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    Apparatus for encoding an image signal
    2.
    发明授权
    Apparatus for encoding an image signal 失效
    用于编码图像信号的装置

    公开(公告)号：US5598484A

    公开(公告)日：1997-01-28

    申请号：US385204

    申请日：1995-02-08

    申请人： Kazuhiro Suzuki ,  Koh Kamizawa ,  Yutaka Koshi ,  Setsu Kunitake

    发明人： Kazuhiro Suzuki ,  Koh Kamizawa ,  Yutaka Koshi ,  Setsu Kunitake

    IPC分类号： G06T9/00 ,  H04N7/26 ,  H04N7/28 ,  H04N7/30 ,  G06K9/36 ,  G06K9/46

    CPC分类号： H04N19/59 ,  H04N19/14 ,  H04N19/154 ,  H04N19/176 ,  H04N19/18 ,  H04N19/94 ,  H04N19/124 ,  H04N19/132 ,  H04N19/60

    摘要： Apparatus for encoding an image signal which is capable of improving the quality of a reproduced image with respect to not only a general image in which electric power is concentrated in low-frequency region coefficients but also an image where the electric power is concentrated in a high-frequency region. The apparatus comprises a blocking device in which a rectangular area in an image is detected from a digital image signal as a pixel block, and is subjected to an orthogonal transform by a converter to obtain a transformed coefficient. In addition, an activity calculator calculates the variance of the image within the block, and electric power to be preserved during encoding is determined by a power-preservation-rate determining device on the basis of the variance determined. An optimum mask is selected by a mask selector on the basis of a transformed coefficient from the converter and a power preservation rate from the power-preservation-rate determining device, and the selection of the transformed coefficient is performed by a coefficient selector by means of this mask. The transformed coefficient after being selected is quantized by a quantizer, is encoded to be outputted through a transmission line.

    摘要翻译： 用于对图像信号进行编码的装置，其不仅能够相对于电力集中在低频区域系数的一般图像而且能够将电力集中在高的图像中来提高再现图像的质量 频区。 该装置包括阻挡装置，其中从数字图像信号中检测图像中的矩形区域作为像素块，并且通过转换器进行正交变换以获得变换的系数。 此外，活动计算器计算块内的图像的方差，并且根据确定的方差由电力保存率确定装置确定编码期间要保留的电力。 基于来自转换器的变换系数和来自保存速率确定装置的保存速率，通过掩模选择器选择最佳掩模，并且变换系数的选择由系数选择器通过 这个面具。 选择后的变换后的系数由量化器量化，被编码为通过传输线输出。

    Image encoding apparatus sensitive to tone variations
    3.
    发明授权
    Image encoding apparatus sensitive to tone variations 失效
    对音色变化敏感的图像编码装置

    公开(公告)号：US5414527A

    公开(公告)日：1995-05-09

    申请号：US928718

    申请日：1992-08-13

    申请人： Yutaka Koshi ,  Koh Kamizawa ,  Setsu Kunitake ,  Kazuhiro Suzuki

    发明人： Yutaka Koshi ,  Koh Kamizawa ,  Setsu Kunitake ,  Kazuhiro Suzuki

    IPC分类号： G06T9/00 ,  H04N1/41 ,  H04N1/415

    CPC分类号： G06T9/005 ,  H04N19/13 ,  H04N19/60 ,  H04N19/91

    摘要： An encoding system which prevents deterioration of a picture quality and provides a high encoding efficiency even when the size of a block is increased to enhance an encoding efficiency. An input image which is divided into blocks by a blocking unit, is supplied to a plurality of encoders which perform encoding in different numbers of tone levels respectively. Respective pieces of encoded image information from the respective encoders are supplied in common to a selector. A block classification unit determines the degree of the tone gradient of an input block and then outputs the classification result to the selector. The selector, in accordance with the block classification result, selects one of the respective pieces of the encoded image information and outputs the selected one as selected encoded image information. For example, when the tone varies greatly, there is selected the encoder which has a small number of tone levels and a high resolution.

    摘要翻译： 一种防止图像质量劣化并且即使当块的大小增加以提高编码效率时也提供高编码效率的编码系统。 通过分块单元将输入图像分割成多个块，被分别提供给以不同数量的音调级进行编码的多个编码器。 来自相应编码器的编码图像信息的相应片段被共同地提供给选择器。 块分类单元确定输入块的色调梯度的程度，然后将分类结果输出到选择器。 选择器根据块分类结果选择各段编码图像信息中的一个，并输出所选择的编码图像信息。 例如，当音调变化很大时，选择具有少量音调级别和高分辨率的编码器。

    Image signal analyzing system and coding system
    4.
    发明授权
    Image signal analyzing system and coding system 失效
    图像信号分析系统和编码系统

    公开(公告)号：US5613015A

    公开(公告)日：1997-03-18

    申请号：US456607

    申请日：1995-06-01

    申请人： Kazuhiro Suzuki ,  Yutaka Koshi ,  Setsu Kunitake ,  Shunichi Kimura ,  Koh Kamizawa

    发明人： Kazuhiro Suzuki ,  Yutaka Koshi ,  Setsu Kunitake ,  Shunichi Kimura ,  Koh Kamizawa

    IPC分类号： G06T7/60 ,  G06T9/00 ,  G06K9/34

    CPC分类号： G06T7/60 ,  G06T9/007

    摘要： An image signal analyzing system for analyzing a pattern of an image on the basis of the waveforms of the image signals. The system includes a block extracting section for sampling an image signal and dividing the sampled image signal into input pixel blocks each consisting of m.times.n pixels (m and n are positive integers), a mean value separating section for subtracting a mean value from each pixel in the pixel block, a first analyzing section for analyzing a feature quantity of the direction of the tone variation of a mean-value separated block obtained from the mean value separating section, a second analyzing section for analyzing a feature quantity of the direction of amplitude of the mean-value separated block, and a judging section for judging a feature of waveform of the input pixel block on the basis of the analysis results of the first analyzing section and the second analyzing section.

    摘要翻译： 一种用于基于图像信号的波形分析图像的图案的图像信号分析系统。 该系统包括块提取部分，用于对图像信号进行采样并将采样的图像信号分成由m×n个像素组成的输入像素块（m和n为正整数），平均值分离部分，用于从 像素块，用于分析从平均值分离部获得的平均值分离块的色调变化的方向的特征量的第一分析部，用于分析平均值分离部的振幅方向的特征量的第二分析部 平均值分离块，以及用于基于第一分析部分和第二分析部分的分析结果来判断输入像素块的波形特征的判断部分。

    Image signal analyzing system
    5.
    发明授权
    Image signal analyzing system 失效
    图像信号分析系统

    公开(公告)号：US5500907A

    公开(公告)日：1996-03-19

    申请号：US903284

    申请日：1992-06-24

    申请人： Setsu Kunitake ,  Koh Kamizawa ,  Yutaka Koshi ,  Kazuhiro Suzuki

    发明人： Setsu Kunitake ,  Koh Kamizawa ,  Yutaka Koshi ,  Kazuhiro Suzuki

    IPC分类号： H04N1/415 ,  G06K9/62 ,  G06T7/60 ,  G06T9/00 ,  H04N7/26 ,  H04N7/28 ,  H04N11/02

    CPC分类号： H04N19/94 ,  G06K9/6282

    摘要： An image signal analyzing system capable of accomplishing shape analysis for processing or coding an image with easy, by space division using two orthogonal representative vectors, or by differential representative vectors given by the difference between representative vectors. With such a system, inner products between mean separated blocks produced by a mean separated unit and a differential representative vector set stored in a memory in advance are computed by inner product computing unit disposed into a binary tree shape having n stages. Positive/negative signs expressing resulting inner products in the respective stages of the binary tree computed by the inner product computing unit are held, as indexes, by n index holding means sequentially, and an index representing the shape of input image information is obtained from the n indexes held by the index holding unit.

    摘要翻译： 一种图像信号分析系统，其能够通过使用两个正交代表矢量的空间划分，或者由代表矢量之间的差异给出的差分代表矢量，容易地进行图像处理或编码的形状分析。 利用这样的系统，通过设置成具有n个阶段的二叉树形状的内积计算单元计算由平均分离单位产生的平均分离块和预先存储在存储器中的差分代表向量集合之间的内积。 由内积计算单元计算出的在二叉树的各个阶段中产生的内积的正/负符号依次由n个索引保持装置作为索引保存，并且从该索引保存装置获得表示输入图像信息的形状的索引 指数持有单位持有的n种指数。

    Image forming apparatus
    6.
    发明授权
    Image forming apparatus 失效
    图像形成装置

    公开(公告)号：US5978561A

    公开(公告)日：1999-11-02

    申请号：US728089

    申请日：1996-10-09

    申请人： Shunichi Kimura ,  Akihiro Andoh ,  Setsu Kunitake ,  Shinji Shishido ,  Yutaka Koshi ,  Koh Kamizawa

    发明人： Shunichi Kimura ,  Akihiro Andoh ,  Setsu Kunitake ,  Shinji Shishido ,  Yutaka Koshi ,  Koh Kamizawa

    IPC分类号： G03G15/01 ,  G06K15/00 ,  G06K15/12 ,  H04N1/00 ,  H04N1/04 ,  H04N1/387 ,  H04N1/411 ,  B41B15/00 ,  B41J2/385 ,  H04N1/417

    CPC分类号： G06K15/00 ,  G06K15/129 ,  G06K2215/0022 ,  G06K2215/0094

    摘要： The memory capacity required for temporarily holding image data with respect to a printer is reduced, and loads involved in supplying image data, such as decoding and conversion processes, are dispersed and reduced. The apparatus divides image data in parallel with a main scanning direction by an image divider, stores the divided data in image data memory, and supplies the divided image data to image data temporary memory by an image data supply to perform a decoding process. In order to provide a matching with a process speed, the image data temporary memory temporarily retains the divided image data, and a printer prints an image on a sheet of paper on the basis of the divided image data stored in the image data temporary memory. A predictor predicts a supply process time by way of image data supply, and an image data supply control causes the image data supply to start the supply process of the divided image data at a time preceding the time for the start of the print process by the printer according to the time predicted.

    摘要翻译： 临时保存关于打印机的图像数据所需的存储器容量减少，并且分散和减少诸如解码和转换处理之类的提供图像数据所涉及的负载。 该装置通过图像分割器与主扫描方向并行地分割图像数据，将划分的数据存储在图像数据存储器中，并通过图像数据供给分割图像数据到图像数据临时存储器，以执行解码处理。 为了提供与处理速度的匹配，图像数据临时存储器暂时保留分割的图像数据，并且打印机基于存储在图像数据临时存储器中的分割图像数据在一张纸上打印图像。 预测器通过图像数据供给来预测供给处理时间，并且图像数据供给控制使图像数据供给在开始印刷处理的时间之前开始分割图像数据的供给处理 打印机根据时间预测。

    Image analysis method and device
    7.
    发明授权
    Image analysis method and device 失效
    图像分析方法和装置

    公开(公告)号：US06236756B1

    公开(公告)日：2001-05-22

    申请号：US09210769

    申请日：1998-12-14

    申请人： Shunichi Kimura ,  Setsu Kunitake ,  Yutaka Koshi ,  Koh Kamizawa

    发明人： Shunichi Kimura ,  Setsu Kunitake ,  Yutaka Koshi ,  Koh Kamizawa

    IPC分类号： G06K946

    CPC分类号： G06T9/00

    摘要： An image analysis device and method that have a mechanism for exactly predicting image quality determining factors and determine a coding parameter for an input image by combining plural different image quality determining factors, which does not deteriorate the image quality of the input image and raises the compression ratio as high as possible. In the image analysis device, an image extraction unit 102 extracts an image area to be analyzed from an input image 101. The extracted image area 102 is input to plural physical quantity calculating units 104. Each physical quantity calculating unit 104 calculates a physical quantity 105 independently of others and each of obtained physical quantities 105 is input to plural image quality determining factor calculating units 106. On receiving the plural physical quantities 105, each of the image quality determining factor calculating units 106 calculates an image quality determining factor 107. A coding parameter calculating unit 108 calculates a coding parameter based on the plural image quality determining factors 107 output from the plural image quality determining factor calculating units 106.

    摘要翻译： 一种图像分析装置和方法，具有用于精确地预测图像质量决定因素的机构，并且通过组合多个不同的图像质量确定因子来确定输入图像的编码参数，这不会降低输入图像的图像质量并提高压缩 比例尽可能高。 在图像分析装置中，图像提取单元102从输入图像101提取要分析的图像区域。提取图像区域102被输入到多个物理量计算单元104.每个物理量计算单元104计算物理量105 独立于其他，并且获得的每个物理量105被输入到多个图像质量确定因子计算单元106.在接收到多个物理量105时，每个图像质量确定因子计算单元106计算图像质量确定因子107.编码 参数计算单元108基于从多个图像质量确定因子计算单元106输出的多个图像质量确定因子107来计算编码参数。

    Image information encoding/decoding apparatus assuring a minimum compression ratio and limiting a transfer rate
    8.
    发明授权
    Image information encoding/decoding apparatus assuring a minimum compression ratio and limiting a transfer rate 失效
    图像信息编码/解码装置确保最小压缩比并限制传送速率

    公开(公告)号：US5900946A

    公开(公告)日：1999-05-04

    申请号：US416984

    申请日：1995-04-05

    申请人： Setsu Kunitake ,  Koh Kamizawa ,  Yutaka Koshi ,  Shunichi Kimura ,  Akihiro Andoh

    发明人： Setsu Kunitake ,  Koh Kamizawa ,  Yutaka Koshi ,  Shunichi Kimura ,  Akihiro Andoh

    IPC分类号： G06T9/00 ,  H03M7/30 ,  H04N1/41 ,  H04N7/60 ,  H04N19/102 ,  H04N19/126 ,  H04N19/134 ,  H04N19/176 ,  H04N19/196 ,  H04N19/60 ,  H04N19/625

    CPC分类号： H04N21/434 ,  H04N19/115 ,  H04N19/152 ,  H04N19/184 ,  H04N19/60 ,  H04N21/236 ,  H04N19/146 ,  H04N19/50

    摘要： Transfer control information for controlling a transfer amount per unit time of a transfer path is delivered from a transfer control section to an information transfer section. During encoding, the information transfer section receives image information from an external device in accordance with the transfer control information, and inputs the same to an image-information encoding/decoding section. A code-amount control section forwards code-amount control information for controlling the code amount to the image-information encoding/decoding section. The image-information encoding/decoding section encodes the image information in accordance with the code-amount control information outputted from the code-amount control section. The information transfer section transfers to an external device encoded information outputted from the image-information encoding/decoding section, while the transfer amount per unit time is being controlled by the transfer control section.

    摘要翻译： 用于控制传送路径的每单位时间的传送量的传送控制信息从传送控制部传送到信息传送部。 在编码期间，信息传送部根据传送控制信息从外部设备接收图像信息，并将其输入到图像信息编码/解码部分。 码量控制部分转发用于控制代码量的代码量控制信息给图像信息编码/解码部分。 图像信息编码/解码部分根据从码量控制部分输出的码量控制信息对图像信息进行编码。 信息传送部分转移到由图像信息编码/解码部分输出的外部设备编码信息，同时转移控制部分控制每单位时间的传送量。