Encoding methods and equipment and storage media

Abstract

The invention relates to a method for predicting chromatic masses, a decoding device, a method for encoding, a encoding device, and a means of non-temporal storage. The method includes the following steps: bit stream separation to obtain the first indicator information; performing a reduction sampling operation on the first luminance block using the first filter when the value of the first indicator information is the first value, or using the second filter when the value of the first indicator information is the second value, to obtain the second luminance block, where the first luminance block is the luminance block corresponding to the current luminance block; obtaining the chroma and luminance color samples; The system obtains linear model coefficients based on hue and luminance samples; and obtains predicted values ​​of the current hue block based on the second luminance block and linear model coefficients.