JP2892685B2 - Motion detection circuit and camera shake correction device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motion detection circuit for detecting a motion of an image caused by a camera shake, and a camera shake correction device for performing a camera shake correction using the motion detection circuit.

2. Description of the Related Art As a conventional image stabilization apparatus, there is, for example, an apparatus described in TV Society Technical Report VOL.11, NO.3 (MAY, 1987).

FIG. 22 is a block diagram of a conventional camera shake correction apparatus. In FIG. 22, reference numeral 2201 denotes an A / D conversion circuit;
Is a motion vector detection circuit, 2203 is a memory control circuit, 2204
Is a memory circuit, 2205 is an interpolation control circuit, 2206 is an interpolation circuit,
Reference numeral 2207 denotes a D / A conversion circuit.

In the conventional camera shake correction apparatus configured as described above, the input signal Vin becomes a digital signal in the A / D conversion circuit 2201, and the motion vector detection circuit 2202 and the memory circuit 2204
The motion vector detection circuit 2202 compares the video signals of two fields to detect a motion vector, and the memory control circuit 2203 uses the motion vector to detect the motion vector.
The memory output signal is obtained as a video signal by an interpolation circuit 2206 controlled by an interpolation control circuit 2205, and the analog signal Vou is output by a D / A conversion circuit 2207.
t.

The operation of the motion vector detection circuit 2202 at this time will be described with reference to FIGS. 23 and 24 (A) and (A). FIG. 23 is a layout diagram of representative points in a representative point matching method as a method of detecting a motion vector. FIG. 24 shows an example of the relationship between a representative point and a comparison area. FIG. 23 shows a case in which 24 horizontal 6 × vertical 4 = 24 representative points are arranged in four regions. FIG. 24 shows (A) a case where the comparison areas for each representative point are independent, and (A) a case where the comparison areas for each representative point overlap.

As described above, the arrangement of the representative points and the arrangement of the comparison area are determined, and the motion vector is detected to perform the camera shake correction.

SUMMARY OF THE INVENTION However, in the above configuration, since the motion vector detection is performed with the same representative point arrangement and the same comparative area arrangement for many object states, the optimal representative state according to the object state is not always required. There is a problem that effective camera shake correction cannot be performed because the point arrangement and the comparison area arrangement are not performed.

In view of the foregoing, the present invention provides a motion detection circuit that can always detect a motion vector in an optimal state, in which the arrangement of the representative points and the arrangement of the comparison area of the motion vector detection circuit 2202 change depending on the state of the subject. An object of the present invention is to provide a camera shake correction device that corrects camera shake.

Means for Solving the Problems The present invention provides a motion vector detecting circuit, a representative point control circuit for controlling a representative point position, and a representative point setting for setting a representative point in the motion vector detecting circuit based on control of the representative point control circuit. A motion detection circuit including a circuit and a representative point pattern generation circuit for generating a pattern of a representative point selected by the photographer in accordance with the state of the subject or a subject condition detection circuit for detecting shooting information or luminance level information; This is a camera shake correction apparatus in which a memory circuit and a memory control circuit are added to a motion detection circuit.

According to the present invention, the video signal of the subject of interest is controlled by the representative point control circuit based on the representative point input command from the representative point pattern generation circuit or the subject condition detection circuit that detects the photographing information or the luminance level information. By excluding the setting of the representative points for the low-contrast and low-S / N video signals, the representative-point setting circuit sets the optimum arrangement of the representative points and the arrangement of the comparison area according to the state of the subject.

FIG. 1 is a block diagram of a motion detection circuit and a camera shake correction device according to a first embodiment of the present invention. The motion detection circuit has a configuration included in the camera shake correction device. In the description, the camera shake correction device will be described. Here, the first embodiment will be described as a technology that is a premise of the present invention. 101 is a lens, 1
02 is a CCD which is a solid-state image sensor, 103 is an analog-to-digital conversion circuit (hereinafter, referred to as an A / D conversion circuit), and 104 is a two-field video signal which is an output signal of the A / D conversion circuit 103. Motion vector detection circuit to obtain a motion vector
105 is a memory control circuit for controlling a memory, 106 is a memory circuit for storing video signals, 107 is a digital-analog conversion circuit (hereinafter, referred to as a D / A conversion circuit), and 108 is a representative necessary for obtaining a motion vector. A representative point control circuit for controlling points,
109 is a representative point setting circuit that sets a representative point controlled by the representative point control circuit 108, 110 is a representative point position display circuit that displays the representative point set by the representative point setting circuit 109, 11
1 is a representative point input circuit specified by the user.

FIG. 2 is a diagram showing the position on the screen of the representative point input by the representative point input circuit 111.

The operation of the image stabilizing apparatus according to the present embodiment configured as described above will be described below. When the motion vector detection circuit 104 obtains a motion vector by relatively comparing two fields of video signals, the user inputs a representative point using the representative point input circuit 111 according to the state of the subject at that time. An example is shown in FIG. In Fig. 2, ○ indicates the first designated point, □
Indicates a second designated point. For example, when the lower part of the subject is a sea wave, the motion vector detection is likely to be inaccurate in the lower part, so the first designated point ○ is used as the position of the representative point. Similarly, for example, when the upper part of the subject is a blank area, the motion vector detection is likely to be inaccurate in the upper part, so the second designated point □ is used as the position of the representative point. As described above, while the positions of the subject and the representative point are checked by the representative point position display circuit 110, the representative point input circuit 111
Enter the optimal representative point with.

As described above, according to the present embodiment, by providing the representative point input circuit and inputting the optimum representative point according to the state of the subject, an accurate motion vector can be detected in any case of the subject. It is possible to perform effective camera shake correction.

Here, in the first embodiment, the motion detection circuit includes a motion vector detection circuit 104, a representative point setting circuit 109, a representative point control circuit 108, a representative point input circuit 111, and a representative point position display circuit 110. Have been.

FIG. 3 is a block diagram of a camera shake correction apparatus according to a second embodiment of the present invention. In the figure, reference numerals 301 to 310 are the same as 101 to 110 in FIG. 1 in the first embodiment, except for a representative point pattern generation circuit 311. Hereinafter, the first
The following description focuses on differences from the embodiment.

FIGS. 4A to 4K are examples of pattern diagrams of the positions of the representative points generated by the representative point pattern generation circuit 311 shown in FIG. In FIG. 4, (A) and (B)
Is suitable when there is a moving subject in the center, and (c) is suitable when a motion vector can be detected in the entire screen. (D) or (E) is suitable when it is difficult to detect a motion vector in the lower or upper part as described in the first embodiment. (F) or (g) is suitable when it is difficult to detect a motion vector such as a wall on the right or left side. (H) is suitable when there is a moving subject in the lower right part. Since a representative point pattern suitable for such a subject is determined, the representative point pattern generation circuit 311 generates an optimum representative point pattern while checking the representative point pattern and the subject in the representative point position display circuit 310.

As described above, according to the present embodiment, the representative point pattern generation circuit 311 is provided, and the operator can easily determine what kind of subject by easily generating and selecting the optimal representative point pattern according to the state of the subject. In this case, an accurate motion vector can be detected, and effective camera shake correction can be performed.

Here, in the second embodiment, the motion detection circuit includes a motion vector detection circuit 304, a representative point setting circuit 309, a representative point control circuit 308, a representative point pattern generation circuit 311 and a representative point position display circuit. It consists of 310.

FIG. 5 is a block diagram of a camera shake correction apparatus according to a third embodiment of the present invention. In the figure, 501 to 509 are the first
This embodiment is the same as 101 to 109 in FIG. 1 except for a representative point / ranging zone display circuit 510, a focus control circuit 511, and a focus circuit 512. Hereinafter, points different from the first embodiment will be mainly described.

6 and 7 show a representative point / ranging zone display circuit 510.
FIG. 5 is a diagram showing an example of a relationship between a representative point and a distance measurement zone signal displayed by the symbol. In addition, the ranging zone indicates the range where the subject is in focus.When the subject of interest is small, the ranging zone is small, and when the subject moves well, the ranging zone is enlarged to improve focus accuracy. It is to let.

In FIG. 6, A (large) and B are used as distance measurement zones.
(Small). The relationship between the ranging zone and the representative point is such that if the ranging zone changes from B (small) to A (large) when the representative point area is set at the position indicated by ○, the representative point area is also located outside. Move to the area indicated by the mouth. By associating the distance measuring zone with the representative point in this way, when the distance measuring zone is large, the region of the representative point is arranged outside to eliminate erroneous detection of the motion vector due to the motion of the subject, and to detect the motion vector. Accuracy can be improved.

FIG. 7 also shows A (large) and B (small) as the distance measurement zones. The relationship between the ranging zone signal and the representative point is A
In the case of, the representative point is the area indicated by ○, and in the case of B, the representative point is both the area indicated by ○ and □. By associating the distance measurement zone with the representative point in this way, when the distance measurement zone is large, the area of the representative point is arranged outside to eliminate erroneous detection of a motion vector due to the movement of the subject, and when the distance measurement zone is small. The representative point areas are arranged on the outside and inside, so that a large number of representative point areas can be obtained, and the accuracy of motion vector detection can be improved.

As described above, the subject condition such as the size of the subject of interest is detected, and the focus control circuit 511 (=
Since the arrangement of the representative points is determined using the ranging zone signal from the subject condition detection circuit), the representative point / ranging zone display circuit
At 510, an optimal representative point can be obtained only by checking the representative point, the ranging zone, and the subject.

As described above, according to the present embodiment, the focus control circuit
By determining the optimal representative point according to the state of the subject using the ranging zone signal from 511, an accurate motion vector can be detected, and effective camera shake correction can be performed.

Here, in the third embodiment, the motion detection circuit includes a motion vector detection circuit 504, a representative point setting circuit 509, a representative point control circuit 508, a focus control circuit (subject condition detection circuit) 511, and a representative point position. It comprises a display circuit 510.

FIG. 8 is a block diagram of a camera shake correction apparatus according to a fourth embodiment of the present invention. In the figure, 801 to 809 are the first
This embodiment is the same as 101 to 109 in FIG. 1 except for a representative point / luminance pattern display circuit 810, a luminance block detection circuit 811, an aperture control circuit 812, and an aperture circuit 813.
Hereinafter, points different from the first embodiment will be mainly described.

FIG. 9 shows the relationship between a luminance block obtained by dividing the screen into a plurality of blocks for aperture control and a representative point. FIG. 9 shows a case where the screen is divided into 25 blocks as luminance blocks, and a representative point is present in 16 of the 25 blocks. Next, FIG. 10 shows a luminance level state of the 25 luminance blocks described above. In FIG. 10, among the luminance blocks, the (5.5) and (5.4) blocks have very high luminance levels (corresponding to the portion where the sun is present), and (1.1)
The block indicates a part where the luminance level is very low (corresponding to the shade). Since the signal contrast is low in the portion where the luminance level is very high, and the S / N of the signal is low in the portion where the luminance level is very low, the detection of the motion vector tends to be inaccurate. Therefore, when the luminance level of a luminance block is equal to or lower than a certain level, motion vector detection is not performed using a representative point in the luminance block, or automatically when a representative point in the luminance block is set. By moving the setting position of the representative point to a luminance block whose luminance level is within a certain range, the luminance of motion vector detection can be improved.

As described above, the subject condition such as the brightness level of the subject is detected, and the brightness block detecting circuit 811 (=
Since the position of the representative point is determined or moved using the luminance level signal of the luminance block from the subject condition detection circuit),
An optimal representative point can be obtained only by checking the representative point, the luminance pattern, and the subject in the representative point / luminance pattern display circuit 810.

As described above, according to the present embodiment, an accurate motion vector is detected by determining an optimal representative point according to the state of a subject using the luminance level signal of the luminance block from the luminance block detection circuit 811. And effective camera shake correction can be performed.

Here, in the fourth embodiment, the motion detecting circuit includes a motion vector detecting circuit 804, a representative point setting circuit 809, a representative point control circuit 808, a luminance block detecting circuit (subject condition detecting circuit) 811 and a representative point. -It is composed of a luminance pattern display circuit 810.

FIG. 11 is a block diagram of a camera shake correction apparatus according to a fifth embodiment of the present invention. In the figure, 1101 to 1109 are the same as 101 to 109 of FIG. 1 in the first embodiment,
The differences are a representative point / zoom ratio display circuit 1110 and a zoom control circuit 1111 and a zoom circuit 1112. Hereinafter, points different from the first embodiment will be mainly described.

FIGS. 12 and 13 show representative points when using the zoom circuit 1112.
14 shows an example of representative points displayed by the zoom ratio display circuit 1110. In FIG. 12, representative points are indicated by Δ, □ and ○. The relationship between the zoom ratio and the representative point is that when the zoom ratio changes from (small) to (large), the subject of interest also changes greatly. Change. By associating the zoom ratio with the representative point in this way, when the zoom ratio is large, the area of the representative point is moved to the outside to eliminate erroneous detection of the motion vector due to the motion of the subject, and the accuracy of the motion vector detection Can be improved. Also, in FIG. 13, representative points are indicated by △, □, and ○. The relation between the zoom ratio and the representative point is that when the zoom ratio changes from (small) to (large), the subject to be noticed also changes greatly.
And three regions indicated by ○ and two regions indicated by □ and さ ら に, and only one region indicated by ○. By associating the zoom ratio with the representative point in this way, when the zoom ratio is large, the area of the representative point is moved outward to eliminate erroneous detection of a motion vector due to the movement of the subject, and when the zoom ratio is small, The representative point areas are arranged on the outside and inside, so that a large number of representative point areas can be obtained, and the accuracy of motion vector detection can be improved.

As described above, the object condition of the amount of change of the object of interest is detected, and the arrangement of the representative point is determined using the zoom ratio signal from the zoom control circuit 1111 (= object condition detection circuit) corresponding to the object. An optimum representative point can be obtained only by checking the representative point, the zoom ratio, and the subject in the zoom ratio display circuit 1110.

As described above, according to the present embodiment, the zoom control circuit 1111
By determining the optimum representative point according to the state of the subject using the zoom ratio signal from the camera, an accurate motion vector can be detected, and effective camera shake correction can be performed.

Here, in the fifth embodiment, the motion detection circuit includes a motion vector detection circuit 1104, a representative point setting circuit 1109, a representative point control circuit 1108, a zoom control circuit 1111 (subject condition detection circuit), and a representative point. -It is composed of a zoom ratio display circuit 1110.

FIG. 14 is a block diagram of a camera shake correction apparatus showing the embodiment of FIG. 6 of the present invention. In the figure, reference numerals 1401 to 1409 are the same as 101 to 109 in FIG. 1 in the first embodiment, and are different in a representative point / comparison area display circuit 1410, a comparison area control circuit 1411 and a comparison area setting circuit 1412. is there. Less than,
The following description focuses on the differences from the first embodiment.

FIGS. 15A and 15B show an example of the relationship between a representative point, a comparison area, and a comparison pixel in the comparison area. Here, the comparison pixel is a pixel that performs arithmetic processing with the representative point.
Indicated by In FIG. 15A, the comparison pixels are arranged vertically and horizontally symmetrically in the comparison area of the representative point (only a quarter area is shown), and the comparison pixel interval of the arrangement is shown in FIG. In FIG. 3A, the comparison pixels are arranged around the representative point such that the pixel interval is logarithmic. In addition, a motion vector generated due to normal camera shake often exists within a certain range, and the larger the motion vector is, the smaller the probability of occurrence is. For this reason, comparative pixels are densely arranged around the representative point, and the comparative pixels are sparsely arranged farther from the representative point, thereby effectively detecting the motion vector in a limited number of comparative pixels, that is, a limited circuit scale. can do.

As described above, the comparison area control circuit 1411
At 1412, the representative point / comparison area display circuit 1410 checks that the comparative pixels around the representative point are arranged logarithmically.

As described above, according to the present embodiment, the comparison region control circuit 14
11 and the comparison area setting circuit 1412, the generation of the motion vector is established, that is, by arranging the comparison pixels in consideration of the relationship between the subject and the motion vector, it is possible to efficiently detect the motion vector in a limited circuit scale. It is possible to perform effective camera shake correction.

Here, in the sixth embodiment, the motion detection circuit includes a motion vector detection circuit 1404, a representative point setting circuit 1409, a representative point control circuit 1408, a comparison area setting circuit 1412, a comparison area control circuit 1411 and a representative A point / comparison area display circuit 1410 is provided.

FIG. 16 is a block diagram of a camera shake correction apparatus according to a seventh embodiment of the present invention. In the figure, reference numerals 1601 to 1612 are the same as 1401 to 1412 in FIG. 14 in the embodiment of FIG. 6, except for a comparison area pattern generation circuit 1613 and a comparison area input circuit 1614. Hereinafter, the points different from the sixth embodiment will be mainly described.

FIGS. 17A to 17C are pattern diagrams of the position of the comparison region generated by the comparison region pattern generation circuit 1613 shown in FIG. 16 and the pattern diagram of the position of the comparison region input by the comparison region input circuit 1614. This is an example. In FIG. 17, (A) is a pattern diagram of a motion vector detection / comparison region when it occurs during normal shooting, and (A) is a pattern diagram of a motion vector detection / comparison region when it occurs during walking and boarding. (A) The comparison pixels are densely arranged around the representative point to effectively detect a motion vector due to small camera shake. (A) The comparison area is widened around the representative point, and the sixth embodiment is performed. By arranging the comparison pixels logarithmically as shown in (2), the motion vector is efficiently detected in a limited circuit scale. (C) is a comparison area pattern diagram arranged by the external input circuit, and is an example of arrangement suitable for a motion vector detection comparison area when the motion of the camera shake is greater in the vertical direction than in the horizontal direction. As described above, the arrangement pattern of the comparison area and the comparison pixel is determined according to the movement of the camera shake.
At 10, the pattern of the comparison area generated by the comparison area pattern generation circuit 1613 is selected while checking the pattern of the representative point and the comparison area, or the optimum comparison area is input by the comparison area input circuit 1614 to determine the comparison area.

As described above, according to the present embodiment, the comparison region pattern generation circuit 1613 and the comparison region input circuit 1614 are provided, and by determining the optimum comparison region according to the state of camera shake,
An accurate motion vector can be detected in any case of camera shake, and effective camera shake correction can be performed.

Here, in the seventh embodiment, the motion detection circuit includes a motion vector detection circuit 1604, a representative point setting circuit 1609, a representative point control circuit 1608, a comparison area setting circuit 1612, a comparison area control circuit 1611, A comparison area pattern generation circuit 1613,
Comparison area input circuit 1614 and representative point / comparison area display circuit 16
Consists of ten.

FIG. 18 is a block diagram of an image stabilizing apparatus according to an eighth embodiment of the present invention. In the figure, 1801 to 1812 are the same as 1401 to 1412 in FIG. 14 in the sixth embodiment,
The differences are the zoom control circuit 1813 and the zoom circuit 1814. Hereinafter, the points different from the sixth embodiment will be mainly described.

FIGS. 19A and 19B are diagrams showing the relationship between the amount of camera shake when using the zoom circuit and the comparison area range required at that time. In the same figure, (A) is a WIDE time, (B) is a TELE time, (A) is a movement amount of a camera and a change amount of a shooting range due to camera shake, and (A) is a movement on a shooting screen at that time. The quantity, (c), indicates the required comparison area range at that time.
Thus, for the same camera shake amount, the required comparison area range differs between WIDE and TELE.

FIGS. 20A and 20B show an example of the positional relationship between a representative point and its comparison area when using a zoom circuit, particularly a two-focus type zoom circuit. (A) shows the relation between the representative point and the comparison area at the time of WIDE, and (A) and (C) show the relation between the representative point and the comparison area at the time of TELE. In (A), (A) and (C), the pixels in the comparison area to be compared with the representative point are indicated by ■. (A) In WIDE mode, the motion vector due to camera shake is often small.
YW) is small, while the motion vector due to camera shake is often large during TELE in (a), so the range of the comparison area (XT / YT) is large, and the zoom ratio and the comparison area are made to correspond. Improved detection of motion vectors. In the case of (C) TELE, the pixel to be compared is set every other line and every other pixel.
At E, the number of comparison pixels is equal, that is, the range of the comparison region can be made large with the same circuit scale, and the detection of the motion vector is efficiently improved by associating the zoom ratio with the comparison region.

FIGS. 21A to 21C show an example of a positional relationship between a representative point and a comparison area when a zoom circuit, particularly a continuous zoom type zoom circuit is used. (A) shows the representative point and the comparison area at the time of WIDE, (A) shows the relation between the representative point and the comparison area at the time of normal, and (C) shows the relation between the representative point and the comparison area at the time of TELE.
As described above, by continuously changing the arrangement of the comparison area and the comparison pixels according to the zoom ratio, the detection of the motion vector is improved by associating the zoom ratio with the comparison area.

As described above, since the comparison area and the comparison pixel arrangement with respect to the representative point are determined using the zoom control signal from the zoom control circuit 1813 according to the zoom ratio, the representative point / comparison area display circuit 1810 uses the representative point, the comparison area, and the subject. The optimal representative point and the comparison area can be obtained simply by checking.

As described above, according to the present embodiment, the zoom control circuit 1813
By determining the optimum comparison area according to the amount of movement of the camera shake using the zoom control signal from the camera, an accurate motion vector can be detected and effective camera shake correction can be performed.

Here, in the eighth embodiment, the motion detection circuit includes a motion vector detection circuit 1804, a representative point setting circuit 1809, a representative point control circuit 1808, a comparison area setting circuit 1812, and a comparison area control circuit 1811. It comprises a zoom control circuit 1813 and a representative point / comparison area display circuit 1810.

In the above embodiment, the interval between the representative points is not described, but is not particularly limited, and
The interval between the representative points may be changed occasionally along with the arrangement of the representative points.

Further, in the above embodiment, the same effect can be obtained when the signal processing method using the representative point matching method and the method using the angular velocity sensor are used together as the motion vector detection method.

Further, in each of the embodiments, an example of the arrangement of the representative points, and an example of the comparison area and the comparison pixel range have been described, but it is a matter of course that the present invention is not limited thereto.

Also, the case where a display circuit is provided to indicate the representative point and the ranging zone has been described.
(Electronic viewfinder) can also be used naturally.

Further, in the third embodiment, the case where the distance measurement zone has two patterns has been described, but the invention is not limited to this.

Further, in the fourth embodiment, 25 luminance blocks are used.
Although the case of the block has been described, the present invention is not limited to this, and the arrangement of the representative points in the block is not limited to the above-described 16 blocks.

Although only the comparison area and the comparison pixel arrangement have been described in the embodiments of FIGS. 6 to 8, the representative points shown in the first to fifth embodiments can be used in combination. It is.

Further, in the above embodiments, the first embodiment has a configuration including one function as in the case of an external input circuit, and the second embodiment has a configuration including one function as in the case of a representative point pattern generation circuit. A configuration including two or more functions may be considered, and a priority may be assigned to two or more functions.

Effects of the Invention As described above, according to the present invention, it is possible to set a representative point and a comparison area according to the state of a subject and a shooting state, and it is possible to improve the accuracy of detecting a motion vector. Then, effective camera shake correction can be performed by using the motion vector.

[Brief description of the drawings]

FIG. 1 is a block diagram of a camera shake correction apparatus according to a first embodiment of the present invention, FIG.
FIG. 4 is a block diagram of a camera shake correction apparatus according to a second embodiment of the present invention. FIGS. 4A to 4H are representative point arrangement diagrams of the embodiment, and FIG. 5 is a third embodiment of the present invention. 6 and 7 are arrangement diagrams of representative points of the embodiment, FIG. 8 is a block diagram of an image stabilizer of a fourth embodiment of the present invention, and FIGS. 10 is a diagram showing the arrangement of representative points of the embodiment, FIG. 11 is a block diagram of a camera shake correction apparatus according to a fifth embodiment of the present invention, and FIGS. 12 and 13 are diagrams showing the arrangement of representative points of the embodiment. FIG. 14 is a block diagram of a camera shake correction apparatus according to a sixth embodiment of the present invention.
FIG. 16A is a comparative pixel arrangement diagram of the embodiment, FIG. 16 is a block diagram of a camera shake correction apparatus of a seventh embodiment of the present invention, and FIG.
FIGS. 17 (a) to 17 (c) show the comparison area and comparison pixel arrangement of the embodiment, FIG. 18 is a block diagram of an image stabilization apparatus according to an eighth embodiment of the present invention, and FIGS. 19 (A) and 19 (B). ) Shows the relationship between the zoom circuit and the comparison area, and FIGS. 20 (a), (c), and FIG.
FIGS. 21 (a) to (c) show a comparison area and comparison pixel arrangement diagram of the embodiment, FIG. 22 is a block diagram of a camera shake correction apparatus of a conventional embodiment, and FIGS. 23, 24 (a) and (a). A) is a representative point arrangement diagram of the conventional example. 101: lens, 102: CCD, 103: A / D, 104: motion vector detection circuit, 105: memory control circuit, 106: memory, 107: D
/ A, 108: representative point control circuit, 109: representative point setting circuit, 110
... Representative point position display circuit, 111 ... Representative point input circuit.

 ────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-63-166370 (JP, A) JP-A-62-221284 (JP, A) JP-A-62-105587 (JP, A)

Claims (14)

(57) [Claims] 1. A motion vector detecting circuit for obtaining a motion vector by comparing two fields of a video signal relative to each other, a memory circuit for storing the video signal, and the memory circuit using a motion vector from the motion vector detecting circuit. A representative point control circuit for controlling a representative point position for obtaining the motion vector based on a representative point input command; and detecting the motion vector based on the control of the representative point control circuit. A representative point setting circuit to be set in the circuit, wherein the representative point input command is instructed from a representative point pattern generation circuit that generates a pattern of a representative point selected by a photographer in accordance with the state of the subject, and the representative point control command The circuit is
An image stabilizing apparatus for determining a position of a representative point effective for detecting a motion vector using the representative point pattern. 2. A motion vector detecting circuit for obtaining a motion vector by relatively comparing two fields of a video signal, a memory circuit for storing the video signal, and the memory circuit using a motion vector from the motion vector detecting circuit. A representative point control circuit for controlling a representative point position for obtaining the motion vector based on a representative point input command; and detecting the motion vector based on the control of the representative point control circuit. A representative point setting circuit for setting the representative point input command, the representative point input command is specified by a subject condition detecting circuit that detects photographing information indicating the position of the subject of interest or luminance level information, and the representative point control circuit Eliminates the setting of representative points for the video signal of the subject of interest or video signals with low contrast and low S / N using information or luminance level information It makes camera shake compensation device for determining the position of the effective representative points for motion vector detection. A focus control circuit for outputting a distance measurement zone signal indicating a range in which the subject is in focus, a zoom control circuit for outputting a zoom ratio signal corresponding to the subject, or a brightness of the subject. The representative point control circuit includes at least one of a luminance block detection circuit that outputs a luminance level signal representing a level, and a representative point control circuit uses an outer representative point as an effective representative point position when the ranging zone signal is wide. 3. The apparatus according to claim 2, wherein when the zoom ratio signal is large, an outer representative point is used as an effective representative point position, and a high-contrast representative point is used as an effective representative point position based on the luminance level signal. . 4. The apparatus according to claim 1, further comprising a representative point display circuit for displaying an output of the representative point setting circuit. 5. A motion vector detecting circuit for obtaining a motion vector by comparing two fields of a video signal relative to each other, a memory circuit for storing the video signal, and the memory circuit using a motion vector from the motion vector detecting circuit. A memory control circuit that controls the position of a representative point for obtaining the motion vector, a comparison point control circuit that controls a comparison area for obtaining the motion vector,
A representative point setting circuit that sets a representative point in the motion vector circuit based on the control of the representative point control circuit; and a comparison area setting circuit that sets the comparison area in the motion vector circuit. A camera shake correction device having a configuration in which comparison pixels are arranged in a logarithmic distribution. 6. A comparison area control circuit for outputting a comparison area set by a user, a comparison area pattern generation circuit for generating a pattern of the comparison area, or a zoom control for outputting a zoom ratio signal. 6. The apparatus according to claim 5, wherein the apparatus includes at least one of circuits. 7. The apparatus according to claim 5, further comprising a representative point / comparison area display circuit for displaying outputs of the representative point setting circuit and the comparison area setting circuit. 8. A motion vector detecting circuit for obtaining a motion vector by relatively comparing two fields of a video signal, and a representative point control circuit for controlling a representative point position for obtaining the motion vector based on a representative point input command. A representative point setting circuit that sets a representative point in the motion vector detection circuit based on the control of the representative point control circuit.
Commanded by a representative point pattern generation circuit that generates a pattern of representative points selected by the photographer according to the state of the subject,
A motion detection circuit for determining a position of a representative point effective for detecting a motion vector by using the representative point pattern. 9. A motion vector detecting circuit for obtaining a motion vector by relatively comparing two fields of a video signal, and a representative point control circuit for controlling a representative point arrangement for obtaining the motion vector based on a representative point input command. A representative point setting circuit that sets a representative point in the motion vector detection circuit based on the control of the representative point control circuit.
Instructed by a subject condition detection circuit that detects photographing information or luminance level information indicating the position of the subject of interest, the representative point control circuit uses the photographing information or luminance level information to generate a video signal or low contrast and low contrast of the subject of interest. A motion detection circuit that determines the position of a representative point effective for motion vector detection by eliminating the setting of a representative point for an S / N video signal. 10. A subject condition detecting circuit, a focus control circuit for outputting a distance measurement zone signal representing a range in which the subject is in focus, a zoom control circuit for outputting a zoom ratio signal corresponding to the subject, or a subject brightness The representative point control circuit includes at least one of a luminance block detection circuit that outputs a luminance level signal representing a level, and a representative point control circuit uses an outer representative point as an effective representative point position when the ranging zone signal is wide. 10. The motion detection circuit according to claim 9, wherein when the zoom ratio signal is large, an outer representative point is used as a valid representative point position, and a high-contrast representative point is used as a valid representative point position based on the luminance level signal. . 11. The motion detecting circuit according to claim 8, further comprising a representative point display circuit for displaying an output of the representative point setting circuit. 12. A motion vector detecting circuit for obtaining a motion vector by relatively comparing two fields of a video signal, a representative point control circuit for controlling arrangement of representative points for obtaining the motion vector, and a motion vector detecting circuit for obtaining the motion vector. A comparison area control circuit for controlling the comparison area, a representative point setting circuit for setting a representative point in the motion vector circuit based on the control of the representative point control circuit, and a comparison area for setting the comparison area in the motion vector circuit A motion detection circuit comprising a setting circuit, wherein the comparison area control circuit is configured to arrange comparison pixels in a logarithmic distribution. 13. A comparison area control circuit for outputting a comparison area set by a user, a comparison area pattern generation circuit for generating a pattern of the comparison area, or a zoom control for outputting a zoom ratio signal. 13. The motion detection circuit according to claim 12, wherein the motion detection circuit includes at least one of the circuits. 14. The motion detecting circuit according to claim 12, further comprising a representative point / comparison area display circuit for displaying outputs of the representative point setting circuit and the comparison area setting circuit.