Abstract:
Disclosed are a method for determining a color difference component quantization parameter and a device using the method. Method for decoding an image can comprise the steps of: decoding a color difference component quantization parameter offset on the basis of size information of a transform unit; and calculating a color difference component quantization parameter index on the basis of the decoded color difference component quantization parameter offset. Therefore, the present invention enables effective quantization by applying different color difference component quantization parameters according to the size of the transform unit when executing the quantization.
Abstract:
Disclosed is an entropy coding method using an index mapping table, and an apparatus using the method. An image-decoding method comprises: a step of mapping an inputted codeword to a code number with reference to an inverse codeword mapping table, and calculating the mapped code number in a table index; and a step of updating the inverse mapping table based on the accumulated number of occurrences of the code number, the number of sequential occurrences of the code number, neighbor block encoding/decoding information, and/or threshold value information for updating the inverse index mapping table. According to the present invention, an index mapping table is realigned based on a certain condition, thereby improving encoding/decoding efficiency.
Abstract:
An inter prediction method according to the present invention comprises: a step for deriving reference motion information related to a unit to be decoded in a current picture; and a step for performing motion compensation for the unit to be decoded, using the reference motion information that has been derived. According to the present invention, image encoding/decoding efficiency can be enhanced.
Abstract:
The present invention relates to a method and apparatus for encoding/decoding image using a motion vector. According to one embodiment of the present invention, an image-decoding method is provided. The image-decoding method comprises the following steps: clipping a motion vector of a reference picture with a predetermined dynamic range so as to generate a clipped motion vector; storing the clipped motion vector in a buffer; deriving a motion vector of a block to be decoded using the motion vector stored in the buffer; and performing inter-prediction decoding using the motion vector of the block to be decoded. According to the present invention, the size of a memory space required to store a motion vector may be reduced.
Abstract:
Provided are a method and an apparatus for transmitting stereoscopic video information capable of providing a stereoscopic video service. The method for transmitting stereoscopic video information comprises the steps of: creating a signaling table including video-related information; and transmitting the signaling table and the video, wherein the signaling table can include stream type information, a stereoscopic program information descriptor and/or a stereoscopic additional video stream descriptor, of the image
Abstract:
Provided are a method and apparatus for determining a video compression standard in a 3DTV service. The method for determining a video compression standard comprises encoding high-quality video, and transmitting the encoded video through channel 1, determining a video compression standard in which the resolution of encoded low-quality video compared to the resolution of encoded high-quality video is the same as or higher than a standard value, and encoding the low-quality video in accordance with the determined video compression standard and transmitting the encoded low-quality video through channel 2. Provided are a method and apparatus for determining a video compression standard in a 3DTV service. The method for determining a video compression standard comprises encoding high-quality video and transmitting the encoded video through channel 1, determining a video compression standard in which the resolution of encoded low-quality video compared to the resolution of encoded high-quality video is the same as or higher than a standard value, and encoding the low-quality video in accordance with the determined video compression standard and transmitting the encoded low-quality video through channel 2.
Abstract:
Disclosed is an integrated voice/audio encoding/decoding apparatus whereby the overlap region of a window is adjusted based on the transition interval. In the present invention, encoding is carried out by making windows of relatively long length overlap in order to increase the efficiency of encoding, while the overlap region of the windows is reduced in accordance with the transition interval when there is a transition interval between frames, thereby making it possible to reduce the occurrence of noise due to transition intervals.
Abstract:
Data about at least two viewpoints constituting stereoscopic video is respectively received with a time difference. A storage unit in an image processing device receives first viewpoint video data, from among the data about the two viewpoints, and uses the first viewpoint video data to generate monoscopic video. Then, after the first viewpoint video data has been stored and second viewpoint video data corresponding to the first viewpoint video data has subsequently been received, stereoscopic video can be generated and displayed by synthesising the first viewpoint video data and the second viewpoint video data.
Abstract:
Disclosed are a method for providing an image for a 3D image, a method for playing an image, and an apparatus for performing the methods. The method for providing the image can transmit a recovery mode for recovering an additional image having a resolution which is lower than that of a reference image having a high resolution.
Abstract:
The present invention relates to a method for encoding image information, to a method for decoding same, and to an apparatus using the methods. The method for decoding the image information according to one embodiment of the present invention comprises the steps of: dividing a prediction area into a first prediction area and a second prediction area according to an intra-prediction mode; performing intra prediction on, and restoration of, the first prediction area; and performing prediction on, and restoration of, the second prediction area. In the step of performing prediction on, and restoration of, the second prediction area, intra-prediction on the second prediction area can be performed with reference to a reference sample for the first prediction area or with reference to a predetermined sample in the restored first prediction area.