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公开(公告)号：US6047087A
公开(公告)日：2000-04-04
申请号：US121914
申请日：1998-07-24
申请人： Shoji Imaizumi , Shigeru Moriya , Junji Nishigaki
发明人： Shoji Imaizumi , Shigeru Moriya , Junji Nishigaki
CPC分类号： G06T9/005
摘要： In an image processor, image data of red, green and blue are converted to image data of lightness and chromaticities, and they are divided into pixel blocks. Then, image data of each block are compressed to data having 4 gradation levels smaller than 256 levels of the image data by generalized block truncation coding. Then a capacity of image memory can be decreased. An attribute of the image data is decided for each block according to the compressed data. The attribute can be corrected by taking attributes of adjacent blocks into account. Edition of image data such as edge emphasis can be performed according to the attributes. The compressed data are further compressed by deleting data which can be specified according to the attribute.
摘要翻译： 在图像处理器中，将红色，绿色和蓝色的图像数据转换为亮度和色度的图像数据，并将其分割为像素块。 然后，通过广义块截断编码将每个块的图像数据压缩成具有小于256级图像数据的4个灰度级的数据。 然后可以减少图像存储器的容量。 根据压缩数据为每个块确定图像数据的属性。 可以通过考虑相邻块的属性来校正属性。 可以根据属性执行图像数据的版本，如边缘强调。 通过删除可以根据属性指定的数据来进一步压缩压缩数据。
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公开(公告)号：US06404919B1
公开(公告)日：2002-06-11
申请号：US09133803
申请日：1998-08-13
申请人： Junji Nishigaki , Shoji Imaizumi , Shigeru Moriya
发明人： Junji Nishigaki , Shoji Imaizumi , Shigeru Moriya
IPC分类号： G06K934
摘要： In an image processor, a decider decides based on image data of pixels included in a block whether the block has character attribute of non-character attribute, a first encoder encodes the image data with block truncation coding, and a second encoder encodes the image data which have been encoded by the first encoder. For a block of character attribute, the binarized data binarized by the binarizer are encoded by the first and second encoders. For a block of non-character attribute, the image data are encoded by the first and second encoders without binarization. In a different image processor, it is decide whether image data of pixels in an area consisting of a plurality of blocks are all character, all ground or mixture of character and ground. Then, an encoder encodes the image data in each block differently according to the decision.
摘要翻译： 在图像处理器中，决定器基于包括在块中的像素的图像数据来决定块是否具有非字符属性的字符属性，第一编码器使用块截断编码对图像数据进行编码，第二编码器对图像数据进行编码 其由第一编码器编码。 对于一个字符属性块，二进制数据二值化的二进制数据由第一和第二编码器编码。 对于非字符属性块，图像数据由第一和第二编码器编码，而不进行二值化。 在不同的图像处理器中，决定由多个块组成的区域中的像素的图像数据是否是全部字符，全部是字符和地面的混合。 然后，编码器根据该决定对每个块中的图像数据进行不同的编码。
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公开(公告)号：US5838455A
公开(公告)日：1998-11-17
申请号：US646118
申请日：1996-05-07
申请人： Shoji Imaizumi , Shigeru Moriya , Junji Nishigaki
发明人： Shoji Imaizumi , Shigeru Moriya , Junji Nishigaki
CPC分类号： G06T9/005
摘要： In an image processor, image data of red, green and blue are converted to image data of lightness and chromaticities, and they are divided into pixel blocks. Then, image data of each block are compressed to data having 4 gradation levels smaller than 256 levels of the image data by generalized block truncation coding. Then, a capacity of image memory can be decreased. An attribute of the image data is decided for each block according to the compressed data. The attribute can be corrected by taking attributes of adjacent blocks into account.
摘要翻译： 在图像处理器中，将红色，绿色和蓝色的图像数据转换为亮度和色度的图像数据，并将其分割为像素块。 然后，通过广义的块截断编码将每个块的图像数据压缩成具有小于256级图像数据的4个灰度级的数据。 然后，可以降低图像存储器的容量。 根据压缩数据为每个块确定图像数据的属性。 可以通过考虑相邻块的属性来校正属性。
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公开(公告)号：US20050088692A1
公开(公告)日：2005-04-28
申请号：US10973909
申请日：2004-10-27
申请人： Shoji Imaizumi , Junji Nishigaki , Kenichi Morita
发明人： Shoji Imaizumi , Junji Nishigaki , Kenichi Morita
CPC分类号： H04N1/56 , H04N2201/3288
摘要： In a system for variable-length coding, when image data of a plurality of documents are compressed and stored in a compression memory, the image data is divided into a plurality of areas. Then, attributes are discriminated for each area, and the result of the attribute discrimination is written to an attribute memory. Attribute counters count the numbers of the discriminated attributes. A variable-length compression section compresses the code data with a compression method in response to the attribute data written to the attribute memory, and the compressed data is written to a compression memory.
摘要翻译： 在用于可变长度编码的系统中，当多个文档的图像数据被压缩并存储在压缩存储器中时，图像数据被分成多个区域。 然后，对每个区域区分属性，并且将属性辨别的结果写入属性存储器。 属性计数器对所识别的属性的数量进行计数。 可变长度压缩部分响应于写入属性存储器的属性数据，利用压缩方法压缩代码数据，并将压缩数据写入压缩存储器。
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公开(公告)号：US06816618B1
公开(公告)日：2004-11-09
申请号：US09260807
申请日：1999-03-02
申请人： Shoji Imaizumi , Junji Nishigaki , Kenichi Morita
发明人： Shoji Imaizumi , Junji Nishigaki , Kenichi Morita
IPC分类号： G06K936
CPC分类号： H04N1/56 , H04N2201/3288
摘要： In a system for variable-length coding, when image data of a plurality of documents are compressed and stored in a compression memory, the image data is divided into a plurality of areas. Then, attributes are discriminated for each area, and the result of the attribute discrimination is written to an attribute memory. Attribute counters count the numbers of the discriminated attributes. A variable-length compression section compresses the code data with a compression method in response to the attribute data written to the attribute memory, and the compressed is written to a compression memory.
摘要翻译： 在用于可变长度编码的系统中，当多个文档的图像数据被压缩并存储在压缩存储器中时，图像数据被分成多个区域。 然后，对每个区域区分属性，并且将属性辨别的结果写入属性存储器。 属性计数器对所识别的属性的数量进行计数。 可变长度压缩部分响应于写入属性存储器的属性数据，利用压缩方法压缩代码数据，并将压缩的数据写入压缩存储器。
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公开(公告)号：US06593935B2
公开(公告)日：2003-07-15
申请号：US09295596
申请日：1999-04-22
申请人： Shoji Imaizumi , Junji Nishigaki , Kenichi Morita
发明人： Shoji Imaizumi , Junji Nishigaki , Kenichi Morita
IPC分类号： G09G500
摘要： In an image processor, after the background of input image data is removed, the image data are divided into a plurality of areas, and the attribute of image is discriminated for each area. The image data after the background removal is compressed according to the result of attribute discrimination. The amount of the background removal can be controlled. Preferably, the amount of the background removal is controlled according to the discriminated attribute. Then, the background can be removed without artificial feeling in a reproduced image.
摘要翻译： 在图像处理器中，在删除输入图像数据的背景之后，将图像数据划分为多个区域，并且针对每个区域区分图像的属性。 背景去除后的图像数据根据属性识别的结果进行压缩。 可以控制背景去除的量。 优选地，根据所识别的属性来控制背景去除的量。 然后，可以在再现的图像中没有人为的感觉去除背景。
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公开(公告)号：US07095898B2
公开(公告)日：2006-08-22
申请号：US10973909
申请日：2004-10-27
申请人： Shoji Imaizumi , Junji Nishigaki , Kenichi Morita
发明人： Shoji Imaizumi , Junji Nishigaki , Kenichi Morita
IPC分类号： G06K9/36
CPC分类号： H04N1/56 , H04N2201/3288
摘要： In a system for variable-length coding, when image data of a plurality of documents are compressed and stored in a compression memory, the image data is divided into a plurality of areas. Then, attributes are discriminated for each area, and the result of the attribute discrimination is written to an attribute memory. Attribute counters count the numbers of the discriminated attributes. A variable-length compression section compresses the code data with a compression method in response to the attribute data written to the attribute memory, and the compressed data is written to a compression memory.
摘要翻译： 在用于可变长度编码的系统中，当多个文档的图像数据被压缩并存储在压缩存储器中时，图像数据被分成多个区域。 然后，对每个区域区分属性，并且将属性辨别的结果写入属性存储器。 属性计数器对所识别的属性的数量进行计数。 可变长度压缩部分响应于写入属性存储器的属性数据，利用压缩方法压缩代码数据，并将压缩数据写入压缩存储器。
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公开(公告)号：US06538771B1
公开(公告)日：2003-03-25
申请号：US09009239
申请日：1998-01-20
IPC分类号： H04N1405
CPC分类号： G06T9/007 , G06T9/00 , H04N1/405 , H04N1/4105
摘要： In an image processor, multi-level image data are divided into blocks, and compressed in the unit of block. The compressed multi-level image data of a block are converted to compressed bi-level image data without expanding the multi-level image data. For example, the compressed multi-level image data on an image of uniform density are converted to compressed bi-level image data expressed with area gradation. In another image processor, the compressed multi-level image data of a block are converted to compressed multi-level image data, without expanding the multi-level image data. For example, the compressed multi-level image data on an image of bi-level image expressed with area gradation are converted to compressed multi-level image data of a half-tone image.
摘要翻译： 在图像处理器中，多级图像数据被分成块，并以块为单位进行压缩。 将块的压缩多级图像数据转换为压缩的双电平图像数据，而不扩展多级图像数据。 例如，将均匀密度的图像上的压缩的多级图像数据转换成以区域灰度表示的压缩双电平图像数据。 在另一图像处理器中，块的压缩多级图像数据被转换为压缩多级图像数据，而不扩展多级图像数据。 例如，将以区域灰度表示的双电平图像的图像上的压缩多级图像数据转换为半色调图像的压缩多级图像数据。
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公开(公告)号：US06298168B1
公开(公告)日：2001-10-02
申请号：US09260089
申请日：1999-03-02
申请人： Junji Nishigaki , Shoji Imaizumi , Kenichi Morita
发明人： Junji Nishigaki , Shoji Imaizumi , Kenichi Morita
IPC分类号： G06K936
CPC分类号： G06T9/00
摘要： In an image coding apparatus for encoding and decoding multi-level image data with block truncation coding, multi-level image data is divided into second blocks (e.g., 6*6 pixels) which is larger in size than a first block (e.g., 4*4 pixels) to be coded. Average value and gradation level amplitude are calculated on a second block, and encoding and decoding are performed on a first block by using the average value and gradation level amplitude. When a pixel not adjacent to the first block is included in an end of the image or the like in a second block, data of the actual pixels are used for the pixels having no data. Thus, deterioration of the image quality can be reduced.
摘要翻译： 在利用块截断编码对多级图像数据进行编码和解码的图像编码装置中，将多级图像数据分割为比第一块大的尺寸（例如，6×6像素）的第二块（例如，6×6像素） * 4像素）进行编码。 在第二块上计算平均值和灰度级幅度，并且通过使用平均值和灰度级幅度在第一块上执行编码和解码。 当与第一块不相邻的像素被包括在第二块中的图像等的末尾时，实际像素的数据被用于没有数据的像素。 因此，可以降低图像质量的劣化。
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10.发明授权
公开(公告)号：US5987175A
公开(公告)日：1999-11-16
申请号：US648834
申请日：1996-05-16
CPC分类号： H04N1/41
摘要： An image forming apparatus includes an encode process unit for: (a) allocating image data of an original document into blocks containing a predetermined pixel matrix, and (b) determining from the image data in each block a mean value information and a gradient range exponent for each block; a series copy data generating unit for generating reduction image data for a plurality of reduction images by using the mean value information for each of the blocks as image data for the reduction images so that each pixel of the reduction images corresponds to a respective one of the plurality of blocks of the original document image data; and an image forming unit for forming images based on the reduction image data generated by the series copy data generating unit.
摘要翻译： 一种图像形成装置包括：编码处理单元，用于：（a）将原始文档的图像数据分配成包含预定像素矩阵的块，以及（b）从每个块中的图像数据确定平均值信息和梯度范围指数 对于每个块; 串行复制数据生成单元，用于通过使用每个块的平均值信息来生成用于多个缩小图像的缩小图像数据，作为缩小图像的图像数据，使得缩小图像的每个像素对应于 原始图像数据的多个块; 以及图像形成单元，用于基于由串联复制数据生成单元生成的缩小图像数据形成图像。
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