US 8,576,308 B2Granted

Image processing method and image processing apparatus

AssigneeAltek Corporation

InventorsChe-Lun Chuang, Chung-Ta Wu, Hong-Long Chou

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Abstract

An image processing method and an image processing apparatus are provided. In the image processing method, each of a plurality of original images is divided into K bands, where K is a positive integer greater than or equal to 1. A plurality of local motions of each band in any two adjacent of the original images are calculated, and a global motion of each band is calculated according to the local motions of the band. A horizontal component velocity and a vertical component velocity of each band are generated according to the global motion and a capturing time difference. A plurality of transformation matrixes corresponding to the bands are generated according to the horizontal component velocities, the vertical component velocities, a row readout time, and the width of a valid area. One of the two adjacent original images is transformed according to the transformation matrixes to generate a compensated image.

Claims10

Dependent claims

An image processing method, for continuously capturing a plurality of original images according to a capturing time difference, wherein a valid area of the original images has a size of M×N, M is a length of the valid area, N is a width of the valid area, and M and N are positive integers, the image processing method comprising:

dividing each of the original images into K bands, wherein K is a positive integer greater than or equal to 1;
calculating a plurality of local motions of each of the bands in any two adjacent of the original images, and calculating a global motion of each of the bands according to the local motions of the band;
generating a plurality of horizontal component velocities and a plurality of vertical component velocities of the bands according to the capturing time difference and the global motions respectively;
generating a plurality of transformation matrixes corresponding to the bands according to the horizontal component velocities, the vertical component velocities, a row readout time, and the width of the valid area;
and
transforming one of the two adjacent original images according to the transformation matrixes to generate a compensated image.

3 more elements

An image processing apparatus, for continuously capturing a plurality of original images according to a capturing time difference, wherein a valid area of the original images has a size of M×N, M is a length of the valid area, N is a width of the valid area, and M and N are positive integers, the image processing apparatus comprising:

a velocity estimation module, dividing each of the original images into K bands, wherein K is a positive integer greater than or equal to 1, calculating a plurality of local motions of each of the bands in any adjacent two of the original images, calculating a global motion of each of the bands according to the local motions of the band, and generating a plurality of horizontal component velocities and a plurality of vertical component velocities of the bands according to the capturing time difference and the global motions respectively;
and
a compensator, coupled to the velocity estimation module, generating a plurality of transformation matrixes corresponding to the bands according to the horizontal component velocities, the vertical component velocities, a row readout time, and the width of the valid area, and transforming one of the two adjacent original images according to the transformation matrixes to generate a compensated image.

Dependencies are inferred from the claim text.