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公开(公告)号：EP0785669A3
公开(公告)日：1998-03-04
申请号：EP97200734.8
申请日：1991-12-17
摘要： Method and apparatus for efficiently encoding image data of a color facsimile or the like are provided. A specific color judgment unit discriminates a specific color portion such as white or blank portion of the image data inputted from an image input unit. An orthogonal transforming process is not executed to the blank block, thereby raising an encoding efficiency. A discrimination signal is subjected to a dynamic arithmetical encoding, thereby producing code data.
摘要翻译： 提供了用于有效编码彩色传真等的图像数据的方法和装置。 特定颜色判断单元区分从图像输入单元输入的图像数据的特定颜色部分，例如白色或空白部分。 不对空白块执行正交变换处理，由此提高编码效率。 鉴别信号经过动态算术编码，由此产生码数据。
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公开(公告)号：EP0491556A3
公开(公告)日：1992-11-04
申请号：EP91311717.2
申请日：1991-12-17
摘要： Method and apparatus for efficiently encoding image data of a color facsimile or the like are provided. A specific color judgment unit (4) discriminates a specific color portion such as white or blank portion of the image data inputted from an image input unit (1). An orthogonal transforming process (10) is not executed to the blank block, thereby raising an encoding efficiency. A discrimination signal is subjected to a dynamic arithmetical encoding (6), thereby producing code data.
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公开(公告)号：EP0357388A3
公开(公告)日：1991-11-06
申请号：EP89308749.4
申请日：1989-08-30
发明人： Kato, Shigeo , Yasuda, Yasuhiko , Ohsawa, Hidefumi
IPC分类号： H04N1/417
CPC分类号： G06T9/004 , H04N1/4172
摘要： In an image encoding method in which a pixel of interest is predicted with reference to a plurality of pixels near the pixel of interest to be encoded, and encoding is performed on the basis of coincidence/noncoincidence between the predicted pixel and the pixel of interest, a parameter for predicting a pixel is changed on the basis of a rate of coincidence/noncoincidence of the predicted pixel and the pixel of interest.
摘要翻译： 在参考在待编码的感兴趣像素附近的多个像素来预测感兴趣像素并且基于预测像素和感兴趣像素之间的一致/不一致来执行编码的图像编码方法中， 基于预测像素和感兴趣像素的一致/不一致来改变用于预测像素的参数。
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公开(公告)号：EP0785669B1
公开(公告)日：2005-08-10
申请号：EP97200734.8
申请日：1991-12-17
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公开(公告)号：EP0434429A2
公开(公告)日：1991-06-26
申请号：EP90314028.3
申请日：1990-12-20
摘要： The invention relates to an image processing apapratus having the function to encode or decode image data and discloses a technique in which an optimum encoding method is selected in accordance with the characteristics of an image and a high efficient encoding with little deterioration in image is executed.
摘要翻译： 本发明涉及具有对图像数据进行编码或解码的功能的图像处理解码器，并且公开了一种根据图像的特性选择最佳编码方法并执行图像劣化的高效编码的技术。
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公开(公告)号：EP0357386A2
公开(公告)日：1990-03-07
申请号：EP89308747.8
申请日：1989-08-30
发明人： Kato, Shigeo , Yasuda, Yasuhiko , Ohsawa, Hidefumi
IPC分类号： H04N1/411
CPC分类号： G06T3/4007 , H04N1/411 , H04N1/4172
摘要： An image encoding apparatus includes a smoothing circuit (11) for smoothing a binary image to be encoded, a binary-encoding circuit (12) for binary-encoding the image smoothed by the smoothing circuit, a sampling circuit (13) for sub-sampling the image binary-encoded by the binary-encoding circuit, and an encoding circuit (26) for encoding the binary image sub-sampled by the sampling circuit. A degree of smoothness (G) of an image by the smoothing circuit and a threshold value (T₁) for a binary-encoding operation of the binary-encoding circuit can be varied.
摘要翻译： 一种图像编码装置，包括用于平滑待编码的二进制图像的平滑电路（11），用于对由平滑电路平滑的图像进行二进制编码的二进制编码电路（12），用于进行子采样的采样电路 由二进制编码电路二进制编码的图像和用于对由采样电路进行二次采样的二进制图像进行编码的编码电路（26）。 可以改变平滑电路的图像的平滑度（G）和二进制编码电路的二进制编码操作的阈值（T1）。
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公开(公告)号：EP0785669A2
公开(公告)日：1997-07-23
申请号：EP97200734.8
申请日：1991-12-17
摘要： Method and apparatus for efficiently encoding image data of a color facsimile or the like are provided. A specific color judgment unit discriminates a specific color portion such as white or blank portion of the image data inputted from an image input unit. An orthogonal transforming process is not executed to the blank block, thereby raising an encoding efficiency. A discrimination signal is subjected to a dynamic arithmetical encoding, thereby producing code data.
摘要翻译： 提供了用于有效地编码彩色传真机等的图像数据的方法和装置。 特定颜色判断单元鉴别从图像输入单元输入的图像数据的特定颜色部分，例如白色或空白部分。 不对空白块执行正交变换处理，从而提高编码效率。 对判别信号进行动态算术编码，从而产生代码数据。
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公开(公告)号：EP0395394A3
公开(公告)日：1991-02-13
申请号：EP90304485.7
申请日：1990-04-25
IPC分类号： H04N1/417
摘要： There is provided an image encoding method in a facsimile apparatus or an image filing apparatus as an image communication apparatus. In this method, a color image signal which is expressed by a plurality of color component signals to be encoded is input, the input color image signal is converted into a bit stream signal, and the bit stream signal is encoded by the prediction encoding. A parameter for the prediction encoding is changed in accordance with the color image signal to be encoded. The encoding operation is executed adaptively to the color image signal to be encoded. By bit stream converting the binary color signal, the efficient encoding using the color correlation can be executed and an increase in data amount is prevented. By encoding the bit stream signal by using a dynamic arithmetic code, a binary color image can be efficiently encoded.
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公开(公告)号：EP0357388A2
公开(公告)日：1990-03-07
申请号：EP89308749.4
申请日：1989-08-30
发明人： Kato, Shigeo , Yasuda, Yasuhiko , Ohsawa, Hidefumi
IPC分类号： H04N1/417
CPC分类号： G06T9/004 , H04N1/4172
摘要： In an image encoding method in which a pixel of interest is predicted with reference to a plurality of pixels near the pixel of interest to be encoded, and encoding is performed on the basis of coincidence/noncoincidence between the predicted pixel and the pixel of interest, a parameter for predicting a pixel is changed on the basis of a rate of coincidence/noncoincidence of the predicted pixel and the pixel of interest.
摘要翻译： 在其中参照要编码的感兴趣像素附近的多个像素预测感兴趣像素并且基于预测像素和感兴趣像素之间的重合/不一致来执行编码的图像编码方法中， 基于预测像素和感兴趣像素的一致/不一致的速度来改变用于预测像素的参数。
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公开(公告)号：EP0357388B1
公开(公告)日：1997-10-22
申请号：EP89308749.4
申请日：1989-08-30
发明人： Kato, Shigeo , Yasuda, Yasuhiko , Ohsawa, Hidefumi
IPC分类号： H04N1/417
CPC分类号： G06T9/004 , H04N1/4172
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