FRONT CAR RECOGNITION BY RULEBASED VIDEO IMAGE PROCESSING THROUGH WINDSHIELD

A scene image through a windshield contains far more information than conventional sensor data. Image processing, however, is much more difficult than one-dimensional time-series data analysis. This paper assumes a color scene image through a windshield taken by a video camera and applies a rulebased pattern recognition method to identification of front cars. The color image is first transformed into a gray image to shorten processing time. A noise filtering is performed for the gray image, which is, in turn, segmented into tiny regions. These regions are then grouped into a smaller number of larger regions. Labeling is now performed for each region. Procedural and rulebased labeling aspects are briefly discussed. Labeling is performed in the following order: 1) sky and road, 2) road lines and road boundary lines, 3) outside-road portions and additional road portions, 4) central cars, and 5) right or left cars. Rules increase or decrease a score for a particular labeling, depending on features of a region being labeled. Region features include gray or color intensities, centroid, width, height, area, direction, boundary, branching points on boundary, linearity, linear approximation, slenderness, adjacent regions, and adjacent directions. A reasonable labeling is performed for a simple image. A complicated image suggests that the use of additional road information from a map-based navigator would greatly facilitate the front car recognition in the scene.

• Supplemental Notes:
  • Five volumes of papers and one volume of abstracts comprise the published set of conference materials.
• Corporate Authors:

  VERTIS

  TORANOMOM 34 MORI BUILDING 1-25-5
  TORANOMON, MINATOKU, TOKYO 105  Japan 
• Authors:
  • KUMAMOTO, H
  • Sudo, M
  • Tenmoku, K
  • Shimoura, H
• Conference:
  • Steps Forward. Intelligent Transport Systems World Congress
  • Location: Yokohama, Japan
  • Date: 1995-11-9 to 1995-11-11
• Publication Date: 1995-11

Language

• English

Media Info

• Pagination: p. 1029

Subject/Index Terms

• TRT Terms: Administrative procedures; Automatic vehicle identification; Identification systems; Image processing; Intelligent transportation systems; Labeling; Pattern recognition systems; Regions; Vehicle identification numbers
• Geographic Terms: Japan
• Old TRIS Terms: Procedural requirements
• Subject Areas: Highways; Operations and Traffic Management; Vehicles and Equipment; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 00722033
• Record Type: Publication
• Report/Paper Numbers: Volume 3
• Files: TRIS
• Created Date: Jun 23 1996 12:00AM