公开(公告)号：WO03056839A8

公开(公告)日：2004-02-12

申请号：PCT/SG0100261

申请日：2001-12-31

Applicant: ST MICROELECTRONICS ASIA ,  CHIANG PATRICIA WEI YIN ,  HUI LUCAS Y W

Inventor： CHIANG PATRICIA WEI YIN ,  HUI LUCAS Y W

IPC: G06T9/00 ,  H04N7/30 ,  H04N7/50

CPC classification number: H04N19/42 ,  H04N19/122 ,  H04N19/124 ,  H04N19/14 ,  H04N19/149 ,  H04N19/15 ,  H04N19/152 ,  H04N19/176 ,  H04N19/194 ,  H04N19/60 ,  H04N19/61 ,  H04N19/619

Abstract: A method for use in encoding video data, including generating metric values for the video data based on a metric function and respective encoding parameters. At least one of the encoding parameters is selected on the basis of a desired quantity of encoded video data and a predetermined relationship between metric values and respective quantities of encoded video data.

Abstract translation: 一种用于对视频数据进行编码的方法，包括基于度量函数和相应的编码参数产生视频数据的度量值。 基于编码视频数据的期望数量和度量值与编码视频数据的相应数量之间的预定关系来选择编码参数中的至少一个。

公开(公告)号：DE602004007434D1

公开(公告)日：2007-08-23

申请号：DE602004007434

申请日：2004-05-20

Applicant: ST MICROELECTRONICS ASIA

Inventor： HUI LUCAS Y W ,  CHIANG PATRICIA WEI YIN

IPC: H04N5/208 ,  G06T5/00 ,  G06T5/20 ,  H04N5/14 ,  H04N5/21 ,  H04N9/64 ,  H04N9/77

Abstract: A processor for enhancing an input luminance signal including: a means for calculating a chroma edge value associated with the input luminance signal; a means for measuring a luminance gradient associated with the input luminance signal; a peaking filter for processing the input luminance signal; a gain adjustment circuit having a gain function that is adjustable relative to the calculated chroma edge value, the gain adjustment circuit being operable to adjust the magnitude of the output of the peaking filter wherein: in a first range of luminance gradients, the output is an attenuated version of the input; in a second range of luminance gradients the output is directly proportional to the input; in a third range of luminance gradients, the output is inversely proportional to the input; wherein said enhanced luminance signal is the sum of the input and output of the peaking filter.

公开(公告)号：DE602004002618D1

公开(公告)日：2006-11-16

申请号：DE602004002618

申请日：2004-05-13

Applicant: ST MICROELECTRONICS ASIA

Inventor： CHIANG PATRICIA WEI YIN

IPC: G06T5/00

Abstract: An edge enhancement system, including a selective edge controller for determining one or more properties of an edge of image data, and for generating one or more weighting factors on the basis of properties of the edge; and a scaling module for scaling an edge enhancement signal by the weighting factors to control the degree of edge enhancement. The image data may represent a still or moving (i.e., video) image. A max-min search circuit determines maximum and minimum turning points closest to the center of the data processing window and that are located on opposing sides of the window, to determine values and locations of maximum and minimum pixels of the edge. An edge-directed prefiltering circuit reduces the amplification of edge fuzziness by smoothing close the edges vertical prior to enhancement. An aliasing protection circuit reduces the visibility of sawtooth defects on predominantly horizontal diagonal edges.

公开(公告)号：DE602007005422D1

公开(公告)日：2010-05-06

申请号：DE602007005422

申请日：2007-08-06

Applicant: ST MICROELECTRONICS ASIA

Inventor： CHIANG PATRICIA WEI YIN ,  WAI HUI YAU

IPC: G06T5/40 ,  H04N5/202

Abstract: A process for enhancing contrast of an image having pixels in different brightness intensities is disclosed. An image processor for enhancing contrast of an image having pixels is disclosed. A display having a receiver, an image processor according to the preceding, and a screen is also disclosed.

公开(公告)号：DE602004002618T2

公开(公告)日：2007-08-16

申请号：DE602004002618

申请日：2004-05-13

Applicant: ST MICROELECTRONICS ASIA

Inventor： CHIANG PATRICIA WEI YIN

IPC: G06T5/00

Abstract: An edge enhancement system, including a selective edge controller for determining one or more properties of an edge of image data, and for generating one or more weighting factors on the basis of properties of the edge; and a scaling module for scaling an edge enhancement signal by the weighting factors to control the degree of edge enhancement. The image data may represent a still or moving (i.e., video) image. A max-min search circuit determines maximum and minimum turning points closest to the center of the data processing window and that are located on opposing sides of the window, to determine values and locations of maximum and minimum pixels of the edge. An edge-directed prefiltering circuit reduces the amplification of edge fuzziness by smoothing close the edges vertical prior to enhancement. An aliasing protection circuit reduces the visibility of sawtooth defects on predominantly horizontal diagonal edges.