Video generation device, video generation method, and recording medium

Abstract

A video is superimposed on an object in order that the object will be perceived as if the object were given a motion. This video is a video including a luminance motion component corresponding to a motion given to the object.

What is claimed is: 
     
         1 . A video generation device comprising:
 a first processor which obtains an image, the image including a spatial frequency component an absolute value of which is larger than zero and having a temporal frequency an absolute value of which is equal to or smaller than a first value, from an input video; and   a second processor which obtains a luminance motion component having a temporal frequency an absolute value of which is equal to or larger than a second value, wherein   the luminance motion component is a component corresponding to the image and the second value is larger than the first value.   
     
     
         2 . A video generation device comprising:
 an image extractor which obtains a static image from an input video; and   a luminance motion component extractor which subtracts a luminance static component, the luminance static component being obtained from the static image, from a luminance component of each of several pieces of frames in the input video so as to obtain a luminance motion component.   
     
     
         3 . A non-transitory computer readable recording medium having stored therein a program for making a computer function as the video generation device according to any one of  claim 1  or  2 . 
     
     
         4 . A video generation device comprising:
 an image extractor which obtains a static image from an input video;   a luminance motion component extractor which subtracts a luminance static component for frames in the input video from luminance components of the frames so as to obtain a luminance motion component, the luminance static component being obtained from the static image; and   an arithmetic unit which generates a second video mainly including the luminance motion component obtained for the frames in the input video.   
     
     
         5 . The device according to  claim 4 , wherein the arithmetic unit generates the second video including only the luminance motion component obtained for the frames in the input video. 
     
     
         6 . A video generation method comprising:
 an image extracting step of obtaming a static image from an input video;   a luminance motion component extracting step of subtracting a luminance static component for frames in the input video from luminance components of the frames so as to obtain a luminance motion component, the luminance static component being obtained from the static image; and   an arithmetic step of generating a second video mainly including the luminance motion component obtained for the frames in the input video.   
     
     
         7 . The method according to  claim 6 , wherein the arithmetic step generates the second video including only the luminance motion component obtained for the frames in the input video. 
     
     
         8 . A non-transitory computer readable recording medium having stored therein a program for making a computer function as the video generation device according to any one of  claim 4  or  5 .