摘要:
Apparatus is provided for determining the distance of a vehicle from a roadway side marking. An arrangement of light sensitive sensor elements is fitted to the vehicle for optically scanning a portion of the roadway located in front of the vehicle. An evaluation unit, connected downstream of the sensor element arrangement, is also provided. Only one or a few sensor element lines are used as the sensor element arrangement. Each line scans a narrow strip of the roadway which runs in front of the vehicle, not parallel to the vehicle longitudinal axis, and extends laterally as far as the roadway side marking. The evaluation unit reads each sensor element line sequentially and processes the received signals to determine the lateral distance of the vehicle from the roadway marking. The relatively small quantity of data which accumulates permits the processing of the data digitally in real time by a conventional microprocessor. The apparatus is used as sleep warning system or lane guard for motor vehicles.
摘要:
An image processing system for a motor vehicle, includes a camera system, an image processing module having a data interface for receiving image data produced by the camera system, a memory unit for storing an image processing program, an image processor unit for processing the image data, a display unit for displaying the processed image data, and a miniature computer. At least one of the image processor unit and the display unit are disposed in the miniature computer.
摘要:
A camera based position recognition system for a road vehicle. The environment in the direction of travel of the vehicle is acquired by a camera. Using the acquired image data, the position of the vehicle in its environment is determined with regard to an optical signature identified in the obtained image data. For determining the position of the vehicle, use is made of the knowledge of the relationship between the environment coordinate system of the optical signature and that of the camera coordinate system. In simplified manner, position determination occurs with regard to the optical signature on the basis of a template matching imposed on the image data. For this, a template or an optical signature recorded in memory is superimposed on the optical signature identified in the image data in the environment of the vehicle (template matching). From the parameters of this template matching (for example linear compression and rotation parameters) recognizing the existing coordinate system, the position of the vehicle relative to the optical signature can be directly deduced.
摘要:
A device for steering and maintaining the course of a vehicle contains, in addition to a device for detecting the position of the vehicle, and a steering control device which acts on a steering angle adjustment device, a preselectable limitation of the steering angle setting requested by the control. A steering angle setting requested by the control is combined with the steering angle setting requested by the driver, and the steering angle adjustment device sets the steering angle in accordance with this combination.
摘要:
The first commercially-available driver assist systems required a compromise between the resolution of the scanning and the extent of the scanned region, according to application. Conventional video-based systems have a good compromise between resolution and recording range, however do not generally provide direct distance information. According to the new arrangement of the object of the invention, it is possible to achieve a system, which, on installation in a road vehicle, can record complex dynamic scenes, for example the lateral 3D geometry to the road edge from the point of view of the dynamically operating vehicle and use the same to advantage on parking. According to the invention, the monitoring and measuring of the lateral environment of a vehicle is displayed on the one hand by means of a camera with the digital images and on the other hand with a computer unit which serves to provide the images with a time stamp and to buffer the same. The movements of the vehicle are further recorded, in order to select image pairs from the buffered images, based on the above data. A local 3D depth image of the lateral environment of a vehicle can thus be generated by an algorithm for stereo image processing.
摘要:
In a method for detecting and tracking objects by stereo image evaluation a part of structure class images is initially generated from a recorded stereo image pair. Differences in brightness of selected pixels in the environment are determined for each pixel as digital values, which are combined to form a digital value group, with identical groups defining their own structure classes. Structure classes which lack a brightness change along the epipolar line are discarded. Corresponding disparity values are then determined for the pixels in the other structure classes and are collected in a disparity histogram with a given frequency increment. The pixel group that belongs to a given grouping point area of the histogram is then interpreted as an object to be detected.
摘要:
A method for environmental representation, in which two images of an environment (U) are taken respectively and a disparity image is determined by means of stereo image processing. An unobstructed free space (F) is identified in the disparity image, in that each pixel of the disparity image is allocated either to the unobstructed ground surface (B) or to one of several segments (S11 to Snu) depending on disparity values of the respective pixel. Segments (S11 to Snu) of the same width are formed from pixels of the same or similar distance to an image plane. An object (O1 to Ok) located outside of the free space (F) is modelled in the environment (U) using one segment (S11 to Snu) or several segments (S11 to Snu).
摘要:
The invention relates to a vehicle (1) comprising at least one catadioptric camera (2), which is mounted on the vehicle and which has an optical axis (5) and at least one first mirror (6) that is arranged on the optical axis. The optical axis (5) of the camera (2) is slanted relative to a vertical (9).
摘要:
The present invention relates to a method for estimating the course of a lane of a motor vehicle, where the course of the lane is detected by detecting the trajectory of a vehicle traveling in front in the lane, where the detected course of the trajectory subjected to filtering in order to obtain the actual course of the trajectory, where the course of the trajectory is evaluated by means of at least two different filters, where movements of the vehicle in the lateral direction in the lane are filtered on the basis of the output of a filter, and where movements of the vehicle which correspond to a lane change are detected on the basis of the output of a further filter.
摘要:
A monitoring device for a protected area of a machinery installation, the area being accessible through at least one access opening which can be closed off by an element, such as a door, shutter, or the like, which is movable between an open position and a closed position. The monitoring device being arranged adjacent to the movable element and comprising a safety switch having a housing, an evaluation device, a movable element positionable between a closed and an open position, a coded release mechanism located on the movable element, and a read head for reading the coded release mechanism when the movable element is in the closed position. The safety switch being further provided with an actuator bearing a release mechanism, and which, in a locking position in the housing, locks the movable element in its closed position. The housing having a receiving space for the actuator such that the release mechanism is located adjacent to the read head when the actuator is in the locking position in the housing. The actuator being movable in relation to the movable element by coupling to a handle provided on the movable element.