KR20150033320A - Projector for variable projection image and projection system using it - Google Patents

Abstract

The present invention relates to a projector for varying a projected image, capable of projecting a reduced image on a surface not covered by a person on a screen when the person appears to cover an image being projected on the screen, thereby allowing contents to be displayed as an image to be viewed without omission and preventing the image from being projected on the person, eliminating discomfort due to image projection on the person, and capable of using a stockroom installed as facilities as a screen, rather than preparing an additional screen, to effectively expose an advertisement image in a busy area, and a projection system employing the same. The projector includes an obstacle sensing unit detecting an appearance position of an obstacle covering an image projected to a screen, whereby an image is reduced to be projected to the screen not covered by the obstacle.

Description

TECHNICAL FIELD [0001] The present invention relates to a projection type variable projector and a projection system using the same,

The present invention relates to a method and apparatus for projecting a reduced image on a screen that is not covered by a human being on a screen when a person who shields the projection of the image appears while projecting the image on a screen, The projector is not provided with a projection screen and does not have any discomfort due to the projection of the image. Instead, the projection screen is not prepared. Instead, the projector is installed on the screen as a screen to effectively expose the advertisement image. And a projection system employing the same.

A projector is a display device that displays video or electronically generated images on a screen and displays them as images. It is mainly used for outputting large-sized images to a large number of people.

In addition, a screen for projecting an image by projecting the projector is provided separately from the projector, and a roll type screen may be used, but it may be a substitute for forming a surface for projecting an image like a wall surface.

In this way, a projection system composed of a projector and a screen is used as an advertising means for exposing an advertisement image to an unspecified number of people by installing the projector system in a subway station, a bus terminal, an airport, or the like,

The projection system to be used as an advertisement means can be constituted by a transmissive type in which a projector is installed at the rear of a screen viewed by people. However, since a space for installation is large, generally, in order to minimize a space for installation, Install the projector and project it on the screen.

However, since the place where the projection system is installed as an advertising means is a place with a lot of floating population, it often happens that people pass between the projector and the screen while projecting the image onto the screen with the projector. As a result, images can be projected to passersby to give an uncomfortable feeling, and images projected on the screen are hidden by passersby, so that the contents of the images can not be displayed perfectly on the screen.

On the other hand, the subway station, the bus terminal, and the airport are equipped with a storage box for people to store their belongings. Since the lockers are stacked in the width direction and the height direction and the door openings of the locker are arranged in the form of a lattice when viewed from the front, such a wide surface can be used as a projection plane of the screen.

In this case, if the advertisement image is projected in the storage box, the advertisement image can be projected by not only the person who wants to keep the article but also the person passing the front of the storage box, and there are many people passing the storage box. It is difficult to see the advertising effect because the image is hidden.

KR 20-0296398 Y1 Nov. 29, 2002. KR 10-2001-0083678 A 2001.09.01.

An object of the present invention is to provide an image processing apparatus and a method of processing an image on a screen by projecting the image without any obstruction and without any obstruction, A projecting image variable projector which can effectively expose an advertisement image by using a storage box installed in a place with a large floating population as a screen substitute, and a projection system employing the projector.

According to an aspect of the present invention, there is provided a projector for projecting an image on a screen in a direction of viewing an image projected on a screen, the projector projecting an image on a projection plane of the screen by varying an image according to a position of the obstacle, And an obstacle detection unit that detects an appearance position of an obstacle that obstructs an image projected toward the obstacle, wherein the image is reduced and projected on a screen not obstructed by the obstacle.

A shielding area is set by extending a surface obscured by the obstacle on the projection plane of the screen to the upper end of the projection plane and the image is projected in a width direction in accordance with the size on the plane having the widest plane among the faces divided by the blocking area .

When the difference in area between the widest plane and the second largest plane among the planes divided by the blocking region is smaller than a predetermined difference, the images are simultaneously reduced and projected on the widest plane and the second broad plane, respectively, .

The image projection in the direction other than the direction in which the reduced image is projected is blocked without changing the range in which the image is projected.

Wherein the obstacle sensing means is configured to direct a plurality of infrared sensors for sensing the human body to the screen, and to detect the appearance and direction of the human body by setting different sensing directions.

Wherein the obstacle detecting unit detects whether or not the obstacle is moved and projects the image as a plane on which the entire screen is projected when the obstacle moves in an area covering the image projected on the screen, In this case, the image is reduced and projected on a screen not covered by the obstacle.

The present invention relates to a projection system comprising a projector and a screen, in which a surface of a storage box having a hinged door in front of partitioned inner spaces is formed as a projection surface of a screen, And a projection image variable type projector according to any one of claims 1 to 6, wherein the advertisement image is projected onto the storage box.

The projected image variable type projector receives the information of the position of the open hinged door from the control unit of the storage box, and a closed brigade is provided on the front side of the doors, except for the open hinged door, And the reduced image is projected on a plane formed by the projected image.

According to the present invention configured as described above, when an obstacle appears while an image is projected on a screen, the image is reduced and projected on a surface not obstructed by an obstacle, so that contents to be displayed by the image can be transmitted through the screen without missing, Even if it appears as an obstacle, it is prevented from projecting the image to a person, so that it is not discomfortable, so that it can be installed and used in a place where people come and go frequently.

In addition, since the present invention is not limited to the use of the front surface of the storage box as a projection surface of the screen and a separate screen may not be installed, it is effective in terms of space utilization, and a person passing the storage box as well as a person The advertisement image is perfectly projected, and the reduced image is changed according to the appearance of the person and the movement of the person, so that the dynamic image is displayed, so that the advertisement effect can be enhanced by attracting the attention of the person.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a projector of a projection image variable type according to an embodiment of the present invention; FIG.
FIG. 2 is a view showing an installation state of a projection image variable projector according to an embodiment of the present invention and a projection system using a storage box as a screen.
FIG. 3 is a view showing an image projected on a screen in the absence of an obstacle in FIG. 2; FIG.
FIG. 4 is a view showing an image projected on a screen when an obstacle appears in FIG. 2; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. It should be noted that, in the drawings, the same reference numerals are used to denote the same or similar components in other drawings. In the following description of the present invention, a detailed description of known functions or known configurations of the projector will be omitted when it is determined that the gist of the present invention may be unnecessarily obscured.

1 is a block diagram of a projector for projected image variability according to an embodiment of the present invention.

Referring to FIG. 1, the projector 10 according to the embodiment of the present invention includes an image source storage unit 13 for storing a moving image or a still image to be projected on a screen 20, An obstacle detecting means 14 for detecting an obstacle covering the screen 20 in a direction of projection onto the screen 20 by the projection module 11, And an image controller 12 for controlling the image projection of the projection module 11 so as to project an image on the screen 20 according to a preset condition.

Generally, when projecting the image stored in the image source storage unit 13 to the projection module 11 and causing the image to be displayed on the screen 20, the projector determines a projection plane on which the image is projected on the screen 20 The focus adjustment is performed according to the distance between the projection module 11 and the screen 20 and the angle of view of the projection module 11 is adjusted according to the size of the screen 20 so that an image focused on the size of the projection plane is displayed And the image controller 12 controls the projection module 11 according to the value set for focus adjustment and angle of view adjustment so that the image is projected on the screen 20. [ It is also possible to preset the conditions for the size of the screen 20, the distance between the screen 20 and the projection module 11, the projection direction and the like in accordance with the characteristics of the projection module 11, And the screen 20 are disposed to adjust the focus and the angle of view. Since such a focus and angle of view adjustment are known techniques, a detailed description will be omitted.

The projector 10 according to the embodiment of the present invention is provided to project an image on a screen in a direction in which an image projected on the screen is projected so that the projected image on the screen 20 The obstacle detection unit 14 is configured to vary the image according to the position of the obstacle so as to project the image without damage to the area not covered by the obstacle in the projection plane of the screen 20, , The image controller 12 adjusts the size and the projection position of the reduced image according to the position of the obstacle detected by the obstacle detecting means 14.

The obstacle detecting means 14 appears on the screen 20 and the projection module 11 when the beam is irradiated onto the projection module 11 so that the image is displayed on the projection plane on the screen 20, Which obstructs it from being irradiated.

The obstacle detecting means 14 may be a means for detecting an obstacle between the screen 20 and the projection module 11 or a means for detecting an obstacle between the screen 20 and the projection module 11, And a means for detecting an obstacle appearing in the vehicle.

First, the obstacle detecting means 14 fixed to the projection module 11 is constituted by a plurality of infrared sensors which are arranged with the sensing direction directed toward the screen 20, but the sensing directions are different from each other, Can be detected as the appearance of the obstacle, and the position of the obstacle can be detected by the position of the infrared sensor which senses the human body. Here, the position of the obstacle refers to the direction in which the obstacle is present when the obstacle detecting means 14 looks at the screen 20.

The infrared sensors may be provided with barrier ribs between the infrared sensors so as to generate the detection signal only when the human body appears in the area to which the sensing direction is allocated.

Alternatively, the obstacle detecting means 14 may be constituted by an infrared camera for sensing the body temperature of the human body, thereby detecting the appearance and the position of the human body.

As another alternative, the obstacle detecting means 14 may include a camera for photographing the screen 20 and an image processor for mutually comparing the image photographed by the camera with the image projected by the projection module 11, It is possible to detect the obstacle by the difference of the image.

The obstacle detecting means of the system installed on the screen may be constituted by a plurality of infrared sensors distributed on the screen 20 to detect a human body appearing in front of each infrared sensor. At this time, the obstacle becomes the human body, and the position of the detection sensor becomes the appearance position of the obstacle. Another alternative is to use infrared sensors instead of infrared sensors to detect the light reflected from obstacles, so that the presence of obstacles other than the human body can be detected.

On the other hand, when the obstacle detecting means of the method of fixing to the projection module 11 or the method of installing on the screen is constituted by a plurality of infrared sensors, it is also possible to detect whether the obstacle is moved. That is, when the obstacle is continuously detected by only one infrared sensor, the obstacle is stopped, and when any one infrared sensor detects the obstacle but is not sensed after a lapse of time, (20). ≪ / RTI > At this time, the determination of the movement and the stop of the obstacle is made by comparing the time difference (the time difference from the start of detection to the end of detection) of an obstacle in one infrared sensor to a preset threshold value, If it is detected by the infrared sensor adjacent to the threshold value or below the threshold value, it is determined that the obstacle is moved.

In the case of detecting an obstacle by decoding an infrared camera or a camera image, it is possible to detect whether the obstacle is moved by discriminating a pixel position fluctuation of the obstacle image obtained by the image reading.

According to the present invention, when the obstacle detecting means 14 senses an obstacle that obscures the image projected toward the screen, the image controller 12 can block the obstacle from the obstacle in the projection plane of the screen 20 The image is reduced and projected on the unsupported surface so that the image can be viewed without missing through the screen 20 while the image is not projected on the obstacle.

The image before being blocked by the obstacle must be projected onto the screen 20 without damage or exclusion, so that the image is reduced and projected.

In addition, even if the image is reduced, it is preferable to minimize the reduction ratio and project it onto the screen 20 if possible. Therefore, if possible, reduce the reduction ratio of the face not covered by the obstacle, Project the image.

The image can be reduced in the width direction or reduced in the height direction. As a concrete example of the present invention described with reference to FIGS. 2 to 4, when the projector is used, it is often reduced in the width direction, but it is also preferable to reduce the height direction.

It is possible to use a projection module capable of adjusting the projection direction and the projection area in order to project the reduced image. However, in the embodiment of the present invention, as described above, When the reduced image is projected according to the appearance, the reduced image is adjusted to the position by the image processing so as to be projected.

Specifically, the angle of view of the projection module 11 is not changed, the size of the projection plane is maintained, and instead, the image to be projected is sub-sampled by, for example, (A position not covered by the obstacle), and a projection image of the remaining pixels is generated, and then the projection image is projected onto the projection plane of the screen. That is, the image projection in the direction other than the direction in which the reduced image is projected is blocked without changing the range to be projected to the projection module 11, so that the beam is not irradiated to the remaining surfaces except for the plane on which the reduced image is projected No.

As described above, in the projection type variable projector 10 according to the embodiment of the present invention, when an obstacle blocking the image is not perfectly projected on the screen during the projection of the image on the screen, the image is reduced, It is possible to display the contents displayed or expressed on the image without fail, and since the image is not projected to a person when the person appears at the screen in front of the screen, the inconvenience or discomfort caused by projection of the image onto the human body Do not incur.

According to the present invention, even if an obstacle appears in front of the screen, the projector can fully transmit the contents to the reduced image, Without giving offense to the person who is the obstacle, so that it can satisfy both the viewer of the screen and the person who is in front of the screen.

The projected image variable projector according to the present invention configured as above can be used as a screen substitute for a storage box installed in a subway station, a terminal, a university, a convention center, a library, a hospital, a building, Can be used to output images.

FIG. 2 is an installation state diagram of a projection type variable projector 10 according to the embodiment of the present invention and a projection system using the storage box 30 as a screen. FIG. FIG. 4 is a view showing an image projected on a screen when an obstacle appears in FIG. 2; FIG.

Referring to FIGS. 2 to 4, a product storage box 30 having a hinged door is disposed in front of the divided inner spaces. The product storage box 30 is provided in front of the storage box 30, The variable projector 10 was provided to constitute the projection system with the article storage box 30 and the projector 10 for projection image.

In the embodiment of the present invention, the storage box 30 shown in FIGS. 2 to 4 comprises a storage unit 32 for storing articles and a control unit 31 for opening and closing the door doors of the storage unit 32. The housing portion 32 has a shape in which a plurality of lockers each having a hinged door in front of the partitioned inner spaces and each having a hinged door at the front are arranged in the width direction and the vertical direction, And when the doors are closed, the hinges are connected to each other in the width direction and the vertical direction.

The projected image variable projector 10 provided on the front surface of the housing portion 32 with the front surface of the wide plate made of the hinged doors of the housing portion 32 as the projection surface of the screen 20, As shown in FIG.

The electronic unit 31 includes a settlement processing operation for storing an article, an operation for selecting a vacant one of the lockers of the container unit 32 and opening the shackle door when the settlement processing is performed, An operation of guiding the user to close the sliding door by monitoring whether the sliding door is closed, an operation of opening the sliding door of the locker that stores the user's item when the user searches for the stored article, and an operation of locking the sliding door after accessing the article . Accordingly, when the user puts the article into the locker opened when the article is stored and pushes the shackle door to close it, the article can be taken out from the locker that is opened even when the article is being searched and the shackle door can be pushed to close, Removing or minimizing the handle for opening and closing the hinged door makes the overall surface smooth.

Therefore, it is possible to use the front surface of the hermetically sealed part 32 as the projection surface of the screen. It is preferable that the front surface of the hinged doors of the housing portion 32 is powder coated on the surface in order to make the projection surface of the screen.

3, the advertisement image is displayed on the front surface of the housing section 32. In this case, the advertisement image is projected onto the projector 10 by using the front surface of the housing section 32 as the projection plane of the screen 20, . Here, the advertisement image to be projected may be a still image or a moving image. By using the housing portion 32 of the storage box 30 as the screen 20, it is not necessary to provide a separate screen, and even when the wall surface is conventionally used as the projection surface of the screen, No wall surface may be prepared separately. That is, it is very useful in terms of space utilization by utilizing the installed article storage box 30 according to necessity of storing articles.

Since the storage room 30 is provided not only for the user who stores the product but also for a lot of people, there are many cases where people pass or pause in front of the container portion 32 used as the screen 20, As shown in FIG. 3, when the advertisement image is projected using the screen 20 as the front surface of the container portion 32, the advertisement image is not obscured by a person and can not be projected onto the screen 20 without missing.

4, the obstacle A appears in front of the screen 20, and the obstacle A is obstructed in the image so as to be projected onto the screen 20 The image is projected on the surface of the screen 20 that is not covered by the obstacle A by reducing the image.

Since the obstacle A appearing in front of the article storage box 30 is a standing person in general, the surface not covered by the obstacle A on the projection plane of the screen 20 is divided into the At this time, the image is projected in the width direction in accordance with the size of the wider surface in the both side surfaces. The top and bottom were not reduced. Referring to FIG. 4, since the obstacle A is on the left side with respect to the center point in the width direction of the screen 20, a reduced image is projected on the right side.

When the obstacle A appears on the front side in the vicinity of the center point in the width direction of the screen 20, the difference in area between both sides of the obstacle A divided centered around the obstacle A becomes small.

Accordingly, when the position of the obstacle is detected by the obstacle detecting means 14, the image controller 12 of the projector 10 according to the embodiment of the present invention detects an area difference between both sides of the obstacle- And if the comparison result indicates that the difference is smaller than the preset difference, the image reduced according to the area size of each of the two sides is displayed in accordance with the pixels corresponding to both sides, and is projected to the projection module 11 . That is, in the image projected to the projection module 11, there are two portions in which the advertisement image is reduced. Here, the predetermined difference may be appropriately determined according to the area of the front surface of the container portion 32 of the storage container 30.

If a plurality of obstacles A appears, the surface covered by the obstacle is extended to the top of the projection plane on the projection plane of the screen to set the blocking region, and the plane having the widest plane among the faces divided by the blocking region is selected, The image is reduced to fit the size and projected. That is, the blocking region is formed in the form of a band extending from the lower end to the upper end of the projection plane, and the region excluding the blocking region is divided by the blocking region, so that a region having the largest area among the divided regions is selected and the reduced image is projected .

If the area difference between the widest plane and the second largest plane among the planes divided by the blocking region is smaller than a preset difference, the reduced image is simultaneously projected on the widest plane and the second largest plane. At this time, since the area of the widest plane and the area of the second largest plane may be different, an image reduced in the width direction is projected according to the respective area sizes.

On the other hand, since the article storage box 30 is installed in a place where many people come and go, whenever a person passing in front of the storage box 30 is found, a reduced image is projected by finding a surface not covered by a person, (The variation of the position at which the reduced image is displayed on the projection plane of the screen) or the size thereof is changed according to the movement of the person. Particularly, the size of the wider side of the two sides divided by the obstruction- If the image is reduced in the width direction, the size of the width direction changes momentarily, making it difficult to understand the contents of the advertisement image.

Accordingly, in the embodiment of the present invention, the image controller 12 of the projector 10 of the projection image variant detects the appearance of an obstacle by the obstacle detecting means 14 and also determines whether or not the obstacle is moved when the position is detected, An image is projected as a plane for projecting the entire screen when moving, and the image is projected on a screen not obstructed by an obstacle when the obstacle does not move.

Here, the determination of whether or not the obstacle is moving is determined as if the moving speed of the obstacle is not moving if the moving speed of the obstacle is less than a predetermined speed, and it is determined that the moving speed of the obstacle is moved when the moving speed of the obstacle exceeds a predetermined speed. In other words, if the obstacle is standing in front of the screen, or if it is walking very slowly or pausing and then walking very slowly again, there is no difficulty in viewing the advertisement image even if there is a change in the position and size of the reduced image. So that there is no great difficulty in seeing the predetermined speed.

The manner of determining whether or not the obstacle is moved depends on what constitutes the obstacle detecting means 14 as described above. For example, if the obstacle detecting means 14 is constituted by a camera (or an infrared camera) to extract an obstacle image, it is determined whether or not the obstacle image is moving at a moving speed within the captured image. For example, if the obstacle detecting means 14 is constituted by a plurality of infrared sensors having different sensing directions, an elapsed time for detecting an obstacle in one infrared sensor is compared with a preset threshold value, and if the obstacle sensing means 14 is larger than the threshold value, If it is detected by the infrared sensor adjacent to the threshold value or below the threshold value, it is determined that the obstacle is moved.

When a plurality of obstacles appear, it is determined whether or not the obstacles are moved, and a reduced image is projected on the surface not obstructed by the obstacles determined as stopping.

Even if there are a plurality of obstacles determined as stops, there are a plurality of surfaces arranged in the width direction partitioned by the area covered by the obstacle. Therefore, a surface having the largest area among the divided surfaces is selected, And outputs the image reduced in the direction.

If the size of the image reduced in the width direction is too small, that is, if it is too large for the width direction, it is preferable to stop the image projection and wait until the size of the surface to be projected into the reduced image becomes sufficient. To this end, a threshold value is previously set for the size of a surface to be projected with the reduced image, and the reduced image is projected when the threshold is exceeded.

2 to 4, since the container portion 32 of the container storage box 30 is used as a substitute for the screen, when the article is stored and when the article is to be retrieved, The door part of the locker of any one of the plurality of lockers constituting the door is opened, so that the part of the image projected toward the open door can not be seen completely.

The projected image variable type projector 10 according to the embodiment of the present invention is connected to the control unit 31 for controlling the opening and closing of the locker door of the container unit 32 and the signal line 33 in the container storage 30, Receives the position information of the open door according to the control, and projects the reduced image on the projection plane made up of the closed door that is closed except for the open and close door.

Accordingly, when the hinged door is opened by the control unit 31, the user who uses the trunk door moves to the locker with the hinged door opened to put the trunk in the locker or the user in the locker becomes an obstacle. Do not be obstructed by obstacles.

If the obstacle detection means 14 is installed in the hollow portion 32 used as the screen 20 as described above, the detection signal of the obstacle detected by the obstacle detection means 14 is transmitted through the signal line 33 And the projection image is transmitted to the variable-type projector 10.

As described above, by projecting the advertisement image onto the projection image variable type projector using the article storage box as a screen, the screen may not be prepared separately, or even if a situation occurs where a lot of people come and go and the person uses the article storage box, So that the advertisement effect can be enhanced. In addition, since the position and size of projecting the advertisement image are dynamically changed according to the appearance and movement of the person, interest can be generated and the advertisement effect can be enhanced by catching people's gaze.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, . ≪ / RTI > Accordingly, such modifications are deemed to be within the scope of the present invention, and the scope of the present invention should be determined by the following claims.

10: Projector
11: projection module 12: image controller
13: image source storage unit 14: obstacle detection means
20: Screen
30: storage box 31: control part 32:

Claims (8)

A projector for projecting an image on a screen in a direction in which an image projected on a screen is projected, the projector projecting an image on a projection plane of the screen by varying an image according to a position of an obstacle,
And an obstacle detection means for detecting an appearance position of an obstacle that obscures an image projected toward the screen, wherein the image is projected on a screen that is not obstructed by the obstacle. The method according to claim 1,
The shielding plane is set by extending the plane obscured by the obstacle on the projection plane of the screen to the upper end of the projection plane and the image is projected in the width direction in accordance with the size on the plane having the widest plane among the planes divided by the blocking region. Projection Image Variable Projector. 3. The method of claim 2,
When the difference in area between the widest plane and the second largest plane among the planes divided by the blocking region is smaller than a predetermined difference, the image is reduced and projected simultaneously to the widest plane and the second broad plane, Projecting image variable projector. 3. The method of claim 2,
Wherein the projection of the image in the direction other than the direction in which the reduced image is projected is blocked without changing the range of projection of the image. 3. The method of claim 2,
Wherein the obstacle sensing means is configured to direct a plurality of infrared sensors for sensing a human body to the screen, and to detect the appearance and direction of the human body by installing different sensing directions. The method according to claim 1,
Wherein the obstacle detecting unit detects whether or not the obstacle is moved and projects the image as a plane on which the entire screen is projected when the obstacle moves in an area covering the image projected on the screen, And projecting the image on a screen that is not obstructed by the obstacle. A projection system comprising a projector and a screen,
Wherein a surface of the storage case having a hinged door in front of the partitioned inner spaces is formed as a projection plane of the screen,
Wherein the projector comprises the projection image variable projector according to any one of claims 1 to 6, and projects the advertisement image in the storage container. 8. The method of claim 7,
Wherein the goods storage box includes a control unit for controlling opening and closing of the hinged door,
Wherein the projected image variable type projector receives the position information of the open hinged door from the control unit of the goods storage box and projects the reduced image on the face of the front door with the closed brigade except the open hinged door.

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