公开(公告)号：US5956430A

公开(公告)日：1999-09-21

申请号：US726410

申请日：1996-10-03

申请人： Setsu Kunitake ,  Shun-ichi Kimura ,  Taro Yokose ,  Yutaka Koshi ,  Koh Kamizawa

发明人： Setsu Kunitake ,  Shun-ichi Kimura ,  Taro Yokose ,  Yutaka Koshi ,  Koh Kamizawa

IPC分类号： G06T9/00

CPC分类号： G06T9/005

摘要： An image information coding apparatus includes a block generator for dividing image information into pixel blocks, each of which consists of a predetermined number of pixels. A block selector selects a pixel block in a position different from that of a pixel block selected in a preceding block line in a main scanning direction from the pixel blocks generated by the block generator. A parameter setting device sets a coding parameter to a predetermined value. A first variable-length coding device conducts variable-length coding of the pixel block selected by the block selector using the coding parameter. A code amount controller changes a value of the coding parameter so that the code amount of the pixel block selected by the block selector and coded by the first variable-length coding device is not more than a predetermined code amount, and a second variable-length coding device conducts variable-length coding of all of the pixel blocks using a coding parameter changed by the code amount controller.

摘要翻译： 图像信息编码装置包括块图像信号分割成像素块的块发生器，每个像素块由预定数量的像素构成。 块选择器从块生成器生成的像素块中选择与主扫描方向上的前一块行中选择的像素块的位置不同的像素块。 参数设定装置将编码参数设定为规定值。 第一可变长度编码装置使用编码参数对由块选择器选择的像素块进行可变长度编码。 代码量控制器改变编码参数的值，使得由块选择器选择并由第一可变长度编码装置编码的像素块的代码量不大于预定代码量，并且第二可变长度 编码装置使用由代码量控制器改变的编码参数来进行所有像素块的可变长度编码。

公开(公告)号：US5822463A

公开(公告)日：1998-10-13

申请号：US917168

申请日：1997-08-25

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

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

IPC分类号： G06T9/00 ,  H03M7/30 ,  H03M7/36 ,  H03M7/40 ,  H04N1/41 ,  H04N19/126 ,  H04N19/134 ,  H04N19/146 ,  H04N19/189 ,  H04N19/196 ,  H04N19/423 ,  H04N19/60 ,  H04N19/625 ,  H04N19/85 ,  H04N19/91

CPC分类号： H04N19/192 ,  H04N19/124 ,  H04N19/149 ,  H04N19/172 ,  H04N19/60 ,  H04N19/146 ,  H04N19/152

摘要： An image transforming section subjects image data to compression processing. A quantizing section quantizes the transformed data using a quantization width. A variable-length coding section subjects the quantized data to variable-length coding. A code-amount computing section determines a total code amount by accumulating partial code amounts. A control section performs control based on the code amount. An estimating method selecting section adaptively selects a quantization width estimating method. A coded result storage section stores data of a code amount corresponding to the quantization width. First and second quantization width estimating sections have different quantization width estimating methods.

摘要翻译： 图像变换部将图像数据进行压缩处理。 量化部分使用量化宽度来量化变换的数据。 可变长度编码部分对经量化的数据进行可变长度编码。 代码量计算部分通过累积部分代码量来确定总代码量。 控制部根据代码量进行控制。 估计方法选择部分自适应地选择量化宽度估计方法。 编码结果存储部分存储与量化宽度对应的代码量的数据。 第一和第二量化宽度估计部分具有不同的量化宽度估计方法。

公开(公告)号：US5991458A

公开(公告)日：1999-11-23

申请号：US912112

申请日：1997-08-15

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

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

IPC分类号： B41J5/30 ,  G06T9/00 ,  H04N1/41 ,  H04N17/00 ,  H04N19/00 ,  H04N19/102 ,  H04N19/124 ,  H04N19/126 ,  H04N19/134 ,  H04N19/136 ,  H04N19/14 ,  H04N19/162 ,  H04N19/167 ,  H04N19/169 ,  H04N19/176 ,  H04N19/189 ,  H04N19/196 ,  H04N19/423 ,  H04N19/50 ,  H04N19/59 ,  H04N19/60 ,  H04N19/61 ,  H04N19/625 ,  H04N19/86 ,  G06K9/00

CPC分类号： H04N17/004 ,  H04N19/124 ,  H04N19/126 ,  H04N19/14 ,  H04N19/147 ,  H04N19/149 ,  H04N19/15 ,  H04N19/154 ,  H04N19/176 ,  H04N19/60 ,  H04N19/61 ,  H04N19/85 ,  H04N19/146

摘要： An image quality control apparatus having an image divider, a converter, an image analyzer, an image output property circuit, a quantization method selector, a quantizer and a coder. The image divider divides an input image into a plurality of divided images including a predetermined number of picture elements. The converter converts the divided images into converted coefficients. Then, the image analyzer determines a property of the divided images which is output by the image output property output circuit. A quantization selector selects a quantization method in response to the divided image property that was found by the image analyzer and the image output property output circuit. The quantizer quantizes the conversion coefficients found by the converter in accordance with the quantization methods selected by the quantization selector. A coder then codes the conversion coefficients quantized by the quantizer.

摘要翻译： 具有图像分割器，转换器，图像分析器，图像输出特性电路，量化方法选择器，量化器和编码器的图像质量控制装置。 图像分割器将输入图像划分成包括预定数量的图像元素的多个分割图像。 转换器将分割的图像转换为转换的系数。 然后，图像分析仪确定由图像输出特性输出电路输出的分割图像的特性。 量化选择器响应于由图像分析仪和图像输出特性输出电路找到的分割图像特性来选择量化方法。 量化器根据由量化选择器选择的量化方法量化转换器发现的转换系数。 然后，编码器对由量化器量化的转换系数进行编码。

公开(公告)号：US5987182A

公开(公告)日：1999-11-16

申请号：US876484

申请日：1997-06-16

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

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

IPC分类号： H04N19/50 ,  G06T9/00 ,  H03M7/40 ,  H04N1/41 ,  H04N1/417 ,  H04N19/102 ,  H04N19/13 ,  H04N19/167 ,  H04N19/196 ,  H04N19/423 ,  H04N19/91 ,  G06K9/36

CPC分类号： G06T9/00

摘要： A plurality of reference pixel extracting means check their corresponding reference pixel ranges and pixel values in predetermined auxiliary regions. Reference pixel range selecting means selects a reference pixel range based on the checked pixel values. When the number of types of pixel values for an input image is found to be locally low in the selected reference pixel range, the number of reference pixels is increased. On the other hand, when the number of types of the pixel values for the input image is found to be locally large, the number of reference pixels is decreased. As a result, states can be generated by a Markov model image encoding system capable of improving encoding efficiency without increasing the number of the states sharply. Owing to the above construction, even when the number of tones for the input image is high upon Markov model image encoding, the number of reference pixels can be increased without abruptly increasing the number of states later on to improve compression efficiency.

摘要翻译： 多个参考像素提取装置在预定的辅助区域中检查其对应的参考像素范围和像素值。 参考像素范围选择装置基于所检查的像素值来选择参考像素范围。 当在所选择的参考像素范围中发现输入图像的像素值的数量在本地较低时，参考像素的数量增加。 另一方面，当发现输入图像的像素值的类型的数量局部地大时，参考像素的数量减少。 结果，可以通过能够提高编码效率的马尔可夫模型图像编码系统来生成状态，而不会急剧增加状态数。 由于上述结构，即使在马尔科夫模型图像编码时输入图像的色调数量高的情况下，也可以增加参考像素的数量而不会稍后突然增加状态数来提高压缩效率。

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。

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。

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。

公开(公告)号：US5754698A

公开(公告)日：1998-05-19

申请号：US760877

申请日：1996-12-09

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

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

IPC分类号： H03M7/30 ,  G06T9/00 ,  H04N1/41 ,  H04N1/415 ,  H04N7/54 ,  H04N19/124 ,  H04N19/132 ,  H04N19/134 ,  H04N19/136 ,  H04N19/14 ,  H04N19/176 ,  H04N19/189 ,  H04N19/40 ,  H04N19/423 ,  H04N19/46 ,  H04N19/59 ,  H04N19/60 ,  H04N19/70 ,  H04N19/85 ,  H04N19/91 ,  G06K9/36

CPC分类号： H04N7/54 ,  H04N19/00 ,  H04N19/117 ,  H04N19/126 ,  H04N19/176 ,  H04N19/18 ,  H04N19/40 ,  H04N19/59 ,  H04N19/94 ,  H04N19/124 ,  H04N19/13 ,  H04N19/132 ,  H04N19/60 ,  H04N19/91

摘要： An image signal encoding device which includes a code transforming unit. The code transforming unit includes a separation unit which separates mode information from first code data, a locally decoding unit which locally decodes the first code data using a decoding operation corresponding to the mode information and outputs locally decoded pixel block, and a second encoding unit which encodes the locally decoded pixel block using an encoding operation corresponding to the mode information and outputs second code data. According to the image signal encoding device, the first code data is re-encoded into the second code data having a higher compressibility so as to perform efficient data transmission and storage.

摘要翻译： 一种包括代码变换单元的图像信号编码装置。 代码变换单元包括：分离单元，其将模式信息与第一代码数据分离;本地解码单元，其使用与模式信息相对应的解码操作对第一代码数据进行本地解码并输出本地解码的像素块;以及第二编码单元， 使用对应于模式信息的编码操作对本地解码的像素块进行编码，并输出第二代码数据。 根据图像信号编码装置，将第一编码数据重新编码为具有较高可压缩性的第二编码数据，以便执行有效的数据传输和存储。

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。

公开(公告)号：US5446803A

公开(公告)日：1995-08-29

申请号：US365168

申请日：1994-12-28

申请人： Setsu Kunitake ,  Koh Kamizawa ,  Yutaka Koshi

发明人： Setsu Kunitake ,  Koh Kamizawa ,  Yutaka Koshi

IPC分类号： H04N1/387 ,  G06K9/32 ,  G06T3/60 ,  G06T7/60

CPC分类号： G06K9/3283

摘要： Disclosed is an image signal processing apparatus in which the position of an input image can be corrected easily irrespective of the shape of the input image by use of attribute information obtained from image information. Image information read by an image information reading unit is stored in an image information storage unit, and rectangular blocks are extracted sequentially from the image information by a block extracting unit. Shapes of images in the extracted blocks are analyzed by a block shape analyzing unit, and the analyzed block shapes are stored in a block shape storage unit. An image signal from the image information storage unit is displayed on an image signal display unit, and the analyzed block shapes from the block shape storage unit are displayed on another display unit. Instructions on position are given on the image signal display unit by a position instruction unit along the shape analysis result of image signals in the positions corresponding to the extracted blocks, to thereby correct the inclination of the input image signal.

摘要翻译： 公开了一种图像信号处理装置，其中通过使用从图像信息获得的属性信息，可以容易地校正输入图像的位置，而与输入图像的形状无关。 由图像信息读取单元读取的图像信息存储在图像信息存储单元中，并且通过块提取单元从图像信息中顺序地提取矩形块。 提取的块中的图像的形状由块形状分析单元分析，并且分析的块形状被存储在块形状存储单元中。 来自图像信息存储单元的图像信号被显示在图像信号显示单元上，并且来自块形状存储单元的分析块形状显示在另一个显示单元上。 通过位置指示单元沿图像信号的形状分析结果在与提取的块相对应的位置中在图像信号显示单元上给出位置指令，从而校正输入图像信号的倾斜度。