Image tracking system and method and observer tracking autostereoscopic display
First Claim
Patent Images
1. An image tracking system which determines a position of a target image as the position of the target image varies, the image tracking system comprising:
- first means for presenting a sequence of images,second means for determining the position of the target image in a previously presented image from the first means,third means for determining movement of the target image between the previously presented image and a subsequently presented image from the first means, andfourth means for producing an output indicating the position of the target image in the subsequently presented image as the position determined by the second means modified by the movement determined by the third means,wherein the third means is arranged to determine movement at a plurality of image elements in a second image portion which is wholly within and smaller than the target image,the third means is arranged to determine translational movement of the target image, andthe third means is arranged to solve a set of equations;
space="preserve" listing-type="equation">f.sub.1 (x.sub.i,y.sub.i)=f.sub.2 (X.sub.i,y.sub.i)+Δ
xδ
f.sub.2 (x.sub.i,y.sub.i)/δ
x+Δ
yδ
f.sub.2 (x.sub.i,y.sub.i)/δ
ywhere xi and yi are Cartesian coordinates of an ith image element, i is each integer such that 1≦
i≦
j and j is an integer greater than one, f1 and f2 are functions representing the previously and subsequently presented images and Δ
x and Δ
y are the Cartesian components of the movement.
1 Assignment
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Accused Products
Abstract
An image tracking system which is configured to present a sequence of images, determine the position of a target image in a previously presented image, determine movement of the target image between the previously presented image and a subsequently presented image, and indicate the position of the target image in the subsequently presented image as the aforementioned determined position modified by the determined movement.
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Citations
28 Claims
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1. An image tracking system which determines a position of a target image as the position of the target image varies, the image tracking system comprising:
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first means for presenting a sequence of images, second means for determining the position of the target image in a previously presented image from the first means, third means for determining movement of the target image between the previously presented image and a subsequently presented image from the first means, and fourth means for producing an output indicating the position of the target image in the subsequently presented image as the position determined by the second means modified by the movement determined by the third means, wherein the third means is arranged to determine movement at a plurality of image elements in a second image portion which is wholly within and smaller than the target image, the third means is arranged to determine translational movement of the target image, and the third means is arranged to solve a set of equations;
space="preserve" listing-type="equation">f.sub.1 (x.sub.i,y.sub.i)=f.sub.2 (X.sub.i,y.sub.i)+Δ
xδ
f.sub.2 (x.sub.i,y.sub.i)/δ
x+Δ
yδ
f.sub.2 (x.sub.i,y.sub.i)/δ
ywhere xi and yi are Cartesian coordinates of an ith image element, i is each integer such that 1≦
i≦
j and j is an integer greater than one, f1 and f2 are functions representing the previously and subsequently presented images and Δ
x and Δ
y are the Cartesian components of the movement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 17, 21, 22, 23, 24, 25, 26, 27)
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15. An image tracking system which determines a position of a target image as the position of the target image varies, the image tracking system comprising:
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first means for presenting a sequence of images, second means for determining the position of the target image in a previously presented image from the first means, third means for determining movement of the target image between the previously presented image and a subsequently presented image from the first means, and fourth means for producing an output indicating the position of the target image in the subsequently presented image as the position determined by the second means modified by the movement determined by the third means, wherein the second means is arranged to search for the target image in a first image portion which is smaller than the images of the sequence and which includes the position indicated by the fourth means, and the second means is arranged to search for the target image in the whole of the previously presented image if the search in the first image portion is unsuccessful.
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16. An image tracking system which determines a position of a target image as the position of the target image varies, the image tracking system comprising:
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first means for presenting a sequence of images, second means for determining the position of the target image in a previously presented image from the first means, third means for determining movement of the target image between the previously presented image and a subsequently presented image from the first means, and fourth means for producing an output indicating the position of the target image in the subsequently presented image as the position determined by the second means modified by the movement determined by the third means, wherein the second means is arranged to search for the target image in a first image portion which is smaller than the images of the sequence and which includes the position indicated by the fourth means, and the second means is arranged to search for the target image in the whole of an initial previously presented image.
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18. An image tracking system which determines a position of a target image as the position of the target image varies, the image tracking system comprising:
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first means for presenting a sequence of images, second means for determining the position of the target image in a previously presented image from the first means, third means for determining movement of the target image between the previously presented image and a subsequently presented image from the first means, and fourth means for producing an output indicating the position of the target image in the subsequently presented image as the position determined by the second means modified by the movement determined by the third means, wherein the second means is arranged to search for the target image in a first image portion which is smaller than the images of the sequence and which includes the position indicated by the fourth means, the second means is arranged to perform template matching of the target image at a plurality of first positions in the first image portion to find the best match, and the second means is arranged to perform template matching of the target image at a plurality of second positions which are more finely spaced than the first positions and which are disposed adjacent a position corresponding to the best match.
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19. An image tracking system which determines a position of a target image as the position of the target image varies, the image tracking system comprising:
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first means for presenting a sequence of images, second means for determining the position of the target image in a previously presented image from the first means, third means for determining movement of the target image between the previously presented image and a subsequently presented image from the first means, and fourth means for producing an output indicating the position of the target image in the subsequently presented image as the position determined by the second means modified by the movement determined by the third means, wherein the second means is arranged to search for the target image in a first image portion which is smaller than the images of the sequence and which includes the position indicated by the fourth means, the second means is arranged to perform template matching of the target image at a plurality of first positions in the first image portion to find the best match, and the second means is arranged to perform a correlation between the target image and a region corresponding to the first position and a correlation between the target image and a region corresponding to the second position and to select the highest correlation. - View Dependent Claims (20)
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28. An image tracking method for sequentially presented images, comprising determining the position of a target image in a previously presented image, determining movement of the target image between the previously presented image and a subsequently presented image, and indicating the position of the target image in the subsequently presented image as the position in the previously presented image modified by the determined movement
wherein the step of determining movement comprises the steps of determining movement at a plurality of image elements in a second image portion which is wholly within and smaller than the target image, determining translational movement of the target image, and solving a set of equations: -
space="preserve" listing-type="equation">f.sub.1 (x.sub.i, y.sub.i)=f.sub.2 (x.sub.i,y.sub.i)+Δ
xδ
f.sub.2 (x.sub.i,y.sub.i)/δ
x+Δ
yδ
f.sub.2 (x.sub.i,y.sub.i)/δ
ywhere xi and yi are Cartesian coordinates of an ith image element, i is each integer such that 1≦
i≦
j and j is an integer greater than one, f1 and f2 are functions representing the previously and subsequently presented images and Δ
x and Δ
y are the Cartesian components of the movement.
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Specification