Abstract: An example method of encoding or decoding video data includes determining a motion vector for a block of video data using a decoder side motion vector derivation process that includes performing an iterative search process, wherein performing the iterative search process includes: determining a minimum cost through a previous search iteration; updating an overall minimum cost through a current search iteration; and terminating the iterative search process early based on a comparison of the minimum cost through the previous search iteration and the overall minimum cost through the current search iteration; and encoding or decoding the block of video data using the motion vector.

Abstract: A moving picture coding apparatus includes a co-located block information determination unit which determines which one of a forward reference block and a backward reference block will be a co-located block and further determines whether only the unidirectional motion vector of the motion vectors of the co-located block is to be stored in a colPic memory; a temporal motion vector predictor calculation unit which derives a candidate motion vector predictor in temporal motion vector predictor mode using the colPic information stored in the colPic memory; and an inter prediction control unit which determines to code a motion vector using a candidate motion vector predictor having least error from the motion vector derived by motion estimation among candidate motion vector predictors.

Abstract: A reference region determination device is for determining a reference region to be stored in a reference image buffer, and includes: a motion vector acquisition portion configured to acquire a motion vector for each one of already encoded blocks; a position change amount derivation portion configured to derive a position change amount for the reference region based on the acquired motion vectors; and a reference region determination portion configured to determine a position of the reference region to be used in encoding of a next block for encoding after the already encoded blocks based on the position change amount.

Abstract: Methods and systems for improving coding efficiency of video.

Abstract: A method relating generally to image processing is disclosed. In such a method, an image is preprocessed for noise suppression and edge detection with filters. The image is hierarchically decomposed to provide an image pyramid. The hierarchical decomposition includes successively down-scaling the image to provide different resolutions of the image corresponding to levels of the image pyramid. The image and the different resolutions of the image provide a set of images. A scene analysis of the set of images is performed. The performing of the scene analysis includes determining qualifications of blocks of the set of images for feature tracking. A subset of the blocks determined to be qualified for the feature tracking is selected. Motion estimation is performed on the subset of the blocks. The motion estimation is performed using a hierarchical set of motion estimation engines corresponding to levels of the image pyramid.