JP2011238370A - Optical projection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical projection device capable of cancelling shades generated, in a simple structure.SOLUTION: The optical projection device, in order to project light on any space where an object is contained, is provided with a shade area setting part (12) for specifying an area of a shade generated in the space, a projected light data generating part (11) for generating projected light data specifying projection light, a projected light data correction part (13) for correcting projected light data so as to project light in the shade area set by the shade area setting part (12), a projected light plotting part (14) for carrying out plotting treatment of projected light correction data generated by the projected light data correction part (13), and an optical projection part (2) for projecting light with the use of projected light plotting data plotted by the projected light plotting part (14).

Description

  The present invention relates to an optical projection apparatus that projects light to show an object.

  Conventionally, as a stereoscopic display device that can effectively represent the surface texture of an object in a stereoscopic shape model, a technique described in Patent Document 1 below is known. Conventionally, as in Patent Documents 2 and 3, there are known light projection apparatuses and illumination apparatuses that can project light in a shape desired by a user by controlling the shape of the projection light.

JP 2006-338181 A JP 2009-225432 A JP 2009-117351 A

  However, in the above-described technique, as illustrated in FIG. 1, when the object 101 exists between the light projection device 100 </ b> A that projects light onto a space or an object and the wall surface 102, the object 101 blocks the light and A shadow 102a is generated. In addition, as shown in FIG. 2, even when a plurality of objects 101 and 101 ′ are arranged, the object 101 ′ arranged in the front blocks the light, and the object 101 ′ arranged in the rear has a shadow. 101a 'occurs.

  Not only in a scene where such illumination is used, but also in a scene where an image is projected, if an object exists between the projector and the screen, the object blocks the image and a shadow is generated on the screen.

  Further, in the conventional illumination technique, as shown in FIGS. 3 and 4, shadows 102a and 101a generated on the wall surface 102 and the objects 101 and 101 ′ by multi-projection using a plurality of light projection apparatuses 100A and 100B. 'Turn off. However, this technique has a configuration in which the projection light is simply overlapped so as to fill the shadows 101a and 101a ', or a configuration in which the projection light is physically trimmed into a shadow shape using a light shielding plate and overlapped at the shadow position. is there.

  In the method of simply superimposing projection light, luminance unevenness occurs depending on the degree of light overlap, and the light projected on the wall surface 102 or the object 101 cannot be made uniform. Also, with the technique using a light shielding plate, it is difficult to perform shadow trimming and alignment of the light shielding plate.

  Furthermore, if the entire generated shadow is to be erased, it is necessary to project light onto the shadow from various angles using a plurality of light projection devices.

  In the video technology, there is a technology for projecting a video on a screen by a plurality of projectors and uniformly controlling the luminance of a region where the video is overlapped. However, it aims at improving brightness by overlapping images and projecting to a wide area by joining images, and has no effect of eliminating shadows.

  Therefore, the present invention has been proposed in view of the above-described circumstances, and an object thereof is to provide an optical projection apparatus that can erase a generated shadow with a simple configuration.

  A light projection device according to a first aspect of the present invention for solving the above-described problem is a light projection device that projects light onto an arbitrary space including an object, and specifies a shadow area that is generated in the space. Projection light data generating means for generating projection light data for specifying projection light, and projection light for correcting the projection light data so as to project light onto the shadow area set by the shadow area setting means Data is projected using data correction means, projection light drawing means for drawing projection light correction data generated by the projection light data correction means, and projection light drawing data drawn by the projection light drawing means And a light projection means.

  The light projection apparatus according to the first invention is the light projection device according to the second invention, wherein the projection light data generation means sets the elements including the illuminance, brightness, luminous intensity, luminous flux, color temperature, and color rendering properties of the projection light. It has a light setting means.

  The optical projection apparatus according to the first or second invention, wherein the projection light data generation means further divides the shadow area set by the shadow area setting means, and the divided shadow area Projection light data specifying the characteristics of the light to be projected for each is generated.

  The optical projection apparatus according to any one of the first to third inventions, wherein the fourth invention comprises shape drawing means for drawing an arbitrary shape in accordance with a user operation and generating shape data, and the shadow region The setting means uses the shape input by the shape drawing means as a shadow area.

  An optical projection apparatus according to a fourth invention, wherein the shape drawing means generates drawing locus data composed of continuous position data drawn according to a user operation, and the drawing locus data Is output to the shadow area setting means in real time, and the projection light drawing means draws the locus based on the outputted drawing locus data.

  The optical projection apparatus according to any one of the first to fifth inventions, wherein the sixth invention includes a shadow target region adjusting unit that adjusts a position and a shape of the shadow region set by the shadow region setting unit. It is characterized by that.

  A light projection apparatus according to a sixth aspect of the present invention is the light projection device according to the seventh aspect, wherein the projection light projected from the light projection means and the ambient light generating the shadow overlap at an arbitrary width. The shadow area set by the shadow area setting means is enlarged, and the brightness of the projection light projected by the projection light data is adjusted so that the brightness becomes uniform near the boundary of the overlap area of the enlarged projection light. Brightness adjusting means is provided.

  The optical projection apparatus according to any one of the first to seventh inventions is characterized in that the eighth invention further comprises drive means for vibrating the light projection means.

  The light projection apparatus according to any one of the first to eighth inventions, wherein the ninth invention comprises a plurality of the light projection means, and each light projection means projects projection light onto the shadow area. And

  The optical projection apparatus according to any one of the first to ninth inventions, wherein the tenth invention is an imaging unit having an imaging range of a space including the shadow area, and captured image data captured by the imaging unit. A conversion table that associates the position of the projected light projected from the light projection unit and the pixel position of the captured image data. Conversion table generation means for generating image data, shadow area extraction setting means for setting conditions for extracting the shadow area, and captured image data stored by the captured image storage means, and the shadow area extraction setting means A shadow area extracting means for extracting a shadow area according to a set condition; and a pixel position of the captured image data extracted as a shadow area by the shadow area extracting means. Pixel position conversion means for converting into a position of projection light projected from the light projection means using the generated conversion table, and the shadow area setting means is the projection light converted by the pixel position conversion means. Is set as a shadow region.

  The optical projection apparatus according to any one of the first to tenth inventions, wherein the projection light data is video data representing a video, and the shadow region setting means projects the video. A shadow area that is sometimes formed is set, and the projection light data correction unit projects the image projected onto the shadow area so that the image projected onto the shadow area is connected to the image projected around the shadow area. The projected light drawing unit performs a correction process on the video data corrected by the projected light data correcting unit, and the light projecting unit projects the image on the shadow area. To do.

  According to the present invention, since the shadow area is specified and the projection light data is corrected so as to project light onto the shadow area, the generated shadow can be eliminated with a simple configuration.

It is a top view which shows a mode that a shadow generate | occur | produces on a wall in background art. It is a top view which shows a mode that a shadow generate | occur | produces in an object in background art. It is a top view which shows the technique which erases the shadow on a wall in background art. It is a top view which shows the technique which erases the shadow on an object in background art. 1 is a block diagram of an optical projection system shown as a first embodiment of the present invention. It is a top view which shows a mode that the shadow image generate | occur | produced in the optical projection system shown as 1st Embodiment of this invention. In the light projection system shown as 1st Embodiment of this invention, it is a top view which shows a mode that projection light is projected on a shadow area | region by the 2nd light projection part. In the light projection system shown as 1st Embodiment of this invention, it is a top view which shows a mode that the shadow area | region which generate | occur | produced with the projection light of the 1st light projection part is erase | eliminated by the projection light of a 2nd light projection part. It is a perspective view which shows a mode that the 2nd light projection part and the 1st light projection part were arrange | positioned in the light projection system shown as 1st Embodiment of this invention. In the light projection system shown as 1st Embodiment of this invention, it is a perspective view which shows a mode that the projection light was projected from the 1st light projection part. In the light projection system shown as 1st Embodiment of this invention, it is a perspective view which shows a mode that projection light is projected from a 2nd light projection part with respect to a shadow area | region. It is a top view which shows a mode that the shadow area | region was able to be erase | eliminated in the optical projection system shown as 1st Embodiment of this invention. In the optical projection system shown as 1st Embodiment of this invention, it is a top view which shows the shadow area | region which becomes a blind spot from a viewpoint. In the light projection system shown as 1st Embodiment of this invention, it is a top view which shows not making it the illumination projection range of a 2nd light projection part to the shadow area | region which becomes a blind spot from a viewpoint. In the light projection system shown as 1st Embodiment of this invention, it is a top view which shows having made the shadow area of the object into the illumination projection range of the 2nd light projection part. In the light projection system shown as 1st Embodiment of this invention, the top view which shows a mode that only the shadow area | region which arose on the object with the projection light of the 1st light projection part is erase | eliminated by the projection light of a 2nd light projection part It is. It is a block diagram of the light projection system shown as 2nd Embodiment of this invention. It is a block diagram of the light projection system shown as 3rd Embodiment of this invention. It is a block diagram of the light projection system shown as 4th Embodiment of this invention. It is a block diagram of the light projection system shown as 5th Embodiment of this invention. It is a figure which shows the example of a display in the light projection system shown as 5th Embodiment of this invention, (a) shows drawing locus data, (b) shows the shape drawing data formed by drawing locus data. It is a block diagram of the light projection system shown as 6th Embodiment of this invention. It is a block diagram of the light projection system shown as 7th Embodiment of this invention. It is a block diagram of the light projection system shown as 8th Embodiment of this invention. It is a block diagram of the light projection system shown as 9th Embodiment of this invention. It is a block diagram which shows the other structure of the light projection system shown as 9th Embodiment of this invention. It is a block diagram of the light projection system shown as 10th Embodiment of this invention. It is a block diagram of the light projection system shown as 11th Embodiment of this invention. In the light projection system shown as 11th Embodiment of this invention, it is a perspective view which shows a mode that the illumination light is projected on the front surface of an object by the 1st light projection part, and the image | video is projected around the object. In the light projection system shown as 11th Embodiment of this invention, it is a perspective view which shows a mode that the 2nd light projection part projected the image | video only to the shadow area | region. It is a perspective view which shows a mode when an image | video is projected by the 2nd light projection part and the 1st light projection part in the light projection system shown as 11th Embodiment of this invention. It is a perspective view which shows a mode that the projection light was projected from the 1st light projection part in the light projection system shown as 11th Embodiment of this invention. In the light projection system shown as 11th Embodiment of this invention, it is a perspective view which shows a mode that the projection light was projected from the 2nd light projection part so that a shadow area might be erased. In the light projection system shown as 11th Embodiment of this invention, it is a perspective view which shows a mode that the shadow area | region has disappeared by projecting the projection light from the 2nd light projection part. It is a perspective view which shows a mode that the shadow area simulated by the 1st light projection part was projected in the light projection system shown as 11th Embodiment of this invention. It is a perspective view which shows a mode that the shadow area simulated by the 2nd light projection part was projected in the light projection system shown as 11th Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
The light projection system shown as the first embodiment is configured as shown in FIG. 5, for example. This light projection system projects light into an arbitrary space including an object. Illumination light is projected onto the object by the first light projection unit 3 that is an illumination light projection unit. The light projection system includes a light projection control device 1 and a second light projection unit 2 that is a light projection unit in order to erase the shadow generated by the operation of the first light projection unit 3. This light projection system can erase a generated shadow with a simple configuration.

  The second light projection unit 2 functions as a light projection unit that projects light using the projection light drawing data drawn by the projection light drawing unit 14 of the light projection control device 1. In the second light projection unit 2, the light projection control device 1 controls a projection range (hereinafter referred to as an illumination projection range) in which light similar to illumination is projected among the projection light. A projector can be used as the second light projection unit 2.

  The first light projection unit 3 emits illumination light to the object. In this example, a spotlight can be used as the first light projection unit 3. However, the light source is not limited to a spotlight, and any light source can be used, and a projector or the like may be used.

  Specifically, as shown in FIG. 6, the light projection system installs the second light projection unit 2 and the first light projection unit 3 at positions facing the object 101 and the wall 102. When the illumination light 3 a is emitted from the first light projection unit 3, the wall 102 behind the object 101 is irradiated with the illumination light 3 a and the illumination light 3 a is emitted from the object 101. A shadow region 102b formed by being blocked occurs.

  At this time, as shown in FIG. 7, the second light projection unit 2 projects the projection light 2a including the illumination projection range 2b having light characteristics similar to the illumination light 3a onto the shadow region 102b. For this purpose, the second light projection unit 2 projects light similar to the illumination light 3a at the corrected projection angle α that is narrower than the maximum projection range 2 ′ for projecting the projection light 2a at the projection angle θ. As a result, as shown in FIG. 8, a projection effect 2a including light similar to the illumination light 3a is projected onto the shadow region 102b, and a visual effect is provided such that the shadow disappears. Such a control operation of the second light projection unit 2 is performed by the light projection control device 1.

  As illustrated in FIG. 5, the light projection control device 1 includes a projection light data generation unit 11, a shadow region setting unit 12, a projection light data correction unit 13, and a projection light drawing unit 14.

  The projection light data generation unit 11 generates projection light data for specifying the projection light 2a. The projection light data generation unit 11 includes a playback device that reproduces a DVD, a hard disk device that stores various projection light data 11a, and the like. The projection light data generation unit 11 supplies the projection light data 11a to the projection light data correction unit 13 in accordance with a user operation or the like.

  Further, the projection light data generation unit 11 sets characteristic information for specifying the projection light projected onto the light irradiation region 102a and the non-projection light projected onto the light irradiation region 102a included in the projection light 2a. Specifically, the characteristic information includes elements including illuminance, luminance, luminous intensity, luminous flux, color temperature, and color rendering properties of projection light, and each element can be specified. Of the projection light 2a projected onto the shadow region 102b, the light projected onto the shadow region 102b desirably has a light characteristic similar to that of the illumination light 3a. In addition, it is desirable that the light projected on the light irradiation region 102 a has a light characteristic that does not affect the illumination light 3 a impinging on the wall 102. Then, the projection light data generation unit 11 generates the projection light data 11 a specified by the characteristic information and outputs it to the projection light data correction unit 13.

  The shadow area setting unit 12 specifies the shadow area 102b generated in the space. The shadow area setting unit 12 includes a memory or the like that stores shadow area data 12a for specifying the shadow area 102b. The shadow area data 12a is data representing an illumination projection range 2b in which light similar to the illumination light 3a is projected by coordinates in the maximum projection range 2 'of the second light projection unit 2. The shadow area setting unit 12 supplies the shadow area data 12a created in advance to the projection light data correction unit 13 as necessary.

  The projection light data correction unit 13 corrects the projection light data 11a so as to project light onto the shadow region 102b set by the shadow region setting unit 12. In other words, the projection light data correction unit 13 has a projection light trimming function for trimming the illumination projection range 2b in the projection light 2a in the set shadow area (shape). The projection light data correction unit 13 uses the projection light data 11a supplied from the projection light data generation unit 11 and the shadow region data 12a supplied from the shadow region setting unit 12 to resemble the illumination light in the illumination projection range 2b. To correct the projected light.

  The projection light data correction unit 13 performs a trimming process on the projection light data 11a in order to set the illumination projection range 2b. Specifically, the projection light data correction unit 13 determines the illumination projection range 2b that brightens the shadow region 102b in the projection light 2a. Then, only the portion corresponding to the illumination projection range 2b in the projection light 2a is set as the color and brightness of the projection light determined by the projection light data generation unit 11. On the other hand, the projection light data correction unit 13 sets a portion corresponding to a range other than the illumination projection range 2b in the projection light 2a as the color and luminance of the non-illumination light determined by the projection light data generation unit 11. The correction data of the projection light data 11a created in this way is supplied to the projection light drawing unit 14 as projection light correction data 13a.

  The projection light drawing unit 14 performs a drawing process of the projection light correction data 13 a generated by the projection light data correction unit 13. The projection light drawing unit 14 performs a drawing process using the projection light correction data 13 a supplied from the projection light data correction unit 13 and outputs the projection light drawing data 14 a to the second light projection unit 2. Thereby, the light projection control apparatus 1 drives the second light projection unit 2 by the projection light drawing data 14a.

  Specific examples of the light projection system are shown in FIGS. As shown in FIG. 9, in this light projection system, in addition to the first light projection unit 3, a shadow generated when the object 101 is irradiated with the illumination light 3a from the first light projection unit 3 is reflected in the illumination projection range 2b. The second light projection unit 2 is installed so that the projected light 2a can be projected. As shown in FIG. 10, when the illumination light 3a is irradiated from the first light projection unit 3 onto the object 101, a light irradiation region 102a and a shadow region 102b are generated on the wall 102 behind the object 101. On the other hand, as shown in FIG. 11, the projection light 2a trimmed to the shape of the shadow region 102b is projected from the second light projection unit 2 so as to erase the shadow region 102b. Thereby, as shown in FIG. 12, the light projection system can erase the shadow region 102b by the illumination projection range 2b of the projection light 2a.

  According to such a light projection system, it is possible to project the projection light 2a that brightens only the desired projection range in the maximum projection range 2 ′ by simply determining the illumination projection range 2b to be projected brightly in advance. .

  Further, according to this light projection system, light similar to the characteristics of the illumination light 3a is applied to the shadow region 102b generated when the illumination light 3a is projected from the first light projection unit 3. Project from. Thereby, according to the light projection system, it is possible to eliminate the luminance difference between the shadowed area and the area irradiated with the illumination light 3a while eliminating the shadow, and to reduce the uncomfortable feeling.

  In this light projection system, as shown in FIG. 13, when the space wall 102 and the object 101 are observed from an arbitrary viewpoint position E, the left end of the shadow region 102b in the figure is present on the wall surface 102 due to the presence of the object 101. A blind spot region 102d is generated in the region including the part. In such a situation, as shown in FIG. 14, the light projection system sets the illumination projection range 2b of the projection light 2a only for the region 102c obtained by removing the blind spot region 102d from the shadow region 102b. Thereby, the light projection system can erase the shadow of an arbitrary region with a minimum configuration without projecting unnecessary light. For example, when a light source composed of a plurality of LEDs is used as the second light projection unit 2 instead of a projector, it is not necessary to turn on the LED at the blind spot, thereby saving power.

  Further, in the light projection system, as shown in FIG. 15, when the object 101A and the object 101B exist, a part of the illumination light 3a emitted from the first light projection unit 3 is blocked by the object 101A, A scene in which the illumination light 3a is not irradiated onto the object 101B is assumed. On the other hand, as shown in FIG. 16, the second light projection unit 2 illuminates and projects the light similar to the illumination light 3 a to the shadow area 101 a that is not irradiated with the illumination light 3 a in the front surface of the object 101 B. The projection light 2a including the range 2b is projected. As described above, according to the light projection system, the projection light 2a can be projected so as to eliminate the shadow region 102b generated by the positional relationship of the object 101 in a situation where a plurality of objects 101 exist.

[Second Embodiment]
Next, an optical projection system according to the second embodiment will be described. In addition, about the part similar to the above-mentioned 1st Embodiment, the detailed description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  As shown in FIG. 17, the light projection system shown as the second embodiment is the first embodiment in that a projection light setting unit 15 that sets the light characteristic of the projection light 2 a is connected to the projection light data generation unit 11. Is different from the light projection system shown as

  The projection light setting unit 15 sets elements including illuminance, luminance, luminous intensity, luminous flux, color temperature, and color rendering properties of light projected onto the shadow region 102b in the projection light 2a. The projection light setting unit 15 sets, for example, the light characteristics of the illumination projection range 2b projected onto the shadow area 102b and the light characteristics of light projected outside the shadow area 102b out of the projection light 2a in accordance with the user's operation. The Alternatively, the illumination light 3a may be photographed, and the illumination projection range 2b may have light characteristics approximate to the illumination light 3a. Data representing the light characteristics of the illumination projection range 2b in the projection light 2a set by the projection light setting unit 15 is supplied to the projection light data generation unit 11 as projection light setting data 15a.

  The projection light data generation unit 11 generates the projection light data 11 a according to the projection light setting data 15 a supplied from the projection light setting unit 15. The projection light data generation unit 11 may generate new projection light data 11a according to the projection light setting data 15a, or may correct the prepared projection light data 11a according to the projection light setting data 15a. Thereby, the projection light data generation unit 11 can change the characteristics of the illumination projection range 2b projected onto the shadow area 102b and / or the characteristics of the light projected outside the shadow area 102b in the projection light 2a.

  According to such a light projection system, the light characteristic of the illumination projection range 2b in the projection light 2a can be set in accordance with the illumination light 3a generating the shadow region 102b. Thereby, the light projection system can erase the shadow region 102b with the uniform projection light 2a that is familiar with the illumination light 3a. Further, according to this light projection system, in the situation where both the illumination light 3a and the projection light 2a are projected, the elements of the illumination projection range 2b in the projection light 2a can be determined in real time while observing the projected state. Can change. Thereby, the light projection system can generate the projection light 2a including the illumination projection range 2b closer to the illumination light 3a.

[Third Embodiment]
Next, an optical projection system according to the third embodiment will be described. Note that parts similar to those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the light projection system shown as the third embodiment, the projection light data generation unit 11 further divides the shadow region 102b set by the shadow region setting unit 12, and specifies the characteristics of light to be projected for each of the divided shadow regions. The projection light data 11a is generated.

  In this light projection system, as shown in FIG. 18, the projection light data generation unit 11 outputs projection light data 11a for each range obtained by dividing the illumination projection range 2b in the shadow region 102b. The projection light data generation unit 11 outputs a plurality of projection light data 11a having different elements including illuminance, luminance, luminous intensity, luminous flux, color temperature, and color rendering properties of the projection light 2a as light characteristics. The plurality of projection light data 11a having different characteristics may be stored in advance, or may be generated by changing the characteristics by image processing of the projection light data generation unit 11.

  The shadow area setting unit 12 supplies the projection area data correction unit 13 with shadow area data 12a indicating each range obtained by dividing the shadow area 102b.

  The projection light data correction unit 13 corrects the projection light data generation unit 11 so that each of the plurality of ranges divided by the shadow area data 12a can be projected with different light, and the projection light correction data 13a is created.

  For example, it is assumed that the wall 102 on which the projection light 2 a and the illumination light 3 a are projected has different materials depending on the portion of the wall 102. Then, how the illumination light 3 a and the projection light 2 a projected onto the wall 102 appear varies depending on the portion of the wall 102. Therefore, in this case, the shadow region setting unit 12 generates a plurality of projection light data 11 a for each portion of the wall 102, and the projection light data correction unit 13 determines the portion of the wall 102. The projection light 2a is trimmed so as to be in the illumination projection range 2b corresponding to. Thereby, the light projection system can irradiate the uniform illumination light 3a and projection light 2a irrespective of the material of the wall 102 or the like.

  According to such a light projection system, the projection light data 11a is prepared for each enclosure into which the shadow region 102b is divided, and the desired projection light 2a is projected onto a plurality of ranges in the shadow region 102b. be able to. Thereby, the light projection system can erase a shadow more highly.

[Fourth Embodiment]
Next, an optical projection system according to the fourth embodiment will be described. Note that parts similar to those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 19, the light projection system shown as the fourth embodiment draws an arbitrary shape in accordance with a user operation, and includes the shape drawing unit 16 that generates the shape drawing data 16a. Is different. The shape drawing data 16 a generated by the shape drawing unit 16 is supplied to the shadow area setting unit 12. The shadow area setting unit 12 supplies the shadow area data 12 a to the projection light data correction unit 13 using the shape input by the shape drawing unit 16 as the shadow area 102 b.

  The shape drawing unit 16 is configured by a pen tablet system including a pointing device such as a mouse, a liquid crystal panel configured as a display unit of a monitor device, and a pen operated by a user. Here, it is desirable that the entire screen of the liquid crystal panel corresponds to the entire range of the maximum projection range 2 ′ of the second light projection unit 2.

  In the case of a pen tablet system, the shape drawing unit 16 generates trajectory information of writing pressure applied to the liquid crystal panel by the pen. This writing pressure trajectory information is supplied to the shadow area setting unit 12 as shape drawing data 16a and converted into shadow area data 12a representing the outline of the illumination projection range 2b projected onto the shadow area 102b (trimming area). The shadow region data 12a is supplied from the shadow region setting unit 12 to the projection light data correction unit 13, and the projection light data correction unit 13 corrects the projection light data 11a based on the shadow region data 12a to perform illumination projection. The range 2b can be changed. When the shape drawing unit 16 is a mouse, the illumination light 3a and the projection light 2a are actually projected on the wall 102 to form the light irradiation region 102a and the shadow region 102b, while moving the mouse. The illumination projection range 2b of the projection light 2a can be changed.

  According to such a light projection system, the user operates the shape drawing unit 16 and designates the contour of the desired shadow region 102b, and the desired projection within the maximum projection range 2 ′ of the second light projection unit 2 is achieved. It is possible to project the projection light 2a in which only the illumination projection range 2b is light similar to the illumination light 3a.

  That is, in the existing trimming illumination, a mask (light-shielding plate) prepared in advance is placed in front of the projection lens of the second light projection unit 2 or the projection light is corrected by image correction (masking) with a mask shape designated in advance. Trimming (correction of the shadow region 102b) was realized. However, according to the light projection system to which the present invention is applied, it is possible to set the illumination projection range 2b so as to draw a picture on the spot while actually looking at the shadow region 102b. Projection operation and correction work can be realized.

  In this light projection system, when the pen tablet system is used, the shadow area setting unit 12 may be configured to write the outline of the shadow area 102b directly on the liquid crystal panel, but this is not a limitation. . For example, a base shape (a circle, an ellipse, a square, a polygon, a star shape, etc.) created in advance may be arranged at an arbitrary location, and the shadow region 102b may be set. The shadow region 102b may be set by changing. Examples of the shape change include deformation between a circle and an ellipse, and deformation between a square and a rectangle.

  Further, in this light projection system, when the user designates the shadow region 102b by the shape drawing unit 16, the groping point is displayed on the liquid crystal panel in response to the operation of the shape drawing unit 16, or the second light projection unit 2 May emit light corresponding to the groping point. For example, when it is desired to accurately specify the upper left end portion of the shadow region 102b, the second light projection is performed so as to illuminate the position within the maximum projection range 2 ′ corresponding to the arbitrary point when the shape drawing unit 16 is arbitrarily touched. The unit 2 is operated. Thereby, the light projection system can perform an operation of designating the shadow region 102b more easily.

  As described above, according to this light projection system, since the shadow region 102b is configured with a shape arbitrarily designated by the shape drawing unit 16, the illumination projection range 2b can be set intuitively as if drawing a picture. .

[Fifth Embodiment]
Next, an optical projection system according to the fifth embodiment will be described. Note that parts similar to those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the light projection system shown as the fifth embodiment, as shown in FIG. 20, the shape drawing unit 16 generates drawing locus data 16b composed of continuous position data drawn in accordance with a user operation, and the drawing locus data 16b is output to the projection light drawing unit 14 in real time. The shadow area setting unit 12 updates the shadow area 102b based on the output shape drawing data 16a. At the same time, the projection light data correction unit 13 performs a drawing process according to the drawing locus data 16 b and causes the second light projection unit 2 to display a locus designated by the user. Thereby, the light projection system adds a follow-up function for updating the illumination projection range 2b corresponding to the trimming region (shadow region 102b) in terms of time.

  The shadow area setting unit 12 sets a range corresponding to the shadow area 102b based on the output shape drawing data 16a, and projects the projection light 2a from the second light projection unit 2 in real time. Projecting the projection light 2a in real time means that the shape drawing unit 16 outputs the shape drawing data 16a to the shadow region setting unit 12 every time the shadow region 102b designated by the user is updated or every predetermined time. The shadow region setting unit 12 updates the shadow region 102b. As a result, the drawing trajectory of the shadow region 102b input by the user is immediately reflected in the projection light 2a. The user can specify the illumination projection range 2b by drawing the locus of the shadow region 102b while confirming the projection light 2a projected on the wall 102.

  At the same time, the projection light drawing unit 14 projects the projection light 2 a indicating the locus of the shadow region 102 b specified by the user based on the drawing locus data 16 b supplied from the shape drawing unit 16. Thereby, the user can specify the shadow region 102b while confirming the locus.

  As described above, according to the light projection system shown as the fifth embodiment, the drawing trajectory data 16b is generated and displayed in real time according to the user's operation, and the illumination projection range 2b corresponding to the shadow region 102b is displayed. Can be updated. Further, the light projection system converts the drawing trajectory by the user operation into the illumination projection range 2b for the shadow area 102b set by the shadow area setting unit 12, so that the user can confirm the state of irradiation on the actual shadow area 102b. The illumination projection range can be set.

  As shown in FIG. 21, the shape drawing unit 16 outputs the drawing locus data 16b as shown in FIG. 21 (a) while the user is drawing the locus of the shadow region 102b. The shape drawing data 16a may be output when an area closed by the drawing locus is set as in b). Thereby, when the closed area is not set by the drawing locus, the drawing locus is projected by the diagram, and when the closed area is set by the drawing locus, the entire closed area is set as the shadow area 102b. can do.

[Sixth Embodiment]
Next, an optical projection system according to the sixth embodiment will be described. Note that parts similar to those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The light projection system shown as the sixth embodiment includes the shadow target region adjustment unit 17 that adjusts the position and shape of the shadow region set by the shadow region setting unit 12, as shown in FIG. Different from form.

  The shadow target area adjustment unit 17 receives the shadow area data 12 a from the shadow area setting unit 12. The shadow target area adjustment unit 17 supplies the projection light data correction unit 13 with the shadow area adjustment data 17a in which the position and shape of the shadow area 102b set by the input shadow area data 12a are adjusted. When the shadow area adjustment data 17a is supplied, the projection light data correction unit 13 changes the illumination projection range 2b in the projection light 2a according to the adjusted result. Thereby, the light projection system can adjust at least one of the position and the shape of the shadow region 102b set in the shadow region data 12a. The shadow target area adjustment unit 17 may change the illumination projection range 2b corresponding to the shadow area 102b set by the shadow area setting unit 12 according to a user operation, or may change it automatically.

  As described above, according to the light projection system, even if the shadow region 102b is set by the shadow region setting unit 12, the position and shape of the shadow region 102b can be easily corrected. For example, when the shadow area 102b set by the shadow area setting unit 12 deviates from the actual one, fine adjustment of the shadow area 102b can be easily performed. Further, even when the shadow region 102b is shifted as a result of fine adjustment of the positions of the object 101, the second light projection unit 2, and the first light projection unit 3, the position and shape of the shadow region 102b can be easily adjusted. Fine adjustments can be made.

[Seventh Embodiment]
Next, an optical projection system according to the seventh embodiment will be described. Note that parts similar to those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 23, the light projection system shown as the seventh embodiment is different from the light projection system described above in that it includes a luminance adjustment unit 18 connected to the projection light data correction unit 13.

  This light projection system projects the projection light so that the illumination projection range 2b in the projection light 2a projected from the second light projection unit 2 and the surrounding illumination light 3a generating the shadow region 102b overlap with an arbitrary width. The data correction unit 13 enlarges the shadow area set by the shadow area setting unit 12. Further, the light projection system uses the brightness adjustment unit 18 to make the brightness of the projection light 2a projected by the brightness data 11a so that the brightness becomes uniform near the boundary of the overlapping area of the enlarged projection light 2a. Adjust (blending function).

  The projection light data correction unit 13 stores an area for specifying the enlarged portion of the projection light 2a with respect to the shadow area data 12a set by the shadow area setting unit 12. This area becomes the projection light 2a overlapping the illumination light 3a. When the projection light data correction unit 13 projects the projection light 2a from the second light projection unit 2 onto the shadow region 102b, the luminance adjustment of the portion corresponding to the enlarged region of the illumination projection range 2b is performed. I do.

  At this time, the brightness adjusting unit 18 calculates, for example, the distance between the second light projecting unit 2 and the wall 102 where the illumination projection range 2b of the projection light 2a and the overlapping region of the illumination light 3a are formed. It is assumed that the closer the distance between the second light projection unit 2 and the overlapping region is, the higher the luminance in the overlapping region is. The higher the luminance increase rate of the illumination projection range 2b when the projection light 2a is projected from the second light projection unit 2, the lower the luminance of the overlapping area in inverse proportion to the luminance increase rate. Adjust the brightness. At this time, the luminance of the illumination projection range 2b in the projection light 2a may be obtained by an arithmetic expression. Alternatively, the luminance of the illumination projection range 2b may be changed so that the luminance at the end portion is gradually lowered from the central portion of the shadow region 102b in the luminance map representing the luminance distribution in the overlapping region.

  According to this light projection system, since the shadow region 102b set by the shadow region setting unit 12 is enlarged, it is possible to avoid a gap where the projection light 2a is not projected on the shadow region 102b. Moreover, according to this light projection system, even if the projection light 2a overlaps with the illumination light 3a by enlarging the shadow region 102b, the luminance at the overlap portion can be adjusted. Thereby, according to this light projection system, it is possible to perform luminance correction so as to avoid that the overlapping region has a higher luminance than the light irradiation region 102a onto which the other illumination light 3a is projected. Thereby, the light projection system can suppress the uneven brightness on the wall 102 to obtain uniform brightness.

[Eighth Embodiment]
Next, an optical projection system according to the eighth embodiment will be described. Note that parts similar to those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The light projection system shown as the eighth embodiment differs from the light projection system in the above-described embodiment in that it includes a drive unit 19 that vibrates the second light projection unit 2 as shown in FIG.

  In the light projection system that does not include the drive unit 19, the outline of the illumination projection range 2b in the projection light 2a is clear. Therefore, when the illumination projection range 2b of the projection light 2a does not cover the entire shadow region 102b, a gap is visually recognized between the projection light 2a and the shadow region 102b. When a part of the illumination projection range 2b of the projection light 2a overlaps with the illumination light 3a, luminance unevenness may occur in the overlapped part. On the other hand, the light projection system shown as the eighth embodiment includes the drive unit 19 to make the gap and the overlap inconspicuous.

  This light projection system applies minute vibrations to the second light projection unit 2. The vibration width of the second light projection unit 2 by the drive unit 19 is desirably adjusted by the distance between the second light projection unit 2 and the wall 102, the accuracy of the shadow region 102b by the shadow region setting unit 12, and the like. By vibrating the second light projection unit 2 in this way, the illumination projection range 2b of the projection light 2a can also be vibrated, and the outline of the illumination projection range 2b by the projection light 2a can also be blurred.

[Ninth Embodiment]
Next, an optical projection system according to the ninth embodiment will be described. Note that parts similar to those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 25, the light projection system shown as the ninth embodiment includes a plurality of projectors as light projection units, and projects the projection light 2a onto the shadow region 102b by the second light projection units 2 and 2 ′. This is different from the above-described embodiment.

  The plurality of second light projection units 2 project the projection light 2 a onto the shadow region 102 b that is larger than the maximum projection range 2 ′ of each second light projection unit 2. At this time, the projection light 2a projected from the second light projection unit 2 is projected onto a part of the shadow region 102b. Similarly, the projection light 2a projected from the second light projection unit 2 'is projected onto the remaining part of the shadow region 102b. Further, the plurality of second light projection units 2 can also project the projection light 2a onto different shadow regions 102b.

  Such a light projection system is a so-called multi-projection technique. By providing the plurality of second light projection units 2 and 2 ′, it is possible to project the plurality of projection lights 2 a onto the shadow region 102 b. Accordingly, the light projection system can project the projection light 2a in the wider illumination projection range 2b onto the shadow region 102b as compared with the case where the single second light projection unit 2 projects the projection light 2a.

  In this light projection system, the light projection control device 1 includes a projection light data generation unit 11 that generates projection light data 11a and 11a ′ corresponding to the second light projection units 2 and 2 ′, and a second light projection unit 2 and 2 ′. Projection light data correction unit 13 that generates projection light correction data 13a and 13a 'corresponding to 2', and projection light drawing unit that generates projection light drawing data 14a and 14a 'corresponding to second light projection units 2 and 2'. 14 is provided. The shadow area setting unit 12 sets a shadow area 102b for projecting the projection light 2a for each of the second light projection units 2 and 2 '. The shadow area setting unit 12 projects each second light projection based on the installation position of each second light projection unit 2, 2 ′, the position of the shadow region 102 b, the projection angle of each second light projection unit 2, 2 ′, etc. The shadow area 102b for projecting the projection light 2a is set by the units 2 and 2 ′. Note that the shadow region setting unit 12 may set the shadow region 102b of each of the second light projection units 2 and 2 'according to a user operation or the like as described in the above-described embodiment.

  The projection light data correction unit 13 is supplied with shadow area data 12a and 12a ', respectively, and corrects the projection light data 11a and 11a' based on the shadow area data 12a and 12a '. The projection light drawing unit 14 performs a drawing process using the projection light correction data 13a and 13a ′ corrected by the projection light data correction unit 13, and outputs the projection light drawing data 14a and 14a ′ to the second light projection unit 2, 2 '.

  As described above, according to the light projection system, the plurality of second light projection units 2 can project the projection light 2a from various directions onto the shadow region 102b and erase the shadow region 102b. In addition, this light projection system has a plurality of first light projection units 3 even when there are a large number of shadow regions 102b or a large number of shadow regions 102b. The two-light projection unit 2 can erase the large number or a wide range of the shadow region 102b.

  Further, as shown in FIG. 26, the light projection system shown as the ninth embodiment includes a plurality of light projection control devices 1 and 1 ′ corresponding to the second light projection units 2 and 2 ′. Also good. A synchronization device 4 is connected to the light projection control devices 1 and 1 ′. The synchronization device 4 synchronizes the output timings of the projection light drawing data 14a and 14a 'output from the light projection control devices 1 and 1'. Thereby, the light projection system can output the synchronized projection light 2a from the second light projection units 2 and 2 '.

[Tenth embodiment]
Next, an optical projection system according to the tenth embodiment will be described. Note that parts similar to those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The light projection system shown as the tenth embodiment automatically extracts the shadow region 102b and projects the projection light 2a onto the shadow region 102b. As shown in FIG. 27, the light projection system includes an imaging unit 20, a captured image generation unit 21, a captured image storage unit 22, a conversion table generation unit 23, a shadow region extraction setting unit 24, a shadow region extraction unit 25, a pixel position. The point which is provided with the conversion part 26 differs from embodiment mentioned above.

  This light projection system includes a video camera as the photographing unit 20. The imaging unit 20 is installed such that its imaging range includes the maximum projection range 2 ′ of the second light projection unit 2. The imaging unit 20 includes an imaging device such as an optical system and a CCD. The imaging unit 20 supplies the captured image signal captured by the imaging element to the captured image generation unit 21.

  The captured image generation unit 21 includes an I / O interface for the imaging unit 20. The captured image generation unit 21 converts the captured image signal output from the imaging unit 20 into a processable data format, generates captured image data 21a, and supplies the captured image data 21a to the captured image storage unit 22.

  The captured image storage unit 22 is composed of, for example, a hard disk device. The captured image storage unit 22 stores the captured image data 21 a generated by the captured image generation unit 21. The captured image data 21a stored in the captured image storage unit 22 may be output to a display (not shown) so that the imaging state of the imaging unit 20 can be viewed. The captured image data 21 a stored in the captured image storage unit 22 is read by the shadow area extraction unit 25 and the conversion table generation unit 23.

  The conversion table generation unit 23 is supplied with the captured image data 21 a generated by the captured image generation unit 21 and stored in the captured image storage unit 22. The conversion table generation unit 23 generates a conversion table 23a that describes the correspondence between the image position in the captured image data 21a and the position of the projection light 2a projected by the second light projection unit 2. The position of the projection light 2a corresponds to the light emission position of the second light projection unit 2. Referring to the conversion table 23 a, the light projection system projects from which light emission position in the second light projection unit 2 the image position of the captured image data 21 a captured by the photographing unit 20 and generated by the captured image generation unit 21. You can recognize if you can.

  The conversion table generation unit 23 performs the following operation when generating the conversion table 23a. This operation is performed when the object 101 is newly installed. At this time, the projection light 2a is projected from the second light projection unit 2 including the color portion at a specific position in the maximum projection range 2 '. In this state, when the imaging unit 20 captures an area including the maximum projection range 2 ′, a captured image including the color part can be acquired in the captured image. Then, the relationship between the position in the image of the projection image including the color portion and the position in the image of the captured image including the color portion is obtained. If this operation is repeated a plurality of times, the conversion table generation unit 23 can create a conversion table indicating the relationship between the light emission position of the second light projection unit 2 and the imaging pixels. Further, in this conversion table, the image obtained by converting the pixel position of the captured image data in the reverse direction coincides with the light emission position of the second light projection unit 2.

  In the relationship between the projected image and the captured image, the correspondence relationship between the pixel positions may be detected for each pixel, may be detected by a lump or line of pixels in which a certain number of pixels are integrated, or discrete. The pixels may be interpolated after detecting the correspondence between the pixels at specific positions.

  The shadow area extraction setting unit 24 sets conditions for extracting the shadow area 102b. The shadow region extraction setting unit 24 analyzes the captured image data 22a stored in the captured image storage unit 22 and sets conditions for extracting the shadow region 102b. The shadow area extraction setting unit 24 extracts, for example, an extraction method such as approximate color extraction for extracting the shadow area 102b by color, shape extraction for extracting the shadow area 102b by shape, and brightness extraction for extracting the shadow area 102b by brightness, and the like. Set the threshold value in the method.

  The shadow area extraction setting unit 24 includes, for example, a keyboard operated by the user and an input interface for recognizing the keyboard operation, a mechanism for reading a recording medium storing various parameters, a mechanism for receiving various parameters transmitted from the outside, and the like. Consists of. The extraction condition of the shadow region 102b set by the shadow region extraction setting unit 24 is supplied to the shadow region extraction unit 25 as extraction setting data 24a.

  The shadow region extraction unit 25 analyzes the captured image data 22a according to the conditions set by the shadow region extraction setting unit 24, and extracts the shadow region 102b. The shadow area extraction unit 25 supplies the pixel position conversion unit 26 with shadow area extraction data 25a as coordinate information of the captured image representing the shadow area 102b that matches the extraction setting condition.

  The pixel position conversion unit 26 is supplied from the shadow region extraction unit 25 with shadow region extraction data 25a indicating which coordinate position in the captured image is the shadow region 102b. The pixel position conversion unit 26 reads the conversion table 23 a generated by the conversion table generation unit 23. The pixel position conversion unit 26 recognizes which second light projection unit 2 is the light emission position of the shadow region 102b in the captured image indicated by the shadow region extraction data 25a with reference to the conversion table 23a. That is, the pixel position conversion unit 26 converts a pixel indicating the shadow region 102b in the captured image into a light emission position. The pixel position conversion unit 26 generates pixel position conversion data 26 a including the converted light emission position, and supplies the pixel position conversion data 26 a to the shadow region setting unit 12. Accordingly, in the light projection system, the shadow region setting unit 12 sets the light emission position converted by the pixel position conversion unit 26 as the shadow region 102b.

  As described above, according to the light projection system shown as the tenth embodiment, the light output position of the second light projection unit 2 corresponding to the shadow region 102b included in the captured image is analyzed by analyzing the captured image. Can be requested. Thereby, according to the light projection system, if the shadow region 102b is automatically extracted by the shadow region extraction unit 25, the light emission position of the second light projection unit 2 is changed to the illumination projection range 2b by the pixel position conversion unit 26. Then, it can be automatically extracted whether the shadow area 102b can be erased.

  Further, according to the light projection system, the automatic extraction process of the shadow region 102b is updated every predetermined time so that the illumination projection range 2b can be tracked in response to changes over time such as movement and deformation of the object 101. be able to. Further, the illumination projection range 2b is changed in response to the change of the shadow region 102b in accordance with the position adjustment of the first light projection unit 3. In other words, in the light projection system, in the configuration described above, the shadow region extraction unit 25 detects a change with the passage of time including movement or deformation of the object 101, and the change of the object 101 detected by the shadow region extraction unit 25 is detected. In response to this, the illumination projection range 2b is changed.

[Eleventh embodiment]
Next, an optical projection system according to the eleventh embodiment will be described. Note that parts similar to those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The light projection system shown as the eleventh embodiment erases the shadow region 102b using video data. As shown in FIG. 28, the light projection system includes a light projection control device 1 including a video data generation unit 27, a video data correction unit 28, and a video drawing unit 29. The video data generation unit 27, the video data correction unit 28, and the video drawing unit 29 are the same as the projection light data generation unit 11, the projection light data correction unit 13, and the projection light drawing unit 14 described above except that the video data is processed. It has a function. Further, the light projection system includes a video projection unit 30. The video projection unit 30 has the same function as the second light projection unit 2 except that it projects video.

  In this light projection system, the projection light data 11a is changed to video data 27a representing a video. The shadow area setting unit 12 sets a shadow area 102 b formed when a video is projected from the video projection unit 30. The video data correction unit 28 corresponding to the projection light data correction unit 13 is projected onto the shadow region 102b so that the video projected onto the shadow region 102b and the video projected around the shadow region 102b are connected. Correct the image. The video drawing unit 29 corresponding to the projection light drawing unit 14 performs correction processing of the video data corrected by the video data correction unit 28, and the video projection unit 30 projects the video onto the shadow region 102b.

  Such a light projection system supplies the second light projection unit 2 so that the image projected by the second light projection unit 2 is connected to the image projected by the first light projection unit 3. It is necessary to correct the video data. At this time, the light projection system corrects the image so that the image is superimposed on the overlapping portion of the image projected by the first light projection unit 3 and the image projected on the shadow region 102b by the second light projection unit 2. The method can be adopted. This technique can employ a technique in which a single image is composed of partial images projected from a plurality of light sources by a so-called multi-projection method.

  Specifically, the second light projection unit 2 and the first light projection unit 3 are configured as a plurality of projectors. Then, parameters such as the installation position of each projector, the installation position of the wall 102, a predetermined viewpoint position for viewing an image, and the projection angle of the projector are acquired. With these parameters, it is possible to calculate how the video looks distorted from a predetermined viewpoint position when the video is projected from each projector. That is, how the image projected from the first light projection unit 3 onto the light irradiation region 102a looks distorted and how the image projected from the second light projection unit 2 onto the shadow region 102b is calculated. Calculate whether it looks distorted. The video supplied to each projector is subjected to distortion correction processing so that the video is not distorted when viewed from a specific viewpoint. Thus, even when images are projected from the second light projecting unit 2 and the first light projecting unit 3, the images can be viewed from the predetermined viewpoint position without distortion. Note that this distortion correction processing can also be applied to a case where an image is projected on a non-planar surface as in the case of the wall 102.

  In addition, where the video supplied to each projector is adjacent, both videos are overlapped. It is desirable to adjust the luminance of the overlapping portion of the video so that the luminance does not become higher than that of the other video.

  Specific examples when the illumination light 3a and the projection light 2a of the image are projected by such an optical projection system are shown in FIGS. In this example, the first light projection unit 3 projects illumination light on the front surface of the object 101 ′ and projects an image around the object 101 ′. Then, behind the object 101 ′, a shadow area 102 b where no image is projected is generated as shown in FIG. 29. On the other hand, as shown in FIG. 30, the second light projection unit 2 projects an image only on the shadow region 102b. At this time, the shadow area setting unit 12 supplies the shadow area data 12 a to the video data correction unit 28. The video data correction unit 28 trims the video data generated by the video data generation unit 27 and corrects the outline of the video to the shape of the shadow region 102b. In addition, the video data correction unit 28 corrects the video so as to be continuously connected to the video of the illumination light 3a. Then, the video drawing unit 29 performs a drawing process using the corrected video correction data 28 a and causes the video projection unit 30 to project the video. Thereby, as shown in FIG. 31, the light projection system can project the projection light 2a onto the shadow region 102b, erase the shadow region 102b, and project an image on the entire surface of the wall 102. .

  In addition, this light projection system can erase the shadow region 102b generated by the illumination light 3a projected by the first light projection unit 3 and project an arbitrary shadow as an image. For example, as shown in FIG. 32, even if the shadow region 102b is generated by projecting the illumination light 3a from the first light projection unit 3, the projection light 2a is projected from the second light projection unit 2 as shown in FIG. To do. As a result, as shown in FIG. 34, the shadow region 102b can be erased.

  At this time, the second light projection unit 2 projects an image having a color and brightness imitating a shadow. Thereby, the light projection system can generate the shadow region 102b 'as shown in FIG. In addition, as shown in FIG. 36, the light projection system can generate a shadow region 102 b ″ by projecting an image having a color and brightness imitating a shadow by the first light projection unit 3.

  The above-described embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and various modifications can be made depending on the design and the like as long as the technical idea according to the present invention is not deviated from this embodiment. Of course, it is possible to change.

DESCRIPTION OF SYMBOLS 1 Light projection control apparatus 2 2nd light projection part 2a Projection light 2b Illumination projection range 3 1st light projection part 3a Illumination light 4 Synchronizer 11 Projection light data generation part 12 Shadow area setting part 13 Projection light data correction | amendment part 14 Projection light Drawing unit 15 Projection light setting unit 16 Shape drawing unit 17 Shadow target region adjustment unit 18 Brightness adjustment unit 19 Drive unit 20 Imaging unit 21 Captured image generation unit 22 Captured image storage unit 23 Conversion table generation unit 24 Shadow region extraction setting unit 25 Shadow Area extraction unit 26 Pixel position conversion unit 27 Video data generation unit 28 Video data correction unit 29 Video drawing unit 30 Video projection unit

Claims (11)

An optical projection apparatus that projects light onto an arbitrary space including an object,
A shadow region setting means for identifying a shadow region occurring in the space;
Projection light data generating means for generating projection light data for specifying the projection light;
Projection light data correction means for correcting the projection light data so as to project light onto the shadow area set by the shadow area setting means;
Projection light drawing means for performing drawing processing of the projection light correction data generated by the projection light data correction means;
An optical projection apparatus comprising: light projection means for projecting light using projection light drawing data drawn by the projection light drawing means.   The light projection apparatus according to claim 1, wherein the projection light data generation unit includes a projection light setting unit that sets elements including illuminance, luminance, luminous intensity, luminous flux, color temperature, and color rendering properties of the projection light. . The projection light data generation means further divides the shadow area set by the shadow area setting means,
The light projection apparatus according to claim 1, wherein projection light data specifying a characteristic of light to be projected is generated for each of the divided shadow areas. A shape drawing unit for drawing an arbitrary shape according to a user operation and generating shape data,
4. The light projection device according to claim 1, wherein the shadow area setting unit sets the shape input by the shape drawing unit as a shadow area. 5. The shape drawing means generates drawing trajectory data composed of continuous position data drawn in accordance with a user operation, and outputs the drawing trajectory data to the shadow area setting means in real time.
The light projection apparatus according to claim 4, wherein the projection light drawing unit draws the locus based on the output drawing locus data.   The light projection apparatus according to claim 1, further comprising a shadow target region adjusting unit that adjusts a position and a shape of the shadow region set by the shadow region setting unit.   The shadow area set by the shadow area setting means is enlarged so that the projection light projected from the light projection means and the ambient light generating the shadow overlap with an arbitrary width, and the enlarged projection 7. The light projection according to claim 6, further comprising brightness adjusting means for adjusting the brightness of the projection light projected by the projection light data so that the brightness becomes uniform near the boundary of the overlapping area of the light. apparatus.   8. The light projection apparatus according to claim 1, further comprising a drive unit that vibrates the light projection unit. A plurality of the light projection means;
The light projection apparatus according to claim 1, wherein each light projection unit projects projection light onto the shadow area. An imaging unit having a space including the shadow area as an imaging range;
Captured image generation means for generating captured image data imaged by the imaging means;
Captured image storage means for storing the captured image data;
Conversion table generation means for generating a conversion table in which the position of the projection light projected from the light projection means is associated with the pixel position of the captured image data;
Shadow region extraction setting means for setting conditions for extracting the shadow region;
A shadow region extraction unit that analyzes the captured image data stored by the captured image storage unit and extracts a shadow region according to the conditions set by the shadow region extraction setting unit;
The pixel position of the captured image data extracted as the shadow area by the shadow area extraction unit is converted into the position of the projection light projected from the light projection unit using the conversion table generated by the conversion table generation unit. Pixel position conversion means,
The light projection device according to claim 1, wherein the shadow region setting unit sets the position of the projection light converted by the pixel position conversion unit as a shadow region. . The projection light data is video data representing a video,
The shadow area setting means sets a shadow area formed when a video is projected,
The projection light data correction unit corrects the image projected on the shadow region so that the image projected on the shadow region and the image projected on the periphery of the shadow region are connected.
The projection light drawing means performs a correction process of the video data corrected by the projection light data correction means,
The light projection device according to any one of claims 1 to 10, wherein the light projection unit projects an image onto the shadow region.

Images