JP2008139828A - Image processing apparatus, image processing method, electro-optical device and electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress motion picture blurring without a decrease in brightness of the entire image or without the necessity of complex image processing. <P>SOLUTION: An image processing apparatus includes a first frame image acquisition unit that acquires first frame images composing a moving image, a second frame image insertion section that generates a second frame image including a white image and inserts the second frame between successive ones of the first frame images, and a frame image output unit that outputs the frame images. The second frame image insertion section includes a double-speed frame image generator that generates a double-speed frame image consecutively time-sequentially to each of the first frame images, a white image pattern generator that generates a white image pattern including the white image, and a second frame image transformer that transforms the double-speed frame image into the second frame image based on the white image pattern. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an image processing device, an image processing method, an electro-optical device, and an electronic apparatus.

In electro-optical devices such as liquid crystal devices that display in the hold mode, compared to display devices that display in the impulse mode, such as CRT (Cathode Ray Tube), afterimages of human vision are noticeable when displaying moving images. In some cases, moving image blur may occur in which the edge of the moving object image is blurred in the display image. For example, the following Patent Documents 1 and 2 and Non-Patent Document 1 disclose an example of a technique for suppressing such moving image blur.
In Patent Document 1, moving image blur is suppressed by limiting the light emission time between frames by controlling the light emission luminance. Further, in Non-Patent Document 1, an impulse mode is realized in a pseudo manner without reducing brightness by displaying an original image for one screen as two images, a brighter image and a darker image than the original image. is doing. In Patent Document 2, a part of an image is covered with a black belt, and the position of the belt is moved from top to bottom. At this time, it is a part of the image that is covered by the belt, but if one frame is integrated, a period in which no video appears in one frame is created, and a black image is inserted into the entire image (hereinafter, The effect similar to that obtained when the black insertion is abbreviated) is obtained.

JP-A-4-302289 JP 2005-10579 A Hitachi Display Co., Ltd. News Release April 10, 2006 "Development of New Flexible Video" Technology for IPS LCD Panels for Digital TV (http://www.hitachi.co.jp/New/cnews/month /2006/04/0410a.html)

However, with the technique described in Patent Document 1 described above, the entire image becomes dark by limiting the light emission time between frames. In addition, the technique described in Non-Patent Document 1 described above can reduce the darkness of the entire image, but the image processing becomes complicated, such as generating an image in which the highlight portion is inverted in real time. End up. Further, the technique described in Patent Document 2 described above can reduce the darkness of the entire image as in the technique described in Non-Patent Document 1, but the same brightness as when black is not inserted. Can not be.
FIG. 9 is a diagram showing a conventional example in which black is inserted between frame images constituting a moving image. In the same figure, an image f1 and an image f3 indicate a frame image f1 and a frame image f3 constituting a moving image, and an image f2 and an image f4 indicate a frame image f2 and a frame image f4 inserted with black. As shown in the figure, the motion blur of the frame image f1 and the frame image f3 can be suppressed by inserting the frame image f2 after the frame image f1 and the frame image f4 after the frame image f3. However, since the frame image f2 and the frame image f4 are black images, when the frame images f1 to f4 are displayed as videos, the entire image becomes darker than the original image.

  According to one of the effects exhibited by the present invention, it is possible to suppress moving image blur without reducing the brightness of the entire image. Also, it is possible to suppress moving image blur without requiring complicated image processing.

As described above, in the image processing method by inserting black between the frame images constituting the moving image as shown in FIG. 9, it is inevitable that the image becomes darker than the original image. The inventor of the present invention conducted an experiment to improve this point, and obtained the following knowledge.
That is, it has been confirmed by experiment that the effect of conventional black insertion = “suppressing moving image blur by erasing visual memory by providing a period not emitting light” can also be obtained by providing a period in which the screen is entirely white. did.
An image processing apparatus according to the present invention generates a first frame image acquisition unit that acquires a plurality of first frame images constituting a moving image, a second frame image including a white image representing a white image, and A second frame image insertion unit that inserts the second frame image between each of the plurality of acquired first frame images; and a frame image output that outputs the plurality of first frame images into which the second frame image has been inserted. And a section.

  According to the image processing device of the present invention, the first frame image acquisition unit acquires a plurality of first frame images constituting a moving image, and the second frame image insertion unit acquires a second frame including a white image. An image is generated, and a second frame image including the white image is inserted between each of the first frame images. Then, the frame image output unit outputs the first frame image in which the second frame image is inserted. As a result, when the frame image output from the frame image output unit is displayed as a video, there is a second frame image including a white image between each of the first frame images. A period in which no video appears is provided in the displayed period, and moving image blur can be suppressed. Since the inserted second frame image is a white image, it is possible to suppress moving image blur without reducing the brightness of the entire image. Furthermore, this image processing can be easily realized without requiring complicated image processing.

  In the above-described image processing device according to the present invention, the second frame image insertion unit generates a double-speed frame image generation unit that generates a double-speed frame image that continues in chronological order from each of the acquired plurality of first frame images. A white image pattern generation unit that generates a white image pattern including the white image for converting the double-speed frame image into the second frame image, and based on the white image pattern, the double-speed frame image is And a second frame image conversion unit for converting into a second frame image.

  In the above-described image processing apparatus according to the present invention, the second frame image conversion unit sets the white image to the entire image of the double-speed frame image based on the white image pattern, thereby converting the double-speed frame image. The image is converted into the second frame image.

  In the above-described image processing apparatus according to the present invention, the double-speed frame image generation unit includes n frames (n that have the same image as the first frame image continuously in time series from the first frame image. Is an integer greater than or equal to 2), and the second frame image converting unit divides each of the n frames of double-speed frame images into n partial images. For each of the n partial images, by setting the white image to one partial image at a different division position among the double-speed frame images, each of the double-speed frame images is changed to the second frame. It is characterized by being converted to an image.

  In the above-described image processing apparatus according to the present invention, the second frame image insertion unit further includes a brightness detection unit that detects a brightness level of the acquired first frame image, and the white image pattern generation unit includes: The brightness value of the white image included in the white image pattern is increased when the detected brightness level is high, and the brightness value of the white image is decreased when the detected brightness level is low. As described above, the brightness value of the white image is set according to the detected brightness level.

  In the above-described image processing apparatus according to the present invention, the white image pattern generation unit increases the luminance value of the white image when the detected brightness level exceeds a predetermined threshold, and the detected brightness. Setting the brightness value of the white image by comparing the detected brightness level with the threshold value so that the brightness value of the white image is lowered when the brightness level does not exceed the threshold value. It is characterized by.

  The image processing method according to the present invention generates a second frame image including a first frame image acquisition step of acquiring a plurality of first frame images constituting a moving image, and a white image representing a white image, A second frame image inserting step of inserting the second frame image between each of the plurality of acquired first frame images; and a frame image output of outputting the plurality of first frame images into which the second frame image has been inserted. And a process.

  An electro-optical device according to the present invention is an electro-optical device including any one of the above-described image processing devices.

  An electronic apparatus according to the present invention is an electronic apparatus including any of the image processing apparatuses described above.

(First embodiment)
Hereinafter, an image processing apparatus according to a first embodiment of the present invention will be described with reference to the drawings.

<Schematic configuration of image processing apparatus>
First, a schematic configuration of the image processing apparatus according to the first embodiment of the present invention will be described.
FIG. 1 is a block diagram showing an example of a schematic configuration of an image processing apparatus according to the first embodiment of the present invention. As illustrated in FIG. 1, the image processing apparatus 1 includes a first frame image acquisition unit 11, a second frame image insertion unit 21, and a frame image output unit 31. The second frame image insertion unit 21 includes a double speed frame image generation unit 22, a brightness detection unit 23, a white image pattern generation unit 24, and a second frame image conversion unit 25.

The first frame image acquisition unit 11 receives a moving image composed of a predetermined number of pixels and a predetermined pixel value such as an RGB format as a digital video signal from an external device such as a DVD player, a video deck, and a personal computer. A plurality of first frame images constituting the moving image are acquired. Here, one first frame image represents a still image corresponding to one frame of a moving image.
The second frame image insertion unit 21 generates a second frame image in which the entire image is a white image (hereinafter, the white image is abbreviated as a white image) or a part of the image is a white image, and the acquired plurality of images The generated second frame image is inserted between each of the first frame images.
The frame image output unit 31 outputs a frame image in which the second frame image is inserted between each of the acquired first frame images to a display device or the like as a digital video signal.

Next, the double-speed frame image generation unit 22 included in the second frame image insertion unit 21 performs time series in succession with respect to each of the acquired plurality of first frame images (n is an integer equal to or greater than 1). ) Is generated. As a result, one first frame image becomes (n + 1) times as many frame images, and (n + 1) times faster. For example, following the first frame image, one double-speed frame image is generated to make a total of two (double-speed) frame images, or two double-speed frame images are generated for a total of three (3 times speed) frame image.
The brightness detection unit 23 detects each brightness level of the plurality of acquired first frame images. Here, the brightness level is detected by first calculating the following equation for all the pixels included in one first frame image, and calculating a brightness signal from each pixel. Then, the calculated average value of the brightness signals is set as the brightness level of the first frame image.
Lightness signal = 0.3 x R + 0.6 x G + 0.1 x B
The method for detecting the brightness level is not limited to the method described above, and the brightness level may be detected using another method.

The white image pattern generation unit 24 generates a white image pattern used when converting the double-speed frame image generated by the double-speed frame image generation unit 22 into a second frame image. In this white image pattern, a white image that overwrites the double-speed frame image is set. Further, the brightness value of the white image is set according to the brightness level of the first frame image detected by the brightness detection unit 23.
The second frame image conversion unit 25 converts the double-speed frame image into a second frame image based on the white image pattern generated by the white image pattern generation unit 24. Specifically, the double-speed frame image is converted into the second frame image by overwriting the white image set in the white image pattern on the double-speed frame image.

  Here, although not shown, the image processing apparatus 1 stores a storage medium in which a program for controlling each unit described above is stored, a CPU for executing these programs, and data necessary for executing the programs. RAM. The processing of each unit described above is realized by executing the program by the CPU. The storage medium is a semiconductor storage medium such as RAM or ROM, a magnetic storage type storage medium such as FD or HD, an optical reading type storage medium such as CD, CDV, LD, or DVD, or a magnetic storage type such as MO. The optical reading type storage medium includes any storage medium as long as it is a computer-readable storage medium regardless of electronic, magnetic, optical, or other reading methods. In addition, each of the above-described units includes a unit that performs its function only with a dedicated program, a unit that controls the hardware with a dedicated program, and performs the function. Note that the functions of the above-described units may be configured only by dedicated hardware.

<Operation of Image Processing Device>
Next, the operation of the image processing apparatus according to the first embodiment of the present invention will be described.
FIG. 2 is a flowchart showing the operation of the image processing apparatus according to the first embodiment of the present invention.

  First, in step S110, the first frame image acquisition unit 11 receives a moving image input as a digital video signal from an external device, and a plurality of first frame images constituting the moving image are time-sequentially frame by frame. Obtain sequentially. In subsequent steps S120 to S160, the acquired first frame image is processed one by one.

  In step S120, the double-speed frame image generation unit 22 generates n double-speed frame images following the first frame image for the first frame image acquired in step S110.

  In step S130, the white image pattern generation unit 24 generates a white image pattern used when converting each of the n double-speed frame images generated in step S120 into a second frame image. Here, a white image pattern that overwrites the entire double-speed frame image is generated. Details of the operation for generating the white image pattern will be described later.

  In step S140, the second frame image conversion unit 25 converts n double-speed frame images into n second frame images based on the white image pattern generated in step S130. Here, each of the double-speed frame images is converted into a second frame image by overwriting the entire white-speed frame image with the white image set in the white image pattern.

  In step S150, the acquired first frame image and the n second frame images converted in step S140 following the time series are output to a display device or the like as digital video signals. The frame image output in this way constitutes a frame image in which a white image is inserted between each of the acquired plurality of first frame images.

  In step S160, it is determined whether or not the acquired first frame image is the last frame. In the case of the last frame, the operation of the image processing apparatus 1 is terminated. On the other hand, if it is not the last frame, the process returns to step S110 to obtain a first frame image corresponding to the next frame of the moving image.

<Operation for generating white image pattern>
Next, details of the operation for generating the white image pattern will be described.
FIG. 3 is a flowchart showing an operation for generating a white image pattern.

  First, in step S210, the brightness detection unit 23 detects a brightness level by calculating a brightness signal from all the pixels included in the acquired first frame image and calculating an average value thereof.

In step S220, the brightness level detected in step S210 is compared with a predetermined threshold value to determine whether the first frame image is bright or dark. When the brightness level exceeds a predetermined threshold, that is, when it is determined that the first frame image is bright, the process proceeds to step S230, and the brightness value of the white image set in the white image pattern is increased. As a result, the white image is set to normal white (white with an increased luminance value).
On the other hand, when the brightness level does not exceed the predetermined threshold value, that is, when it is determined that the first frame image is dark, the process proceeds to step S240, and the brightness value of the white image set in the white image pattern is slightly lowered. As a result, the white image is set to gray (white with a slightly lower luminance value).
The operation for generating the white image pattern is thus completed, and the process returns to the process of the flowchart shown in FIG.

  In addition, the 1st frame image acquisition process of this invention is corresponded to said step S110. The second frame image insertion step of the present invention corresponds to the above steps S120 to S140. The frame image output process of the present invention corresponds to step S150.

<Example of frame image after conversion>
Next, an example of a frame image converted based on the white image pattern will be described.
FIG. 4 is a diagram showing an example of a frame image converted based on a white image pattern, (a) is a diagram showing a white image pattern, and (b) is inserted between the first frame images. It is a figure which shows a 2nd frame image. The white image pattern p1 shown in (a) is generated in step S130 shown in FIG. 2, and normal white is set for the entire image.
Also, the image f1 shown in FIG. 4B is the i-th first frame image f1 acquired in step S110, and the image f3 is the (i + 1) -th acquired first frame image f3. The image f2 shown in FIG. 4B is converted by overwriting the entire white image pattern p1 shown in FIG. 4A on the single double-speed frame image generated in step S120 in step S140. The second frame image f2 is the second frame image f4 converted in the same manner. The horizontal axis t in FIG. 4B and the subsequent figures indicates the passage of time from left to right in the figure, and indicates that each frame image is continuous in time series.
As shown in FIG. 4B, the moving image received from the external device is converted into a frame image group in which a white image is inserted between the first frame images constituting the moving image.

FIG. 5 is a diagram illustrating an example of a frame image converted based on white image patterns having different luminance values. FIG. 5A illustrates two types of white image patterns having different luminance values, and FIG. FIG. 4 is a diagram illustrating a second frame image inserted between first frame images. The two types of white image patterns shown in FIG. 5A include a white image pattern p1 in which normal white (white with an increased luminance value) is set for the entire image, and gray (white with a slightly lower luminance value). And a white image pattern p2 in which is set.
Also, the images f1, f3, and f5 shown in FIG. 5B are the first frame images f1, f3, and f5 acquired at the i-th, (i + 1) -th, and (i + 2) -th, respectively. The images f2 and f6 shown in FIG. 5B are second frame images converted by overwriting the entire white image pattern p1 (white) shown in FIG. f2 and f6. On the other hand, the image f4 shown in FIG. 5B is a second frame image f4 converted by overwriting the entire white image pattern p2 (gray).

In the example shown in FIG. 5, the brightness levels of the first frame images f1, f3, and f5 shown in FIG. 5B are detected in step S210 shown in FIG. 3, and whether each image is bright or dark in step S220. Determine. As a result, since the first frame images f1 and f5 shown in FIG. 5B are determined to be bright, normal white is set for the second frame images f2 and f6. On the other hand, since the first frame image f3 shown in FIG. 5B is determined to be dark, gray is set to the second frame image f4.
As a result, as shown in FIG. 5B, a moving image received from an external device is usually displayed between the first frame images constituting the moving image according to the brightness of each first frame image. Are converted into a group of frame images into which white or gray images are inserted.

  In the example of FIG. 4B and FIG. 5B described above, one double-speed frame image is generated from one first frame image in step S120. However, the number of double-speed frame images generated from one first frame image is not limited to one. For example, two or three double-speed frame images may be generated from one first frame image, and each double-speed frame image may be overwritten with a white image pattern and converted to a second frame image. .

<Effect>
As described above, in the image processing apparatus 1 of the present embodiment, as illustrated in the example of FIG. 4B, the moving image received from the external device is between the first frame images constituting the moving image. The frame image group into which the white image is inserted is converted.
In the conventional example shown in FIG. 9, the motion blur of the frame images f1 and f3 can be suppressed by inserting the frame image f2 after the frame image f1 and the frame image f4 after the frame image f3. However, since the frame images f2 and f4 are black images, when the frame images f1 to f4 are displayed as images, the entire image becomes darker than the original image.
On the other hand, in the example shown in FIG. 4B in the present embodiment, by inserting a frame image f2 that becomes a white image following the frame image f1, and a frame image f4 that becomes a white image following the frame image f3, Motion blur of the frame images f1 and f3 can be suppressed. Further, since the frame images f2 and f4 are white images, when the frame images f1 to f4 are displayed as videos, the entire image is not darkened compared to the original image. That is, it is possible to suppress moving image blur without reducing the brightness of the entire image.

Further, in the conventional example shown in FIG. 9, in order to adjust the effect of suppressing the motion blur, the number of frame images inserted black between the frame images constituting the moving image may be increased. In this case, there is a problem that the entire image is further darkened because black images increase when displayed as video.
On the other hand, in the example shown in FIG. 4B in the present embodiment, it is possible to increase the number of frame images to be white images inserted between frame images constituting a moving image. In this case, when displaying as a video, white images increase, so that the entire image does not become dark. That is, it is possible to adjust the effect of suppressing moving image blur without reducing the brightness of the entire image.

Further, in the image processing apparatus 1 according to the present embodiment, as illustrated in the example of FIG. 5B, the moving image received from the external device is displayed between the first frame images constituting the moving image. Depending on the brightness of one frame image, it is converted into a frame image group into which a normal white or gray image is inserted.
When a dark image follows a moving image scene, if a white image with a high luminance value is inserted between the first frame images serving as the image scene, the contrast of the entire image of the image scene may be reduced. . For this reason, in the example shown in FIG. 5B, according to the brightness level of the first frame image, normal white is set for a bright image, and gray is set for a dark image. ing. Since the gray image is inserted if the first frame image is a dark image, moving image blur can be suppressed without reducing the contrast of the image even when a dark image continues in the image scene of the moving image.

(Second Embodiment)
Next, an image processing apparatus according to a second embodiment of the present invention will be described with reference to the drawings.

<Schematic Configuration and Operation of Image Processing Device>
The schematic configuration of the image processing apparatus according to the second embodiment of the present invention is the same as the schematic configuration of the image processing apparatus according to the first embodiment shown in FIG. The operation of the image processing apparatus according to the second embodiment is basically the same as the operation of the image processing apparatus according to the first embodiment shown in FIGS. 2 and 3 described above, but the flowchart of FIG. The part of the processing contents in is different from the first embodiment.
Specifically, in the process of generating a double-speed frame image in step S120 shown in FIG. 2, the process of generating a white image pattern in step S130, and the process of converting the double-speed frame image into a second frame image in step S140. Some of the processing details are different.

  In the case of the second embodiment, in the process of generating the double-speed frame image in step S120, unlike the case of the first embodiment, n sheets (n is an integer of 2 or more) having the same image as the acquired first frame image. The double frame image is generated following the first frame image.

  In the case of the second embodiment, unlike the case of the first embodiment, the process of generating the white image pattern in step S130 is not a white image pattern to be overwritten on each entire double-speed frame image but each double-speed frame. A white image pattern for overwriting a part of the image is generated.

  In the case of the second embodiment, in the process of converting the double-speed frame image to the second frame image in step S140, unlike the case of the first embodiment, the white image is overwritten on the entire double-speed frame image. Instead, the double-speed frame image is converted into the second frame image by overwriting a part of each double-speed frame image.

  In step S140 in the case of the second embodiment described above, a part of the double-speed frame image that overwrites the white image is each double-speed frame when each of the n double-speed frame images is divided into n partial images. One partial image is shown for the image. Further, the one partial image to be overwritten in each double-speed frame image is at a different division position between the double-speed frame images.

FIG. 6 is a diagram illustrating an example of a frame image partially converted based on a white image pattern, (a) is a diagram illustrating a double-speed frame image divided into partial images, and (b) is a white image It is a figure which shows an image pattern, (c) is a figure which shows the double speed frame image by which the white image was overwritten. In the double-speed frame image shown in FIG. 5A, the entire image is divided into four partial images b1 to b4.
Further, in each of the white image patterns p1 to p4 shown in FIG. 5B, for each white image pattern, the divided areas w1 to w4 of the white image pattern corresponding to the partial images b1 to b4 shown in FIG. One white image is set from the upper divided area w1 to the lower divided area w4 one by one.
Further, in the double-speed frame images f1 to f4 shown in FIG. 10C, the divided area w1 in which the white images of the white image patterns p1 to p4 shown in FIG. ~ W4 has been overwritten. In this case, for each of the double-speed frame images f1 to f4, a white image is set from the upper partial image b1 to the lower partial image b4, one for each double-speed frame image. That is, a white image is set for partial images at different division positions among the respective double speed frame images.
The moving image received from the external device is converted into a frame image group in which a double-speed frame image as shown in FIG. 6C is inserted between the first frame images constituting the moving image.

<Effect>
As described above, in the image processing apparatus 1 of the present embodiment, the moving image received from the external device is as shown in the example of FIG. 6C between the first frame images constituting the moving image. It is converted into a frame image group in which a double-speed frame image is inserted.
In the example shown in FIG. 6C, white images are set in partial images at different division positions between the respective double-speed frame images. Therefore, when these double-speed frame images are integrated over a period, a white image is displayed over the entire frame. Can be displayed. As a result, as in the case of the first embodiment described above, the effect of inserting a white image between the first frame images constituting the moving image can be obtained.
Further, the width of the partial image for setting the white image can be increased or decreased by increasing or decreasing the number of double-speed frame images inserted between the first frame images, and by increasing or decreasing the number of divisions of the double-speed frame images accordingly. . As a result, by adjusting the number of double-speed frame images and the width of the partial image, it is possible to finely adjust the effect of suppressing moving image blur and the contrast of the image.

  Further, the image processing in the above-described embodiment can be easily realized without requiring complicated image processing or the like.

(Modification 1)
In the above-described embodiment, in the operation of generating the white image pattern, the brightness level is compared with a predetermined threshold as shown in the flowchart of FIG. (White with a slightly lower luminance value) was set. However, the present invention is not limited to this, and a white image with a variable luminance value may be set according to the brightness level. FIG. 7 is a diagram illustrating changes in brightness of a moving image and a white image. As shown in the figure, the brightness of the white image may be set to be variable according to the brightness of the first frame image constituting the moving image.
As a result, it is possible to set the contrast of the white image inserted between the first frame images constituting the moving image in accordance with the contrast of the image scene of the moving image, so that the contrast suitable for each image scene is maintained. However, moving image blur can be suppressed.

(Modification 2)
In the above-described embodiment, as in the example shown in FIG. 6, the double-speed frame image is divided in the vertical direction in the second embodiment, and the white images are sequentially arranged one by one from the upper partial image b1 to the lower partial image b4. It was set. However, the direction in which the double-speed frame image is divided and the order in which the white images are set for the partial images are not limited to this. For example, a double-speed frame image is divided in the vertical direction and white images are set in order from the lower partial image to the upper partial image, or the double-speed frame image is divided in the horizontal direction, and the left partial image is changed to the right side. A white image may be set in order from the partial image or from the right partial image to the left partial image.
Even with this configuration, as in the case of the first embodiment described above, the effect of inserting a white image between the first frame images constituting the moving image can be obtained. Further, by adjusting the number of double-speed frame images and the width of the partial image, it is possible to finely adjust the effect of suppressing moving image blur and the contrast of the image.

(Modification 3)
In the above-described embodiment, the image processing apparatus that implements the present invention has been described. However, the image processing apparatus may be used instead of the image processing apparatus. FIG. 8 is a block diagram showing an example of a schematic configuration of the image processing circuit according to the embodiment of the present invention. As shown in the figure, the image processing circuit 5 includes a first frame image acquisition circuit 51, a second frame image insertion circuit 61, and a frame image output circuit 71. The second frame image insertion circuit 61 includes a double-speed frame image generation circuit 62, a brightness detection circuit 63, a white image pattern generation circuit 64, and a second frame image conversion circuit 65. The processing of each circuit shown in the figure is the same as the processing of each corresponding part provided in the image processing apparatus 1 shown in FIG. The image processing apparatus and the image processing circuit described above may be provided in an electrical engineering apparatus or an electronic device.

1 is a block diagram showing an example of a schematic configuration of an image processing apparatus according to a first embodiment of the present invention. 3 is a flowchart showing the operation of the image processing apparatus according to the first embodiment of the present invention. The flowchart which shows the operation | movement which produces | generates a white image pattern. It is a figure which shows the example of the frame image converted based on the white image pattern, (a) is a figure which shows a white image pattern, (b) shows the 2nd frame image inserted between the 1st frame images. Figure. It is a figure which shows the example of the frame image converted based on the white image pattern from which a luminance value differs, (a) is two types of white image patterns from which a luminance value differs, (b) is between 1st frame images. The figure which shows the inserted 2nd frame image. It is a diagram showing an example of a frame image partially converted based on a white image pattern, (a) is a diagram showing a double-speed frame image divided into partial images, (b) is a diagram showing a white image pattern, (C) is a figure which shows the double speed frame image by which the white image was overwritten. The figure which shows the change of the brightness of a moving image and a white image. 1 is a block diagram showing an example of a schematic configuration of an image processing circuit according to an embodiment of the present invention. The figure which shows the conventional example which inserted black between the frame images which comprise a moving image.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Image processing apparatus, 5 ... Image processing circuit, 11 ... 1st frame image acquisition part, 21 ... 2nd frame image insertion part, 22 ... Double speed frame image generation part, 23 ... Brightness detection part, 24 ... White image pattern Generation unit, 25 ... second frame image conversion unit, 31 ... frame image output unit, 51 ... first frame image acquisition circuit, 61 ... second frame image insertion circuit, 62 ... double-speed frame image generation circuit, 63 ... brightness detection Reference numeral 64: white image pattern generation circuit; 65: second frame image conversion circuit; 71: frame image output circuit.

Claims (9)

A first frame image acquisition unit that acquires a plurality of first frame images constituting a moving image;
A second frame image insertion unit that generates a second frame image including a white image representing a white image and inserts the second frame image between each of the plurality of acquired first frame images;
An image processing apparatus comprising: a frame image output unit that outputs the plurality of first frame images into which the second frame images are inserted. The second frame image insertion unit is
A double-speed frame image generation unit that generates a double-speed frame image that continues in chronological order from each of the acquired plurality of first frame images;
A white image pattern generation unit that generates a white image pattern including the white image for converting the double-speed frame image into the second frame image;
The image processing apparatus according to claim 1, further comprising: a second frame image conversion unit that converts the double-speed frame image into the second frame image based on the white image pattern.   The second frame image conversion unit converts the double-speed frame image into the second frame image by setting the white image in the entire image of the double-speed frame image based on the white image pattern. The image processing apparatus according to claim 2. The double-speed frame image generation unit includes n frames (n is an integer of 2 or more) of n frames having the same image as the first frame image continuously in time series from the first frame image. Produces
When the second frame image conversion unit divides each of the n-frame double-speed frame images into n partial images, the second-frame image conversion unit performs the double-speed image out of the n partial images for each of the double-speed frame images. 3. The double-speed frame image is converted into the second frame image by setting the white image in one partial image at different division positions between frame images. Image processing device. The second frame image insertion unit further includes a brightness detection unit that detects a brightness level of the acquired first frame image,
The white image pattern generation unit increases a luminance value of a white image included in the white image pattern when the detected brightness level is high, and the white image pattern generation unit when the detected brightness level is low. 5. The image processing according to claim 2, wherein the brightness value of the white image is set according to the detected brightness level so as to reduce the brightness value of the image. 6. apparatus.   The white image pattern generation unit increases the luminance value of the white image when the detected brightness level exceeds a predetermined threshold, and when the detected brightness level does not exceed the threshold 6. The image according to claim 5, wherein the brightness value of the white image is set by comparing the detected brightness level with the threshold so as to lower the brightness value of the white image. Processing equipment. A first frame image acquisition step of acquiring a plurality of first frame images constituting a moving image;
A second frame image insertion step of generating a second frame image including a white image representing a white image and inserting the second frame image between each of the plurality of acquired first frame images;
A frame image output step of outputting the plurality of first frame images into which the second frame images have been inserted.   An electro-optical device comprising the image processing device according to claim 1.   An electronic apparatus comprising the image processing apparatus according to claim 1.

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