Abstract:
Provided is a motion picture encoding apparatus comprising: a signal divider for dividing a differential image block into a first domain and a second domain on the basis of a boundary within the differential image block for representing a difference between an original image and a predictive image with respect to the original image; a transform coding unit for transform-coding the first domain using a DCT (Discrete Cosine Transform); a quantization unit for quantizing an output of the transform coding unit in a frequency domain; a spatial domain quantization unit for quantizing the second domain in a spatial domain; and an entropy encoding unit for performing an entropy encoding using outputs of the quantization unit and the spatial domain quantization unit.
Abstract:
The present invention relates to an encoding method and decoding method, and a device using the same. The encoding method according to the present invention comprises the steps of: specifying an intra prediction mode for a current block; and scanning a residual signal by intra prediction of the current block, wherein the step of scanning the residual signal can determine a scanning type for a luminance signal and a chroma signal of the current block according to an intra prediction mode for a luminance sample of the current block.
Abstract:
Provided are intelligent water ring scan apparatus and method thereof, image encoding/decoding apparatus using the water ring scanning and method thereof, and a computer-readable recording medium for recording a program that implements the methods. The apparatus or method of this research selectively improves the image quality of a particular image part that needs to be encoded with priority by transmitting the image data of the particular image part suitably for a human visual system so as to provide a visually improved image. The encoding apparatus of this research differentiates the amount of image data depending on the significance of a certain image part to process the image in various qualities suitably for the human visual system. The methods of this research can be applied to an image encoding/decoding process.
Abstract:
An apparatus for decoding a video signal, comprising: a prediction mode determination unit configured to determine an intra prediction mode of a current block when a prediction mode of the current block 5 corresponds to an intra prediction; a scanning unit configured to perform a scan for the current block; and an inverse-transform unit configured to perform an inverse-transform for residual signal of the current block using at least one of discrete cosine transform (DCT) or discrete sine transform (DST), 10 wherein the scanning unit is further configured to determine, based on the intra prediction mode of the luma component, a scanning type of the luma component and a chroma component of the current block, and wherein when a size of the current block is 4x4, the inverse transform for the luma component of the current block is performed using only the DST.
Abstract:
An apparatus for decoding a video signal, comprising: an entropy decoding unit configured to decode information indicating whether 5 a prediction mode of a current block corresponds to an intra prediction or an inter prediction; a prediction mode determination unit configured to determine an intra prediction mode of the current block when the prediction mode of the current block corresponds to the intra prediction; 10 a scanning unit configured to perform a scan for the current block; and an inverse-transform unit configured to perform an inverse-transform for residual signal of the current block using at least one of discrete cosine transform (DCT) or discrete sine transform (DST), wherein the scanning unit is further configured to determine, based on the intra 15 prediction mode of the luma component, a scanning type of the luma component and a chroma component of the current block, and wherein when a size of the current block is 4x4, the inverse transform for the luma component of the current block is performed using only the DST.
Abstract:
The present invention relates to a method and apparatus for setting a reference picture index of a temporal merging candidate. An inter-picture prediction method using a temporal merging candidate can include the steps of: determining a reference picture index for a current block; and inducing a temporal merging candidate block of the current block and calculating a temporal merging candidate from the temporal merging candidate block, wherein the reference picture index of the temporal merging candidate can be calculated regardless of whether a block other than the current block is decoded. Accordingly, a video processing speed can be increased and video processing complexity can be reduced.
Abstract:
According to one embodiment of the present invention, a video information encoding method comprises: a step of predicting information of the current coding unit to generate prediction information; and a step of determining whether the information of the current coding unit coincides with the prediction information. If the information of the current coding unit coincides with the prediction information, a flag indicating that the information of the current coding unit coincides with the prediction information is encoded and transmitted. If the information of the current coding unit does not coincide with the prediction information, a flag indicating that the information of the current coding unit does not coincide with the prediction information is encoded and transmitted and the information of the current coding unit is encoded and transmitted. In the step of generating prediction information, the prediction information may be generated using the information on the coding unit adjacent to the current coding unit.
Abstract:
Provided are a method and apparatus for transmitting stereoscopic video information based on digital broadcasting. The method for transmitting stereoscopic video information according to the present invention comprises: constructing a signaling table including stream-type information; and transmitting the video information including the signaling table information and video data information. According to the present invention, various types of stereoscopic video services may be provided.
Abstract:
The present invention relates to an encoding method decoding method, and a device using the same. The encoding method according to the present invention comprises the steps of: specifying an intra prediction mode for a current block; and scanning a residual signal by intra prediction of the current block, wherein the step of scanning the residual signal can determine a scanning type for a luminance signal and a chroma signal of the current block according to an intra prediction mode for a luminance sample of the current block.
Abstract:
The present invention relates to a method and device for sharing a candidate list. A method of generating a merging candidate list for a predictive block may include: producing, on the basis of a coding block including a predictive block on which a parallel merging process is performed, at least one of a spatial merging candidate and a temporal merging candidate of the predictive block; and generating a single merging candidate list for the coding block on the basis of the produced merging candidate. Thus, it is possible to increase processing speeds for coding and decoding by performing inter-picture prediction in parallel on a plurality of predictive blocks.