CN101359150B - Image capturing apparatus and control method therefor - Google Patents
Image capturing apparatus and control method therefor Download PDFInfo
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- CN101359150B CN101359150B CN2008101354192A CN200810135419A CN101359150B CN 101359150 B CN101359150 B CN 101359150B CN 2008101354192 A CN2008101354192 A CN 2008101354192A CN 200810135419 A CN200810135419 A CN 200810135419A CN 101359150 B CN101359150 B CN 101359150B
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Abstract
The invention relates to an image device and a control method. The present invention further improves operability related to setting the position and size of a focus detection region. An image capturing apparatus of the invention is provided with an image sensor that photo-electrically converts an object image formed by an optical lens, a focus detection unit that detects the focus state of the object image using an image signal from a focus detection region that is a region that is a portion within a frame of the image sensor, a setting unit that sets one focus detection mode from among a plurality of focus detection modes in which the size and position of the focus detection region within the frame differ, and a storage unit that stores a focus detection region size and position for each of the plurality of focus detection modes.
Description
Technical field
The present invention relates to the technology of auto in the picture pick-up device.
Background technology
Numeral stillcamera and digital video camera are to adopt CCD or cmos sensor etc. can carry out the example of picture pick-up device of the imageing sensor of opto-electronic conversion.In these cameras, do not have standalone sensor to carry out focus detection, and, realize that system simplification, cost reduce and size reduces by using in order to the imageing sensor of taking rest image or moving image as focus detection sensor.
Under the situation of imageing sensor that use is used to take as the structure of focus detection sensor, adopt TV AF system usually, in this system, be in the lens location of focusing according to the data frequency composition search of reading from imageing sensor.In this system, use image processing circuit to extract the frequency content of the view data that goes out since image reading sensor, and can according to expectation the zone of being extracted be set according to the standard of image processing circuit.
When utilizing camera rest image or moving image, suppose that photographer will make a video recording by operate camera, thereby make main subject be in the center of picture.Usually, in the AF operation, frequency content is set extracts zone and focus detection zone, thereby near the center of picture, carry out focus detection.Yet, can imagine also to have such a case, in this case, photographer's shooting intention is not limited to the center that main subject is configured in picture, but photographer is intended to take the image that main subject is configured in the edge of picture.In order to satisfy this class demand, the camera that has proposed to have following pattern: the focus detection zone is fixed on the focus detection pattern at center of picture and the pattern (referring to Japanese kokai publication hei H7-283994 communique) that the focus detection zone can be moved to desired locations.
In addition, a kind of like this user interface has been proposed, in this user interface, as in the Japanese kokai publication hei H7-283994 communique, be provided with in the camera of a plurality of focus detection patterns, can switch the focus detection pattern simply, and select focus detection zone (referring to TOHKEMY 2006-39203 communique).Traditionally, existed be provided with the focus detection zone be fixed near the center the focus detection pattern and with the camera of focus detection area configurations in the focus detection pattern of desired locations.On the other hand, in order to satisfy the user's request of wider scope, expect that a kind of being provided with can be with the camera of focus detection area configurations in a plurality of focus detection patterns of desired locations.Yet, in this case, supposed about positional information and the size information of storage and will go wrong by the focus detection zone of user's selection.
For example, suppose in the focus detection Mode A, after the left hand edge of position configuration, take, thereby make the focus detection position become the best for specific imaging conditions at picture with the focus detection zone.Then, suppose in the focus detection Mode B, wish after the right hand edge of position configuration, to take, thereby make the focus detection position become the best for another imaging conditions at picture with the focus detection zone.At this moment, in the focus detection Mode B, also reflect the position in the focus detection zone of appointment in the focus detection Mode A, therefore do not have to generate the pinpointed focus surveyed area information that is used to distinguish imaging conditions that this is disadvantageous for the user.
In addition, when a plurality of AF frame is set,, then shows to become chaotic, thereby also be difficult in the view finder picture, confirm subject if on the view finder picture, show all AF frames all the time.Along with the increase of AF frame quantity, see that subject becomes more difficult.Yet,, can not confirm the position of focus adjustment region if do not show the AF frame.
Summary of the invention
Consider that the problems referred to above make the present invention, and the objective of the invention is further to improve and position that the focus detection zone is set and big or small relevant operability.
In order addressing the above problem, and to realize this purpose, according to a first aspect of the invention, to provide a kind of picture pick-up device, comprising: imageing sensor is used for the subject image that opto-electronic conversion is formed by optical lens; Focus detecting unit is used to use the picture signal from the focus detection zone, detects the focus state of described subject image, and wherein said focus detection zone is the zone as the part in the picture of described imageing sensor; The unit is set, be used in described picture, being provided with under the multiple spot focus detection pattern in a plurality of focus detection zone, by the size in a plurality of focus detection zone and at least one in the position are changed together as a group in a plurality of focus detection zone, the focus detection zone is set, in described picture, be provided with under the single-point focus detection pattern in a focus detection zone, size by changing a focus detection zone and at least one in the position are provided with the focus detection zone; And storage unit, be used for respectively to the situation of described multiple spot focus detection pattern and the situation of described single-point focus detection pattern, store the size in described focus detection zone and at least one in the position separately, wherein, the described unit that is provided with carries out described setting in pattern is set, when being provided with in described size and the described position at least one by the described unit that is provided with, and it is described when pattern being set finishing, the size in the described focus detection of described cell stores zone and at least one in the position, and the described unit that is provided with is opened when entering shooting state from closing to become at the power supply that makes described picture pick-up device, perhaps when the playback mode of photographic images switches to shooting state, when switching to shooting state after perhaps in the body that described optical lens is accommodated in described picture pick-up device, if described picture pick-up device is judged as last time not variation between subject information in the taking subject information in taking with this, and do not change between the placement information during the placement information in last time taking and this are taken, then when this is taken, use the previous size that is stored in the described focus detection zone in the described storage unit that is provided with and at least one in the position.
In addition, according to a second aspect of the invention, a kind of method that is used to control picture pick-up device is provided, described picture pick-up device is provided with the imageing sensor of the subject image that opto-electronic conversion forms by optical lens, said method comprising the steps of: the focus detection step, be used to use the picture signal from the focus detection zone, detect the focus state of described subject image, wherein said focus detection zone is the zone as the part in the picture of described imageing sensor; Step is set, be used in described picture, being provided with under the multiple spot focus detection pattern in a plurality of focus detection zone, by the size in a plurality of focus detection zone and at least one in the position are changed together as a group in a plurality of focus detection zone, the focus detection zone is set, in described picture, be provided with under the single-point focus detection pattern in a focus detection zone, size by changing a focus detection zone and at least one in the position are provided with the focus detection zone; And storing step, be used for respectively under the situation of the situation of described multiple spot focus detection pattern and described single-point focus detection pattern, store the size in described focus detection zone and at least one in the position, wherein, be provided with in the step described, in being set, pattern carries out described setting, in described storing step, when being provided with in described size and the described position at least one by the described step that is provided with, and it is described when pattern being set finishing, store the size in described focus detection zone and at least one in the position, and be provided with in the step described, open when entering shooting state from closing to become at the power supply that makes described picture pick-up device, perhaps when the playback mode of photographic images switches to shooting state, when switching to shooting state after perhaps in the body that described optical lens is accommodated in described picture pick-up device, if described picture pick-up device is judged as last time not variation between subject information in the taking subject information in taking with this, and do not change between the placement information during the placement information in last time taking and this are taken, then when this is taken, use the size in the previous described focus detection zone of in described storing step, storing that is provided with and at least one in the position.
By below with reference to the explanation of accompanying drawing to exemplary embodiments, it is obvious that further feature of the present invention will become.
Description of drawings
Fig. 1 is the block diagram that illustrates according to the structure of the picture pick-up device of first embodiment of the invention;
Fig. 2 illustrates the outside drawing of the picture pick-up device (digital camera) of first embodiment;
Fig. 3 illustrates how the operation parameter selector switch is selected the focus detection zone;
Fig. 4 illustrates the transportable scope in focus detection zone;
Fig. 5 illustrates the transportable scope in focus detection zone;
Fig. 6 illustrates the image that how to utilize the static plant of camera that is fixed on the tripod;
Fig. 7 illustrates the Luminance Distribution of subject;
Fig. 8 illustrates the camera initiating sequence;
Fig. 9 A and 9B illustrate the process flow diagram that processing is returned in the focus detection setting;
Figure 10 A and 10B illustrate focus detection the process flow diagram that changes operation is set;
Figure 11 illustrates the process flow diagram of pressing release-push (SW1) operation afterwards;
Figure 12 A～12F illustrates from the sequence of screening-mode to the state-transition except that taking;
Figure 13 is the block diagram that the general structure of digital camera is shown;
Figure 14 is used to illustrate the position of change AF frame and the process flow diagram of the process of size;
Figure 15 is that the process flow diagram of processing is moved in the AF frame position that illustrates among Figure 14;
Figure 16 illustrates AF frame size to change the process flow diagram of handling;
Figure 17 A is illustrated in the AF frame method that shows the AF frame in the pattern is set;
Figure 17 B illustrates when the example that is provided with at the AF frame when having moved the AF frame in the pattern and shows;
Figure 17 C illustrates when the example that is provided with at the AF frame when having changed AF frame big or small in the pattern and shows;
Figure 18 A illustrates the method that shows the AF frame when being provided with the AF frame;
Figure 18 B illustrates the method that shows the AF frame when being provided with the AF frame after mobile AF frame;
Figure 18 C illustrates the method that shows the AF frame when being provided with the AF frame at mobile AF frame and after changing the size of AF frame;
Figure 19 illustrates AF frame position and moves AF in the processing moving marginal position of frameing shift;
Figure 20 is that the process flow diagram of processing is moved in the AF frame position that illustrates among Figure 14;
Figure 21 is that the AF frame size that illustrates among Figure 14 changes the process flow diagram of handling.
Embodiment
Below, with preferred embodiment of the present invention will be described in detail by reference to the drawing.
First embodiment
Fig. 1 is the block diagram that the structure of the picture pick-up device (digital camera) according to first embodiment of the invention is shown.
In Fig. 1, Reference numeral 10 expression camera lenses, camera lens 10 is gathered exterior light.In Fig. 1, represent camera lens 10 with lens, but picture pick-up device can also be provided with the lens unit that is made of a plurality of lens.In addition, move forward and backward the position of camera lens along optical axis, can adjust focus (focusing state), and can adjust visual angle (angle of view) by utilizing lens driving circuit 42.In addition, can adopt a kind of like this structure: based on the camera-shake amount of utilizing camera-shake amount testing circuit 44 to detect, can drive camera lens on the direction of eliminating camera-shake, to change optical axis by utilizing camera-shake correcting circuit 40, carry out the photographic camera jitter correction.Camera-shake amount testing circuit 44 comprises gyro sensor (gyro-sensor).In Fig. 1, realize the camera-shake correction by driving camera lens, but can also proofread and correct camera-shake in the same manner by driving imageing sensor 16 (being CCD in the present embodiment).Can also adopt a kind of like this system, in this system, the lens barrel unit that comprises camera lens stretches out in camera body and withdraws, and therefore (when taking in camera lens) provides portable by dwindling body volume when not using camera.
Utilize aperture 14 to adjust the light quantity of passing camera lens.System, control circuit 60 is by controlling aperture 14 to the 26 transmission aperture control informations of aperture driving circuit.Utilize serial communication or pulse signal etc. to carry out, and adopt proper method according to the standard of aperture driving circuit 26 from the transmission of system, control circuit 60 to the control information of aperture driving circuit 26.Aperture 14 can be the iris (iris aperture stop) that is made of a plurality of blades or in advance plate be got the circular iris in the hole of various diameters.System, control circuit 60 uses apertures 14 and aperture driving circuit 26 to control, thereby stop down is reducing light quantity when subject brightness is high, and when subject brightness is hanged down, and opens aperture more how to enter light.
System, control circuit 60 is by controlling mechanical shutter 12 to the 28 transmit machine shutter control informations of mechanical shutter driving circuit.Time shutter when the opening/closing time by mechanical shutter 12 is determined to take rest image, and 60 pairs of these times of system, control circuit judge, indicate mechanical shutter driving circuit 28 then.
Receive the light that has passed camera lens 10, mechanical shutter 12 and aperture 14 by imageing sensor 16, and light is carried out opto-electronic conversion.System, control circuit 60 is by coming control chart image-position sensor 16 to TG (Timing Generator, timing generator) 24 images sensor control signals.Utilize serial communication or parallel bus communication etc. to carry out, and adopt suitable method according to the standard of TG 24 from the transmission of system, control circuit 60 to the control information of TG 24.TG 24 drives imageing sensor 16 based on the control information that receives from system, control circuit 60.Imageing sensor 16 periodically carries out exposure sensor and reads the work of the data that obtained by exposure, and carries out this work based on the drive signal from TG24.Utilize imageing sensor 16 by the signal that obtained of exposure in, only can read the signal in the zone of the row of appointment or appointment.This can change the mode of reading and be achieved by utilizing from the gating pulse of reading of TG 24 outputs.System, control circuit 60 is determined best reading method according to condition, and indication TG24 uses this method.For example, use different reading methods, thereby when taking rest image, all data of reading imageing sensor 16, and using electronic viewfinder or during at the taking moving image are by getting the row that (decimation) only reads appointment according to condition.This is because when taking rest image, require high resolving power, and when the taking moving image, require high frame frequency, as 30 per seconds or 60 per seconds.
In addition, TG 24 can control the time shutter of imageing sensor 16.Can be by carrying out this control from TG 24 to imageing sensor 16 output drive signals in the timing of expectation, thus the electric charge that charges by sensor discharged.
The picture signal of reading from imageing sensor 16 is passed CDS (CorrelatedDouble Sampler, correlated-double-sampling device) circuit 18.CDS circuit 18 mainly plays following effect: use the correlated-double-sampling method to remove the noise in image data composition.Utilize PGA (Programmable Gain Amplifier, programmable gain amplifier) circuit 20 come the signal level of picture signal decayed/amplify thereafter.System, control circuit 60 is by controlling amplification quantity to PGA circuit 20 transmission amplification levels.Utilize serial communication or parallel bus communication etc. to carry out, and adopt proper method according to the standard of PGA circuit 20 from the transmission of system, control circuit 60 to the control information of PGA circuit 20.Usually, by utilizing aperture 14 exposure to imageing sensor 16 is set suitably, and utilizes shutter that the time shutter suitably is set, realize the correct exposure of imageing sensor 16.Yet, decay/amplify by utilizing 20 pairs of picture signals of PGA circuit, can realize changing virtually the effect of the exposure of picture signal.This can provide function to the user under the sensitivity notion, a conditions of exposure during as suitable with shutter speed with aperture the shooting.
Utilize A/D (analog/digital) converter 22 that picture signal is become digital signal from analog signal conversion.According to device, the bit width of digital signal can be 10,12 or 14 etc., and with the described image processing circuit 50 in back be configured to can with polytype bit width compatibility.In Fig. 1, CDS circuit, PGA circuit and A/D converter circuit are expressed as autonomous block respectively, but can also adopt the structure of these function setting in an IC bag.
View data after A/D converter 22 digitizings is input to image processing circuit 50.By a plurality of composing images treatment circuits 50, and image processing circuit 50 is realized various functions.
In addition, image processing circuit 50 is provided with the function of the frequency content of only extracting the signal of reading from imageing sensor 16, and therefore (auto focus AF) can use image processing circuit 50 during control carrying out automatic focusing.Following function is provided: setting is some regional frequency contents of extracting the data of reading from imageing sensor 16, still cuts apart this zone.When carrying out this AF processing, can suitably drive imageing sensor 16 to carry out focus detection.Under the situation of the TV AF that uses imageing sensor, need with driving speed (frame frequency) the driven in synchronism focusing lens of imageing sensor, therefore can drive focusing lens more quickly along with the increase of the driving speed of imageing sensor.Therefore, only fast thereby drive imageing sensor 16 in AF drive speed.On the contrary,, and read more pixel datas from imageing sensor by the frame frequency that slows down, can utilize 50 pairs of image processing circuits more multidata carry out frequency analysis, therefore more accurate focus detection becomes possibility.Preferably according to the screening-mode of camera and the suitably this use of definite imageing sensor of brightness of subject.
In addition, image processing circuit 50 is provided with following function: to being operated by the color effects of the amplification of A/D converter 22 digitized picture signals and this image etc., so image processing circuit 50 also plays the effect of the captured image quality in images of control.
When will be being input to image processing circuit 50 by the view data after A/D converter 22 digitizings, temporarily with this image data storage in interim memory 30.Can read the view data that temporarily is stored in the interim memory once more, thereby system, control circuit 60 can be with reference to this view data, and the view data of reading can be input to image processing circuit 50.In addition, the view data of utilizing image processing circuit 50 to carry out Flame Image Process can be write back to interim memory, perhaps the expected data from system, control circuit 60 can be written in this storer.
When outputing to the image display of forming by LCD etc. 108, the loaded with image data of utilizing image processing circuit 50 to carry out Flame Image Process can be advanced VRAM34, utilize D/A converter 36 to convert this view data to simulating signal then, and it is presented on the image display 108.When realizing electronic viewfinder, will sequentially be presented on the image display 108 from the consecutive image that imageing sensor 16 is read with update mode.Here, the structure that can adopt not an only frame or a plurality of frame to the image among the VRAM 34 to upgrade.Use this method for the image of the not quality decline when image display 108 outputs drive aperture.When loaded with image data being advanced among the VRAM 34, can be loaded with image data be advanced among the VRAM 34 with the mode of various display format compatibilities, for example, the Load Images data perhaps make to show a plurality of images on a plurality of pictures so that a unit of view data becomes big as much as possible in image display 108.
In image display 108, not only can display image, and can be separately or show the information of expectation together in company with image.The figure that can show the character information of that camera state, user are selected or shutter speed that camera is determined and f-number, sensitivity information etc. and utilize Luminance Distribution that image processing circuit 50 measures etc.Can also be according to the display position and the Show Color of expectation selection information.By the information that shows that these are different, can realize user interface.In addition, in image display 108, can show the view data that stores image storage medium 82 into.Under the situation of having compressed view data,, and it is loaded among the VRAM 34 by compression/de-compression piece 32 this view data that decompress.By D/A converter 36 this data-switching is become simulating signal, export this data then.
Reference numeral 70 is represented the camera operation unit, and the details of this camera operation unit will be described after a while.
Fig. 2 illustrates the outside drawing of the picture pick-up device (digital camera) 100 of first embodiment.Camera lens 10 is configured in the front of camera, so can on imageing sensor 16, forms the subject image.Strobe light unit 90 is configured on the face identical with camera lens 10.When main subject is dark, can strobe light unit 90 is luminous to obtain enough light quantities by making, even therefore under dark situation, also can obtain preferable image by keeping high shutter speed.In Fig. 2, camera lens 10 and strobe light unit 90 are configured on the identical faces, but this is not restriction; Light direct irradiation master subject for fear of flashlamp can also dispose the top of flashlamp towards camera.
Screening-mode change-over switch 110 can be switched between the camera operational mode of rest image screening-mode, moving image capture pattern and replay mode etc.In Fig. 2, screening-mode change-over switch 110 is expressed as the member that can switch between a plurality of patterns, but many rest image patterns for the special scenes the best that will take can also be provided, as landscape screening-mode or personage's screening-mode.
Utilize parameter selector switch 151,153,155,157 and 159, page scrolling during the captured image of the shooting condition the when user can select focus detection zone and metering mode etc. to take, playback and whole camera operation are provided with etc.In addition, can select opening/closing aforementioned electronic view finder.In addition,, image display 108 can also be configured to touch panel, therefore allow it to be used as input equipment in company with display image.
Release-push 104 is configured in the camera top.Release-push 104 is control members, and can realize two step pressing operations, comprises the shallow situation (SW2 operation) of pressing the situation (SW1 operation) of this button and pressing this button deeply.When utilizing camera to carry out automatic exposure control or automatic focusing control, by the shallow release-push 104 of pressing, carry out automatic exposure control and focusing control, as the preparation of taking, and, carry out the rest image shooting operation by pressing release-push 104 deeply.
Thereby operation automatic exposure control obtains suitable exposure in the screening-mode that utilizes screening-mode change-over switch 110 to select.Screening-mode comprises as at Portrait, landscape configuration and the night scene mode of the dedicated mode of specific shot body and as the automatic mode of common-mode.Also comprise for example Shutter speed priority pattern and aperture priority pattern; These are that the user specifies the shutter speed when taking and the pattern of f-number in advance.Utilize these patterns, the shooting sensitivity that utilizes PGA circuit 20 to be provided with can suitably be set automatically, perhaps the user can specify sensitivity in advance.When the user specified sensitivity in advance, because along with the signal to noise ratio (S/N ratio) of the increase picture signal of taking sensitivity will reduce, therefore the supposition expectation gave the preferential user of picture quality and will select low sensitivity.In addition, thus AF control can under each screening-mode, can suitably focus by blocked operation.For example, in landscape configuration, suppose, therefore can only in the zone of main subject, detect focus away from main subject.
Fig. 3 illustrates how operation parameter selector switch 151,155 and 159 is selected the focus detection zone.
The focus detection zone that 3a and 3b illustrate 9 focus detection patterns is provided with, and the situation about varying in size in focus detection zone is shown respectively.Equally, 3c and 3d illustrate the focus detection zone setting of single-point focus detection pattern.
By pressing focus detection mode switch button 155, can between 9 focus detection mode 3 a and 3b and 1 focus detection mode 3 c and 3d, switch.In Fig. 3, be illustrated in two kinds of patterns, promptly switch between 9 dot patterns and 1 dot pattern, but can also adopt a kind of like this structure, in this structure, provide the third and fourth focus detection pattern, and can between these patterns, switch.
The focus detection regional location changes button 151U, 151D, 151L and 151R corresponding to upper and lower a, left side and right, and by pressing each button, can be to desired locations moving focal point surveyed area 701,703,705 and 707 in the visual angle.In Fig. 3, employing can be specified four direction, that is, and and upper and lower, left and right control member, but the control member that can represent diagonal or various other angles can also be provided, therefore further improve operability.For each focus detection pattern, will be in storage inside storer 46 with the size in the focus detection zone of this mode operation parameter selector switch 151,155 and 159 appointments and location storage.Note, in Fig. 3, adopt a kind of like this structure, in this structure, under the situation of the big focus detection area size 3a under 9 focus detection patterns, this position can be moved, and under the situation of the little focus detection area size 3b under 9 focus detection patterns, this position cannot be moved.On the other hand, in 1 focus detection pattern, under the situation of big focus detection area size 3c and little focus detection area size 3d, can move this position, and no matter the focus detection area size how.
Figure 4 and 5 illustrate the transportable scope in focus detection zone.
Fig. 4 illustrates such a case: in multiple different focus detection patterns, the mobile range of the centre coordinate in each focus detection zone is limited.For the centre coordinate 713 in 1 focus detection zone 705 under the centre coordinate 711 in 9 focus detection zones 701 under 9 focus detection patterns and 1 the focus detection pattern both, moving area is identical.Therefore, 9 focus detection zones 701 movably scope are by line 731 region surrounded, and 1 focus detection zone 705 movably scope is by dotted line 733 region surrounded.
Fig. 5 illustrates such a case: in multiple different focus detection patterns, mobile range is subjected to the restriction of the housing in each focus detection zone.When for the housing moving area in the housing in 9 focus detection zones 701 and 1 focus detection zone 705 when identical, the mobile range of these two housings becomes by line 731 region surrounded.
As among Fig. 4 and Fig. 5, can come movably scope of sharp focusing surveyed area by centre coordinate or by housing.
Fig. 6 illustrates the image that how to utilize the static plant of camera that is fixed to tripod.
In Fig. 6, according to photographer's intention, thus the center of finding a view and deliberately making flower depart from picture.As mentioned above, although yet be not in picture center expectation in main subject and focus under the situation on the main subject, effectively use the focus detection zone is moved near the main subject function.Fig. 6 illustrates a kind of like this state: selected 9 focus detection patterns, dwindled the size in focus detection zone, and the position in focus detection zone has been moved to the left side of picture.
By adopting a kind of like this standard to make camera in usual the use, be easy to use: as mentioned above, after being provided with and having carried out taking, the focus detection zone that is being provided with the shooting condition that is suitable for particular type closes camera, when opening the power supply of camera then, the zone setting resets to last focus detection next time.Therefore, can adopt a kind of like this standard, in this standard, when opening the camera power supply, the focus detection zone is set to the center next time.Yet, when being provided with focus detection zone and subject, and close the camera power supply open the camera power supply then after expectation when utilizing the same terms to proceed to take, this standard is inappropriate.Therefore, can allow camera to judge whether camera is placed on the tripod etc., and judge whether subject has changed, and can whether return the focus detection zone according to condition judgment and be provided with.According to from the output that is used for the camera-shake testing circuit 44 that camera-shake proofreaies and correct whether less than predetermined value, judge whether that camera is installed in tripod etc. goes up (placement information).In addition, by Luminance Distribution and colour temperature, judge whether subject changes (subject information) based on the view data measurement image of reading from imageing sensor 16.Above-mentioned placement information in the time of will taking and subject information stores are in memory 46, and memory 46 is as placing information memory cell and subject information memory cell.
Under the situation that the camera as Fig. 6 is provided with, as shown in Figure 7, whole image is divided into a plurality of, measure the distribution of each piece, and the distributed store of measuring is the condition of the subject of the colored scene of shooting.When starting camera next time, measure the distribution of each piece equally, and, judge whether subject is identical with the position by comparing with the last distribution of having stored.
Fixed camera when thinking, and subject is when identical with the position, using the previous identical focus detection zone that is provided with to be provided with is very wise move.
Fig. 8 illustrates the camera initiating sequence.
Detect and press power supply opening/X button 102, and begin to start camera.When starting, camera is according to the state of screening-mode change-over switch 110, and judgement is to start with screening-mode or with replay mode.
Flow process when Fig. 8 is illustrated in and starts with screening-mode.Start various devices, so that be based upon the state (step S101) that can carry out shooting operation in the screening-mode.Under the situation of the lens barrel that camera lens 10 can stretch out or withdraw, the processing that begins to stretch out lens barrel, and start imageing sensor 16, image processing circuit 50 and take other required various devices.In starting processing, carry out the focus detection setting and return processing (step S200).
Return (step S200) in the processing in the focus detection setting shown in Fig. 9 A and the 9B, at first read out in the focus detection pattern of using the last operational instances (step S201) from memory 46.Then, measure current camera-shake amount (step S203), read the camera-shake amount (step S205) of last operating period, and above-mentioned amount of jitter is compared (step S207) from memory 46.When camera being fixed to tripod etc., think the current amount of jitter of camera and last amount of jitter will be not can be greater than setting, and, judge whether to have fixed camera according to this camera-shake amount information.
When being judged as at this when having camera-shake, be not judged as camera is fixed to tripod etc., therefore handle entering step S211, and carry out and do not carry out the sequence that processing is returned in the focus detection setting.The focus detection pattern that judgement is read in step S201 is multiple spot focus detection pattern or single-point focus detection pattern (step S211), and carries out focus detection Region Segmentation setting (step S213, S217) according to each pattern.Then, the position and the size in focus detection zone is set, still, do not have fixed camera because be judged as, therefore focus detection frame position is set to the center of view finder picture, this is general default location (step S215, S219).In Fig. 9 A and 9B, the flow process that when not having fixed camera initialization focus detection zone is provided with is shown, but can also adopts the size in focus detection zone and standard that previous setting is all continued to use in the position or adopt and continue to use the standard that size or position are provided with.
When being judged as when not having camera-shake at step S207, measure current subject condition (step S221), read the subject condition (step S223) of last operating period from memory 46, and both are compared (step S225).What carried out here relatively is the subject Luminance Distribution in as shown in Figure 7 the picture and the comparison of light source colour, and utilizes these relatively, judges from last and operates the change whether current operation exists the subject condition.When being judged as subject or position when inequality, handling entering step S211, and carry out and do not continue to use the processing sequence that last focus detection zone is provided with.
When being judged as subject according to the focus detection pattern of being read at step S201 when identical (step S231), return the focus detection zone of storing and be provided with at each pattern with the position.(step S233, S239) is set afterwards carrying out the focus detection Region Segmentation according to the focus detection pattern, the focus detection regional location and the size information (step S235 and S241) of each focus detection pattern being stored from memory 46 sensing pins.Use the information of being read, focus detection regional location and size (step S237 and S243) are set, and finish and return the processing that the focus detection frame is provided with.
, drive imageing sensor 16 and image display 108, therefore be converted to the live view state (step S103) that monitors the subject image thereafter.The user becomes and can wish that the subject of taking finds a view to the user by the reference live view, and owing to show the set focus detection zone that is superimposed upon on the live view, thereby can know and will in which zone, carry out AF.
When the user owing to their shooting intention is wished change focus detection pattern, when perhaps wish changing the position in focus detection zone or size, the user carries out this change (step S300) by operating operation member 151,155 or 159 under this shooting holding state.
Here, the operation that is provided with of the change focus detection of in step S300, carrying out with reference to the flowchart text among figure 10A and the 10B.
At first, when being judged as (step S301) when existing the focus detection pattern to change instruction, then change over the judgement (step S331) of which focus detection pattern, and carry out focus detection Region Segmentation setting (step S333 and S339) according to each focus detection pattern.Then, sensing pin is to focus detection regional location and the size information (step S335 and S341) of each focus detection pattern storage in memory 46, and these information are provided with (step S337 and S343).After finishing setting, with the current focus detecting pattern information stores (step S345) in memory 46 after switching.
When being judged as at step S301 when having the move of focus detection frame position, the judgement (step S311) of which focus detection pattern then is set, and changes focus detection regional location setting (step S313 and S317) according to the operation of control member.As shown in Figure 3 and Figure 4, in the scope of restriction, the focus detection zone can be moved to the position of expecting in the picture.Finish move after, store the focus detection regional location (step S315 and S319) that mobile purpose is located in.
When being judged as at step S301 when existing focus detection frame size to change instruction, the judgement (step S321) of which focus detection pattern then is set, and changes focus detection area size setting (step S323 and S327) according to the operation of control member.By switching 3a and the 3b among Fig. 3 or switching 3c and 3d operates the focus detection area size and changes.After size changes, the size information (step S325 and S329) after storage changes.
Like this, the user can change the focus detection zone according to expectation and be provided with under holding state, and this configuration information is stored in the camera.
Check whether pressed release-push (SW1) 104, this is the instruction (step S105) that begins to take preparation from holding state.If do not press SW1, then can receive the focus detection zone change etc. is set, but after detecting SW1 and having begun to take preparation, can not receive the focus detection zone change etc. is set.Reason is when carrying out the AF operation after SW1 presses, the focus detection area information that need select.Detect in this mode press SW1 after, carry out SW1 sequence (step S400).
Here, will in step S400, press the operation that release-push (SW1) carries out afterwards with reference to the flowchart text among Figure 11.
After pressing SW1, at first, the AE that utilizes suitable brightness to take handles (step S401).In the AE process, picture is divided into some, in each piece, measure the brightness of subject, and suitably estimate the brightness (step S403) of each piece according to the condition of subject.For example, under the situation of as shown in Figure 7 Luminance Distribution, can focus measurement think the light in the zone that object exists.Then, the color of measurement light source, thereby and acquisition of information can know the condition (step S405) of subject.The subject condition that to collect in step S401 and step S405 is stored in (step S407) in the memory 46.The subject conditional information that reference is stored here in initiating sequence shown in Figure 8.Here, adopt a kind of like this standard: when pressing SW1, storage subject information, but can also adopt a kind of like this standard: before pressing SW1, continue to collect subject information.Yet, owing to worry that being used to collect this information processing meeting increases power consumption, and hypothesis is after pressing SW1, finished the setting of camera and subject reliably, thereby in Figure 11, adopt a kind of like this standard: after pressing SW1, collect and storage subject information.
After AE handles, carry out AF and handle (step S409).In AF handles, use returning between the starting period of Fig. 9 A or initialized focus detection configuration information or use the focus detection configuration information that in Figure 10 A and 10B, changes, carry out focus detection, therefore with focal point control to suitable focal position.Then, surveying camera amount of jitter (step S411), and with camera-shake amount information stores (step S413) in memory 46.The subject camera-shake amount information that reference is stored here in the initiating sequence shown in Fig. 9 A and the 9B.
After finishing the SW1 processing, check whether SW1 closes (off) (step S107) or whether interruptedly do not press SW2 (step S109).When closing SW1, suppose and do not wish to take, and turn back to the shooting holding state temporarily.When pressing SW2, carry out and take (step S111).When taking,, optimum exposure setting and focal point control have therefore been carried out owing to press SW1 thereby carried out AE and AF processing.
Figure 12 A～12F illustrates from the sequence of screening-mode to the state-transition except that taking.Represent powered-down or replay mode beyond taking.In Figure 12 A～12F, the sequence of various patterns is shown, and this expression will be removed the various modes of focus detection zone configuration information.
Figure 12 A illustrates the sequence of not removing any focus detection zone configuration information.In this case, keep all focus detection zone configuration informations of storage, therefore can when starting camera, return these settings next time.
Figure 12 B illustrates the sequence of removing decoking point detection pattern focus detection area information in addition.In this case, only can return the focus detection pattern, and not return previous position and the size that is provided with of user.
Figure 12 C illustrates the sequence of the focus detection area size of only removing multiple spot focus detection and single-point focus detection.Figure 12 D illustrates the sequence of the focus detection regional location of only removing multiple spot focus detection and single-point focus detection.Figure 12 E illustrates the size of removing multiple spot focus detection and the sequence of position.Figure 12 F illustrates the size of removing single-point focus detection and the sequence of position.
In various patterns, can adopt arbitrary sequence according to product specification such as these grades.
Utilize the foregoing description, when a plurality of focus detection pattern of the position that can change the focus detection zone and size is set, can suitably store and return the focus detection position and the size that have been provided with at each focus detection pattern, therefore realize the raising of operability.
Can be by making for each specifies focus detection regional location and focus detection area size in a plurality of focus detection patterns, and can store the focus detection area information of each focus detection pattern, in each focus detection pattern, utilize for subject suitable setting to take and become easily, thereby improved operability.
In addition, by according to powered-down, be converted to replay mode or take in the change of the first-class camera state of optical frames or the change of the laying state of camera or the change of subject, the focus detection area information that suitable use has been stored can use the setting of the shooting intention of considering photographer.
Second embodiment
Figure 13 is the integrally-built block diagram that illustrates as the digital camera of the example of the picture pick-up device in the second embodiment of the invention.
The fader control member (following " aperture/shutter ") of Reference numeral 105 expression apertures and shutter etc., and Reference numeral 115 expressions drive the aperture/shutter driving motor of aperture/shutter 105.Reference numeral 117 expressions are to the aperture/fast gate drive circuit of aperture/shutter driving motor 115 input drive signals with mobile aperture/shutter 105.
The zoom lens of Reference numeral 112 expressions change focal length of taking lens, and Reference numeral 114 expressions detect the optical chopper of the initial position of zoom lens 112.Reference numeral 118 expressions drive the zoom lens driving motor of zoom lens 112, and Reference numeral 119 expressions are to the zoom lens driving circuit of zoom lens driving motor 118 input drive signals with zoom lens motionless zoom lens 112.
Reference numeral 120 expressions are to the Zoom switch (SW) of CPU 60 input indications beginning and the stop signal of zoom operation.The switch (being shown " SW1 " at Fig. 1) that Reference numeral 121 expression is used for indicating the shooting of AF and AE etc. to prepare, and Reference numeral 122 expressions are used for indicating the photographing process indicator cock (Fig. 1 is shown " SW2 ") of the photographing process of main exposure and recording operation etc. after taking the operation of preparing indicator cock 121.Reference numeral 123 expressions are used to the main switch (SW) of the power supply of the system that opens, and Reference numeral 124 expressions are provided with the mode switch (SW) of the mode of operation of camera.
The program storage of the program of being carried out by CPU 60 is stored in Reference numeral 125 expressions, and Reference numeral 126 expressions are used for interim working storage of storing required various data when CPU 60 handles according to the program that is stored in program storage 125.Reference numeral 127 expressions show the duty of camera and the operation display unit of various warnings, and Reference numeral 128 expressions are controlled displaying contents as the electronic viewfinder (EVF) of the display device of display image and AF frame etc. by CPU 60.That is, CPU 60 plays the effect of display control unit spare.The various settings of Reference numeral 129 expression carrying out switch (SW) is set.Menu item, 131 expressions of the also crossbar switch of the position of the focus detection frame (AF frame) of the mobile expression of indication focus adjustment region, and Reference numeral that Reference numeral 130 expressions for example are used to select to be presented on operation display unit 127 or the EVF 128 are carried out the face-detecting unit that face detects from the picture signal (image) that obtains by making a video recording.Reference numeral 132 expression is provided with switch (SW) as being used to change over the AF frame that the AF frame is provided with the mode switch parts of pattern (first pattern), wherein is provided with in the pattern at the AF frame, changes the position and the size of AF frame.When pressing the AF frame switch 132 is set, hocketing is provided with to the AF frame that pattern (first pattern) changes and from the AF frame pattern is set discharges (second pattern).The AF frame size that Reference numeral 133 expression is used to change the size of AF frame changes switch (SW).In a second embodiment, as shown in Figure 5, present the individual AF frame in 9 (3 * 3), and be provided with that they are adjacent one another are.
In this embodiment, in having the digital camera of said structure, when photographer pressed SW 1, CPU 60 handled operation to AF and controls based on the program that is stored in the program storage 125.That is, CPU 60 is as the focus adjustment component.Be the simple declaration that AF handles operation below.
At first, focusing lens 111 are moved to the scanning starting position.For example, the scanning starting position is the unlimited edge in the zone that can focus on.
Then, the analog video signal that will read from imageing sensor 16 by A/D converter 22 converts digital signal to.Then, make the radio-frequency component of image processing circuit 50 extractions, and it is stored in the working storage 126 as focus evaluated value the luminance signal of each AF frame output.
Then, obtain the current location of focusing lens 111, and it is stored in the working storage 126.When using stepping motor as focusing lens driving motor 109, focusing lens 111 can be positioned at away from the position by the relative driving pulse quantity of optical chopper 113 detected initial positions.In addition, can use rotary encoder etc. to measure the absolute position.
, judge whether the current location of focusing lens 111 with scan end position identical,, then calculate the maximum focus evaluated value in the focus evaluated value of being obtained if identical thereafter.If inequality, then on the direction of the end of scan, focusing lens 111 are moved scheduled volume, read analog video signal once more from imageing sensor 16, and obtain focus evaluated value as mentioned above.
Carry out aforesaid AF for all AF frames (being 9 frames in this embodiment) and handle operation, and from obtaining to obtain best focus position in the peaked AF frame.For example, the AF frame on the selective focus subject up front, and used as focal position.By selecting this AF frame, can avoid so-called " center lose burnt ", in " center is lost burnt ", under the scene that two people stand away from each other, focus is adjusted to background (between two people, or at the center), thereby make this two people lose Jiao.In addition, have maximum peaked AF frame or to select intermediate value etc. by selecting, can be used to obtain the selection of the AF frame of focal position based on various condition appropriate changes.
Like this, based on the program that CPU 60 has set in advance, focus control reality is judged automatically based on the subject of which the AF frame in a plurality of AF frames.
Then be used for changing the process of AF frame state (position of this embodiment and size) with reference to the flowchart text among Figure 14.
At first, at step S1401, the variable STATUS (that is, whether be in the AF frame pattern is set) that expression AF frame is provided with the state of pattern is arranged to " determining "." determine " that expression is not in the AF frame pattern is set, that is, and the pattern (second pattern) when not changing the position of AF frame and size.This STATUS is stored in the working storage 126.Then,, AF frame size is arranged to " little " as original state, and the center of picture is arranged in AF frame position, and they are stored in the working storage 126 at step S1402.In the present embodiment, AF frame size can be arranged to three grades " greatly ", " in " and " little ", but can certainly adopt such structure: the AF frame sizes beyond can being provided with these three grades according to expectation.
In step S1403, judge whether to press the AF frame switch 132 is set, if supress this switch, then handle and enter step S1404, if do not press this switch, then handle and enter step S1409.
In step S1404, check the state that is stored in the variable STATUS in the working storage 126; If be " determining " (that is, not being that the AF frame is provided with pattern), then handle and enter step S1405, if not " determining ", then handle and enter step S1407.In step S1405, STATUS is changed over " setting ", and it is stored in the working storage 126." setting " expression AF frame is provided with pattern (first pattern), and when STATUS is " setting ", can change AF frame position and size.Then, at step S1406, all a plurality of AF frames are superimposed on by being presented on the EVF 128 on the image of taking acquisition.Under original state (size is " little ", and the position is in the center), carry out the demonstration shown in Figure 17 A.Here, 9 AF frames altogether are shown, wherein vertical three AF frames and three AF frames of level.
On the other hand, if STATUS is not " determining ", then in step S1407, STATUS is changed over " determining ", and it is stored in the working storage 126.In addition, as described in first embodiment, store AF frame position and size information.Then, in step S1408, change be presented at the AF frame on the EVF 128 demonstration with display indicator, thereby know the overall positions and the size of a plurality of AF frames.For example, when the demonstration carried out as shown in Figure 17 A, shown in Figure 17 B, become simplification to show display change as indicator, thereby use vertical three AF frames and three AF frames of level altogether 9 AF frames as one group, know the overall positions and the size of this group, and this demonstration is superimposed upon on the image that is obtained.
In step S1409, check the state that is stored in the STATUS in the working storage 126; If be " setting ", then handle and enter step S1410, to be converted to the processing that changes AF frame position and size,, then finish to work as pre-treatment if not " setting ".
In step S1410, check the mode of operation of crossbar switch 130; If operated this crossbar switch 130, then handle and enter step S1411, if not operation is then handled and entered step S1412.In step S1411,, handle then and enter step S1412 according to moving AF frame position with reference to the described process of Figure 15 after a while.
In step S1412, check that AF frame size changes the mode of operation of switch 133; Change switch 133 if operated this AF frame size, then handle entering step S1413, if not operation is then handled and entered step S1403.In step S1413, with reference to the described process change AF of Figure 16 frame size, handle then and turn back to step S1403 according to after a while.
Like this, be under the state of " setting " at STATUS, show whole AF frame, and can change AF frame position and size, be under the state of " determining " at STATUS, thereby show not influencing under the situation of observing subject and know AF frame size and position.
Then processing is moved in the AF frame position of carrying out in the step S1411 of Figure 14 with reference to the flowchart text among Figure 15.According to the program that is stored in the program storage 125, carry out this processing in response to the operation of crossbar switch 130 by CPU 60.Change parts when therefore, CPU 60 and crossbar switch 130 are as this position of change.
At first, in step S1501, check the AF frame size that is stored in the working storage 126.If be " greatly ", then handle and enter step S1502, if be " in ", then handle and enter step S1503, if be " little ", then handle and enter step S1504.In step S1502, with on the AF frame/down/when a left side/marginal position that moves right (the moving boundary position of the AF frame in the picture of EVF 128) is arranged to AF frame size for " greatly " on/down/left side/marginal position that moves right, and it is stored in the working storage 126.In step S1503, with on the AF frame/down/left side/marginal position that moves right be arranged to AF frame size for " in " time on/down/left side/marginal position that moves right, and it is stored in the working storage 126.In step S1504, with on the AF frame/down/when a left side/marginal position that moves right is arranged to AF frame size for " little " on/down/left side/marginal position that moves right, and it is stored in the working storage 126.Therefore these move marginal position each size of AF frame are fixed, and in advance the size of they and AF frame are remained on explicitly in the internal storage (not shown) etc. of program storage 125 or CPU 60, and by reading out they are provided with.
The AF moving marginal position of frameing shift is set in step S1502～S1504 of Figure 15 in the following manner.
At first, when AF frame size be " greatly ", on the use picture/time/left side/right hand edge is as mobile marginal position (19a among Figure 19).When AF frame size be " in " time, the identical position, center of these 9 the AF frames when the center of 9 AF frames and AF frame size are " greatly " is provided with mobile marginal position.That is, AF frame size for " in " time the mobile marginal position in left side of 9 AF frames be by the position of the dotted line of (1) expression among the 19b of Figure 19.Equally, when AF frame size was " little ", the identical position, center of these 9 the AF frames when being " greatly " in the center of 9 AF frames with AF frame size was provided with mobile marginal position.That is, when the mobile marginal position in the left side of AF frame size these 9 the AF frames during for " little " be by the position of the dotted line of (2) expression among the 19c of Figure 19.Figure 19 illustrates mobile marginal position left and that the below makes progress, but the mobile marginal position that also regulation is right and the top makes progress in the same manner.
Like this, by stipulating mobile marginal position as benchmark and, when the edge at picture changes AF frame size, can easily take subject not according to AF frame size with the center.That is, even when changing AF frame size when the subject at the center that is in these 9 AF frames in shooting, the center of these 9 AF frames does not change yet, and therefore can avoid subject to shift out the AF frame or near the edge of AF frame.
In step S1505, check the mode of operation of crossbar switch 130; That is, judge and press/descend/which button of a left side/right side, and in step S1506, mobile AF frame on the direction that beginning is judged in step S1505.For example, if press the right button of crossbar switch 130, then at the right-hand AF frame that moves up.In step S1507, check whether any one position, angle in these 9 AF frames that step S1506 begins to move has arrived the mobile marginal position that is provided with in any one of step S1502～S1504; If arrived, then handle and enter step S1509, if do not arrive, then handle and enter step S1508.In step S1508, check and whether continue to press crossbar switch 130, and if continuing, then continue mobile AF frame, handle turning back to step S1507, and check for arriving mobile marginal position.On the other hand,, then handle entering step S1509, and stop to move of AF frame if crossbar switch 130 cuts out.
Figure 17 B illustrate operation by above-mentioned crossbar switch 130 with the AF frame shown in Figure 17 A to upper right mobile example.Under this state, when pressing the AF frame switch 132 is set, handle from the step S1403 of Figure 14 and enter step S1404, STATUS is changed over " determining ", and in step S1408, the demonstration of display change one-tenth shown in Figure 18 B.
Then the AF frame size of carrying out in the step S1413 of Figure 14 with reference to the flowchart text among Figure 16 changes processing.According to the program that is stored in the program storage 125, carry out this processing in response to the operation that AF frame size changes switch 133 by CPU 60.Change parts when therefore, CPU 60 and AF frame size changes switch 133 as the change size.
At first, in step S1601, check the size that is stored in the current AF frame in the working storage 126; If be " greatly ", then handle and enter step S1605, AF frame size is changed over from " greatly " " ", after changing, AF frame size is stored in the working storage 126.If not " greatly ", then handle entering step S1602, and judge the size that is stored in the current AF frame in the working storage 126 whether be " in ".If be " in ", then handle entering step S1603, with the size of AF frame from " " change over " little ", and after changing, AF frame size is stored in the working storage 126.In addition, at step S1602, if be judged as the size of current AF frame be not " in ", then handle and enter step S1604, AF frame size is changed over " greatly " from " little ", and after change, AF frame size is stored in the working storage 126.
Like this, when pressing AF frame size change switch 133, AF frame size is changed over little changing over again greatly again from change over greatly.
Figure 17 C be illustrated under the state shown in Figure 17 B with size for the AF frame of " little " change over " in " the example of situation.Under this state, when pressing the AF frame switch 132 is set, handle from the step S1403 of Figure 14 and enter step S1404, STATUS is changed over " determining ", and in step S1408, the demonstration of display change one-tenth shown in Figure 18 C.
According to above-mentioned present embodiment, when position that changes the AF frame and size (the AF frame is provided with pattern), show all AF frames, therefore can visually confirm the position and the size of all AF frames.Therefore, photographer can easily be set to the AF frame position and the size of expectation.In addition, (when not being in the AF frame pattern is set) used a plurality of AF frames as a group, and shown as indicator after definite position and size, thereby knows the integral position and the size of this group.Therefore, in the appropriate location of the AF frame when confirming to take and the size, can under the situation of the visuality that does not influence subject, find a view to image.
In the above description, the situation that has 9 AF frames has been described, still, certainly,, has also obtained identical effect even the quantity of AF frame changes.In addition, under the situation of an AF frame, also can obtain same effect.
In addition, can adopt the user can change the type of AF frame and the structure of quantity.
The 3rd embodiment
The third embodiment of the present invention then is described.
In above-mentioned second embodiment, when mobile AF frame, use the center to come the regulation end position, and, can also adopt a kind of like this structure: the edge that can move to picture regardless of AF frame size not according to AF frame size as benchmark.Then the situation of this structure is adopted in explanation.
In the 3rd embodiment, the basic process of the structure of picture pick-up device and position that is used to change the AF frame and size is with described identical with reference to Figure 13 and 14, so omits the explanation to it here.
Figure 20 is that the process flow diagram of processing is moved in the AF frame position of carrying out in the step S1411 of Figure 14 that illustrates in the present embodiment, and replaces carrying out this AF frame position with reference to the described processing of Figure 15 among second embodiment and move processing.
At first, in step S2001, the mobile marginal position of AF frame is arranged to the edge of view finder picture, and it is stored in the working storage 126.In step S2002, check the mode of operation of crossbar switch 130; That is, judge and press/descend/which button of a left side/right side, and in step S2003, beginning mobile AF frame on the direction that step S2002 judges.For example, if press the right button of crossbar switch 130, then at the right-hand AF frame that moves up.In step S2004, check whether the position, any one angle in 9 AF frames that step S2003 begins to move has arrived the mobile marginal position that is provided with in step S2001; If arrived, then handle and enter step S2006, if still no show is then handled and entered step S2005.In step S2005, check and whether just continuing to press crossbar switch 130, and if continuing, then continue mobile AF frame, handle turning back to step S2004, and check for arriving mobile marginal position.On the other hand, if crossbar switch 130 cuts out, then handle entering step S2006, and stop mobile AF frame.
By controlling in the above described manner, the AF frame can be moved to the edge of view finder picture, and no matter AF frame size how.
Figure 21 is that the AF frame that carries out in the step S1413 of Figure 14 size that illustrates among the 3rd embodiment changes the process flow diagram of handling, and replaces among second embodiment with reference to the described processing of Figure 16, carries out this AF frame size and changes and handle.
At first, in step S2101, check the size that is stored in the current AF frame in the working storage 126; If be " greatly ", then handle and enter step S2105, AF frame size is changed over from " greatly " " ", and after changing, AF frame size is stored in the working storage 126.If not " greatly ", then handle entering step S2102, and judge the size that is stored in the current AF frame in the working storage 126 whether be " in ".If be " in ", then handle entering step S2103, with the size of AF frame from " " change over " little ", and after changing, AF frame size is stored in the working storage 126.In addition, in step S2102, if be judged as the size of current AF frame be not " in ", then handle and enter step S2104, AF frame size is changed over " greatly " from " little ", and after changing, AF frame size is stored in the working storage 126, and processing enters step S2106.
In step S2106, when with AF frame size when " little " changes over " greatly ", check whether the marginal position of AF frame exceeds view finder picture edge, that is, stretch out the view finder picture; If stretched out the view finder picture, then handle and enter step S2107, if do not stretch out, then finish this processing.In step S2107, to the mobile AF frame in inside, till the AF frame does not stretch out the view finder picture.
Utilize this structure, no matter AF frame size how, when the AF frame being moved to the edge of view finder picture, when with AF frame size when " little " changes over " greatly ", the marginal position of AF frame does not stretch out the view finder picture, and is in the view finder picture.Therefore,, AF frame and the subject that is positioned at the edge of view finder picture are complementary, have therefore increased the degree of freedom of finding a view, thereby improved the camera operability no matter select which AF frame size.
In above-mentioned example, such a case has been described, in this case, the AF frame AF frame is moved to the position that the AF frame does not stretch out, but this is not for restriction of the present invention when the view finder picture stretches out after changing AF frame size.For example, can adopt a kind of like this structure, in this structure, when the AF frame when the view finder picture stretches out, do not change size, perhaps in the time can focus adjustment region big or small being set, size can be changed to the full-size of not stretching out from the view finder picture according to expectation.In addition, when comprising a plurality of AF frame, can reduce the quantity of AF frame, thereby not use the AF frame that stretches out from the view finder picture at least.
Other embodiment
In addition, can also realize the purpose of each embodiment by the method for following kind.That is the storage medium (or recording medium) of the program code of the software that writes down the function that realizes the foregoing description, is set in system or equipment.The program code that is stored on this storage medium is read and carried out to the computing machine of this system or equipment (or CPU or MPU).In this case, the program code of reading from this storage medium itself is realized the function of the foregoing description, and the storage medium of therefore storing this program code constitutes the present invention.In addition, except that the function of carrying out the foregoing description that the program code read realizes by computing machine, the present invention also comprises the situation of following kind.Particularly, based on the instruction of program code, operation operating system (OS) on computers etc. is carried out some or all actual treatment, and handles the function that realizes the foregoing description by this.
In addition, the present invention also comprises the situation of following kind.Particularly, will from the program code that storage medium is read write be arranged on the expansion board inserted the computing machine or with functional expansion unit that computing machine is connected in storer in.Based on the instruction of this program code, be arranged on CPU in this expansion board or functional expansion unit etc. carry out some or all actual treatment, and by this handle the function that realize the foregoing description thereafter.
When applying the present invention to above-mentioned storage medium, will with aforementioned process corresponding programs code storage on this storage medium.
Although the present invention has been described, should be appreciated that the present invention is not limited to disclosed exemplary embodiments with reference to exemplary embodiments.The scope of appended claims meets the wideest explanation, to comprise all these class modifications, equivalent structure and function.
Claims (6)
1. picture pick-up device comprises:
Imageing sensor is used for the subject image that opto-electronic conversion is formed by optical lens;
Focus detecting unit is used to use the picture signal from the focus detection zone, detects the focus state of described subject image, and wherein said focus detection zone is the zone as the part in the picture of described imageing sensor;
The unit is set, be used in described picture, being provided with under the multiple spot focus detection pattern in a plurality of focus detection zone, by the size in a plurality of focus detection zone and at least one in the position are changed together as a group in a plurality of focus detection zone, the focus detection zone is set, in described picture, be provided with under the single-point focus detection pattern in a focus detection zone, size by changing a focus detection zone and at least one in the position are provided with the focus detection zone; And
Storage unit is used for respectively the situation of described multiple spot focus detection pattern and the situation of described single-point focus detection pattern are stored the size in described focus detection zone and at least one in the position separately,
Wherein, the described unit that is provided with carries out described setting in pattern is set,
When being provided with in described size and the described position at least one by the described unit that is provided with, and described when pattern being set finishing, the size in the described focus detection of described cell stores zone and at least one in the position, and
The described unit that is provided with is opened when entering shooting state from closing to become at the power supply that makes described picture pick-up device, perhaps when the playback mode of photographic images switches to shooting state, when switching to shooting state after perhaps in the body that described optical lens is accommodated in described picture pick-up device, if described picture pick-up device is judged as last time not variation between subject information in the taking subject information in taking with this, and do not change between the placement information during the placement information in last time taking and this are taken, then when this is taken, use the previous size that is stored in the described focus detection zone in the described storage unit that is provided with and at least one in the position.
2. picture pick-up device according to claim 1, it is characterized in that, the scope that the position in described focus detection zone can be moved in described picture is respectively in the situation that has a plurality of focus detection zone with to exist between the situation in a focus detection zone be different.
3. picture pick-up device according to claim 1, it is characterized in that, the centre coordinate that the focus detection zone under the multiple spot focus detection pattern in a plurality of focus detection zone will be set in described picture movably scope, with the single-point focus detection pattern that a focus detection zone is set in described picture under the focus detection zone centre coordinate movably scope be made as identical.
4. picture pick-up device according to claim 1, it is characterized in that, the housing that the focus detection zone under the multiple spot focus detection pattern in a plurality of focus detection zone will be set in described picture movably scope, with the single-point focus detection pattern that a focus detection zone is set in described picture under the focus detection zone housing movably scope be made as identical.
5. picture pick-up device according to claim 1 is characterized in that, also comprises: display unit is used to show the subject image that is obtained by described imageing sensor; And indicator, be used to represent described focus detection zone,
Wherein, when when the described described setting that is provided with in the pattern has finished, described display unit will represent that the display change of the described indicator in described focus detection zone becomes the demonstration of the indicator that profile emphasized.
6. method that is used to control picture pick-up device, described picture pick-up device are provided with the imageing sensor of the subject image that opto-electronic conversion forms by optical lens, said method comprising the steps of:
The focus detection step is used to use the picture signal from the focus detection zone, detects the focus state of described subject image, and wherein said focus detection zone is the zone as the part in the picture of described imageing sensor;
Step is set, be used in described picture, being provided with under the multiple spot focus detection pattern in a plurality of focus detection zone, by the size in a plurality of focus detection zone and at least one in the position are changed together as a group in a plurality of focus detection zone, the focus detection zone is set, in described picture, be provided with under the single-point focus detection pattern in a focus detection zone, size by changing a focus detection zone and at least one in the position are provided with the focus detection zone; And
Storing step is used for respectively storing the size in described focus detection zone and at least one in the position under the situation of the situation of described multiple spot focus detection pattern and described single-point focus detection pattern,
Wherein, be provided with in the step, in pattern is set, carry out described setting described,
In described storing step, when being provided with in described size and the described position at least one by the described step that is provided with, and described when pattern being set finishing, store the size in described focus detection zone and at least one in the position, and
Be provided with in the step described, open when entering shooting state from closing to become at the power supply that makes described picture pick-up device, perhaps when the playback mode of photographic images switches to shooting state, when switching to shooting state after perhaps in the body that described optical lens is accommodated in described picture pick-up device, if described picture pick-up device is judged as last time not variation between subject information in the taking subject information in taking with this, and do not change between the placement information during the placement information in last time taking and this are taken, then when this is taken, use the size in the previous described focus detection zone of in described storing step, storing that is provided with and at least one in the position.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007202237A JP5064926B2 (en) | 2007-08-02 | 2007-08-02 | Imaging apparatus and control method thereof |
| JP2007202237 | 2007-08-02 | ||
| JP2007-202237 | 2007-08-02 | ||
| JP2007203407A JP5063249B2 (en) | 2007-08-03 | 2007-08-03 | Focus control device and method |
| JP2007-203407 | 2007-08-03 | ||
| JP2007203407 | 2007-08-03 |
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| Publication Number | Publication Date |
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| CN101359150A CN101359150A (en) | 2009-02-04 |
| CN101359150B true CN101359150B (en) | 2011-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101354192A Expired - Fee Related CN101359150B (en) | 2007-08-02 | 2008-08-01 | Image capturing apparatus and control method therefor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5064926B2 (en) |
| CN (1) | CN101359150B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4784678B2 (en) * | 2009-04-22 | 2011-10-05 | カシオ計算機株式会社 | Imaging apparatus, imaging method, and program |
| JP5402857B2 (en) * | 2010-07-05 | 2014-01-29 | 株式会社ニコン | Imaging device and lens barrel |
| CN102131059B (en) * | 2011-04-20 | 2016-03-02 | 中国科学院半导体研究所 | Towards the high-speed row parallel image transducer of real-time vision chip |
| CN103257510B (en) * | 2013-04-27 | 2016-01-06 | 宁波舜宇光电信息有限公司 | A kind of fast automatic focus adjustment method |
| JP6539015B2 (en) | 2013-12-05 | 2019-07-03 | キヤノン株式会社 | Image pickup apparatus and control method thereof |
| JP2015179179A (en) * | 2014-03-19 | 2015-10-08 | カシオ計算機株式会社 | Imaging apparatus, method for setting photographing condition, and program |
| CN104159027B (en) * | 2014-08-15 | 2019-03-15 | Oppo广东移动通信有限公司 | A kind of method and device according to picture pace of change automatic camera |
| WO2021029152A1 (en) * | 2019-08-14 | 2021-02-18 | 富士フイルム株式会社 | Image capturing device, operation method for image capturing device, and program |
| JP7418104B2 (en) * | 2019-08-30 | 2024-01-19 | キヤノン株式会社 | Image processing device and method of controlling the image processing device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002365519A (en) * | 2001-06-04 | 2002-12-18 | Fuji Photo Optical Co Ltd | Device for detecting state of focusing |
| JP2004294873A (en) * | 2003-03-27 | 2004-10-21 | Canon Inc | Optical device |
| JP4374574B2 (en) * | 2004-03-30 | 2009-12-02 | 富士フイルム株式会社 | Manual focus adjustment device and focus assist program |
| JP2006058405A (en) * | 2004-08-18 | 2006-03-02 | Casio Comput Co Ltd | Camera apparatus and automatic focusing control method |
| JP4866557B2 (en) * | 2005-03-03 | 2012-02-01 | パナソニック株式会社 | Video signal processing apparatus, imaging apparatus equipped with the video signal processing apparatus, video signal processing method, and video signal processing program |
| JP4367955B2 (en) * | 2005-04-21 | 2009-11-18 | キヤノン株式会社 | Imaging apparatus and control method thereof |
| JP2007011054A (en) * | 2005-06-30 | 2007-01-18 | Canon Inc | Imaging apparatus, control method for imaging apparatus and computer program |
| JP4350725B2 (en) * | 2005-08-05 | 2009-10-21 | キヤノン株式会社 | Image processing method, image processing apparatus, and program for causing computer to execute image processing method |
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2007
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2008
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| Publication number | Publication date |
|---|---|
| JP5064926B2 (en) | 2012-10-31 |
| JP2009037067A (en) | 2009-02-19 |
| CN101359150A (en) | 2009-02-04 |
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