Least Square Intra-Prediction Mode Prediction Based Video Compression

Abstract

In H.264/AVC and HEVC video coding intra-prediction video compression step plays an important role in. Intra prediction is used whenever the scene changes quickly over time. In intra-prediction mode, the I-frame is divided into blocks and for each of this block a prediction mode for pixels’ value of the block is to be found from nine possible modes for prediction. This requires comparison with given block’s pixel values and computation of Sum of Absolute Error for each of the nine cases, hence is computationally intensive activity. Here a least-square method is proposed to predict the mode of intra prediction of pixel values, based on the neighboring pixels. For this neighboring block’s features are used. To further reduce the complexity different variants of the proposed method are proposed. The simulation results have demonstrated a reduction of more than 30% in computationally cost without adversely affecting the visual quality of the scene.