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    IMAGE DATA PROCESSING APPARATUS
    11.
    发明专利
    IMAGE DATA PROCESSING APPARATUS 未知

    公开(公告)号：CA2053844C

    公开(公告)日：1997-01-21

    申请号：CA2053844

    申请日：1991-10-21

    Applicant: FUJITSU LTD

    Inventor： FUKUDA MASAHIRO ,  NODA TSUGIO

    IPC: G06F17/14 ,  G06T9/00 ,  H04N7/26 ,  H04N7/30 ,  H04N7/50

    Abstract: An image data processing apparatus for fast coding and reconstruction continuous-tone image data parallelly processes DCr coefficients in pipelined quantization and dequantization An image data compressing apparatus comprises an orthogonally transformer for obtaining a transform coefficient matrix by twodimensionally orthogonally transforming continuous-tone image data, a quantizer for quantizing respective elements of a coefficient matrix, a signal producer for outputting the serial quantized coefficients by attaching a termination signal to the tail end, and a coder for outputting codes corresponding to significant coefficients. An image data reconstructing apparatus comprises a decoder for decoding input codes to the coefficient codes and succession length codes, a coefficient code reverter for reverting the coefficient codes into significant coefficients. a succession length code reverter for reverting the succession length codes into insignificant ccefficient succession length, a memory for storing a data pair of a significant coefficient and an insignificant coefficient succession length, a dequantizer for obtaining appropriate transform coefficients by dequantizing significant coefficients in data pairs, and an inverse orthogonally transformer for two-dimensionally inverseorthogonally transforming the transform coefficient matrix and for outputting the tranforming result as image data.

    12.
    发明专利
    未知

    公开(公告)号：DE69026634T2

    公开(公告)日：1996-11-14

    申请号：DE69026634

    申请日：1990-02-13

    Applicant: FUJITSU LTD

    Inventor： FUKUDA MASAHIRO ,  NODA TSUGIO

    IPC: G06T9/00 ,  H04N7/26 ,  H04N7/30 ,  G06T5/00

    Abstract: A method of writing and reading coded data writes and reads the coded data which are coded by an orthogonal transform coding so that an original image can be restored progressively or sequentially, where the original image is divided into blocks of an arbitrary number of pixels and the coded data are obtained by coding quantization coefficients which are obtained when gradation levels of the pixels within each block are subjected to a two-dimensional discrete cosine transform. The method comprises the steps of extracting the quantization coefficients for each restoration stage, subjecting the extracted quantization coefficients to a variable length coding, writing the variable length coded quantization coefficients into storage means as the coded data, reading the coded data from the storage means, restoring a code length of the coded data based on the read coded data, extracting coded data corresponding to the restored code length from the read coded data, and outputting the extracted coded data as coded data required in each restoration stage.

    IMAGE DATA PROCESSING METHOD AND APPARATUS
    13.
    发明专利
    IMAGE DATA PROCESSING METHOD AND APPARATUS 未知

    公开(公告)号：CA2048882A1

    公开(公告)日：1992-02-11

    申请号：CA2048882

    申请日：1991-08-09

    Applicant: FUJITSU LTD

    Inventor： FUKUDA MASAHIRO ,  NODA TSUGIO

    IPC: H04N1/41 ,  G06T9/00 ,  H04N7/54 ,  H04N19/42 ,  H04N19/44 ,  H04N19/48 ,  H04N19/60 ,  H04N19/625 ,  H04N19/91

    Abstract: An image data reconstructing method and apparatus, adaptive to both progressive and sequential image buildup modes, reconstructs an orthogonally transformed image by dequantizing transform coefficients decoded from coded data of a continuous tone image, by causing the transform coefficients to have a common data structure through an attachment of a dummy signal representing a zero value DC element. The image data reconstructing method comprises a coded data decoding step, a common data structure one-dimensional quantized transform coefficient creating step, a one-to-two dimensional quantized transform coefficient transforming step, a dequantization threshold storing step, and a two-dimensional quantized transform coefficient dequantizing step. The image data reconstructing apparatus comprises a dummy signal generator for generating such dummy signals and a selector for selecting the dummy signals.

    IMAGE DATA PROCESSING METHOD AND APPARATUS
    14.
    发明专利
    IMAGE DATA PROCESSING METHOD AND APPARATUS 未知

    公开(公告)号：CA2048204A1

    公开(公告)日：1992-02-01

    申请号：CA2048204

    申请日：1991-07-31

    Applicant: FUJITSU LTD

    Inventor： FUKUDA MASAHIRO ,  NODA TSUGIO ,  CHIBA HIROTAKA ,  MURASHITA KIMITAKA

    IPC: G06F17/14 ,  G06T9/00 ,  H04N7/26 ,  H04N7/30 ,  H04N7/50 ,  G06F15/66

    Abstract: The present invention relates to an image data reconstructing apparatus for reconstructing an original image by dividing image data into a plurality of blocks each comprising NXN picture elements, performing two-dimensional orthogonal transform on each of said blocks, quantizing and encoding the result of said transform, decoding the encoded result, dequantizing and two-dimensional inverse orthogonal transforming the above result, wherein an operation associated with the multiplication is skipped if a multiplication by zero is detected when two-dimensional inverse orthogonal transform is performed. Before performing dequantization, two block volume of buffer is provided before or after performing two-dimensional inverse orthogonal transform for executing a pipeline process. Furthermore, two-dimensional inverse orthogonal transform is performed by repeating two times a process of one-dimensional inverse orthogonal transform and matrix transposition, thus the matrix transposition being performed as the result of one-dimensional inverse orthogonal transform which is stored in buffer.

    16.
    发明专利
    未知

    公开(公告)号：DE60315912T2

    公开(公告)日：2008-06-05

    申请号：DE60315912

    申请日：2003-02-05

    Applicant: FUJITSU LTD

    Inventor： YAMAGUCHI NOBUYASU ,  NODA TSUGIO

    IPC: G06K7/10 ,  G06K7/14 ,  G06F12/00

    Abstract: After a preprocess such as a process for extracting a portion of an image is performed by a preprocessing unit for an image such as a barcode, etc., which is obtained (1) by an image data inputting unit within a first device such as a cellular phone equipped with a camera, etc., the image is transmitted (2) to a second device such as an image processing server, etc. via a communications path by an image data transmitting unit. In the second device, an image process (3, 4) such as barcode data decoding, etc. is performed, and result data is notified (5) to the first device via the communications path.

    17.
    发明专利
    未知

    公开(公告)号：DE60315912D1

    公开(公告)日：2007-10-11

    申请号：DE60315912

    申请日：2003-02-05

    Applicant: FUJITSU LTD

    Inventor： YAMAGUCHI NOBUYASU ,  NODA TSUGIO

    IPC: G06K7/10 ,  G06K7/14 ,  G06F12/00

    Abstract: After a preprocess such as a process for extracting a portion of an image is performed by a preprocessing unit for an image such as a barcode, etc., which is obtained (1) by an image data inputting unit within a first device such as a cellular phone equipped with a camera, etc., the image is transmitted (2) to a second device such as an image processing server, etc. via a communications path by an image data transmitting unit. In the second device, an image process (3, 4) such as barcode data decoding, etc. is performed, and result data is notified (5) to the first device via the communications path.

    18.
    发明专利
    未知

    公开(公告)号：DE69334051T2

    公开(公告)日：2006-12-21

    申请号：DE69334051

    申请日：1993-09-07

    Applicant: FUJITSU LTD

    Inventor： CHIBA HIROTAKA ,  NODA TSUGIO

    IPC: H03M7/30 ,  G06T9/00 ,  G11B27/28 ,  H04N5/14 ,  H04N5/92 ,  H04N7/54 ,  H04N9/804 ,  H04N19/105 ,  H04N19/136 ,  H04N19/15 ,  H04N19/169 ,  H04N19/186 ,  H04N19/196 ,  H04N19/46 ,  H04N19/50 ,  H04N19/587 ,  H04N19/59 ,  H04N19/625 ,  H04N19/70 ,  H04N19/87 ,  H04N19/91 ,  H04N19/93

    Abstract: An image data reconstructing device, for reconstructing image data from animation data encoded by an image data encoding device, comprises: frame encoded data storing means (17) for storing encoded data of frames; detection condition storing means (18) for storing the condition set for detecting that the present frame is a scene-changed frame; scene-changed frame detecting means (19) for extracting encoded data of scene-changed frames from the encoded data according to the detection condition stored in said detection condition storing means (18) and to the difference in the amount of codes, between adjacent frames, inputted from said frame encoded data storing means (17); encoded data reconstructing means (20) for reconstructing image data from encoded data of scene-changed frames extracted by said scene-changed frame detecting means (19); scene-changed frame image storing means (21) for storing image data of the scene-changed frames reconstructed by said encoded data reconstructing means (20); and display instructing means (22) for instructing a method of displaying image data in scene-changed frame stored by said scene-changed frame image storing means (21). An image data reconstructing method of reconstructing image data from encoded data, a scene change recording device, and a scene change recording/regenerating device are also disclosed.

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