JP2002169530A - Image display - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image display that can exhibit a page turning in a natural fashion while suppressing the lowering of the speed of image processing and the increase of man-hours. SOLUTION: In the image display 10 for calculating page turning in which the upper page is turned over and the lower page is shown by two-dimensional image processing and displayed, a shape storage part 11 stores the basic shape, position and posture when the upper page is turned over by 100%, and a size change part 12 changes the size of the basic form according to the degree of page turnover, and the shape of the part which has been turned over is determined according to the extent of the turnover. On the basis of the image of the upper page, the image of the lower page, and the shape of the part which has been turned over after the size was changed by the size change part 12, the image compositing part 13 composites an image in the midst of the page turning, and displays the resultant image on the image display part 14.

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 which calculates and displays a page turn in which an upper page is turned up and a lower page appears by two-dimensional image processing.

[0002]

2. Description of the Related Art Conventionally, in an image display device provided in a video editing device, a display has been provided with a display effect called a page turn in which an upper page is turned and a lower page appears. I have. Here, there are two types of image processing for realizing a page turn: a two-dimensional image processing type and a three-dimensional image processing type.

In the two-dimensional image processing type, an image is processed by two-dimensional (X, Y) data, and a page turn is realized by performing a work so that the image looks pseudo three-dimensionally.
Although the image processing speed is fast, and the development time of the effect is short and the development cost is low, the viewpoints can not be changed and the effect result is poor reality. is there.

On the other hand, the three-dimensional image processing type (texture mapping) processes an image using three-dimensional (X, Y, Z) data, so that the viewpoint can be freely changed and the effect can be changed. The advantage is that the result is very real, but the disadvantage is that the image processing speed is slow. Further, since the processing is complicated, there is a disadvantage that the development period is long and the development cost is high.

FIG. 24 is a diagram showing page turns by two-dimensional image processing in a conventional image display device.

[0006] On the screen 100 shown in FIG. 24, the upper page 101 is displayed on the screen 1 as a result of the calculation by the two-dimensional image processing.
A state in which a part of the image of the lower page 102 is displayed by turning from “upper left” to “lower right” of 00 is shown.
By doing so, in the video editing device,
As the video progresses, it is possible to give a realistic effect of giving an impression as if the user flipped the current page and opened a new next page.

[0007]

However, in the page turn by the two-dimensional image processing shown in FIG. 24 of the image display apparatus described above, when a part of the upper page 101 is turned,
Boundary line 103 between the back of the upper page and the lower page 102
Of the end portions 103a and 103b have a folded fold, which is unnatural in appearance. Although it is known that the above-described three-dimensional image processing should be performed to solve such a problem, the three-dimensional image processing slows down the image processing speed, increases the development period, and increases the development cost. The problem occurs.

The present invention has been made in view of the above circumstances, and has as its object to provide an image display device capable of displaying a page turn with a natural feeling to the eyes while suppressing a reduction in image processing speed and development man-hours. I do.

[0009]

According to the present invention, there is provided an image display apparatus which calculates and displays a page turn in which an upper page is turned and a lower page appears by two-dimensional image processing. In, a shape storage unit that stores the basic shape of the turned part, and by changing the dimensions of the basic shape stored in the shape storage unit according to the degree of the turn, the turn according to the degree of the turn Based on the image of the upper page, the image of the lower page, and the shape of the turned-up part whose dimensions have been changed by the dimension changing unit, An image synthesizing unit for synthesizing an image, and an image display unit for displaying the image synthesized by the image synthesizing unit are provided.

In the image display device of the present invention, a basic shape representing a turned portion is defined, and an image of an upper page, an image of a lower page, and the dimensions of the basic shape are changed by the size changing unit. Since the image in the middle of the page turn is synthesized and displayed by two-dimensional image processing based on the shape of the turned part after the turning, the folded shape of the paper is rounded as its basic shape. By defining the shape as a shape, it is possible to display a natural-looking page turn while taking advantage of the high processing speed of the two-dimensional processing.

Here, the shape storage unit stores the position and orientation of the basic shape with respect to the display image together with the basic shape. The size changing unit stores a turning start point on the display screen. And, on each line connecting a plurality of points on the basic shape arranged at the position and orientation stored in the shape storage unit, so that each point after the dimension change is located on the basic shape, It is preferable to obtain the position and orientation of the shape of the turned part after the dimensions are changed.

In this manner, the shape data of the turned portion having the position and orientation corresponding to the current turning degree can be obtained by a simple calculation, and the processing can be further simplified and speeded up. Can be. In addition, if such a method is adopted, the page turning direction is also “upper left to lower right”, “lower left to upper right”, “upper right to lower left”, “ It can be freely selected from "lower right to upper left" and the reality is enhanced.

[0013] The shape storage unit stores the upper page as 1
In a preferred embodiment, the shape of the turned portion when the upper page is turned infinitely in the direction in which the upper page is turned when the page is turned by 00% is stored as the basic shape.

In this way, the shape of the turned-up portion after the dimensions have been changed can be easily obtained.

Further, the dimension changing section obtains information on the degree of the turn corresponding to the next frame to be displayed based on a predetermined turn function representing the degree of the turn according to the progress of the frame, and obtains the basic shape. May be changed to dimensions according to the information. Further, an operation unit for arbitrarily changing the turning function may be provided.

In this way, it is possible to select a free turning method, for example, turning slowly slowly at first and turning at once at the end.

[0017]

Embodiments of the present invention will be described below.

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

The image display device 10 shown in FIG. 1 is an image display device that calculates and displays a page turn in which an upper page is turned and a lower page appears by two-dimensional image processing.
The image display device 10 includes a shape storage unit 11, a size change unit 12, an image synthesis unit 13, an image display unit 14, and an operation unit 15.

The shape storage unit 11 stores the basic shape of the turned part. In addition, the shape storage unit 11 stores the position and orientation of the basic shape with respect to the display image together with the basic shape. Further, the shape storage unit 11
In this example, the shape of the turned portion when the upper page is turned 100% and the upper page is assumed to be infinitely extended in the turning direction is stored as the basic shape.

The dimension changing section 12 changes the dimensions of the basic shape stored in the shape storage section 11 according to the degree of the turn, thereby obtaining the shape of the turned portion according to the degree of the turn. . Further, the dimension changing unit 12 changes the dimension on each line connecting the turning start point on the display screen and a plurality of points on the basic shape arranged at the position and orientation stored in the shape storage unit 11. The position and orientation of the shape of the turned-up portion after the dimensions on the basic shape are changed so that each subsequent point is located are obtained. Further, the dimension changing unit 12
Based on a predetermined turning function indicating the degree of turning according to the progress of the frame described later, information on the degree of turning corresponding to the next frame to be displayed is obtained, and the basic shape is changed to a dimension corresponding to the information. Is what you do.

The image synthesizing unit 13 generates an image in the middle of a page turn based on the image of the upper page, the image of the lower page, and the shape of the turned-up portion whose dimensions have been changed by the size changing unit 12. Combine.

The image display section 14 displays the image synthesized by the image synthesis section 13.

The operation unit 15 has operators for arbitrarily changing the turning function and for inputting an image or a frame number.

In the image display device 10 according to the present embodiment, when a page turn in which an upper page is turned up and a lower page appears is calculated and displayed by two-dimensional image processing, a preparation step and an operation step described below are performed. Are performed.

First, the preparation stage will be described. In the preparation stage, the following four steps (1_1), (1_2), (1_2), which are sequentially executed before performing image processing, are performed.
— 3) and (1 — 4).

In step (1_1), operation points set for the image size, file, and the like (each point is positioned at a multiple of the image size at the level of 100% when the upper page is turned 100%) Is stored in the shape storage unit 11.

In step (1_2), the final point data (level 100%) is determined from the origin coordinates and the turning direction.
The coordinates of (time) are obtained by the dimension changing unit 12.

In step (1_3), the number of target frames (frames for performing page turn processing) is set in the image synthesizing unit 13 via the operation unit 15, and the first frame is set to 0% and the last frame is set to 100%. set.

In step (1_4), if necessary,
An arbitrary frame level (turning degree) is set in the image synthesizing unit 13 (the image synthesizing unit 13 linearly interpolates the level of each frame and sends it to the dimension changing unit 12 during image processing described later).

Next, the operation stages will be described. Here, the following four steps (2_1), (2_2),
(2_3) and (2_4) are executed.

In step (2_1), the two images and the frame numbers used in the page turn are transferred to the image synthesizing unit 13 via the operation unit 15.

In the step (2_2), the image synthesizing section 13
Retrieves the level data specified before and after from the passed frame number, and calculates the corresponding level data by linear interpolation.

In step (2_3), the calculated level value is passed to the dimension changing unit 12, and the coordinates necessary for image processing (from a guide point start GPS shown in FIG. End G
(Including everything up to PE). Here, the origin (0, -479) and any final point data (10
0, -239) as 100%, and the above step (2_
The coordinates are converted into the coordinates corresponding to the level obtained in 2) (here, 50%).

Final point data = 100, -239 Level = 50% Calculated coordinates = 50,120 X = 0 + ((100-0) × 0.5) Y = 479 + ((239-479) × 0. 5) In step (2_4), the obtained coordinates are stored in the image
The image synthesizing unit 13 applies a page turn effect, and outputs the result to the image display unit 14.

Next, details of image processing in the image display device 10 shown in FIG. 1 will be described. First, the coordinates required for image processing will be described with reference to FIG. 2, and then the detailed procedure of the image processing will be described with reference to FIGS.

FIG. 2 is a diagram showing a graph including coordinate points required for image processing in the image display device shown in FIG. Note that a rectangle A shown in FIG. 2 indicates an image area in the NTSC system.

In the image display apparatus 10 of the present embodiment, absolute coordinates are not used in the two-dimensional image processing.
The “final point data” that is the coordinates at the time of 00% is generated. Here, a page turn that is turned to the upper right with the lower left as the origin (0, -479) will be described as an example.

In the present embodiment, the first quadratic Pezier curve connects from the guide point start GPS to the Bezier point BP1 with the Bezier control point BCP1 as a control point. Subsequently, a second quadratic Pezier curve connects the Bezier point BP1 to the Bezier point BP2 using the Bezier control point BCP2 as a control point. Furthermore, after connecting the Bezier point BP2 to the Bezier point BP3 via the guide point center GPC by a straight line, the guide point end GPE is similarly connected by two Bezier curves. In this way,
Complete the outline of the rolled up part.

Next, the procedure of image processing will be described with reference to FIGS.

FIG. 3 is a diagram showing two images input to the image display device shown in FIG.

FIG. 3 (A) shows an image (old image) 21 of the upper page, and FIG. 3 (B) shows an image (new image) 22 of the lower page. In the present embodiment, these two images 21 and 22 are input, and an out-bit map which is an image area (an image area displayed on a screen) where a result is actually output, and a work image area 2 which is a work image area Two work bitmaps are provided, a calculation is performed by two-dimensional image processing according to the following procedure, and a page turn in which the old image 21 is turned and the new image 22 appears is displayed on the screen of the image display unit 14.

FIG. 4 is a diagram showing an image processing procedure 1.

FIGS. 4A, 4B and 4C show an out bit map 31 and a work bit map 32, respectively.
_1 and a work bitmap 32_2 are shown. In the image processing procedure 1, the old image 21 is copied to the out bitmap 31 shown in FIG. FIG.
(B), the work bitmap 32_ shown in FIG.
1, 32_2 is black (R.G.B = 0.
0.0). Next, the procedure proceeds to image processing procedure 2.

FIG. 5 is a diagram showing an image processing procedure 2.

In the image processing procedure 2, the new image 22 is copied to the work bitmap 32_1, and the flow advances to the image processing procedure 3.

FIG. 6 is a diagram showing the image processing procedure 3.

In the image processing procedure 3, in order to create a mask for displaying the lower left corner of the new image 22 in the work bitmap 32_2, the work bitmap 32_2 includes the Bezier control point BCP1 in the graph shown in FIG. Guide point start Bezier point BP from GPS
1, the Bezier curve, a straight line from the Bezier point BP1 to the Bezier point BP4, a Bezier curve from the Bezier point BP4 including the Bezier control point BCP4 to the guide point end GPE, and the origin, are connected to the mask. Find a rectangle, and
A black image (R.G.B = 0.0.0) indicated by oblique lines in the work bitmap 32_2 shown in FIG. 6 (C) is assumed to be an image on a white background. Next, image processing procedure 4
Proceed to.

FIG. 7 is a diagram showing an image processing procedure 4.

In the image processing procedure 4, an inter-image operation of subtracting the image of the work bitmap 32_2 from the new image 22 of the work bitmap 32_1 shown in FIG. 6 is performed, and as a result, as shown in FIG. The part where the old image 21 is displayed on the new image 22 in the work bitmap 32_2 is converted into a black image indicated by oblique lines.

FIG. 8 is a diagram showing the image processing procedure 5.

Here, the brightness of the image of the work bitmap 32_2 is inverted, and the work bitmap 32_2 is inverted.
Then, a mask (shaded area) corresponding to the portion where the old image 21 is displayed is created on 2 and the process proceeds to the image processing procedure 6.

FIG. 9 is a diagram showing the image processing procedure 6.

In the image processing procedure 6, an inter-image operation of subtracting the image of the work bitmap 32_2 from the old image 21 of the out bitmap 31 is performed. This allows
The part shown by the diagonal lines on the old image 21 in the out bitmap 31 shown in FIG. 9A where the new image 22 is drawn is converted into a black image.

FIG. 10 is a diagram showing the image processing procedure 7.

Here, the image of the work bitmap 32_1 is added to the image of the out bitmap 31. As a result, the old image 21 and the new image 22 are synthesized in the out bitmap 31 as shown in FIG. Next, the procedure proceeds to the image processing procedure 8 in order to create a back portion of the turning up.

FIG. 11 is a diagram showing the image processing procedure 8.

In the image processing procedure 8, the Bezier point B including the Bezier control point BCP2 in the graph shown in FIG.
A Bezier curve from P1 to a Bezier point BP2, a straight line from the Bezier point BP2 to the guide point center GPC, a straight line from the guide point center GPC to the Bezier point BP3, and a Bezier point BP3 to a Bezier point BP4 including the Bezier control point BCP3. Bezier curve up to and Bezier point BP1
To the Bezier point BP4 to obtain a rectangle corresponding to the back portion of the roll-up, and this rectangle is represented by a white image (RGGB) of the work bitmap 32_2 shown in FIG. = 255.255.255), and the other portions are black images indicated by oblique lines. Next, the procedure proceeds to the image processing procedure 9.

FIG. 12 is a diagram showing the image processing procedure 9.

Here, the image of the work bitmap 32_2 is subtracted from the image of the out bitmap 31. As a result, as shown in FIG. 12A, the back portion of the upturn indicated by oblique lines is drawn on the old image 21.

FIG. 13 is a diagram showing the image processing procedure 10.

Here, the brightness of the image of the work bitmap 32_2 is inverted. Thereby, a hatched portion corresponding to the back portion of the roll-up is created on the work bitmap 32_2.

FIG. 14 is a diagram showing the image processing procedure 11.

Here, on the work bitmap 32_1, a portion for creating a light reflection portion on the back portion of the turning up is drawn, and the flow advances to the image processing procedure 12.

FIG. 15 is a diagram showing the image processing procedure 12.

Here, the portion drawn on the work bitmap 32_1 by subtracting the image of the work bitmap 32_2 from the image of the work bitmap 32_1 is
Pull it out according to the shape of the back of the roll.

FIG. 16 is a diagram showing the image processing procedure 13.

Here, the image of the work bitmap 32_1 is added to the image of the out bitmap 31, and the reflected light of the turned-up light is combined with the image of the out bitmap 31.

FIG. 17 is a diagram showing the image processing procedure 14.

In this image processing procedure 14, the image of the out bitmap 31 is displayed on the screen of the image display section 14 shown in FIG. In this manner, one type of image processing from image processing procedure 1 to image processing procedure 14 for one frame is completed.

FIG. 18 is a diagram for explaining a comparison between a page turn in the conventional image display device and a page turn in the image display device of the present embodiment.

In the page turn in the conventional image display device shown in FIG. 18A, the folded shape of the paper when viewed from above has a folded fold, so that it looks unnatural. It is. On the other hand, in the page turn of the image display device 10 of the present embodiment shown in FIG. 18B, the folded shape of the paper when viewed from above is rounded as shown in the circle, and thus the appearance is A natural feeling is obtained.

Further, in the image display device 10 of the present embodiment, since the folding point of the paper viewed from above is shared with the intermediate connection point of the two Bezier curves, it is possible to reproduce a real “paper turning”. Can be. Further, the reflection (shadow) of light on the back surface can be easily drawn near a straight line connecting the turning points.

Further, in the image display device 10 of the present embodiment, since each final point data has information of "how many times the image size", the image size is free and the page can be turned. Can be freely selected from four types of “upper left to lower right”, “lower left to upper right”, “upper right to lower left”, and “lower right to upper left”.

In the image display device 10 of the present embodiment, the movement of each point is calculated based on "% of the position" of the final point, so that each point operates at a different movement pitch. And thus increase reality.

Next, the image display device 10 of the present embodiment
The manner in which the degree of turning is displayed according to the progress of the frame will be described with reference to FIGS.

FIG. 19 is a block diagram of the image display device shown in FIG.
It is a figure which shows the degree of the turn in the frame eyes.

FIG. 19A shows a screen of the image display unit 14 constituting the image display device 10 shown in FIG. FIG. 19B shows a graph of the turning function set by the operation unit 15 included in the image display device 10 shown in FIG. In FIG. 19, the degree (level) of the turn in the fifth frame of the 90 frames is 10
% Which is relatively small and therefore displayed on the screen.
The degree of turnover is also small.

FIG. 20 is a diagram showing the degree of turning in the 20th frame.

Here, the degree of turning in the fifth frame is relatively large at 80%, and therefore, the degree of turning of the old image 21 displayed on the screen is also large.

FIG. 21 is a diagram showing the degree of turning in the 40th frame.

The degree of winding in the 40th frame is 90
%, And therefore the old image 21 displayed on the screen
The degree of turnover is even greater.

FIG. 22 is a diagram showing the degree of turning in the 55th frame.

The degree of winding in the 55th frame is 60
%, So that the once-turned portion of the old image 21 is displayed in a manner of returning.

FIG. 23 is a diagram showing the degree of the turn in the 80th frame.

The degree of winding in the 80th frame is 80
%, So that the once turned part of the old image 21 is turned again and displayed.

As described above, the image display device 1 of the present embodiment
In the case of 0, since the point position data (data indicating what percentage of the position) as a turning function can be freely set by the operation unit 15, for example, turning slowly slowly at first and turning all at once at the end are possible. You can select a free turning method. In addition, since the point position data is linearly interpolated, the point positioning operation by the user is easy, the position data for each frame becomes unnecessary, and the memory can be saved.

In this embodiment, the upper page is 100
In the example described above, the shape of the turned portion when the upper page is turned infinitely in the turning direction of the upper page when the page is turned is stored in the shape storage unit 11 as the basic shape. However, the shape of the part that is turned in the direction in which the upper page is turned or returned when the upper page is turned, for example, by 50% is stored in the shape storage unit 11 as the basic shape. Is also good.

Further, in the present embodiment, the example of the shape storage unit for storing the position and orientation of the basic shape together with the basic shape has been described. However, the shape storage unit of the present invention may be any storage device that stores the basic shape. Good.

Further, in the present embodiment, each point after the dimension change is located on each line connecting the start point of the turning on the display screen and each of the plurality of points on the basic shape, and the frame is not moved. Although the description has been given of the example of the dimension changing unit that obtains the position and orientation of the shape of the turned part based on a predetermined turning function representing the degree of turning according to the progress, the size changing unit of the present invention is configured to have the size of the basic shape. May be changed according to the degree of turn-over to obtain the shape of the turned-up portion.

[0091]

As described above, according to the present invention,
It is possible to provide an image display device that can display a page turn with a natural appearance while suppressing a reduction in image processing speed and a development man-hour.

[Brief description of the drawings]

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

FIG. 2 is a diagram showing a graph including coordinate points required for image processing in the image display device shown in FIG.

FIG. 3 is a diagram showing two images input to the image display device shown in FIG. 1;

FIG. 4 is a diagram showing an image processing procedure 1.

FIG. 5 is a diagram showing an image processing procedure 2.

FIG. 6 is a diagram showing an image processing procedure 3;

FIG. 7 is a diagram showing an image processing procedure 4;

FIG. 8 is a diagram showing an image processing procedure 5;

FIG. 9 is a diagram showing an image processing procedure 6.

FIG. 10 is a diagram showing an image processing procedure 7;

FIG. 11 is a diagram showing an image processing procedure 8;

FIG. 12 is a diagram showing an image processing procedure 9;

FIG. 13 is a diagram showing an image processing procedure 10.

FIG. 14 is a diagram showing an image processing procedure 11;

FIG. 15 is a diagram showing an image processing procedure 12.

FIG. 16 is a diagram showing an image processing procedure 13;

FIG. 17 is a diagram showing an image processing procedure 14;

FIG. 18 is a diagram for explaining a comparison between a page turn in the conventional image display device and a page turn in the image display device of the present embodiment.

FIG. 19 is a diagram showing a degree of turning in a fifth frame of the image display device shown in FIG. 1;

FIG. 20 is a diagram showing the degree of turn-up at the 20th frame of the image display device shown in FIG. 1;

FIG. 21 is a diagram showing a degree of turn-up at the 40th frame of the image display device shown in FIG. 1;

FIG. 22 is a diagram showing a degree of turn-up in the 55th frame of the image display device shown in FIG. 1;

FIG. 23 is a diagram showing a degree of turning in the 80th frame of the image display device shown in FIG. 1;

FIG. 24 is a diagram showing page turns by two-dimensional image processing in a conventional image display device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Image display apparatus 11 Shape storage part 12 Dimension change part 13 Image synthesis part 14 Image display part 15 Operation part 21, 22 Image 31 Out bitmap 32_1, 32_2 Work bitmap

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/265 G09G 5/36 520M

Claims (5)

[Claims] 1. An image display device for calculating and displaying, by two-dimensional image processing, a page turn in which an upper page is turned and a lower page is displayed, and a shape storage unit for storing a basic shape of the turned portion. By changing the dimensions of the basic shape stored in the shape storage unit according to the degree of the turn, according to the degree of the turn,
A dimension changing unit for determining the shape of the turned part, and an image of the upper page, an image of the lower page, and the shape of the turned part after the dimensions are changed by the size changing unit, based on the shape of the turned part. An image display device, comprising: an image synthesizing unit for synthesizing an image of the above; 2. The shape storage unit stores a position and an orientation of the basic shape with respect to a display image together with the basic shape, wherein the size changing unit determines a turning start point on a display screen. On each line connecting a plurality of points on the basic shape arranged at the position and orientation stored in the shape storage unit, so that each point after the dimension change is located on the basic shape, 2. The image display device according to claim 1, wherein the position and orientation of the shape of the turned-up portion after the dimensions are changed are obtained. 3. The shape storage unit, wherein the upper page is 100
%, Wherein the shape of the turned portion assuming that the upper page is infinitely extended in the turning direction of the upper page is stored as the basic shape. 3. The image display device according to 1 or 2. 4. The size change unit obtains information on the degree of the turn corresponding to the next frame to be displayed based on a predetermined turn function representing the degree of the turn according to the progress of the frame, and obtains the basic shape. 4. The image display device according to claim 1, wherein the size is changed to a size corresponding to the information. 5. The image display device according to claim 4, further comprising an operation unit for arbitrarily changing the turning function.