Generating 3-dimensional maps of a scene using passive and active measurements
First Claim
1. A method for acquiring three-dimensional (3D) maps, comprising:
- analyzing at least one image acquired by a passive sensor to identify a plurality of objects in the at least one image;
classifying the plurality of objects as any of;
a stationary object, a non-stationary object, a suspicious object, and a non-suspicious object;
determining, based on the classification, whether to passively measure a distance to each of the plurality of objects;
passively measuring the distance to at least one of the plurality of objects based on the determination;
wherein the distance to the at least one object is passively measured, for each object classified as a stationary object, when a previous distance to the object is not available;
actively measuring a distance to some of the plurality of objects, wherein the distance to one of the same of the plurality of objects is actively measured when the distance to the object cannot be passively measured; and
generating a 3D map of a scene based on the distance measured to each of the plurality of objects.
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Accused Products
Abstract
A method and apparatus for generating 3D-maps for acquiring three-dimensional (3D) maps are presented. The method includes analyzing at least one image acquired by a passive sensor to identify a plurality of objects in the at least one image; classifying the plurality of objects; determining, based on the classification, whether to passively measure a distance to each of the plurality of objects; passively measuring the distance to at least one of the plurality of objects based on the determination; actively measuring a distance to some of the plurality of objects, wherein the distance to one of the same of the plurality of objects is actively measured when the distance to the object cannot be passively measured; and generating a 3D map of a scene based on the distance measured to each of the plurality of objects.
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Citations
18 Claims
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1. A method for acquiring three-dimensional (3D) maps, comprising:
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analyzing at least one image acquired by a passive sensor to identify a plurality of objects in the at least one image; classifying the plurality of objects as any of;
a stationary object, a non-stationary object, a suspicious object, and a non-suspicious object;determining, based on the classification, whether to passively measure a distance to each of the plurality of objects; passively measuring the distance to at least one of the plurality of objects based on the determination; wherein the distance to the at least one object is passively measured, for each object classified as a stationary object, when a previous distance to the object is not available; actively measuring a distance to some of the plurality of objects, wherein the distance to one of the same of the plurality of objects is actively measured when the distance to the object cannot be passively measured; and generating a 3D map of a scene based on the distance measured to each of the plurality of objects. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An apparatus for acquiring three-dimensional (3D) maps, comprising:
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a passive sensor for acquiring images of a scene; an active sensor for measuring distances from objects in the scene; and a processing system, wherein the processing system is configured to; analyze at least one image acquired by the passive sensor to identify a plurality of objects in the at least one image; classify the plurality of objects as any of;
a stationary object, a non-stationary object, a suspicious object, and a non-suspicious object;determine, based on the classification, whether to passively measure a distance to each of the plurality of objects; passively measure the distance to at least one of the plurality of objects based on the determination; wherein the distance to the at least one object is passively measured, for each object classified as a stationary object, when a previous distance to the object is not available; actively measure, by the active sensor, a distance to some of the plurality of objects, wherein the distance to one of the plurality of objects is actively measured when the distance to the object cannot be passively measured; and generate a 3D map of a scene based on the distance measured to each of the plurality of objects.
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18. A method for acquiring three-dimensional (3D) maps, comprising:
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acquiring at least one image by a passive sensor; segmenting the at least one image to render a segmentation map; classifying a plurality of pixels in each segment identified in the segmentation map as any of;
a stationary pixel, a non-stationary pixel, a suspicious pixel, and a non-suspicious pixel;determining, based on the classification, whether to passively measure a distance to each of the plurality of pixels; passively measuring the distance to at least one of the plurality of pixels based on the determination; wherein the distance to the at least one pixel is passively measured, for each pixel classified as a stationary pixel, when a previous distance to the pixel is not available; actively measuring a distance value to each pixel of a first number of pixels in each segment identified in the segmentation map, wherein the first number of pixels is less than the number of pixels in each segment; computing a distance value to each pixel in the segment using the distance of pixel in the first number of pixels; and generating a 3D map of a scene based on the measured and computed distance values.
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Specification