Imaging apparatus, imaging method and computer-readable recording medium storing imaging program which store frame image data such that a thinning rate is higher for older frame image data

Abstract

An image data imaged consecutively is divided into three groups in time series. As for a first group imaged most newly, all imaged image data are held in buffers. The image data of a second group is divided again into subgroups at every 2images. In the second group, the number of pieces of image data to be recorded in a certain subgroup is twice the number of pieces of image data held in the buffer in the subgroup imaged in the past adjoining the certain subgroup. In a third group, the image data having been held in the buffer included in the subgroup imaged in the earliest in the second group will be all held in the buffer.