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    • 7. 发明授权
    • Method for determining orientation of contour line segment in local area
and for determining straight line and corner
    • 确定局部区域轮廓线段方位和确定直线和拐角的方法
    • US5668893A
    • 1997-09-16
    • US676512
    • 1996-07-08
    • Shinji KandaJun WakitaniTsugito MaruyamaToshihiko Morita
    • Shinji KandaJun WakitaniTsugito MaruyamaToshihiko Morita
    • G06K9/46G06T5/00G06T5/20G06T7/00
    • G06K9/4633G06K9/4609G06T5/20G06T7/0042G06T7/0083G06T7/0085
    • The present invention relates to a method for determining an orientation of a line segment in a contour in a local area of a binary contour image. The number of pixels having a predetermined value and located in each orientation in the local area, is obtained, and it is determined that a line segment exists in an orientation in which the number of pixels is large. Further, when it is determined that the number of pixels located in each of a plurality of orientations and having a predetermined value is greater than a sum of the numbers of pixels in orientations adjacent to said each orientation on both sides thereof, it is determined that a line segment exists in said each orientation. Two orientations in which large numbers of pixels are located are detected, and it is determined whether the point is a constituent of a line segment, a line segment of the sub-straight-line form, or a near-corner point, depending on angles made by the two orientations is equal to 180.degree., or a difference of the angles made by the two orientations from 180.degree.. Contiguously arrayed pixels in the same orientation are detected as a line segment. A position and an orientation are obtained from points near a corner, and representative values of the positions and orientations of contiguously arrayed near-corner points are determined.
    • 本发明涉及一种用于确定二进制轮廓图像的局部区域中的轮廓中的线段的取向的方法。 获得具有预定值并位于局部区域中的每个取向的像素数,并且确定在像素数量大的取向中存在线段。 此外,当确定位于多个取向中的并且具有预定值的每个中的像素的数量大于其两侧上与所述每个取向相邻的取向中的像素数的总和时,确定 在所述每个取向上存在线段。 检测到其中存在大量像素的两个取向,并且根据角度确定该点是线段,亚直线形式的线段还是近角点的组成 由两个取向制成的角度等于180°,或者两个方向的角度与180°的差。 以相同方向连续排列的像素被检测为线段。 从拐角附近的点获得位置和取向,并且确定连续排列的近角点的位置和取向的代表值。
    • 8. 发明授权
    • Method for determining orientation of contour line segment in local area
and for determining straight line and corner
    • 确定局部区域轮廓线段方位和确定直线和拐角的方法
    • US5586199A
    • 1996-12-17
    • US70450
    • 1993-06-02
    • Shinji KandaJun WakitaniTsugito MaruyamaToshihiko Morita
    • Shinji KandaJun WakitaniTsugito MaruyamaToshihiko Morita
    • G06K9/46G06T5/00G06T5/20G06T7/00
    • G06K9/4633G06K9/4609G06T5/20G06T7/0042G06T7/0083G06T7/0085
    • The present invention relates to a method for determining an orientation of a line segment in a contour in a local area of a binary contour image. The number of pixels having a predetermined value and located in each orientation in the local area, is obtained, and it is determined that a line segment exists in an orientation in which the number of pixels is large. Further, when it is determined that the number of pixels located in each of a plurality of orientations and having a predetermined value is greater than a sum of the numbers of pixels in orientations adjacent to said each orientation on both sides thereof, it is determined that a line segment exists in said each orientation. Two orientations in which large numbers of pixels are located are detected, and it is determined whether the point is a constituent of a line segment, a line segment of the sub-straight-line form, or a near-corner point, depending on angles made by the two orientations is equal to 180.degree., or a difference of the angles made by the two orientations from 180.degree.. Contiguously arrayed pixels in the same orientation are detected as a line segment. A position and an orientation are obtained from points near a corner, and representative values of the positions and orientations of contiguously arrayed near-corner points are determined.
    • PCT No.PCT / JP92 / 01277 Sec。 371日期:1993年6月6日 102(e)日期1993年6月6日PCT提交1992年10月2日PCT公布。 出版物WO93 / 07580 日期:1993年04月15日本发明涉及一种用于确定二值轮廓图像的局部区域中的轮廓中的线段的取向的方法。 获得具有预定值并位于局部区域中的每个取向的像素数,并且确定在像素数量大的取向中存在线段。 此外,当确定位于多个取向中的并且具有预定值的每个中的像素的数量大于其两侧上与所述每个取向相邻的取向中的像素数的总和时,确定 在所述每个取向上存在线段。 检测到其中存在大量像素的两个取向,并且根据角度确定该点是线段,亚直线形式的线段还是近角点的组成 由两个取向制成的角度等于180°,或者两个方向的角度与180°的差。 以相同方向连续排列的像素被检测为线段。 从拐角附近的点获得位置和取向,并且确定连续排列的近角点的位置和取向的代表值。
    • 9. 发明授权
    • Method and apparatus for measuring position and orientation of an object
based on a sequence of projected points
    • 基于投影点序列测量物体的位置和方位的方法和装置
    • US5446798A
    • 1995-08-29
    • US201082
    • 1994-02-24
    • Toshihiko MoritaSusumu Kawakami
    • Toshihiko MoritaSusumu Kawakami
    • G06T7/00G06K9/00
    • G06T7/0042G06T7/0022G06T7/0075
    • A method for measuring a position and an orientation of an object. A sequence of movement points which line up on an intersection line of a predetermined projection surface and a plane which contains a predetermined projection center corresponding to a position of a camera, is obtained by obtaining projected points respectively generated for a plurality of positions of the camera, onto a point on the predetermined projection surface where the camera position is deemed as the projection center. Then, a sequence of reference points which line up on an intersection line of a plane containing the center of projection and the predetermined projection surface, shares a point with the sequence of movement points, and has the same cross ratio (inharmonic ratio) as a cross ratio of the sequence of movement points, is generated. An intersection point of intersection lines which are respectively intersection lines of the predetermined projection surface and planes each containing the center of projection and a pair of corresponding points one of which belongs to the sequence of movement points, and the other of which belongs to the sequence of reference points, is obtained. Then, geometrical information on the image element of the object when using the projection center in the three-dimensional space as a reference position is obtained based on the position of the above intersection point.
    • 一种用于测量物体的位置和取向的方法。 通过获得分别为相机的多个位置生成的投影点,获得在预定投影表面的交线上排列的运动点序列和包含与相机位置对应的预定投影中心的平面 在相机位置被认为是投影中心的预定投影表面上的点上。 然后,在包含投影中心和预定投影面的平面的交线上排列的参考点序列与运动点的序列共享点,并且具有相同的交叉比(非谐波比),如 产生运动点序列的交叉比。 分别与预定的投影面的交点线和投影中心的平面的交点相交点和一个对应的点属于运动点的序列,另一个属于序列 的参考点。 然后,基于上述交叉点的位置,求出当使用三维空间中的投影中心作为基准位置时对象的图像元素的几何信息。
    • 10. 发明授权
    • Error correction device, encoder, decoder, method, and information storage device
    • 纠错装置,编码器,解码器,方法和信息存储装置
    • US07644337B2
    • 2010-01-05
    • US11514041
    • 2006-08-31
    • Toshio ItoToshihiko Morita
    • Toshio ItoToshihiko Morita
    • H03M13/29
    • H03M13/1102H03M13/1515H03M13/19H03M13/29H03M13/2918H03M13/2927H03M13/293
    • An encoder divides the data in which sector data is adjacently connected to a first RS parity generated in Reed Solomon encoding into blocks to and subjects each of the blocks to cyclic Hamming encoding so as to generate Hamming parities. Subsequently, the data in which the Hamming parities are aligned in a row is subjected to Reed Solomon encoding so as to generate a second RS parity, and encoded data in which the first RS parity and the second RS parity are adjacently connected to the sector data is output. A decoder s divides the sector data and the first RS parity into n blockes and cyclic Hamming encoding, aligns the parities thereof, corrects errors in the parities by Reed Solomon decoding by the second RS parity, then corrects 1-bit errors in blockes by cyclic Hamming decoding, and further corrects errors of 2 or more bits by Reed Solomon decoding by the first RS parity.
    • 编码器将哪个扇区数据相邻地连接到在Reed Solomon编码中产生的第一RS奇偶校验的数据分成块,并将每个块的每一个块进行循环汉明编码,以便产生汉明奇偶校验。 随后,将汉明奇偶校验排成行的数据进行Reed Solomon编码,以产生第二RS奇偶校验,并且将第一RS奇偶校验和第二RS奇偶校验相邻连接到扇区数据的编码数据 被输出。 解码器将扇区数据和第一RS奇偶校验分为n个块和循环汉明编码,对齐其奇偶校验,通过Reed Solomon解码校正奇偶校验中的错误,通过第二RS奇偶校验,然后通过循环来纠正块中的1位错误 汉明解码,并通过第一RS奇偶校验由Reed Solomon解码进一步校正2位或更多位的错误。