JP2016161882A - Light projection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light projection device that allows the same light projection device to effectively project both of video light and illumination light.SOLUTION: A light projection device comprises: a first image data creation unit 11; a second image data creation unit 12; an image drawing unit 15; an image selection unit 13; an image change-over unit 14; a light projection unit 20 that projects a first image or second image; an illumination parameter input unit 18; and a parameter conversion unit 17 that converts an illumination parameter input to the illumination parameter input unit 18 into respective gradation values of R, G and B. The image change-over unit 14 is configured to change over the first image and the second image to be projected from the light projection unit 20 depending upon whether an observer exists in a prescribed range from an exhibition object.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an optical projection apparatus that projects an arbitrary image or illumination light onto an area including an object to be displayed.

  2. Description of the Related Art Conventionally, there is an illumination system that performs a space effect by using a projector, which is a projection device, instead of a lighting fixture (light). The lighting fixture used in this lighting system is also called a moving projector. The moving projector emits image light as projection light. For this reason, in the illumination system described above, the projection and illumination of the video are switched by freely changing the shape and color of the projection light (see, for example, Patent Document 1).

International Publication No. 2010/058381

  The illumination system disclosed in Patent Literature 1 projects a first image as video light for information presentation and a second image that simulates illumination light. In the illumination system described above, an information presentation area (screen or the like) that irradiates the first image and an exhibition object (exhibit such as a product) that irradiates the second image are set in advance. The first image is irradiated on the information presentation area, and the second image is irradiated on the display target area.

  In the illumination system described above, the projection area of the information presentation area and the display target area is distinguished, so that when the first image and the second image are irradiated to different display areas, the shape of the image is distorted or desired This causes a problem that the color is not displayed. For example, when the first image is irradiated on the display target area, a part of the first image is projected on the display target. Therefore, the first image projected on the display target is distorted in shape or desired. There is a problem that colors are not displayed. Further, when the second image is irradiated on the information presentation area without being irradiated on the display target area, there is a problem that the display target becomes inconspicuous.

  Therefore, in view of the above problems, an object of the present invention is to provide a light projection device that can effectively project both image light and illumination light with the same light projection device.

  In order to achieve the above object, an aspect of an optical projection apparatus according to the present invention includes a first image that includes arbitrary information and that is an image that is adjusted by R, G, and B gradation values. A first image data generation unit that generates one image data, and generates second image data that constitutes a second image that includes information for illumination and is adjusted by illumination parameters including brightness and color temperature The second image data generation unit, the first image data generated by the first image data generation unit, and the second image data generated by the second image data generation unit, respectively, An image drawing unit that draws as one image and the second image, an image selection unit that arbitrarily selects the first image data and the second image data, and the image drawing unit according to a selection result of the image selection unit Is drawn An image switching unit that switches between the first image and the second image, a light projection unit that projects the first image or the second image drawn by the image drawing unit, and an illumination parameter that inputs the illumination parameter An input unit; and a parameter conversion unit that converts the illumination parameter input to the illumination parameter input unit into gradation values of R, G, and B, and transmits the gradation values to the second image data generation unit, The image switching unit switches between the first image and the second image projected from the light projection unit depending on whether or not an observer exists within a predetermined range from the display object.

  According to the present invention, it is possible to provide an optical projection apparatus that can effectively project both image light and illumination light with the same optical projection apparatus.

1 is a block diagram showing a configuration of an optical projection apparatus according to a first embodiment. FIG. 6 is a perspective view showing an operation example of the optical projection apparatus according to the first embodiment. FIG. 6 is a perspective view showing an operation example of the optical projection apparatus according to the first embodiment. The perspective view which shows an example in the case of switching image light and illumination light in the optical projection apparatus concerning Embodiment 1. FIG. The perspective view which shows the other example in the case of switching image light and illumination light in the optical projector concerning Embodiment 1. FIG. FIG. 3 is a block diagram showing a configuration of an optical projection apparatus according to a modification of the first embodiment. FIG. 6 is a block diagram showing a configuration of an optical projection apparatus according to a second embodiment. The perspective view which shows an example in the case of switching image light and illumination light in the optical projector concerning Embodiment 2. FIG. FIG. 4 is a block diagram showing a configuration of an optical projection apparatus according to a third embodiment. FIG. 10 is a diagram illustrating an example of shape correction processing of the light projection device according to the third embodiment; FIG. 10 is a diagram illustrating an example of shape correction processing of the light projection device according to the third embodiment; FIG. 10 is a diagram illustrating an example of shape correction processing of the light projection device according to the third embodiment; FIG. 10 is a diagram illustrating an example of shape correction processing of the light projection device according to the third embodiment; FIG. 10 is a diagram illustrating an example of shape correction processing of the light projection device according to the third embodiment; FIG. 10 is a diagram illustrating an example of shape correction processing of the light projection device according to the third embodiment; FIG. 6 is a block diagram showing a configuration of an optical projection apparatus according to a fourth embodiment. FIG. 7 is a block diagram showing a configuration of an optical projection apparatus according to a fifth embodiment. FIG. 7 is a block diagram showing a configuration of an optical projection apparatus according to a sixth embodiment. FIG. 7 is a block diagram showing a configuration of an optical projection apparatus according to a seventh embodiment. FIG. 9 is a block diagram showing a configuration of an optical projection apparatus according to an eighth embodiment.

  One aspect of the light projection device according to the present embodiment generates first image data that includes arbitrary information and forms a first image that is an image adjusted with each of the R, G, and B tone values. A second image data for generating a second image data that constitutes a second image that is an image that includes lighting information and is adjusted by an illumination parameter that includes brightness and color temperature; The first image data generated by the generation unit, the first image data generation unit, and the second image data generated by the second image data generation unit are respectively converted into the first image and the second image data. An image drawing unit that draws as an image, an image selection unit that arbitrarily selects the first image data and the second image data, and the image drawing unit that performs drawing processing according to a selection result of the image selection unit The first image and the first An image switching unit that switches between images, a light projection unit that projects the first image or the second image drawn by the image drawing unit, an illumination parameter input unit that inputs the illumination parameter, and the illumination parameter input A parameter conversion unit that converts the illumination parameters input to the unit into R, G, and B gradation values and transmits the converted values to the second image data generation unit, and the image switching unit includes the display object To switch between the first image and the second image projected from the light projection unit depending on whether or not an observer exists within a predetermined range.

  According to this configuration, both the image light and the illumination light can be effectively projected by the same light projection device. At this time, with respect to the illumination light, as in general illumination, it is possible to perform light adjustment and color adjustment suitable for illumination light by adjusting the brightness and color temperature as illumination parameters.

  In addition, a sensor unit that detects whether or not the observer is present within a predetermined range from the display object, the image selection unit is an image drawing unit according to a detection result of the sensor unit. The first image or the second image to be drawn may be selected.

  According to this configuration, by providing the sensor unit, the first image and the second image are automatically detected without detecting whether the observer is present within a predetermined range from the display object. And can be switched.

  Further, when a part or all of the first image is projected onto the uneven display object, the first image without shape distortion is observed from the observation position of the observer. An image data shape correction processing unit that performs geometric correction processing on the first image data may be provided.

  According to this configuration, even if the display object is a three-dimensional object with projections and depressions, it is possible to project video light having no shape distortion from the light projection unit to the display object.

  Further, when a part or all of the first image is projected onto the colored display object, the color of the first image is the first image when viewed from the observation position of the observer An image data color correction processing unit that corrects the color of the first image data may be provided so that the first image data is observed as a normal color.

  According to this configuration, even if the display object is a three-dimensional object with a color, it is possible to project video light that looks like a color to be displayed on the display object from the light projection unit.

  Moreover, you may provide the image data trimming process part which trims said 2nd image data projected from the said light projection part according to the outline of the said display target object.

  According to this configuration, illumination that emphasizes the display object can be performed by illuminating the display object brightly and illuminating the information presentation area darkly.

  In addition, a blur width setting unit for setting an arbitrary blur width is provided, and the contour of the second image data trimmed by the image data trimming processing unit is blurred by the blur width set by the blur width setting unit. Also good.

  According to this configuration, it is possible to project more natural illumination light by blurring the outline of the illumination light from the light projection unit to the information presentation area and the display object.

  In addition, a drive unit that moves the light projection unit may be provided so that the projection direction of the light projection unit becomes a preset direction when the projection of the first image and the second image is switched.

  According to this configuration, the light projection unit adjusts the switching between the first image and the second image when the direction in which the first image that is the image light is projected differs from the direction in which the second that is the illumination light is projected. Thus, the projection direction can be automatically changed by the drive unit.

  A server storing the first image data, the second image data, and an image selection signal for causing the image selection unit to select either the first image or the second image; And a data communication unit that receives at least one of the first image data, the second image data, and the image selection signal.

  According to this configuration, since the first image data and the second image data can be acquired from the server by data communication without including the first image data processing unit and the second image data processing unit, the light projection device Can be miniaturized. Further, the first image and the second image can be used in common by a plurality of light projection devices or different light projection devices.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Each of the embodiments described below shows a preferred specific example of the present invention. Therefore, the numerical values, shapes, materials, constituent elements, arrangement positions and connecting forms of constituent elements, processes, order of processes, and the like shown in the following embodiments are merely examples and do not limit the present invention. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims showing the highest concept of the present invention are described as optional constituent elements.

  Each figure is a schematic diagram and is not necessarily illustrated strictly. Moreover, in each figure, the same code | symbol is attached | subjected to the substantially same structure, The overlapping description is abbreviate | omitted or simplified.

(Embodiment 1)
FIG. 1 is a block diagram showing a configuration of an optical projection apparatus 1 according to the present embodiment.

  As shown in FIG. 1, the optical projection device 1 generates a first image data generation unit 11 that generates first image data that constitutes a first image that is an image adjusted by each of R, G, and B gradation values. A second image data generation unit 12 that generates second image data that constitutes a second image that is an image that includes lighting information and is adjusted by an illumination parameter that includes brightness and color temperature; and a first image An image drawing unit 15 for drawing the first image data generated by the data generation unit 11 and the second image data generated by the second image data generation unit 12 as a first image and a second image, respectively; An image selection unit 13 that arbitrarily selects image data and second image data, and an image switching unit that switches between a first image and a second image drawn by the image drawing unit 15 according to a selection result of the image selection unit 13 14 and images The light projection unit 20 that projects the first image or the second image drawn by the image unit 15, the illumination parameter input unit 18 that inputs illumination parameters, and the illumination parameters that are input to the illumination parameter input unit 18 are R, And a parameter converter 17 for converting the gradation values to G and B, respectively.

  The light projection device 1 is functionally composed of a calculation unit 10 and a light projection unit 20. The calculation unit 10 is, for example, a calculation device that is built together with the light projection unit 20 in a housing in which the light projection unit 20 is built. The light projection unit 20 is configured by a light irradiation device including, for example, an LED, a laser, a metal halide lamp (or an ultrahigh pressure mercury lamp) as a light source. The calculation unit 10 may be configured by a calculation device such as a personal computer that is externally attached to the light projection unit 20.

  2A and 2B are diagrams illustrating an operation example of the light projection device 1 according to the present embodiment. FIG. 2A is a perspective view illustrating a state in which the image light is irradiated, and FIG. 2B is a perspective view illustrating a state in which the illumination light is irradiated.

  As shown in FIGS. 2A and 2B, the light projection device 1 projects an image onto an area other than the display object 3 and the display object 3.

  Here, the display object 3 refers to any object that can be displayed, such as a three-dimensional product having an arbitrary uneven shape, a product model, a plate, and an exhibition panel. Further, the area other than the display object 3 is, for example, a screen, a panel, a wall surface, a floor surface, etc. disposed on the back side of the display object 3 as viewed from the observer 5 who observes the display object 3. It refers to the information presentation area 2 in which information related to the display object 3 can be presented to the observer 5 by projecting characters and images.

  The image projected by the optical projection device 1 is an image as image light for presenting information such as the description of the display object 3 in the information presentation area 2 and an image as illumination light for illuminating the display object 3. is there. The light projection device 1 switches these images and projects them on the information presentation area 2 and the display object 3 according to the situation.

  For example, a case where a mannequin is displayed as the display object 3 in front of the screen which is the information presentation area 2 will be described. When the optical projection device 1 presents information such as the explanation of the display object 3 in the information presentation area 2, as shown in FIG. Irradiate video light (image) containing information. Moreover, when it is desired to light up and emphasize the display object 3, the light projection device 1 emits illumination light (image) as shown in FIG. 2B. As described above, the light projection device 1 switches between the image light and the illumination light by the single light projection device 1 by switching so that the image as the image light and the image as the illumination light are projected. Irradiate both.

  Hereinafter, the configuration of the light projector 1 will be described in detail.

  As described above, the light projection device 1 functionally includes the calculation unit 10 and the light projection unit 20.

  As shown in FIG. 1, the calculation unit 10 includes a first image data generation unit 11, a second image data generation unit 12, an image selection unit 13, an image switching unit 14, and an image drawing unit 15. Yes.

  The first image data generation unit 11 generates first image data that constitutes image light (first image) that includes information such as an explanation of the display object 3 to be projected onto the information presentation area 2 and the display object 3. To do. Note that the image light including information such as the description of the display object 3 corresponds to the first image in the present invention. The first image is an arbitrary image such as a text image (character), a CG image created by a PC or the like, or a real image taken by a camera. The first image may include a still image and a moving image. Note that an image composed of only a single color is included in the CG image. The first image is not limited to gradation display using RGB. For example, a color system using luminance or color difference such as YUV can be used. An image represented by an arbitrary color system may be converted into gradation display using RGB to form first image data.

  The second image data generation unit 12 generates second image data constituting illumination light (second image) for illuminating the display object 3. The illumination light that illuminates the display object 3 corresponds to the second image in the present invention. The second image is an image simulating illumination light. The second image may be an image composed of only a single color, or may be an image configured to change into a plurality of colors over time.

  The first image data generation unit 11 and the second image data generation unit 12 may create the first image data and the second image data with an existing image creation tool, respectively, or the first image created in advance. The data and the second image data may be stored in the first image data generation unit 11 and the second image data generation unit 12, respectively, and the stored first image data and second image data may be read at the time of image projection.

  The image selection unit 13 arbitrarily selects which of the first image and the second image is to be projected. That is, any one of the first image data and the second image data is arbitrarily selected. The selection of an image in the image selection unit 13 may be performed by the user, or may be automatically performed at regular time intervals or at a predetermined time.

  The image switching unit 14 switches between a first image and a second image to be rendered by the image rendering unit 15 to be described next, according to the result selected by the image selection unit 13. The first image and the second image may be switched according to whether or not the observer 5 is present in the designated area, or may be performed by the user arbitrarily operating the image switching unit 14. It may be broken. Note that switching between the first image and the second image will be described in detail later.

  The image drawing unit 15 includes image elements such as a liquid crystal panel and a DMD (Digital Micromirror Device) panel, and performs a drawing process of arranging RGB on the pixels constituting the screen. In accordance with the switching of the first image and the second image in the image switching unit 14, either the first image data or the second image data is drawn.

  The light projection unit 20 projects the first image and the second image drawn by the image drawing unit 15 onto the information presentation area 2 and the display object 3. The light projection unit 20 is, for example, a lighting device, and is installed at a position where a range including at least a part of a region where the display object 3 exists is a projection range. Therefore, the range that can be projected by the light projection unit 20 is the information presentation region 2.

  Specifically, the light projection unit 20 projects the first image on the entire information presentation area 2 as indicated by the hatched lines in FIG. 2A. At this time, the first image may be projected also on the display object 3.

  Moreover, the light projection part 20 projects a 2nd image on the display target object 3, as shown to FIG. 2B. At this time, the second image may be projected onto a part of the information presentation area 2.

  Note that the light projector 1 does not distinguish between the projection areas of the first image and the second image. Therefore, the first image may be projected onto the display object 3 or the second image may be projected onto the information presentation area 2.

  3A and 3B are perspective views illustrating an example of switching between image light and illumination light in the light projector 1 according to the first embodiment.

  As an example of switching between image light and illumination light, as shown in FIG. 3A (a), when the observer 5 is far away from the display object 3, the display object 3 is displayed on the display object 3 or on display. A first image, which is video light for eye catching, guidance, and information provision, is projected onto the object 3 and the information presentation area 2 around it. When the observer 5 approaches the display object 3, the display object is switched to the second image that is illumination light for the purpose of lighting up the display object 3, and as shown in FIG. A second image is projected onto the object 3.

  As another example, as shown in FIG. 3B (a), when the observer 5 is far from the display object 3, illumination light for the purpose of lighting up the display object 3 is used. A second image is projected. Further, when the observer 5 approaches the display object 3, the first image light is used for eye catching, guidance, and information provision to the display object 3 or the information display area 2 around the display object 3. Switching to the image, the first image is projected onto the information providing area 2 or the information presentation area 2 and the display object 3 as shown in FIG. 3B (b).

  With such a configuration, the light projector 1 according to the present embodiment can effectively project both the image light and the illumination light with the same light projector.

  Note that the light projector 1 may be configured such that the brightness and color of the illumination light can be arbitrarily changed for the second image projected as illumination light, as shown in the following modification.

(Modification of Embodiment 1)
Hereinafter, modifications of the first embodiment will be described. FIG. 4 is a block diagram showing the configuration of the light projection apparatus according to this modification.

  As shown in FIG. 4, the light projection device 1 in the present modification further includes a parameter conversion unit 17 and an illumination parameter input unit 18 in the calculation unit 10 a of the light projection device 1 shown in the first embodiment. ing. Thereby, the light projector 1 can perform light control and color control of the second image which is illumination light.

  In general, lighting changes the brightness and color of an illumination by adjusting the brightness [percentage] and the color temperature [Kelvin]. Therefore, when the light projection device 1 performs light adjustment and color adjustment of the second image that is illumination light, the brightness and the color temperature are the illumination parameters. That is, the brightness and color of illumination light are adjusted by changing at least one of brightness and color temperature. For the image light, the brightness and color of the image light can be changed by changing the output value of the brightness and the respective gradation values of R, G, and B.

  The illumination parameter input unit 18 is, for example, an adjustment device that includes a knob that can be moved manually, and may adjust brightness and color temperature by moving the position of the knob. The brightness and the color temperature may be adjusted by changing the numerical value or the cursor position on the computer screen. Further, at least one of brightness and color temperature may be automatically changed by a computer.

  The parameter conversion unit 17 converts the illumination parameter input by the illumination parameter input unit 18 into R, G, and B gradation values for images. That is, in the illumination parameter input unit 18, when at least one of brightness and color temperature is changed, the respective gradations of R, G, and B for an image are changed according to the changed value.

  Further, the parameter conversion unit 17 transmits the converted R, G, and B gradation values to the second image data generation unit 12. As a result, the second image data generation unit 12 generates second image data based on the brightness and color temperature adjusted by the illumination parameter input unit 18. By projecting the second image by the light projection unit 20, illumination light whose illumination brightness and color are changed is projected. Therefore, also in the light projection apparatus 1, light adjustment and color adjustment suitable as illumination light can be performed by adjusting the brightness and color temperature in the same manner as in general illumination.

  As described above, according to the light projector 1 according to the present embodiment, both the image light and the illumination light can be effectively projected by the same light projector. At this time, with respect to the illumination light, as in general illumination, it is possible to perform light adjustment and color adjustment suitable for illumination light by adjusting the brightness and color temperature as illumination parameters.

(Embodiment 2)
Next, an optical projection apparatus according to Embodiment 2 will be described with reference to FIGS. FIG. 5 is a block diagram showing a configuration of the light projection apparatus according to the present embodiment. FIG. 6 is a perspective view showing an example of switching between image light and illumination light in the light projection apparatus according to the present embodiment.

  The light projection apparatus according to the present embodiment is different from the light projection apparatus 1 according to Embodiment 1 in that a sensor unit 30 is provided as shown in FIG.

  The sensor unit 30 detects whether or not an observer exists within a predetermined range from the display object. Then, according to the detection result of the sensor unit 30, the image selection unit 13 selects the first image or the second image to be drawn by the image drawing unit 15.

  The sensor unit 30 is, for example, an infrared sensor, a camera sensor, or the like, and detects whether the observer 5 exists within a predetermined range from the display object 3. The range in which the presence of the observer 5 can be detected by the sensor unit 30 is, for example, a range from 2 to 3 m from the display object 3.

  When detecting that the observer 5 is within a certain range from the display object 3, the sensor unit 30 transmits the result to the image selection unit 13. The image selection unit 13 determines which of the first image and the second image is selected based on the result detected by the sensor unit 30.

  For example, as shown in FIG. 6A, when the observer 5 is far from the display object 3, that is, when the presence of the observer 5 is not detected by the sensor unit 30, the image selection unit 13 selects a first image that is video light. Thereby, the light projection unit 20 projects the first image onto the information presentation area 2 and the display object 3.

  As shown in FIG. 6B, when the observer 5 approaches the display object 3, that is, when the presence of the observer 5 is detected by the sensor unit 30, the image selection unit 13 is The second image that is the illumination light is selected. Thereby, the projection unit 20 projects the second image onto the information presentation area 2 and the display object 3. Therefore, it appears to the observer 5 that the display object 3 is lit up.

  As described above, according to the light projection device according to the present embodiment, by providing the sensor unit 30, it is detected whether or not the observer 5 exists within a predetermined range from the display object 3, and according to the manual operation of the user. Without first switching between the first image and the second image.

  In addition, when the presence of the observer 5 is not detected by the sensor unit 30, the image selection unit 13 selects the second image that is illumination light, and when the presence of the observer 5 is detected by the sensor unit 30. The first image that is video light may be selected.

(Embodiment 3)
Next, an optical projection apparatus according to Embodiment 3 will be described with reference to FIG. FIG. 7 is a block diagram showing a configuration of the light projection apparatus according to the present embodiment.

  The light projection apparatus according to the present embodiment is different from the light projection apparatus according to Embodiment 1 in that the calculation unit 10b further includes an image data shape correction processing unit 40 as shown in FIG. .

  When a part or all of the first image is projected onto the uneven display object 3, the image data shape correction processing unit 40 generates a first image without shape distortion from the observation position of the observer 5. As observed, the shape of the first image data is corrected (geometric correction).

  When the first image, which is image light, is projected onto the information presentation area 2 and the display object 3, the image light projected onto the display object 3 with respect to the image light projected onto the information presentation area 2 has a shape. Distortion occurs. If the display object 3 is a three-dimensional object with unevenness, the shape of the display object 3 causes distortion in the shape of the image light. Therefore, in order to make the image light look like an image without distortion, it is necessary to correct the shape of the projection position where the distortion is assumed.

  The image data shape correction processing unit 40 corrects the shape of the image projected on the display object 3 when the first image that is video light is projected on the information presentation area 2 and the display object 3. is there.

  Specifically, the image data shape correction processing unit 40 corrects the distortion of the shape in advance for the portion of the first image data generated by the first image data generation unit 11 that is projected on the position of the display object 3. The corrected data is generated. Then, the correction data is transmitted from the image data shape correction processing unit 40 to the image drawing unit 15. As a result, the image drawing unit 15 draws the first image data whose shape has been corrected in advance. Then, the drawn first image data is projected from the light projection unit 20.

  Next, in the light projection apparatus, even when the display object 3 is a three-dimensional object with projections and depressions, it will be described that the image light having no shape distortion can be projected from the light projection unit 20 onto the display object 3.

  For example, as shown in FIG. 8, a flat object 41 a that is separated from the observer 5 by a distance L and is inclined with respect to the observer 5 is considered as the display object 3. This flat object 41a is visually recognized from the viewpoint position P1 of the observer 5 at a viewing angle θ1. The distance from the point P2 on the flat object 41a intersecting the center of the visual field of the observer 5 to the observer 5 is separated by a distance L1.

  In the positional relationship between the viewpoint position P1 and the point P2 on the flat object 41a, as shown in FIG. 9A, a lattice-like planar image 43 shown in FIG. Consider the case of viewing on a flat object 41a through the image plane 42a. In this case, when the same image is displayed on the flat object 41a as if the flat image 43 shown in FIG. 9B is displayed on the image surface 42a, each coordinate on the image surface 42a and on the flat object 41a are displayed. It is necessary to obtain the correspondence with each coordinate. Although schematically shown in FIG. 9A, the points b1, b2, b3, b4, and b5 on the image plane 42a correspond to the points a1, a2, a3, a4, and a5 on the flat object 41a. doing. Therefore, the images displayed at the points a1, a2, a3, a4, and a5 on the flat object 41a are visually recognized by the observer 5 as the points b1, b2, b3, b4, and b5 on the image surface 42a.

  Further, as shown in FIG. 10, the point P2 where the line of sight of the observer 5 and the flat object 41a intersect with the projection position P3 of the light projection unit 20 is a distance L2. Further, the light projection unit 20 projects the projection light within a predetermined projection angle of view θ2.

  In this case, the positional relationship between the image plane 42b of the light projection unit 20 and the flat object 41a is such that the points a1, a2, a3, a4, and a5 on the flat object 41a are as shown in FIG. , Corresponding to points c1, c2, c3, c4, and c5 on the image plane 42b. That is, points on a straight line obtained by extending the points c1, c2, c3, c4, and c5 on the image plane 42b from the projection position P3 of the light projection unit 20 are points a1, a2, a3, a4, and a5 of the flat object 41a. It becomes.

  From such a relationship between the viewpoint position P1 and viewing angle θ1 of the observer 5, the position of the flat object 41a, the projection position P3 of the light projection unit 20, and the projection angle of view θ2, the light projection shown in FIG. When an image is projected onto the points c1, c2, c3, c4, and c5 on the image plane 42b in the unit 20, the images are projected onto the points a1, a2, a3, a4, and a5 on the flat object 41a. As a result, the points a1, a2, a3, a4, and a5 on the flat object 41a are visually recognized as the points b1, b2, b3, b4, and b5 on the image plane 42a in FIG. . Therefore, in order for the observer 5 to visually recognize the planar image 43, the light projection unit 20 uses the coordinates on the flat object 41a corresponding to the coordinates on the image surface 42a and the coordinates on the image surface 42b. Based on the corresponding relationship with each coordinate on the corresponding flat object 41a, it is necessary to project a distorted planar image 43a as shown in FIG.

  In order to realize such a projection operation of the light projection device, the arithmetic device, as shown in FIG. 9A, the viewpoint position and orientation parameter indicating the viewpoint position indicating the viewpoint position P1 of the observer 5 and the line-of-sight direction. And a viewing angle parameter indicating the viewing angle θ1 of the observer 5 is acquired. These parameters of the observer 5 define the above-described image plane 42a.

  Further, the shape data of the flat object 41a onto which the image light emitted from the light projection unit 20 is projected is acquired. This shape data is, for example, CAD data. Here, the viewpoint position and orientation parameter is a numerical value that defines a position on the X, Y, and Z axes and a rotation angle around the axis in a three-dimensional coordinate space. This viewpoint position and orientation parameter uniquely determines the distance L1 between the viewpoint position P1 and the flat object 41a and the attitude of the flat object 41a with respect to the viewpoint position P1. The shape data of the flat object 41a is defined as a shape region in a three-dimensional coordinate space based on electronic data created by CAD or the like. This shape data uniquely determines the shape of the flat object 41a viewed from the viewpoint position P1. The shape data of the flat object 41a and the parameters of the observer 5 determine the correspondence between the coordinates of the image plane 42a and the coordinates on the flat object 41a.

  In addition, as shown in FIG. 10, the light projection unit 20 is installed, and the arithmetic unit performs a projection position P3 of the light projection unit 20 and a position and orientation parameter indicating the optical axis direction of the light projection unit 20 and light projection. A projection field angle parameter indicating the projection field angle θ2 of the unit 20 is acquired. The position and orientation parameters and the projection angle of view parameter of the light projection unit 20 represent the image plane 42b that the light projection unit 20 projects onto the flat object 41a. When the image plane 42b is determined, it is determined on which coordinate of the flat object 41a the image light projected from the light projection unit 20 is projected via the image plane 42b. That is, the position / orientation parameter and projection angle-of-view parameter of the light projection unit 20 and the position / orientation parameter and shape data of the flat object 41a are the ranges of the flat object 41a covered by the image light emitted from the light projection unit 20. Is uniquely determined. When the light projection unit 20 is a projector, the projection position P3 is defined by a back focus and a driving angle, and the projection angle of view θ2 is calculated from a horizontal and vertical projection range at a fixed distance from the projection position P3.

  The arithmetic unit then intersects the image plane 42b with a straight line connecting the pixels (a1, a2, a3, a4, a5) of the image light displayed on the flat object 41a and the projection position P3 of the light projection unit 20. Pixels are arranged at (c1, c2, c3, c4, c5) to form a planar image 43a, and the planar image 43a is projected onto the flat object 41a. Then, points c1, c2, c3, c4, c5 on the image plane 42b, points a1, a2, a3, a4, a5 on the flat object 41a, points b1, b2, b3, b4, b5 on the image plane 42a. In this way, the viewer 5 can visually recognize an image without distortion.

  Similarly, even if the display object 3 is not shaped like the flat object 41a but is a dome shape, it is possible for the observer 5 to visually recognize the image light having no shape distortion. Consider a scene in which the display object 3 is a dome-shaped object 41b as shown in FIG. 12A and the observer 5 visually recognizes the lattice-like image light as shown in FIG. 12B. In this case, the observer 5 can visually recognize the points a1, a2, a3, a4, and a5 on the dome-shaped object 41b on the extension line of the points b1, b2, b3, b4, and b5 on the image plane 42a. On the other hand, the light projection unit 20 projects image light onto the image surface 42b as shown in FIG. The image light that has passed through the points c1, c2, c3, c4, and c5 on the image plane 42b is projected onto the points a1, a2, a3, a4, and a5 on the dome-shaped object 41b, as shown in FIG. It is visually recognized as points b1, b2, b3, b4, b5 on the image plane 42a. Therefore, the light projection unit 20 projects a flat image 43a distorted as shown in FIG. 13B on the image surface 42b. On the other hand, the observer 5 can visually recognize a flat image 43 having no distortion as shown in FIG.

  As a result, the light projection apparatus according to the present embodiment projects image light without distortion of the shape from the light projection unit 20 to the display object 3 even if the display object 3 is a three-dimensional object with unevenness. can do.

  The above-described image data shape correction processing unit 40 generates correction data in which the shape distortion is corrected in advance for a part of the first image, specifically, a portion projected on the position of the display object 3. However, the distortion of the shape may be corrected in advance for all data of the first image, not limited to a part of the first image.

(Embodiment 4)
Next, an optical projection apparatus according to Embodiment 4 will be described with reference to FIG. FIG. 14 is a block diagram showing a configuration of the light projection apparatus according to the present embodiment.

  The difference between the light projection apparatus according to the present embodiment and the light projection apparatus according to Embodiment 1 is that the calculation unit 10c further includes an image data color correction processing unit 45 as shown in FIG. .

  The image data color correction processing unit 45 wants to display the color of the first image from the observation position of the observer 5 when a part or all of the first image is projected onto the colored display object 3. The first image data is color corrected so that it is observed as a color.

  When the first image that is image light is projected onto the information presentation area 2 and the display object 3, the image light projected onto the display object 3 with respect to the image light projected onto the information presentation area 2 is The color looks different from the desired color depending on the color of the object 3. Therefore, it is necessary to correct the color of the video light so that the color of the video light looks like a normal color to be displayed.

  The image data color correction processing unit 45 corrects the color of the image projected on the display object 3 when the first image that is video light is projected on the information presentation area 2 and the display object 3. is there.

  Specifically, the image data color correction processing unit 45 is projected to the position of the display object 3 based on a predetermined correction method among the first image data generated by the first image data generation unit 11. Color correction is performed for the area to be displayed. Then, the generated correction data is transmitted from the image data color correction processing unit 45 to the image drawing unit 15. As a result, the image drawing unit 15 draws the first image data on which color correction has been performed in advance. Then, the drawn first image data is projected from the light projection unit 20.

  As a result, the optical projection apparatus according to the present embodiment allows the image light that appears to be displayed on the display object 3 from the light projection unit 20 even if the display object 3 is a colored three-dimensional object. Can be projected.

  Note that the above-described image data color correction processing unit 45 generates correction data in which color correction has been performed in advance on a part of the first image, specifically, a portion projected on the position of the display object 3. However, not only a part of the first image but also all data of the first image may be corrected in advance.

(Embodiment 5)
Next, an optical projection apparatus according to Embodiment 5 will be described with reference to FIGS. 15 and 16. 15 and 16 are block diagrams showing the configuration of the light projection apparatus according to the present embodiment.

  The difference between the light projection apparatus according to the present embodiment and the light projection apparatus according to Embodiment 1 is that the calculation unit 10d further includes an image data trimming processing unit 50, as shown in FIG.

  The image data trimming processing unit 50 trims the second image data projected from the light projecting unit 20 according to the outline of the display object 3. Note that the image data trimming processing unit 50 may perform the trimming process according to the shape of the area to be illuminated.

  Specifically, the image data trimming processing unit 50 projects the second image data on the portion of the second image data generated by the second image data generation unit 12 that is projected on the position of the display object 3. Then, the trimmed data is generated so that the second image data is not projected for the portion other than the position of the display object 3. That is, in accordance with the shape of the display object 3, data in which trimming processing is performed on portions other than the shape of the display object 3 is generated. Then, the trimmed data is transmitted from the image data trimming processing unit 50 to the image drawing unit 15. As a result, the image drawing unit 15 draws the second image data subjected to the trimming process. Then, the drawn second image data is projected from the light projection unit 20.

  Thereby, the light projection apparatus according to the present embodiment can project the illumination light subjected to the trimming process from the light projection unit 20 to the information presentation area 2 and the display object 3. Therefore, for example, by illuminating the display object 3 and illuminating the information presentation area 2, it is possible to perform illumination that emphasizes the display object 3.

  In the above-described image data trimming processing unit 50, a part of the first image, specifically, the second image projected on the position of the information presentation area 2 so that the position of the display object 3 is emphasized. Trimming processing has been performed on the data. For example, the second image data is not projected on the position of the display object 3 so as to emphasize the display object 3 as a silhouette, and a part other than the position of the display object 3 The trimming process may be performed on the second image data so that the second image data is projected, and the display object 3 may be darkened and the information providing area may be brightly illuminated.

  The light projection device may blur the outline of the second image that has been trimmed so that the display object 3 is emphasized. For this purpose, the light projection apparatus may include a blur width setting unit 60 that sets an arbitrary blur width, as shown in the calculation unit 10e of FIG. The blur width setting unit 60 sets a blur width for blurring the outline of the second image data trimmed by the image data trimming processing unit. By blurring the outline of the trimmed portion, the second image can be made more natural illumination light. Furthermore, it is possible to make the portion of the illumination projected on the display object leaking light from the rear surface inconspicuous.

  Specifically, the blurring is to gradually change the brightness of a few pixels at the boundary of the part subjected to the trimming process from the part not subjected to the trimming process toward the part subjected to the trimming process. The brightness at this time and the width (blur width) for changing the brightness are changed.

  Thereby, the light projection apparatus according to the present embodiment can project more natural illumination light by blurring the outline of the illumination light from the light projection unit 20 to the information presentation area 2 and the display object 3. it can.

(Embodiment 6)
Next, an optical projection apparatus according to Embodiment 6 will be described with reference to FIG. FIG. 17 is a block diagram showing a configuration of the light projection apparatus according to the present embodiment.

  The light projection apparatus according to the present embodiment is different from the light projection apparatus according to Embodiment 1 in that a drive unit 70 is provided as shown in FIG.

  The drive unit 70 moves the light projection unit 20 so that the projection direction of the light projection unit 20 becomes a preset direction when switching between the projection of the first image and the second image. The drive part 70 is comprised, for example with the motor. The drive unit 70 is connected to the image selection unit 13 and drives the light projection unit 20 so as to change the projection direction of the light projection unit 20 in accordance with the selection of the first image or the second image by the image selection unit 13. To do. Further, the projection direction of the first image and the projection direction of the second image may be set in advance in desired directions, respectively, or may be appropriately changed according to the position of the observer 5.

  Thereby, the light projection unit 20 is adapted to switch between the first image and the second image when the direction of projecting the first image that is video light is different from the direction of projecting the second that is illumination light. The projection direction can be automatically changed by the drive unit 70.

(Embodiment 7)
Next, an optical projection apparatus according to Embodiment 7 will be described with reference to FIG. FIG. 18 is a block diagram showing a configuration of the light projection apparatus according to the present embodiment.

  The light projection apparatus according to the present embodiment is different from the light projection apparatus 1 according to the first embodiment in that the light projection apparatus does not include the first image data processing unit and the second image data processing unit, and data The first image data and the second image data are acquired from the server by communication.

  As illustrated in FIG. 18, the light projection apparatus includes a calculation unit 10 f, a light projection unit 20, a drive unit 70, and a server 80. Since the light projection unit 20 and the drive unit 70 are the same as the light projection unit 20 and the drive unit 70 in the above-described sixth embodiment, description thereof is omitted.

  The calculation unit 10f includes an image selection unit 13, an image switching unit 14, an image drawing unit 15, an image data correction processing unit 81, an image data trimming processing unit 82, and a data communication unit 83. The image selection unit 13, the image switching unit 14, and the image drawing unit 15 are the same as the image selection unit 13, the image switching unit 14, and the image drawing unit 15 in Embodiments 1 to 6 described above, and thus description thereof is omitted. To do. In addition, the image data correction processing unit 81 is at least one of the image data shape correction processing unit 40 and the image data color correction processing unit 45 described in the third and fourth embodiments, and a description thereof will be omitted. Further, the image data trimming processing unit 82 is the same as the image data trimming processing unit 50 shown in the fifth embodiment, and thus the description thereof is omitted.

  The server 80 is a server that stores first image data, second image data, and an image selection signal. The image selection signal is a signal for causing the image selection unit 13 to select either the first image or the second image.

  The data communication unit 83 performs data communication with the server 80, and acquires first image data, second image data, and an image selection signal from the server 80.

  The first image and the second image acquired by the data communication unit 83 are subjected to the correction of the shape of the first image and the correction of the color of the first image by the image data correction processing unit 81, and the image data trimming processing unit 82. Thus, the trimming process for emphasizing the second image is performed, and then transmitted to the image drawing unit 15. Further, the image selection signal acquired by the data communication unit 83 is transmitted to the image selection unit 13. The image selection unit 13 selects either the first image data or the second image data transmitted to the image drawing unit 15 based on the image selection signal. As a result, either the first image or the second image drawn by the image drawing unit 15 is projected from the light projection unit 20.

  As a result, the light projection apparatus can acquire the first image data and the second image data from the server 80 by data communication without including the first image data processing unit and the second image data processing unit. The light projection apparatus can be reduced in size. Further, the first image and the second image can be used in common by a plurality of light projection devices or different light projection devices.

  The light projection apparatus may be configured not to include the image data correction processing unit 81 and the image data trimming processing unit 82.

(Other variations)
While the light projection apparatus according to the present invention has been described based on the embodiment, the present invention is not limited to the above embodiment.

  For example, in the above-described embodiment, when the presence of the observer is detected by the sensor unit, the image selection unit selects the second image that is illumination light, and the presence of the observer is not detected by the sensor unit. In this case, the first image that is video light may be selected. If the presence of the observer is not detected by the sensor unit, the second image that is illumination light is selected and When the presence is detected, the first image that is video light may be selected.

  In addition, the above-described image data shape correction processing unit generates correction data in which the distortion of the shape is corrected in advance for a part of the first image, specifically, a portion projected on the position of the display object 3. However, the distortion of the shape may be corrected in advance for all data of the first image, not limited to a part of the first image.

  Further, the image data color correction processing unit described above generates correction data in which color correction has been performed in advance for a part of the first image, specifically, a portion projected on the position of the display object. However, not only a part of the first image but also all the data of the first image may be corrected in advance.

  Further, in the above-described image data color correction processing unit, a part of the first image, specifically, the second image data projected on the position of the information presentation area so that the position of the display object is emphasized. Although the trimming process has been performed, for example, the trimming process is performed on the second image data projected on the position of the display object so as to emphasize the display object as a silhouette, the display object is darkened, and the information providing area is You may illuminate brightly.

  In addition, the form obtained by making various modifications conceived by those skilled in the art with respect to each embodiment and modification, and the components and functions in each embodiment and modification are arbitrarily set within the scope of the present invention. Forms realized by combining them are also included in the present invention.

DESCRIPTION OF SYMBOLS 1 Optical projection apparatus 2 Information presentation area 3 Display object 5 Viewer 10, 10a, 10b, 10c, 10d, 10e, 10f Calculation part 11 1st image data generation part 12 2nd image data generation part 13 Image selection part 14 Image Switching unit 15 Image drawing unit 17 Parameter conversion unit 18 Illumination parameter input unit 20 Light projection unit 30 Sensor unit 40 Image data shape correction processing unit 45 Image data color correction processing unit 50, 82 Image data trimming processing unit 60 Blur width setting unit 70 Drive unit 80 Server 83 Data communication unit

Claims (8)

A first image data generation unit that generates arbitrary first image data that includes arbitrary information and forms a first image that is an image that is adjusted with each of the gradation values of R, G, and B;
A second image data generation unit that generates second image data constituting a second image that includes information for illumination and that is an image adjusted by illumination parameters including brightness and color temperature;
The first image data generated by the first image data generation unit and the second image data generated by the second image data generation unit are drawn as the first image and the second image, respectively. An image drawing unit;
An image selection unit for arbitrarily selecting the first image data and the second image data;
An image switching unit that switches between the first image and the second image drawn by the image drawing unit according to a selection result of the image selection unit;
A light projection unit for projecting the first image or the second image drawn by the image drawing unit;
An illumination parameter input unit for inputting the illumination parameter;
A parameter conversion unit that converts the illumination parameter input to the illumination parameter input unit into gradation values of R, G, and B and transmits the converted values to the second image data generation unit;
The image switching unit is a light projection device that switches between the first image and the second image projected from the light projection unit depending on whether or not an observer exists within a predetermined range from the display object. A sensor unit for detecting whether or not the observer exists within a predetermined range from the display object;
The light projection device according to claim 1, wherein the image selection unit selects the first image or the second image to be drawn by the image drawing unit according to a detection result of the sensor unit. When a part or all of the first image is projected onto the uneven display object, the first image without distortion of the shape is observed from the observer's observation position. The light projection apparatus according to claim 1, further comprising an image data shape correction processing unit that performs geometric correction processing on the first image data. When a part or all of the first image is projected onto the colored display object, the color of the first image is normal when viewed from the observation position of the observer The light projection device according to claim 1, further comprising an image data color correction processing unit that corrects the color of the first image data so that the first image data is observed as a correct color. 5. The light projection device according to claim 1, further comprising an image data trimming processing unit configured to trim the second image data projected from the light projecting unit in accordance with an outline of the display object. . It is equipped with a blur width setting part to set an arbitrary blur width,
The light projection device according to claim 5, wherein an outline of the second image data trimmed by the image data trimming processing unit is blurred with a blur width set by the blur width setting unit. 7. A drive unit that moves the light projection unit so that a projection direction of the light projection unit becomes a preset direction when the projection of the first image and the second image is switched. 7. The light projection device according to claim 1. A server that stores the first image data, the second image data, and an image selection signal for causing the image selection unit to select either the first image or the second image;
The light projection according to claim 1, further comprising: a data communication unit that receives at least one of the first image data, the second image data, and the image selection signal from the server. apparatus.

Images