JP2006308962A - Stereoimage presentation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stereoimage presentation device capable of controlling and presenting shape change of a stereoimage. <P>SOLUTION: The stereoimage presentation device 1 presents a rotated object to be projected as an object for observation in which a stereoimage appears using a residual image effect while projecting a slit video image as slit light whose shape is changeable and has a changing means 3 for changing the shape of the slit light, a control means 5 for controlling the device 1, a slit shape pattern generation means 6 for generating a slit shape pattern, a slit shape pattern accumulation means 7 which accumulates the slit shape pattern, a rotation means 9 for rotating the object to be projected and an irradiation means 11 for projecting the slit video image. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a stereoscopic image presentation device that presents a stereoscopic image by an afterimage effect.

2. Description of the Related Art Conventionally, a stereoscopic image is presented by a CG by binocular stereoscopic vision, a hologram, a work using a strobe, a work using a slit light, a device that projects an image on a projection object, or the like.
CG based on binocular stereoscopic vision uses stereoscopic vision, and adopts CG so that a change in shape of a stereoscopic image can be expressed in real time by parallax.

A hologram is a three-dimensional image that moves or changes its shape depending on the viewing angle.
A work using a strobe is an object that looks like a moving object due to an animation effect when the rotated object is observed using the instantaneous irradiation emitted by the strobe (for example, Non-Patent Document 1). That is, by supplying high-speed intermittent illumination to the entire projection object by projecting projection light with a strobe light, it can be observed as if movement occurred in the projection object due to the afterimage effect.

For works using slit light, as the slit light, a partial illumination with a part brightened and the other part darkened is projected onto a projecting object that rotates at high speed, and the shape of the object is deformed. It seems to be.
An apparatus that projects an image on a projection object presents a stereoscopic image by projecting the image on a projection object that moves at high speed.
Toshio Iwai “Toshio Iwai's work and surroundings” p46, p47 November 2000

  However, when a stereoscopic image is presented by CG using conventional binocular stereoscopic vision, there are a method of viewing using special glasses (3D glasses) and a method of viewing with the naked eye using a lenticular screen or the like. However, there is a restriction that the visible range is only in front of the display screen, and a stereoscopic image cannot be viewed from the side.

  In addition, in a work using a strobe, only a movement in which a three-dimensional image circulates can be created. If the movement is equivalent to one round of movement, for example, if 30 rounds are taken as one round of movement, 30 bodies The projection object) is required to be placed, and the movement of the stereoscopic image is limited.

  Furthermore, in the works using slit light, slit light that has passed through a linear slit with a small area from the center to the periphery, which is provided at a predetermined interval on a disk-shaped physical slit plate, is used. There is a problem that only two types of stereoscopic images based on two types of shape changes due to the difference in the rotation direction of the plate (forward rotation and reverse rotation) can be presented, and the shape change of the stereoscopic image cannot be controlled.

  Furthermore, in a device that projects an image on a projection target, the presented stereoscopic image becomes a stereoscopic image by time integration of surface information based on the image, and only a semitransparent stereoscopic image can be presented.

  Therefore, an object of the present invention is to provide a stereoscopic image presentation apparatus that can solve the above-described problems and can control and present a change in the shape of a stereoscopic image.

  In order to solve the above-described problem, the stereoscopic image presenting apparatus according to claim 1 is configured such that the projection target passes through the projection space in which the projection light is projected at a predetermined speed or more, and thereby the projection target is generated due to the afterimage effect. A stereoscopic image presentation apparatus that presents a stereoscopic image having a deformed body, and includes a projection object moving unit, a changing unit, and a projecting unit.

  According to such a configuration, the three-dimensional image presenting apparatus moves the projection body so that the projection body moving means passes the projection space at a predetermined speed or higher. For example, the projecting body moving means moves the projection space so that the projection body passes, or makes a revolving motion (circulation motion) or a reciprocating motion so as to repeatedly pass through the projection space, Rotate the projectile. Note that the predetermined speed or higher is a speed at which the user (observer) of the apparatus can observe a certain three-dimensional image by moving the projection target. However, it is difficult to uniformly specify the speed at which a stereoscopic image can be observed (the number of passes per unit time) based on a difference (individual difference) in the dynamic visual acuity of each individual user. In the embodiment described below, 20 Hz is adopted, but the present invention is not limited to this, and the predetermined speed may be determined with reference to the result of a subjective evaluation experiment. Subsequently, the stereoscopic presentation device changes the shape of the projection light by the changing unit, and the projection light whose shape has been changed by the changing unit by the projecting unit per unit time of the projection target by the projection target moving unit. Projects a number of times that has a predetermined relationship with the number of passes.

  The stereoscopic image presenting apparatus according to claim 2, wherein a three-dimensional image presenting a rotated projection object as an observation object on which a stereoscopic image appears using an afterimage effect while projecting a slit image as slit light whose shape can be changed. The image presentation apparatus is configured to include a rotation unit, a change unit, and an irradiation unit.

  According to this configuration, the stereoscopic image presenting apparatus places and rotates the projection target by the rotating unit. Subsequently, the stereoscopic image presenting apparatus changes the slit shape pattern constituting the slit light in the slit video by the changing unit. That is, the slit shape pattern is changed by operating the changing means by the user of the apparatus. For example, some slit shape patterns may be prepared in advance and the user may select them, or a curve drawn as the user thinks with a mouse or pen input means may be used as the slit shape pattern. That is, the slit shape pattern is freely changed according to the operation by the changing means.

  Then, the stereoscopic image presenting apparatus projects the slit image in which the slit shape pattern is changed according to the operation by the changing unit by the irradiating unit, the number of times having a predetermined relationship with the number of rotations per unit time of the projection target by the rotating unit. . The number of times having a predetermined relationship with the number of rotations per unit time refers to the number of times that the user of the apparatus is not recognized as a blinking state when observing the projection object (observation target). For example, when the projecting object is rotated at a high speed of 1200 rpm, the user of the apparatus blinks the projecting object by projecting the slit image onto the projecting object so as to traverse 20 times per second (20 Hz). Not recognized.

  The stereoscopic image presenting apparatus according to claim 3, wherein a three-dimensional image presenting a rotated projection object as an observation target on which a stereoscopic image appears using an afterimage effect while projecting a slit image as slit light whose shape can be changed. The image presenting apparatus includes a rotating unit, a changing unit, an irradiating unit, and a slit image reflecting unit.

  According to such a configuration, the stereoscopic image presenting apparatus places and rotates the projection target by the rotating unit, and changes the slit shape pattern by the changing unit. And a stereoscopic image presentation apparatus projects the slit image | video by which the slit shape pattern was changed by the irradiation means according to operation by the change means. Then, the stereoscopic image presenting apparatus reflects the slit image projected by the irradiating means by the slit image reflecting means, and the number of rotations per unit time of the projection object by the rotating means becomes a predetermined number of rotations. The projected slit image is reflected while rotating as described above. That is, when the slit image reflecting means rotates, the projected slit image is reflected by the projection object, and the rotation number of the projection object per unit time by the rotating means and the rotation number of the slit image reflection means Are in a predetermined relationship, for example, when the projection object is rotated at 1200 rpm, the slit image reflecting means is constituted by a dodecahedron, and when rotated at 100 rpm, it traverses 20 times per second (20 Hz). Thus, the slit image is projected onto the projection body, and the user of the apparatus does not recognize the projection body as a blinking state.

  The stereoscopic image presenting device according to claim 4 is the stereoscopic image presenting device according to claim 2 or 3, further comprising slit shape changing means for expanding, contracting, deforming, or rotating the slit shape pattern. To do.

  According to this configuration, the stereoscopic image presenting apparatus changes the slit shape pattern by the slit shape changing means. Then, the slit light appears to expand and contract or fluctuate. In addition, when the slit light fluctuates, by moving the slit continuously in a predetermined direction, for example, when the slit shape pattern (the shape of the portion that becomes the slit light) is a single straight line, The straight line is continuously moved from left to right or from right to left on the plane so that the slit light repeatedly performs a predetermined movement.

  The stereoscopic image presenting device according to claim 5 is the stereoscopic image presenting device according to any one of claims 2 to 4, wherein the region of the slit shape pattern is white and the other region is black. The slit image is constructed.

  According to this configuration, the stereoscopic image presenting apparatus, for the slit image, has a slit-shaped pattern area (area through which light is transmitted), that is, a portion constituting the slit light is a white image, and other areas (light is blocked). By making the area) a black image, the shape of the slit light can be freely changed.

  The stereoscopic image presenting device according to claim 6 is the stereoscopic image presenting device according to any one of claims 1 to 5, wherein the center of rotation by the rotating means is the center of the projection object. The shape of the projection object is point-symmetric.

  According to such a configuration, since the stereoscopic image presenting apparatus uses a projection object having a point-symmetric shape, when the rotational speed by the rotating means is a, it rotates at 2a (twice the rotational speed). Equivalent effect is obtained. That is, it becomes possible to reduce the number of rotations of the projection object by the rotation means in half, and to reduce loads such as centrifugal force and air resistance applied to the projection object. Similarly, if the shape of the projection object is divided into three parts with the rotation center as an axis, the number of rotations is reduced to 1/3, and if the shape is divided into four parts, the number of rotations is set to 1/4. It is possible. In this case, the object to be projected is not configured as a single object, but two, three, or four objects having the same shape are placed at the same distance from the rotation center and in the same direction. Similar effects can be obtained.

  According to the first aspect of the present invention, the projection light that moves the projection body so as to pass through the projection space at a predetermined speed or higher and the shape of the projection light can be changed with the number of times the projection body passes per unit time. By projecting a predetermined number of times, it is possible to control and present a change in the shape of the stereoscopic image that is visually recognized by the afterimage effect.

  According to the second aspect of the present invention, the slit image including the slit light whose shape is freely changed on the rotated projection object has a predetermined relationship with the rotation number per unit time of the projection object. Since it is projected a number of times, it is possible to control and present a change in the shape of the stereoscopic image that is visually recognized by the afterimage effect from any angle so as to surround the projection object without requiring special glasses.

  According to the third aspect of the present invention, the slit image including the slit light whose shape is freely changed is reflected so that the number of rotations has a predetermined relationship with the number of rotations per unit time of the projection target. Since the reflected slit image is projected onto the rotated projection object, a stereoscopic image that is visually recognized by the afterimage effect from a desired angle so as to surround the projection object without requiring special glasses. It is possible to control and present the shape change of

  According to the fourth aspect of the invention, by changing the slit shape pattern, the shape of the stereoscopic image visually recognized by the afterimage effect can be changed variously.

  According to the fifth aspect of the present invention, the slit-shaped pattern region, that is, the region through which light is transmitted, is a white image, and the other region, that is, the region that blocks light is freely displayed as a black image. The shape of the slit light can be changed. Note that, in addition to white, it is possible to present area division by color and multiple images having different shapes.

  According to the invention described in claim 6, by using the projecting object having a point-symmetric shape, the number of rotations of the projecting object by the rotating means can be reduced to half, and the projecting object is applied. Loads such as centrifugal force and air resistance can be reduced.

Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
<Outline of stereoscopic image presentation device>
FIG. 1 is an external view (partially see through) of the stereoscopic image presentation apparatus. As shown in FIG. 1, the stereoscopic image presenting apparatus 1 is housed in a casing, and a projection object onto which a slit image including slit light is projected, that is, a stereoscopic image (variable stereoscopic image) that emerges due to an afterimage effect. The observation object appears on the mounting table in the tempered glass.

  In addition, the stereoscopic image presenting apparatus 1 is provided with an operation touch panel fitted in a housing. Furthermore, a DMD (Dynamic Mirror Drive) projector that projects a slit image including slit light and a polygon mirror that reflects the slit image projected from the DMD projector are housed in the upper part of the housing of the stereoscopic image presentation apparatus 1. It has been.

  Furthermore, in the lower part of the case of the stereoscopic image presentation device 1, a rotary motor that rotates a mounting table on which a projection object (observation target) is mounted and a touch panel (touch panel surface) are touched (pressed down). The PC (personal computer) for controlling these (DMD projector, polygon mirror, rotary motor) is stored based on the result obtained.

<Configuration of stereoscopic image presentation device>
A block diagram of the stereoscopic image presenting apparatus 1 shown here is shown in FIG. As shown in FIG. 2, the stereoscopic image presenting apparatus 1 presents a stereoscopic image using an afterimage effect by projecting a slit image including slit light onto a rotated projection object. A control means 5, a slit shape pattern generation means 6, a slit shape pattern storage means 7, a rotation means (projecting body moving means) 9, an irradiation means (projection means) 11, and a slit image reflection means 13. It has.

  The changing means 3 is used to operate the stereoscopic image presenting apparatus 1 and here is constituted by a touch panel. When the user of the device 1 touches a predetermined location on the touch panel surface of the changing unit 3, one of the display buttons displayed below the touch panel surface is pressed, and a control signal corresponding to the display button is generated. It is output to the control means 5. The changing unit 3 corresponds to the operation touch panel shown in FIG.

  The control signal output from the changing unit 3 to the control unit 5 includes a rotation control signal for controlling either the rotation direction or the number of rotations of the rotation unit 9 and the slit image reflection unit 13 and the slit irradiated from the irradiation unit 11. There is a light quantity of the image, and a slit control signal for controlling either the generation or reading (selection) of the slit shape pattern constituting the slit light and the change of the slit shape pattern in the slit image.

  Based on the control signal (rotation control signal, slit control signal) input from the changing means 3, the control means 5 is based on the slit shape pattern generating means 6, the slit shape pattern accumulating means 7, the rotating means 9, and the irradiating means. 11 and the slit image reflection means 13, and includes a rotation speed control means 51 and a slit light control means 52. The control means 5 corresponds to the PC shown in FIG.

  Based on the control signal (rotation control signal) input from the changing unit 3, the rotation number control unit 51 includes a projection object rotated by the rotating unit 9 and a slit image reflected by the slit image reflecting unit 13. The number of rotations of the rotating means 9 and the slit image reflecting means 13 is controlled so as to be synchronized. For example, the rotation number control unit 51 controls the rotation number of the projection target by the rotation unit 9 to 600 rpm, and controls the rotation number of the slit image reflection unit 13 to 100 rpm. The rotational speed of the rotating means 9 is 1200 rpm in order to synchronize with the slit image (details will be described later). However, in order to make the shape of the projection object point-symmetric, The number of revolutions can be reduced by half and is controlled at 600 rpm.

  The slit light control means 52 controls the slit image (slit light shape) projected on the slit image reflecting means 13 by the irradiation means 11 based on the control signal (slit control signal) input from the changing means 3. The slit shape pattern switching means 52a and the slit shape changing means 52b are provided.

  The slit shape pattern switching means 52a reads the slit shape pattern stored in the slit shape pattern storage means 7 based on the control signal (slit control signal: selected slit shape pattern) input from the changing means 3. Thus, the slit image including the slit shape pattern is output to the irradiation unit 11 and the slit shape pattern is switched.

  The slit shape changing means 52b expands / contracts the slit image projected from the irradiation means 11 to the slit image reflecting means 13 based on the control signal (slit control signal: changing the slit shape pattern) input from the changing means 3. The slit shape is changed so as to deform or rotate (so that the slit image fluctuates).

  The slit shape pattern generation means 6 generates a slit shape pattern as CG (computer graphics) according to the slit light control means 52 and outputs a slit image including the generated slit shape pattern to the irradiation means 11.

  The slit shape pattern accumulating means 7 accumulates slit shape patterns indicating various shapes constituting the slit light as slit images (input images) to be output to the irradiating means 11, and is recorded on a general hard disk or the like. It is composed of media. That is, when output to the irradiation unit 11, the slit shape pattern stored in the slit shape pattern storage unit 7 becomes a white image in the slit image, and the other region in the slit image is a black image. It becomes.

  The rotating means 9 is composed of a mounting table on which an object that is a projection object (observation target) is mounted, and a rotation motor that rotates the mounting table at high speed. The rotation motor of the rotation unit 9 can increase or decrease the rotation number according to the control by the rotation number control unit 51 of the control unit 5. Here, the rotary motor of the rotating means 9 can output a positive or negative rotational speed of 1200 rpm.

  The irradiating unit 11 projects a slit image including the slit pattern (slit light) output from the slit light control unit 52 to the slit image reflecting unit 13 under the control of the slit light control unit 52. . The irradiating unit 11 changes the slit shape pattern based on the control of the slit shape changing unit 52b of the slit light control unit 52, and projects the slit image in which the slit light is changed onto the slit image reflecting unit 13. It is. This irradiation means 11 corresponds to the DMD projector shown in FIG.

  The slit image reflecting means 13 includes a reflecting mirror surface composed of a plurality of surfaces and a rotating mechanism for rotating the reflecting mirror surface. According to the control by the rotational speed control means 51 of the control means 5, the reflecting mirror surface is moved by the rotating mechanism. While rotating, the slit image projected from the irradiation means 11 is reflected, and the slit image projected onto the projection target is reflected. The slit image reflecting means 13 corresponds to the polygon mirror shown in FIG.

  Here, the slit image reflecting means 13 has twelve reflecting mirror surfaces, and these twelve reflecting mirror surfaces are formed to form the side surfaces of the columnar body. And as a rotation mechanism, the rotating shaft which penetrates the center of the upper surface and lower surface of a columnar body, and the drive part which rotationally drives this rotating shaft are provided, and the rotating shaft and the columnar body are integrated. By rotating this rotating shaft, the columnar body also rotates, and the reflecting mirror surface forming the side surface of the columnar body moves. That is, here, when the slit image reflecting means 13 makes one rotation, the projection object can be scanned (runs horizontally) 12 times by the reflected slit image. In this case, when the number of rotations of the slit image reflecting means 13 is 100 rpm, the number of times of lateral running per second (number of times of traversing the projection target) is 20, that is, 20 Hz.

  Even if the stereoscopic image presenting apparatus 1 does not include the slit image reflecting means 13, the number of times the irradiation means 11 has a predetermined relationship with the number of rotations of the projection object (the number of rotations per unit time) by the rotating means 11. Only if the slit light can be projected onto the projection object at a high speed, a stereoscopic image (variable stereoscopic image) can be displayed by the afterimage effect.

  According to the stereoscopic image presenting apparatus 1, a slit image including slit light whose shape is freely changed by the irradiating unit 11 on the projection target rotated by the rotating unit 9 is displayed per unit time of the projected unit. Since it is projected a number of times that has a predetermined relationship with the number of rotations, the shape change of the stereoscopic image that is visually recognized by the afterimage effect can be controlled from a desired angle so as to surround the projection object without requiring special glasses. Can be presented.

  Moreover, according to this stereoscopic image presentation apparatus 1, the slit image including the slit light whose shape is freely changed and projected by the irradiation unit 11 is reflected by the slit image reflection unit 13, and the unit time of the projection object Since the reflected slit image is projected onto the rotated projection object so that the rotation number has a predetermined relationship with the number of rotations per hit, the projection object is not required without requiring special glasses. It is possible to control and present a change in the shape of the stereoscopic image that is visually recognized by the afterimage effect from a desired angle so as to surround the image.

  Furthermore, according to the stereoscopic image presenting apparatus 1, the slit shape changing means 52b changes the slit shape pattern, for example, changing the slit shape pattern so that the slit light fluctuates, so that a stereoscopic image that emerges due to the afterimage effect is generated. The shape of can be changed variously.

  Furthermore, according to the stereoscopic image presenting apparatus 1, the slit image stored in the slit shape pattern storage unit 7 is read by the slit light control unit 52 of the control unit 5 and is output to the irradiation unit 11. In this slit image, the area of the slit pattern (area through which light passes) is composed of a white image, and the other area (area where light is blocked) is composed of a black image, so that The shape can be changed.

  In addition, according to the stereoscopic image presenting apparatus 1, the number of rotations of the projection object by the rotation unit 9 can be reduced to ½ by using the projection object having a point-symmetric shape.

<Operation of stereoscopic image presentation device>
Next, the operation of the stereoscopic image presenting apparatus 1 will be described with reference to the flowchart shown in FIG. 3 (see FIG. 2 as appropriate).
First, the stereoscopic image presenting apparatus 1 rotates the projection target (observation target) at high speed by the rotating unit 9 (step S1). Subsequently, the stereoscopic image presenting apparatus 1 projects a slit image as slit light onto the slit image reflecting means 13 by the irradiating means 11 and projects the slit image reflected by the slit image reflecting means 13 onto the projection target ( Step S2).

  Then, the stereoscopic image presenting apparatus 1 determines whether or not the control means 5 has changed the rotation speed of the projection target (the rotation speed of the rotation motor of the rotation means 9) to the changing means 3 (step S3). When it is determined that there is an operation (step S3, Yes), the rotational speed is changed by the rotational speed control means 51 (step S4). In addition, the stereoscopic image presenting apparatus 1 does not determine that the control unit 5 has changed the changing unit 3 to change the rotation speed of the projection target (the rotation speed of the rotary motor of the rotating unit 9) (step S3). , No), the process proceeds to step S5.

  In addition, the stereoscopic image presenting apparatus 1 determines whether or not the control unit 5 has changed the slit shape pattern (switching of the slit shape pattern of the irradiation unit 11) to the change unit 3 (Step S5). If it is determined that there is a difference (step S5, Yes), the slit shape pattern switching means 52a changes the slit shape pattern (step S6). The stereoscopic image presenting apparatus 1 does not determine that the control unit 5 has changed the slit shape pattern (switching the slit shape pattern of the irradiation unit 11) to the changing unit 3 (No in step S5). In step S7, the process proceeds to step S7.

  Furthermore, the stereoscopic image presenting apparatus 1 determines whether or not the control unit 5 has performed an operation for causing the changing unit 3 to change the slit shape (change of the slit shape of the irradiation unit 11), for example, an operation for adding fluctuation. If it is determined that there is an operation (step S7, Yes), the slit shape changing means 52b changes the slit shape (adds fluctuation) (step S8). Further, the stereoscopic image presenting apparatus 1 did not determine that there was an operation for causing the changing unit 3 to change the slit shape (change of the slit shape of the irradiation unit 11), for example, an operation for adding fluctuations, by the control unit 5. In the case (step S7, No), the process proceeds to step S9.

  Furthermore, the stereoscopic image presenting apparatus 1 determines whether or not the control unit 5 has performed an operation for causing the change unit 3 to cancel the change in the slit shape (change in the slit shape of the irradiation unit 11), for example, an operation to cancel the fluctuation. If it is determined (step S9) and it is determined that there has been an operation (step S9, Yes), the slit shape changing means 52b restores the slit shape to the original (releases the fluctuation) (step S10). Further, the stereoscopic image presenting apparatus 1 does not determine that the control unit 5 has operated the changing unit 3 to cancel the change in the slit shape (change in the slit shape of the irradiation unit 11), for example, the operation to cancel the fluctuation. If (step S7, No), the process proceeds to step S11.

  Then, the stereoscopic image presenting apparatus 1 determines whether or not the control unit 5 has operated the changing unit 3 to end the operation (step S11), and determines that there has been an operation (step S11, Yes). Then, the rotating means 9, the irradiating means 11 and the slit image reflecting means 13 are stopped (step S12). If the control unit 5 does not determine that the control unit 5 has performed an operation to end the operation (No in step S11), the stereoscopic image presenting apparatus 1 returns to step S3 and continues the operation.

  Note that Step S3 and Step S4, Step S5 and Step S6, Step S7, Step S8, Step S9, and Step S10 shown in this flowchart are operations that can occur regardless of the order.

<Example of stereoscopic image generation by stereoscopic image presentation device, example of slit shape pattern, example of slit shape and stereoscopic image, example of fluctuation>
Next, an example of a stereoscopic image, an example of a slit shape pattern, an example of a slit shape and a stereoscopic image, and an example of fluctuation by the stereoscopic image presentation device 1 will be described with reference to FIGS. reference).
FIG. 4 is a diagram schematically illustrating an example of generating a stereoscopic image when a house model is used as the projection target. FIG. 4 (1) shows a state before the projection object is rotated by the rotating means 9, that is, in a stopped state. FIG. 4B shows a state in which the projection target is rotated by the rotating means 9 at a high speed (for example, 600 rpm).

  FIG. 4 (3) shows a state in which the slit image including straight slit light (the slit is linear) is scanned at high speed by the irradiation unit 11 and the slit image reflecting unit 13 in synchronization with the rotation of the projection target. In this case, the projected object appears to be stationary in a bent state. FIG. 4 (4) shows a state in which a slit image including refracted slit light (a linear shape in which the slit is refracted) is scanned at high speed while being synchronized with the rotation of the projection object by the irradiation unit 11 and the slit image reflecting unit 13. In this case, the projection object also appears to be stationary in a bent state in accordance with the shape of the slit light.

  As shown in FIG. 4, in the stereoscopic image presentation device 1, the slit shape pattern input as a part of the slit image to the irradiation unit 11 is changed from a linear shape to a refracted linear shape, It is possible to change the shape of the stereoscopic image that appears due to the afterimage effect, that is, to present a variable stereoscopic image.

FIG. 5 is a diagram showing an example of a slit shape pattern displayed on the changing means 3 (here, the operation touch panel) and a selection button for changing slit light (slit video) by the slit shape changing means 52b. .
As shown in FIG. 5, the changing means 3 can select 16 types of slit-shaped patterns set in advance. And the slit shape pattern can be selected because the user of the said apparatus 1 contacts the applicable location of the operation touch panel (change means 3).

  Also, “FREEZE” and “Swing” are prepared as selection buttons for changing the slit light (slit image). “FREEZE” is a selection button for returning the changed slit light (fluctuated slit light). In addition, “Swing” allows the slit shape changing means 52b to function, and for example, the slit shape is rotated to the right or left with the center line (indicated by a dotted line) of the irradiation surface as the rotation axis. This is a selection button for changing the shape (so that the slit light fluctuates).

  FIG. 6 is a diagram illustrating a correspondence relationship between the slit shape and the three-dimensional image. 6A shows a case where the slit shape is a straight line, FIG. 6B shows a case where the slit shape is refracted like lightning, and FIG. 6C shows that the slit shape is dispersed on the straight line. The three-dimensional image presented in the case of the set of

  In FIG. 6, the state of the stereoscopic image in the case where the rotational speed of the rotating means 9 is about 600 rpm and the rotational speed of the slit image reflecting means 13 (which has 12 reflecting mirror surfaces here) is 100 rpm. (State) is shown. Here, the rotational speed of the rotating means 9 is set to “about” 600 rpm. The object to be projected (observed object) rotates slowly by intentionally rotating the rotating means 9 slightly faster than 600 rpm. This is to show the user of the apparatus 1 as described above.

  Incidentally, the rotational speed of the rotating means 9 and the rotational speed of the slit image reflecting means 13 are completely synchronized, that is, an integer multiple of the rotational speed of the rotating means 9 is set to an apparent rotational speed (reflecting mirror surface) of the slit image reflecting means 13. Number × actual rotational speed (here, 12 × 100)), the projection object appears to be stationary. In this case, the observed stereoscopic image is dynamically changed only by the change (movement) of the slit light.

  In FIG. 6, a simplified human model is arranged around the house model for comparison with the house model rotated by the rotating means 9 as the projection target. In other words, if the house model is rotated, the appearance will change accordingly, but the human model will not change.

In the case of FIG. 6A, since the slit shape is a straight line, the three-dimensional image appears to swell under the influence of distortion caused by the rotation of the rotating means 9 and the slit image reflecting means 13.
In the case of FIG. 6B, since the slit shape is refracted like lightning, the stereoscopic image also appears to be refracted.
In the case of FIG. 6C, since the slit shape is a set of points dispersed on a straight line, the three-dimensional image also looks like a lot of messy short lines.

  FIG. 7 shows the transition of the three-dimensional image when the “SWING” selection button is pressed when the slit shape is a straight line. As shown in FIGS. 7 (a), 7 (b) and 7 (c), the stereoscopic image appears to be standing in the vertical direction. In particular, the ladder part of the house model, which is the projectile, appears to wave up and down.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment. For example, in the present embodiment, the stereoscopic image presenting apparatus 1 rotates the projection object by the rotating unit 9 and rotates the slit image reflecting unit 13 to reflect the slit light on the reflecting mirror surface. 11. By using a device capable of high-speed control, such as a DMD projector, it becomes possible to generate a slit image that traverses the projection object without rotating the reflecting mirror surface of the projection light, and uses the afterimage effect. It is possible to generate a stereoscopic image (variable stereoscopic image).

  In the three-dimensional image presentation device 1, the slit image reflection means 13 projects the slit light horizontally (scanning in the horizontal direction), but it may also be vertical (scanning in the vertical direction).

  Furthermore, in this embodiment, although the three-dimensional image presentation apparatus 1 which rotates a to-be-projected body by the rotation means 9 was demonstrated, for example, the same to-be-projected body is prepared severally and this several to-be-projected body is made into a belt conveyer (to-be-received It is also possible to present a three-dimensional image in which the shape of the projection body is changed by placing the projection body on the projection body moving means) and translating the projection body at a speed equal to or higher than a predetermined speed.

  Alternatively, the stereoscopic image presenting apparatus 1 is made larger, and a moving means for moving the user is prepared, and the front of the plurality of projection bodies in which the projection bodies are arranged at predetermined intervals is used. It is also possible to recognize a deformed shape by the person and the projection light moving at high speed. For example, the moving means may be a moving body such as a train. And in this case, for example, a projection object is installed on the wall surface in the tunnel through which the train passes, and the irradiation means is applied to the side part of the train or the train so as to project on the projection object installed on the wall surface. By providing, it is possible to observe the deformed shape of the projection object installed on the wall surface.

In addition, as an industrial application (various usage methods) of the stereoscopic image presentation apparatus 1, the following five examples (1) to (5) are given.
(1) When the stereoscopic image presentation device 1 is used, an enlarged display is possible when an object that is a projection object is displayed as a stereoscopic image.
(2) The object (three-dimensional object, for example, a model such as a building) is developed using the three-dimensional image presentation device 1, and the positional relationship between the surfaces constituting the object is presented. That is, using a model such as a building as a projection object, it is possible to simultaneously present four surfaces (four surfaces) of the model, that is, surfaces that cannot be viewed at the same time.

  (3) The stereoscopic image presenting apparatus 1 allows the projection target to rotate at high speed, so that the barcode-like pattern attached (drawn) to the surface of the projection target can be observed as a pattern. The case (3) will be described in more detail by taking a document watermark as an example. In the case of the watermark of a document, a document printed with a barcode pattern or a pattern of random spots (pattern obtained by encrypting certain information) is pasted on a cylindrical tube. Then, when the slit light by the slit shape pattern is projected onto the pattern while rotating the cylindrical tube, the slit light serves as a key for decrypting the pattern, and the encrypted information (pattern ) Can be shown correctly.

  In this case, depending on the difference in the shape of the slit light by different slit shape patterns and the difference in the relative speed difference between the rotating cylinder and the slit light to be projected, the case where the pattern can be decoded and the case where it cannot be performed occur. The confidentiality of the information to be encrypted is improved. That is, when a barcode pattern or a pattern consisting of random spots is regarded as a kind of encryption, the encryption is not easily broken.

  By printing such a barcode-like pattern or a pattern consisting of random spots with a pigment that cannot be seen with normal light, that is, a pigment that can be seen only at a specific wavelength of slit light, If the image presentation device 1 is not used, there is an advantage that it is difficult to copy the pattern because it is not noticed that the pattern is attached to the cylindrical tube.

  As described above, when the stereoscopic image presentation device 1 is used, the cylindrical tube is replaced with a projection object, and a barcode pattern or a pattern including random spots is attached to the projection object. Good. In addition, when attaching a barcode pattern to the projection object, even if the pattern is attached to an uneven surface of the projection object that cannot be read by a normal reader (barcode reader), the stereoscopic image If the presentation apparatus 1 is used, it can be read (can be presented as a stereoscopic image).

  (4) By moving the bar-shaped member such as a metal bar at high speed and changing the shape of the illumination light (slit light by the irradiation means 11) by the stereoscopic image presentation device 1, the bar-shaped member is waved like a sine wave. Looks like you are hitting. As a result, the wave motion can be presented in three dimensions, and by adjusting the moving speed and the number of slit light irradiations per unit time (number of times of projection), this wave motion can be reproduced in slow motion. The stereoscopic image presentation device 1 can be used as a kind of educational material when explaining a physical phenomenon.

  (5) When the industrial product is in the design stage by moving the industrial product at high speed by the stereoscopic image presentation device 1 and changing the shape of the illumination light (slit light by the irradiation means 11), It can be used for shape change simulations and experiments, or a part of the industrial product can be emphasized or deformed.

  In addition, when the industrial product is displayed in the showcase using the stereoscopic image presentation device 1, the shape is deformed by rotating the industrial product as a single item at a high speed, or a plurality of industrial products are prepared. In addition, by moving these industrial products in a circular motion, they can be presented as if they were moving (as if they were dancing). As a result, the industrial products displayed in the showcase can attract the attention of the audience, and the stereoscopic image presentation device 1 can be used as a device for advertising industrial products.

1 is an external view (partially see through) of a stereoscopic image presentation apparatus according to an embodiment of the present invention. It is a block diagram of the stereoscopic image presentation apparatus (corresponding to FIG. 1) according to the embodiment of the present invention. It is a flowchart explaining operation | movement of the three-dimensional image presentation apparatus shown in FIG. It is the figure which showed typically the example of the production | generation of the three-dimensional image at the time of using a house model as a to-be-projected body. It is the figure which showed the example of the slit shape pattern. It is the figure which showed the example of the correspondence of a slit shape and a three-dimensional image. It is the figure which showed the transition of the three-dimensional image at the time of making a slit shape change means function.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stereoscopic image presentation apparatus 3 Change means 5 Control means 51 Rotation speed control means 52 Slit light control means 52a Slit shape pattern switching means 52b Slit shape change means 6 Slit shape pattern generation means 7 Slit shape pattern storage means 9 Rotation means (projection) Body movement means)
11 Irradiation means (projection means)
13 Slit image reflection means

Claims (6)

A three-dimensional image presentation device that presents a three-dimensional image of a deformed shape of the projection object by an afterimage effect by passing the projection object at a predetermined speed or more through the projection space in which the projection light is projected,
A projected object moving means for moving the projected object so as to pass through the projection space at a predetermined speed or higher;
Changing means for changing the shape of the projection light;
Projection means for projecting the projection light whose shape has been changed by the change means, a number of times having a predetermined relationship with the number of times the projection target passes by the projection target moving means per unit time;
A stereoscopic image presentation apparatus comprising: A three-dimensional image presentation device that presents a rotated projection object as an observation target in which a three-dimensional image using an afterimage effect appears while projecting a slit image as slit light whose shape can be changed,
Rotating means for placing and rotating the projection object;
In the slit image, changing means for changing the slit shape pattern constituting the slit light;
Irradiation means for projecting a slit image in which the slit shape pattern is changed according to the operation by the changing means, and projecting the number of rotations per unit time of the projection object by the rotating means a predetermined number of times,
A stereoscopic image presentation apparatus comprising: A three-dimensional image presentation device that presents a rotated projection object as an observation target in which a three-dimensional image using an afterimage effect appears while projecting a slit image as slit light whose shape can be changed,
Rotating means for placing and rotating the projection object;
In the slit image, changing means for changing the slit shape pattern constituting the slit light;
Irradiation means for projecting a slit image in which the slit shape pattern is changed according to the operation by the changing means,
A slit image reflecting means that reflects while rotating the slit image projected by the irradiating means so as to have a rotation number having a predetermined relationship with the rotation number per unit time of the projection object by the rotation unit,
A stereoscopic image presentation apparatus comprising:   The stereoscopic image presenting apparatus according to claim 2, further comprising slit shape changing means for expanding, contracting, deforming, or rotating the slit shape pattern.   5. The stereoscopic image presentation apparatus according to claim 2, wherein in the slit image, the slit-shaped pattern region is configured to be white and the other region is configured to be black. 6.   The three-dimensional object according to any one of claims 2 to 5, wherein the projection object has a point-symmetric shape in which a center of rotation by the rotation unit is a center of the projection object. Image presentation device.

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