1. An imaging apparatus comprising: an imaging section for imaging a subject using an imaging device to generate an image signal; and a resolution conversion section for converting a resolution of the image signal captured by said imaging section and outputting the converted image signal, wherein said resolution conversion section reduces the image inputted from said imaging section to a plurality of images of different sizes and outputs an embedded image in which the plurality of size-reduced images of different sizes are embedded in the input image size from said imaging section.