Image coding method, image decoding method, and recording medium

An image coding method in which offset is applied when an image is coded, the offset being of at least two types including edge offset and band offset, the image coding method comprising:

• obtaining a pixel signal of a current region to be processed;
• calculating offset information including at least one of a location from which the offset information for the current region is obtained, a total number of blocks which share the offset information, a pattern of partitioning the current region, a pixel classification method for classifying pixels into categories, a category index number of band offset, or an offset value;
• applying offset to the current region using the offset information, the offset being applied with adjustment to the offset value when a predetermined condition is satisfied;
• coding the offset information;
• outputting an offset-applied signal generated by the applying of offset;
• and
• controlling the applying of offset.