Method of estimating amount of ink consumed and apparatus for estimating amount of ink consumed

An apparatus for estimating an amount of ink consumed when an inkjet printing apparatus performs printing, the apparatus comprising:

• a printing data obtaining unit configured to obtain printing data for a plurality of pages;
• a region setting unit configured to set, for each of the plurality of pages, at least two regions in a printing region determined based on the printing data, the two regions including a first region and a second region;
• a first estimating unit configured to calculate a first amount of ink for each ink color, the first amount of ink being an amount of ink required to print a high-resolution image created based on the printing data and corresponding to the first region;
• a second estimating unit configured to calculate a second amount of ink for each ink color, the second amount of ink being an amount of ink required to print a low-resolution image created based on the printing data and corresponding to the second region;
• and
• a total-amount-of-ink calculating unit configured to calculate, for each ink color, a total amount of ink consumed by printing of the printing data, from the first amount of ink and the second amount of ink, wherein
• the printing data obtaining unit obtains, as the printing data, data generated by performing a rasterizing process on printing original data including a plurality of types of objects, and
• the region setting unit sets the first region and the second region based on a type of object included in data of each pixel.