公开(公告)号：US08218196B2

公开(公告)日：2012-07-10

申请号：US12031559

申请日：2008-02-14

申请人： Michiko Fujiwara ,  Tomoe Matsuoka ,  Takashi Usui

发明人： Michiko Fujiwara ,  Tomoe Matsuoka ,  Takashi Usui

IPC分类号： G06F15/00

CPC分类号： H04N1/6019 ,  H04N1/4076

摘要： In the case where an output value of a document reading section for at least any of R, G and B is out of a range between a first reference value and a second reference value due to a change in an output value of a reading device caused by an electrical noise, a change of supply voltage, etc. when a document is being read, a second color conversion table is created in accordance with the above change by expanding ranges in a first color conversion table, which ranges are around predetermined first and second reference values and included in regions of RGB color system associated respectively with predetermined tone values of Y, M and C. Using the second color conversion table thus obtained, a color conversion is carried out from the RGB color system into the YMC color system.

摘要翻译： 在由于读取装置的输出值的变化引起的R，G，B中的至少任一个的原稿读取部的输出值在第一基准值和第二基准值之间的范围内的情况下 通过电噪声，电源电压变化等，通过在第一颜色转换表中扩展范围，根据上述变化创建第二颜色转换表，该范围在第一颜色转换表中大约是预先确定的，并且 第二参考值，并且包括在分别与Y，M和C的预定色调值相关联的RGB颜色系统的区域中。使用由此获得的第二颜色转换表，从RGB颜色系统到YMC颜色系统执行颜色转换。

公开(公告)号：US20080198393A1

公开(公告)日：2008-08-21

申请号：US12031559

申请日：2008-02-14

申请人： Michiko Fujiwara ,  Tomoe Matsuoka ,  Takashi Usui

发明人： Michiko Fujiwara ,  Tomoe Matsuoka ,  Takashi Usui

IPC分类号： H04N1/60

CPC分类号： H04N1/6019 ,  H04N1/4076

摘要： In the case where an output value of a document reading section for at least any of R, G and B is out of a range between a first reference value and a second reference value due to a change in an output value of a reading device caused by an electrical noise, a change of supply voltage, etc. when a document is being read, a second color conversion table is created in accordance with the above change by expanding ranges in a first color conversion table, which ranges are around predetermined first and second reference values and included in regions of RGB color system associated respectively with predetermined tone values of Y, M and C. Using the second color conversion table thus obtained, a color conversion is carried out from the RGB color system into the YMC color system.

摘要翻译： 在由于读取装置的输出值的变化引起的R，G，B中的至少任一个的原稿读取部的输出值在第一基准值和第二基准值之间的范围内的情况下 通过电噪声，电源电压变化等，通过在第一颜色转换表中扩展范围，根据上述变化创建第二颜色转换表，该范围在第一颜色转换表中大约是预先确定的，并且 第二参考值，并且包括在分别与Y，M和C的预定色调值相关联的RGB颜色系统的区域中。使用由此获得的第二颜色转换表，从RGB颜色系统到YMC颜色系统执行颜色转换。

公开(公告)号：US20070252850A1

公开(公告)日：2007-11-01

申请号：US11790616

申请日：2007-04-26

申请人： Michiko Fujiwara ,  Tatsuya Tanaka ,  Norihide Yasuoka ,  Tomoe Matsuoka ,  Masahiro Okuyama

发明人： Michiko Fujiwara ,  Tatsuya Tanaka ,  Norihide Yasuoka ,  Tomoe Matsuoka ,  Masahiro Okuyama

IPC分类号： G09G5/02

CPC分类号： H04N19/186 ,  H04N1/646 ,  H04N19/60 ,  H04N19/85

摘要： Image processing method and image processing apparatus capable of reducing data volume further after JPEG compression are provided. RGB data is first converted into YUV data, and then scale conversion of luminance value and color-difference value of the YUV data is performed. Discrete cosine transform of the scale-converted YUV data is performed, and the data after the discrete cosine transform is coded into a Huffman code.

摘要翻译： 提供能够在JPEG压缩之后进一步减少数据量的图像处理方法和图像处理装置。 首先将RGB数据转换为YUV数据，然后执行YUV数据的亮度值和色差值的比例变换。 进行缩放变换的YUV数据的离散余弦变换，将离散余弦变换后的数据编码为霍夫曼码。

公开(公告)号：US08073251B2

公开(公告)日：2011-12-06

申请号：US12069771

申请日：2008-02-13

申请人： Tomoe Matsuoka ,  Michiko Fujiwara ,  Tatsuya Tanaka ,  Norihide Yasuoka

发明人： Tomoe Matsuoka ,  Michiko Fujiwara ,  Tatsuya Tanaka ,  Norihide Yasuoka

IPC分类号： G06K9/00 ,  G06K1/00 ,  G06F15/00 ,  H04N1/60 ,  G03F3/08

CPC分类号： G06K9/38 ,  G06K9/00442 ,  G06K2209/01

摘要： An image processing apparatus includes: a document type automatic classification section which determines whether input image data is image data for a text document or not; a newspaper document classification section which determines whether the input image data is image data for a newspaper document or not; a segmentation process section which identifies a page-background region in the input image data; and a color correction section for, if the input image data is classified as the text document and but not the newspaper document and if a page-background removal process is to be performed to the input image data, performing a first page-background removal process to the image data, but if the input image data is classified as the text document and the newspaper document, not performing the first page-background removal process to the image data. This makes it possible to prevent deterioration of visual sharpness of the text in the document image printed on the newspaper.

摘要翻译： 图像处理装置包括：文档类型自动分类部，其判断输入图像数据是否为文本文档的图像数据; 确定输入图像数据是否为报纸文件的图像数据的报纸文档分类部分; 识别输入图像数据中的页面背景区域的分割处理部分; 以及颜色校正部，用于如果输入图像数据被分类为文本文档而不是报纸文档，并且如果要对输入图像数据执行页面背景去除处理，则执行第一页面背景去除处理 对于图像数据，但是如果输入图像数据被分类为文本文档和报纸文档，则不对图像数据执行第一页面背景去除处理。 这使得可以防止打印在报纸上的文档图像中的文本的视觉清晰度的劣化。

公开(公告)号：US20080199076A1

公开(公告)日：2008-08-21

申请号：US12069771

申请日：2008-02-13

申请人： Tomoe Matsuoka ,  Michiko Fujiwara ,  Tatsuya Tanaka ,  Norihide Yasuoka

发明人： Tomoe Matsuoka ,  Michiko Fujiwara ,  Tatsuya Tanaka ,  Norihide Yasuoka

IPC分类号： G06K9/34

CPC分类号： G06K9/38 ,  G06K9/00442 ,  G06K2209/01

摘要： An image processing apparatus includes: a document type automatic classification section which determines whether input image data is image data for a text document or not; a newspaper document classification section which determines whether the input image data is image data for a newspaper document or not; a segmentation process section which identifies a page-background region in the input image data; and a color correction section for, if the input image data is classified as the text document and but not the newspaper document and if a page-background removal process is to be performed to the input image data, performing a first page-background removal process to the image data, but if the input image data is classified as the text document and the newspaper document, not performing the first page-background removal process to the image data. This makes it possible to prevent deterioration of visual sharpness of the text in the document image printed on the newspaper.

摘要翻译： 图像处理装置包括：文档类型自动分类部，其判断输入图像数据是否为文本文档的图像数据; 确定输入图像数据是否为报纸文件的图像数据的报纸文档分类部分; 识别输入图像数据中的页面背景区域的分割处理部分; 以及颜色校正部，用于如果输入图像数据被分类为文本文档而不是报纸文档，并且如果要对输入图像数据执行页面背景去除处理，则执行第一页面背景去除处理 对于图像数据，但是如果输入图像数据被分类为文本文档和报纸文档，则不对图像数据执行第一页面背景去除处理。 这使得可以防止打印在报纸上的文档图像中的文本的视觉清晰度的劣化。

公开(公告)号：US08428386B2

公开(公告)日：2013-04-23

申请号：US12265538

申请日：2008-11-05

申请人： Hideyoshi Yoshimura ,  Kyosuke Taka ,  Tomoe Matsuoka

发明人： Hideyoshi Yoshimura ,  Kyosuke Taka ,  Tomoe Matsuoka

IPC分类号： G06K9/40

CPC分类号： H04N1/58 ,  G06T5/008 ,  G06T5/20 ,  G06T5/40 ,  G06T2207/10024

摘要： A local density calculation section calculates a density of a pixel region with a predetermined size including a current point of an input image disposed at the center on the basis of a pixel value of the pixel region. A mixing ratio calculation section generates a coefficient set of coefficients α and β in accordance with a local density value calculated by the local density calculation section, and outputs the generated coefficients α and β to a weight process section. The weight process section multiplies an operation result obtained from the input image by a first filter operation section by the coefficient α, multiplies an operation result obtained from the input image by a second filter operation section by the coefficient β, adds the multiplied results to each other and outputs the result of addition as a process result of a spatial filter process section.

摘要翻译： 局部密度计算部分基于像素区域的像素值计算包括设置在中心的输入图像的当前点的具有预定尺寸的像素区域的浓度。 混合比计算部根据由局部密度计算部计算得到的局部密度值，生成系数α和β的系数集合，并将生成的系数α和β输出到加权处理部。 权重处理部分将通过第一滤波器操作部分从输入图像获得的操作结果乘以系数α，将通过第二滤波器操作部分从输入图像获得的运算结果乘以系数β，将相乘结果与每个 另外输出加法结果作为空间滤波处理部分的处理结果。

公开(公告)号：US07551320B2

公开(公告)日：2009-06-23

申请号：US11514211

申请日：2006-09-01

申请人： Tomoe Matsuoka ,  Tatsuya Tanaka ,  Kyosuke Taka

发明人： Tomoe Matsuoka ,  Tatsuya Tanaka ,  Kyosuke Taka

IPC分类号： G06F15/00

CPC分类号： H04N1/6022 ,  H04N1/6097

摘要： An image processing apparatus of the present invention includes: a signal correction means which corrects, in an RGB color space, RGB tone data which is RGB image data; and a comparison section which compares (i) a tonal value of a white point which is neither an origin nor maximum tonal values of R, G, and B in the RGB color space, and where tonal values of R, G, and B are identical to one another, with (ii) respective tonal values of R, G, B of the RGB tone data. (A) In case where the tonal values of R, G, and B are determined to be larger than the white point, the signal correction means corrects the tonal values of R, G, and B to be close to the white point. (B) In case where the tonal values of R, G, and B of the RGB tone data is determined to be smaller than the white point, the signal correction section corrects they tonal values of R, G, and B of the RGB tone data to be away from the white point. As a result, undercolor processing is precisely executed while the color reproducibility in a highlight is maintained.

摘要翻译： 本发明的图像处理装置包括：信号校正装置，其在RGB颜色空间中校正作为RGB图像数据的RGB色调数据; 和比较部分，其比较（i）在RGB颜色空间中既不是原点也不是R，G和B的最大色调值的白点的色调值，并且R，G和B的色调值是 与（ii）RGB色调数据的R，G，B的各自的色调值相同。 （A）当确定R，G和B的色调值大于白点的情况下，信号校正装置将R，G和B的色调值校正为接近于白点。 （B）当RGB色调数据的R，G和B的色调值被确定为小于白点的情况下，信号校正部分校正RGB色调的R，G和B的色调值 数据远离白点。 结果，在保持高亮度的颜色再现性的同时精确地执行底色处理。

公开(公告)号：US20070052988A1

公开(公告)日：2007-03-08

申请号：US11514211

申请日：2006-09-01

申请人： Tomoe Matsuoka ,  Tatsuya Tanaka ,  Kyosuke Taka

发明人： Tomoe Matsuoka ,  Tatsuya Tanaka ,  Kyosuke Taka

IPC分类号： G06F15/00

CPC分类号： H04N1/6022 ,  H04N1/6097

摘要： An image processing apparatus of the present invention includes: a signal correction means which corrects, in an RGB color space, RGB tone data which is RGB image data; and a comparison section which compares (i) a tonal value of a white point which is neither an origin nor maximum tonal values of R, G, and B in the RGB color space, and where tonal values of R, G, and B are identical to one another, with (ii) respective tonal values of R, G, B of the RGB tone data. (A) In case where the tonal values of R, G, and B are determined to be larger than the white point, the signal correction means corrects the tonal values of R, G, and B to be close to the white point. (B) In case where the tonal values of R, G, and B of the RGB tone data is determined to be smaller than the white point, the signal correction section corrects they tonal values of R, G, and B of the RGB tone data to be away from the white point. As a result, undercolor processing is precisely executed while the color reproducibility in a highlight is maintained.

摘要翻译： 本发明的图像处理装置包括：信号校正装置，其在RGB颜色空间中校正作为RGB图像数据的RGB色调数据; 和比较部分，其比较（i）在RGB颜色空间中既不是原点也不是R，G和B的最大色调值的白点的色调值，并且R，G和B的色调值是 与（ii）RGB色调数据的R，G，B的各自的色调值相同。 （A）当确定R，G和B的色调值大于白点的情况下，信号校正装置将R，G和B的色调值校正为接近于白点。 （B）当RGB色调数据的R，G和B的色调值被确定为小于白点的情况下，信号校正部分校正RGB色调的R，G和B的色调值 数据远离白点。 结果，在保持高亮度的颜色再现性的同时精确地执行底色处理。

公开(公告)号：US06353716B1

公开(公告)日：2002-03-05

申请号：US09667591

申请日：2000-09-22

申请人： Makoto Uehara ,  Yasutaka Maeda ,  Ken Yamagishi ,  Masayasu Narimatsu ,  Hiroji Kawamoto ,  Yuka Sakagami ,  Tomoe Matsuoka

发明人： Makoto Uehara ,  Yasutaka Maeda ,  Ken Yamagishi ,  Masayasu Narimatsu ,  Hiroji Kawamoto ,  Yuka Sakagami ,  Tomoe Matsuoka

IPC分类号： G03G1500

CPC分类号： G03G15/0849 ,  G03G15/0853 ,  G03G15/0887 ,  G03G15/5058

摘要： An image forming apparatus including a developing unit for stocking a developing agent containing toner and forming a toner image on a photosensitive medium with the developing agent, a toner supply unit for supplying the toner to the developing unit, a toner specific concentration detecting unit for detecting the toner specific concentration of the developing agent stocked in the developing unit, a humidity detecting unit for detecting humidity in the neighborhood of the developing unit, a storage unit for storing the humidity information detected by the humidity detecting unit, and a toner specific concentration correcting unit for controlling the toner supply amount of the toner supply unit on the basis of the humidity information stored to correct the toner specific concentration, wherein the toner specific concentration correcting unit compares newly-detected humidity with reference humidity corresponding to the humidity which is detected at the time when the developing agent is stocked into the developing unit or exchanged by new developing agent and which is stored in the storage unit, and corrects the toner specific concentration in accordance with the comparison result.

摘要翻译： 一种图像形成装置，包括用于将含有调色剂的显影剂放置在显影剂上并在感光介质上形成调色剂图像的显影单元，用于向显影单元供应调色剂的调色剂供应单元，用于检测调色剂的浓度检测单元 存储在显影单元中的显影剂的调色剂比浓度，用于检测显影单元附近的湿度的湿度检测单元，用于存储由湿度检测单元检测的湿度信息的存储单元和调色剂特定浓度校正 单元，用于基于存储的用于校正调色剂特定浓度的湿度信息来控制调色剂供给单元的调色剂供应量，其中调色剂特异性浓度校正单元将新检测到的湿度与对应于湿度的参考湿度进行比较， 显影剂的时间 插入显影单元或由新显影剂交换并存储在存储单元中，并根据比较结果校正调色剂特定浓度。