Image generating method, object detecting method, object detecting equipment, and image generating program
First Claim
Patent Images
1. A computer readable medium having stored therein instructions for an image generating method, the method comprising:
- a first step of generating a small region panorama image group which is an image group of N images which include a shooting range common to each other, the N images being composed of a plurality of common partially overlapped regions and having independency from each other in each of the partially overlapped regions, wherein N is an integer larger than 2; and
a second step of generating, for a target image obtained by shooting at least a part of the shooting range, a predicted background image in which light source environment is the same as that of the target image with the use of the target image and the small region panorama image group.
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Abstract
A small region panorama image group (I1P, I2P, I3P) is generated in advance. The small region panorama image group (I1P, I2P, I3P) includes images including a common shooting range, being composed of a plurality of common partially overlapped regions (A, B, C, D), and having independency from each other in each partially overlapped region (A, B, C, D). With the use of the small region panorama image group (I1P, I2P, I3P), a predicted background image is generated in which light source environment is the same as that of a shot target image.
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Citations
6 Claims
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1. A computer readable medium having stored therein instructions for an image generating method, the method comprising:
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a first step of generating a small region panorama image group which is an image group of N images which include a shooting range common to each other, the N images being composed of a plurality of common partially overlapped regions and having independency from each other in each of the partially overlapped regions, wherein N is an integer larger than 2; and a second step of generating, for a target image obtained by shooting at least a part of the shooting range, a predicted background image in which light source environment is the same as that of the target image with the use of the target image and the small region panorama image group.
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2. A computer readable medium having stored therein instructions for an image generating method, the method comprising:
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a first step of generating a small region panorama image group which is an image group of N images which include a shooting range common to each other, the N images being composed of a plurality of common partially overlapped regions and having independency from each other in each of the partially overlapped regions, wherein N is an integer larger than 2; and a second step of generating, for a target image obtained by shooting at least a part of the shooting range, a predicted background image in which light source environment is the same as that of the target image with the use of the target image and the small region panorama image group, wherein the first step includes the steps of; selecting N images each including an overlapped region from a plurality of original images; judging independency of the selected N images in the overlapped region; storing, when independency is held, pats in the overlapped region of the N images as images of a partially overlapped region in the small region panorama image group; and performing, when no independency is held, re-selection of N images each including an overlapped region.
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3. A computer readable medium having stored therein instructions for an image generating method, the method comprising:
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a first step of generating a small region panorama image group which is an image group of N images which include a shooting range common to each other, the N images being composed of a plurality of common partially overlapped regions and having independency from each other in each of the partially overlapped regions, wherein N is an integer larger than 2; and a second step of generating, for a target image obtained by shooting at least a part of the shooting range, a predicted background image in which light source environment is the same as that of the target image with the use of the target image and the small region panorama image group, wherein the second step includes, when the target image spreads across a plurality of partially overlapped regions, the steps of; calculating linearization coefficients for the target image in each of the partially overlapped regions with the use of the target image and the small region panorama image group; and generating the predicted background image with the use of the calculated linearization coefficients and the small region panorama image group.
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4. A computer readable medium having stored therein instructions for an object detecting method comprising the steps of:
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a first step of generating a small region panorama image group which is an image group of N images which include a shooting range common to each other, the N images being composed of a plurality of common partially overlapped regions and having independency from each other in each of the partially overlapped regions, wherein N is an integer larger than 2; and a second step of generating, for a target image obtained by shooting at least a part of the shooting range, a predicted background image in which light source environment is the same as that of the target image with the use of the target image and the small region panorama image group; the predicted background image for a detection target image serving as the target image; and detecting an object reflected in the detection target image by comparing the detection target image and the predicted background image with each other.
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5. Object detecting equipment comprising:
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a small region panorama image group generation section for generating, with the use of a plurality of images stored in a shot image storing section, a small region panorama image group which is an image group of N images which include a shooting range common to each other, the N images being composed of a plurality of common partially overlapped regions and having independency from each other in each of the partially overlapped regions, wherein N is an integer larger than 2; and an object detection section for detecting an object reflected in a detection target image obtained by shooting at least a part of the shooting range by generating a predicted background image in which light source environment is the same as that of the detection target image is generated for the detection target image with the use of the detection target image and the small region panorama image group and comparing the detection target image and the predicted background image with each other.
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6. A computer readable program for allowing a computer to execute image generation, wherein the computer executes:
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a first step of generating a small region panorama image group having N images, wherein the N images have a common shooting range, wherein each of the N images is composed of a plurality of common partially overlapped regions within the common shooting range, wherein each of the pluralities of partially overlapping regions are substantially the same for each of the N images, and wherein each of the N images are independent from the other N−
1 images, such that a light source direction of each of the N images is different from the light source directions of the other N−
1 images, wherein N is an integer larger than 2;a second step of shooting a target image having a light source environment, wherein at least a portion of the target image is within the common shooting range, and wherein the target image includes an object in the common shooting range that is absent from the N images; and a third step of generating a predicted background image corresponding to a portion of the target image obstructed by the object, the background image having a predicted light source environment substantially similar to the light source environment of the target image, wherein the predicted background image is generated using the overlapping regions of the N images and a portion of the target image corresponding to the overlapping regions of the N images.
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Specification