Image recognition method and device and copier and scanner employing same
    4.
    发明授权
    Image recognition method and device and copier and scanner employing same 失效
    图像识别方法和装置以及使用它的复印机和扫描仪

    公开(公告)号:US06188787B1

    公开(公告)日:2001-02-13

    申请号:US08826701

    申请日:1997-04-07

    IPC分类号: G06K978

    摘要: An image recognition method and device detects an object mark reliably even when the mark is defaced with a different color. RGB signals are transmitted to color extraction unit. The color extraction unit has a characteristic color extraction block to extract the characteristic color of the object mark. A binary image is generated from the extracted pixels which are the color of the mark and stored in storage device. A mark detection unit detects the location of the mark in the stored image data and an image extraction unit extracts the region where the mark is located and obtains a feature count. A matching unit compares the feature count with a reference pattern and finds the goodness of fit. A control unit subjects the goodness of fit value to threshold value processing to determine whether this is a nonreproducible document. If the mark has been defaced with black ink, the pixels constituting the mark are extracted by a likely color extraction block. A binary image is generated and stored in storage device. Thus, the defaced mark can undergo the same recognition processing as the normal mark, and both can be recognized.

    摘要翻译: 即使当标记被不同颜色污染时,图像识别方法和装置可靠地检测对象标记。 RGB信号被传送到颜色提取单元。 颜色提取单元具有特征颜色提取块,以提取对象标记的特征颜色。 从作为标记的颜色的提取像素生成二值图像并存储在存储装置中。 标记检测单元检测所存储的图像数据中的标记的位置,并且图像提取单元提取标记所在的区域并获得特征数。 匹配单元将特征计数与参考模式进行比较,并找到拟合优度。 控制单元对拟合值进行阈值处理,以确定这是否是不可再现的文档。 如果标记已被黑色油墨弄脏,则构成标记的像素由可能的颜色提取块提取。 二进制图像生成并存储在存储设备中。 因此,污损标记可以进行与正常标记相同的识别处理,并且都可以识别。

    Image processing device for detecting one-color marks of a number of colors and image processing method thereof
    5.
    发明授权
    Image processing device for detecting one-color marks of a number of colors and image processing method thereof 失效
    用于检测多种颜色的单色标记的图像处理装置及其图像处理方法

    公开(公告)号:US06298150B1

    公开(公告)日:2001-10-02

    申请号:US08675490

    申请日:1996-07-01

    IPC分类号: G06K900

    摘要: To provide an image processing device able to accurately discriminate a specified image in an input image data, the input image is converted to binary based on black and red color extraction blocks 6−1 and 6−2 in binary processing unit 1. These binary data are consolidated by an OR circuit and stored in storage device 2. Mark location detection unit 3 extracts a square mark from the image data stored in device 2. Pattern shape extraction unit 4 extracts another mark which is inside the square mark. Pattern matching unit 5 obtains and outputs the goodness of fit between the extracted marks and previously established marks.

    摘要翻译: 为了提供能够准确地识别输入图像数据中的指定图像的图像处理装置,基于二进制处理单元1中的黑色和红色提取块6-1和6-2将输入图像转换为二进制。这些二进制数据 由OR电路合并并存储在存储装置2中。标记位置检测单元3从存储在装置2中的图像数据中提取方形标记。图案形状提取单元4提取方形标记内的另一标记。 模式匹配单元5获得并输出提取的标记与先前建立的标记之间的拟合优点。

    Image processing device and method for identifying an input image, and
copier scanner and printer including same
    6.
    发明授权
    Image processing device and method for identifying an input image, and copier scanner and printer including same 失效
    用于识别输入图像的图像处理装置和方法,以及包括其的复印机扫描仪和打印机

    公开(公告)号:US5845008A

    公开(公告)日:1998-12-01

    申请号:US376142

    申请日:1995-01-20

    摘要: An image processing device is disclosed which can reliably detect documents which may not be copied, which has a very small probability of false positives, and which can handle newly issued documents which may not be copied. In addition, an image processing scheme is disclosed which would accurately obtain the location of a pattern indicating a document to be detected; which would extract that pattern; which would determine correctly whether it is the right pattern; and which would make it difficult for anyone to tamper with the pattern. To achieve this, a specified pattern is imprinted before use on a document which may not be copied, and a previously specified number of positioning marks and dummy marks which identify the location of the pattern may also be imprinted. The device is able to detect a wide variety of documents and perform the required processing at high speed.

    摘要翻译: 公开了一种图像处理装置,其可以可靠地检测可能不被复制的文档,其具有非常小的误报概率,并且可以处理可能不被复制的新发布的文档。 此外,公开了一种图像处理方案,其将准确地获得指示要检测的文档的图案的位置; 这将提取该模式; 这是否正确地确定是否是正确的模式; 这将使任何人难以篡改图案。 为了实现这一点,在使用之前将指定的图案印在可能不被复制的文档上,并且还可以打印用于标识图案的位置的先前指定数量的定位标记和伪标记。 该设备能够检测各种文档并高速执行所需的处理。

    Image processing method and device and scanner and printer equipped with
same
    7.
    发明授权
    Image processing method and device and scanner and printer equipped with same 失效
    图像处理方法及装置及扫描仪及打印机配套

    公开(公告)号:US6115494A

    公开(公告)日:2000-09-05

    申请号:US672340

    申请日:1996-06-28

    摘要: A method and apparatus to detect marks of a specified shape and color on a document and to extract a specified pattern consisting of a number of these marks. An RGB color signal is sent, color by color, by way of image input unit 12 to binary processing unit 13. If the marks are yellow, the B signal for the pixels constituting the marks will be smaller than the other signals. The B signal is sent to mark shape extraction unit 13a and threshold processing is executed. Simultaneously, R, G and B are sent to mark color extraction unit 13b, and the fact that the marks are yellow is detected. AND element 13c finds the logical product of these processes, and a binary image is generated from which only the yellow pixels have been extracted. This binary image is transmitted to mark location detection unit 15 by way of storage unit 14. The shapes of the marks are matched against reference data and location data are extracted for the marks. The location data are transmitted to pattern location matching unit 17 by way of storage unit 16. The goodness of fit representing whether the marks are in specified locations is obtained and output.

    摘要翻译: 一种检测文档上指定形状和颜色的标记并提取由多个这些标记组成的指定图案的方法和装置。 RGB颜色信号通过图像输入单元12逐个颜色发送到二进制处理单元13.如果标记为黄色,则构成标记的像素的B信号将小于其他信号。 将B信号发送到标记形状提取单元13a,并执行阈值处理。 同时,R,G和B被发送到标记颜色提取单元13b,并且检测到标记是黄色的事实。 AND元素13c找到这些处理的逻辑积,并且生成仅从其中提取了黄色像素的二进制图像。 该二进制图像通过存储单元14发送到标记位置检测单元15.标记的形状与参考数据匹配,并为标记提取位置数据。 位置数据通过存储单元16发送到模式位置匹配单元17.获得并输出表示标记是否在指定位置的拟合优点。

    Image processing device for detecting one-color marks of a number of colors and image processing method thereof
    8.
    发明授权
    Image processing device for detecting one-color marks of a number of colors and image processing method thereof 有权
    用于检测多种颜色的单色标记的图像处理装置及其图像处理方法

    公开(公告)号:US06888962B1

    公开(公告)日:2005-05-03

    申请号:US09712977

    申请日:2000-11-16

    摘要: To provide an image processing device able to accurately discriminate a specified image in an input image data, the input image is converted to binary based on black and red color extraction blocks 6-1 and 6-2 in binary processing unit 1. These binary data are consolidated by an OR circuit and stored in storage device 2. Mark location detection unit 3 extracts a square mark from the image data stored in device 2. Pattern shape extraction unit 4 extracts another mark which is inside the square mark. Pattern matching unit 5 obtains and outputs the goodness of fit between the extracted marks and previously established marks.

    摘要翻译: 为了提供能够准确地识别输入图像数据中的指定图像的图像处理装置,基于黑色和红色提取块6< 1>和6> - 将输入图像转换为二进制, 2二进制数据由OR电路合并并存储在存储装置2中。标记位置检测单元3从存储在装置2中的图像数据中提取方形标记。图案形状提取单元4 提取正方形标记内的另一个标记。 模式匹配单元5获得并输出提取的标记与先前建立的标记之间的拟合优点。

    Image processing device and method for indentifying an input image, and copier scanner and printer including same
    9.
    发明授权
    Image processing device and method for indentifying an input image, and copier scanner and printer including same 失效
    用于识别输入图像的图像处理装置和方法,以及包括其的复印机扫描仪和打印机

    公开(公告)号:US06289125B1

    公开(公告)日:2001-09-11

    申请号:US09005001

    申请日:1998-01-09

    IPC分类号: G06K962

    摘要: An image processing device is disclosed which can reliably detect documents which may not be copied, which has a very small probability of false positives, and which can handle newly issued documents which may not be copied. In addition, an image processing scheme is disclosed which would accurately obtain the location of a pattern indicating a document to be detected; which would extract that pattern; which would determine correctly whether it is the right pattern; and which would make it difficult for anyone to tamper with the pattern. To achieve this, a specified pattern is imprinted before use on a document which may not be copied, and a previously specified number of positioning marks and dummy marks which identify the location of the pattern may also be imprinted. The device is able to detect a wide variety of documents and perform the required processing at high speed.

    摘要翻译: 公开了一种图像处理装置,其可以可靠地检测可能不被复制的文档,其具有非常小的误报概率,并且可以处理可能不被复制的新发布的文档。 此外,公开了一种图像处理方案,其将准确地获得指示要检测的文档的图案的位置; 这将提取该模式; 这是否正确地确定是否是正确的模式; 这将使任何人难以篡改图案。 为了实现这一点,在使用之前将指定的图案印在可能不被复制的文档上,并且还可以打印用于标识图案的位置的先前指定数量的定位标记和伪标记。 该设备能够检测各种文档并高速执行所需的处理。

    Image reader with adjustable contrast range
    10.
    发明授权
    Image reader with adjustable contrast range 失效
    具有可调整对比度范围的图像读取器

    公开(公告)号:US5329111A

    公开(公告)日:1994-07-12

    申请号:US904053

    申请日:1992-06-26

    摘要: An image input device photoelectrically reads a document and outputs digital data. This image reader includes a first voltage generating circuit for generating a first voltage for setting an upper limit of contrast, a second voltage generating circuit for generating a second voltage for setting a lower limit of contrast, and an A/D converter for converting an input analog signal to a digital signal in accordance with the first and second voltages. At least one of the voltages generated by the first voltage generating circuit and second voltage generating circuit is variable. Also disclosed is an image reader including a dark voltage memory circuit, storing dark voltages corresponding to color signals R, G and B, a first switching circuit sequentially switching the output of the dark voltage memory circuit and outputting a selected dark voltage, a second switching circuit adapted to synchronously output a selected color signal corresponding to the selected dark voltage, and a differential amplifier subtracting the selected dark voltage from said selected color signal.

    摘要翻译: 图像输入装置光电读取文件并输出数字数据。 该图像读取器包括用于产生用于设定对比度上限的第一电压的第一电压产生电路,用于产生用于设置对比度下限的第二电压的第二电压产生电路,以及用于转换输入的A / D转换器 根据第一和第二电压对数字信号进行模拟信号。 由第一电压产生电路和第二电压产生电路产生的电压中的至少一个是可变的。 还公开了一种图像读取器,其包括暗电压存储电路,存储对应于彩色信号R,G和B的暗电压,第一开关电路依次切换暗电压存储电路的输出并输出选择的暗电压,第二开关 电路,其适于同步地输出对应于所选择的暗电压的选定颜色信号,以及差分放大器,从所述选择的颜色信号中减去所选择的暗电压。