Predictive Coding/Decoding Method, Corresponding Coder/Decoder, and Electronic Device

A decoding method, applied to a decoder, comprising:

• parsing a bitstream to obtain slice type information;
• when decoding a slice of an inter prediction type, using a first decoding scheme to configure a picture where the slice is located as a reference picture for the slice and decode decoding blocks employing an intra block copying, IBC, mode in the slice;
• and
• when decoding a slice of an intra prediction type, using a second decoding scheme that is different from the first decoding scheme to decode decoding blocks employing the IBC mode in the slice.

A coder, comprising:

• a type configuration means arranged to be capable of configuring types of slices;
• a first coding means arranged to code a slice of an inter prediction type, and during coding, configure a picture where the slice is located as a reference picture for the slice and use a first coding scheme to code coding blocks employing an intra block copying, IBC, mode in the slice;
• and
• a second coding means arranged to code a slice of an intra prediction type, and during coding, use a second coding scheme that is different from the first coding scheme to code coding blocks employing the IBC mode in the slice.

A decoder, comprising:

• a type parsing means arranged to be capable of parsing a bitstream to obtain slice type information;
• a first decoding means arranged to decode a slice of an inter prediction type, and during decoding, use a first decoding scheme to configure a picture where the slice is located as a reference picture for the slice and decode decoding blocks employing an intra block copying, IBC, mode in the slice;
• and
• a second decoding means arranged to decode a slice of an intra prediction type, and during decoding, use a second decoding scheme that is different from the first decoding scheme to decode decoding blocks employing the IBC mode in the slice.