公开(公告)号：EP1566957B1

公开(公告)日：2007-09-26

申请号：EP04425101.5

申请日：2004-02-18

Applicant: STMicroelectronics S.r.l. ,  STMicroelectronics Limited

Inventor： Gardella, Pier Luigi ,  Barone, Massimiliano ,  Sweet, Gary ,  Pau, Danilo ,  Hill, Stephen ,  Goda, Simon

IPC: H04N1/41 ,  H04N1/64 ,  G06T3/40 ,  H04N7/26 ,  G09G5/02

CPC classification number: H04N19/00 ,  G09G3/2051 ,  G09G5/02 ,  H04N1/40087 ,  H04N19/42 ,  H04N19/90

公开(公告)号：EP1566957A1

公开(公告)日：2005-08-24

申请号：EP04425101.5

申请日：2004-02-18

Applicant: STMicroelectronics S.r.l. ,  STMicroelectronics Limited

Inventor： Gardella, Pier Luigi ,  Barone, Massimiliano ,  Sweet, Gary ,  Pau, Danilo ,  Hill, Stephen ,  Goda, Simon

IPC: H04N1/41 ,  H04N1/64 ,  G06T3/40 ,  H04N7/26 ,  G09G5/02

CPC classification number: H04N19/00 ,  G09G3/2051 ,  G09G5/02 ,  H04N1/40087 ,  H04N19/42 ,  H04N19/90

Abstract: A dither matrix is applied to a high-resolution image to compare the value of each of the pixels that compose it with a threshold value of the matrix and to obtain an output value of the matrix (Dither matrix value) from each comparison. To each pixel value (in_value_r) of the image there is applied the algorithm represented by the schematic layout of Figure 7 to obtain the pixel values (Out_r) of a low-resolution image. C 1 -C 5 and n 1 -n 10 are parameters that may be selected by means of predetermined criteria based on comparisons of the low-resolution image, obtained by means of the operations described above, with an equivalent low-resolution image obtained by means of a sample method.

Abstract translation: 将抖动矩阵应用于高分辨率图像，以将构成它的每个像素的值与矩阵的阈值进行比较，并从每个比较中获得矩阵（抖动矩阵值）的输出值。 对于图像的每个像素值（in_value_r），应用由图7的原理图布局表示的算法，以获得低分辨率图像的像素值（Out_r）。 C1-C5和n1-n10是可以通过基于通过上述操作获得的低分辨率图像与通过样本获得的等效低分辨率图像的比较的预定标准来选择的参数 方法。