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    Picture data compression devices and red data detection devices
    3.
    发明公开
    Picture data compression devices and red data detection devices 失效
    图片数据压缩设备和红色数据检测设备

    公开(公告)号：EP0648059A3

    公开(公告)日：1995-05-10

    申请号：EP94306568.0

    申请日：1994-09-07

    申请人： SONY CORPORATION

    发明人： Sugisaki, Kiminori, c/o Intellectual Property Div. ,  Fischl, Jason, c/o Intellectual Property Division ,  Izumi, Nobuaki, c/o Intellectual Property Division ,  Yanagihara, Naofumi, c/o Intellectual Property Div ,  Kiyama, Yuka, c/o Intellectual Property Division

    IPC分类号： H04N11/04

    CPC分类号： H04N11/044 ,  H04N9/8047 ,  H04N19/122 ,  H04N19/126 ,  H04N19/137 ,  H04N19/14 ,  H04N19/149 ,  H04N19/176 ,  H04N19/186

    摘要： In a picture data compressing device, picture data is divided by a blocking circuit (1) into plural blocks each consisting of a pre-set number of pixels and shuffled by a shuffling circuit (2). The blocked and shuffled data is transformed by a DCT circuit (3) into data in the frequency domain and re-quantized by a quantization circuit (4) for compressing the picture data. A red detector (6) decides whether or not a block from the shuffling circuit (2) is a red-based block. If the red detector (6) finds the block to be a red-based block, a controller (7) controls the quantization circuit (4) so that the quantization step of the quantization circuit (4) will become finer. The picture data of the red-based block susceptible to block distortion may be quantized with a finer quantization step for improving reproducibility and alleviating block distortion.

    摘要翻译： 在图像数据压缩装置中，图像数据被分块电路（1）分成多个块，每个块由预定数量的像素组成，并由混洗电路（2）混洗。 经过分块和混洗的数据由DCT电路（3）转换成频域数据并由量化电路（4）重新量化以压缩图像数据。 红色检测器（6）判定来自混洗电路（2）的块是否是基于红色的块。 如果红色检测器（6）发现该块是基于红色的块，则控制器（7）控制量化电路（4），使得量化电路（4）的量化级将变得更精细。 可以利用更精细的量化步骤来量化易受块失真影响的基于红的块的图像数据，以改善再现性并减轻块失真。

    Picture data compression devices and red data detection devices
    4.
    发明公开
    Picture data compression devices and red data detection devices 失效
    装置，用于压缩图像数据和设备，用于检测红数据。

    公开(公告)号：EP0648059A2

    公开(公告)日：1995-04-12

    申请号：EP94306568.0

    申请日：1994-09-07

    申请人： SONY CORPORATION

    发明人： Sugisaki, Kiminori, c/o Intellectual Property Div. ,  Fischl, Jason, c/o Intellectual Property Division ,  Izumi, Nobuaki, c/o Intellectual Property Division ,  Yanagihara, Naofumi, c/o Intellectual Property Div ,  Kiyama, Yuka, c/o Intellectual Property Division

    IPC分类号： H04N11/04

    CPC分类号： H04N11/044 ,  H04N9/8047 ,  H04N19/122 ,  H04N19/126 ,  H04N19/137 ,  H04N19/14 ,  H04N19/149 ,  H04N19/176 ,  H04N19/186

    摘要： In a picture data compressing device, picture data is divided by a blocking circuit (1) into plural blocks each consisting of a pre-set number of pixels and shuffled by a shuffling circuit (2). The blocked and shuffled data is transformed by a DCT circuit (3) into data in the frequency domain and re-quantized by a quantization circuit (4) for compressing the picture data. A red detector (6) decides whether or not a block from the shuffling circuit (2) is a red-based block. If the red detector (6) finds the block to be a red-based block, a controller (7) controls the quantization circuit (4) so that the quantization step of the quantization circuit (4) will become finer. The picture data of the red-based block susceptible to block distortion may be quantized with a finer quantization step for improving reproducibility and alleviating block distortion.

    摘要翻译： 在图象数据压缩装置中，图象数据是通过一个阻塞电路（1）分割成多个块的像素的预先设定数的每个由与混洗由混洗电路（2）。 阻塞和混洗数据由DCT电路（3）转化成数据在频域和由量化电路（4），用于压缩图像数据重新量化。 红色检测器（6）决定从混洗电路的方框是否（2）是一个红色为主块。 如果红色检测器（6）发现该块是一个红色基于块的，控制器（7）控制量化电路（4）象量化电路的量化步（4）将变得更细。 红色基于块易受块失真的图像数据可以与用于改善再现性和减轻块失真的更精细的量化步骤被量化。