japanese Patent Laid-Open No. 2002-010114).
According to Japanese Patent Laid-Open No. 2002-010114 mentioned above, a server can adopt the optimal composition by taking into account, for example, information of an accessory that is currently attached. However, when the user owns a plurality of accessories such as lenses, there may be cases where the user is carrying the plurality of accessories with him/her but not all of them are currently attached. In such cases, there is a possibility that the user may miss the opportunity to capture a scene that could have been captured only by changing a lens.
The present invention has been made in consideration of the aforementioned problems, and realizes an image capturing technology that can increase the number of types of composition information provided by an information providing apparatus.
In order to solve the aforementioned problems, the present invention provides an image capturing apparatus comprising: an image capturing unit configured to capture an object and acquire image data; a first acquisition unit configured to acquire image capturing conditions of the image capturing apparatus; a holding unit configured to hold history information of peripheral devices that have been connected to the image capturing apparatus; and a second acquisition unit configured to acquire image capturing auxiliary information related to image capturing performed by the image capturing unit based on the image capturing conditions acquired by the first acquisition unit and on the history information held in the holding unit.
In order to solve the aforementioned problems, the present invention provides a control method of an image capturing apparatus having an image capturing unit that captures an object and acquires image data, the method comprising: acquiring image capturing conditions of the image capturing apparatus; holding history information of peripheral devices that have been connected to the image capturing apparatus; and acquiring image capturing auxiliary information related to image capturing performed by the image capturing unit based on the acquired image capturing conditions and on the held history information.
According to the present invention, the number of types of composition information provided by an information providing apparatus can be increased. Therefore, images can be captured with a composition that makes efficient use of accessories.
Further features of the present invention will become apparent from the following description of exemplary embodiments (with reference to the attached drawings).
Embodiments of the present invention will be described in detail below. The following embodiments are merely examples for practicing the present invention. The embodiments should be properly modified or changed depending on various conditions and the structure of an apparatus to which the present invention is applied. The present invention should not be limited to the following embodiments. Also, parts of the embodiments to be described later may be properly combined.
The following describes an embodiment in which the present invention is applied to, for example, an image capturing apparatus such as a digital camera that captures still images.
<Configuration of Apparatus>
First, a description is given of the external view of an image capturing apparatus according to an embodiment of the present invention with reference to
As shown in
The lens mount 111 is a member for connecting a lens unit 200, which serves as an accessory as will be described later with reference to
The flash detection unit 112 detects whether or not a flash is attached. The flash can be selectively attached to the apparatus as an accessory. As with the lens mount 111, the image capturing apparatus 100 exchanges information indicating whether or not the flash is attached and unique information of the flash.
A description is now given of configurations of the image capturing apparatus 100 and the lens unit 200 according to the present embodiment with reference to
First, the configuration of the image capturing apparatus 100 is explained.
Referring to
An image capturing unit 101 converts an analog image signal into a digital signal and generates digital image data to which signal processing such as JPEG encoding and MPEG encoding has been applied. Note that the analog image signal is generated by converting an image of an object focused by the lens unit 200 into an electrical signal using a photoelectric conversion element. The digital image data generated by the image capturing unit 101 is recorded in a memory card 105.
A CPU 102 deploys program codes stored in a non-volatile memory 110 to a volatile memory such as a RAM and executes the deployed program codes. The CPU 102 also executes processing corresponding to operational input from the release button 103 and the operation unit 109 and to various types of information received from a communication unit 104.
The release button 103 outputs signals serving as an image capturing trigger for instructing the start or end of image capturing and a trigger for starting acquisition of image capturing auxiliary information from an information providing apparatus 300, which will be described later with reference to
The communication unit 104 communicates with the information providing apparatus 300 that holds a database 400, which will be described later with reference to
The memory card 105 is a flash memory or a USB memory that is attachable to and detachable from a slot of the image capturing apparatus 100, and is used when writing and reading image data.
As shown in
The display unit 107 displays a menu related to settings of the image capturing apparatus 100 and images captured by the image capturing unit 101 (live-view). The display unit 107 also displays image capturing auxiliary information in such a manner that the displayed image capturing auxiliary information is superimposed over them (see
The operation unit 109 accepts, for example, an operation on a menu related to user settings of the image capturing apparatus 100, an operation for selecting and viewing image data stored in the memory card 105, and an operation for designating one of a plurality of pieces of image capturing auxiliary information acquired from the information providing apparatus 300.
Information that should be held during a deactivated period until the next activation, such as settings of the main body of the apparatus, is stored in the non-volatile memory 110. In the present embodiment, the non-volatile memory 110 is also used to hold model information of the main body of the apparatus, the aforementioned image capturing conditions, and unique information acquired from the lens unit 200 attached to the main body of the apparatus.
The lens mount 111 serves as an interface for exchanging unique information of the lens unit 200 attached to the main body of the apparatus.
The flash detection unit 112 detects attachment of a flash to the main body of the apparatus.
A composition determination unit 113 determines whether image capturing auxiliary information acquired from the information providing apparatus 300 is suited for the lens that is currently attached.
A description is now given of the configuration of the lens unit 200.
As shown in
The lens group 201 is constituted by a plurality of lenses such as a zoom lens and a focus lens.
The lens microcomputer 202 executes optical correction processing such as zoom and focus in accordance with a control signal from the lens control unit 108 of the image capturing apparatus 100, and outputs a control instruction corresponding to the result of the processing to the lens drive unit 204.
Unique information related to the lens unit 200 is stored in the non-volatile memory 203.
The lens drive unit 204 drives the lens group 201 in accordance with a control instruction from the lens microcomputer 202.
The communication unit 205 receives a control signal from the image capturing apparatus 100 and transmits unique information and control information of the lens unit 200 to the image capturing apparatus 100.
<Configuration of Information Providing Apparatus>
The following describes the configuration of the information providing apparatus 300 that holds a database with reference to
Referring to
One example of the information providing apparatus 300 is a web server operating through cloud computing. However, the information providing apparatus 300 is not limited to the configuration shown in
<Structure of Database>
The following describes the structure of the database 400 held in the information providing apparatus 300 with reference to
As shown in
The main body ID 401 indicates the model of an image capturing apparatus suited for capturing the corresponding scene. The lens ID 402 indicates the type of a lens suited for capturing the corresponding scene. The GPS information 403 indicates the location suited for capturing the corresponding scene. In the present embodiment, the GPS information 403 is expressed in latitude and longitude. The direction information 404 indicates the direction suited for capturing the corresponding scene. The date/time information 405 indicates the date and time suited for capturing the corresponding scene. In particular, the date/time information 405 is useful in specifying the season and time zone. The flash/no-flash information 406 indicates whether or not the use of a flash is suited for capturing the corresponding scene. The image capturing auxiliary information 407 indicates a composition for optimally capturing the corresponding scene.
The image capturing auxiliary information 407 may be image data captured with the optimal composition, information for controlling display of gridlines on the camera, and the like. Alternatively, the image capturing auxiliary information 407 may be information presented to the user to suggest the optimal settings. Although the main body ID 401 and the lens ID 402 have been described as separate items, a pair of the main body ID 401 and the lens ID 402 may be managed as one item.
<Processing for Acquiring Image Capturing Auxiliary Information>
A description is now given of processing for acquiring the image capturing auxiliary information in the present embodiment with reference to
When the image capturing apparatus 100 has entered an image capturing mode in response to a user operation and the like, the processing shown in
Referring to
In S502, the CPU 102 acquires model information of the main body of the apparatus, image capturing conditions, and lens unique information from the non-volatile memory 110. The lens unique information is transmitted from the communication unit 205 to the image capturing apparatus 100 via the lens mount 111 when the lens unit 200 is attached to the main body of the apparatus. Also, in S502, the CPU 102 acquires GPS information, direction information and date/time information at the time of the first pressed state S1 from the image capturing condition acquisition unit 106. Information indicating whether or not the flash is attached is acquired from the flash detection unit 112. In the present embodiment, it is assumed that positioning is performed in advance on a periodic basis using the GPS 1061, and that the latest position information is held in the image capturing condition acquisition unit 106. Therefore, in S502, the CPU 102 acquires the current latest position information during the first pressed state S1.
In S503, the CPU 102 transmits various types of information acquired in S502 to the information providing apparatus 300 via the communication unit 104.
The following describes the operation performed by the information providing apparatus 300 upon receiving various types of information from the image capturing apparatus 100 with reference to
Referring to
In S602, the CPU 301 refers to the database 400 shown in
The following description is given under the assumption that the CPU 301 determines that the various types of information received from the image capturing apparatus 100 correspond to scene 1.
In S603, the CPU 301 reads, from the HDD 304, image capturing auxiliary information (in the present case, Pattern A) associated with the corresponding scene (in the present case, scene 1) that has been found as a result of the search in S602.
Thereafter, in S604, the CPU 301 transmits the image capturing auxiliary information read in S603 to the image capturing apparatus 100. The CPU 301 then ends the processing.
Returning to the description of
In S505, the CPU 102 displays the image capturing auxiliary information received in S504 on the display unit 107.
According to the present embodiment, model information of the image capturing apparatus 100, image capturing conditions, unique information of the lens that is currently attached, and the like are transmitted to the information providing apparatus 300, and the image capturing auxiliary information is acquired in response. In this way, an image can be captured with the optimal composition for the configuration of the image capturing apparatus including the lens used by the user.
A description is now given of processing for acquiring image capturing auxiliary information in a second embodiment with reference to
In the first embodiment described with reference to
Note that the present embodiment will be described under the precondition that the image capturing apparatus 100 and the information providing apparatus 300 are configured in a manner similar to the first embodiment, and that a plurality of lens units have already been attached in the past. When a lens unit is attached, lens information that is stored in the non-volatile memory 203 thereof is recorded as history information in the non-volatile memory 110 of the image capturing apparatus 100 via the communication unit 205. It is assumed here that three types of lens units, that is to say, lenses A, B and C have been attached to the image capturing apparatus 100 in the past, and that history information of these three types of lenses is recorded in the non-volatile memory 110 of the image capturing apparatus 100.
The processes of S801 to S804 in
In S805, through the composition determination unit 113, the CPU 102 determines whether image capturing parameters can be set for the lens that is currently attached based on the image capturing auxiliary information received from the information providing apparatus 300. For example, this determination is made in the image capturing apparatus 100 based on the image capturing auxiliary information to which information of lenses for which the image capturing parameters can be set has been added as metadata. When the CPU 102 determines that the image capturing parameters can be set in S805, the CPU 102 displays the image capturing auxiliary information on the display unit 107 in S806 so as to present it to the user.
When the CPU 102 determines that the image capturing parameters cannot be set in S805, the CPU 102 displays a lens changing guidance on the display unit 107 in S807 so as to suggest the user to change the lens.
According to the present embodiment, attachment history information of each lens is held, and image capturing auxiliary information corresponding thereto is acquired. In this way, only the image capturing auxiliary information with which image capturing parameters can be set for a lens that has been attached in the past can be acquired from the information providing apparatus.
A description is now given of a third embodiment with reference to
In the above-described embodiments, image capturing auxiliary information corresponding to only one composition is acquired from the information providing apparatus. On the other hand, in the present embodiment, a plurality of pieces of image capturing auxiliary information are acquired from the information providing apparatus.
Note that the present embodiment will be described on the precondition that the image capturing apparatus 100 and the information providing apparatus 300 are configured in a manner similar to the above-described embodiments. Also, the processes of S1101 to S1103 in
Referring to
In S1105, the CPU 102 displays the plurality of pieces of image capturing auxiliary information on the display unit 107, and the user designates one of the plurality of pieces of image capturing auxiliary information.
In S1106, through the composition determination unit 113, the CPU 102 determines whether image capturing parameters can be set for the lens that is currently attached based on the image capturing auxiliary information designated by the user, in a manner similar to S505 shown in
When the CPU 102 determines that the image capturing parameters cannot be set in S1106, the CPU 102 displays the lens changing guidance shown in
Once the user has changed to another image capturing auxiliary information in response to the message in S1109, the processing returns to S1106 in which determination is made as to whether the image capturing parameters can be set based on the post-change image capturing auxiliary information, and the image capturing auxiliary information or the lens changing guidance is presented.
The CPU 102 may display the acquired plurality of pieces of image capturing auxiliary information in the form of a list, such as “scene 1”, “scene 2”, and so on. In this case, the image capturing auxiliary information acquired based on the accessory that is currently attached and the image capturing auxiliary information acquired based on the history information may be identifiably displayed. Such display may be realized, for example, by displaying scene names in different colors or by displaying scene names with emphasis. Furthermore, the image capturing auxiliary information acquired based on the accessory that is currently attached may be displayed preferentially over the image capturing auxiliary information acquired based on the history information. For example, the image capturing auxiliary information acquired based on the accessory that is currently attached may be displayed in a selected state as default. Alternatively, the image capturing auxiliary information acquired based on the accessory that is currently attached may be displayed higher on the list than the image capturing auxiliary information acquired based on the history information.
According to the present embodiment, a plurality of pieces of image capturing auxiliary information are acquired from the information providing apparatus, the user selects any piece of image capturing auxiliary information that is considered to be suited for the image capturing apparatus from among the plurality of pieces of image capturing auxiliary information, determination is made as to whether image capturing parameters can be set based on the selected piece of image capturing auxiliary information, and the result of the determination is presented. In this way, an image can be captured with the optimal composition selected from among the plurality of pieces of image capturing auxiliary information.
Aspects of the present invention can also be realized by a computer of a system or apparatus (or devices such as a CPU or MPU) that reads out and executes a program recorded on a memory device to perform the functions of the above-described embodiment(s), and by a method, the steps of which are performed by a computer of a system or apparatus by, for example, reading out and executing a program recorded on a memory device to perform the functions of the above-described embodiment(s). For this purpose, the program is provided to the computer for example via a network or from a recording medium of various types serving as the memory device (e.g., computer-readable medium). In such a case, the system or apparatus, and the recording medium where the program is stored, are included as being within the scope of the present invention.
While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.
This application claims the benefit of Japanese Patent Application No. 2012-061145, filed Mar. 16, 2012, which is hereby incorporated by reference herein in its entirety.
Number | Date | Country | Kind |
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2012-061145 | Mar 2012 | JP | national |