Image correction method to compensate for point of view image distortion
First Claim
1. A method of compensating for point of view image distortion in 3D stereoscopic image projections for a moving point of view, the method comprising the steps of:
- a. determining a motion profile of the moving point of view;
b. establishing a frame of view onto which an image is to be projected;
c. determining the temporal and spatial relationship between the moving point of view and the frame of view at each point along the moving point of view;
d. obtaining a plurality of images of the frame of view from a perspective of a moving point of view while traveling through the motion profile, the plurality of images comprising an array of image points of the frame of view;
e. transforming each of the plurality of images into a plurality of compensated images, said transformation comprising the step of re-mapping the array of image points of the frame of view using a transformation function that fits the plurality of compensated images into the size of the frame of view as observed from a stationary perspective point; and
f. projecting the plurality of compensated images onto a projection surface from the stationary perspective point in synchronization with the moving profile to substantially reduce point of view image distortion.
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Abstract
An image correction method of compensating for point of view image distortion in pictures includes the steps of obtaining an image at a first position within a predetermined frame, wherein at the first position the image is distorted due to point of view image distortion. The image obtained comprises an array of pixels. The distorted image is transformed into a compensated image by re-mapping the array of pixels of the distorted image using a predetermined transforming function that stretches the distorted image to fill the entire frame. The transformation function depends on the geometric orientation of the camera, projector, projecting surface, and viewer. The compensated image is projected at a second position different from the first position, wherein the projection of the compensated image substantially reduces point of view image distortion at the first position. This method can be employed for stationary and moving point of views. The method is particularly helpful with amusement rides for viewing 3D stereoscopic images.
197 Citations
23 Claims
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1. A method of compensating for point of view image distortion in 3D stereoscopic image projections for a moving point of view, the method comprising the steps of:
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a. determining a motion profile of the moving point of view;
b. establishing a frame of view onto which an image is to be projected;
c. determining the temporal and spatial relationship between the moving point of view and the frame of view at each point along the moving point of view;
d. obtaining a plurality of images of the frame of view from a perspective of a moving point of view while traveling through the motion profile, the plurality of images comprising an array of image points of the frame of view;
e. transforming each of the plurality of images into a plurality of compensated images, said transformation comprising the step of re-mapping the array of image points of the frame of view using a transformation function that fits the plurality of compensated images into the size of the frame of view as observed from a stationary perspective point; and
f. projecting the plurality of compensated images onto a projection surface from the stationary perspective point in synchronization with the moving profile to substantially reduce point of view image distortion. - View Dependent Claims (2, 3)
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4. A method of compensating for point of view image distortion in 3D stereoscopic image projections for a moving point of view, the method comprising the steps of:
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a. determining a motion profile of the moving point of view;
b. establishing a frame of view onto which an image is projected;
c. determining the temporal and spatial relationship between the moving point of view and the frame of view at each point along the moving point of view;
d. obtaining a plurality of images of the frame of view while traveling through the motion profile, the plurality of images comprising an array of image points of the frame of view;
e. transforming each of the plurality of images of the frame of view into a plurality of compensated images, said transformation comprising the step of re-mapping the array of image points of the frame of view using a transformation function, the transformation altering the plurality of images to form a compensated frame substantially equivalent in size to the frame of view; and
f. projecting a desired sequence of images onto the frame of view using the compensated frame, said projection being in synchronization with the moving profile so as to substantially reduce point of view image distortion from a viewer moving along the moving profile. - View Dependent Claims (5, 6, 7, 9, 10)
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8. An amusement ride attraction comprising:
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a vehicle path extending through a building;
a projection surface adjacent to the path;
a projector arranged to project a 3D motion picture onto the projection surface;
a vehicle movable along the vehicle path, the vehicle having passenger positions for accommodating passengers; and
means for compensating the 3D motion picture to reduce point of view distortion.
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11. A method of compensating for point of view image distortion comprising the steps of:
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a. obtaining an image within a predetermined frame at a first position, the image comprising an array of image points, wherein at the first position the image is distorted due to point of view image distortion;
b. transforming the distorted image into a compensated image, said transforming comprising the step of re-mapping the array of image points of the distorted image using a transforming function, the function operating on the array of image points to stretch the distorted image to fill the entire frame;
c. projecting the compensated image at a second position different from the first position, said projection of the compensated image substantially reducing point of view image distortion at the first position, wherein said image is a 3D stereoscopic image. - View Dependent Claims (12, 13)
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14. A method of compensating for point of view image distortion comprising the steps of:
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a. creating an image within a predetermined frame at a first position, wherein at the first position the image is distorted due to point of view image distortion;
b. transforming the distorted image into a compensated image using a transforming function to stretch the distorted image to fill the frame;
c. projecting the compensated image as a 3D stereoscopic image, from a second position different from the first position, wherein the image is a 3D stereoscopic image.
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15. A method of compensating for point of view image distortion of a three-dimensional stereoscopic image comprising the steps of:
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a. obtaining a left eye image at a first left eye position, and a right eye image at a first right eye position, within a predetermined frame, and with the left eye image comprising a left array of image points and with the right eye image comprising a right array of image points, wherein at the first left and first right eye positions, the images are distorted due to point of view image distortion;
b. transforming the distorted left and right eye images into a compensated left and right eye images, said transforming comprising the step of re-mapping the left and right arrays of image points of the distorted left and right eye images using a transforming function, the function operating on the left and right arrays of image points to stretch the distorted left and right eye images to fill the entire frame; and
c. projecting the compensated left eye image from a second left eye position different from the first left eye position, and projecting the compensated right eye image from a second right eye position different from the first right eye position, to form a compensated three-dimensional stereoscopic image, thereby substantially reducing point of view image distortion.
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16. A method of compensating for point of view image distortion comprising the steps of:
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projecting an image onto a projection surface at a first position;
placing a plurality of invisible markers on the projection surface;
acquiring an image of the projection surface at a second position, the image comprising an array of pixels, wherein at the second position the image is distorted due to point of view image distortion;
transforming the distorted image into a compensated image, the transforming comprising the step of re-mapping the array of pixels of the distorted image using a transformation function, the function operating on the array of pixels to stretch the distorted image using the location of the plurality of invisible makers;
projecting the compensated image at the first position, the projection of the compensated image substantially reducing point of view image distortion at the second position; and
wherein the image is a 3D stereoscopic image. - View Dependent Claims (17, 18, 19, 20)
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21. A method of compensating for point of view image distortion comprising the steps of:
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a. obtaining an image at a first position, the image comprising an array of image points, wherein at the first position the image is distorted due to point of view image distortion;
b. transforming the distorted image into a compensated image, said transforming comprising the step of re-mapping the array of image points of the distorted image using a transforming function, the function operating on the array of image points to compensate the distorted image;
c. projecting the compensated image at a second position different from the first position, said projection of the compensated image substantially reducing point of view image distortion at the first position, wherein said image is a 3D stereoscopic image. - View Dependent Claims (22, 23)
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Specification