13. The computerized image processing method according to claim 10 , further comprising: attribute determining including determining an attribute of the first document area, wherein the second area extracting includes extracting a second document area by dividing the first document area or combining the first document area with at least another different unit of a document area based on a rule corresponding to the type of the language determined at the language determining and the attribute determined at the attribute determining.
10. A computerized image processing method comprising: first area extracting including using a computer processor unit to extract at least a first document area from document image data stored in a computer memory by dividing the document image data in units of a document area; language determining including determining, using the computer processor unit, a type of a language used in the stored document image data; and second area extracting including extracting, using the computer processor unit, a second document area by dividing the first document area based on a rule corresponding to the type of the language determined at the determining, wherein the first area extracting includes white-block extracting including extracting, from a document area unit of binary document image data, a maximum white-block group by identifying a preliminary group of at least one white-block according to an evaluation function, estimating a font size based on a distribution of black blocks in document area units, and eliminating white-blocks from the preliminary group according to the estimated font size, and white-block dividing including dividing the document area unit into a plurality of document area units by using the at least one white-block in the maximum white-block group extracted at the white-block extracting as separators, wherein the white-block extracting includes extracting the plurality of document area units divided from the document area unit, placing them in a stack, and extracting another maximum white-block group from a document area unit at a top of the stack, and wherein the first area extracting includes performing the extracting the maximum white-block group, the dividing the document area unit, and the extracting the plurality of document area units until the stack is empty.