Patents by Inventor Akihiro Takashima
Akihiro Takashima has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7920147Abstract: The present invention relates to an image processing apparatus that performs predetermined conversion processing with keeping the color of an original image and eliminating processing time necessary for color space conversion, when applying special effects on video signals. The image processing apparatus includes a video signal input section for receiving a video signal having a value represented in a first color space, a signal converting section for performing predetermined conversion processing on a signal having a value represented in a second color space that is different from the first color space, and a signal interface section for supplying the signal converting section with the video signal, received by the video signal input section, that has a value represented in the first color space as a substitute for the signal having a value represented in the second color space.Type: GrantFiled: February 28, 2006Date of Patent: April 5, 2011Assignee: Sony CorporationInventors: Hideyuki Shimizu, Akihiro Takashima, Mitsuko Honma
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Patent number: 7843461Abstract: An image special effect device includes: a graphic processor and a video processing block; the graphic processor converting coordinates in virtual three-dimensional space into two-dimensional coordinates on a display screen in accordance with a supply of information on the shape of a model in the virtual three-dimensional space, computing texture coordinates of an image that is pasted on the display screen and a reduction rate of the model on the display screen, and outputting information on the texture coordinates and reduction rate from an image data output unit; the video processing block writing input video data YUV into a memory after filtered by using a pre-filter coefficient corresponding to information on the reduction rate supplied from the graphic processor, and reading out the video data from the memory by using the supplied texture coordinates as information of read-address.Type: GrantFiled: June 29, 2006Date of Patent: November 30, 2010Assignee: Sony CorporationInventors: Akihiro Takashima, Masaaki Shino, Taku Yokoyama, Hideyuki Shimizu
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Patent number: 7528841Abstract: An image transformation apparatus is provided, which includes a modeling unit 5 that calculates the coordinates of vertices of each polygon and calculates a pre-filter coefficient corresponding to a reduction ratio at the position of a vertex of each polygon, with respect to a model to which an image is attached to; a texture address unit 6 that converts the coordinates of vertices of each polygon calculated in the modeling unit 5 into the coordinates of each pixel and sets a read address for attaching an image to the model using the coordinates of each pixel; a filter coefficient unit 7 that converts a pre-filter coefficient calculated in the modeling unit 5 into a pre-filter coefficient at the position of each pixel; an H-direction pre-filter 9, an HV scan converter 10 and a V-direction pre-filter 11 that perform filtering on input image data with a pre-filter coefficient obtained through conversion in the filter coefficient unit 7; a texture memory 13 to which image data filtered in the H-direction pre-filType: GrantFiled: July 20, 2005Date of Patent: May 5, 2009Assignee: Sony CorporationInventors: Akihiro Takashima, Hiroshi Yamauchi, Hideyuki Shimizu
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Publication number: 20070002048Abstract: An image special effect device includes: a graphic processor and a video processing block; the graphic processor converting coordinates in virtual three-dimensional space into two-dimensional coordinates on a display screen in accordance with a supply of information on the shape of a model in the virtual three-dimensional space, computing texture coordinates of an image that is pasted on the display screen and a reduction rate of the model on the display screen, and outputting information on the texture coordinates and reduction rate from an image data output unit; the video processing block writing input video data YUV into a memory after filtered by using a pre-filter coefficient corresponding to information on the reduction rate supplied from the graphic processor, and reading out the video data from the memory by using the supplied texture coordinates as information of read-address.Type: ApplicationFiled: June 29, 2006Publication date: January 4, 2007Inventors: Akihiro Takashima, Masaaki Shino, Taku Yokoyama, Hideyuki Shimizu
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Publication number: 20060209082Abstract: The present invention relates to an image processing apparatus that performs predetermined conversion processing with keeping the color of an original image and eliminating processing time necessary for color space conversion, when applying special effects on video signals. The image processing apparatus includes a video signal input section for receiving a video signal having a value represented in a first color space, a signal converting section for performing predetermined conversion processing on a signal having a value represented in a second color space that is different from the first color space, and a signal interface section for supplying the signal converting section with the video signal, received by the video signal input section, that has a value represented in the first color space as a substitute for the signal having a value represented in the second color space.Type: ApplicationFiled: February 28, 2006Publication date: September 21, 2006Applicant: Sony CorporationInventors: Hideyuki Shimizu, Akihiro Takashima, Mitsuko Honma
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Publication number: 20060022989Abstract: An image transformation apparatus is provided, which includes a modeling unit 5 that calculates the coordinates of vertices of each polygon and calculates a pre-filter coefficient corresponding to a reduction ratio at the position of a vertex of each polygon, with respect to a model to which an image is attached to; a texture address unit 6 that converts the coordinates of vertices of each polygon calculated in the modeling unit 5 into the coordinates of each pixel and sets a read address for attaching an image to the model using the coordinates of each pixel; a filter coefficient unit 7 that converts a pre-filter coefficient calculated in the modeling unit 5 into a pre-filter coefficient at the position of each pixel; an H-direction pre-filter 9, an HV scan converter 10 and a V-direction pre-filter 11 that perform filtering on input image data with a pre-filter coefficient obtained through conversion in the filter coefficient unit 7; a texture memory 13 to which image data filtered in the H-direction pre-filType: ApplicationFiled: July 20, 2005Publication date: February 2, 2006Applicant: Sony CorporationInventors: Akihiro Takashima, Hiroshi Yamauchi, Hideyuki Shimizu
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Patent number: 6504551Abstract: The color of plural pixels making up a source video image is corrected by a computer 10, a hard disc device 20 and a picture processing device 30. The computer 10 functions as a parameter setting unit for setting plural parameters for designating the source color and the destination color and a computing unit for computing correction data for color correction from the source color to the destination color using the plural parameters set by the parameter setting unit. The hard disc device 20 stores the source video image and effects color correction in the picture processing device 30 for correcting the color of a pixel corresponding to the source color contained in the source video image to the destination color.Type: GrantFiled: May 4, 1999Date of Patent: January 7, 2003Assignee: Sony CorporationInventors: Akihiro Takashima, Katsuakira Moriwake, Shoichi Usui
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Patent number: 6021229Abstract: An image processing apparatus and the method for mapping a plurality of images which are on the two-dimensional plane on the corresponding faces of a solid in the three-dimensional virtual space. The mapping image on the side face being close to the object image displaying face is formed in accordance with the shape of object image displaying face of the solid on which the object image is mapped, and the image mapped on each face is displaced in accordance with the movement of the solid in the three-dimensional space. Therefore, the image that as if a desired image is stuck to the faces of the solid moving in a virtual space can be displayed on a screen surface by easily operating by an operator.Type: GrantFiled: October 24, 1997Date of Patent: February 1, 2000Assignee: Sony CorporationInventors: Akihiro Takashima, Nobuyuki Minami, Kazuhiro Maruyama
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Patent number: 6014472Abstract: A virtual 3-D object video signal V1 is produced by performing a 3-D image transformation for a source video signal, and a 2-D objet video signal V2 for virtually representing the 3-D image transformation is produced by projecting the object video signal V1 onto an X-Y plane. Further, 3-D shadow signals V3 and V5 are produced by projecting the 3-D image transformed 3-D object video signal V1 onto a shadow plane, and 2-D shadow signals V4 and V6 corresponding to said 2-D object video signal are produced by projecting the 3-D shadow signals onto the X-Y plane. Therefore, a shadow signal for a 3-D image transformed object video signal can be produced by calculations.Type: GrantFiled: September 23, 1997Date of Patent: January 11, 2000Assignee: Sony CorporationInventors: Nobuyuki Minami, Akihiro Takashima
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Patent number: 5777626Abstract: An image crop circuit performs a crop process for an input video image under the control of a CPU. An image shape changing circuit performs an image shape changing process such a mosaic process for a video signal that is cropped corresponding to a control signal. The image shape changing circuit supplies the video image to a graphic inserter circuit. A GDC that is a graphic dedicated CPU draws a positive region of a contour line of the crop region as a solid line and a negative region as a dotted line. The graphic inserter circuit superimposes the contour line with the video signal that is cropped and outputs the resultant signal to both a CRT monitor and an output terminal.Type: GrantFiled: August 29, 1995Date of Patent: July 7, 1998Assignee: Sony CorporationInventors: Akihiro Takashima, Tetsuro Nakata