Image coding method, image decoding method, image coding apparatus, and image decoding apparatus
AssigneeKabushiki Kaisha Toshiba
InventorsTakeshi CHUJOH, Tomoo YAMAKAGE
Life of this patent
Estimating the term…
Abstract
According to an embodiment, an image coding method is for coding an image including a luminance component and color difference components. The method includes acquiring a reference image; and generating a predicted image by interpolating the luminance component and the color difference components in the reference image according to a motion vector. If a size of a block, which is designated as a unit of the interpolation, is equal to or smaller than a predetermined first threshold value, the generating includes inhibiting a bi-directional prediction, and performing only a uni-directional prediction to generate the predicted image according to the motion vector.
Claims1
An image encoding method of encoding a target image including a luminance component and color difference components, the method comprising:
- acquiring a reference image;
- selecting a bi-directional prediction or a uni-directional prediction based on a prediction mode that is explicitly or implicitly designated;
- if a size of a block, which is designated as a unit of an interpolation, is equal to or smaller than a first threshold value and if the bi-directional prediction is selected, changing the bi-directional prediction to the uni-directional prediction;
- and
- generating a predicted image by interpolating the luminance component and the color difference components in the reference image according to a motion vector.
Dependencies are inferred from the claim text.