Method for extracting object images and method for detecting movements thereof

Claim 1

A method for detecting a movement of an image, wherein a movement of an image is detected from the image having a background and an object, the method for detecting a movement of an image comprises the steps of: i) cutting out a first image which falls in a region inside of a view window having a predetermined size which is smaller than the entire image, from the image, ii) detecting a contour line of the object which is embedded in said cut-out first image, iii) after a predetermined time has elapsed, cutting out a second image which falls in the region inside of said view window and which includes essentially the same object as said first image, from said image, iv) detecting a contour line of the object which is embedded in said cut-out second image, v) calculating a difference between said contour line which has been detected from said cut-out first image, and said contour line which has been detected from said cut-out second image, and vi) automatically detecting a movement of the background of the image from said calculated difference.

Claim 2

A method for detecting a movement of an image, wherein a movement of an image is detected from the image having a background and an object, the method for detecting a movement of an image comprises the steps of: i) cutting out a first image which falls in a region inside of a view window having a predetermined size which is smaller than the entire image, from the image, ii) detecting a contour line of the object which is embedded in said cut-out first image, iii) after a predetermined time has elapsed, cutting out a second image which falls in the region inside of said view window and which includes essentially the same object as said first image, from said image, iv) detecting a contour line of the object which is embedded in said cut-out second image, v) calculating a difference between said contour line which has been detected from said cut-out first image, and said contour line which has been detected from said cut-out second image, and vi) automatically detecting a movement of the background of the image from said calculated difference.

Claim 6

A method for detecting a movement of an image, wherein a movement of an image is detected from the image having a background and an object, the method for detecting a movement of an image comprising the steps of: i) cutting out a first image which falls in a region inside of a view window having a predetermined size which is smaller than the entire image, from the image, ii) detecting a contour line of the object which is embedded in said cut-out first image, iii) after a predetermined time has elapsed, cutting out a second image which falls in the region inside of said view window and which includes essentially the same object as said first image, from said image, iv) detecting a contour line of the object which is embedded in said cut-out second image, v) calculating a difference between said contour line which has been detected from said cut-out first image, and said contour line which has been detected from said cut-out second image, vi) automatically detecting a movement of the background of the image from said calculated difference, and vii) detecting a candidate for a predetermined object within the image by extracting the background of the image based on said movement of the background automatically detected in step vi).

Claim 7

A method for detecting a movement of an image, wherein a movement of an image is detected from the image having a background and an object, the method for detecting a movement of an image comprising the steps of: i) cutting out a first image which falls in a region inside of a view window having a predetermined size which is smaller than the entire image, from the image, ii) detecting a contour line of the object which is embedded in said cut-out first image, iii) after a predetermined time has elapsed, cutting out a second image which falls in the region inside of said view window and which includes essentially the same object as said first image, from said image, iv) detecting a contour line of the object which is embedded in said cut-out second image, v) calculating a difference between said contour line which has been detected from said cut-out first image, and said contour line which has been detected from said cut-out second image, vi) automatically detecting a movement of the background of the image from said calculated difference, and vii) detecting a candidate for a predetermined object within the image by extracting the background of the image based on said movement of the background automatically detected in step vi).

Claim 10

A method for detecting a movement of an image, wherein a movement of the image is detected from a plurality of images, in which identical object images are embedded together with backgrounds and which are taken at a plurality of times having a predetermined time difference therebetween, the method for detecting a movement of an image comprises the steps of: i) (a) detecting contour lines of the object images, which are embedded in the plurality of images, (b) calculating a first difference between the plurality of images based on said contour lines detected in step i) (a), and (c) detecting a movement of the image in an in-plane parallel direction, the movement being detected from said first difference calculated in step i) b), ii) (a) detecting contour lines of the object images, which are embedded in the plurality of images, said contour lines detected in step ii) (a) extending in a radial direction, (b) calculating a second difference between the plurality of images based on said contour lines extending in the radial direction detected in step ii) (a), and (c) detecting a movement of the image in an in-plane rotating direction, the movement being detected from said second difference calculated in step ii) (b), iii) (a) detecting contour lines of the object images, which are embedded in the plurality of images, said contour lines detected in step iii) (a) extending in an annular direction, (b) calculating a third difference between the plurality of images based on said contour lines extending in the annular direction detected in step iii) (a), and (c) detecting a movement of the image in the radial direction, the movement being detected from said third difference calculated in step iii) (b), and iv) detecting a movement of the image in accordance with said movement of said image in the in-plane parallel direction detected in step i), and at least one of said movements in the in-plane rotating direction detected in step ii) and said movement in the radial direction detected in step iii).

Claim 11

A method for detecting a movement of an image, wherein a movement of the image is detected from a plurality of images, in which identical object images are embedded together with backgrounds and which are taken at a plurality of times having a predetermined time difference therebetween, the method for detecting a movement of an image comprises the steps of: i) (a) detecting contour lines of the object images, which are embedded in the plurality of images, (b) calculating a first difference between the plurality of images based on said contour lines detected in step i) (a), and (c) detecting a movement of the image in an in-plane parallel direction, the movement being detected from said first difference calculated in step i) b), ii) (a) detecting contour lines of the object images, which are embedded in the plurality of images, said contour lines detected in step ii) (a) extending in a radial direction, (b) calculating a second difference between the plurality of images based on said contour lines extending in the radial direction detected in step ii) (a), and (c) detecting a movement of the image in an in-plane rotating direction, the movement being detected from said second difference calculated in step ii) (b), iii) (a) detecting contour lines of the object images, which are embedded in the plurality of images, said contour lines detected in step iii) (a) extending in an annular direction, (b) calculating a third difference between the plurality of images based on said contour lines extending in the annular direction detected in step iii) (a), and (c) detecting a movement of the image in the radial direction, the movement being detected from said third difference calculated in step iii) (b), and iv) detecting a movement of the image in accordance with said movement of said image in the in-plane parallel direction detected in step i), and at least one of said movements in the in-plane rotating direction detected in step ii) and said movement in the radial direction detected in step iii).