1
Ming Chieh Lee, Wei ge Chen: Image compression and affine transformation for image motion compensation. Microsoft Corporation, Klarquist Sparkman Campbell Leigh & Whinston, October 19, 1999: US05970173 (236 worldwide citation)

A transformation method provides a multi-dimensional affine transformation for representing motion between corresponding image components of successive video image frames. The multi-dimensional affine transformations can represent complex motion that includes any or all of translation, rotation, mag ...


2
Ming Chieh Lee, Wei ge Chen: Transparent block skipping in object-based video coding systems. Microsoft Corporation, Klarquist Sparkman Campbell Leigh & Whinston, May 5, 1998: US05748789 (192 worldwide citation)

A method implemented in an object-based video encoder or decoder uses shape information that describes the boundary of a group of pixels representing an object in a sequence of video frames to identify transparent blocks (e.g., macroblocks or blocks so that coding/decoding of these blocks can be ski ...


3
Ming Chieh Lee, Wei ge Chen: Video coding using adaptive coding of block parameters for coded/uncoded blocks. Microsoft Corporation, Klarquist Sparkman Campbell Leigh & Whinston, August 31, 1999: US05946043 (170 worldwide citation)

Video coding efficiency for high motion scenes is improved by adaptively disabling a parameter indicating whether texture and motion data is coded for a macroblock. The COD parameter is disabled when the number of macroblocks with substantially all zero motion and texture data is less than a thresho ...


4
Shou jen Joseph Wu, Chih Lung Bruce Lin, Ming Chieh Lee: Motion estimation and block matching pattern. Microsoft Corporation, Klarquist Sparkman, July 9, 2002: US06418166 (146 worldwide citation)

A motion estimation process improves coding efficiency by using a modified search criteria. The modified search criteria takes into account the error signal needed to encode a block of pixels as well as the the motion data when selecting a matching block in a target frame. This approach reduces the ...


5
Chuang Gu, Ming Chieh Lee: Tracking semantic objects in vector image sequences. Microsoft Corporation, Klarquist Sparkman, March 23, 2004: US06711278 (116 worldwide citation)

A semantic object tracking method tracks general semantic objects with multiple non-rigid motion, disconnected components and multiple colors throughout a vector image sequence. The method accurately tracks these general semantic objects by spatially segmenting image regions from a current frame and ...


6
Chih Lung, Ming Chieh Lee: Efficient motion vector coding for video compression. Microsoft Corporation, Klarquist Sparkman, January 3, 2006: US06983018 (108 worldwide citation)

Video coding efficiency is improved by jointly coding the x and y components of motion vectors with a single variable length code. The motion vector components for a block of pixels are predicted based on motion vectors of neighboring blocks of pixels. The predicted x and y components are then joint ...


7
Ming Chieh Lee: Pixel block correlation process. Microsoft Corporation, Klarquist Sparkman Campbell Leigh & Whinston, July 21, 1998: US05784175 (108 worldwide citation)

A method of correlating transformation blocks between video frames for a block matching motion estimation process utilizes redundancy inherent in correlating pixel blocks to significantly reduce the processing resources required to perform the correlation. The method includes defining for the transf ...


8
Ming Chieh Lee, Wei ge Chen: Method and system for unrestricted motion estimation for video. Microsoft Corporation, Klarquist Sparkman Campbell Leigh & Whinston, November 25, 1997: US05692063 (107 worldwide citation)

Motion estimation plays a very important role in a video compression scheme. It is well known that in a video compression scheme, there exists a high temporal correlation between consecutive video image frames. However, it is difficult to do motion estimation for newly exposed objects, since there i ...


9
Ming Chieh Lee, Chuang Gu: Method and system for filtering compressed video images. Microsoft Corporation, Klarquist Sparkman Campbell Leigh and Whinston, July 28, 1998: US05787203 (104 worldwide citation)

A video compression error signal in a video compression scheme is affected by random and high frequency impulse noise. An error signal suppressor containing two filters is applied to the video compression error signal. The first filter reduces or eliminates random noise. The second filter eliminates ...


10
Wei ge Chen, Ming Chieh Lee: Entrophy code mode switching for frequency-domain audio coding. Microsoft Corporation, Klarquist Sparkman, October 9, 2001: US06300888 (104 worldwide citation)

A frequency-domain audio coder selects among different entropy coding modes according to characteristics of an input stream. In particular, the input stream is partitioned into frequency ranges according to some statistical criteria derived from a statistical analysis of typical or actual input to b ...



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