JP2000358221A - Image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image display device that can properly display image data at a variable photographing rate onto an image display means with a prescribed display rate. SOLUTION: The image display device that continuously displays image data photographed by an image pickup device with a variable photographing rate, is provided with an image storage section 1 that stores the image data and information relating to the photographing rate, an image display section 4 that displays an image at a prescribed display rate, a frame rate detection section 2 that detects the photographing rate from the information stored in the image storage section 1 and detects the display rate of the image display section 4, and an interpolation image generating section 3 that generates an interpolation image to interpolate the image read from the image storage section 1 based on the information detected by the frame rate detection section 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device, and more particularly, to an image display device for displaying an image captured by an image capturing device having a variable imaging rate.

[0002]

2. Description of the Related Art There have been proposed various image display apparatuses for displaying an image photographed at a certain imaging rate at a display frame rate different from that at the time of photographing.

As a first prior art of this kind, as disclosed in Japanese Patent Application Laid-Open No. 7-59054, a video displaying an image having a different frame rate on an image input side and a frame rate on an image display side is disclosed. A signal conversion device. The image display device described in this publication synchronizes the image data with the video signal system on the input side when writing image data to the built-in memory, while using the video signal system on the display side when reading image data. This is to synchronize. At this time, if the number of frames on the input side is insufficient with respect to the frame rate on the display side, the necessary number of frame images are interpolated, and if the number of frames on the input side becomes excessive, By thinning out frame images, input and output of different television systems are made possible.

Next, as a second prior art, Japanese Patent Laid-Open No.
A moving image display apparatus and method for continuously creating an interpolated image corresponding to the motion of a subject as described in Japanese Patent Application Laid-Open No. 97348/97. The moving image display device described in the publication includes an image storage means for storing image data, a buffer means for temporarily storing image data read from the image storage means, and a feature of the subject. The control device includes control data providing means for providing a parameter sequence representing the movement of a point as control data, image generating means for generating an interpolated image according to the control data, and display means for sequentially displaying the images. In this way, by continuously creating an interpolated image corresponding to the motion of the subject based on a small amount of original image data and information of the parameter sequence prepared in advance, a long-time moving image can be obtained from a small amount of basic image data. Images can be created and displayed.

Further, as a third prior art, an interpolated image corresponding to the movement of a subject is created from an intermittently recorded video signal as described in Japanese Patent Application Laid-Open No. Hei 10-233996. There are a video signal reproducing apparatus and a video signal reproducing method for performing interpolation display between original images.
The video signal reproducing apparatus includes a reproducing unit that reproduces a video signal, a vector detecting unit that detects a motion vector of the video signal, a unit that generates an interpolated image, and an output unit that outputs a video. At the time of reproduction, the vector detecting means detects a motion vector of the subject, and the interpolated frame creating means creates an interpolated frame image based on the detected motion vector and two consecutive frame images. Are interpolated between the original images and displayed. Thereby, when reproducing the intermittently recorded video signal, a moving image with less discomfort can be displayed.

[0006]

However, the first and third prior arts can cope with the case where the frame rate of the original image is constant, but the frame rate of the original image is variable. In such a case, even if an attempt is made to display at a constant display rate specific to the display device, an image may be reproduced at a timing different from that at the time of imaging, resulting in an unnatural moving image.

In the second prior art, an interpolated image can be created in consideration of movement only when information on the movement of the subject is known in advance. If there is no information on motion, an interpolated image cannot be created.

The present invention has been made in view of the above circumstances, and provides an image display apparatus capable of appropriately displaying image data having a variable imaging rate on image display means having a predetermined display rate. It is an object.

[0009]

In order to achieve the above object, an image display apparatus according to a first aspect of the present invention converts image data captured by an image capturing apparatus that changes an image capturing rate which is a frame rate at the time of image capturing. An image display device for continuously displaying, comprising: an image storage means for recording the image data and information relating to an imaging rate of the image data; and an image display for displaying an image at a display rate which is a predetermined display frame rate. Means, a frame rate detecting means for detecting an imaging rate from the information recorded in the image storage means and a display rate of the image display means, and the frame rate detecting means based on the information detected by the frame rate detecting means. Interpolated image generating means for generating an interpolated image for performing interpolation on an image read from the image storage means. That.

Further, an image display device according to a second aspect of the present invention comprises:
In the image display device according to the first aspect, the frame rate detecting means performs motion detection of a subject based on image data read from the image storage means to calculate a motion amount, and the motion detecting means And an interpolated image number detecting means for changing the number of interpolated images to be generated in accordance with the amount of motion calculated by (1).

Further, in the image display device according to a third aspect of the present invention, in the image display device according to the first aspect, the frame rate detection means detects an imaging rate from information recorded in the image storage means. It is provided with a rate detecting means and a display rate setting means for externally inputting a display rate of the image display means.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show a first embodiment of the present invention. FIG. 1 is a block diagram showing an outline of a configuration of an image display device. FIG. 2 is a block diagram showing a configuration of a frame rate detection unit. FIG. 3 is a block diagram showing the configuration of the interpolation image generation unit, FIG. 4 is a time chart showing an example of correspondence between the imaging timing and the display timing, and FIG. 5 is a diagram showing the original image and the interpolation image in comparison.

This image display device stores image data of an image (hereinafter, referred to as an original image as necessary) taken by an image pickup device that changes an image pickup rate which is a frame rate at the time of image pickup. Image storage unit 1 as means
Frame rate detection for detecting an imaging rate which is a frame rate at the time of imaging based on data read from the image storage unit 1 and detecting a display rate which is a frame rate at the time of display by an image display unit 4 to be described later. A frame rate detection unit 2 as a means, an interpolation image generation unit 3 as an interpolation image generation means for generating a frame image for interpolation based on the image data output from the image storage unit 1,
An image display unit 4 as image display means for continuously displaying image data output from the interpolation image generation unit 3 at a predetermined display rate.

Next, as shown in FIG. 2, the frame rate detecting section 2 detects the frame rate between the images output from the image storage section 1 and outputs the frame rate. 2a, a display rate detection unit 2c for detecting a display rate based on the output of the image display unit 4, an imaging rate detected by the imaging rate detection unit 2a, and a display rate detected by the display rate detection unit 2c Number of interpolated images to be created based on the number of interpolated images to be created
b.

Further, as shown in FIG. 3, the interpolated image generation unit 3 temporarily stores at least one frame of images sequentially read out from the image storage unit 1 in the same time series as when the image was captured. A memory unit 3a serving as a means, chronologically preceding image data (old image data) output from the memory unit 3a, and chronologically subsequent image data (new image data) output from the image storage unit 1. Data), the number of interpolated images output from the frame rate detection unit 2,
An interpolated image creating unit 3b, which is an interpolated image creating unit that continuously creates an interpolated image by calculating a correlation between original images based on each information of an imaging rate and a display rate and outputs the interpolated image to the image display unit 4. , Is configured.

The memory section 3a reads out old image data while writing new image data inputted from the image storage section 1 and simultaneously reads out the old image data.
The operation of outputting to the device can be repeatedly performed.

Next, the operation of such an image display device will be described.

When an image generation / display command is input to a system controller (not shown), the image storage unit 1 sends continuous original image data to the interpolation image generation unit 3 under the control of the system controller.

In the frame rate detecting section 2,
The frame rate value between images read continuously by the interpolation image generation unit 3 is detected by the imaging rate detection unit 2a, and the display rate detection unit 2c detects the frame rate value on the display side of the image display unit 4 I do. Then, based on these two detected frame rate values, the number-of-interpolated-images calculating section 2b calculates the number of interpolated images to be created. The number of interpolated images obtained in this way and the information on the detected imaging rate and display rate are output to the interpolated image generator 3.

Here, the means for detecting the frame rate value will be described.

First, the following can be considered as means for adding the frame rate value of a captured image to image data.

For example, when the frame rate is changed by changing the frequency of the image pickup clock in the image pickup apparatus, the time required for one clock of the image pickup clock at the time of image pickup is detected in the image pickup apparatus, and the required time is detected. Means is to calculate the frame rate value from the time and write the frame rate value in the vertical blanking period of the image data.

As another means, a frame rate value may be obtained by detecting a time interval of a vertical synchronizing signal between successive images in the image pickup apparatus, and may be similarly written in a vertical blanking period of image data.

Using such means, the frame rate value information recorded in the image data is detected by the image-capturing rate detecting section 2a when the image is read out by the image display device.

Alternatively, there is provided a means for writing a frame rate value at the time of image capturing in an empty area of a tag included in each image data in the image capturing apparatus and detecting the frame rate value recorded on the tag in the image display apparatus. It goes without saying that the same effect as described above can be obtained even when used.

Next, the frame rate value on the display side is obtained by converting the video synchronization signal generated in the image display section 4 into the display rate detection section 2.
What is necessary is just to detect by c.

The interpolated image generator 3 writes new image data sequentially read out from the image storage unit 1 in the same time series as the time of imaging into the memory unit 3a, and at the same time repeatedly reads out old image data. Output to the interpolated image creation unit 3b. The interpolation image creation unit 3b stores the new image data input from the image storage unit 1 and the memory unit 3a
The new image data and the old image data are correlated based on the old image data input from the CPU and the information of the number of the interpolated images, the imaging rate, and the display rate input from the frame rate detection unit 2. The number of interpolated images is continuously created. Interpolated image data of a number corresponding to the display-side frame rate created in this way is output to the image display unit 4.

The image display unit 4 continuously displays the image data sent from the interpolation image generation unit 3 at a frame rate specific to the image display unit 4, for example, at a frame rate of 60 frames / second. .

The above is an example of the operation flow of the image display device from the reading of the image data to the display of the interpolated image.

Before an image generation / display command is input,
The original image is read from the image storage unit 1 in advance to detect the imaging rate and the display rate, and the number of interpolated images is determined. As soon as an image generation / display command is input, the detected imaging rate, display rate, and number of interpolated images are calculated. Information and the original image data may be given to the interpolation image generation unit 3 to generate and display an interpolation image. At this time, it is possible to start displaying the image in a shorter time.

Next, an example of means for creating an interpolation image will be described. In this example, a frame correlation value between original images is calculated from two original images existing before and after an interpolation image to be created, and an interpolation image is created using the frame correlation values.

Referring to FIG. 4, an example of the correspondence between the imaging timing and the display timing will be described.

The upper part of FIG. 4 shows the timing on the image pickup side, and each of the symbols F1, F2,.
n indicates one frame period (second). In the illustrated example, each period is different.

On the other hand, the lower part of FIG. 4 shows the timing on the display side, and the symbol f indicates the display time interval (second) of the interpolated image, which is always constant.

Each of the original images has codes I1, I2, I3,
.. In, the arbitrary pixel signal levels spatially located at the same position in the original image are represented by (I1), (I2),
(I3),..., (In).

Similarly, each interpolated image is represented by codes O1,1 and O1,2.
, O1,3,..., On, m, the arbitrary pixel signal levels spatially present at the same position in the interpolated image are represented by (O1,1), (O1,2), (O1,3),. , (On, m)
Shall be expressed as In this case, m indicates the order of the interpolated images existing within the frame period Fn, that is, the m-th image in the time series.

First, as described above, the imaging rate value is calculated by the imaging rate detection section 2a in the frame rate detection section 2.
The display rate value is detected by the display rate detector 2c. These two pieces of information are output to the number-of-interpolated-images calculating section 2b, and the given frame rate values are treated as image time intervals.

The one frame period Fn (second) of the original image In is given from the imaging rate value, and the display time interval f (second) is given from the display rate value. Using these, the number of interpolated images Xn (seconds) in the frame period Fn is obtained by the following equation (1).

[0039]

(Equation 1) Here, [] is a Gaussian symbol and represents the largest integer among integers not exceeding the numerical value in parentheses.

Next, the image-capturing rate value and the display rate value detected by the frame rate detecting section 2 and the number of interpolations Xn (pictures) obtained from the equation (1) are calculated.
To the interpolated image creating unit 3b.

Thus, the interpolation image generating unit 3b also determines one frame period Fn of the original image In based on the imaging rate value.
(Second) is the display time interval f (second) from the display rate value.
Will be given respectively.

Thus, for example, the original image I2 is used as it is for the first display frame O2,1 in the frame period F2, but the correlation calculation between the original image I2 and the original image I3 is performed for the subsequent display frames O2,2 to O2,6. Will be used.

The state of the interpolated image created by such an arithmetic means will be described with reference to FIG.

In FIG. 5, each created interpolated image has two objects that originally exist only on the image, and these two objects are, for example, in accordance with their correlation. Brightness (or density). Such an image is different from the actual image when viewed as a single still image, but by displaying each interpolated image continuously, it is possible to realize a smooth movement in appearance. Things. As described below, such superposition processing has the advantage that the calculation is easy and the load on the image processing circuit and the like is relatively small.

That is, based on the frame period Fn and the display time interval f, and two continuous original images,
In order to obtain an interpolated image existing in the frame period Fn in FIG. 4, an operation as shown in the following Expression 2 is performed between all the pixels of the continuous original image.

[0046]

(Equation 2) Here, m = 0, 1, 2,..., Xn (m: integer), and Fn and f are Fn: one frame period (second) of the original image, and f: display time interval (second), as described above. ).

By performing the operation shown in Expression 2 on all the pixels of the m-th interpolated image to be processed, and further on the 0-th to Xn-th interpolated images, a series of operations within the frame period Fn is performed. Can be obtained. Here, the original image In is used for displaying the first image in the frame period Fn.

The above is an example of the calculation means for creating an interpolation image.

Means for creating an interpolated image is described in, for example, Japanese Patent Laid-Open No.
A known technique as described in Japanese Patent Application Laid-Open No. 0-233996 may be used.

According to the first embodiment, the imaging rate and the display rate are detected, and when there is a difference between them, the number is detected and the number of interpolated images corresponding to the ratio is generated. With this configuration, an image captured at a variable frame rate can be appropriately displayed on an image display unit having a predetermined display rate.

FIG. 6 shows a second embodiment of the present invention, and is a time chart showing an example of the correspondence between the image pickup timing and the display timing.

In the second embodiment, the first
The description of the same parts as those of the embodiment is omitted,
Only the differences will be mainly described.

In the example shown in FIG. 4, the display rate is faster than the imaging rate. On the other hand, the second embodiment is an embodiment in which the imaging rate is faster than the display rate.

The interpolated image generator 3 of this embodiment has a function of changing the correlation and the number of interpolated images to be created according to the relationship between the frame rates on the image capturing side and the display side. And a function for calculating the amount of deviation between the timings on the imaging side and the display side from the values and the display rate value. The rest of the configuration is substantially the same as that shown in FIG. 1 of the first embodiment.

The outline of the operation of the image display device of the second embodiment is almost the same as that of the first embodiment.

Next, a means for generating an interpolated image by using a frame correlation value between original images calculated from a temporal relationship between an interpolated image to be generated and two original images existing before and after the interpolated image is described. An example will be described.

The correspondence between the imaging timing and the display timing is, for example, as shown in FIG. 6, and the frame period f on the display side which is always constant is more than the frame period Fn on the imaging side which is variable. It is slightly longer.

The reference numerals and the like shown in FIG. 6 are almost the same as those shown in FIG. 4, but the images created by interpolation are shown as O1, O2, O3,... The amount of the timing shift on the display side is B1, B2,
..., Bn, etc. The same applies to the case where each pixel signal level is expressed using parentheses ().

The operation at this time is as follows. First,
The imaging rate value and the display rate value detected by the frame rate detection unit 2 are sent to the interpolation image creation unit 3b in the interpolation image generation unit 3.

The interpolated image creating section 3b calculates the shift amount Bn of the timing between the imaging side and the display side from the frame period Fn and the display time interval f given by each received rate, as shown in the following Expression 3. Calculate.

[0061]

(Equation 3)

Here, as shown in FIG. 6, it is assumed that the first image I1 on the imaging side and the first image O1 on the interpolation side are displayed at the same timing.

Next, an interpolation image is obtained from the frame period Fn, the display time interval f, the shift amount Bn, and two continuous original images. In order to obtain the n-th interpolated image, the following equation (4) is used between all the pixels of the continuous original image.
An operation as shown in is performed.

[0064]

(Equation 4)

By performing such calculations, an interpolated image can be created even when the frame rate on the display side is slower.

According to the second embodiment, substantially the same effects as those of the first embodiment can be obtained, and appropriate display can be performed even when the imaging rate is faster than the display rate. Becomes

FIGS. 7 and 8 show a third embodiment of the present invention. FIG. 7 is a block diagram showing a configuration of a frame rate detecting section of an image display device, and FIG. FIG. 6 is a diagram showing an example of the relationship between the number of interpolated images created in FIG.

In the third embodiment, a description of the same parts as those in the first and second embodiments will be omitted, and only different points will be mainly described.

In the third embodiment, the number of interpolated images and the manner of obtaining a correlation for generating an interpolated image are changed in accordance with the movement of the subject.

The image display device of this embodiment is configured as shown in FIG. 7, and the configurations of the image storage unit 1, the interpolated image generation unit 3, and the image display unit 4 are the same as those of the first and second embodiments. This is the same as the embodiment.

The frame rate detecting section 2A, which is a frame rate detecting means in the present embodiment, includes an imaging rate detecting section 2a, an interpolated image number calculating section 2b, a display rate detecting section, in substantially the same manner as shown in FIG. 2c, but further detects the movement of the subject based on the original image output from the image storage unit 1, as shown in FIG.
A motion detecting section 2d is provided as a motion detecting means for outputting the result to the interpolation image number calculating section 2b.

That is, the motion detecting section 2d detects and quantifies the amount of motion of the subject between a plurality of continuous frames from the original image data read from the image storage section 1, and quantifies the quantitative value. This is sent to the interpolation number calculation section 2b as the interpolation image number detection means in the detection section 2.

The motion detector 2d detects the amount of motion of the subject between successive original images by, for example, the following means.

That is, in each original image, the total luminance value of one sheet of original image data is integrated and obtained, and a difference value of the integrated total luminance value between successive image data is obtained. Since this difference value can be regarded as corresponding to the motion amount, the motion amount can be detected from the difference value.

The motion amount of the subject between the continuous original images is detected in this way, and the number of interpolation images to be newly created is determined according to the motion amount.

Incidentally, similarly to the above-described first embodiment,
Before an image generation / display command is input, an original image is read from the image storage unit 1 in advance to detect the amount of motion of the subject, the imaging rate, and the display rate, and to obtain the number of interpolated images. As soon as is entered, information on the detected imaging rate, display rate, number of interpolated images and the original image data are given to the interpolated image generating unit 3 to generate and display the interpolated image. I do not care.

Next, an example of the relationship between the amount of motion and the number of newly created interpolated images will be described with reference to FIG.

In the example shown in FIG. 8, the number of images to be created is determined in multiple stages according to the amount of movement of the subject.
When the number of images to be displayed is insufficient, the same image is displayed a plurality of times to give a necessary number to the display rate.

Specifically, for example, even if 16 interpolated images are required, if it is determined that the movement of the subject is small, for example, only four interpolated images are created according to the amount of movement. , By displaying each interpolation image four times,
There will be a total of 16 interpolated images. When the movement of the subject is small, the same image may be displayed a plurality of times as described above, since an unnatural display does not occur.

Instead of performing fine multi-stage classification as shown in FIG. 8, the amount of movement of the subject is determined only in two stages, for example, still and moving, and the same image is obtained until the next original image. Interpolation may be performed using an image.

According to the third embodiment, substantially the same effects as those of the first and second embodiments can be obtained, and when the movement of the subject is small, the interpolation is performed by the interpolation image generation unit. Since the number of successive interpolation calculations is reduced or unnecessary, the calculation time can be reduced accordingly. Thereby, for example, when the calculation for generating the interpolation image is performed by software processing,
Since the time occupied by the system controller for performing the processing is reduced, the processing time can be allocated to the execution of other processing, and higher-speed and more efficient processing can be performed. Further, it is possible to suppress the power consumed in the interpolation image generating unit, and it is possible to reduce the power consumption of the entire system.

FIG. 9 shows a fourth embodiment of the present invention, and is a block diagram showing a configuration of a frame rate detecting section of an image display device.

In the fourth embodiment, the first
Therefore, description of the same parts as those of the third embodiment will be omitted, and only different points will be mainly described.

Since the display rate of the image display unit 4 is often constant, it is possible to provide the information from outside instead of performing the sequential detection. Therefore, in the fourth embodiment, a display rate specific to the image display unit 4 is set as follows.
This is to input from outside.

As shown in FIG. 9, the image display device of this embodiment has substantially the same configuration as the image display device of the above-described first embodiment, but has a frame rate detector 2B as a frame rate detector. In this embodiment, a display rate setting section 2e as a display rate setting means is provided in place of the display rate detecting section 2c.

The display rate setting section 2e is for inputting the display rate value used in the image display section 4 from outside the image display device. The input display rate value is calculated by the interpolation image number calculation. The data is output to the section 2b and the interpolation image generating section 3.

More specifically, the display rate setting section 2e has a memory function of storing a plurality of one frame periods of the image display section 4 in advance, and selecting a desired one from the plurality of display rate values. And a selector function that can perform

In the display rate setting section 2e, when a desired frame rate value is selected using the selector function, one frame period on the display side corresponding to the selected frame rate value is read out from the memory function. Are output to the interpolation image number calculation section 2b and the interpolation image generation section 3.

It should be noted that substantially the same effect can be obtained even if the display rate is not selected from a plurality of set values but one frame period on the display side can be determined from continuous values. It goes without saying that it is possible.

According to the fourth embodiment, substantially the same effects as those of the above-described first to third embodiments can be obtained, and the display rate detection unit is omitted, and a simpler configuration is used instead. Because the display rate setting section was adopted,
Further, the configuration of the frame rate detection unit can be simplified, and the cost can be reduced.

The present invention is not limited to the above-described embodiment, and it is needless to say that various modifications and applications can be made without departing from the gist of the invention.

[Appendix] According to the above-described embodiment of the present invention as described in detail above, the following configuration can be obtained.

(1) An image display device for continuously displaying image data captured by an image capturing device that changes an image capturing rate, which is a frame rate at the time of image capturing, wherein the image data and the image capturing rate of the image data are displayed. Image storage means for recording such information, image display means for displaying an image at a display rate which is a frame rate at the time of predetermined display, and detecting an imaging rate from information recorded in the image storage means. A frame rate detection unit for detecting a display rate of the image display unit, and an interpolation image for performing interpolation on an image read from the image storage unit based on information detected by the frame rate detection unit. An image display device comprising: an interpolated image generating means for generating.

(2) The frame rate detecting means includes:
A motion detecting means for detecting a motion of a subject based on image data read from the image storage means to calculate a motion amount; and a number of interpolated images to be generated according to the motion amount calculated by the motion detecting means. And an interpolated image number detecting means for changing the number of images.

(3) The frame rate detecting means includes:
Imaging rate detection means for detecting an imaging rate from information recorded in the image storage means, display rate setting means for externally inputting a display rate of the image display means,
The image display device according to supplementary note (1), comprising:

(4) The interpolation image generation means stores at least one image data read from the image storage means.
An interpolated image is created based on the memory means for storing frames, the image data output in time series from the memory means, and the image data read in time series from the image storage means. An image display device according to (1), further comprising: an interpolation image creation unit.

(5) The interpolated image generating means determines whether the detection result by the frame rate detecting means is higher when the display rate is higher than the imaging rate or when the display rate is lower than the imaging rate. 2. The image display device according to claim 1, wherein the image display device can cope with the following case.

Therefore, according to the invention described in the appendix (1), since the interpolated image is generated by detecting the imaging rate and the display rate, the image data of the variable imaging rate is converted to the image data of the predetermined display rate. It is possible to appropriately display the image on the image display means.

According to the invention described in Appendix (2),
Since the same effects as those of the invention described in Appendix (1) can be obtained, and the number of interpolation images is changed according to the movement of the subject, more efficient generation of interpolation images can be performed.

Further, according to the invention described in the supplementary note (3), the same effect as that of the invention described in the supplementary note (1) can be obtained, and the display rate can be set by inputting from outside.

According to the invention described in the supplementary note (4), the same effect as the invention described in the supplementary note (1) can be obtained, and an interpolated image is created based on image data at different points in time while considering the correlation. It is possible to do.

According to the invention described in the supplementary note (5), the same effects as those of the invention described in the supplementary note (1) can be obtained, and not only when the display rate is higher than the imaging rate,
It is possible to cope with a case where the display rate is lower than the imaging rate.

[0103]

As described above, according to the image display apparatus of the first aspect of the present invention, the interpolation rate is generated by detecting the imaging rate and the display rate.
It is possible to appropriately display image data having a variable imaging rate on image display means having a predetermined display rate.

Further, according to the image display apparatus of the present invention, the same effect as that of the first aspect is obtained, and the number of interpolated images is changed according to the movement of the subject. In addition, it is possible to more efficiently generate an interpolated image.

Further, according to the image display apparatus of the present invention, the same effects as those of the first aspect can be obtained, and the display rate can be set by inputting from the outside.

[Brief description of the drawings]

FIG. 1 is a block diagram schematically showing the configuration of an image display device according to a first embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of a frame rate detection unit according to the first embodiment.

FIG. 3 is a block diagram illustrating a configuration of an interpolation image generation unit according to the first embodiment.

FIG. 4 is a time chart showing an example of correspondence between imaging timing and display timing in the first embodiment.

FIG. 5 is a diagram showing an original image and an interpolated image in comparison with the first embodiment.

FIG. 6 is a time chart showing an example of correspondence between imaging timing and display timing in the second embodiment of the present invention.

FIG. 7 is a block diagram showing a configuration of a frame rate detection unit of an image display device according to a third embodiment of the present invention.

FIG. 8 is a diagram showing an example of a relationship between a motion amount and the number of interpolation images to be newly created in the third embodiment.

FIG. 9 is a block diagram illustrating a configuration of a frame rate detection unit of an image display device according to a fourth embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Image storage part (image storage means) 2, 2A, 2B ... Frame rate detection part (frame rate detection means) 2a ... Imaging rate detection part (imaging rate detection means) 2b ... Interpolation image number calculation part (interpolation image number detection Means) 2c: display rate detection unit 2d: motion detection unit (motion detection unit) 2e: display rate setting unit (display rate setting unit) 3: interpolation image generation unit (interpolation image generation unit) 3a: memory unit (memory unit) 3b: Interpolated image creating section (interpolated image creating means) 4 ... Image display section (image displaying means)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akihiro Kubota 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Industrial Co., Ltd. (72) Inventor Yukihiro Sugimoto 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Hiroshi Ito 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Toru Hidaka 2-43-2, Hatagaya, Shibuya-ku, Tokyo No. Olympus Optical Co., Ltd. F-term (reference) 5C063 AC01 BA08 BA12 CA07 CA14 CA40 DA20 DB02

Claims (3)

[Claims] 1. An image display device for continuously displaying image data captured by an image capturing device having a variable image capturing rate, which is a frame rate at the time of image capturing, wherein the image data and the image capturing rate of the image data are related. Information, an image storage means for recording information, an image display means for displaying an image at a display rate which is a predetermined display frame rate, and an imaging rate detected from the information recorded in the image storage means, A frame rate detection means for detecting a display rate of the image display means; and an interpolated image for performing interpolation on an image read from the image storage means based on information detected by the frame rate detection means. An image display device, comprising: 2. The motion detection device according to claim 1, wherein the frame rate detection means detects a motion of the subject based on the image data read from the image storage means and calculates a motion amount, and the motion calculated by the motion detection means. 2. The image display apparatus according to claim 1, further comprising: an interpolated image number detecting unit that changes the number of interpolated images to be generated according to the amount. 3. An imaging rate detecting means for detecting an imaging rate from information recorded in the image storage means, and a display rate setting means for externally inputting a display rate of the image display means. The image display device according to claim 1, further comprising: