1. An image processing apparatus, comprising: a first input section, arranged to input image data; an extractor, arranged to extract, from the image data, pointer information for specifying a storage location of original data of the image data and image process information representing whether the image data is attained as a result of an image process on the original data; an obtainer, arranged to obtain selection information representing which of the image data and the original data is used; a converter, arranged to convert the image data into vector data when no pointer information is extracted, when the image process information represents that no process has been done, or when the selection information represents use of the image data; a second input section, arranged to input the original data on the basis of the pointer information when the pointer information is extracted, the image process information represents that the process has been done, and the selection information represents use of the original data; and an image processor, arranged to form an image on the basis of the vector data or the original data.