Image processing method and apparatus, electronic device, and storage medium

An electronic device, comprising:

• at least one processor;
• and a memory communicatively connected to the at least one processor, wherein the memory stores a computer program that, when executed by the at least one processor, causes the at least one processor to implement operations comprising:
• obtaining a residual coefficient matrix of a target image, wherein the residual coefficient matrix comprises at least one non-zero coefficient;
• determining a maximum scan ordinal for the residual coefficient matrix;
• sequentially reading a predetermined number of residual coefficients in the residual coefficient matrix in a horizontal scanning mode;
• with respect to the read residual coefficients, updating an encoding quantity parameter for the residual coefficient matrix based on an ordinal comparison result between a scan ordinal of each of the read residual coefficients and the maximum scan ordinal and a coefficient value of each of the read residual coefficients, wherein the scan ordinal is determined based on a predetermined scanning mode that is different from the horizontal scanning mode;
• and
• determining an encoding bit number of the residual coefficient matrix based on a final encoding quantity parameter after reading all residual coefficients in the residual coefficient matrix.

A non-transitory computer-readable storage medium, storing a computer program, wherein the computer program, when executed by a processor, causes the processor to implement operations comprising:

• obtaining a residual coefficient matrix of a target image, wherein the residual coefficient matrix comprises at least one non-zero coefficient;
• determining a maximum scan ordinal for the residual coefficient matrix;
• sequentially reading a predetermined number of residual coefficients in the residual coefficient matrix in a horizontal scanning mode;
• with respect to the read residual coefficients, updating an encoding quantity parameter for the residual coefficient matrix based on an ordinal comparison result between a scan ordinal of each of the read residual coefficients and the maximum scan ordinal and a coefficient value of each of the read residual coefficients, wherein the scan ordinal is determined based on a predetermined scanning mode that is different from the horizontal scanning mode;
• and
• determining an encoding bit number of the residual coefficient matrix based on a final encoding quantity parameter after reading all residual coefficients in the residual coefficient matrix.