1. An image processing apparatus for recording an image on a unit region of a recording medium by performing a plurality of relative scanning operations of the recording medium and a recording head including a plurality of recording elements arranged in a certain direction, the image processing apparatus comprising: a storage unit configured to store, based on image data of the image and ratios of using a plurality of recording element groups for recording the image, each of the plurality of recording element groups including a different recording element, dot count values for the plurality of recording element groups; and a determining unit configured to determine, based on the dot count values, whether density correction data for correcting the image data needs to be generated.