METHOD, DEVICE AND SYSTEM FOR ENCODING AND DECODING IMAGE

摘要

Disclosed are methods, apparatuses, and systems for encoding and decoding an image. The present invention provides an intra prediction unit that receives an input image, removes high frequency ingredients by low pass filtering an encoded luma pixel value in the input image during intra prediction, and generates a prediction block by predicting a chroma pixel value by using a low pass filter (LPF) LM chroma mode for applying an LM chroma mode, which is an extended chroma mode technique for generating a prediction block by predicting the chroma pixel value by applying a correlation between color planes to the luma pixel value having removed therefrom the high frequency ingredients.

主权项

1. An image encoding apparatus comprising:
an intra prediction unit receiving an input image, removing high frequency ingredients by low pass filtering pixel values of an encoded luma pixel in the input image during intra prediction, and generating a prediction block by predicting a chroma pixel value by using a low pass filter (LPF) LM chroma mode for applying an LM chroma mode, and wherein the LM Chroma Mode which is an extended chroma mode technique generates a prediction block by predicting the chroma pixel value by applying a correlation between color planes to a luma pixel value having removed therefrom the high frequency ingredients.