Apparatus and method for driver assistance
First Claim
Patent Images
1. A driver assisting apparatus, comprising:
- a top view image output unit that outputs a top view image at a view point at which a surrounding of a vehicle is downwardly watched from a top;
a lane detecting unit that detects a left lane boundary of the vehicle and a right lane boundary of the vehicle from the top view image using a top hat filter;
a speed measuring unit that outputs a speed of the vehicle; and
an integrated control unit that selects and operates one of a parking assisting function and a lane departure warning function in accordance with the speed and in accordance with the left lane boundary of the vehicle and the right lane boundary of the vehicle,wherein the lane detecting unit applies the top hat filter to a grayscale image of the top view image in a horizontal direction and detects a maximum value of a brightness variation on each of a left side and a right side of the grayscale image and considers a portion on each of a left portion and a right portion of the grayscale image where the maximum values are detected as a left feature point and a right feature point of a lane, considers a center portion of the left feature point and the right feature point of the lane as a vehicle center point, searches all directions based on the left feature point and the right feature point to detect a portion which is detected as the lane, and determines an error of an angle formed by the left side and the right side of the lane, and determines a line component as a lane boundary and represents the line component as the lane boundary candidate group based on a center point of the lane when the error of the angle is equal to or smaller than a predetermined value.
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Abstract
A driver assisting apparatus including a top view image output unit that outputs a top view image at a view point at which a surrounding of the vehicle is downwardly watched from a top, a lane detecting unit that detects a left lane boundary of the vehicle and a right lane boundary of the vehicle from the top view image using a top hat filter, a speed measuring unit that outputs a speed of the vehicle, and an integrated control unit that selects and operates one of a parking assisting function and a lane departure warning function in accordance with the speed.
18 Citations
18 Claims
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1. A driver assisting apparatus, comprising:
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a top view image output unit that outputs a top view image at a view point at which a surrounding of a vehicle is downwardly watched from a top; a lane detecting unit that detects a left lane boundary of the vehicle and a right lane boundary of the vehicle from the top view image using a top hat filter; a speed measuring unit that outputs a speed of the vehicle; and an integrated control unit that selects and operates one of a parking assisting function and a lane departure warning function in accordance with the speed and in accordance with the left lane boundary of the vehicle and the right lane boundary of the vehicle, wherein the lane detecting unit applies the top hat filter to a grayscale image of the top view image in a horizontal direction and detects a maximum value of a brightness variation on each of a left side and a right side of the grayscale image and considers a portion on each of a left portion and a right portion of the grayscale image where the maximum values are detected as a left feature point and a right feature point of a lane, considers a center portion of the left feature point and the right feature point of the lane as a vehicle center point, searches all directions based on the left feature point and the right feature point to detect a portion which is detected as the lane, and determines an error of an angle formed by the left side and the right side of the lane, and determines a line component as a lane boundary and represents the line component as the lane boundary candidate group based on a center point of the lane when the error of the angle is equal to or smaller than a predetermined value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A driver assisting method, comprising:
- capturing images at a surrounding of a vehicle to output a top view image;
converting the top view image into a grayscale image;
detecting a left lane and a right lane of the vehicle from the grayscale image using a top hat filter;
detecting an interval between a boundary of the left lane and a boundary of the right lane to determine an effectiveness of a lane component;
measuring a speed of the vehicle; and
selecting and operating one of a parking assisting function and a lane departure warning function in accordance with the measured speed and in accordance with the left lane boundary of the vehicle and the right lane boundary of the vehicle,wherein in detecting the left lane and the right lane further comprises applying the top hat filter to the grayscale image to detect a maximum value of a brightness variation on each of a left side and a right side of the grayscale image, considering a portion on each of a left side and a right side of the grayscale image where the maximum values are detected as a left feature point and a right feature point of a lane, considering a center portion of the left feature point and the right feature point of the lane as a vehicle center point, searching all directions based on the left feature point and the right feature point to detect a portion which is detected as the lane, and determining an error of an angle formed by the left side and the right side of the lane and, determining a line component as a lane boundary and represents the line component as the lane boundary candidate group based on a center point of the lane when the error of the angle is equal to or smaller than a predetermined value. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
- capturing images at a surrounding of a vehicle to output a top view image;
Specification