Image analysis – Applications – 3-d or stereo imaging analysis
Reexamination Certificate
1998-11-09
2001-10-16
Mancuso, Joseph (Department: 2723)
Image analysis
Applications
3-d or stereo imaging analysis
C382S103000, C382S106000
Reexamination Certificate
active
06304669
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a photogrammetric analytical measurement system, in which a survey map is produced on the basis of a set of photographed pictures obtained at two different photographing positions.
2. Description of the Related Art
For example, photogrammetry is carried out at a traffic accident spot. The traffic accident spot is photographed by a camera from at least two different positions, and a survey map of the traffic accident spot is produced based on a set of photographed pictures obtained at the different positions.
In particular, a two-dimensional coordinate system is defined on each of the photographed pictures, and two-dimensional positions of the objects, which are recorded on each picture, are determined by the corresponding two-dimensional coordinate system. Then, a three-dimensional coordinate system is defined on the basis of the two sets of two-dimensional coordinate systems, and three-dimensional positions of the recorded objects are calculated with respect to the three-dimensional coordinate system on the basis of the two-dimensional positions of the recorded objects on the two-dimensional coordinate systems. Thus, it is possible to produce a survey map of the traffic accident spot by drawing the objects on a sheet of paper in such a manner that the objects are projected on one of the three planes defined by the three-dimensional system.
Before the three-dimensional positions of the recorded objects can be accurately determined, it is necessary to properly and precisely designate a set of conspicuous points, representing each object, on the photographed pictures with respect to the two-dimensional coordinate systems. Thus, for example, although a continuous line, such as a painted lane marking, is photographed, it is impossible to draw the continuous line on the survey map, because the continuous line has no conspicuous points.
Therefore, conventionally, when a continuous line, such as a painted lane marking, must be drawn on a survey map, markers are placed on and along the continuous line at suitable intervals. Of course, when plural continuous lines are drawn on the survey map, the placing of the markers must be carried out with respect to each of the plural continuous line.
SUMMARY OF THE INVENTION
Therefore, an object of the present invention is to provide a photogrammetric analytical measurement system, in which continuous lines, such as painted lane markings, can be drawn on a survey map without requiring the placement of markers on and along each continuous line.
In accordance with an aspect of the present invention, there is provided a photogrammetric measurement system for producing a survey map based on a set of photographed pictures obtained at two different photographing positions. Each of the photographed pictures includes at least one continuous line image and at least three conspicuous point images off the continuous line image, with at least one of the conspicuous point images and remaining conspicuous point images being placed at opposing sides of the continuous line image. The photogrammetric measurement system comprises: a display unit that displays the set of photographed pictures as a first photographed picture and a second photographed picture; a first line-producing system that produces a first set of line images between the conspicuous point images on the first photographed picture such that the first set of line images intersect the continuous line image so as to generate intersecting point images; a second line-producing system that produces a second set of line images between the conspicuous point images on the second photographed picture such that the second set of line images intersect the continuous line image so as to generate intersecting point images; a designating system that designates a set of corresponding intersecting point images on the first and second pictures; an intersection-point-image producing system that produces intersecting points on the survey map based on the designated corresponding intersecting point images; and a drawing system that draws a line, connecting the produced intersecting points, on the survey map.
Preferably, the production of the intersecting points on the survey map is performed by solving collinear equations on the basis of respective two-dimensional positions of the intersecting point images on the first and second pictures.
The photogrammetric measurement system may further comprises a determining system that determines the line to be drawn is one of a curved line and a straight line; and a selecting system that selects a type of the curved line and the straight line that is drawn.
The first line-producing system may be constituted such that the first set of line images is regularly produced between the conspicuous point images in such a manner that a maximum number of the intersecting point images is generated. Similarly, the second line-producing system may be constituted such that the second set of line images is regularly produced between the conspicuous point images in such a manner that a maximum number of the intersecting point images is generated.
In accordance with another aspect of the present invention, there is provided a photogrammetric measurement method of producing a survey map based on a set of photographed pictures obtained at two different photographing positions. Each of the photographed pictures includes at least one continuous line image and at least three conspicuous point images off the continuous line image, with at least one of the conspicuous point images and remaining conspicuous point images being placed at opposing sides of the continuous line image. The photogrammetric measurement method comprises the steps of: displaying the set of photographed pictures as a first photographed picture and a second photographed picture; producing a first set of line images between the conspicuous point images on the first photographed picture such that the first set of line images intersect the continuous line image so as to generate intersecting point images; producing a second set of line images between the conspicuous point images on the second photographed picture such that the second set of line images intersect the continuous line image so as to generate intersecting point images; designating a set of corresponding intersecting point images on the first and second pictures; producing intersecting points on the survey map based on the designated corresponding intersecting point images; and drawing a line, connecting the produced intersecting points, on the survey map.
REFERENCES:
patent: 5361217 (1994-11-01), Makimura et al.
patent: 5642293 (1997-06-01), Manthey et al.
patent: 5699444 (1997-12-01), Palm
patent: 5806020 (1998-09-01), Zykan
patent: 5870490 (1999-02-01), Takahashi et al.
patent: 8233527 (1996-09-01), None
patent: 8214410 (1996-09-01), None
Hara Masato
Kaneko Atsumi
Kida Atsushi
Nakayama Toshihiro
Wakashiro Shigeru
Asahi Kogaku Kogyo Kabushiki Kaisha
Bali Vikkram
Greenblum & Bernstein P.L.C.
Mancuso Joseph
LandOfFree
Photogrammetric analytical measurement system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Photogrammetric analytical measurement system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photogrammetric analytical measurement system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2553751