JP2010028237A - Image pickup device and method for determining photographic parameter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain optimal photography easily by identifying an object in a field, obtaining the photography parameters by compounding a plurality of initial photographic parameters of the object, and then calculating and determining the optimal photographic parameters dynamically according to the field. <P>SOLUTION: An image pickup device comprises a means for photographing the field, a means for identifying an object included in the field from an image photographed by the means for photographing the field, and a means for dynamically calculating and determining photographic parameters for use in photography by the means for photographing the field, by compositing the initial photographic parameters in a small region, including the center of each object identified by the means for identifying an object. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a photographing apparatus suitable for a digital camera or the like that automatically determines exposure and a photographing parameter determination method.

  2. Description of the Related Art Conventionally, there are some photographing apparatuses in which various settings at the time of photographing are automated. For example, some digital cameras have an AF function that automates focusing, an automatic exposure (AE) function that automates exposure, and a white balance (WB) adjustment function.

  Exposure adjustment is performed by changing the aperture of the lens and the shutter speed. The aperture and shutter speed for obtaining the optimum exposure can take various values. In a digital camera or the like, a diaphragm and shutter speed that provide optimum exposure are determined using a program diagram that defines the relationship between the diaphragm and shutter speed.

  However, since the aperture affects the depth of field and the shutter speed affects camera shake, etc., in recent years, in digital cameras and the like, a plurality of program lines corresponding to the field of view (subject and its background) are used. A figure is prepared, and an optimum program diagram is selected for shooting.

  For example, a program diagram for each shooting mode such as landscape mode, sport mode, portrait mode, close-up mode, standard mode, etc. is prepared, and better shooting is possible by selecting a shooting mode according to the scene I have to.

  Furthermore, a digital camera that automates selection of a shooting mode has also been proposed. For example, in Patent Document 1, the scene is divided into rectangular areas, integrated luminance values in each area are integrated, and the shooting mode is set to the sports mode when the amount of motion between frames exceeds a certain threshold. A digital camera to be set is disclosed.

Further, in Patent Document 2, the distance to each target subject within a viewable angle of view is measured, and the focal position and aperture diameter are set so that the measured blur amounts of all the target subjects are within a predetermined value. There has been proposed a photographing apparatus for adjusting the image.
JP 2003-319241 A JP 2007-199171 A

  However, in the proposal of Patent Document 1, it is only a determination as to whether or not it is a sports scene, and no consideration is given to the case where there are a plurality of subjects in the field of view, and optimal shooting is not necessarily performed. There was a problem.

  Further, in the proposal of Patent Document 2, there is a problem that the user needs to perform the distance measurement operation at least once in order to determine the blur amount, and the operation is complicated.

  The present invention automatically specifies the content of the object scene, uses existing image capturing parameters, and dynamically changes the image capturing parameters according to the object field, thereby easily performing optimal image capturing. An object of the present invention is to provide a photographing apparatus capable of performing the above.

  An imaging apparatus according to the present invention is identified by an imaging unit for imaging an object scene, an object identification unit for identifying an object included in the scene from an image captured by the imaging unit, and the object identification unit. Parameter determining means for dynamically calculating and determining shooting parameters used for shooting by the shooting means by combining the initial shooting parameters for each initial region including the center of each object.

  According to the present invention, the contents of the scene are automatically specified, and the existing shooting parameters are used, and the shooting parameters are dynamically changed according to the scene, so that the optimum shooting can be easily performed. It has the effect that it can be performed.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a photographing apparatus according to the first embodiment of the present invention. In FIG. 1, not all blocks are shown. For example, although not shown, a timing generator (SG) is also included, and all the blocks operate on the basis of horizontal and vertical signals based on the timing signal of the timing generator. Furthermore, a buffer memory for image clipping is also included. Furthermore, a three-dimensional noise reduction circuit and the like are not shown, but are also included.

  In FIG. 1, a control unit 10 such as a CPU controls the operation of each unit in the apparatus. The storage unit 9 temporarily stores various data necessary for the control process of the control unit 10, and is realized by, for example, a DDR memory or its controller. The control unit 10 controls each unit via the bus 20 and also controls data transfer via the bus 20 of each unit.

  The photographing unit 11 includes a sensor, a lens, a lens, a motor for focus control, and the like (not shown). The photographing unit 11 converts an optical image of the object scene into an electric signal and outputs it to the data input processing unit 12. The parameters at the time of shooting are transmitted from the shooting mode setting unit 37 described later via the data input processing unit 12. The data input processing unit 12 processes an electrical signal from the photographing unit 11 and outputs an image signal, and can adjust the aperture and shutter speed by driving control of various motors of the photographing unit 11. . Some parameters of the aperture and shutter speed are transmitted via the bus 20 from a shooting mode setting unit 37 described later.

  The image signal from the data input processing unit 12 is given to the data preprocessing unit 13. The data preprocessing unit 13 performs correction of defective pixels of the sensor, noise reduction filter processing, pixel interpolation (demosaicing), coordinate conversion from RGB space to YUV space, AE, for the image signal from the data input processing unit 12. Data accumulation for AF and WB adjustment is performed. The image signal from the data preprocessing unit 13 is supplied to the display / audio control unit 14 for display (the processing block of the audio data is not shown) and also supplied to the recording control unit 17 for recording. The

  The display / audio control unit 14 performs image processing for display on the image signal from the data preprocessing unit 13 and outputs the image signal to the display unit 15. The display unit 15 is configured by an LCD, for example, and displays a still image or a moving image based on an image signal from the display / audio control unit 14. An external output circuit that outputs data from a recording control unit to be described later to the outside is also included (digital data before analogization of the display unit 15 and the speaker 16 is different from data output externally). Further, the display / audio control unit 14 has an OSD (on-screen display) circuit (not shown) so that on-screen display can be performed on the display unit 15.

  The display / audio control unit 14 is also given an audio signal from a microphone (not shown), and the display / audio control unit 14 performs predetermined audio processing on the input audio signal and outputs it to the speaker 16. . The speaker 16 outputs sound based on the audio signal from the microphone.

  The recording control unit 17 performs image processing for recording, for example, image compression processing, on the image signal from the data preprocessing unit 13 and outputs the image signal to the image storage unit 18 and the external recording medium 19. Although not shown here, there is also a dedicated circuit for performing image processing compression. The image storage unit 18 is constituted by, for example, a built-in hard disk (HDD), and stores an image signal from the recording control unit 17. The external recording medium 19 is configured by a recording medium such as an SD memory, for example, and stores an image signal from the recording control unit 17.

  In the present embodiment, a circuit for specifying the content of the object scene is provided in order to set a shooting parameter corresponding to the object scene. An edge emphasis circuit 31 is employed for preprocessing of image recognition of the object scene. Data from the data pre-processing unit 13 is supplied to the edge enhancement circuit 31, and the edge enhancement circuit 31 performs edge enhancement processing on an image obtained by photographing. The processing is performed for each frame, and in this example, the storage unit 9 is accessed, but a dedicated storage unit may be used by using a DDR memory. The output of the edge enhancement circuit 31 is given to the object identification circuit 32.

  The edge emphasis circuit 31 emphasizes the contour of the object in the object scene, and the object can be easily identified by the contour of the object. The object information / parameter database 33 stores feature information related to the contour of the object. The objects whose feature information is stored in the object information / parameter database 33 include not only a person but also other kinds of animals, plants, buildings, landscapes, and the like. The object identification circuit 32 identifies each object in the scene by comparing the image information from the edge enhancement circuit 31 with the feature information stored in the object information / parameter database 33. The object information / parameter database 33 may also be used as the image storage unit 18 or the external recording medium 19.

  The object identification circuit 32 outputs information on each object identified by image recognition of the object scene and information on the size of the object in the object scene to the object occupation ratio calculation circuit 34. The object occupancy rate calculation circuit 34 calculates the ratio of the area occupied by the entire object field (object occupancy rate) for each object in the object field, and outputs it to the parameter determination circuit 35 together with information related to the object.

  The parameter determination circuit 35 obtains an existing shooting parameter (hereinafter referred to as an initial shooting parameter) by dynamically calculating and determining the shooting parameter according to the content of the entire scene. Initial imaging parameters are stored in the object information / parameter database 33. The object information / parameter database 33 stores parameters corresponding to various shooting modes as initial shooting parameters. For example, the shooting mode includes a portrait mode, a landscape mode, a sports mode, a close-up mode, a standard mode, and the like. The object information / parameter database 33 holds information on the correspondence relationship between the object type and the shooting mode, and creates a database of shooting parameters that statistically consider the state of the object such as color and size for each shooting mode. Hold.

  The parameter determination circuit 35 is provided with information on each object in the object scene and information on the object occupancy rate from the object occupancy rate calculation circuit 34. Based on these pieces of information, the parameter determination circuit 35 dynamically calculates and determines shooting parameters corresponding to the object scene by combining the initial shooting parameters of each shooting mode with appropriate weighting. Get by.

  That is, the parameter determination circuit 35 first determines the initial shooting parameters of the shooting mode used for combining shooting parameters based on the types of objects in the object scene. For example, when a person and a mountain are recognized as objects in the object scene, the parameter determination circuit 35 uses two of an initial shooting parameter in the person mode and an initial shooting parameter in the landscape mode. Then, the parameter determination circuit 35 weights the initial shooting parameters of the existing shooting mode according to the object occupancy rate of each object in the object scene. For example, when the object occupancy ratios of the person and the mountain in the scene are 50% and 20%, respectively, the weight of the initial shooting parameter in the portrait mode is set to be relatively large, and the weight of the initial shooting parameter in the landscape mode is increased. Is made relatively small.

  Further, the parameter determination circuit 35 may change the synthesis weight according to the position of each object in the object scene in the object scene. For example, when the object is located near the center of the object scene, the weight of the initial shooting parameter suitable for the object may be sufficiently increased. Further, the parameter determination circuit 35 may determine the shooting parameter only with the object at the center of the object scene.

  The parameter determination circuit 35 may have a learning function for supplying the determined shooting parameter to the object information / parameter database 33 and updating the existing initial shooting parameter.

  The parameter determination circuit 35 can also prevent raindrops, dust, dust, and the like (which are attached to the lens of the photographing unit 11) having a sufficiently small object occupancy rate from being handled as objects.

  The parameter determination circuit 35 supplies the determined shooting parameter to the shooting mode setting unit 37 via the input conversion circuit 36. The shooting mode setting unit 37 generates a signal for controlling the aperture and shutter speed according to the shooting parameters. Depending on the setting of the shooting mode setting unit 37, the data input processing unit 12 adjusts the aperture and shutter speed. The input conversion circuit 36 converts the shooting parameters into data that can be processed by the shooting mode setting unit 37.

  A user interface circuit (hereinafter abbreviated as a user IF circuit) 38 is an interface circuit including buttons and the like operated by the user, and includes a circuit that processes setting values of manual settings in normal camera processing described later. The user can switch the set value by operating a button or the like.

  The control unit 10 can cause the display unit 15 to display a moving image or a still image shot using the shooting parameter determined by the parameter determination circuit 35. In addition, the control unit 10 can display information on the imaging parameters on the display unit 15 by on-screen display. In this case, when an instruction operation for resetting the shooting parameter is performed by a user on an operation unit (not shown), the control unit 10 executes the reset mode for resetting the shooting parameter to each unit. It can be instructed.

  Next, the operation of the present embodiment configured as described above will be described with reference to FIGS. FIG. 2 is a flowchart for explaining the operation of the present embodiment. FIG. 3 is an explanatory diagram showing the concept of object recognition. FIG. 4 is an explanatory diagram for explaining an object recognized in the object scene and an object occupancy rate. 5 and 6 are tables for explaining how to obtain the imaging parameters. FIG. 7 is a program diagram showing the shooting parameters, with the horizontal axis representing the shutter speed and the vertical axis representing the aperture value. FIG. 7A shows the initial shooting parameters, and FIG. The imaging parameters newly set based on the initial imaging parameters of a) and the contents of the object scene are shown.

  In step S1 of FIG. 2, the control unit 10 determines whether it is an auto mode in which exposure is automatically determined or a user mode in which the user determines exposure by manual operation. If the user mode is set, the control unit 10 shifts the process to step S20 and performs normal camera processing. That is, in this case, the aperture and shutter speed are determined based on a user operation on an operation unit (not shown).

  Assume that the auto mode is set. In this case, the control unit 10 determines whether or not the reset mode is set in the next step S2. If the reset mode is not set, the control unit 10 shifts the process to step S6 to execute an object recognition process.

  The edge enhancement circuit 31 enhances the edge of the captured image. The object identification circuit 32 selects one of the objects in the object scene (step S6). As illustrated in FIG. 3, the object identification circuit 32 specifies a region (broken line) occupied by an object from a picture 41 with an emphasized outline. The occupied area of the object is configured to be a minimum rectangle including the center point C of the object. Further, the object in the rectangle is compared with the feature information stored in the object information / parameter database 33, and the object identification circuit 32 identifies what the identification target object is (step S7). This operation is performed on each area 42 (step S10). The object identification circuit 3 outputs information about the identified object and its rectangular area (or may be information that can specify an area such as vertical, horizontal length, diagonal length, etc.) to the object occupancy rate calculation circuit 34.

  Note that when the information on the position of the object to be identified in the object scene is used to calculate the shooting parameter, the object identification circuit 32 also obtains the coordinate information of the identified object and outputs it to the object occupancy rate calculation circuit 34. To do. This is because the angle of the photographing apparatus is generally set so that the object to be photographed exists at the center of the object scene. The central area of the object scene is, for example, a rectangle that forms a quarter of the total area of the object scene arranged at the center of the object scene (area 48 in FIG. 4). The rate at which the object is in this region can also be easily calculated from the position coordinates, and the rate of the weight itself may be changed accordingly. The object occupancy rate calculation circuit 34 obtains the ratio of the area occupied by the identified object in the entire object scene (step S8). The object identification circuit 32 outputs the obtained object information, object occupancy, and coordinate information to the parameter determination circuit 35.

  In step S9, the parameter determination circuit 35 determines a weight for calculating the shooting parameter. For example, it is assumed that two objects 46 and 47 exist in the object scene 45 as shown in FIG. It is assumed that the object 46 is “flower” and the object 47 is “dog”. In the example of FIG. 4, the object 46 has a sufficiently large object occupation ratio as compared with the object 47. Therefore, in this case, the parameter determination circuit 35 gives a relatively large weight to the initial shooting parameters in the shooting mode suitable for shooting the flower of the object 46. Conversely, the parameter determination circuit 35 assigns a relatively small weight to the initial shooting parameters in the shooting mode suitable for shooting the dog of the object 47. In this example, the contribution of the parameters when using the information of the position of the object to be identified in the scene is large for dogs (although the occupied area is small) due to the large percentage of the center of the scene. The ratio of flowers is small. In this case, the parameter may be calculated using, for example, the product of the occupation ratio (areas of the regions 47 and 46) and the ratio located at the center of the object scene.

  FIG. 5 shows photographing modes employed for each object in the object scene. Note that the information in the parentheses in FIG. 5 indicates information used for determining the shooting mode to be selected. As shown in FIG. 5, the parameter determination circuit 35 employs the initial shooting parameters in the person mode when the object in the object scene is a person or an animal. In this case, the parameter determination circuit 35 may determine whether to adopt the person mode based on the area of the object and whether it is located in the center of the object scene.

  Similarly, the parameter determination circuit 35 adopts the initial shooting parameters in the sports mode when the object is a fast moving object such as a car, a racket, or a ball. In this case, the parameter determination circuit 35 may determine whether to adopt the sport mode based on the amount of movement of the object.

  Further, the parameter determination circuit 35 adopts the initial shooting parameters in the landscape mode when the object is a landscape such as a mountain, a river, or a building. Further, the parameter determination circuit 35 adopts the initial shooting parameters in the night view mode when the object is a night view. In this case, the parameter determination circuit 35 may determine whether to adopt the night view mode based on the contrast of the object.

  The parameter determination circuit 35 adopts the initial shooting parameters in the close-up mode when the object is a flower, an insect, or the like. In this case, the parameter determination circuit 35 may determine whether or not to adopt the close-up mode based on the area of the object and whether or not it is located at the center of the object scene.

  In the next step S10, the control unit 10 determines whether or not the selection of the initial shooting parameters used for object recognition and synthesis and the weighting process have been completed for all objects in the object scene. If not completed, the processes in steps S6 to S9 are repeated.

  When the processing for all the objects is completed, in the next step S11, the parameter determination circuit 35 determines the shooting parameters. Now, for example, assume that the identification result shown in FIG. 6 is obtained for each object in the object scene. That is, the object scene shown in FIG. 6 includes “persons 1 and 2”, “mountain”, and “building”. “Person 1” is located in the center of the object scene, and the object occupation ratio is 50%. The parameter determination circuit 35 applies the initial shooting parameter of the person mode to the “person 1” and sets the weight to double. The “mountain” is located in the entire object scene, and the object occupation ratio is 20%. The parameter determination circuit 35 applies the initial shooting parameter of the landscape mode to the “mountain” and sets the weight to 1 time. “Bill” is located at the edge of the object scene, the object occupancy is 10%, and “Person 2” is located at the edge of the object, and the object occupancy is 20%. The parameter determination circuit 35 applies the initial shooting parameters of the landscape mode and the person mode to these “building” and “person 2”, respectively, and sets the weight to 1 time. As described above, in the example of FIG. 6, the contribution of the parameters of the person mode is set large in order to photograph the person located at the center more beautifully. In this example, if it is at the center of the object scene, it is simply doubled and does not take into account the ratio at the center as shown in Fig. 4 (example of dog and flower). Is less.

For example, the parameter determination circuit 35 weights the object occupancy and synthesizes the initial photographic parameters of each mode at a rate according to the object occupancy, thereby obtaining the imaging parameters. In the example of FIG. 6, since the weight of “person 1” is double, the calculation is performed assuming that the object occupancy is 100%. Therefore, the occupation ratio of the person mode by “persons 1 and 2” is 120% in total. That is, the shooting parameters in the example of FIG. 6 are given by shooting parameter = {(portrait mode shooting parameter * × 1.2) + (landscape mode shooting parameter * × 0.3)} / 1.5.
The parameters marked with * are obtained from each program diagram.

  Now, it is assumed that the imaging information indicated by the program diagram shown in FIG. 7A is stored in the object information / parameter database 33. FIGS. 7A and 7B show an example in which the brightness of the subject changes along the horizontal axis. For example, in the standard mode of FIG. 7A, for a subject with relatively low brightness, the aperture is set to open (the aperture value is decreased), and the shutter speed is increased as the brightness increases. In the standard mode of FIG. 7A, when the brightness becomes brighter and the shutter speed reaches the camera shake limit, the aperture value is changed to be increased while suppressing the increase of the shutter speed. Further, in the landscape mode, the aperture is set to a narrow aperture (a larger aperture value) in order to focus on the landscape.

  Here, based on the analysis result of the object in the object scene, the parameter determination circuit 35 is set to 0% (background) of the initial shooting parameter in the night view mode, 35% (background) of the initial shooting parameter in the landscape mode, and the sports mode. Assume that 5% of the initial shooting parameters and 60% (center) of the initial shooting parameters in the portrait mode are combined to newly set the shooting parameters. In this case, the imaging parameter given by the program diagram shown by the solid line in FIG. 7B is obtained.

  That is, when one of the existing fixed parameters is selected, shooting is performed by applying the shooting parameter of the person mode, whereas in the present embodiment, the shooting parameter of the person mode and the landscape mode are selected. The parameter setting is performed in consideration of both the shooting parameters.

  In this way, the optimum shooting parameter corresponding to the contents of the object scene can be obtained.

  The shooting parameters determined by the parameter determination circuit 35 are supplied to the shooting mode setting unit 37 via the input conversion circuit 36. The shooting mode setting unit 37 controls the data input processing unit 12 based on the newly set shooting parameters. Thereby, imaging based on the imaging parameter determined by the parameter determination circuit 35 is performed. In step S12, the control unit 10 causes the display unit 15 to display a moving image or a still image captured based on the newly set imaging parameter.

  The user looks at the display on the display unit 15 to determine whether or not the newly set shooting parameter is suitable. When the user performs an operation indicating that the newly set shooting parameter is suitable using an operation unit (not shown), the process proceeds to step S14, and the parameter determination circuit 35 sets the determined shooting parameter. The recorded contents are updated by giving to the object information / parameter database 33.

  When the user performs an operation indicating that the newly set shooting parameter is not suitable using an operation unit (not shown), the process shifts to the reset mode and the process returns to step S1.

  In this case, the process proceeds from step S2 to step S3, and it is determined whether or not there is a user adjustment operation. In the reset mode, there are a partially automatic reset mode in which the user manually performs part of the setting operation and a fully automatic reset mode in which all of the settings are automatically performed.

  When there is no user adjustment operation, the fully automatic resetting mode is set. In the fully automatic reset mode, the parameter determination circuit 35 resets the imaging parameters according to a predetermined rule. For example, the parameter determination circuit 35 changes the weighting value based on the object occupancy rate and the position of the object. Thereafter, new imaging parameters are reset by repeating the processes in steps S6 to S11.

  When there is a user's adjustment operation, a partial automatic reset mode is set. In the partial automatic reset mode, the user can manually set one of the aperture value and the shutter speed, for example. In the partial automatic reset mode, the other parameter is determined by the parameter determination circuit 35 without changing the setting value by the user. Thereafter, new imaging parameters are reset by repeating the processes in steps S6 to S11.

  As described above, in the present embodiment, an object in the object scene is specified using the database that stores the feature information of the object, and each object is determined based on the type, position, and size of the object in the object field. A mode and its weight corresponding to are set, and a new shooting parameter is obtained by combining the modes. As a result, it is possible to dynamically obtain optimal shooting parameters according to the contents of the object scene, and to perform optimal shooting without requiring a complicated operation by the user. Further, a fully automatic reset mode and a semi-automatic reset mode are provided, and the user's preference can be reflected more by reflecting the user's setting operation in the shooting parameter database.

  By rewriting the database in this way, user preferences can be reflected. For example, for the same object scene, the same shooting parameters as in the previous resetting are adopted, and shooting using the shooting parameters desired by the user becomes possible.

  In the above embodiment, the weight is determined based on the object occupancy rate, but the weight may be determined based on information other than the object occupancy rate. For example, the weight may be determined by a luminance value, a histogram, a cumulative histogram, or the like.

  In the above embodiment, the example using the object information / parameter database 33 built in the storage of the feature information and the initial photographing parameters has been described. However, an external recording medium may be used.

  FIG. 8 is a block diagram showing a second embodiment of the present invention. In FIG. 8, the same components as those in FIG.

  In the present embodiment, the shooting parameters obtained from the object scene of each frame are averaged so that the shot image does not feel uncomfortable between consecutive frames during moving image shooting.

  This embodiment differs from the first embodiment in that a storage unit 51 is added. The parameter determination circuit 35 gives the storage parameters determined based on the contents of the object scene of each frame to the storage unit 51, and reads and averages the shooting parameters stored in the storage unit 51. The parameter determination circuit 35 outputs the averaged shooting parameters as parameters used at the time of shooting.

  Other configurations and operations are the same as those in the first embodiment.

  In the present embodiment, the same effects as those of the first embodiment can be obtained, and it is possible to prevent a sense of incongruity between frames during moving image shooting.

  In the first embodiment, a time axis filter (three-dimensional noise filter) is employed, and the captured image data is subjected to filter processing with respect to the time axis with respect to the captured image data. It is possible to perform processing that eliminates a sense of discomfort between frames in the form. In general, it is not another embodiment of the second embodiment, and can be used together.

  Each function described in each of the above embodiments may be configured using hardware, or may be realized by software by reading a program describing each function into a computer. Each function may be configured by appropriately selecting either software or hardware.

1 is a block diagram showing a photographing apparatus according to a first embodiment of the present invention. 6 is a flowchart for explaining the operation of the embodiment. Explanatory drawing which shows the concept of object recognition. Explanatory drawing for demonstrating the object recognized in an object field, and an object occupation rate. A chart for explaining how to obtain shooting parameters. A chart for explaining how to obtain shooting parameters. The program diagram which shows a photography parameter by taking a shutter speed on a horizontal axis and taking an aperture value on a vertical axis. The block diagram which shows the 2nd Embodiment of this invention.

Explanation of symbols

    DESCRIPTION OF SYMBOLS 10 ... Control part, 11 ... Image pick-up part, 12 ... Data input process part, 14 ... Display / voice control part, 17 ... Recording control part, 31 ... Edge emphasis circuit, 32 ... Object identification circuit, 33 ... Object information / parameter Database, 34 ... object occupancy rate calculation circuit, 35 ... parameter determination circuit.

Claims (10)

Photographing means for photographing the object scene;
Object identifying means for identifying an object included in the object scene from an image photographed by the photographing means;
Parameter determining means for dynamically calculating and determining shooting parameters used for shooting by the shooting means by combining the initial shooting parameters for each minimum area including the center of each object identified by the object identification means; An imaging device characterized by that.   2. The parameter determination unit according to claim 1, wherein the parameter determination unit obtains the shooting parameter by weighting and combining the initial shooting parameters according to an area occupied by each object in the object scene. The imaging device described.   3. The parameter determination unit according to claim 1, wherein the parameter determination unit obtains the shooting parameter by adding a weight to each initial shooting parameter according to the position of each object in the scene. The imaging device described in 1.   The parameter determination means, when each object is located near the center of the object scene, increases the weight assigned to each initial shooting parameter compared to the case where the object is located at another position. The imaging device according to claim 3.   2. The photographing apparatus according to claim 1, further comprising means for updating the initial photographing parameter with the photographing parameter obtained by the parameter determining means.   The photographing apparatus according to claim 1, further comprising a storage unit that stores the initial photographing parameters.   2. The photographing apparatus according to claim 1, further comprising a display unit that displays an object scene photographed by the photographing unit based on the photographing parameter obtained by the parameter determining unit. An object identification procedure for identifying an object included in the scene by an image recognition process from an image of the scene captured by the imaging apparatus;
Parameter determination is performed by a parameter determination circuit that dynamically calculates and determines shooting parameters used for shooting by the shooting apparatus by combining and calculating initial shooting parameters in a region including the center of each object identified by the object identification procedure. An imaging parameter determination method comprising: a procedure. A display procedure for displaying an object scene imaged based on the imaging parameters determined in the parameter determination procedure;
The imaging parameter determination method according to claim 8, further comprising: a parameter re-determination procedure that obtains the imaging parameters by performing a composition operation on the initial imaging parameters again based on a user operation.   The imaging parameter determination method according to claim 9, wherein the parameter redetermination procedure obtains only imaging parameters other than some imaging parameters based on the user operation.

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