REGISTER now for FREE 
|
FREE patent keyword monitoring and additional FREE benefits. REGISTER now for FREE
|
|
|
Pulse Or Digital Communications > Bandwidth Reduction Or Expansion > Television Or Motion Video Signal > Predictive > Motion Vector > Half-pixel Refinement Half-pixel RefinementHalf-pixel Refinement patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.09/20/07 - 20070217516 - Uni-modal based fast half-pel and fast quarter-pel refinement for video encoding A method of half-pixel interpolation and quarter-pixel interpolation are adapted for reducing the impact of aliasing within motion estimation. To estimate a motion vector with quarter-pixel accuracy more efficiently, the improved method is able to skip checking certain points using the uni-modal assumption. In an embodiment, a diamond based refinement ... 09/20/07 - 20070217515 - Method for determining a search pattern for motion estimation A method for determining a search pattern for use in fractional motion estimation for video compression includes selecting a search center within a current macroblock; selecting a plurality of search points forming a half-pel search pattern surrounding the search center, and further selecting another search point at the search center; ... 06/14/07 - 20070133687 - Motion compensation method A motion compensation method for achieving the reduction of operation workload and the simplification of a hardware configuration includes: interpolation having (i) a first calculation step (S100) of calculating base values of sub-pixel values by multiplying coefficients with pixel values of pixels included in a reference picture and (ii) a ... 04/26/07 - 20070092010 - Apparatus and method for motion estimation supporting multiple video compression standards An apparatus for motion estimation which supports multiple video compression standards and the method thereof is provided. The apparatus uses an interpolation filter with fixed coefficients. The apparatus also adjusts block sizes and calculation details of cost functions according to various video compression standards. Therefore the apparatus is capable of ... 01/25/07 - 20070019738 - Method and apparatus for cost calculation in decimal motion estimation A method and an apparatus for cost calculation in decimal motion estimation are provided. The method comprises the following steps. Firstly, perform interpolation on a current block to get an interpolation result of a position corresponding to a decimal motion vector. Secondly, calculate a cost according to data at integer ... 01/11/07 - 20070009040 - Moving picture coding apparatus While accuracy of motion compensated prediction is kept high, reduction in processing amount is made possible. When motion compensated prediction is performed on inputted image data by a motion vector detection section, first, reference is made to past three reference frames stored in a reference image storage section, integer search ... 01/04/07 - 20070002952 - Video coding method and apparatus for calculating motion vectors of the vertices of a patch of an image and transmitting information of horizontal and vertical components of the motion vectors A method and apparatus for coding an image includes calculation of motion vectors of vertices of a patch in an image being encoded and transmitting information of horizontal and vertical components of the motion vectors of the vertices and information specifying that values of the horizontal and vertical components of ... 01/04/07 - 20070002951 - Systems and methods for improved motion estimation System or methods may include loading information associated with a window of pixels from memory into a matrix of processing elements, the window of pixels being selected from a plurality of pixels associated with a reference frame, determining a current frame comprising a plurality of pixels, determining a first block ... 12/28/06 - 20060291563 - Interpolation apparatus and method for motion vector compensation An interpolation method and apparatus for motion vector compensation are provided. The interpolation method includes calculating a horizontal sum of values of a plurality of half-pixels adjacent to or near a predetermined quarter-pixel in the horizontal direction by giving predetermined weights to each of the half-pixels, and adding the results; ... 12/21/06 - 20060285597 - Reusing interpolated values in advanced video encoders The fact that fractional-pixel points that are searched are close to each other, and hence the half-pixel and quarter-pixel interpolation of each point involves computing interpolations that have already been computed, may be exploited. This is accomplished by storing the interpolated values of the first point and reusing them when ... 09/07/06 - 20060198445 - Prediction-based directional fractional pixel motion estimation for video coding Motion-compensated video coding that employs prediction-based directional fractional pixel motion estimation is described. The fractional pixel motion estimation uses prediction-based searching and directional searching to search for candidate sub-pixel motion vectors oriented in a certain direction. With prediction-based searching, sub-pixel motion vectors are predicted using two techniques—median prediction and up-layer ... 08/24/06 - 20060188022 - Motion estimation apparatus and method A motion estimation apparatus and method is disclosed. The apparatus includes a block error calculator to calculate a specified block error based on a candidate motion vector previously estimated and spatiotemporarily neighboring on a present block; a motion estimation mode decider to decide a motion estimation mode for the present ... 08/03/06 - 20060171464 - Method and apparatus for motion estimation A method and apparatus for motion estimation in which the amount of computation can be reduced are provided. The method for motion estimation includes storing an interblock match difference calculated for a previous matching block to be motion estimated, calculating an interblock match difference for a current matching block to ... 07/20/06 - 20060159180 - Video encoder, video decoder, video encoding method, video decoding method, and video encoding and decoding system A method and a video decoder for decoding an encoded bitstream of video data in a picture encoding and decoding system are disclosed. The video decoder includes a motion compensation unit for calculating a position for a sample image portion using an encoded bitstream of video data having a motion ... 07/06/06 - 20060146935 - Method and apparatus for sub-pixel motion compensation A method of motion compensation for an input block is disclosed. The method generally includes the steps of (A) generating a plurality of tap values in response to a motion vector for the input block, (B) generating an interpolated block by programmable filtering a reference block using the tap values, ... 06/22/06 - 20060133508 - Video encoder, video decoder, video encoding method, video decoding method, and video encoding and decoding system A method and a video decoder for decoding an encoded bitstream of video data in a picture encoding and decoding system are disclosed. The video decoder includes a motion compensation unit for calculating a position for a sample image portion using an encoded bitstream of video data having a motion ... 06/22/06 - 20060133507 - Picture information decoding method and picture information encoding method A picture information decoding method enables to switch a pixel precisions of a motion vector while compatibility with conventional standard is maintained and a delay occurred in parsing a picture parameter set is prevented, and it is judged whether or not a half_pixel_mv_flag indicating the pixel precision of the motion ... 06/22/06 - 20060133506 - Method and system for fast implementation of subpixel interpolation A subpixel interpolator includes an input memory capable of storing video information formed from full pixels. The subpixel interpolator also includes at least one interpolation unit capable of performing subpixel interpolation to generate half-pixels and quarter-pixels in parallel. Multiple half-pixels and multiple quarter-pixels are generated concurrently during the subpixel interpolation. ... 06/08/06 - 20060120459 - Method for coding vector refinement information required to use motion vectors in base layer pictures when encoding video signal and method for decoding video data using such coded vector refinement information A method for coding vector refinement information required to use motion vectors in base layer pictures when encoding a video signal and a method for decoding video data using the coded vector refinement information are provided. A value for vector refinement information of an image block present in a frame ... 05/25/06 - 20060109910 - System and method for sub-pixel interpolation in motion vector estimation The present invention provides an efficient sub-pixel interpolation technique for motion vector estimation during video coding. In one embodiment, this is accomplished by interpolating adjacent pixels at fractional horizontal, vertical, and diagonal locations in a macroblock of (M×N) pixels, such that there are no overlapping interpolations, to generate values for ... 05/25/06 - 20060109909 - Decision mechanism for partition types of macro block A decision mechanism for partition types of a macro block is provided. First, a rough motion estimation is performed on a macro block, so as to obtain a rough related information corresponding to various partition types. Then, one of the partition types is determined based on the rough related information. ... 04/27/06 - 20060088104 - Non-integer pixel sharing for video encoding This disclosure describes video encoding techniques and video encoding devices that implement such techniques. In one embodiment, this disclosure describes a video encoding device comprising a motion estimator that generates non-integer pixel values for motion estimation, the motion estimator including a filter that receives at least three inputs of integer ... 12/15/05 - 20050276331 - Method and apparatus for estimating motion An ME method and an apparatus thereof for use in an image codec. The ME method includes: selecting at least one prediction mode whose integer pixel motion estimation (IPME) result cost is relatively low among a plurality of prediction modes based on IPME results for each of the plurality of ... 12/15/05 - 20050276330 - Method and apparatus for sub-pixel motion estimation which reduces bit precision A method and apparatus are provided for sub-pixel motion estimation which performs sub-pixel motion estimation in which the precision of a difference between a pixel value of a block to be searched and a pixel value of a block of a search area, i.e., the number of bits of the ... 12/01/05 - 20050265458 - Image interpolation apparatus and methods that apply quarter pel interpolation to selected half pel interpolation results An image interpolation apparatus includes a half pel interpolation unit that is configured to perform half pel interpolation on input data to provide half pel interpolation results. A data selection unit is configured to select a portion of the half pel interpolation results to provide a selected portion of the ... 10/20/05 - 20050232361 - Video coding method and apparatus for calculating motion vectors of the vertices of a patch of an image and transmitting information of horizontal and vertical components of the motion vectors A method and apparatus for coding an image includes calculation of motion vectors of vertices of a patch in an image being encoded and transmitting information of horizontal and vertical components of the motion vectors of the vertices and information specifying that values of the horizontal and vertical components of ... 10/20/05 - 20050232360 - Motion estimation apparatus and method with optimal computational complexity Disclosed are a motion estimation (ME) apparatus and method using a fast search algorithm for a motion vector (MV) that can significantly reduce the number of computations by making use of the fast search algorithm rather than a conventional full search algorithm and that can allow a user to set ... 09/29/05 - 20050213664 - Transcoding of video signals A method of transcoding from H.263 coded video frames to H.261 coded video frames, the method comprising for each INTER coded macro block (MB) of each frame, determining whether a component of the motion vector (MV) of the MB has a half pixel value, if yes, carrying out a MV ... 06/23/05 - 20050135488 - Apparatus and method for performing sub-pixel vector estimations using quadratic approximations To achieve the foregoing, and in accordance with the purpose of the present invention, an apparatus and method for generating refined sub-pixel vectors for motion estimation from vector correlation values and converged vector correlation values using quadratic approximations respectively is disclosed. The apparatus and method includes defining a minimum vector ... ### FreshPatents.com Support |