ADJUSTMENT VALUE CALCULATION METHOD

A program causes a computer to execute a process that includes: adjusting a difference between a first environment map created based on a feature of a given image among captured first time-series images and a second environment map created based on a feature of a given image among second time-series images captured separately from the first time-series images; comparing a position of an image related to a position and orientation calculated based on information on the first environment map with a position of an image related to a position and orientation calculated based on information on the second environment map, and calculating an adjustment value for adjusting a difference between the first environment map and the second environment map based on a result of the comparison.