Data processing system and method

A data processing method, further comprising:

• setting multiple mutually adjacent regions in a two-dimensional spatial representation of multiple items of data to be compressed, according to a permissible compression error value, the multiple mutually adjacent regions including a first region adjacent to a second region, the first and second regions separately covering multiple items of data;
• expanding the second region forward to obtain an expanded second region overlapping the first region;
• calculating a compression error of the data covered by the expanded second region;
• resetting the first region according to the compression error calculated;
• and
• compressing the data covered by the first region after the resetting

An electronic device, comprising:

• at least one processor;
• and
• a memory connected to the at least one processor, the memory storing an instruction, wherein the instruction, when executed by the at least one processor, causes the electronic device to perform at least:
• setting multiple mutually adjacent regions in a two-dimensional spatial representation of multiple items of data to be compressed, according to a permissible compression error value, the multiple mutually adjacent regions including a first region adjacent to a second region, the first and second regions separately covering multiple items of data;
• expanding the second region forward to obtain an expanded second region overlapping the first region;
• calculating a compression error of the data covered by the expanded second region;
• resetting the first region according to the compression error calculated;
• and
• compressing the data covered by the first region after the resetting.