Image correction processing apparatus and method
View Patent ↗A motion vector detecting unit detects a motion vector of each block in a shot image, which is divided into a plurality of blocks, during an optical zooming operation. A linear function calculating unit calculates for each block a linear function that represents a straight line, the slope of which is the same as that of a line passing through the center of the shot image and a representative point and which passes through a vector detection point. A hand-movement motion vector calculating unit selects at least two blocks that have the calculated linear functions, the slope of which are different from each other, and obtains an intersection of graphs of the linear functions of the selected blocks so as to calculate a motion vector caused by hand movement. A hand-movement correcting unit corrects the hand movement in the shot image based on the calculated motion vector caused by the hand movement.
1. An image correction processing apparatus, the apparatus comprising a computer controller including:
a motion vector obtaining unit that receives a detected motion vector of each block in a shot image during an optical zooming operation, wherein the shot image is divided into a plurality of blocks;
a linear function calculating unit that for each block calculates a linear function that represents a straight line, wherein the slope of straight line is the same as that of a line passing through the center of the shot image and a representative point, and passes through a vector detection point;
a hand-movement calculating unit that selects at least two blocks that have the calculated linear functions, wherein the slope of the calculated linear functions are different from each other, and configured to obtain an intersection of graphs of the linear functions of the selected blocks so as to calculate a motion vector caused by hand movement; and
a hand-movement correcting unit that corrects the hand movement in the shot image based on the calculated motion vector caused by the hand movement.
2. The image correction processing apparatus of claim 1 , wherein the linear function calculating unit further: aggregates a plurality of blocks that have the linear functions into one group, wherein the slopes of the linear functions are identical, and averages values of intercepts of the linear functions calculated in the blocks that belong to the same group; and the hand-movement calculating unit further: selects at least two groups with the intercept-averaged linear functions, wherein the slopes of the intercept-averaged linear functions are different from each other, and obtains an intersection of graphs of the linear functions of the selected groups so as to calculate the motion vector caused by the hand movement.
3. The image correction processing apparatus of claim 1 , wherein processes by the motion vector obtaining unit, the linear function calculating unit, the hand-movement calculating unit and the hand-movement correcting unit are performed during the optical zooming operation and during a normal shooting with no optical zooming operation so that the hand-movement correction is performed during the normal shooting.
4. An image correction processing method, the method comprising:
detecting a motion vector of each block in a shot image during an optical zooming operation, the image being divided into a plurality of blocks;
calculating a linear function that represents a straight line for each block, wherein the slope of the line is the same as that of a line passing through the center of the shot image and a representative point, and which passes through a vector detection point;
selecting at least two blocks that have the calculated linear functions, wherein the slope of the calculated linear functions are different from each other;
obtaining an intersection of graphs of the linear functions of the selected blocks so as to calculate a motion vector caused by hand movement; and
correcting the hand movement in the shot image based on the calculated motion vector caused by the hand movement.
5. A non-transitory computer readable storage medium having embodied thereon a computer program, the computer program executable to perform an image correction processing method, the method comprising:
detecting a motion vector of each block in a shot image during an optical zooming operation, the image being divided into a plurality of blocks;
calculating a linear function that represents a straight line for each block, wherein the slope of the line is the same as that of a line passing through the center of the shot image and a representative point, and which passes through a vector detection point;
selecting at least two blocks that have the calculated linear functions, wherein the slope of the calculated linear functions are different from each other;
obtaining an intersection of graphs of the linear functions of the selected blocks so as to calculate a motion vector caused by hand movement; and
correcting the hand movement in the shot image based on the calculated motion vector caused by the hand movement.