Object Verification for ADAS & HAD with CANape Option Driver Assistance

Driver assistance systems and systems for highly automated driving (HAD) acquire information about the vehicle’s environment via a wide variety of sensors such as video, radar, LIDAR, etc. Warnings to the driver or (semi-) autonomous interventions in the driving situation are made based on the results of object detection, such as the distance to the vehicle driving ahead. During the drive, measurement results are indeed available, but it is not so easy to verify them. Option Driver Assistance serves precisely this purpose. It enables the display of sensor data in the form of graphic elements such as rectangles and lines, or as point clouds. In CANape, the option may be used either during the measurement or for later evaluation of the measured data.

Functions

The GFX Editor offers the convenience of associating detected sensor data (vehicles, road markings, traffic signs, etc.) with graphic elements (polygons for driving lane detection and rectangles for vehicle identification), which are displayed as overlays in the Video and GPS window. In addition, a user-scalable view is available in the Multimedia window. This window, known as the “Grafx” window, shows the objects from a user-configurable bird’s eye perspective.

In addition, image processing algorithms can be linked in the form of DLLs in CANape. Video inputs and outputs are gated via CANape. The results of the algorithm are visualized in CANape. This lets you optimize algorithm parameters like with an ECU in online operation.

Display & Evaluation

Object data, which are either acquired as measured signals or exist as signals in measurement files, are shown as graphic elements and are superimposed on other information:

• Perspective views and time-synchronous display of the evaluated object information in the video image
• Continuously adjustable object display (from side view to bird’s eye view) with variable grid size (X, Y, Z elongation)
• To achieve an optimum display during the measurement or measured data evaluation, objects can simply be selected by numeric input (e.g. object numbers 1-5, 6, 8-10) or by preconfigured groups
• Objects, texts, and parameter values can be drawn as supplemental information at fixed or variable pixel positions
• Relative speed and lateral deviation can be displayed as horizontal and vertical excursion lines
• Text and numeric information on the object can be shown in the display
• Any desired zoom level in the Grafx window lets you display precisely that section that you need for your application
• For easy checking of intervals and angles, they can be continuously calculated during the measurement and shown in the Grafx window
• Subsequent adjustment of all object parameters (size, color, text and numeric fields, etc.) for measurement data evaluation
• Measured data of the LIDAR sensors (e.g. Velodyne, Ibeo and Quanergy) are visualized in the Scene window which displays the received point cloud objects in 3D. A range of views and rotation and zoom mechanisms are available to permit optimum analysis.

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