JP3109808B2 - Electronic camera device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic camera device having a so-called camera shake prevention function capable of effectively correcting a blur of a subject image.

[Prior Art] At the time of film exposure of a subject image using a camera device, that is, at the time of photographing by a camera, a shift of a subject image formed on a film surface, so-called camera shake (camera shake) becomes a problem. In particular, when performing long-time exposure, super-telephoto shooting, or macro shooting, the above-mentioned camera shake becomes a serious problem.

Conventionally, such camera shake is prevented and sharpness (resolution)
In order to perform high-speed shooting, a camera is exclusively fixed to a tripod, and an auxiliary light source such as a strobe light is used in combination in order to perform exposure for a short time such that a camera shake problem can be practically ignored. However, it is generally very troublesome to use such auxiliary means together, and there is a problem that the handling of the camera and its mobility are significantly impaired.

Such a problem also occurs in an electronic camera that electronically captures and inputs a subject image using a solid-state imaging device.

[Problems to be Solved by the Invention] As described above, in the related art, in order to prevent camera shake in a camera, it is necessary to use an auxiliary means such as a tripod, which is extremely troublesome.

The present invention has been made in view of such circumstances,
It is an object of the present invention to provide an electronic camera device capable of correcting a temporal shift of an image at the time of exposure of a subject image and effectively preventing so-called camera shake.

[Means for Solving the Problems] An electronic camera device according to the present invention includes an image sensor for electronically capturing a subject image, a photographic optical lens for forming a subject image on an imaging surface of the image sensor, An image pickup device driving means for driving the image pickup device at high speed to repeatedly perform electronic image pickup of a subject image; and two left and right regions L and R on the image pickup surface of the image pickup device around the optical axis of the photographing optical lens. Is set, and the vector of the displacement of the subject image is set for each of these areas.
means for determining f _L and f _R, based on the vector f _L and f _R of the deviation, and determines a rotation movement vector R of around translation vector S and the optical axis in a plane perpendicular to the optical axis Means for correcting a shift of a subject image formed on an imaging surface of an imaging device based on the translation vector S and the rotation vector R.

[Effect] The present invention relates to a left-right camera having an optical axis of a photographing optical lens.
Focusing on the point that the shift amount in the two regions L and R is the object around the optical axis M, based on the shift vectors f _L and f _R of the subject obtained for these two regions,
The translation vector S and the rotation vector R of the entire subject image are obtained, and the optical positional relationship between the imaging optical lens and the imaging surface of the image sensor is displaced based on the translation vector S and the rotation vector R. In this case, the displacement of the subject image formed on the imaging surface of the imaging device is corrected. With such a configuration, the present invention can obtain the displacement of the subject image formed on the imaging surface with high accuracy by a simple calculation, and can easily perform high-resolution shooting based on the displacement of the subject image. .

Hereinafter, an electronic camera device according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic configuration diagram of a main part of an electronic camera device related to the present invention. Reference numeral 1 denotes a photographic optical lens, and 2 denotes a solid-state imaging device that electronically captures a subject image formed by the photographic optical lens 1. is there. The photographing optical lens 1 is driven by focusing, for example, by a distance measuring system (not shown) in order to form a subject image on the imaging surface of the imaging device 2. An aperture stop mechanism, a shutter mechanism, and the like incorporated in the photographing optical lens 1 are driven under the control of a photometric system (not shown) so that the amount of exposure of the subject image by the solid-state imaging device 2 is constant.

The feature of this apparatus is that the photographing optical lens 1 is supported on a camera body via an actuator 3 and is provided so as to be movable in a plane orthogonal to the optical axis. Specifically, the imaging optical lens 1 is supported by an x-direction actuator 3x and a y-direction actuator 3y,
By driving these actuators 3x and 3y, the photographing optical lens 1 is displaced in the x direction and the y direction orthogonal to the optical axis, so that the optics between the photographing optical lens 1 and the imaging surface of the image sensor 2 with respect to the subject. It is characterized in that it is configured to displace the target positional relationship.

As the image pickup device 2 for electronically picking up a subject image formed via the photographing optical lens 1, for example, a solid-state image pickup device composed of a high-sensitivity, high-speed operation type AMI (amplification type MOS imager) is used. . An image sensor driving circuit (not shown) drives such a solid-state image sensor 2 at a high speed over a predetermined period determined by the above-described photometric system, for example, in synchronization with a shutter release operation. Due to this high-speed driving, the solid-state imaging device 2 repeatedly captures a subject image at a predetermined operation cycle, for example, as schematically shown in FIG. And read out.

The subject image signal repeatedly read at high speed from the solid-state imaging device 2 driven at high speed in this way is amplified to a predetermined signal level via the preamplifier 4 and then input to the video processor 5. This video processor 5
The object image signal is converted into a luminance signal Y and color difference signals (RY) and (BY) and output. The luminance signal Y and the color difference signals (RY) and (BY) output from the video processor 5 in this manner are respectively A / D
It is digitally encoded via converters 6a, 6b, 6c.

Thus, the frame memory 7 used for detecting the shift of the subject image stores the first frame of the subject image signal (luminance signal Y) in synchronization with the shutter release operation.
The subject image signal of the first frame stored in the frame memory 7 is used as a reference image signal (reference subject image) for detecting a deviation from the subject image signal obtained in the second and subsequent frames.

The two-dimensional correlation circuit 8 performs a two-dimensional correlation operation between the subject image signal of the first frame stored in the frame memory 7 and each subject image signal taken in the second and subsequent frames, and these image signals ( The amount of deviation between frame images is detected as x displacement and y displacement, respectively. The two-dimensional correlation operation is performed by appropriately using an operation algorithm that has been conventionally proposed. Basically, as shown in FIG. 2, the projected components in the x and y directions of two frame images f1 and f2 having a temporal shift are compared with each other, and the amount of the shift is determined by the displacement in each of the above directions. , The two-dimensional correlation operation is performed.

Specifically, as shown in FIG. 2, assuming that the subject image f1 is formed on the solid-state imaging device 2, the projected components obtained by projecting the image signals in the y direction and the x direction are g1 and h1. . On the other hand, if the subject image shifts with time as shown by f2, the projected components for the subject image f2 are g2 and h2, respectively. That is, when the subject image f1 is shifted in the x direction and the y direction as shown by f2, the projected component is also shifted in the x direction and the y direction from g1, h1 to g2, h2, respectively.

Thus, the two-dimensional correlation circuit 8 obtains the correlation between the projected components in each of these directions, thereby obtaining the object images f1, f
The shift amounts dx and dy between the two are obtained. For example, if the sum of squares of the difference between the respective projected components is obtained as the correlation operation output value, the results are as shown in FIGS. 3 (a) and 3 (b). If the positions dx and dy that minimize such a correlation operation output value are obtained, the values can be obtained as the amounts of displacement of the subject image in the x direction and the y direction, respectively. In the two-dimensional correlation circuit 8, the two-dimensional correlation operation based on the above-described operation algorithm is basically performed easily and quickly from the luminance component Y of the subject image signal to the imaging surface of the solid-state imaging device 2. The shift amount of the formed subject image is detected. This shift amount detection is performed each time the subject image signal is repeatedly read from the solid-state imaging device 2 at a high speed.

The series of information on the x displacement and the y displacement of the subject image obtained by the two-dimensional correlation circuit 8 is
The x displacement and the y displacement are respectively detected with an accuracy of a pixel unit or less via 9x and 9y, and supplied to the actuator driving units 10x and 10y, respectively. And these actuator drives
By 10x and 10y, the x-direction actuator 3x and the y-direction actuator 3y are respectively driven, and the imaging optical lens 1 is driven to be displaced in a direction for correcting the displacement of the subject image in the x and y directions. Then, the imaging input of the subject image formed on the imaging surface of the solid-state imaging device 2 is performed by the solid-state imaging device 2 while the imaging optical lens 1 is displaced by the x-direction actuator 3x and the y-direction actuator 3y. become.

That is, the above-described drive control system of the actuators 3x and 3y is configured to form a negative feedback loop so as to displace the photographing optical lens 1 in the opposite direction with respect to the displacement of the subject image. Then, the solid-state imaging device 2 is driven at high speed in synchronization with the shutter release operation as shown in FIG. 4, and repeats the subject image formed on the imaging surface within the imaging period determined by the control of the photometric system described above. Input an image.
Thus, the first frame of the subject image signal that is repeatedly imaged at a high speed by the solid-state imaging device 2 is stored in the frame memory 7. Then, the two-dimensional correlation circuit 8 calculates a two-dimensional correlation between the subject image signal of the first frame immediately after the shutter release stored in the frame memory 7 and the subject image signals of the second and subsequent frames that are captured and input. The actuator 3x and 3y are respectively driven in accordance with the detected shift amount to displace the photographing optical lens 1 in a direction orthogonal to the optical axis.

As a result, when a subject image formed on the imaging surface of the solid-state imaging device 2 via the imaging optical lens 1 shifts, the displacement of the imaging optical lens 1 causes the displacement of the subject image on the imaging surface. The shift is corrected, and the solid-state imaging device 2 repeatedly captures and inputs the subject image corrected for the shift at a high speed.

Incidentally, the high-speed driving of the solid-state imaging device 2 is, for example, 10 μSe
The imaging and the reading of the image signal are performed at a cycle of about c. As a result, even when the photographing operation period determined by the photometric system described above is as short as, for example, about 250 μSec, a large number of subject image signals by the solid-state imaging device 2 are repeatedly obtained within the period,
The displacement control of the photographing optical lens 1 by the 3x, 3y drive is executed at a high speed with a high response, and the displacement of the subject image on the imaging surface of the solid-state imaging device 2 is effectively corrected.

By the way, under the displacement control of the photographing optical lens 1 as described above, the subject image signal obtained from the solid-state imaging device 2 that repeatedly captures the subject image whose displacement is corrected on the imaging surface at a high speed is output from the video processor as described above. 5, the luminance signal Y and the color difference signals (RY), (BY)
, And are digitally encoded through A / D converters 6a, 6b, 6c. Three frame memories 11a, 11b, and 11c for generating output image signals provided in correspondence with these respective signal components are provided with digitally encoded signals through the A / D converters 6a, 6b, and 6c. Add components 12a, 12b, 12
via c and store it.

Thus, the adders 12a, 12b, and 12c read out the signal components stored in the frame memories 11a, 11b, and 11c, respectively, add the newly input signal components, and add the respective signal components to the frame memories 11a, 11b. , 11c to obtain the accumulated values of the respective signal components on the frame memories 11a, 11b, 11c. This frame memory 11
The cumulative operation circuit using the a, 11b, 11c and the adders 12a, 12b, 12c is driven by the memory controller 13 in synchronization with the shutter release operation described above and for the photographing operation period obtained by the photometric system described above. Is done.

As described above, the luminance signal Y and the color difference signal (R) of the subject image signal repeatedly imaged at a high speed as described above.
By calculating the cumulative addition value of (−Y) and (B−Y), the level of each subject image signal is increased, and the dynamic range is expanded.

That is, in this electronic camera device, the electronic imaging input of the subject by the solid-state imaging device 2 is repeatedly performed at a high speed, and the exposure time at the time of imaging each subject is compared with the originally required exposure time. It is set short.
However, the amount of signal charge generated in the solid-state imaging device 1 according to the amount of light of the subject increases in proportion to the exposure time, and when the exposure time is set short as described above, the amount of signal charge generated is inevitably small. Become. Therefore, it is unavoidable that the level of each subject image signal repeatedly imaged at a high speed becomes extremely low. In other words, because the exposure time is short,
The exposure amount of each subject image signal for a low-luminance portion in the subject is insufficient.

In order to eliminate such a shortage of exposure, this apparatus repeatedly accumulates the individual subject image signals repeatedly imaged and input at a high speed in order to perform the above-described misalignment detection. The signal level is increased by the number of repetitions, and the dynamic range is substantially expanded to secure a necessary signal level. Therefore, for example, the image signal is repeatedly read out n times during the shooting operation period determined by the control of the photometric system, and the cumulative addition thereof is performed, whereby the image signal of the cumulatively added image signal is compared with the dynamic range of each image signal. The level (dynamic range) is output after being enlarged n times.

The noise component of the randomness of the dark current mixed into the image signal from the solid-state imaging device 2 is equal to the cumulative addition number n. Double. On the other hand, since the signal component becomes n times, the SN ratio of the subject signal is Double.

The luminance signal Y and the color difference signals (RY) and (BY) whose signal levels have been expanded in this way are read from the frame memories 11a, 11b and 11c, respectively.
The data is guided to a compressor 15 via a parallel / serial (P / S) converter 14, where the data is compressed and recorded on a predetermined recording medium. Alternatively, it is converted into a television signal such as NTSC and output, and is used for image reproduction by a TV receiver or the like.

According to the embodiment apparatus thus configured,
The displacement of the subject image formed on the imaging surface of the solid-state imaging device 2 can be effectively corrected, and high-resolution shooting without so-called image blur can be performed.

By the way, in the above-described apparatus, only the shift in the x direction and the y direction of the subject image formed on the imaging surface of the solid-state imaging device 2 is corrected. That is, the shift correction for the translation component of the subject image is performed. The shift correction is realized by the displacement of the photographing optical lens 1.

However, to correct the optical positional relationship between the imaging optical lens 1 and the imaging surface of the solid-state imaging device 2 with respect to the subject,
It is also possible to displace the solid-state imaging device 2. In addition, since there is a rotational deviation in the displacement of the subject image, it is better to perform correction for the rotational deviation to obtain more resolution (resolution).
It is possible to perform high-quality shooting.

FIG. 5 is a schematic configuration diagram of a main part showing an embodiment of the present invention based on such a viewpoint. Here, the same parts as those of the apparatus shown in FIG. 1 are denoted by the same reference numerals.

The feature of this embodiment is that the solid-state imaging device 2 is supported via an xyθ actuator 20 which can be displaced in the x direction and the y direction, respectively, and which can be rotationally displaced about its optical axis M. The control system of the unit 21 is configured to control the displacement of the solid-state imaging device 2 with respect to the imaging optical lens 1 in the x direction, the y direction, and the θ direction.

In other words, the control system in this embodiment is arranged such that, for example, as shown in FIGS. 6 (a) and 6 (b), the image pickup surface of the solid-state image pickup device 2 has an optical center (optical axis) M as a center. Two regions L and R are set, and the shift amount of the subject is detected independently for each of these regions L and R. According to the shift amount in each of these regions L and R, the x direction and the y direction of the entire subject image are , And a rotational displacement θ about the optical axis M.

Specifically, the shift between the subject image signals repeatedly obtained from each of the regions L and R is obtained by the correlation calculation as described above with reference to the center position in each of the regions L and R, and the subject in the region L is obtained. The shift amounts dx _L and dy _L and the shift amounts dx _R and dy _R of the subject in the region R are obtained, respectively.

Here, the displacement vector of the subject in the area L indicated by the displacement amounts dx _L and dy _L is represented by f _L , and the displacement amounts dx _R and dy _R
Vector f _R of the deviation of the subject in the in the region R shown
Then, the vectors f _L and f _R of these shifts are equal to the optical axis M.
7, the sum of the rotational motion vector components R _L , R _R and the translation vector component S of the angle θ around the angle θ, that is, the vector sum f _L = R _L + S, f _R = R _R + S as shown in FIG. Can be caught. Incidentally, the rotational movement vector components R _L, R _R is caused by the camera inclination, etc. with the shutter release operation.

Since the shift amounts in the respective regions L and R obtained in this manner are basically symmetrical with respect to the optical axis M, the difference between the rotation vector components R _L and R _R is R _L + R. _The relationship of _R = 0 holds. As a result, as is clear from the vector diagram schematically shown in FIG. 7, the displacement vector of the entire subject image is represented by: parallel movement amount; S = (f _L + f _R ) / 2 rotation movement amount; R _L = (F _L −f _R ) / 2. Therefore, if the parallel movement amount S is decomposed in the x direction and the y direction, it is possible to determine the displacement amounts of the subject image in the x direction and the y direction, respectively, and the displacement can be corrected as described above. Becomes

At the same time, the correction for the rotational deviation is performed according to the rotational deviation amount of the subject image. As a result, the shift correction with respect to the subject image is performed with higher accuracy.

That is, in this embodiment, a digitally converted luminance signal Y of a subject image signal which is repeatedly imaged at a high speed by the solid-state imaging device 2 is guided to the area switch 22 and the above-described subject image signals of the respective regions L and R ( (Partial image signals). Then, the first one frame of the image signal of each of the regions L and R is stored in the frame memories 7L and 7R, respectively, and thereafter, the signals of the regions L and R read out from the solid-state imaging device 2 repeatedly at a high speed. The two-dimensional correlation circuits 8L and 8R respectively perform a correlation operation between them. The shift amounts (vectors) f _L (dx _L , dy _L ) and f _R (dx _R , dy _R ) in the respective regions L and R are obtained by the correlation operation in these two-dimensional correlation circuits 8L and 8R, respectively. become.

Therefore, as described above, the series of the shift amounts f _L (dx _L , dy _L ) and f _R (dx _R , dy _R ) obtained from the subject image signals of the regions L and R repeatedly obtained at high speed are interpolated. Circuit 9
After performing interpolation processing through Lx, 9Ly, 9Rx, and 9Ry, respectively, and detecting a shift amount with an accuracy equal to or less than a pixel unit, information about these shift amounts is input to subtractors 23a, 23b and adders 23c, 23d, The amount of rotation shift and the amount of translation shift are obtained, respectively.

Specifically, dx _L −dx _R and dy _L −dy _R are obtained by subtracters 23a and 23b, respectively, and these values are halved by coefficient units 24a and 24b, respectively. At 25 The following calculation is performed to obtain the rotational deviation | _RL |. However,
Here, _RL is a vector amount, and the rotational deviation amount is a scalar amount, so | _RL | is obtained. Then, the actuator drive unit 21 is controlled in accordance with the rotation deviation amount | R _L |
The xyθ actuator 20 is driven. By driving the xyθ actuator 20, the solid-state imaging device 2 is rotationally displaced around its optical axis to correct for rotational deviation.

On the other hand, the adder 23c, dx _L + dx _R from the respective shift amounts at 23d, the dy _L + dy _R respectively obtained. Then, these values are converted to coefficient coefficients 24c, 24c.
By halving each in d, the translation amount components are obtained in the x and y directions, respectively.

The actuator driving unit 21 is operated in accordance with the amount of deviation obtained in this manner, and the xyθ actuator 20 is driven to move the solid-state imaging device 2 in the x direction and y direction.
To correct the parallel displacement of the subject image.

By constructing such a control system, not only the displacement in the xy direction of the subject image formed on the imaging surface of the solid-state imaging device 2 but also the rotational displacement thereof can be effectively corrected, and the resolution without so-called image blur can be obtained. It is possible to perform high-quality shooting.

In the above-described embodiment, the translation amount and the rotational movement amount of the entire image are obtained in accordance with the results of the detection of the shift amounts in the two left and right regions L and R around the optical axis M in the imaging screen by the solid-state imaging device 2. Focus on any one point in the above image
It is also possible to obtain the amount of displacement in the xy direction and the amount of rotational displacement.

In this case, for example, the control system is configured as shown in FIG. That is, two frame memories 7a and 7b for storing a luminance signal Y of a subject image signal captured by the solid-state imaging device 2 are provided, and the first frame memory 7a stores an image signal of a first frame. Also a second frame memory
7b stores the image signals of the second and subsequent frames one after another.

Then, an address control unit is provided from the second frame memory 7b.
Under the control of 27, an image signal at an arbitrary position is read, and a rotation angle θ at which the correlation with the image signal stored in the first frame memory 7a is maximized by the rotation angle detection unit 26, The correlation value φ _(θ) is obtained. Specifically, the image signal stored in the first frame memory 7a by the rotation angle detection unit 26 and the image at an arbitrary position (x, y) read from the second frame memory 7b under address control A correlation operation with the signal is performed, and the output rotation angle θ and the correlation value φ _(θ) are monitored by the peak detector 28, and the rotation angle θ when the correlation value φ _(θ) becomes the maximum is calculated. It is obtained as the amount of rotation deviation. At this time, the position (x, y address) of the image signal read from the second frame memory 7b is determined as the amount of translation in the xy direction.

The solid-state imaging device 2 is displaced by driving the XYθ actuator 20 by operating the above-described actuator driving unit 21 using the rotation deviation amount θ thus obtained and the deviation amount in the xy direction, and The shift correction is performed.

Here, the calculation of the rotation angle detection in the rotation angle detection unit 26 will be briefly described.

Now, _assume that the image stored in the first frame memory 7a is f1 _{(r1, θ1)} , and the image stored in the second frame memory 7b is f2 _{(r2, θ2)} . Assuming that the images obtained by integrating these images in the radial direction are f1 'and f2', these integrated images f1 'and f2' are expressed as follows.

Thus the first image f1 _{(r1, θ1)} a second image _{f2 (r2, θ2)} with respect to when the assumed to be rotated by an angle theta _0, the correlation output between these images φ _(θ) = f1 '(θ) * f2' (θ) is the maximum angle θ becomes the angle θ _0. Therefore, if the angle θ at which the correlation value between the images becomes maximum is obtained,
The angle θ indicates the amount of rotational deviation between the two images described above. Note that this correlation operation can be realized by a one-dimensional operation, and can be easily executed with a relatively small amount of calculation.

In the case where such a shift amount is detected using an image sensor dedicated to shift detection, for example, as shown in FIG. 9, a pixel array capable of adding and outputting the picked-up image signals in the radial direction. What is necessary is just to use the solid-state image sensor which has (imaging array structure).

For such rotation angle detection, see, for example, the following document “Casasent D and D. Psaltis (1976)“ Position, Rotat.
ion and scale invariant optical correction "Appl.Op
t.15 1705-1799 ”and the like can be realized by applying a two-dimensional Mellin transform.

Note that the present invention is not limited to the above-described embodiment. For example, a method of detecting a shift of the subject image and a method of correcting the shift may be appropriately combined with the methods described in the embodiments. When the photographing lens is configured to be detachable, a function for displacing the photographing optical lens 1 can be built in the photographing lens side, but it can also be incorporated in a lens mount portion or the like on the body side. It is possible. Further, a solid-state imaging device for detecting a shift of a subject image may be individually incorporated in the photographing lens side, but it is of course possible to fixedly provide the solid-state imaging device in the body side.

In addition, the housing structure of the camera device main body may be doubled, and the shift correction may be performed by integrally displacing the photographing optical lens 1 and the solid-state image sensor with respect to the subject. It is also possible to electronically correct the image signal.

Furthermore, it is also possible to use a randomly accessible imaging device and selectively read out the partial images of the regions L and R described above. In addition, if a non-destructive solid-state imaging device is used and the imaging signal is accumulated by the solid-state imaging device itself, the above-described cumulative addition processing of the image signal using the adder and the frame memory is unnecessary. Becomes In addition, the present invention can be variously modified and implemented without departing from the gist thereof.

[Effects of the Invention] As described above, according to the present invention, the amount of deviation between the two left and right regions L and R about the optical axis of the photographing optical lens is a point of interest about the optical axis M. Focus on these two
One of the basis of the vector f _L and f _R of the deviation of the subject obtained for each region, determine the translation vector S and rotational movement vectors R, shooting on the basis of these translation vector S and the rotational moving vector R optical The optical positional relationship between the lens and the image plane of the image sensor is displaced to correct the displacement of the subject image formed on the image plane of the image sensor, so that the image is formed on the image plane by a simple calculation. The displacement of the subject image can be determined with high accuracy, and high-resolution shooting can be easily performed based on the displacement of the subject image.

[Brief description of the drawings]

The figure shows the electronic camera device according to the present invention,
FIG. 1 is a schematic diagram of a main part of an apparatus related to the present invention, and FIG.
FIG. 3 is a diagram showing an image signal obtained from a solid-state image sensor, FIG. 3 is a diagram for explaining a shift amount obtained from a signal correlation, FIG. 4 is a diagram showing operation timing of the embodiment device, and FIG. FIG. 6 is a schematic configuration diagram of an apparatus according to an embodiment of the present invention, FIG. 6 is a diagram showing a relationship between partial image regions for detecting a shift in the embodiment of the present invention, and FIG. FIG. 8 is a diagram for explaining the principle of detection of a shift amount using a signal, FIG. 8 is a schematic configuration diagram of a main part of another device related to the present invention, and FIG. It is a figure showing the example of composition. 1 ... optical lens, 2 ... solid-state image sensor, 3x, 3y ...
... actuator, 5 ... video processor, 6a, 6b, 6c
…… A / D converter, 7,7L, 7R, 7a, 7b …… Frame memory, 8,
8L, 8R ... 2D correlation circuit, 9x, 9y, 9Lx, 9Ly, 9Rx, 9Ry ...
Interpolation circuits, 10x, 10y ... Actuator drive units, 11a, 11
b, 11c: Frame memory, 12a, 12b, 12c: Adder, 13
…… Memory controller, 14… P / S converter, 15… Compressor, 20… xy θ actuator, 21… Actuator drive unit, 22… Area switcher, 23a, 23b… Subtractor, 2
3c, 23d …… Adder, 24a, 24b, 24c, 24d …… Coefficient unit, 25…
... Rotation amount detection unit, 26 ... Rotation angle detection unit, 27 ... Address control unit, 28 ... Peak detection circuit.

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-61-248681 (JP, A) JP-A-1-154684 (JP, A) JP-A-3-68916 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) H04N 5/222-5/243

Claims (1)

(57) [Claims] An image pickup element for electronically picking up an image of a subject; an imaging optical lens for forming an image of the object on an image pickup surface of the image pickup element; Device driving means for repeatedly performing various image capturing operations; and two left and right regions L and R centered on the optical axis of the photographing optical lens are set on the imaging surface of the image sensor. means for determining a vector f _L and f _R of the deviation, based on the vector f _L and f _R of the deviation, the rotation motion vector around the translation vector S and the optical axis in a plane perpendicular to the optical axis Means for determining R, said translation vector S and said rotation vector R
An electronic camera device comprising: a correction unit configured to correct a displacement of a subject image formed on an imaging surface of an imaging element based on the following.