Image shake correction image processing apparatus and program

Abstract

An image processing apparatus comprising: a block selector that selects one of blocks that contain an amount of features, larger than a predetermined amount of features, from among a plurality of blocks which compose a particular one of a plurality of frames of a moving image of a subject; a motion calculator that calculates a motion vector of each of blocks of a second particular one of the plurality of frames next to the first-mentioned particular frame and corresponding to a respective one of the selected blocks; a displacement calculator that calculates a displacement of the second particular frame based on the calculated motion vectors; and an image shake corrector that corrects an image shake in the moving image based on the calculated displacement.

1. An image processing apparatus comprising:
 a feature detector that detects features of an image in each of a plurality of blocks that form each of a plurality of frames which in turn compose a moving image of a subject; 
 a block selector that selects blocks of a first one of the frames that contain an amount of the detected features that is larger than a predetermined amount; 
 a motion calculator that calculates a motion of respective blocks of a following second one of the frames which correspond to the selected blocks of the first one of the frames; 
 a total motion vector calculator that calculates a total motion vector of the second one of the frames based on the calculated motions of the respective blocks; 
 an image shake corrector that corrects an image shake in the moving image based on the total motion vector calculated by the total motion vector calculator; and 
 an encoder which encodes the moving image corrected by the image shake corrector for display; 
 wherein the feature detector and the encoder are controlled to operate in parallel. 
 
     
     
       2. The image processing apparatus of  claim 1 , wherein at least one of the feature detector and the motion calculator is controlled to operate such that a received amount of image data to be processed does not exceed a predetermined amount. 
     
     
       3. An image processing method comprising:
 detecting, using an image processor, features of an image in each of a plurality of blocks that form each of a plurality of frames which in turn compose a moving image of a subject; 
 selecting blocks of a first one of the frames that contain an amount of the detected features that is larger than a predetermined amount; 
 calculating a motion of respective blocks of a following second one of the frames which correspond to the selected blocks of the first one of the frames; 
 calculating a total motion vector of the second one of the frames based on the calculated motions of the respective blocks; 
 correcting an image shake in the moving image based on the calculated total motion vector; 
 encoding the corrected moving image for display; and 
 controlling the detecting and encoding operations to be performed in parallel. 
 
     
     
       4. A computer readable medium having stored thereon a program for performing functions comprising:
 detecting, using an image processor, features of an image in each of a plurality of blocks that form each of a plurality of frames which in turn compose a moving image of a subject picked up by an image capture apparatus; 
 selecting blocks of a first one of the frames that contain an amount of the detected features that is larger than a predetermined amount; 
 calculating a motion of respective blocks of a following second one of the frames which correspond to the selected blocks of the first one of the frames; 
 calculating a total motion vector of the second one of the frames based on the calculated motions of the respective blocks; 
 correcting an image shake in the moving image based on the calculated total motion vector; 
 encoding the corrected moving image for display; and 
 controlling the detecting and encoding operations to be performed in parallel.