Prediction method and apparatus using reference block

The present invention relates to a prediction method and apparatus using a reference block, in which, in encoding and decoding a video, a prediction mode may be selected from among a plurality of prediction modes using prediction mode information for a block to be predicted, and prediction may be performed on the block to be predicted on the basis of the selected prediction mode. The prediction mode information may include information associated with a reference block, where the reference block may include at least one of a spatially adjacent block spatially adjacent to a block to be predicted and a temporally adjacent block temporally adjacent to the block to be predicted. If a plurality of prediction modes are selected, a prediction mode to be used for predicting a block to be predicted among the selected plurality of prediction modes may be determined by signaling of prediction mode determination information. 本发明涉及一种使用参考块的预测方法和装置，其中，在对视频进行编码和解码中，可使用用于将被预测的块的预测模式信息从多个预测模式之中选择预测模式，并可基于选择的预测模式对将被预测的块执行预测。预测模式