Cross component prediction of chroma samples

A video processing apparatus, comprising:

• a memory storing a set of instructions;
• and
• one or more processors configured to execute the set of instructions to cause the apparatus to perform:
• determining a first value associated with a chroma sample, by applying a first gradient pattern to reconstructed values of a first plurality of luma samples;
• determining a second value associated with the chroma sample, by applying a down-sampling filter to reconstructed values of a second plurality of luma samples;
• and
• predicting the chroma sample based on the first value and the second value.

A non-transitory computer readable medium that stores a bitstream of video for processing according to a method comprising:

• determining a first value associated with a chroma sample, by applying a first gradient pattern to reconstructed values of a first plurality of luma samples;
• determining a second value associated with the chroma sample, by applying a down-sampling filter to reconstructed values of a second plurality of luma samples;
• and
• predicting the chroma sample based on the first value and the second value.