公开(公告)号：SG139602A1

公开(公告)日：2008-02-29

申请号：SG2006054506

申请日：2006-08-08

Applicant: ST MICROELECTRONICS ASIA

Inventor： YIN PATRICIA CHIANG WEI ,  WAI HUI YAU

Abstract: AUTOMATIC CONTRAST ENHANCEMENT 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：SG140441A1

公开(公告)日：2008-03-28

申请号：SG2003012945

申请日：2003-03-17

Applicant: ST MICROELECTRONICS ASIA

Inventor： YIN PATRICIA CHIANG WEI ,  HUI LUCAS Y W ,  BARD JEAN-MICHEL

IPC: G06T9/00 ,  H04N7/26 ,  H04N7/46 ,  H04N7/50

Abstract: DECODER AND METHOD OF DECODING USING PSEUDO TWO PASS DECODING AND ONE PASS ENCODING

公开(公告)号：SG130962A1

公开(公告)日：2007-04-26

申请号：SG2005059969

申请日：2005-09-16

Applicant: ST MICROELECTRONICS ASIA

Inventor： YIN PATRICIA CHIANG WEI ,  WAI HUI YAU

Abstract: A method for adaptive pre-filtering is disclosed, comprising the steps of extracting tuning parameters from video encoding process; processing these tuning parameters to generate control parameters representative of the properties of the video data processed; coupling the control parameters to filter response; generating filter coefficients on selected filter response; and filtering the video data with the filter coefficients before video encoding. The filtering of video data is thus adapted to at least one or more tuning parameters of the video data and the encoding process. The filtering decreases the complexity of encoding by attenuation of high frequency, effectively decreasing the quantization step and reducing compression artifacts.