scispace - formally typeset
Patent

Method and system for selecting interpolation filter type in video coding

Reads0
Chats0
TLDR
In this paper, a method and system for coding a video sequence based on motion compensated prediction (642), wherein an interpolation filter (640) is used to generate predicted pixel values for picture blocks in the video sequence.
Abstract
A method and system for coding a video sequence based on motion compensated prediction (642), wherein an interpolation filter (640) is used to generate predicted pixel values for picture blocks in the video sequence. The interpolation filter for use in conjunction with a multi-picture type is shorter or having fewer coefficients than the interpolation filter for use in conjunction with a single-picture type. As such, the complexity of the interpolation filter for the multi-picture type can be reduced. Furthermore, the interpolation filter may be changed based on the characteristics of the block, the size and/or the shape of the block.

read more

Citations
More filters
Patent

Image processing device and method

TL;DR: In this paper, an image processing device and a method that make it possible to suppress block noise is presented, which can be applied to an image processor and can be used to suppress noise in a filter process determination unit.
Patent

An apparatus, a method and a computer program for video coding and decoding

TL;DR: In this article, a method, an apparatus, a server, a client and a non-transitory computer readable medium comprising a computer program stored therein for motion compensated video coding and decoding is disclosed.
Patent

Resampling and picture resizing operations for multi-resolution video coding and decoding

TL;DR: In this article, the authors present techniques and tools for high accuracy position calculation for picture resizing in applications such as spatially-scalable video coding and decoding, which is performed according to a resampling scale factor.
Patent

Image Processing Apparatus and Method

TL;DR: In this paper, an intra-TP motion prediction/compensation unit 75 performs motion prediction within a predetermined search range by taking predicted motion vector information generated by an intrapredicted motion vector generating unit 76 as the center of search, on the basis of an image to be intra-predicted from a screen rearrangement buffer 62 and reference images from a frame memory 72.
Patent

Video encoding method and video decoding method

TL;DR: In this paper, a video coding apparatus consisting of a first orthogonal transformation unit performing discrete cosine transform on an input picture signal, a low pass filter performing low-pass filtering on the input image signal, and a downsampling unit downsampledging the resolution of a low-frequency image signal was presented.
References
More filters
Journal ArticleDOI

Motion compensating field interpolation using a hierarchically structured displacement estimator

M Bierling, +1 more
- 01 Dec 1986 - 
TL;DR: In this paper, a displacement vector with integer components for each picture element of the fields to be interpolated is provided, and a change detector is used to assure zero displacement vectors in unchanged areas.
Patent

Adaptive interpolation filter system for motion compensated predictive video coding

TL;DR: In this article, a plurality of discrete interpolation filters are positioned in a three dimensional grid within the search space, and the candidate filter resulting in the smallest prediction error is identified as the current minimum filter and the search repeated until the prediction error was minimized.
Proceedings ArticleDOI

Adaptive interpolation filter for motion compensated prediction

Thomas Wedi
TL;DR: An adaptive interpolation scheme is presented that uses filter coefficients that are adapted once per image to the non-stationary statistical properties of the video signal to estimate and compensate fractional-pel displacement vector resolution.
Patent

Systolic realization of motion compensated interpolation filter

TL;DR: A motion compensated interpolation filter as mentioned in this paper calculates an interpolated frame between two input frames of video signals having moving objects therein, which is suitable for real-time processing with easy hardware implementation.
Patent

Method and device for decoding time varying image

TL;DR: In this article, the authors proposed a method to reduce the load of arithmetic operation of the interpolation processing to generate a predicted image while suppressing the effect onto a decoded time-varying image thereby reducing the time required for processing.