Abstract:
PURPOSE: A device for synchronizing an image by adding synchronization information to a sub data space of a video signal and a method thereof are provided to synchronize images corresponding to the video signal by adding the synchronization information to the sub data space. CONSTITUTION: A synchronization information adding device(100) includes a synchronization information generating unit(210) and a synchronization information adding unit(220). The synchronization information generating unit generates synchronization information including a time code based on play time of a video frame or reception time of a video signal. The synchronization information adding unit adds the synchronization information to a sub data space of the video signal. [Reference numerals] (100) Synchronization information adding device; (210) Synchronization information generating unit; (220) Synchronization information adding unit;
Abstract:
PURPOSE: An adaptive image encoding device and a method thereof are provided to improve the performance of image compression by adaptively selecting an encoding parameter. CONSTITUTION: An adaptive image encoding device determines a reference block for encoding a current block(S110). The adaptive image encoding device determines an encoding parameter of the reference block(S120). The adaptive image encoding device determines a characteristic of the reference block(S130). The adaptive image encoding device adaptively encodes the current block by using the encoding parameter(S140). [Reference numerals] (AA) Start; (BB) End; (S110) Determining a reference block; (S120) Determining a encoding parameter of the reference block; (S130) Determining a feature of the reference block; (S140) Encoding an encoding target block
Abstract:
PURPOSE: An entropy encoding/decoding method is provided to increase the compression efficiency of an image and to efficiency of entropy encoding. CONSTITUTION: An encoding unit scans a coefficient of a residual signal in a low frequency component order. The entropy encoding unit arranges the scanned coefficient(S510). The entropy encoding unit performs Last_coeff encoding of the aligned coefficients(S520). The entropy encoding unit performs explicit run/level mode encoding(S550). The encoding unit performs implicit level mode encoding(S560). [Reference numerals] (AA) Yes; (BB) No; (S510) Scanning; (S520) Encoding Last_coeff; (S530) Determining the number of explicit; (S540) The number of encoding
Abstract:
PURPOSE: A method for storing a temporal motion vector and a device thereof are provided to prevent an increase of the size of a memory access bandwidth when data are stored or brought in or from a corresponding memory. CONSTITUTION: A restored image is filtered in a loop. The resolution of a motion vector is reduced. The dynamic range of the motion vector is restricted. An image and a motion vector are stored in an image buffer or a motion vector buffer. The resolution and the dynamic range of the motion vector are restricted and controlled.
Abstract:
PURPOSE: An adaptive sorting table for entropy coding is provided to reduce complexity due to frequent table updating. CONSTITUTION: Whether a sorting table is updated or not is determined by using the information including symbol value and code number of peripheral blocks. A table index with a high incidence is mapped in a small code number. The sorting table is updated. The updated table is used for the next symbol value.
Abstract:
PURPOSE: An intra prediction mode encoding/decoding method and an apparatus thereof are provided to increase image encoding/decoding efficiency. CONSTITUTION: A decoding unit extracts prediction mode information(S1310). The decoding unit extracts an intra prediction mode about a decoding unit by using the extracted prediction mode information. The decoding unit performs intra prediction about the decoding unit based on the extracted intra prediction mode(S1320). The decoding unit extracts an MPM candidate about the decoding unit.
Abstract:
PURPOSE: A parallel entropy decoding and encoding method and apparatus thereof are provided to improve image encoding efficiency through an entropy encoding method. CONSTITUTION: A decoder deducts update information for a probability section and representative probability(S1410). The decoder updates the representative probability corresponding to each probability section by using the deducted update information(S1420). The decoder changes codeword into bin through the representative probability information including the updated probability section information(S1430).
Abstract:
PURPOSE: An image encoding/decoding method and an image encoding/decoding device thereof are provided to encode or decode the division information of a target encoding/decoding block by using the information of a neighbor block. CONSTITUTION: An image encoding device acquires division information from neighbor blocks to a target encoding block(S110). The image encoding device predicts the division of the target encoding block(S120). The image encoding device encodes the information of the difference between the actual division information and the prediction division information of the target encoding block(S150). The image encoding device transmits the encoded information(S160).