122 results about "Lane departure warning system" patented technology

A vehicular imaging and display system includes a rear backup camera at a rear portion of a vehicle, a video processor for processing image data captured by the rear camera, and a video display screen responsive to the video processor to display video images. During a reversing maneuver of the equipped vehicle, the video display screen displays video images captured by the rear camera. During forward travel of the equipped vehicle, the video display screen is operable to display images representative of a portion of the field of view of the rear camera to display images representative of an area sideward of the equipped vehicle responsive to at least one of (a) actuation of a turn signal indicator of the vehicle, (b) detection of a vehicle in a side lane adjacent to the equipped vehicle and (c) a lane departure warning system of the vehicle.

A method in a computerized system including an image sensor mounted in a moving vehicle. The image sensor captures image frames consecutively in real time. In one of the image flames, a spot is detected of measurable brightness; the spot is matched in subsequent image frames. The image frames are available for sharing between the computerized system and another vehicle control system. The spot and the corresponding spot are images of the same object. The object is typically one or more of headlights from an oncoming vehicle, taillights of a leading vehicle, streetlights, street signs and / or traffic signs. Data is acquired from the spot and from the corresponding spot. By processing the data, the object (or spot) is classified. producing an object classification. The vehicle control system controls preferably headlights of the moving vehicle based on the object classification. The other vehicle control system using the image frames is one or more of: lane departure warning system, collision warning system and / or ego-motion estimation system.

A method in a computerized system including an image sensor mounted in a moving vehicle. The image sensor captures image frames consecutively in real time. In one of the image flames, a spot is detected of measurable brightness; the spot is matched in subsequent image frames. The image frames are available for sharing between the computerized system and another vehicle control system. The spot and the corresponding spot are images of the same object. The object is typically one or more of headlights from an oncoming vehicle, taillights of a leading vehicle, streetlights, street signs and / or traffic signs. Data is acquired from the spot and from the corresponding spot. By processing the data, the object (or spot) is classified. producing an object classification. The vehicle control system controls preferably headlights of the moving vehicle based on the object classification. The other vehicle control system using the image frames is one or more of: lane departure warning system, collision warning system and / or ego-motion estimation system.

A vehicular imaging and display system includes a rear backup camera at a rear portion of a vehicle, a video processor for processing image data captured by the rear camera, and a video display screen responsive to the video processor to display video images. During a reversing maneuver of the equipped vehicle, the video display screen displays video images captured by the rear camera. During forward travel of the equipped vehicle, the video display screen is operable to display images representative of a portion of the field of view of the rear camera to display images representative of an area sideward of the equipped vehicle responsive to at least one of (a) actuation of a turn signal indicator of the vehicle, (b) detection of a vehicle in a side lane adjacent to the equipped vehicle and (c) a lane departure warning system of the vehicle.

A selectable lane departure detection system (10) adapted for use by an operator, and with a vehicle (12) traveling upon a thoroughfare having lane-markings (16), and including at least one vehicle condition sensor (22 through 28), a tracking sensor (20) or differential global positioning system (38) configured to determine the location and configuration of the lane-markings (16), and a controller (32) communicatively coupled to the sensors (20 through 28), and configured to determine a spatial relationship between the vehicle (12) and lane-markings (16), determine a sporty driving maneuver by or preference of the operator, modify a predefined warning threshold when so determined, compare the relationship to the adjusted threshold, and issue a warning when the relationship does not exceed the threshold.

The present invention relates to a lane departure warning system and method, which use a virtual lane-dividing line generated using lane width information that is calculated using previously detected lane-dividing lines even when it is difficult to detect a lane-dividing line according to the weather, illuminance, road surface conditions, etc. present during travel of a vehicle, thus allowing a lane departure warning to be provided to a driver on the basis of the virtual lane-dividing line.

A lane departure warning system has a trailer detector for detecting that a trailer is attached to a vehicle, a lane boundary detector for detecting a position of a lane boundary on a roadway over which the vehicle is travelling, and an information processor including a calibrator for generating calibration parameters used in determining an unintended lane departure event with respect to the lane boundary. The information processor initiates a process for allowing an operator to provide trailer width information when the trailer detector indicates that the vehicle is towing a trailer. The lane departure warning system also includes a sensor for detecting a hitch angle between the vehicle and the trailer. A controller determines a lateral offset of the trailer relative to the vehicle based on the hitch angle and a length of the trailer for generating a warning signal when the lateral offset crosses the lane boundary.

A lane change assist and / or lane departure warning system adapted for use with a vehicle having a module engaged by an operator, wherein the vehicle travels within a lane, and the system includes a steering wheel sensor, at least one sensor operable to detect a lane-marking or an approaching object in adjacent lanes in the direction of host vehicle travel, a warning device including an active material element engaged with the module, and a controller communicatively coupled to the sensor and device and configured to determine a spatial relationship between the vehicle and the lane-marking or approaching object in the direction of host vehicle travel, compare the relationship to a threshold, transmit an activation signal to the element when the relationship exceeds the threshold or when an object is detected and the wheel sensor indicates a turn towards the object, and generate an alert by activating the element.

There is provided a lane departure warning apparatus capable of preventing false warnings and absence of a warning regarding lane departure which is attributed to special road geometries such as junctions and tollgates. The lane departure warning apparatus for outputting a warning signal upon determining departure of a vehicle from a lane, performing the steps of: when one dividing line in a vehicle width direction of the vehicle is non-detected, estimating a position of the one dividing line based on a position of the other dividing line as a first estimation dividing line; estimating a position of the non-detected one dividing line based on a position of the one dividing line prior to non-detection as a second estimation dividing line; and comparing the first estimation dividing line with the second estimation dividing line to determine lane departure.

The invention relates to a testing device and a testing method of a lane departure warning system. The testing device is characterized by comprising image sensors, an image acquisition unit, a vehicle-mounted CAN (Controller Area Network) unit and a data processing unit, wherein the image sensors are fixed at both sides above a vehicle and used for acquiring images of the road surface, wherein the plane that the image sensors are located are parallel to the road surface; the image acquisition unit is used for converting the road surface image information acquired by the image sensors into digital information; the vehicle-mounted CAN unit provides vehicle speed information in original vehicle information and warning time information provided by the lane departure warning system to be tested; and the data processing unit is used for working out the distance from one point on the vehicle body to the lane line and the off-line speed at the warning time under a world coordinate system according to the lane-line containing road surface information acquired by the image acquisition unit by combining the vehicle speed and the warning time information provided by the vehicle-mounted CAN unit. The invention has low cost and high authenticity degree of a tested evaluating result and is suitable for testing various lane departure warning systems.

A lane change assist and / or lane departure warning system adapted for use with a vehicle having a module engaged by an operator, wherein the vehicle travels within a lane, and the system includes a steering wheel sensor, at least one sensor operable to detect a lane-marking or an approaching object in adjacent lanes in the direction of host vehicle travel, a warning device including an active material element engaged with the module, and a controller communicatively coupled to the sensor and device and configured to determine a spatial relationship between the vehicle and the lane-marking or approaching object in the direction of host vehicle travel, compare the relationship to a threshold, transmit an activation signal to the element when the relationship exceeds the threshold or when an object is detected and the wheel sensor indicates a turn towards the object, and generate an alert by activating the element.

A vehicle lane departure warning system and method are provided. The system includes a position sensor for sensing position of a vehicle and memory storing learned vehicle path data. The system further includes a controller for processing the position data and determining a stored learned vehicle path that the vehicle is travelling on. The controller comprises logic for comparing the sensed position data to the stored learned vehicle path and determining if the vehicle is sufficiently departing from the stored learn vehicle path. The system further includes an output for providing a warning signal indicative of the vehicle departing from the stored learned vehicle path. The stored learned vehicle path is updated as the vehicle repeatedly travels on the path.

The present invention relates to a lane departure warning device or the like that limits a lane departure warning in a special road environment, in a case where it is confirmed that a driver has a lane departure intention, and so on. It is possible to secure the reliability of a lane departure warning system and to provide a driver's convenience by limiting the lane departure warning in the case where the vehicle enters into a special road region, such as a road junction / branch region by comprehensively considering information captured by a camera of the vehicle, navigation map information, and so on while using a general lane departure warning, and also limiting the lane departure warning even in the case where the driver's lane departure intention is confirmed.

A vehicle lane departure warning system and method are provided having a trailer mode. The system includes an imager capturing images of a roadway forward of a vehicle and an input receiving a towing signal indicative of whether the vehicle is towing a trailer. The system also includes a processor for processing the captured images and determining whether the vehicle or trailer is expected to be departing from a lane on the roadway based on the captured images and a threshold width value. The processor selects the threshold width value based on the input towing signal such that an enhanced threshold width value is employed when the vehicle is towing a trailer. An output is provided for outputting a lane departure warning signal based on the processed images and selected threshold width value.

A lane departure warning system for a vehicle includes a positional input device and a seat having an inflatable bladder therein and a vibrational unit coupled with the bladder. A controller is communicatively coupled with the positional input device and with the vibrational unit and includes electronic circuitry programmed to detect a lane departure based on a signal from the positional input device and to cause the vibrational unit to vibrate in response thereto.

A lane departure warning system and method. The lane departure warning system includes an image sensing unit, an edge extracting unit, a lane recognizing unit, a lane type determining unit, a lane color detecting unit, a lane pattern generating unit, and a lane departure determining unit. The image sensing unit senses a plurality of images. The edge extracting unit emphasizes edge components necessary for lane recognition. The lane recognizing unit detects straight-line components. The lane type determining unit determines a type of the lane. The lane color detecting unit detects a color of the lane from an image signal value. The lane pattern generating unit generates a lane pattern. The lane departure determining unit determines lane departure in consideration of the type and the color of the lane and a state of a turn signal lamp.

An inspection device for vehicle driver assistance systems (DASs) mounted on a vehicle may include: i) a frame unit including pillar frames, where vehicles forwardly enter and backwardly exit, at respective corners of a base frame, and an upper frame is coupled to upper end portions of the pillar frames; a correction unit installed at the upper frame such that it is movable in multi-axis directions so as to correct a camera measurement point of a lane departure warning system (LDWS) at a front side of the vehicle and configured to display a correction target with respect to the camera as an image; and an inspection unit installed at the upper frame such that it is movable in multi-axis directions so as to check a normal operation of the LDWS and configured to display a driving lane as an image.

The invention relates to a lane departure warning system and a method based on a monocular camera. The system comprises an image collection module, a processor, a vehicle body interaction module, a violation image storage module, a display, a warning device, a synchronous dynamic random access memory (SDRAM) and a power supply module. The system is used for collecting the information of a road and vehicle bodies in a real-time manner, when the system detects that a vehicle has a tendency to deviate from the lane, the early warning system gives out a warning voice signal and a visual signal to remind a driver to timely correct the deviation of the vehicle, and at the same time, when the system judges that the driver performs a violation operation, the system records violation information in the violation image storage module. The method comprises an express lane filtering algorithm and a candidate lane scoring method for overcoming the defects that the real time performance is poor, the method is liable to be interrupted by environment of multiple lanes, railings on two sides of the lanes, and the like when a Hough algorithm is used for detecting the lines of the lanes; according to the detected parameters of the lane lines and the information of the vehicle bodies, the system can judge whether the vehicle deviates from the lane and whether the driver has the violation operation.

The invention discloses a multi-lane line tracking method based on a Kalman filer bank, which belongs to the technical field of processing of digital images. The method comprises the following steps of: outputting the optimal estimation value of a lane line by using a Kalman filter model on the basis of performing lane line detection on an acquired vehicle front road image by establishing the Kalman filter model tracked by the lane line; and when the same lane line is detected through continuous 25 road images, determining that the optimal estimation of a Kalman filter is effective, and using the optimal estimation value output by the Kalman filter as a detection result. By the method, the detection result of the lane line in a lane departure warning system is more stable, so that the phenomena of inaccurate lane line detection or detection omission caused by vehicle body vibration, illumination variation, road surface damages and the like are greatly reduced; and according to set quantity of filters, a corresponding lane line number can be tracked simultaneously, a region of interest (ROI) of the lane line can be relatively unitarily tracked, and the detection accuracy and the disturbance resistance of the lane line are greatly improved.

The invention discloses an active safety information collecting method and an information service system for an automobile. The information service system for the automobile has functions of prompting the active safety information to prevent an accident from occurring, and modifying and updating a GPS (global position system) navigation chart. The active safety information collecting method comprises the steps that the automobile provided with a lane departure warning system, a front anti-collision warning system and a pedestrian detection and anti-collision warning system sends warning information, and the speed of the automobile and GPS positioning information in the warming process to a remote service platform through a wireless communication network; and the remote service platform conducts data processing, stores a calculated result and road section information in a database, downloads a planned route and occurrence probabilities of warning accidents in all road sections to an on-board client through the wireless communication network, and prompts safety driving before the automobile enters the road sections.

A lane departure warning system and method are provided. The lane departure warning system includes a camera, a tunnel recognition module, a virtual lane module, and a determination / warning module. The camera captures a front image of a vehicle. The tunnel recognition module determines whether a current position of the vehicle is in a tunnel section, using the front image captured by the camera. The virtual lane module determines whether two or more lanes are detected from the front image when the current position is in the tunnel section and, when only one lane is detected, generates a virtual lane at a position corresponding to the one lane using a pre-calculated road width. The determination / warning module determines whether the vehicle departs from a lane, using the one lane and the virtual lane or the two or more lanes detected, and warns of lane departures accordingly.

A lane departure warning system (LDWS) installed on vehicles is revealed. The LDWS includes a camera that captures road images and the data of images is sent to an electronic control unit (ECU) for processing and recognition. The ECU is directly connected with a global positioning system (GPS) that provides vehicle speed signals so as to check whether dangerous driving occurs. Once the dangerous driving occurs, a warning unit is turned on to send an alert. The conventional LDWS that complicatedly connects with vehicles parts such as turn signal lights or speedometers is replaced by connection with a GPS. Thus the convenience of installation of LDWS in vehicles is improved.

A lane departure warning system has a trailer detector for detecting that a trailer is attached to a vehicle, a lane boundary detector for detecting a position of a lane boundary on a roadway over which the vehicle is travelling, and an information processor including a calibrator for generating calibration parameters used in determining an unintended lane departure event with respect to the lane boundary. The information processor initiates a process for allowing an operator to provide trailer width information when the trailer detector indicates that the vehicle is towing a trailer. The lane departure warning system also includes a sensor for detecting a hitch angle between the vehicle and the trailer. A controller determines a lateral offset of the trailer relative to the vehicle based on the hitch angle and a length of the trailer for generating a warning signal when the lateral offset crosses the lane boundary.

The invention discloses a lane departure warning method based on Hough transform. The method comprises the steps of carrying out region of interest segmentation on an image; graying region of interestimages; carrying out edge detection on the grayed images through utilization of an improved unidirectional gradient operator, thereby obtaining edge images; carrying out binarization processing on the images through utilization of an otsu algorithm; obtaining a candidate straight line set through Hough transform, dividing the candidate straight line set into a left lane straight line set and a right lane straight line set according to slopes, screening the two straight line sets through combination of vanishing point constraint and a random sample consistency algorithm, thereby obtaining optimum left and right lane line parameters; establishing two Kalman filters to track left and right optimum lane lines; and estimating relative lateral offset and a change trend through utilization of the left and right lane line slopes, identifying lane departure and carrying out warning. According to the method, the lane departure problem in driving can be effectively identified, and the robustnessand timeliness of the a lane departure warning system are improved.