Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Implementation of Visual Data Compressor for Vision Sensor of Mobile Robot

이동로봇의 시각센서를 위한 동영상 압축기 구현

  • 김형오 (전남대학교 기계공학과 대학원) ;
  • 조경수 (전남대학교 기계공학과 대학원) ;
  • 백문열 (경기공업대 자동차과) ;
  • 기창두 (전남대학교 기계시스템 공학부)
  • Published : 2005.09.01
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Abstract

In recent years, vision sensors are widely used to mobile robot for navigation or exploration. The analog signal transmission of visual data being used in this area, however, has some disadvantages including noise weakness in view of the data storage. A large amount of data also makes it difficult to use this method for a mobile robot. In this paper, a digital data compressing technology based on MPEG4 which substitutes for analog technology is proposed to overcome the disadvantages by using DWT(Discreate Wavelet Transform) instead of DCT(Discreate Cosine Transform). The TI Company's DSP chip, TMS320C6711, is used for the image encoder, and the performance of the proposed method is evaluated by PSNR(Peake Signal to Noise Rates), QP(Quantization Parameter) and bitrate.

Keywords

References

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