WO2017098542A1 - Dispositif de génération d'image omnidirectionnelle, procédé de génération d'image omnidirectionnelle et programme de génération d'image omnidirectionnelle - Google Patents

Dispositif de génération d'image omnidirectionnelle, procédé de génération d'image omnidirectionnelle et programme de génération d'image omnidirectionnelle Download PDF

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Publication number
WO2017098542A1
WO2017098542A1 PCT/JP2015/006177 JP2015006177W WO2017098542A1 WO 2017098542 A1 WO2017098542 A1 WO 2017098542A1 JP 2015006177 W JP2015006177 W JP 2015006177W WO 2017098542 A1 WO2017098542 A1 WO 2017098542A1
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Prior art keywords
omnidirectional image
vertex
image generation
medium
sheet
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PCT/JP2015/006177
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English (en)
Japanese (ja)
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光雄 林
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光雄 林
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Priority to JP2017554665A priority Critical patent/JP6762677B2/ja
Priority to PCT/JP2015/006177 priority patent/WO2017098542A1/fr
Publication of WO2017098542A1 publication Critical patent/WO2017098542A1/fr

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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
    • A63H33/00—Other toys
    • A63H33/16—Models made by folding paper
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformations in the plane of the image

Definitions

  • the present invention relates to an omnidirectional image generation apparatus, an omnidirectional image generation method, and an omnidirectional image generation program.
  • an omnidirectional image a planar image on a sheet-like medium made of paper, cloth, plastic, or the like (hereinafter referred to as an omnidirectional image) that covers an omnidirectional background of an operator or an observer It is necessary to perform coordinate conversion from 3D coordinates to 2D coordinates.
  • Examples of the conversion method from the three-dimensional coordinates to the two-dimensional coordinates include an equirectangular projection and a method using a three-dimensional development view.
  • images using equirectangular projection include photographing with a dedicated omnidirectional digital camera (for example, THETA (registered trademark) manufactured by Ricoh Co., Ltd.) and computer graphics images provided by volunteers (for example, , Skydome, etc.). Note that the images themselves obtained by these methods are two-dimensional planes, but can be displayed on a spherical model or a computer display device as a background image by using dedicated software.
  • a dedicated omnidirectional digital camera for example, THETA (registered trademark) manufactured by Ricoh Co., Ltd.
  • computer graphics images provided by volunteers
  • a three-dimensional object to which the omnidirectional image is applied is preferably a three-dimensional object having few depressions and protrusions, and for example, a shape close to a sphere like an earth globe is ideal.
  • JP 2012-73766 A Utility Model Registration No. 3089936 JP 2002-332162 A JP 2003-33569 A JP-A-5-342313
  • origami for the field of origami with an infinite number of shapes, omnidirectional images are applied so that the three-dimensional continuity, that is, the surfaces are continuous and the images are continuous on all adjacent surfaces. This has not been assumed conventionally.
  • origami since normal origami is square, it may start to be folded in a state rotated by 90 degrees or 180 degrees, but when using origami on which an image is printed, by starting folding from an unexpected direction, The image layout may not be correct when completed.
  • the degree of freedom of shape is higher than that of origami, for example, a development view for working a three-dimensional object close to a sphere such as a truncated icosahedron, and generation of an omnidirectional image suitable for it Has been implemented conventionally.
  • origami for example, a development view for working a three-dimensional object close to a sphere such as a truncated icosahedron, and generation of an omnidirectional image suitable for it has been implemented conventionally.
  • the closer to the sphere the more complicated the shape of the developed view tends to become, and tools and labor are required in the process of the work after image printing.
  • the present invention has been made in view of such a situation, and an object of the present invention is to provide an omnidirectional image generation apparatus and an omnidirectional image generation apparatus capable of generating an omnidirectional image suitable for origami that can be easily worked.
  • An image generation method and an omnidirectional image generation program are provided.
  • the omnidirectional image generation apparatus is a three-dimensional object that is completed by folding a sheet-like medium from an original omnidirectional image according to a predetermined folding order.
  • An omnidirectional image generation apparatus for generating an omnidirectional image formed on a surface, wherein a central control unit and a surface corresponding to the surface of the three-dimensional object are formed in a three-dimensional space of the original omnidirectional image
  • a vertex setting unit for providing a vertex group
  • a storage unit for storing coordinate information in which a vector representing a direction from the origin of the three-dimensional space for each vertex and a positional coordinate on the sheet-like medium are associated with each other,
  • the central control unit generates pixel information located in each plane based on the coordinate information read from the storage unit.
  • the omnidirectional image generation method is formed on the surface of a three-dimensional object completed by folding a sheet-like medium according to a predetermined folding order from the original omnidirectional image.
  • a generating method for generating an omnidirectional image, a vertex setting step of providing a vertex group constituting a surface corresponding to the surface of the three-dimensional object in the three-dimensional space of the original omnidirectional image, and for each vertex An association step for associating a vector representing the direction from the origin of the three-dimensional space with the position coordinates on the sheet-like medium, and generating pixel information located in each plane based on the coordinate information associated with each vertex. And a generation process.
  • the omnidirectional image generation program provides a computer with a group of vertices constituting a surface corresponding to the surface of the three-dimensional object in the three-dimensional space of the original omnidirectional image.
  • a vector representing the direction from the origin of the three-dimensional space is associated with the position coordinates on the sheet-like medium, and pixel information located in each plane is generated based on the coordinate information associated with each vertex.
  • an omnidirectional image generation apparatus an omnidirectional image generation method, and an omnidirectional image generation program capable of realizing generation of an omnidirectional image suitable for origami that can be easily worked.
  • (B) It is an example of the original omnidirectional image whose image format is a development view of an icosahedron. It is a figure explaining the vertex group which comprises the surface set to the three-dimensional space of the original omnidirectional image which concerns on one Embodiment of this invention. It is a figure explaining the position coordinates of the vertex on the origami before work concerning one embodiment of the present invention. It is a figure explaining the production
  • (B) It is the figure which showed the origami balloon completed by folding the printed origami according to the predetermined folding order.
  • (A) It is a figure explaining the state which printed the omnidirectional image after conversion on square origami.
  • B) It is the figure which showed the origami balloon completed by folding the printed origami according to the predetermined folding order.
  • (A) It is a figure explaining the state which printed the omnidirectional image after conversion on square origami.
  • (B) It is the figure which showed the origami balloon completed by folding the printed origami according to the predetermined folding order.
  • origami balloon generation of an omnidirectional image suitable for a traditional origami “balloon” (hereinafter referred to as an origami balloon), which is one of the final three-dimensional shapes of origami, will be described.
  • origami balloons are completed by folding a sheet-like medium made of square paper in a predetermined procedure, and in that process, it is not necessary to cut the sheet-like medium with scissors or to bond it with an adhesive or the like.
  • the shape at the time of completion of an origami balloon contains a part of a hollow and protrusion, but the whole becomes rounder than a general cube.
  • the original planar shape corresponding to the completed surface of the origami balloon is a shape unique to origami unlike the general development of a three-dimensional object.
  • an origami balloon is regarded as a cube, there are places (in this case, a portion where a square is separated into a plurality of triangles) different from a developed view of a normal cube.
  • there are also portions that do not appear on the surface when the origami balloon is completed overlapping portions or portions facing back). Note that these elements are factors that make it difficult to generate an omnidirectional image, unlike shapes such as intentional developments and glue margins in paper craft.
  • FIG. 1 is a block diagram illustrating a configuration of an omnidirectional image generation apparatus 1 according to an embodiment of the present invention.
  • the omnidirectional image generation apparatus 1 includes a personal computer 10, a display device 20, a pointing device 30, and a printing device 60.
  • the omnidirectional image generation apparatus 1 corresponds to an aspect of a computer program product in which an omnidirectional image generation program that implements functions to be described later is installed.
  • the personal computer 10 includes a multitasking processor and the like, and includes a central control unit 11 that also functions as a vertex setting unit, and a main memory 12 having a built-in volatile storage medium such as a RAM (Random Access Memory) as a temporary storage device. And an image control unit 13 such as a graphic card, an input / output control unit 14, a built-in nonvolatile storage medium 15 such as an HDD (Hard Disk Drive) or a flash memory, and a media read / write interface 16.
  • a multitasking processor and the like includes a central control unit 11 that also functions as a vertex setting unit, and a main memory 12 having a built-in volatile storage medium such as a RAM (Random Access Memory) as a temporary storage device.
  • an image control unit 13 such as a graphic card
  • an input / output control unit 14 a built-in nonvolatile storage medium 15 such as an HDD (Hard Disk Drive) or a flash memory
  • the image control unit 13 includes a video memory 13a. Similar to the main memory 12 of the personal computer 10 main body, the video memory 13a temporarily stores data, and the memory provided in the graphic card is also referred to as VRAM (Video RAM). Data that has been processed by the image control unit 13 is temporarily stored in the video memory 13a and used as needed. For example, when 3D graphics is displayed on the display device 20, the amount of data required becomes large. Therefore, in order to display a fine 3D graphics image smoothly and without defects, the video memory 13a has a larger capacity. Is good. In recent years, the speed of VRAM has increased, and a memory standard dedicated to high-speed processing called GDDR (Graphics Double Data Rate) has also appeared, and high-speed transfer of enormous data in three-dimensional graphics drawing has been realized.
  • GDDR Graphics Double Data Rate
  • the display device 20 is an image display device such as a liquid crystal display, for example.
  • the pointing device 30 is a device that can accept coordinate input and / or button input, such as a mouse, a touch panel, and a pen tablet.
  • the cover device 20 and the pointing device 30 function as a selection unit that accepts the image format of the original omnidirectional image and accepts selection of the type of surface shape corresponding to the surface of the origami balloon as a three-dimensional object at the time of completion.
  • the printing apparatus 60 is an image forming apparatus that includes a print engine such as an ink jet method or an electrophotographic method, and can print a generated omnidirectional image on a sheet-like medium as origami.
  • the shape of the sheet-like medium is not limited to a conventional square, but may be a rectangle such as A4 paper, for example.
  • the program data 40, the omnidirectional image input data 50, and the coordinate association data 52 are input via the media read / write interface 16, and the omnidirectional image output data 51 is output via the media read / write interface 16.
  • the program data 40 is software that enables the omnidirectional image generation apparatus according to the present invention, particularly the central control unit 11, to operate, and the omnidirectional image generation program according to the present invention corresponds to this.
  • the program data 40 may be configured to be read from a computer-readable recording medium via the medium read / write interface 16 as described above, or may be recorded in advance in the built-in nonvolatile storage medium 15. May be provided by
  • the omnidirectional image input data 50 and the omnidirectional image output data 51 are an image group handled by the central control unit 11 that operates based on the program data 40.
  • the omnidirectional image input data 50 according to the present embodiment has a three-dimensional space by being provided with coordinate association data 52 described below.
  • coordinate association data 52 described below.
  • the omnidirectional image input data 50 A texture image group corresponds to the data 50 and the omnidirectional image output data 51.
  • the input texture image group is temporarily stored in the main memory 12.
  • the omnidirectional image input data 50 As the omnidirectional image input data 50, a picture created in an omnidirectional image editing apparatus (International Publication Number: WO / 2012/147303) previously filed by the applicant of the present application is used for equirectangular projection and equirectangular azimuth projection. You may use what was produced
  • the omnidirectional image output data 51 is an omnidirectional image suitable for an image formed on the origami balloon surface at the time of completion generated based on the original original omnidirectional image input.
  • the omnidirectional image output data 51 may be output to an external recording medium (not shown) in a predetermined file format so that exchange or transfer in units of files is easy. There may be a form in which a printed matter in which the omnidirectional image to be expressed is directly printed on origami by the printing apparatus 60 is provided.
  • the coordinate association data 52 is based on the type of the surface shape corresponding to the surface of the origami balloon received via the omnidirectional image selection screen described later, and the surface set in the three-dimensional space of the original omnidirectional image.
  • the table is stored in a storage unit such as the main memory 12 and the built-in nonvolatile storage medium 15.
  • the position coordinates (u, v) are (0, 0) for the upper left vertex of the sheet-like medium, (8, 0) for the upper right vertex, (0, 8) for the lower left vertex,
  • the coordinates of the lower vertex are defined and expressed as (8, 8).
  • the coordinate association data 52 may accompany the program data 40 or may read externally defined data.
  • the coordinate association data 52 can also be applied to coordinate association of an image formed in a conventional image format such as equirectangular projection, equirectangular orientation projection, etc. Is not limited.
  • each pixel of the input image provided as the omnidirectional image input data 50 and the output image provided as the omnidirectional output image data 51 has a color (r: red, g: green, b: blue).
  • a color r: red, g: green, b: blue
  • the opacity of each pixel can be recorded in 256 steps of 8-bit type.
  • An alpha value of zero means completely transparent, 255 means completely opaque.
  • a format in which density values are expanded to 65536 levels of 16-bit type, a format represented by a floating-point type, or the like may be used.
  • FIG. 5 is a diagram for explaining a configuration example of the omnidirectional image selection screen 100 according to the present embodiment.
  • 6 is an example of an original omnidirectional image formed in an image format that can be selected via the omnidirectional image selection screen 100
  • FIG. 7 is set in the three-dimensional space of the original omnidirectional image. It is a figure explaining the vertex group which comprises the surface.
  • FIG. 8 is a diagram for explaining the position coordinates of the vertexes on the origami before work.
  • FIG. 9 is a diagram for explaining the generation processing of pixel information located in the plane, and represents the two-dimensional coordinates related to the original omnidirectional image using the equirectangular projection.
  • this series of operations corresponds to the omnidirectional image generation method according to the embodiment of the present invention.
  • the central control unit 11 In the omnidirectional image generation device 1, when this omnidirectional image generation program is read from the storage medium, loaded in the main memory 12 and executed by the central control unit 11, the central control unit 11 generates the omnidirectional image generation program. Start processing.
  • the central control unit 11 displays the omnidirectional image selection screen 100 shown in FIG.
  • the omnidirectional image selection screen 100 shown in FIG. 5 generates an omnidirectional image 51 ′ suitable for an image formed on the origami balloon surface at the completion from the original omnidirectional image 50 ′ using equirectangular projection.
  • An example in which a series of processing is completed in one window is shown.
  • the user designates the file storage position of the original omnidirectional image 50 ′ in the “Import” column in the omnidirectional image selection screen 100, and the original omnidirectional image 50 ′ in the “Made From” column.
  • the image format is selected using the pointing device 30 from the pre-conversion image format selection pull-down menu 101.
  • the image format of the original omnidirectional image 50 ′ is “Equirectangular: equirectangular projection”.
  • the original omnidirectional image 50b ′ which is a developed view of the image format “Icosahedron: icosahedron”, may be selected.
  • the user designates the image format of the converted omnidirectional image 51 ′ from the converted image format selection pull-down menu 102 in the “Panorama Type” column.
  • an example of “Origami Balloon A_Top” is shown when the surface shape is a triangle or a quadrangle as the type of the surface shape after conversion and 15 surfaces having the number of surfaces A0 to A14 are selected.
  • Topic following “OrigamiBalloonA_” is selected when generating the omnidirectional image 51 ′ with the hole portion of the origami balloon at the top being the top, and similarly, “Horizontal” “Bottom” is selected when generating an omnidirectional image 51 'in which the hole portion of the origami balloon is in the horizontal direction, and “Bottom” is the omnidirectional image 51' in which the hole portion of the origami balloon is completed at the bottom. is there.
  • the user can generate the converted omnidirectional image 51 ′ by designating the converted data storage position in the “Export” field and pressing the “OK” button.
  • the image format of the original omnidirectional image 50 ′ is automatically determined by predetermined image recognition or limited to one type, and the image format of the converted omnidirectional image 51 ′ is limited to one type, It is not necessary for the user to select each of them.
  • the original omnidirectional image 50 ′ file and the converted omnidirectional image 51 ′ file may be automatically determined according to a predetermined rule.
  • a storage position existing in a predetermined folder may be specified as a file storage position of the original omnidirectional image, and a character string with a suffix added to the storage position may be specified as a storage position of the converted omnidirectional image.
  • This is suitable for implementation in an environment where a simple procedure is preferred, such as when the personal computer 10 is a smartphone, or when batch conversion of a large number of omnidirectional images.
  • step S10 when the surface shape corresponding to the surface of the origami balloon is selected by the user as “Origami Balloon A_Top”, the surface shape is a triangle or a quadrangle and the number of surfaces is A0 to A14, the central controller 11 defines surfaces A0 to A14 corresponding to the respective surfaces of the origami balloon shown below, selects all the surfaces related to the defined surface list (step S11 branches to No, step S12), and FIG. As shown in FIG. 5, all vertices relating to the surface selected in step S12 are set. Each surface is formed of a triangle or a quadrangle.
  • A0 (a0-a4-a1) A1: (a1 -a4 -a5 -a2) A2: (a2 -a5 -a3) A3: (a4 -a6 -a8) A4: (a4 -a8 -a9 -a5) A5: (a5-a9-a7) A6: (a8-a10-a12) A7: (a8-a12-a13-a9) A8: (a9-a13-a11) A9: (a12-a14-a16) A10: (a12-a16-a17-a13) A11: (a13-a17-a15) A12: (a16-a18-a19) A13: (a16-a19-a20-a17) A14: (a17-a20-a21)
  • the central control unit 11 reads out the coordinate association data 52 shown below from the storage unit such as the main memory 12 and the built-in nonvolatile storage medium 15, and from the origin (viewpoint) in the three-dimensional space with respect to the vertex group.
  • the component (x, y, z) representing the direction as a vector is associated with the position coordinates (u, v) on the origami before the work (branch to step S13, step S14, step S15, FIG. 8).
  • the component (x, y, z) is a vector for expressing a direction, it is important to maintain the ratio (x: y: z) between the axes, but the magnitude (origin) It is not essential that the distance is maintained. Further, the range “0 to 8” of the position coordinates (u, v) may be normalized to “0.0 to 1.0” when implemented using the texture of the polygon model.
  • arbitrary rotation or inversion may be performed within a range in which the positional relationship (that is, similarity) of each vertex is maintained.
  • a small amount of coordinates can be set for an arbitrary coordinate group for the purpose of correcting the positional deviation of the omnidirectional image generated when the origami balloon is completed due to the thickness of the origami. Adjustment (for example, change of ⁇ 15 degree range with respect to (x, y, z) direction or ⁇ 0.5 with respect to (0, 8, 0 to 8) of position coordinates (u, v) You may change the range).
  • the definition of the position coordinates (u, v) can be changed as long as the original planar shape of the origami balloon is similar.
  • a quadrilateral that is one of the surface shapes may be divided into two triangles.
  • the surface A1 can be divided into (a1-a4-a5) and (a1-a5-a2).
  • the central control unit 11 selects all pixels surrounded by the vertex group related to the selected surface in the converted omnidirectional image 51 ′ (step S16, branch to No, step S17), and the acquired vertex group
  • the direction (vector) is calculated using the coordinates of the selected pixel and the coordinates of the selected pixel (step S18), and pixel information of the converted omnidirectional image 51 ′ is generated using the obtained direction (step S19).
  • step S18 of FIG. 3 the central control unit 11 calculates the coordinates in the original omnidirectional image 50 ′ based on the direction calculated using the coordinates of the acquired vertex group and the coordinates of the selected pixel ( Step S20).
  • the central control unit 11 acquires pixel information of the original omnidirectional image 50 ′ based on the coordinates calculated in step S20 (step S21), and converts the omnidirectional image 51 after conversion based on the acquired pixel information. 'Is generated (step S22), and the process returns.
  • steps S16 to S19 in FIG. 3 steps S20 to S22 in FIG. 4
  • steps S16 to S19 in FIG. 3 steps S20 to S22 in FIG. 4
  • steps S16 to S19 in FIG. 3 steps S20 to S22 in FIG. 4
  • steps S16 to S19 in FIG. 3 steps S20 to S22 in FIG. 4
  • steps S16 to S19 in FIG. 3 steps S20 to S22 in FIG. 4
  • steps S16 to S19 in FIG. 3 steps S20 to S22 in FIG. 4
  • an omnidirectional image 51a ′ suitable for an image formed on the origami balloon surface upon completion as shown in FIG. 10 is generated from the original omnidirectional image 50 ′ using equirectangular projection.
  • the image generated in the present embodiment is an omnidirectional image, but is not the entire range of origami (square). For this reason, in addition to the generated omnidirectional image, it is desirable to add trim marks or the like representing the four corners of the origami.
  • a crease may be formed on each of the straight line a0-a3, the straight line a18-a21, the straight line a6-a15, and the straight line a7-a14, and the four corners of the origami may be derived from these intersections.
  • an unnecessary area is cut off or the sheet-like medium of the origami balloon can be made square by folding the sheet-like medium on the opposite side of the printing surface.
  • the surface shape corresponding to the surface of the origami balloon is a triangle or a quadrangle, and the number of surfaces is B0.
  • the central control unit 11 defines the following surfaces B0 to B24 corresponding to the respective surfaces of the origami balloon and relates to the list of defined surfaces All the faces are selected (step S11: branch to No, step S12), and as shown in FIG. 11, all vertices related to the face selected in step S12 are set. Each surface is formed of a triangle or a quadrangle.
  • B0 (b0-b4-b1) B1: (b1-b4-b5-b2) B2: (b2-b5-b3) B3: (b4 -b6 -b14) B4: (b4-b14-b15-b5) B5: (b5-b15-b7) B6: (b8-b12-b13) B7: (b9-b13-b14) B8: (b10-b15-b16) B9: (b11-b16-b17) B10: (b12-b18-b19-b13) B11: (b13-b19-b20-b14) B12: (b14-b20-b21-b15) B13: (b15-b21-b22-b16) B14: (b16-b22-b23-b17) B15: (b18-b24-b19) B16: (b19-b25-b20) B17: (b21-b26-b22) B18: (b
  • the central control unit 11 reads out the coordinate association data 52 shown below from the storage unit such as the main memory 12 and the built-in nonvolatile storage medium 15, and from the origin (viewpoint) in the three-dimensional space with respect to the vertex group.
  • the component (x, y, z) whose direction is represented by a vector is associated with the position coordinates (u, v) on the origami before the work (branch to step S13, step S14, step S15, FIG. 12).
  • b0 (-1, 0, 0) (2, 0) b1: (-1, 1, 0) (3, 0) b2: (1, 1, 0) (5, 0) b3: (1, 0, 0) (6, 0) b4: (-1, 1, 1) (3, 1) b5: (1, 1, 1) (5, 1) b6: (-1, 0, 0) (2, 2) b7: (1, 0, 0) (6, 2) b8: (0, 0, 1) (0, 2) b9: (0, 0, 1) (2, 2) b10: (0, 0, 1) (6, 2) b11: (0, 0, 1) (8, 2) b12: (0, 1, 1) (0, 3) b13: (-1, 1, 1) (1, 3) b14: (-1, -1, 1) (3, 3) b15: (1, -1, 1) (5,3) b16: (1, 1, 1) (7, 3) b17: (0, 1, 1) (8, 3) b18: (0, 1, -1) (0, 5) b19: (-1, 1,
  • step S16 of FIG. 3 which concerns on this embodiment can be performed similarly to 1st Embodiment, description here is abbreviate
  • an omnidirectional image 51b ′ suitable for an image formed on the surface of the origami balloon upon completion as shown in FIG. 13 is generated from the original omnidirectional image 50 ′ using equirectangular projection.
  • the image generated in the present embodiment is an omnidirectional image, but is not the entire range of origami (square). For this reason, in addition to the generated omnidirectional image, it is desirable to add trim marks or the like representing the four corners of the origami.
  • a crease may be formed on each of the straight line b0-b3, the straight line b8-b24, the straight line b11-b27, and the straight line b32-b35, and the four corners of the origami may be derived from these intersection points.
  • an unnecessary area is cut off or the sheet-like medium of the origami balloon can be made square by folding the sheet-like medium on the opposite side of the printing surface.
  • the surface shape is a triangle or a quadrangle, and the number of surfaces is C0.
  • the central control unit 11 defines the following planes C0 to C40 corresponding to the respective surfaces of the origami balloon, and relates to the list of defined planes. All the faces are selected (step S11: branch to No, step S12), and as shown in FIG. 14, all vertices related to the face selected in step S12 are set. Each surface is formed of a triangle or a quadrangle.
  • the central control unit 11 reads out the coordinate association data 52 shown below from the storage unit such as the main memory 12 and the built-in nonvolatile storage medium 15, and from the origin (viewpoint) in the three-dimensional space with respect to the vertex group.
  • the component (x, y, z) representing the direction as a vector is associated with the position coordinates (u, v) on the origami before work (step S13, branch to No, step S14, step S15, FIG. 15).
  • step S16 of FIG. 3 which concerns on this embodiment can be performed similarly to 1st Embodiment, description here is abbreviate
  • an omnidirectional image 51 ′ suitable for an image formed on the surface of the origami balloon when completed can be generated from the original omnidirectional image 50 ′ using the equirectangular projection.
  • the omnidirectional image generated in the present embodiment is the entire range of origami (square) unless the position coordinates (u, v) are arbitrarily moved.
  • the original origami of the origami balloon can be made square by cutting out unnecessary areas or folding origami on the opposite side of the printing surface.
  • an original omnidirectional image using equirectangular projection is converted into an omnidirectional image suitable for an origami balloon, and an origami balloon is converted from a printed square origami.
  • the state of completion will be described.
  • FIG. 16 is a diagram illustrating an example of an original omnidirectional image using equirectangular projection, that is, an image before conversion, in which the upper part of the image represents the sky and the lower part represents the ground.
  • FIG. 17A shows a state in which the converted omnidirectional image is printed on a square origami.
  • FIG. 17B shows an origami balloon completed by folding the printed origami according to a predetermined folding order. As shown in FIG. 17B, in this example, it can be seen that the hole portion of the origami balloon when completed is the upper part.
  • FIG. 18A shows a state in which the converted omnidirectional image is printed on a square origami.
  • FIG. 18B shows an origami balloon completed by folding the printed origami according to a predetermined folding order.
  • a vector representing the direction from the origin of the three-dimensional space with respect to the vertices constituting each surface so that the hole portion of the origami balloon at the time of completion is in the horizontal direction.
  • (X, y, z) is defined by rotation, and the folding paper on which the omnidirectional image obtained by the conversion is printed is started to be folded in a state of being rotated by 90 degrees and completed.
  • FIG. 19A shows a state in which the converted omnidirectional image is printed on a square origami.
  • FIG. 19B shows an origami balloon completed by folding the printed origami according to a predetermined folding order.
  • a vector (3) representing the direction from the origin of the three-dimensional space with respect to the vertices constituting each surface so that the hole portion of the origami balloon when completed is at the bottom. x, y, z) are rotated and defined, and the origami on which the omnidirectional image obtained by the conversion is printed is folded and completed.
  • an omnidirectional image generation apparatus As described above, according to an embodiment of the present invention, an omnidirectional image generation apparatus, an omnidirectional image generation method, and an omnidirectional image that can realize generation of an omnidirectional image suitable for origami that can be easily worked.
  • a generation program can be provided.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Evolutionary Computation (AREA)
  • Geometry (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Processing Or Creating Images (AREA)
  • Image Processing (AREA)

Abstract

L'invention concerne un dispositif de génération d'image omnidirectionnelle, un procédé de génération d'image omnidirectionnelle et un programme de génération d'image omnidirectionnelle au moyen desquels il est possible de générer une image omnidirectionnelle appropriée pour un objet d'origami qui peut être facilement créé. Le dispositif de génération d'image omnidirectionnelle, le procédé de génération d'image omnidirectionnelle et le programme de génération d'image omnidirectionnelle sont conçus pour générer, à partir d'une image omnidirectionnelle d'origine, une image omnidirectionnelle qui doit être formée sur les surfaces d'un objet tridimensionnel qui est réalisé par pliage d'un support de type feuille dans un ordre de pliage prédéterminé, où : des groupes de sommets constituant des surfaces, chaque surface correspondant à l'une des surfaces de l'objet tridimensionnel, sont disposés dans l'espace tridimensionnel représenté par l'image omnidirectionnelle d'origine ; des vecteurs, dont chacun représente la direction à partir d'une origine dans l'espace tridimensionnel vers un sommet du groupe de sommets, sont associés à des coordonnées de position sur le support de type feuille ; et des informations concernant des pixels sur chacune des surfaces constituées par les groupes de sommets sont générées sur la base des informations de coordonnées associées à chaque sommet.
PCT/JP2015/006177 2015-12-10 2015-12-10 Dispositif de génération d'image omnidirectionnelle, procédé de génération d'image omnidirectionnelle et programme de génération d'image omnidirectionnelle WO2017098542A1 (fr)

Priority Applications (2)

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JP2017554665A JP6762677B2 (ja) 2015-12-10 2015-12-10 全方位画像生成装置、全方位画像生成方法、及び全方位画像生成プログラム
PCT/JP2015/006177 WO2017098542A1 (fr) 2015-12-10 2015-12-10 Dispositif de génération d'image omnidirectionnelle, procédé de génération d'image omnidirectionnelle et programme de génération d'image omnidirectionnelle

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PCT/JP2015/006177 WO2017098542A1 (fr) 2015-12-10 2015-12-10 Dispositif de génération d'image omnidirectionnelle, procédé de génération d'image omnidirectionnelle et programme de génération d'image omnidirectionnelle

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06176168A (ja) * 1992-12-08 1994-06-24 Dainippon Printing Co Ltd コンピュータ・グラフィックス制作装置
JP2006527883A (ja) * 2003-06-16 2006-12-07 スリーディーペーパー カンパニー リミテッド 展開図生成システム、展開図生成方法及びその方法を実行させるためのプログラムが記録されたコンピューターで読み取り可能な記録媒体。
JP2013020447A (ja) * 2011-07-11 2013-01-31 Canon Inc 画像処理装置、画像処理方法、およびプログラム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06176168A (ja) * 1992-12-08 1994-06-24 Dainippon Printing Co Ltd コンピュータ・グラフィックス制作装置
JP2006527883A (ja) * 2003-06-16 2006-12-07 スリーディーペーパー カンパニー リミテッド 展開図生成システム、展開図生成方法及びその方法を実行させるためのプログラムが記録されたコンピューターで読み取り可能な記録媒体。
JP2013020447A (ja) * 2011-07-11 2013-01-31 Canon Inc 画像処理装置、画像処理方法、およびプログラム

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