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1. 发明授权

US07664334B2 Image encoder, image encoding method, recording medium and computer data signal embodied in a carrier wave 有权
标题翻译：图像编码器，图像编码方法，记录介质和体现在载波中的计算机数据信号
公开(公告)号：US07664334B2
公开(公告)日：2010-02-16
申请号：US11543952
申请日：2006-10-06
申请人： Hideki Kobayashi , Kouichirou Hirao
发明人： Hideki Kobayashi , Kouichirou Hirao
IPC分类号： G06K9/36
CPC分类号： G06T9/005
摘要： A processor performs layout analysis, and classifies pieces of bitmap data into a character area and a picture area. The processor divides each of the character area and the picture area into a plurality of tiles having a predetermined shape, thereby creating a table including information representing either character attribute or picture attribute in association with each tile number. The processor performs scalar quantization for data of each tile using a quantization coefficient for characters or pictures, based on the created table. The processor encodes the data of each tile using an SNR progressive technique or a resolution progressive technique, and performs post quantization for the data using a quantization parameter for characters or pictures. Then, the processor stores the encoded data into a storage device.
摘要翻译：处理器执行布局分析，并将位图数据分成字符区域和图片区域。处理器将每个字符区域和图像区域划分成具有预定形状的多个图块，从而创建一个表格，该表格包括表示与每个瓦片号码相关联的字符属性或图片属性的信息。处理器使用基于所创建的表的字符或图片的量化系数对每个图块的数据执行标量量化。处理器使用SNR逐行技术或分辨率逐行技术对每个瓦片的数据进行编码，并且使用用于字符或图片的量化参数对数据进行后量化。然后，处理器将编码的数据存储到存储设备中。

2. 发明申请

US20070025629A1 Image encoder, image encoding method, recording medium and computer data signal embodied in a carrier wave 有权
标题翻译：图像编码器，图像编码方法，记录介质和体现在载波中的计算机数据信号
公开(公告)号：US20070025629A1
公开(公告)日：2007-02-01
申请号：US11543952
申请日：2006-10-06
申请人： Hideki Kobayashi , Kouichirou Hirao
发明人： Hideki Kobayashi , Kouichirou Hirao
IPC分类号： G06K9/36 , G06K9/34
CPC分类号： G06T9/005
摘要： A processor performs layout analysis, and classifies pieces of bitmap data into a character area and a picture area. The processor divides each of the character area and the picture area into a plurality of tiles having a predetermined shape, thereby creating a table including information representing either character attribute or picture attribute in association with each tile number. The processor performs scalar quantization for data of each tile using a quantization coefficient for characters or pictures, based on the created table. The processor encodes the data of each tile using an SNR progressive technique or a resolution progressive technique, and performs post quantization for the data using a quantization parameter for characters or pictures. Then, the processor stores the encoded data into a storage device.
摘要翻译：处理器执行布局分析，并将位图数据分成字符区域和图片区域。处理器将每个字符区域和图像区域划分成具有预定形状的多个图块，从而创建一个表格，该表格包括表示与每个瓦片号码相关联的字符属性或图片属性的信息。处理器使用基于所创建的表的字符或图片的量化系数对每个图块的数据执行标量量化。处理器使用SNR逐行技术或分辨率逐行技术对每个瓦片的数据进行编码，并且使用用于字符或图片的量化参数对数据进行后量化。然后，处理器将编码的数据存储到存储设备中。

3. 发明授权

US07139428B2 Image encoder, image encoding method, recording medium and computer data signal embodied in a carrier wave 有权
公开(公告)号：US07139428B2
公开(公告)日：2006-11-21
申请号：US10190505
申请日：2002-07-09
申请人： Hideki Kobayashi , Kouichirou Hirao
发明人： Hideki Kobayashi , Kouichirou Hirao
IPC分类号： G06K9/34 , G06K9/46 , H04N1/60 , H04N1/41
CPC分类号： G06T9/005
摘要： A processor performs layout analysis, and classifies pieces of bitmap data into a character area and a picture area. The processor divides each of the character area and the picture area into a plurality of tiles having a predetermined shape, thereby creating a table including information representing either character attribute or picture attribute in association with each tile number. The processor performs scalar quantization for data of each tile using a quantization coefficient for characters or pictures, based on the created table. The processor encodes the data of each tile using an SNR progressive technique or a resolution progressive technique, and performs post quantization for the data using a quantization parameter for characters or pictures. Then, the processor stores the encoded data into a storage device.

4. 发明授权

US06553144B1 Coding method and coding apparatus for bi-level document image 有权
标题翻译：双层文件图像的编码方法和编码装置
公开(公告)号：US06553144B1
公开(公告)日：2003-04-22
申请号：US09348455
申请日：1999-07-07
申请人： Kouichirou Hirao , Takahiro Hongu
发明人： Kouichirou Hirao , Takahiro Hongu
IPC分类号： G06K936
CPC分类号： G06T9/007
摘要： A coding method and a coding apparatus for bi-level document image which makes a high speed coding processing possible is provided. In the coding apparatus, an image reading processing section provides an image data reading means which reads bi-level image data from a RAM, a CX generating means which generates CX using image data in a line memory and a CX counting means which counts the number of appearance times of CX based on the CX generated by the CX generating means and the inputted bi-level image data. In the coding apparatus, a coding processing section provides a coding processing deciding means which decides to implement either of two kinds of coding processing, a normal coding means which implements a normal coding processing implementing a conventional JBIG algorithm and a high speed coding means which implements a high speed coding processing using the counted values. With this, at the case of the image having a large amount of white areas such as a bi-level document image, the efficiency of the coding processing is improved and as a result the high speed coding processing can be realized.
摘要翻译：提供了使高速编码处理成为可能的双层文件图像的编码方法和编码装置。在编码装置中，图像读取处理部分提供从RAM读取双电平图像数据的图像数据读取装置，使用行存储器中的图像数据生成CX的CX生成装置以及对数量进行计数的CX计数装置基于CX产生装置产生的CX的外观时间和输入的双电平图像数据。在编码装置中，编码处理部提供决定实现两种编码处理中的任一种的编码处理决定装置，实现常规JBIG算法的正常编码处理的正常编码装置和实现传统JBIG算法的高速编码装置使用计数值的高速编码处理。由此，在具有大量白色区域的图像的情况下，例如双层文档图像，编码处理的效率得到改善，结果可以实现高速编码处理。

5. 发明授权

US5999704A Image output apparatus 失效
标题翻译：图像输出装置
公开(公告)号：US5999704A
公开(公告)日：1999-12-07
申请号：US834299
申请日：1997-04-15
申请人： Kouichirou Hirao
发明人： Kouichirou Hirao
IPC分类号： B41J2/52 , B41J2/44 , H04N1/405 , G03G15/00
CPC分类号： H04N1/4056
摘要： In printing a pseudo half tone image, the pulse width of an image data pulse is reduced, so that when isolated dots in the image are printed, the isolated dot part become whitish and repeatability may be lowered. A region division section judges whether the data are binary data of characters or the pseudo half tone image data. For the pseudo half tone image data, a dot pattern identification section discriminates consecutive dots from isolated dots. An image data pulse control section controlls the pulse width of the image data pulse in accordance with the result of the identification. A printer engine performs print as output with each dot of which dimension is dependent on the controlled pulse width. Therefore when the image with characters and pictures mixed together is output, the printing as output can be performed in accordance with the character region and the pseudo half tone image region.
摘要翻译：在打印伪半色调图像时，图像数据脉冲的脉冲宽度被减小，使得当打印图像中的孤立点时，孤立的点部分变白，可重复性降低。区域划分部分判断数据是字符的二进制数据还是伪半色调图像数据。对于伪半色调图像数据，点图案识别部分从连续的点辨别连续的点。图像数据脉冲控制部根据识别结果控制图像数据脉冲的脉冲宽度。打印机引擎执行打印作为输出，每个点的尺寸取决于受控的脉冲宽度。因此，当输出具有混合在一起的字符和图像的图像时，可以根据字符区域和伪半色调图像区域执行作为输出的打印。

6. 发明授权

US06574367B1 Method and apparatus for pattern matching encoding 失效
标题翻译：用于模式匹配编码的方法和装置
公开(公告)号：US06574367B1
公开(公告)日：2003-06-03
申请号：US09003713
申请日：1998-01-07
申请人： Mitsutoshi Arai , Takahiro Hongu , Kouichirou Hirao
发明人： Mitsutoshi Arai , Takahiro Hongu , Kouichirou Hirao
IPC分类号： G06K946
CPC分类号： H04N1/4115
摘要： An apparatus for pattern matching encoding includes a pattern extracting unit for extracting patterns in input binary or multi-level image data, an accumulating/match-checking unit for accumulating each extracted pattern and executing a match-check thereof with patterns that have been accumulated, a line segment checking unit for checking each pixel in the match pattern or the extracted pattern as to which line segment in directions the pixel is positioned on, and an encoding unit for encoding the extracted pattern by selecting a template having an optimum form according to the result of the line segment checking. The codes in pattern matching encoding are reduced, and the efficiency of code transmission and code accumulation is improved.
摘要翻译：用于模式匹配编码的装置包括用于提取输入二进制或多级图像数据中的模式的模式提取单元，累积/匹配检查单元，用于累积每个提取的模式，并且执行其已经累积的模式的匹配检查，线段检查单元，用于检查匹配图案中的每个像素或提取的图案，关于像素所位于的方向上的哪个线段;以及编码单元，用于通过根据所述方法选择具有最佳形式的模板来对所提取的图案进行编码线段检查的结果。减少了模式匹配编码中的代码，提高了代码传输和代码累积的效率。

7. 发明授权

US06185330B2 Device and record medium for pattern matching encoding/decoding of binary still images 失效
标题翻译：用于二进制静止图像的模式匹配编码/解码的设备和记录介质
公开(公告)号：US06185330B2
公开(公告)日：2001-02-06
申请号：US09040406
申请日：1998-03-18
申请人： Kouichirou Hirao
发明人： Kouichirou Hirao
IPC分类号： G06K900
CPC分类号： H04N1/4115
摘要： A pattern matching encoding device for executing pattern matching encoding of binary still images and a pattern matching decoding device corresponding to the pattern matching encoding device are proposed. In the pattern matching encoding, each input pattern extracted from the input image is matched against library patterns in the library, and the input pattern is encoded using a matched library pattern as a reference pattern if the matched library pattern is found. The pattern matching encoding device comprises a pattern segmentation section for segmenting each of selected library patterns and the input pattern into two or more parts and thereby generating segmented library patterns and segmented input patterns, a matching section for matching each of the segmented input patterns against corresponding segmented library patterns, and a pattern combination section for generating a new library pattern by combining the segmented library patterns each of which has matched one of the segmented input patterns. The new library pattern is regarded as the matched library pattern and the input pattern is encoded using the new library pattern as the reference pattern. According to the devices, compression rate of the input patterns by encoding can be increased faster.
摘要翻译：提出了一种用于执行二进制静止图像的模式匹配编码的模式匹配编码装置和与模式匹配编码装置相对应的模式匹配解码装置。在模式匹配编码中，从输入图像提取的每个输入模式与库中的库模式匹配，并且如果找到匹配的库模式，则使用匹配的库模式作为参考模式对输入模式进行编码。模式匹配编码装置包括：图案分割部分，用于将所选择的库模式和输入模式中的每一个分割为两个或更多个部分，从而生成分段库模式和分段输入模式;匹配部分，用于将每个分割的输入模式与相应的分割库模式，以及模式组合部分，用于通过组合分割的库模式来生成新的库模式，每个库模式已经匹配了一个分割的输入模式。新库模式被视为匹配的库模式，并且使用新库模式作为参考模式对输入模式进行编码。根据这些装置，可以更快地增加通过编码的输入模式的压缩率。

8. 发明授权

US6122402A Pattern encoding and decoding method and encoder and decoder using the method 失效
标题翻译：模式编码和解码方法以及编码器和解码器的使用方法
公开(公告)号：US6122402A
公开(公告)日：2000-09-19
申请号：US984420
申请日：1997-12-03
申请人： Mitsutoshi Arai , Keiji Yamada , Toshihiko Okamura , Takahiro Hongu , Kouichirou Hirao
发明人： Mitsutoshi Arai , Keiji Yamada , Toshihiko Okamura , Takahiro Hongu , Kouichirou Hirao
IPC分类号： H04N19/00 , G06T9/00 , H03M7/40 , H03M7/42 , H04N1/41 , H04N1/411 , H04N19/103 , H04N19/196 , H04N19/20 , H04N19/423 , H04N19/426 , H04N19/46 , H04N19/70 , H04N19/90 , H04N19/91 , G06K9/36
CPC分类号： G06T9/001 , H04N1/4115 , H04N1/417
摘要： Pattern encoding is carried out by 1) substituting an index data of a registered pattern for a position data in a library with respect to an index data peculiar to each of the extracted patterns, 2) taking a difference between an off-set position data of the extracted pattern and an off-set position data of the registered pattern whereby an off-set position difference data is provided, and 3) encoding the position data and the off-set position difference data and providing an encoded data. A pattern extracting unit obtains the extracted patterns from image data. An accumulating/checking unit accumulates the extracted patterns as accumulated patterns, assigns indexes specific to the accumulated patterns, and checks each extracted pattern by comparison with the accumulated patterns. When an accumulated pattern is found to match the extracted pattern, the accumulating/checking unit provides a position data within a library instead of the index data, and also provides the off-set position difference data. When no pattern is found to match the accumulated pattern libraries, the accumulating/checking unit provides the off-set position data and bit map data of the extracted pattern to the encoding unit. The arrangement enables the reduction in codes in pattern encoding, thus improving the code transmission efficiency.
摘要翻译：通过以下方式进行图案编码：1）将登记图案的索引数据相对于每个所提取的图案特有的索引数据替换为库中的位置数据，2）取出所提取的模式的偏移位置数据所提取的图案和登记图案的偏离位置数据，由此提供偏移位置差异数据，以及3）对位置数据和偏离位置差异数据进行编码并提供编码数据。图案提取单元从图像数据中获取提取的图案。累积/检查单元将提取的图案累加为累积图案，分配针对累积图案的特定索引，并且通过与累积图案进行比较来检查每个提取的图案。当发现累积模式与所提取的模式相匹配时，累积/检查单元提供库内的位置数据而不是索引数据，并且还提供偏移位置差异数据。当没有发现与累积图案库匹配的图案时，累积/检查单元将提取的图案的偏移位置数据和位图数据提供给编码单元。该配置能够减少图案编码中的代码，从而提高代码传输效率。

9. 发明授权

US6016361A Method and apparatus for compressing binary data using pattern matching encoding 失效
标题翻译：使用模式匹配编码压缩二进制数据的方法和装置
公开(公告)号：US6016361A
公开(公告)日：2000-01-18
申请号：US964633
申请日：1997-11-05
申请人： Takahiro Hongu , Kouichirou Hirao
发明人： Takahiro Hongu , Kouichirou Hirao
IPC分类号： G06K9/68 , G06T7/00 , G06T9/00 , H03M7/42 , H04N1/411 , G06K9/36
CPC分类号： H04N1/4115
摘要： In a method and an apparatus for pattern matching encoding disclosed a font bit map library is provided separately from a temporary updating library, in which temporary bit map pattern data capable of being updated according to a character pattern cut out from input binary image data is stored. In the font bit map library is stored font bit map library pattern data of an input character pattern font or a font designated by the user. A pattern matching process on the character pattern, is executed by comparing the character pattern with temporary bit map pattern data and font bit map pattern data. The character pattern is newly registered in the temporary updating library, when it is judged as being matched with only the temporary bit map pattern or as being matched with neither of the temporary bit map pattern or the font bit map pattern. It is possible to improve data compressibility without sacrifice in image quality.
摘要翻译：在公开了用于模式匹配编码的方法和装置中，与临时更新库分离地提供字体位图库，其中存储能够根据从输入的二进制图像数据切出的字符模式更新的临时位图模式数据。在字体位图库中存储由用户指定的输入字符图案字体或字体的字体位图库模式数据。通过将字符图案与临时位图图案数据和字体位图图案数据进行比较来执行字符图案上的图案匹配处理。当判断为仅与临时位图图匹配或者与临时位图图案或字形位图图案都不匹配时，字符图案被新登记在临时更新库中。可以在不牺牲图像质量的情况下提高数据压缩率。

10. 发明授权

US07945095B2 Line segment detector and line segment detecting method 有权
标题翻译：线段检测器和线段检测方法
公开(公告)号：US07945095B2
公开(公告)日：2011-05-17
申请号：US11621821
申请日：2007-01-10
申请人： Kouichirou Hirao
发明人： Kouichirou Hirao
IPC分类号： G06K9/00
CPC分类号： G06K9/56 , G06K9/4609 , G06K2209/01 , G06T7/12 , G06T2207/30176
摘要： A line segment detector comprises a vertical line detecting part, a horizontal line detecting part, a left-to-right downward slanting line detecting part, a left-to-right upward slanting line detecting part, and a line-segment detecting/synthesizing section that calculates OR operation of output values from the vertical line detecting part, the horizontal line detecting part, the left-to-right downward slanting line detecting part, and the left-to-right upward slanting line detecting part. The line segment detector further comprises a re-determining unit comprising a second line-segment detecting part that sets a window to the detection result near the target pixel, counts the number of pixels whose detection result is determined as the line segment in the set window, determines, when the counted value is not smaller than a predetermined threshold value, that the pixel is a line segment.
摘要翻译：线段检测器包括垂直线检测部，水平线检测部，左右向下倾斜线检测部，左右上方倾斜线检测部和线段检测合成部其计算来自垂直线检测部，水平线检测部，左右向下倾斜线检测部和左右向上倾斜线检测部的输出值的运算。线段检测器还包括重新确定单元，其包括将目标像素附近的检测结果设置窗口的第二线段检测部件，将其检测结果被确定为设定窗口中的线段的像素数量进行计数当计数值不小于预定阈值时，确定像素是线段。

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