Compression storage of images with an effective annular zone

  • Authors:

  • Huiwen Leng;Chunguang Xu;Dingguo Xiao;Huiwen Leng;Dongxing Wang

  • Affiliations:

  • School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing, P.R. China;School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing, P.R. China;School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing, P.R. China;School of Mechatronics & Automobile Engineering, Yantai University, Yantai, P.R. China;School of Mechatronics & Automobile Engineering, Yantai University, Yantai, P.R. China

  • Venue:
  • IITA'09 Proceedings of the 3rd international conference on Intelligent information technology application
  • Year:
  • 2009

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Abstract

In 3D measurement of complex deep-hole inner profile with ring-structured-light, the effective area of the original images is an annular zone, only a small portion of the whole. A new image compression storage method has been proposed, where only the image information of the effective annular zone, denoted by T, is stored. The method consists of the following procedures. Find the center and the inner/outer radii of T, decompose T into a series of concentric circles of one pixel wide, arrange the intensity data of all pixels on each concentric circle according to a definite order, compress the data sequence to make the image file shorter. Experiments show that this method has a large compression ratio. Much storage space can be effectively saved when there is a great number of such images should be stored.