1
Marta Karczewicz, Justin Ridge: Context-based adaptive variable length coding for adaptive block transforms. Nokia Corporation, Ware Fressola Van Der Sluys & Adolphson, September 21, 2004: US06795584 (170 worldwide citation)

A method and system for coding an image using context-based adaptive VLC where transform coefficients are partitioned into blocks having a block dimension of 4nĂ—4m (with n, m being positive integer equal to or greater than 1). Each block is scanned in a zigzag manner to produce an ordered vector of ...


2
Justin Ridge: Method and apparatus for providing a multimedia data stream. Nokia Corporation, Ware Fressola Van Der Sluys & Adolphson, May 17, 2005: US06895410 (40 worldwide citation)

A method and corresponding equipment (11) for encoding different types of objects of a multimedia data stream so as to provide improved overall quality (Q), according to relationships (11b) between quality (Qi) and encoding size/transmission rate (Ri) for each object, and according to penalties (11c ...


3
Justin Ridge: Size reduction method and device for compressed images. Nokia Corporation, Ware Fressola Van Der Sluys & Adolphson, August 16, 2005: US06931159 (16 worldwide citation)

A method and device for reducing a compressed image to a target size by reducing the quality of the image by a quality scaling factor. Image statistics inherent to the image are used to compute the size reduction as a function of the quality scaling factor. Using the relationship between the quality ...


4
Yiliang Bao, Marta Karczewicz, Justin Ridge: Method and system for entropy decoding for scalable video bit stream. Nokia Corporation, Foley & Lardner, February 16, 2010: US07664176 (14 worldwide citation)

A method, program product and apparatus for decoding from a scalable bit stream the binarization results of a video sequence by selectively decoding syntax elements and avoiding redundancy in coding. The result is a decrease in the size of the compressed bit stream of an enhancement layer bit stream ...


5
Xianglin Wang, Justin Ridge: Scalable video coding. Nokia Corporation, Alston & Bird, April 16, 2013: US08422555 (7 worldwide citation)

A system and method for predicting an enhancement layer macroblock. A base layer frame is divided into intra-coded and inter-coded regions. If any portion of the enhancement layer macroblock is covered by both an intra-coded base layer macroblock and an inter-coded base layer macroblock, predictions ...


6
Justin Ridge, Xianglin Wang: Scalable video coding and decoding. Nokia Corporation, Foley & Lardner, September 8, 2009: US07586425 (5 worldwide citation)

A method for coding spatial and quality enhancement information in scalable video coding using variable length codes. Conventional systems have been capable of using variable length codes only with nonscalable video coding, In the present invention, the coded block pattern for each block of informat ...


7
Justin Ridge: Method and apparatus for selecting a format in which to re-encode a quantized image. Nokia Corporation, Ware Fressola Van Der Sluys & Adolphson, September 12, 2006: US07106908 (5 worldwide citation)

An apparatus and corresponding method (10) for reencoding an input image already encoded in some format in order to provide a possibly more suitable encoding, based on whether the input image is determined by the system to be a graphic image (i.e. an artificial image) or a natural image (i.e. for ex ...


8
Justin Ridge, Ye Kui Wang, Yiliang Bao, Marta Karczewicz, Xianglin Wang: FGS identification in scalable video coding. Nokia Corporation, Foley & Lardner, July 13, 2010: US07756206 (4 worldwide citation)

A system and method for providing improved FGS identification in scalable video coding. According to the present invention, each FGS enhancement layer is assigned a unique dependency identifier and contains only FGS enhancement information. For subsequent enhancement layers, the base dependency iden ...


9
Justin Ridge: Method and device for reducing image by palette modification. Nokia Corporation, Ware Fressola Van der Sluys & Adolphson, August 30, 2005: US06937759 (3 worldwide citation)

A method and device for reducing an input image by modifying the palette used in image compression. The reduction process involves mapping one or more colors of the original palette to a single color in a new palette. The image size of the reduced image is estimated from the entropy of the input ima ...


10
Justin Ridge, Yiliang Bao, Marta Karczewicz, Xianglin Wang: Method and system for coding/decoding of a video bit stream for fine granularity scalability. Nokia Corporation, Foley and Lardner, February 26, 2008: US07336837 (3 worldwide citation)

Methods, computer code products and devices for encoding and/or decoding video data in multiple passes, the video data having a multiple components each component including multiple coefficients. The method can starting the next pass of the encoding or decoding process immediately after the end of t ...