KR20150059138A - Method for normalizing contents size at multi-screen system, device and computer readable medium thereof - Google Patents

Abstract

The present invention relates to a method for normalizing contents size of a multi-screen system, and an apparatus and computer readable recording medium and, more specifically, to a method for normalizing the contents size of the multi-screen system including the steps of: receiving a screen system parameter stored in a database; calculating a scale factor of an image projected to a main screen to match with the received screen system parameter; adjusting an image projected to the main screen by reflecting the calculated scale factor; and adjusting the scale of an image projected to a subscreen to match with the adjusted main screen image.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contents size normalizing method, an apparatus, and a computer readable recording medium,

The present invention relates to a method for adjusting a content size, and more particularly, to a method for normalizing a size of image contents projected from each of a plurality of projection surfaces on a projection screen having a plurality of projection surfaces.

Conventionally, a two-dimensional image is projected on a single screen disposed in front of an auditorium to reproduce images such as movies and advertisements in a theater. However, under such a system, the audience was forced to view only 2D (2D) images.

In recent years, 3D image technology has been developed that can provide stereoscopic images to the audience. 3D image technology is a technology that allows a user to feel stereoscopic effects in a plane image when different images are entered into the left eye and right eye of a person, The principle is to use two cameras equipped with different polarizing filters at the time of image capturing and to use glasses equipped with a polarizing filter at the time of viewing the images so that different images can be entered into the left eye and the right eye.

However, such a 3D technology can provide a stereoscopic image to a user, but still has a limitation in that the image itself is less immersive because it is merely viewing an image reproduced on a single screen. Also, there was a limitation that the direction of stereoscopic feeling that the audience perceives is limited to the direction in which a single screen exists. In addition, the conventional 3D technology is inconvenient to viewers because it is necessary to wear glasses or the like equipped with a polarizing filter at the time of watching the video, Sensitive audiences could feel dizziness or loudness.

Therefore, a so-called 'multi-screen screening system' which can solve the problems of the conventional screening system based on a single screen has been proposed (prior application of the present applicant). The 'multi-screen screening system' (A screen, a wall surface, and the like), and reproduces one unified image on a plurality of projected surfaces, thereby providing a three-dimensional feeling and an immersion feeling to the audience. In addition, the term "multi-screen movie theater" means an auditorium in which such a multi-screen screening system is built. 1 shows an example of a multi-screen display system.

In order to effectively operate the multi-screening system, techniques are required to effectively correct images projected on a plurality of projection surfaces. In the 'multiple screening system', a plurality of images projected on a plurality of projection planes other than a single projection plane must be integrally corrected, and the manner in which a plurality of images are corrected as the structure of an auditorium changes, Because the calibration process is very complex and the likelihood of errors is very high. Accordingly, there is a demand for technologies that can assist in the image correction process of such a multi-screen display system.

Korean Patent Publication No. 2012-0020793

An object of the present invention is to provide an image with a unified sense as a whole in a multi-screen theater.

According to an aspect of the present invention, there is provided a content size normalizing method comprising: receiving an audiovisual parameter stored in a database; calculating a scale factor of an image projected on a main screen according to a received audiovisual parameter; Adjusting the image projected on the main screen in accordance with the scale factor, and adjusting the scale of the image projected on the sub screen in accordance with the adjusted main screen image.

In another embodiment, the step of adjusting the scale of the image projected on the sub-screen may be adjusted so that the height of the image projected on the main screen coincides with the height of the image projected on the sub-screen.

In another embodiment, the step of adjusting the scale of the image projected on the sub-screen may be adjusted such that the pixel size or ratio of the image projected on the main screen and the image projected on the sub-screen is equal or less than a specific standard.

Meanwhile, in the embodiment of the present invention, when the main screen and the sub-screen are not continuous, after adjusting the scale of the image projected on the sub-screen, the position of the image projected on the sub- Step < / RTI > At this time, the position adjusting step can adjust the position of the image projected on the sub screen by the distance between the main screen and the sub screen.

In another embodiment, adjusting the image projected on the main screen when the main screen and the sub-screen are not consecutive may include enlarging the image projected on the main screen by applying an auditorium parameter and enlarging the enlarged image to the size of the main screen The main screen image can be enlarged by the ratio of the size of the screen and the size of the main screen.

In the present invention, the step of adjusting the image may adjust the aspect ratio of the image projected on the main screen.

The content size normalizing apparatus of the present invention includes a database storing auditorium parameters and a controller receiving auditorium parameters from the database and adjusting an image projected on a main screen and a sub screen, A main screen image adjustment module for adjusting an image projected on the main screen by reflecting the scale factor, and a scale factor calculation module for calculating a scale factor of the image projected on the sub screen in accordance with the adjusted main screen image And a subscreen image adjustment module for adjusting the scale.

In another embodiment, the subscreen image adjustment module can adjust the height of the image projected on the main screen to match the height of the image projected on the subscreen, and adjust the size of the image projected on the main screen and the size of the image projected on the subscreen The ratios may be the same, or the difference may be adjusted to be below a certain criterion.

In addition, the subscreen image adjustment module can adjust the position of an image projected on the subscreen by applying an auditorium parameter when the main screen parameter received from the database is not continuous between the main screen and the subscreen. At this time, the subscreen image adjustment module can adjust the position of the image projected on the subscreen by the distance between the main screen and the subscreen.

In another embodiment of the present invention, when the main screen and the sub screen are not continuous, the main screen image adjustment module enlarges the image projected on the main screen by applying the screen tube parameter, The main screen image adjustment module may enlarge the main screen image by a ratio of the size of the front surface of the screen and the size of the main screen. On the other hand, You can adjust the aspect ratio.

The present invention includes a form of a computer-readable recording medium embodying a program for executing the content size normalizing method of the aforementioned multi-view screen.

According to the present invention, it is possible to reproduce an image with a sense of unity in a multi-screen screening system that projects an image on a plurality of surfaces.

1 is a view showing an example of a structure of a multi-screen screening system.
2 is a flowchart illustrating a content size normalizing method according to an embodiment of the present invention.
3 is a configuration diagram of a content size normalizing apparatus according to an embodiment of the present invention.
FIGS. 4 to 6 show examples in which the present invention is applied to an auditorium having different auditorium parameters.
FIG. 7 is a diagram showing an example in which the contents size is normalized according to the application of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

2 is a flowchart illustrating a content size normalizing method of a multi-screen theater according to an embodiment of the present invention.

The present invention relates to an image processing method, comprising the steps of receiving an audiovisual parameter stored in a database, calculating a scale factor of an image projected on a main screen according to a received audiovisual parameter, adjusting an image projected on a main screen by applying a calculated scale factor And adjusting the scale of the image projected on the subscreen according to the adjusted main screen image.

A method according to an embodiment of the present invention is executed by a content size normalizing apparatus or the like, and receives an auditorium parameter from a database in order to normalize a content size. The parameters of an auditorium are information about the size and specification of the auditorium, and the size, height, screen size, and the like of the front, left and right sides of almost all the auditoriums are different. The parameters of the auditorium required to normalize the content size are as follows.

theaterWidth  = [Frontal length of the auditorium]

theaterDepth  = [The length of the left and right walls of the auditorium]

theaterHeight  = [Height of the auditorium front]

screenWidth  = [Width of screen]

screenOffset  = [Length from screen to ceiling]

screenRatio  = [Screen ratio]

By using the above parameters, various information such as the size of the front side of the screen, the size of the screen, the size of the side, and the like can be obtained, and the content size can be normalized to fit each screen. 1, 4, 5 and 6, a screen is disposed on the front side of the movie theater, and images are directly projected on the wall without separate screens on the left and right sides. However, this is merely an example, , The screen may be disposed on each of the side surfaces, or the image may be projected on the wall surface as it is.

1, 4, 5 and 6, screens are arranged on the front and left and right sides. However, the arrangement of the screens is not limited to the above, and the ceiling scene (upper surface) ) It can also be a projection surface on which an image is projected. A separate screen may be placed or the top / bottom itself may be a screen.

However, the present invention can be applied to a case where an image is projected not only on the front face, the left and right sides but also on the upper and lower sides when the height is changed to the width.

Meanwhile, in the present invention, the projection plane is divided into a screen (a main screen) serving as a reference of image projection and a screen (subscreen) projected by the image adjusted based on the projection screen. Hereinafter, , The front screen does not necessarily have to be the main screen.

After acquiring the hall parameter, the scale factor of the image projected on the main screen is calculated according to the received hall parameters.

The scale factor is determined by the type of the auditorium, in particular the ratio of the main screen, as a variable to be adjusted in order to adjust the size of the image content to the screen ratio of each auditorium.

As an example of the ratio of video content currently being screened at theaters, 2048 * 1080 pixels are distributed. Screen ratios of theaters are divided into two categories: scope type (width: length = 2.35: 1) and flat (1.85: 1) type The present invention can be applied to all the various screen ratios, and it is also possible to use a screen having a ratio different from the scope type or the flat type to the actual size of each screen, Can be applied.

Referring to FIG. 4, an example of calculating a scale factor in a scope type (2.35: 1) will be described. The image contents are digitally masked on the top and bottom of the image to match the scope type. For image content of 2048 * 1080pixels, the upper and lower 111pixels are digitally masked, and only the 2048 * 858pixel area is projected on the main screen. The 111pixel is projected at a ratio of 0.103 when viewing a 1080pixel length as 1, in an area 0.103 to 0.897 of the height of the image and 0.794 total length. However, figures such as 2048, 1080, 111, and 858 are only examples used in already-established auditoriums, and they do not have to be produced, reproduced, or projected, and may vary depending on the type of image and the specifications of auditoriums. .

The horizontal length of the image is adjusted based on that the vertical length of the image content is adjusted to 0.794 as a whole. Since the image content was originally 2048 * 1080 pixels, the scale factor for adjusting the width of the image is x

2048 * x * 1: 1080 * 0.794 = 2.35: 1

. In other words, a 2048 * 858 pixel digital masking of the top and bottom 111 pixels must be projected onto the 2.35: 1 screen

2048 * x: 0.858 = 2.35: 1

When the above equation is computed, the horizontal scale factor x = 0.984.

When the meaning of the above scale factor is interpreted, a 1pixel is a square shape having the same length and the same length. In order to match the image masked by the upper and lower 111 pixels to the screen ratio (2.35: 1) of the scope theater, When x (0.984 in this example) is applied, 1 pixel becomes a rectangular shape having a short width and a long height. When the scale factor is calculated in consideration of the ratio of the image contents and the ratio of the main screen and the scale factors are applied to the image contents projected on the main screen, the sizes and ratios of the unit pixels are changed. As a result, The ratio can be adjusted. That is, it calculates how to scale the image, adjusts the image based on the image, and records the degree of adjustment of the image according to each screen, thereby continuously tracking the degree of adjustment of the image for each screen.

The steps of adjusting the projected image on the main screen are expressed as follows.

Here, pixelRatio is a scale factor reflected on an image projected on a screen, contentRatio is a horizontal / vertical ratio of content, normWidth is a width of normalized content, and normHeight is a length of normalized content.

If the content ratio is smaller than 2.35, the content normalizing unit applies a scale factor to the horizontal direction based on the vertical direction of the image, and applies a vertical scale factor to the vertical direction based on the horizontal direction to adjust the pixel ratio and the image size do.

5 is a view showing content size normalization of a multi-screen theater including a main screen of a flat type (1.85: 1). In the example of calculating the scale factor in the case of FIG. 5, in the case of the flat type, the image of 2048 * 1080 pixels is adjusted to the ratio of 1.85: 1. 1998 * 1080 Since the image is 1.85: 1, the image should be adjusted to the size of 1998 pixels by multiplying the original horizontal pixel 2048 by 0.976.

Among flat-type auditoriums, if the ratio of width is smaller than 1.85: 1, for example 1.77: 1, the height is fixed at 1080pixel, so the width of 2048pixels should be adjusted. In this example, 2048 pixels should be multiplied by 0.933. If the horizontal ratio is greater than 1.85, adjust the vertical ratio while keeping the horizontal ratio unlike the previous example. In other words, the ratio of length to width is determined with 0.976 times the ratio of 1.85: 1. If the ratio of width is 2.35: 1

2048 * 0.976: 1080 * y = 2.35: 1

Therefore, y is 0.787. That is, the scale factor is applied to the side where the scale should be reduced on the basis of the already adjusted reference, and the ratio of the image is adjusted. According to the above method, the image can be adjusted according to various screening parameters.

The process of normalizing the main screen in the flat screen is shown below.

If the aspect ratio of the content is less than 1.85, the content normalizing adjusts the horizontal direction based on the vertical direction of the image, and adjusts the vertical direction based on the horizontal direction.

After adjusting the image projected on the main screen, adjust the scale of the image projected on the subscreen according to the adjusted main screen image.

The steps of adjusting the scale of the image projected on the subscreen are as follows (assuming that the left and right sides are scaled symmetrically, an equation is created based on the image projected on the right subscreen).

center_project_height and center_project_width are images projected on the main screen (scaled image), and based on this, the images projected on the subscreen are adjusted.

In the above equation, the height of the image projected on the right sub-screen and the image projected on the main screen are matched, and the height of the image projected on the sub-screen, considering the height- Determine the width.

However, it is not necessary to always match the height, and the height of the image projected on the subscreen may be higher or lower. This may vary depending on the nature of each content, the intention of the producer, and so on.

In addition, the aspect ratio of the images projected on the main screen and the subscreen can be set according to the user's needs.

In order to reproduce a totally unified image by projecting the image on both the front and side surfaces in the multi-screen theater, various elements of the front image and the side image must be unified.

In one embodiment, the image projected on the main screen and the image projected on the sub-screen are adjusted to coincide with each other so that continuity between the front image and the side image is maintained. In the examples shown in Figs. 4 to 6, the scales of the images are adjusted so that the heights of the images coincide with each other.

In the above example, the scale of the image projected on the subscreen is adjusted after adjusting the image projected on the main screen. However, the scale of the image projected on the subscreen is not limited to this order. You can also adjust the image projected on the screen. That is, the order described in the specification or the claims is not time-series, and the order may change.

However, in the system in which the present invention is applied, the viewer gazes mainly at the image contents projected on the front screen. In most cases, since the image projected on the front screen is the core of the contents, the front screen is regarded as the main screen, It is preferable to adjust it. In addition, the ratio of the front screen is standardized for each auditorium, while the side (scoped, flat type) side is different according to the structure of the auditorium, so it is more efficient to adjust the side screen based on the front screen.

In another embodiment for adjusting the scale of the image projected on the subscreen, the pixel size or ratio of the image projected on the main screen and the image projected on the subscreen may be the same or the difference may be adjusted to be less than a specific criterion. This embodiment is also for maintaining unity of the image. If the pixel size of the front image and the side image are equal to each other or equal to a corresponding level (the difference is less than a specific reference), the image is reproduced .

If the pixel size of the projected image on the main screen differs by more than a certain standard, the following problems may occur. Assuming that the pixel size of the image projected on the main screen is small and the pixel size of the image projected on the subscreen is large, a scene in which the person moves from left to right, that is, the person is a left subscreen, A person is initially displayed at a low resolution on the left side and then displayed at a high resolution instantly as it moves to the center (front side), and is displayed at a low resolution as soon as it moves to the right side again. The viewer will see the person whose resolution of the image continuously changes in one scene, and the immersion is reduced. In addition, if the pixel size of each projection plane is different even in a scene in which the background is displayed on the entire surface of the polyhedron, images having different resolutions are reproduced, so that they can be recognized as different scenes even though they are one scene.

Accordingly, in this embodiment, the pixel size of the image projected on the main screen and the image projected on the sub-screen are adjusted to be equal to or less than a specific standard.

In another embodiment, the ratio of the front image to the side image may be adjusted. The image projected on the main screen is a square having a ratio of pixels of 1: 1, a rectangle having a ratio of 1: a, and a rectangle having a ratio of b: 1 (a and b are values between 0 and 1) . Therefore, the same image contents can be expressed differently according to the ratio of the pixels. For example, the same person image can be expressed with a slimmer (pixel ratio b: 1) or fatter (pixel ratio 1: a) depending on the pixel ratio.

If the image is reproduced on several surfaces, the image reproduced on each surface of the auditorium should be expressed equally to the user. Therefore, if the ratio is changed depending on which side of the image is displayed on the left, right side or front side, Interfere with. For this purpose, in the present embodiment, the ratio of the front image and the side image is the same or the difference is adjusted to be less than a specific reference. Particularly, in adjusting the ratio, the scale factor calculated in the step of calculating the scale factor is also reflected on the image projected on the subscreen so that the main screen and the subscreen can be coherently and integratedly reproduced.

In another embodiment of the present invention, when the main screen and the sub-screen are not continuous, after adjusting the scale of the image projected on the sub-screen, the position of the image projected on the sub-screen is adjusted by applying the hall parameter . This embodiment will be described with reference to FIG.

Comparing FIG. 6 with FIGS. 4 and 5, the main screen and the sub screen are spaced apart. This gap can often occur when a multi-screen system is applied to a commercial movie theater. Many of the currently operating cinemas have a certain amount of space where the images are not actually projected to the left or right of the main screen because the main screen is smaller than the front of the screen. Therefore, when the multi-screening system is applied, a space as shown in FIG. 6 is generated.

In order to reproduce a totally unified image in spite of the above-mentioned spaced space, it is necessary to reproduce the image as if the image exists even in a space where the image is not expressed. In other words, in FIG. 6, A and A 'should not be connected to each other in the entire image, but must be reproduced so as to be different from each other even in the image. If A and A 'represent the same point in the image, the viewer sees that the left side, front side, and right side images are separated by the separation space, respectively. However, when the difference in the entire image is made as much as the spacing space as in the present embodiment, the overall continuity increases.

In this embodiment, the position of the image projected on the subscreen is shifted toward the main screen by the gap spacing. In other words, the position of the image is adjusted by cutting the image projected on the side as much as the width of the gap space and moving the image. As a result, the same effect as described above appears.

The width of the spacing space can be calculated using the hall parameter stored in the database. We use theaterWidth (the frontal width of the auditorium) and screenWidth = [the width of the screen] among the above screening parameters.

margin = ( theaterWidth  - screenWidth ) / 2

Where margin is the width of the spacing space.

However, there may be cases in which the main screen is not arranged in the center of the screen of the auditorium for each auditorium. That is, margin_left and margin_right may be different from each other. Therefore, the margin can be calculated by the above equation, the margin_left and margin_right can be additionally included in the auditorium parameters stored in the database, and the image can be adjusted considering the spacing space based on the stored information.

According to another embodiment of the present invention, when the main screen and the sub screen are not continuous, the step of adjusting an image projected on the main screen may include enlarging the image projected on the main screen by applying an auditorium parameter, You can crop it to fit the size of the main screen.

In this embodiment, the size of the image is adjusted rather than the position of the image to maintain the continuity between the main screen and the sub-screen. If the spacing space is caused by the size of the main screen and the size of the auditorium (eg, auditorium front size), the image projected on the main screen is enlarged by the size of the auditorium. It is preferable that the enlarged image has a size that is connected to the sub screen without space.

After enlarging the image, crop the enlarged image to fit the size of the main screen and project the cropped image onto the main screen.

After this, the scale of the image projected on the side screen is adjusted based on the image projected on the main screen (enlarged and cropped image).

The contents size normalizing method of the present invention described above is implemented by an apparatus for performing this. For example, various computing devices can be utilized. For example, in a computing device including a database and a processor, an auditorium parameter stored in a database is transmitted to a processor, and the processor performs each step mentioned in the above embodiment, Transmits the reflected control command to an external device (e.g., a projector), and normalizes the content size in the multi-screen theater.

The method of the present invention may be implemented in the form of a program for executing the program, and a computer-readable recording medium containing such a program should be included in the scope of the present invention.

Hereinafter, the present invention will be described in terms of apparatus. 3 is a configuration diagram of a content size normalizing apparatus according to an embodiment of the present invention. The apparatus includes a database storing auditorium parameters and a controller receiving auditorium parameters from the database and adjusting an image projected on a main screen and a sub screen, A scale factor calculation module for calculating a scale factor of the image, a main screen image adjustment module for adjusting an image projected on the main screen in accordance with the scale factor, and a scale of an image projected on the subscreen according to the adjusted main screen image Screen image adjustment module. That is, it includes a configuration for storing basic information necessary for normalizing and a configuration for normalizing the content using the basic information.

According to an embodiment of the present invention, the subscreen image adjustment module can adjust the height of the image projected on the main screen to coincide with the height of the image projected on the subscreen. Details are described in the description of the method of the present patent, so duplicated description is omitted.

In another embodiment, the subscreen image adjustment module may adjust the pixel size or the ratio of the image projected on the main screen and the image projected on the subscreen to be equal to or less than a specific criterion.

In addition, the subscreen image adjustment module can adjust the position of the image projected on the subscreen by applying the hall parameter when the main screen parameter received from the database and the subscreen are not continuous. As an example, the position of the image projected on the subscreen can be adjusted by the distance between the main screen and the subscreen.

In the case where the main screen and the sub screen are not continuous, the main screen image adjustment module enlarges the image projected on the main screen by applying an auditorium parameter, and crops the enlarged image according to the size of the main screen At this time, the main screen image can be enlarged by the ratio of the size of the front side of the screen and the size of the main screen.

On the other hand, the main screen image adjustment module can adjust the aspect ratio of the image projected on the main screen.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. You should see.

Claims (13)

Receiving an auditorium parameter stored in a database;
Calculating a scale factor of an image projected on the main screen in accordance with the received hall parameter;
Adjusting an image projected on the main screen reflecting the calculated scale factor; And
Adjusting a scale of an image projected on a sub screen in accordance with the adjusted main screen image;
A content size normalizing method of a multi-screen theater including
The method according to claim 1, wherein the step of adjusting the scale of the image projected on the sub-screen adjusts the scale of the image to be projected on the main screen to match the height of the image projected on the sub-screen.
The method of claim 1, wherein the adjusting the scale of the image projected on the sub-screen comprises adjusting the scale of the image projected on the main screen and the image projected on the sub- A contents size normalizing method of a multi-screen theater
The method of claim 1, wherein adjusting the image projected on the main screen when the main screen and the sub-
The method comprising: enlarging an image projected on a main screen by applying an auditorium parameter; and cropping the enlarged image in accordance with the size of the main screen. The content size normalizing method of the multi-
[Claim 4] The method of claim 4, wherein the main screen image is enlarged by a ratio of a size of an auditorium to a size of a main screen,
The method as claimed in claim 1, wherein the step of adjusting the image adjusts the aspect ratio of the image projected on the main screen,
A computer-readable recording medium having recorded thereon a program for executing a content size normalizing method of a multi-image screening method according to any one of claims 1 to 6,
A database in which auditorium parameters are stored; And
A control unit for receiving an auditorium parameter from the database and adjusting an image projected on a main screen and a sub screen;
, ≪ / RTI &
The control unit
A scale factor operation module for calculating a scale factor of an image projected on the main screen in accordance with the received hall parameter;
A main screen image adjustment module for adjusting the image projected on the main screen in accordance with the scale factor; And
A subscreen image adjustment module for adjusting the scale of the image projected on the subscreen according to the adjusted main screen image;
The contents size normalizing apparatus of the multi-
The apparatus of claim 8, wherein the subscreen image adjustment module adjusts the height of the image projected on the main screen to match the height of the image projected on the subscreen.
9. The multi-screen theater according to claim 8, wherein the sub-screen image adjustment module adjusts a pixel size or a ratio of an image projected on a main screen and an image projected on a sub- Content size normalizing device
9. The system of claim 8, wherein the main screen image adjustment module
Wherein when the main screen and the sub screen are not continuous, the screening parameter is applied to enlarge the image projected on the main screen, and the enlarged image is cropped according to the size of the main screen. Size normalizing device
The content size normalizing apparatus according to claim 11, wherein the main screen image is enlarged by a ratio of a size of an auditorium and a size of a main screen,
9. The content size normalizing apparatus according to claim 8, wherein the main screen image adjustment module adjusts the horizontal and vertical ratios per pixel of the image projected on the main screen,

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