公开(公告)号：EP2785040A1

公开(公告)日：2014-10-01

申请号：EP14153842.1

申请日：2014-02-04

申请人： Dainippon Screen Mfg. Co., Ltd.

发明人： Takahama, Ikuhiko ,  Asai, Hiroshi ,  Ichioka, Yoshikazu

IPC分类号： H04N1/405

CPC分类号： G06K15/1881 ,  G06K15/102 ,  H04N1/4051

摘要： An image obtained by shrinking an original image in a row direction is halftoned, and this halftone dot image is enlarged in the row direction and recorded at double speed. In order to determine a threshold value of a threshold matrix used for halftoning an image, prepared is a matrix space in accordance with writing positions used for actual recording of an image. In the matrix space, writing elements are set alternately with non-writing elements both in the row direction and in a column direction. In the matrix space, turn-on numbers are allocated to all the writing elements in avoidance of the non-writing elements. Then, in accordance with the turn-on numbers, respective threshold values for the writing elements are determined. By shrinking the threshold matrix in the row direction with omission of the non-writing elements, a threshold matrix for double speed is obtained.

摘要翻译： 通过按照行的方向收缩到原始图像而获得的图像被半色调，并且该半色调点的图像被放大的行方向和以两倍速记录。 为了确定矿用于半色调图像的阈值矩阵的阈值，制备是在舞蹈雅的矩阵空间与用于图像的实际记录描画位置。 在基体中的空间，写入元件与两个在行方向和列方向非写入元件交替设定。 在矩阵空间，出现编号分配给在回避非描画要素的所有文字元素。 然后，在与出现编号雅舞蹈，为书写元件respectivement的阈值是确定的开采。 通过在与非写入元件的遗漏的行方向上的阈值矩阵缩小，以双倍的速度的阈值矩阵被获得。

公开(公告)号：EP2645696A3

公开(公告)日：2014-11-26

申请号：EP13153071.9

申请日：2013-01-29

申请人： Dainippon Screen Mfg. Co., Ltd.

发明人： Takahama, Ikuhiko ,  Asai, Hiroshi

IPC分类号： H04N1/405 ,  H04N1/52

CPC分类号： B41J2/2121 ,  H04N1/4051 ,  H04N1/52

摘要： A threshold matrix generation part determines a turn-on order in a matrix area where a threshold matrix is generated and determines a threshold value of each matrix element. In determining the turn-on order, a temporary evaluation value element is obtained based on a distance between each undetermined matrix element whose position in the turn-on order has not been determined and each determined matrix element. If these matrix elements are located in the same position with respect to a row or column direction, the temporary evaluation value element is corrected such that the undetermined matrix element is less evaluated based on the evaluation value. Then, the position of an undetermined matrix element that is most highly evaluated in the turn-on order is determined. Accordingly, a threshold matrix that suppresses the occurrence of a grid-like dot pattern can be provided.

公开(公告)号：EP2645696A2

公开(公告)日：2013-10-02

申请号：EP13153071.9

申请日：2013-01-29

申请人： Dainippon Screen Mfg. Co., Ltd.

发明人： Takahama, Ikuhiko ,  Asai, Hiroshi

IPC分类号： H04N1/405 ,  H04N1/52

CPC分类号： B41J2/2121 ,  H04N1/4051 ,  H04N1/52

摘要： A threshold matrix generation part determines a turn-on order in a matrix area where a threshold matrix is generated and determines a threshold value of each matrix element. In determining the turn-on order, a temporary evaluation value element is obtained based on a distance between each undetermined matrix element whose position in the turn-on order has not been determined and each determined matrix element. If these matrix elements are located in the same position with respect to a row or column direction, the temporary evaluation value element is corrected such that the undetermined matrix element is less evaluated based on the evaluation value. Then, the position of an undetermined matrix element that is most highly evaluated in the turn-on order is determined. Accordingly, a threshold matrix that suppresses the occurrence of a grid-like dot pattern can be provided.

摘要翻译： 阈值矩阵生成部确定生成阈值矩阵的矩阵区域中的点亮顺序，并且确定每个矩阵元素的阈值。 在确定点亮顺序时，基于未确定点亮顺序中的位置的每个未确定矩阵元素与每个确定的矩阵元素之间的距离获得临时评估值元素。 如果这些矩阵元素相对于行或列方向位于相同的位置，则校正临时评估值元素，使得基于评估值对未确定的矩阵元素进行较少的评估。 然后，确定在点亮顺序中最高评价的未确定矩阵元素的位置。 因此，可以提供抑制网格状点阵图案的发生的阈值矩阵。