JP2600520B2 - Image motion compensation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image motion compensating apparatus used for compensating hand shake of an image pickup apparatus.

[0002]

2. Description of the Related Art In photographing a subject using an image pickup apparatus, if the image pickup apparatus is directly held by hand or mounted on a moving body such as a vehicle, shaking during image pickup occurs on a screen. For this reason, an image motion compensating device that detects a shake of a screen and corrects the position of an image based on the shake information has been put to practical use .

The principle of operation of a conventional image motion compensator will be described. FIG. 9 is a block diagram showing a configuration of a conventional image motion correction device. In FIG. 1, a photoelectric conversion element 1 is an image pickup element, and converts an image via an optical system into an electric signal (hereinafter, referred to as an image signal). The analog signal processing circuit 2 performs signal processing on the video signal from the photoelectric conversion element 1, and the analog-digital conversion circuit 3 converts the video signal processed by the analog signal processing circuit 2 into a digital signal. Then, the converted signal is sent to the image motion detection circuit 4 and the field memory circuit 11.
The motion detection circuit 4 detects the motion of an image from the video signal from the analog-digital conversion circuit 4. The field memory circuit 11 records the video signal from the analog-digital conversion circuit 4. The field memory control circuit 10 controls the read address of the field memory circuit 11 according to the motion information obtained by the image motion detection circuit 4, that is, the motion of the input image. The video signal read from the field memory circuit 11 is subjected to digital signal processing by the digital signal processing circuit 8.

FIG. 10 shows an image motion detecting circuit 4 shown in FIG.
FIG. 3 is a block diagram showing a specific configuration of FIG. In the figure, a representative point storage circuit 1a divides a video signal of a current field input from a photoelectric conversion element 1 into a plurality of areas,
A video signal corresponding to a specific representative point in each area is stored as a representative point signal. Also, this circuit supplies a representative point signal of the previous field scanned one field before the current field to the correlation operation circuit 2a. Correlation operation circuit 2
“a” performs a correlation operation between the previous representative point signal and the video signal of the current field, and compares the difference between the previous representative point signal and the video signal of the current field. The output is supplied to the motion vector detection circuit 3a. The motion vector detection circuit 3a detects an image motion vector between the previous field and the current field from the calculation result of the correlation calculation circuit 2a.

The conventional image motion compensator constructed as described above is used.
In the primary device, the video signal of the current field obtained from the photoelectric conversion element 1 is transferred to the image motion detection circuit 4 and the field memory
Sent to 1. The image motion detection circuit 4 detects the motion of the image from the video signal, and moves the data read address of the field memory circuit 11 in accordance with the detected motion, thereby changing the image of the current field from the image due to hand shake or the like. Shaking removal has been done.

[0006]

In the [0005] However the above arrangement, inevitably field memory circuit for the hand shake correction Ri is necessary to name low image movement correcting device This
There was a problem that cost reduction was difficult . The present invention solves the conventional problems, and is less expensive than the conventional ones.
It is a technical object to propose an image motion compensating device which can be realized by the configuration .

Further, it can be realized with a configuration that is less expensive than the conventional one.
Improves the accuracy of image motion compensation with a powerful image motion compensator
Making it a technical issue.

[0008]

According to the present invention, an image motion prediction circuit and a photoelectric conversion element control circuit are newly provided instead of moving a signal read address of a field memory circuit to correct image fluctuation. Without using a field memory circuit and a field memory control circuit,
By moving the signal read address on the photoelectric conversion element, image fluctuation is corrected.

According to the present invention, an image motion prediction circuit and a photoelectric conversion element control circuit are newly provided instead of moving the signal read address of the field memory circuit to correct the image fluctuation. A motion that corrects image fluctuation by moving a signal read address on the photoelectric conversion element without using a memory control circuit, and integrates an image motion prediction vector obtained in each field to determine an actual read address. The accuracy of correction is improved by newly providing an integral vector correction circuit in the vector integration circuit.

Also, the present invention provides an image motion prediction circuit and a photoelectric conversion element control circuit instead of moving the signal read address of the field memory circuit to correct the image fluctuation. The motion vector generated by moving a signal read address on the photoelectric conversion element without using a memory control circuit to correct image shaking and reading a signal from the photoelectric conversion element only in line units. The accuracy of the correction is improved by providing a decimal part error correction circuit for correcting the error of (1).

[0011]

With the above arrangement, the image motion compensating apparatus of the present invention corrects image fluctuation by moving a signal read address on a photoelectric conversion element without using a field memory circuit and a field memory control circuit. Can be.

Further, according to the present invention, it is possible to correct image fluctuation by moving a signal read address on a photoelectric conversion element without using a field memory circuit and a field memory control circuit, and to improve the correction accuracy. it can.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an image motion compensating apparatus according to a first embodiment of the present invention. In FIG. 1, a photoelectric conversion element 1 converts an image via an optical system into an electric signal by an imaging element. The analog signal processing circuit 2 performs signal processing on the video signal from the photoelectric conversion element 1, and the analog-digital conversion circuit performs processing on the analog signal processing circuit 2.
Is converted into a digital signal. The image motion detection circuit 4 detects the motion of the image from the video signal from the analog-digital conversion circuit 3 and outputs the motion information of the image to the image motion prediction circuit 5. Image motion prediction circuit 5
Predicts the motion vector of the image one field ahead from the motion information of the image obtained by the image motion detection circuit 4 (hereinafter, referred to as
This motion vector is referred to as a motion prediction vector), and the motion prediction vector is output to the photoelectric conversion element control circuit 6.
The photoelectric conversion element control circuit 6 controls a signal read address on the photoelectric conversion element 1 based on the motion prediction vector of the image obtained by the image motion prediction circuit 5. The photoelectric conversion element driving circuit 7 is a circuit for driving the photoelectric conversion element 1. The digital signal processing circuit 8 is a circuit for performing digital signal processing on the video signal from the analog-digital conversion circuit 3.

Since the image motion detecting circuit 4 has the same configuration and operation as in FIG. 10 showing a conventional example, detailed description will be omitted. Hereinafter, in the description of the present embodiment, each circuit constituting the image motion detection circuit 4 is the same as each circuit in FIG.

FIG. 2 is a block diagram showing a specific configuration of the image motion prediction circuit 5 shown in FIG. In the figure,
The prediction operation circuit 2b is a circuit that predicts and calculates a motion vector one field ahead from a motion vector obtained up to the current field. The motion vector used here is an image motion prediction circuit that is one field before the field in each field. 5 is obtained by adding (or subtracting) the image motion information obtained by the motion detection circuit 4 in each field to the motion prediction vector obtained in step 5, which is an actual motion vector in each field. . The motion vector calculation circuit 1b calculates the actual motion vector in each field. By the way, the vector calculation circuit 1b
A motion prediction vector output from the prediction operation circuit 2b is stored in each field, and an actual motion vector between fields is obtained using the motion prediction vector and the image motion information obtained by the image motion detection circuit 4. Prediction operation circuit 2b
Predicts the motion vector of the image one field ahead using the motion vector value of the image obtained by the motion vector calculation circuit 1b. The motion vector integration circuit 3b is a prediction operation circuit 2
The motion prediction vector from b is integrated for each field (hereinafter, this is referred to as a motion prediction integration vector).

FIG. 3 is a block diagram showing a specific configuration of the prediction operation circuit 2b shown in FIG. In the figure, a delay circuit 1c is a delay unit for delaying a signal, and the delay time is one field of a video signal, that is, 1/60 second. The multiplying circuit 2c is a multiplier. In this embodiment, the input is multiplied by 2. The multiplication circuit 3c is a multiplier. In this embodiment, the input is multiplied by -1. The adder 4c adds the inputs from the multiplication circuits 2c and 3c and outputs the result.

FIG. 4 is a block diagram showing another specific configuration of the prediction operation circuit 2b shown in FIG. In the figure, a delay circuit 1d and a delay circuit 2d are both delay devices for delaying a signal, and the delay time is one field of a video signal, that is, 1/60 second. The multiplication circuit 3d is a multiplier. In this embodiment, the input is multiplied by 3.
The multiplication circuit 4d is a multiplier, and in this embodiment, the input is multiplied by 3. The multiplication circuit 5d is a multiplier. In this embodiment, the input is multiplied by -1. The adder 6d adds the inputs from the multiplication circuits 3d and 4d and outputs the result. The adder 7d adds the inputs from the multiplication circuit 5d and the adder 6d and outputs the result.

The operation of the image motion compensating apparatus according to the present embodiment configured as described above will be described below.

In the image motion detection circuit 4, the photoelectric conversion element 1
The correlation operation between the video signal of the current field obtained in step (1) and the representative point signal stored in the representative point storage circuit 1a among the video signals of the previous field is performed by the correlation operation circuit 2a. Detect movement. However, the obtained motion information of the image is a difference between the motion of the image predicted by the image motion prediction circuit 5 in the previous field and the actual motion of the image in the current field. That is, if the motion predicted by the image motion prediction circuit 5 is the same as the actual motion, the motion of the image obtained by the image motion detection circuit 5 is 0. The image motion information detected by the image motion detection circuit 4 is added (or subtracted) to the motion prediction vector in the previous field in the motion vector calculation circuit 1b, and is calculated as the actual motion vector of the current field with respect to the previous field. Sent to The prediction operation circuit 2b obtains a motion vector predicted in the next field from the input from the motion vector calculation circuit 1b, and sends this to the motion vector integration circuit 3b as a motion prediction vector.

At this time, as the first configuration, the prediction operation circuit 2b may be configured such that the actual motion vector of the current field with respect to the previous field obtained by the motion vector operation circuit 1b is used as it is as the motion prediction vector. Thus, it is possible to remove the low frequency component of the image fluctuation . Also,
As a second configuration, when the prediction operation circuit 2b has the configuration shown in FIG. 3, the input signal multiplied by 2 by the multiplication circuit 2c and the input signal multiplied by -1 by the multiplication circuit 3c via the delay circuit 1c are added. Adder 4c to obtain a motion prediction vector.
When the configuration shown in FIG. 4 is adopted as the configuration of the multiplication circuit 3d
Multiplication circuit 4 through the input signal multiplied by 3 and the delay circuit 1d
The input signal multiplied by -3 with d is added by an adder 6d, and the multiplication circuit 5 passes through a delay circuit 1d and a delay circuit 2d.
The input signal multiplied by 1 is added by the adder 7d to obtain a motion vector. In these cases, however, the actual motion vector of the current field with respect to the previous field is used as the motion prediction vector as it is, so that the motion of the image is reduced . High frequency components can be removed.

Using the motion prediction vector described above, the motion vector integration circuit 3b calculates the integrated value of the motion prediction vector obtained in each field. Then, the motion prediction integration vector is sent to the photoelectric conversion element control circuit 6, and the photoelectric conversion element control circuit 5 controls the video signal read address on the photoelectric conversion element 1 based on the motion prediction integration vector, The components are corrected on the photoelectric conversion element 1.

As described above, according to the present embodiment, the signal read address on the photoelectric conversion element 1 is moved by the image motion prediction data one field ahead predicted by the motion vector prediction circuit 5, whereby the field memory circuit Can be used to correct the motion of an image.

In this embodiment, it is apparent that the functions of the above circuits can be realized on software.

In this embodiment, when a photoelectric conversion element having a number of pixels for NTSC is used and the final video signal output is a signal of the NTSC system, the digital signal processing circuit uses electronic processing. The digital signal processing circuit has a configuration having a zoom function, and the digital signal processing circuit uses electronic processing even when a photoelectric conversion element having a number of pixels for PAL is used and a final video signal output is a PAL signal. The digital signal processing circuit is electronically processed when a pixel with a larger number of pixels, such as for PAL, than for NTSC is used and the final video signal output is an NTSC signal. And does not include a zoom function.

In the present embodiment, the motion information of the image detected by the image motion detecting circuit 4, the motion predicted vector predicted by the image motion predicting circuit 5, and the motion prediction integrated vector obtained by the motion vector integrating circuit 3b are calculated. Although no particular reference has been made to the accuracy, it is possible to provide them with an accuracy of one pixel or less. In this case, the digital signal processing circuit has a function of interpolating the video signal. Based on the motion prediction integration vector, the digital signal processing circuit generates a correction signal that has been motion-corrected with an accuracy of one pixel or less by the interpolation process. Can be generated.

In this embodiment, the image motion detection circuit 4 is the same as that of the conventional example, but is not limited to this.

Further, in the present embodiment, the prediction operation circuit 2b
Is described so as to use three configurations independently, but the present invention is not limited to this, and a method of adaptively switching the calculation results by the above three configurations is also conceivable. Further, in the configuration shown in FIG. 4 as the third configuration of the prediction operation circuit 2b, two adders are used, but it is clear that the same configuration is possible even with one.

Further, in the present embodiment, the detection of the motion of the image and the prediction of the motion of the image are all performed for each field. However, the present invention is not limited to this. .

Next, a second embodiment of the present invention will be described. The configuration of the second embodiment of the present invention is the same as the configuration of the first embodiment shown in FIG.
There is a difference in the internal configuration.

FIG. 5 is a block diagram showing a specific configuration of the image motion prediction circuit 5. In the figure, the prediction operation circuit 2b calculates 1 from the motion vector obtained up to the current field.
This is a circuit for predicting and calculating a motion vector at a field destination. The motion vector used here is a motion prediction vector obtained by the image motion prediction circuit 5 one field before the field in each field, and a motion detection circuit in each field. Add (or subtract) the image motion information obtained in step 4
This is the actual motion vector in each field. The vector calculation circuit 1b calculates the actual motion vector in each field. By the way, the vector calculation circuit 1b stores a motion prediction vector output from the prediction calculation circuit 2b in each field, and uses the motion prediction vector and the image motion information obtained by the image motion detection circuit 4 to calculate an actual field between fields. Find the motion vector of The prediction operation circuit 2b predicts a motion vector of an image one field ahead from the image motion vector obtained by the motion vector calculation circuit 1b. The motion vector integration circuit 3b integrates the motion prediction vector from the prediction operation circuit 2b for each field, and actually determines a video signal read address on the photoelectric conversion element 1. The integration vector correction circuit 4b corrects an error associated with prediction included in the value integrated by the motion vector integration circuit 3b from the result of the motion vector calculation circuit 1b.

The operation of the image motion compensating apparatus of the present embodiment configured as described above will be described below.

In the image motion detecting circuit 4, the photoelectric conversion element 1
The correlation operation between the video signal of the current field obtained in step (1) and the representative point signal stored in the representative point storage circuit 1a among the video signals of the previous field is performed by the correlation operation circuit 2a. Detect movement. However, the obtained motion information of the image is a difference between the motion of the image predicted by the motion prediction circuit in the previous field and the actual motion of the image in the current field. That is, if the motion predicted by the image motion prediction circuit 5 is the same as the actual motion, the motion of the image obtained by the image motion detection circuit 4 is zero. The image motion information detected by the image motion detection circuit 4 is added (or subtracted) to the motion prediction vector in the previous field in the motion vector calculation circuit 1b, and is calculated as an accurate motion vector value of the current field with respect to the previous field. Sent to The prediction operation circuit 2b obtains a motion vector predicted in the next field from the input from the motion vector calculation circuit 1b, and sends it to the motion vector integration circuit 3b. The motion vector integration circuit 3b calculates an integrated value of the motion vector. However, since the motion vector integrated here is a value predicted by the prediction operation circuit 2b, it is conceivable that an error generated during prediction is naturally included. Therefore, by correcting the motion prediction integration vector for each field using the actual motion vector of the current field obtained by the motion vector calculation circuit 1b, more accurate motion correction can be performed. 6 (in FIG. 6, the current field is n, the integrated value of the motion vector up to the current field is a vector _Sn , the motion prediction vector of the next field obtained in the current field is a vector y _{n + 1} , Let the actual motion vector of the current field be the vector v _n ,
And For simplicity, the description will be made specifically using a one-dimensional vector. A motion prediction vector obtained by performing an integration operation in the previous field (that is, a predicted value of the current field motion vector with respect to the previous field: FIG. 6) instead of the vector y _n), so that use in integrating the actual motion vectors for the previous field of the current field obtained by the motion vector calculation circuit 1b in the current field (vector v _n in FIG. 6). Then, the integrated value of the motion of the image up to the current field (the vector S _n ,
The motion prediction vector (vector y _{n + 1 in} FIG. 6) obtained by the prediction operation circuit 2b in the current field is added to the vector S _n = vector S _n-1 + vector v _n ). Determine the signal read address. Based on this determination, the photoelectric conversion element control circuit 6 controls the video signal read address on the photoelectric conversion element 1 and corrects the motion component of the video signal on the photoelectric conversion element 1.

As described above, according to this embodiment, by adding the integral vector correction circuit 4b to the image motion prediction circuit 5, the signal readout on the photoelectric conversion element 1 obtained by the image motion prediction circuit 5 can be performed with higher accuracy. Is high, whereby the motion of the image can be corrected with higher accuracy.

FIG. 7 is a block diagram showing an image motion compensating apparatus according to a third embodiment of the present invention. In this figure, the point that a decimal part error correction circuit 9 is newly provided is different from the configuration of the first and second embodiments shown in FIG. That is,
The decimal part error correction circuit 9 has a configuration in which the outputs of the image motion detection circuit 4 and the image motion prediction circuit 5 are input and the output is input to the image motion prediction circuit 5.

The decimal part error correction circuit 9 includes the photoelectric conversion element 1
This is a circuit for correcting an error in a decimal part due to the fact that a video signal can be read only from a line unit. The motion information of the image whose decimal part error has been corrected by the decimal part error correction circuit 9 is output to the image motion prediction circuit 5. The image motion prediction circuit 5 predicts the motion vector of the image one field ahead from the motion information of the image obtained by the image motion detection circuit 4 and corrected for the decimal part error by the decimal part error correction circuit 9. Then, a signal read address on the photoelectric conversion element 1 (movement prediction vector) is obtained from the predicted motion vector, and is output to the photoelectric conversion element control circuit 6. Further, since the image motion prediction circuit 5 has the same configuration and operation as the first embodiment, detailed description will be omitted.

The operation of the image motion compensating apparatus of the present embodiment configured as described above will be described below.

In the image motion detecting circuit 4, the photoelectric conversion element 1
The correlation operation between the video signal of the current field obtained in step (1) and the representative point signal stored in the representative point storage circuit 1a among the video signals of the previous field is performed by the correlation operation circuit 2a. Detect movement. However, the obtained motion information of the image is a difference between the motion of the image predicted by the motion prediction circuit in the previous field and the actual motion of the image in the current field. That is, if the motion predicted by the image motion prediction circuit 5 is the same as the actual motion, the motion of the image obtained by the image motion detection circuit 5 is 0. But,
The motion information of the image detected by the image motion detection circuit 4, the motion prediction vector predicted by the image motion prediction circuit 5, and the accuracy of the motion prediction integration vector obtained by the motion vector integration circuit 3b have an accuracy of one pixel or less. Although it is possible to read the video signal from the photoelectric conversion element 1 in practice, the video signal is read out on a line-by-line basis on the photoelectric conversion element 1. There is no problem if the obtained motion prediction integral vector value takes an integer value, but if it takes a value including a decimal number, that is, if correction of one pixel or less is also taken into account, the value is read with the fractional part truncated. When a correlation operation or the like is performed on the read video signals, an error due to the truncation of the decimal part is naturally included. This error will be specifically described with reference to FIG.
, The circles on the intersections of the solid-line lattices schematically represent the light-receiving portions on the photoelectric conversion element 1, and each light-receiving portion is v1, v2, v3,. The coordinates h1, h2, h3,... Are given from the left to represent the position. Frames A and B indicated by dotted lines are cutout frames including a decimal part determined by the motion vector prediction circuit 5, and the order is A first, then the next field B. First, when the frame A is designated by the image motion prediction circuit 5, it is actually impossible to read out a signal from between the light receiving units on the photoelectric conversion element 1, and in this case, the video signal Is started from the light receiving unit at (h4, v4). At this time, a difference represented by the vector u in FIG. 8 occurs between the reading frame on the photoelectric conversion element and the correction frame indicated by the motion integration vector. Subsequently, in the next field, in order to cut out the correction frame indicated by the frame B, reading of the video signal on the photoelectric conversion element is performed by (h
2, v1). At this time, there is a difference between the reading frame on the photoelectric conversion element and the correction frame indicated by the motion integration vector, which is represented by the vector v in FIG. At this time, since the motion detection circuit 4 detects the motion between the two fields by using the video signal from the photoelectric conversion element 1, the difference between the correction frame and the readout frame, and the vector u and the vector v are calculated as follows. Since it is not taken into account, the part corresponding to the difference between these two vectors is erroneously detected as a movement between two fields. By performing the correction for the erroneous detection by the decimal part error correction circuit 9, the motion vector of the next field in the image motion prediction circuit 5 can be more accurately predicted. The image motion information detected by the image motion detection circuit 4 and corrected by the decimal part error correction circuit 9 is added (or subtracted) to the predicted motion vector value in the previous field in the motion vector calculation circuit 1b, and is added to the current field with respect to the previous field. Is sent to the prediction operation circuit 2b as the actual motion vector value of Prediction calculation circuit 2
b calculates a motion vector predicted in the next field from the input from the motion vector calculation circuit 1b and sends it to the motion vector integration circuit 3b. Motion vector integration circuit 3b
Calculates the integral value of the motion vector (motion prediction integral vector). Then, the motion prediction integration vector of the image is sent to the photoelectric conversion element control circuit 6, and the photoelectric conversion element control circuit 5 controls the video signal read address on the photoelectric conversion element based on the image motion prediction integration vector, and Is corrected on the photoelectric conversion element 1.

It is needless to say that the same effect as in the second embodiment can be realized by adding the integral vector correction circuit 4b shown in the second embodiment to the image motion prediction circuit.

As described above, according to this embodiment, the correction of the error due to the fractional part truncation on the photoelectric conversion element 1 included in the image motion information between the two fields detected by the image motion vector detection circuit 4 is a decimal. By using the partial error correction circuit 9, the accuracy of the prediction of the motion of the image one field ahead in the image motion prediction circuit 5 can be further improved.

[0041]

As described above in detail, according to the present invention, when image motion compensation is performed on a video signal,
By providing the image motion prediction circuit for predicting the motion of the image ahead of the current field, it is possible to reduce the field memory circuit for storing the video signal which has been required conventionally, and Compared to the cheaper configuration
An image motion compensation device can be provided.

Further, when the motion of an image is corrected for a video signal, it is possible to improve the correction accuracy when the motion of the image ahead of the current field is predicted and corrected.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of an image motion correction device according to first and second embodiments of the present invention.

FIG. 2 is a block diagram showing a specific configuration of an image motion prediction circuit 5 in FIG.

FIG. 3 is a block diagram showing a specific configuration of a prediction operation circuit 2b in FIG. 2;

FIG. 4 is a block diagram showing a specific configuration of a prediction operation circuit 2b in FIG. 2;

FIG. 5 is a block diagram showing a specific configuration of an image motion prediction circuit 5 according to a second embodiment.

FIG. 6 is an explanatory diagram for explaining the operation of the integral vector correction circuit 4b in the second embodiment.

FIG. 7 is a block diagram illustrating a configuration of an image motion correction device according to a third embodiment of the present invention.

FIG. 8 is a decimal part error correction circuit 9 in the third embodiment.
Explanatory diagram for explaining the operation of

FIG. 9 is a block diagram illustrating a configuration of a conventional image motion correction device.

10 is a block diagram showing a specific configuration of the image motion detection circuit 4 in FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 photoelectric conversion element 2 analog signal processing circuit 3 analog-digital conversion circuit 4 image motion detection circuit 5 image motion prediction circuit 6 photoelectric conversion element control circuit 7 photoelectric conversion element drive circuit 8 digital signal processing circuit 9 decimal part error correction circuit 1b motion Vector calculation circuit 2b Prediction calculation circuit 3b Motion vector integration circuit 4b Integration vector correction circuit 1c, 1d, 2d Delay circuit 2c, 3c, 3d, 4d, 5d Multiplication circuit 4c, 6d, 7d Adder

 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-2-205183 (JP, A) JP-A-3-117278 (JP, A) JP-A-61-105178 (JP, A) JP-A-4- 216534 (JP, A)

Claims (5)

(57) [Claims] 1. A sequence of input images obtained from a photoelectric conversion element.
An image motion detection circuit that detects motion between successive fields or between frames , and outputs the motion as image motion information; and an image earlier than the current field or current frame from the image motion information obtained from the image motion detection circuit. An image motion prediction circuit that predicts the motion of the image, and a photoelectric conversion element control circuit that controls a signal read address of the photoelectric conversion element based on a prediction result of the image motion prediction circuit. The image motion information obtained from the image motion detection circuit and the previous field or the previous frame.
From the image motion estimation vector in the arm, before and the current field
A motion vector calculation circuit for calculating a motion vector between fields or between a current frame and a previous frame; and a motion vector obtained from the motion vector calculation circuit.
Between current field and next field or current frame
And a prediction operation circuit that calculates an image motion prediction vector between the next frame and the next frame, and integrates the image motion prediction vector obtained from the prediction operation circuit, and calculates the integrated value as the prediction result.
An image motion compensating device comprising a motion vector integrating circuit for outputting as a motion vector. 2. A prediction operation circuit comprising: a delay circuit for delaying an input signal for a predetermined period; a first multiplication circuit for multiplying the input signal by a coefficient; and a second multiplication circuit for multiplying an output of the delay circuit by a coefficient. 2. The apparatus according to claim 1, further comprising an adder for adding outputs of said first and second multiplication circuits. 3. A prediction operation circuit comprising: a first delay circuit for delaying an input signal for a predetermined period; a first multiplication circuit for multiplying the input signal by a coefficient; and a multiplication of an output of the first delay circuit by a coefficient. A second multiplying circuit, a first adder that adds the outputs of the first and second multiplying circuits, a second delay circuit that delays the output of the first delay circuit for a certain period, 2. A third multiplication circuit for multiplying an output of the second delay circuit by a coefficient, and a second adder for adding an output of the first adder and an output of the third multiplication circuit. 3. Image motion compensation device. 4. The image motion prediction circuit according to claim 1, wherein the image motion information obtained from the image motion detection circuit and a previous field.
Ku is between image motion predictive vector of the previous frame of the current and previous fields or the motion vector calculation circuit for calculating a motion vector between a current frame and the previous frame, the motion vector obtained from the motion vector calculation circuit,
From the current field to the next field, or
A prediction operation circuit that calculates an image motion prediction vector between a frame and a next frame; a motion vector integration circuit that integrates the image motion prediction vector obtained from the prediction operation circuit, and outputs the integrated value; of the integration circuit
2. The image motion compensating device according to claim 1, further comprising an integral vector compensating circuit for compensating an output integral value using a motion vector obtained from said motion vector computing circuit. 5. A sequence of input images obtained from a photoelectric conversion element.
An image motion detection circuit for detecting motion between successive fields or between frames and outputting the motion as image motion information; and a motion generated by reading a signal from the photoelectric conversion element.
A partial error correction circuit for correcting an error at the time of detection from the image motion information; and an image for predicting a motion of an image ahead of a current field or a current frame from the image motion information corrected by the decimal error correction circuit. A motion prediction circuit; and a photoelectric conversion element control circuit that controls a signal read address of the photoelectric conversion element based on a prediction result of the image motion prediction circuit. pre-of circuit
From measurement results, the read signals from the photoelectric conversion element
The motion detection error caused by the motion
An image motion compensating device for compensating from a report .