1. An image processor comprising: an object extracting device configured to extract an object region from original image data; an object separating device configured to separate the extracted object region from another region; a first filtering device configured to subject the object region to an out-of-focus filtering processing and to output first image data; a second filtering device configured to subject the another region to an out-of-focus filtering processing and to output second image data; an image synthesizing device configured to synthesize the first image data and the second image data; a displaying device configured to display the synthesized image data and the original image data, which are not subjected to the out-of-focus filtering processing; a region splitting device configured to split the synthesized image data into plural regions; a high-frequency component obtaining device configured to obtain high-frequency components in each of the plural regions; a high-frequency component analyzing device configured to analyze the high-frequency components thus obtained by the region splitting device; and a zooming device configured to zoom a region among the plural regions, which has higher frequency components than the other regions of the plural regions.