Object detecting apparatus and object detecting method
First Claim
1. An object detecting apparatus for detecting an object on the basis of target information acquired by a radar and target information acquired from an image picked up by a monocular image sensor, the image being called a monocular image detection edge, the object detecting apparatus comprising:
- an edge acquiring unit configured to extract a target corresponding to a target recognized by the radar, from the image picked up by the monocular image sensor and to acquirea set of left edges by acquiring a left edge of the extracted target every time a predetermined period of time elapses; and
a set of right edges by acquiring a right edge of the extracted target every time the predetermined period of time elapses; and
a locus approximation line deriving unit configured to derive;
for the set of left edges, a left edge locus approximation line as a straight line or predetermined curved line for approximating loci of the set of the left edges acquired by the edge acquiring unit every time the predetermined period of time elapses; and
for the set of right edges, a right edge locus approximation line as a straight line or predetermined curved line for approximating loci of the set of the right edges acquired by the edge acquiring unit every time the predetermined period of time elapses; and
a selecting unit configured to select a true edge of the target;
a lateral position deriving unit configured to derive a lateral position of the target on the basis of a position of the true edge by the selecting unit;
wherein;
the true edge of the target is selected as either(1) a true left edge of the target in the event that a greater number of acquired left edges appear on the left edge locus approximation line than the number of acquired right edges that appear on the right edge locus approximation line;
or(2) a true right edge of the target in the event that a greater number of acquired right edges appear on the right edge locus approximation line than the number of acquired left edges that appear on the left edge locus approximation line.
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Abstract
An object of the present invention is to further improve the detection accuracy of a lateral position of a target in an object detecting apparatus for detecting an object by using a radar and a monocular image sensor. In the present invention, a target corresponding to a target recognized by the radar is extracted and a right edge and a left edge of the target are acquired from an image picked up by the monocular image sensor. Further, locus approximation lines, which are straight lines or predetermined curved lines for approximating loci of the right edge and the left edge, are derived for the both edges. The edge, which has a larger number of edges existing on the locus approximation line, is selected as a true edge of the target from the right edge and the left edge. The lateral position of the target is derived on the basis of the position of the selected edge.
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Citations
8 Claims
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1. An object detecting apparatus for detecting an object on the basis of target information acquired by a radar and target information acquired from an image picked up by a monocular image sensor, the image being called a monocular image detection edge, the object detecting apparatus comprising:
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an edge acquiring unit configured to extract a target corresponding to a target recognized by the radar, from the image picked up by the monocular image sensor and to acquire a set of left edges by acquiring a left edge of the extracted target every time a predetermined period of time elapses; and a set of right edges by acquiring a right edge of the extracted target every time the predetermined period of time elapses; and a locus approximation line deriving unit configured to derive; for the set of left edges, a left edge locus approximation line as a straight line or predetermined curved line for approximating loci of the set of the left edges acquired by the edge acquiring unit every time the predetermined period of time elapses; and for the set of right edges, a right edge locus approximation line as a straight line or predetermined curved line for approximating loci of the set of the right edges acquired by the edge acquiring unit every time the predetermined period of time elapses; and a selecting unit configured to select a true edge of the target; a lateral position deriving unit configured to derive a lateral position of the target on the basis of a position of the true edge by the selecting unit; wherein; the true edge of the target is selected as either (1) a true left edge of the target in the event that a greater number of acquired left edges appear on the left edge locus approximation line than the number of acquired right edges that appear on the right edge locus approximation line;
or(2) a true right edge of the target in the event that a greater number of acquired right edges appear on the right edge locus approximation line than the number of acquired left edges that appear on the left edge locus approximation line. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An object detecting method for detecting an object on the basis of target information acquired by a radar and target information acquired from an image picked up by a monocular image sensor, the image being called a monocular image detection edge, the object detecting method executed by an electronic control unit and comprising:
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an edge acquiring step of extracting a target corresponding to a target recognized by the radar, from the image picked up by the monocular image sensor and acquiring; a set of left edges by acquiring a left edge of the extracted target every time a predetermined period of time elapses; and a set of right edges by acquiring a right edge of the extracted target every time the predetermined period of time elapses; and a locus approximation line deriving step of deriving; for the set of left edges, a left edge locus approximation line as a straight line or predetermined curved line for approximating loci of the set of the left edges acquired in the edge acquiring step every time a predetermined period of time elapses; and for the set of right edges, a right edge locus approximation line as a straight line or predetermined curved line for approximating loci of the set of the right edges acquired by the edge acquiring unit every time the predetermined period of time elapses; and a selecting step of selecting a true edge of the target; and a lateral position deriving step of deriving a lateral position of the target on the basis of a position of the true edge selected in the selecting step; wherein; the true edge of the target is selected as either; (1) a true left edge of the target in the event that a greater number of acquired left edges appear on the left edge locus approximation line than the number of acquired right edges that appear on the right edge locus approximation line;
or(2) a true right edge of the target in the event that a greater number of acquired right edges appear on the right edge locus approximation line than the number of acquired left edges that appear on the left edge locus approximation line. - View Dependent Claims (8)
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Specification