Disclosed are a method and a apparatus for encoding a video, and a method and apparatus for decoding a video, in which neighboring pixels used to perform intra prediction on a current block to be encoded are filtered and intra prediction is performed by using the filtered neighboring pixels.

Method and apparatus for encoding video, and method and apparatus for decoding video

Disclosed is a digital broadcasting transmission/reception system having an improved reception performance and in a signal-processing method thereof. A digital broadcasting transmitter comprises a TS stream generator for inputting robust and normal packets having stuff bytes in predetermined positions and generating dual TS stream by inserting the robust packets between the normal packets; a randomizer for randomizing the dual TS stream; a stuff byte exchanger for replacing the stuff bytes of a randomized data streams from the randomizer to a predetermined known data; and an encoder for encoding a data streams to which the known data is inserted. Accordingly, the present invention detects the known data from a signal received from a reception side and uses the detected known data for synchronization and equalization, so that the digital broadcasting reception performance can be improved at poor multipath channels.

Digital broadcasting transmission/reception devices capable of improving a receiving performance and signal processing method thereof

There are provided video encoders and corresponding methods for performing fast mode decision of B-frames. A video encoder for encoding video data for a B slice that is divisible into macroblocks includes an encoder ( OO) for performing mode selection when encoding a current macroblock in the B slice by counting a number of neighboring macroblocks in the B slice coded in a DIRECT mode, and only checking one of the DIRECT MODE or a 16x16 mode for the current macroblock when the number of neighboring macroblocks coded in the DIRECT mode exceeds a predetermined threshold.

Method and apparatus for fast mode decision of b-frames in a video encoder

A more efficient motion estimation process that utilizes a plurality of predicted start points (e.g., two predicted start points) based on blocks adjacent to the current block together with other improvements and requires minimal system resources (e.g., hardware resources and CPU processing) in its hardware implementation is provided. More particularly, the motion estimation technique in accordance with the present invention performs a plurality of coarse searches (either sequentially or in parallel) using a plurality of predicted start positions followed by a fine search.

Mpeg motion estimation based on dual start points

In a system and method for coding moving pictures, the cost of skip mode is estimated to determine the best coding mode. Skip mode selection within the framework of the AVC standard is improved by complexity based threshold determination, penalty modulation level adjustment and bias modulation level adjustment for the encoding mode selection.

Complexity adaptive skip mode estimation for video encoding

To perform an adequate encoding process while cutting a data transfer amount in an encoding process of moving images. A moving image processing apparatus 1 has a motion detection/motion compensation processing portions 80 as a coprocessor for performing a motion detection process as a process of a large calculation amount added to a processor 10 for managing an entire encoding or decoding process of a moving image, and has a buffer addressed to a plurality of memory banks by interleaving. A procedure for reading image data on the motion detection process is a predetermined method, and a section capable of adequately handling a case of reducing read image data is provided. As for the moving image processing apparatus according to the present invention, it is possible, with such a configuration, to perform an adequate encoding process while reducing a data transfer amount in the encoding process of the moving image.

Moving image encoding apparatus and moving image processing apparatus

An inter mode for encoding a video macroblock is selected. An initial analysis on the macroblock homogeneity is performed to quickly reduce the number of inter modes for which motion estimation and rate distortion calculation are to be performed. An inter mode is selected based on these calculations and sub-pixel motion estimation, at various sub-pixel interpolation granularities, is performed only on the selected inter mode. Sub-pixel motion estimation may be skipped for macroblocks that exhibit relatively low distortion at the integer pixel level.

Macroblock homogeneity analysis and inter mode prediction

A state detecting device includes an acquisition unit which acquires an x-axis component, a y-axis component and a z-axis component of an acceleration signal from an acceleration sensor, and an arithmetic unit which performs arithmetic processing. The arithmetic unit calculates a coordinate transformation matrix for finding an acceleration component in horizontal direction, from an average value of the x-axis component, an average value of the y-axis component and an average value of the z-axis component acquired by the acquisition unit, and discriminates between a first state where a person is in a first type of vehicle and a second state where the person is in a second type of vehicle that is different from the first type, based on the coordinate transformation matrix that is calculated and a first indicator value obtained from the x-axis component, the y-axis component and the z-axis component.

State detecting device, electronic apparatus, program and state detecting method

A swing diagnosis apparatus includes a level calculation section that calculates a level on the basis of a relationship between a rotation angle about a rotation axis of an exercise appliance at a predetermined timing between the time of starting a backswing and the time of impact with a longitudinal direction of the exercise appliance as the rotation axis, and an inclination of a ball hitting portion of the exercise appliance at impact.

Swing diagnosis apparatus, swing diagnosis system, swing diagnosis method, and recording medium

A swing diagnosis method includes a procedure of performing diagnosis of a plurality of items including a first item regarding at least one of a backswing and a downswing, and a second item regarding impact on the basis of data regarding a swing, and a procedure of outputting diagnosis information on the basis of the plurality of items.

Norihisa Hagiwara

Papers

Moving image encoding apparatus and moving image processing apparatus

Macroblock homogeneity analysis and inter mode prediction

State detecting device, electronic apparatus, program and state detecting method

Swing diagnosis apparatus, swing diagnosis system, swing diagnosis method, and recording medium

Swing diagnosis method, recording medium, swing diagnosis apparatus, and swing diagnosis system