Abstract: Provided is a fluorescent material with high brightness. The fluorescent material includes a nitride fluorescent material comprising La, Ce, Si, and N; and a first phosphorus compound disposed on a surface of the nitride fluorescent material. The first phosphorus compound includes at least one selected from the group consisting of lanthanum phosphate, lanthanum hydrogen phosphate, and hydrates thereof. A content of phosphorus atoms in the fluorescent material is 0.07% by mass or higher and 0.8% by mass or lower.

Abstract: An image generation device divides a distorted-image plane into pixel blocks in order to generate a distorted image in consideration of the distortion and chromatic aberration of an eyepiece. In the plane of a source image, the image generation device determines individual RGB sample positions included in the pixel blocks, sets a bounding rectangle containing the individual RGB sample positions, and determines, for example, computation target pixels corresponding to the bounding rectangle. The image generation device calculates the pixel values of, for example, the computation target pixels, interpolates and samples the calculated pixel values, and regards the results of interpolation and sampling as the pixel values of the distorted image.

Abstract: Provided is a fluorescent material with high brightness. The fluorescent material includes a nitride fluorescent material comprising La, Ce, Si, and N; and a first phosphorus compound disposed on a surface of the nitride fluorescent material. The first phosphorus compound includes at least one selected from the group consisting of lanthanum phosphate, lanthanum hydrogen phosphate, and hydrates thereof. A content of phosphorus atoms in the fluorescent material is 0.07% by mass or higher and 0.8% by mass or lower.

Abstract: Provided is a nitride phosphor with high emission intensity. The nitride phosphor includes: a group 1 element(s) including at least one selected from the group consisting of lithium, sodium, and potassium; a group 2 element(s) including at least one selected from the group consisting of magnesium, calcium, strontium, and barium; a group 13 element(s) including at least one selected from the group consisting of aluminum, gallium, and indium; a group 14 element(s) including at least one selected from the group consisting of silicon, germanium, and tin; nitrogen; and cerium. The nitride phosphor includes, as a host crystal, a crystal having the same crystal structure as CaAlSiN3, wherein the internal quantum efficiency upon excitation at 450 nm is not less than 87%.

Abstract: Provided a method for producing a nitride phosphor. The method includes preparing a mixture that comprises a first nitride and a cerium source, the first nitride comprising, as a host crystal, a crystal having the same crystal structure as CaAlSiN3; and performing a heat treatment of the mixture at a temperature of 1,300° C. to 1,900° C. to obtain a second nitride. The first nitride comprises aluminum, silicon, nitrogen, and at least one selected from the group consisting of lithium, calcium, and strontium.

Abstract: Provided are an upscaling device, an upscaling method, and an upscaling program capable of keying processing at low cost and with high accuracy.

Abstract: An input information acquiring section accepts a user's operation. A texture region acquiring section acquires a region of a display image to be presented by use of a texture. A velocity acquiring section acquires for each pixel a movement velocity vector of the texture on a plane of the display image. A texture referencing section adjusts a reference range in an axial direction of the velocity vector in keeping with a magnitude of the movement velocity, before sampling texel values. A pixel value determining section determines a pixel value on the basis of the texel values. An output section outputs the display image.

Abstract: An image acquisition unit 40 acquires a subject image in which a subject is positioned in front of a background with a single color. An eye gaze information determination unit 32 determines an eye direction and a viewpoint position of a user wearing an HMD and provides the eye direction and the viewpoint position for a display control unit 50. The display control unit 50 performs chroma-key composition such that the subject included in the subject image may become a foreground image with respect to a background image and thereby generates a display image according to the viewpoint position of the user. The display control unit 50 determines an orientation of the subject such that the subject may be made to face the viewpoint position of the user, in a case where the viewpoint position has been changed.

Abstract: Estimation data indicating a foreground region is generated with high precision. A learning apparatus includes an input-image acquisition section that acquires a combination of a first input image representing a background and a foreground and a second input image representing the background in a mode different from that in the first input image, and a learning section that includes an estimation section to generate estimation data indicating the foreground region in the first input image in response to input of the first input image and the second input image, and that conducts learning at the estimation section on the basis of a given teacher image and the estimation data that is generated when the first input image and the second input image are inputted.

Abstract: Provided is a method for producing a nitride fluorescent material including: preparing a raw material mixture including a hydride containing at least one first alkaline earth metal element, at least one compound containing at least one second alkaline earth metal element and selected from an amide compound and an imide compound, a compound containing europium, a compound containing aluminum, and a compound containing silicon, wherein at least one of the compound containing europium, the compound containing aluminum, and the compound containing silicon is a nitride; and subjecting the raw material mixture to a heat treatment to obtain the nitride fluorescent material.

Abstract: When a user fast-forwards pages and there arises a necessity to display pages ahead of image data generating processing by a page image generating unit 114, a paging managing unit 112 of a viewing screen control section 110 culls pages whose image data is to be generated, and requests an image rendering unit 122 to display already generated preceding or succeeding pages as a dummy. A display region managing unit 116 requests the image rendering unit 122 to sequentially display specified display regions stored in a movement rule storage unit 118 according to advancing operation of the user. The advancing operation is started at a point in time that a finger in contact with a front touch pad 21 is removed. An advance notice operation of moving a display region by a minute amount in a direction in which a movement is intended to be performed is performed before the advancing operation.

Abstract: To prevent any variation of the grayscale to be originally present from becoming unclear, diminishing banding that is generated when an image including a gradation is displayed. An image processing device obtains image data of an original image including plural pixels, obtains an evaluation value that represents the possibility of the generation of the banding on the basis of the color distribution of a noted area including a target pixel that is any one of the plural pixels, produces an intermediate image of which the color of the target pixel is corrected on the basis of the evaluation value, and causes a corrected image to be output on the basis of the produced intermediate image. A correction amount of the color of the target pixel is varied in accordance with the evaluation value, in the correction of the color.

Abstract: A motion detecting section 30 detects the attitude of a head-mounted display device worn on the head of a user. A visual line direction determining section 32 determines a visual line direction in accordance with the detected attitude of the head-mounted display device. An image generating section 34 generates an image based on the determined visual line direction. An image providing section 36 provides the head-mounted display device with the generated image. An instruction acquiring section 24 acquires from an input device 6 an instruction to switch the visual line direction. When the instruction acquiring section 24 acquires the switching instruction, the visual line direction determining section 32 changes the visual line direction by a predetermined angle.

Abstract: Methods and apparatus provide for tilting of a joystick. When there is room for scrolling in the tilting direction, a screen is scrolled in the same direction as the tilting direction. When there is no room for scrolling, and a previous or subsequent region continuous with a present display region in the contents of a book is present within double-spread pages at the time point in question, display is switched to the previous or subsequent region. When the previous or subsequent region continuous with the present display region is not present within the double-spread pages, and the tilting direction is parallel with the opening of the pages, a page turning animation is inserted, and the display region is switched. When the tilting direction is not parallel with the opening of the pages, display is directly switched.

Abstract: An input information acquiring section accepts a user's operation. A texture region acquiring section acquires a region of a display image to be presented by use of a texture. A velocity acquiring section acquires for each pixel a movement velocity vector of the texture on a plane of the display image. A texture referencing section adjusts a reference range in an axial direction of the velocity vector in keeping with a magnitude of the movement velocity, before sampling texel values. A pixel value determining section determines a pixel value on the basis of the texel values. An output section outputs the display image.

Abstract: An image acquisition unit 40 acquires a subject image in which a subject is positioned in front of a background with a single color. An eye gaze information determination unit 32 determines an eye direction and a viewpoint position of a user wearing an HMD and provides the eye direction and the viewpoint position for a display control unit 50. The display control unit 50 performs chroma-key composition such that the subject included in the subject image may become a foreground image with respect to a background image and thereby generates a display image according to the viewpoint position of the user. The display control unit 50 determines an orientation of the subject such that the subject may be made to face the viewpoint position of the user, in a case where the viewpoint position has been changed.

Abstract: Provided is a method for producing a nitride fluorescent material including: preparing a raw material mixture including a hydride containing at least one first alkaline earth metal element, at least one compound containing at least one second alkaline earth metal element and selected from an amide compound and an imide compound, a compound containing europium, a compound containing aluminum, and a compound containing silicon, wherein at least one of the compound containing europium, the compound containing aluminum, and the compound containing silicon is a nitride; and subjecting the raw material mixture to a heat treatment to obtain the nitride fluorescent material.

Abstract: A motion detecting section 30 detects the attitude of a head-mounted display device worn on the head of a user. A visual line direction determining section 32 determines a visual line direction in accordance with the detected attitude of the head-mounted display device. An image generating section 34 generates an image based on the determined visual line direction. An image providing section 36 provides the head-mounted display device with the generated image. An instruction acquiring section 24 acquires from an input device 6 an instruction to switch the visual line direction. When the instruction acquiring section 24 acquires the switching instruction, the visual line direction determining section 32 changes the visual line direction by a predetermined angle.

Abstract: An image generating apparatus generates a panoramic image by transforming at least one divided area including a range onto which a scene viewed from an observation point is projected, out of eight divided areas obtained by dividing the surface of a sphere having at least a partial range onto which the scene is projected, with three planes that pass through the center of the sphere and are orthogonal to each other, into such an area that the number of pixels corresponding to mutually equal latitudes is progressively reduced toward higher latitudes, and placing the transformed area on a plane, and outputs the generated panoramic image.