SYSTEM AND METHOD USING COMPLEX CENTROIDS FOR DETECTING OBJECT-OF-INTEREST SPEEDS FROM TWO DIMENSIONAL PICTURES
A traffic monitoring system includes a first car moving on a first path; a camera having a field of vision including at least a portion of the first path; and a computing system. The computing system receives a plurality of images from the camera. The computing system has a processor. When instructed, the processor performs circling a perimeter of the first car on each of the images with a first rectangle; composing a first set of points, each point of the first set of points representing a center of the first rectangle; finding a first centroid using the first set of points, wherein the first centroid represents the first path; and calculating a speed of the first car using the first centroid.
1 . A traffic monitoring system, comprising
a camera having a field of vision including at least a portion of the first path; and
a computing system, the computing system receiving a plurality of images from the camera, the images includes a first car moving on a first path, the computing system having a processor, when instructed, the processor performs
circling a perimeter of the first car on each of the images with a first rectangle;
composing a first set of points, each point of the first set of points representing a center of the first rectangle;
finding a first centroid using the first set of point, wherein the first centroid represents the first path; and
calculating a speed of the first car using the first centroid.
2 . The traffic monitoring system according to claim 1 , wherein the first centroid is selected from a plurality of potential centroid candidates, the first centroid produces a least summation of distances between the first centroid and the first set of points compared to other members of the plurality of potential centroid candidates.
3 . The traffic monitoring system according to claim 1 , wherein the first centroid is one selected from a point, a straight line, a curved line, and a plain.
4 . The traffic monitoring system according to claim 3 , when the first centroid is a curved line, the first centroid is parabolic or polynomial.
5 . The traffic monitoring system according to claim 1 , wherein the first centroid includes a slope parameter and a shift parameter.
6 . The traffic monitoring system according to claim 5 , wherein the slope parameter and the shift parameter are set as to produce a least summation of distances between the first centroid and the first set of points.
7 . The traffic monitoring system according to claim 1 , wherein the images are taken by the camera with a fixed time interval.
8 . The traffic monitoring system according to claim 7 , wherein a first speed of the first car is calculated using the fixed time interval.
9 . The traffic monitoring system according to claim 1 , comprising a second car moving on a second path, the processor finds a second centroid representing the second path.
10 . The traffic monitoring system according to claim 9 , wherein a distance between the first centroid and the second centroid is set as 12 feet.
11 . A computing system, comprising:
a non-transitory computer-readable medium comprising instructions which, when executed by a processor of the computing system, causes the processor to perform the steps of:
receiving a plurality of images taken by a traffic camera, the images includes a first car moving on a first path;
circling a perimeter of the first car on each of the images with a first rectangle;
composing a first set of points, each point of the first set of points representing a center of the first rectangle;
finding a first centroid using the first set of point, wherein the first centroid represents the first path;
calculating a speed of the first car using the first centroid.
12 . The computing system according to claim 11 , wherein the first centroid is selected from a plurality of potential centroid candidates, the first centroid produces a least summation of distances between the first centroid and the first set of points compared to other members of the plurality of potential centroid candidates.
13 . The computing system according to claim 11 , wherein the first centroid is one selected from a point, a straight line, a curved line, and a plain.
14 . The computing system according to claim 13 , when the first centroid is a curved line, the first centroid is parabolic or polynomial.
15 . The computing system according to claim 11 , wherein the first centroid includes a slope parameter and a shift parameter.
16 . The computing system according to claim 15 , wherein the slope parameter and the shift parameter are set as to produce a least summation of distances between the first centroid and the first set of points.
17 . The computing system according to claim 11 , wherein the images are taken by the traffic camera with a fixed time interval.
18 . The computing system according to claim 11 , wherein a first speed of the first car is calculated using the fixed time interval.
19 . The computing system according to claim 11 , comprising a second car moving on a second path, the processor finds a second centroid representing the second path.
20 . The computing system according to claim 19 , wherein a distance between the first centroid and the second centroid is set as 12 feet.