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Color image diffusion using adaptive bilateral filter.

Jun Xie1, Pheng Ann Heng

  • 1Department of Computer Science & Engineering, Shun Hing Institute of Advanced Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong. jxie@cse.cuhk.edu.hk.

Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference
|February 7, 2007
PubMed
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This study introduces an adaptive bilateral filter for color image diffusion. The novel method enhances noise reduction and edge preservation in images, improving performance in various image processing tasks.

Area of Science:

  • Computer Vision
  • Image Processing
  • Signal Processing

Background:

  • Image data contains uncertainty often perceived as noise, degrading performance in algorithms like segmentation and recognition.
  • Image diffusion techniques smooth noise while preserving essential features, crucial for enhancing image processing tasks.
  • The bilateral filter offers efficient, non-iterative image smoothing but is sensitive to parameter selection, impacting its effectiveness.

Purpose of the Study:

  • To enhance the bilateral filter's capability for color image diffusion.
  • To improve noise reduction and feature preservation in noisy color images.
  • To develop a more robust image diffusion method for various applications.

Main Methods:

  • An adaptive domain spread was introduced into a nonlinear diffusion scheme, extending the bilateral filter.

Related Experiment Videos

  • The CIE-Lab color system was utilized to process color images across three channels simultaneously.
  • The approach focuses on adapting filtering parameters to image content for improved diffusion.

    • Main Results:

    • The proposed adaptive bilateral filter demonstrated superior edge preservation on noisy images compared to the standard bilateral filter.
    • Empirical results validated the method's effectiveness on both natural and medical color images.
    • The technique successfully diffused various color images, maintaining key features while reducing noise.

    Conclusions:

    • The adaptive bilateral filter offers improved performance for color image diffusion, particularly in preserving edges.
    • This method provides a more robust solution for noise reduction in color images.
    • The approach is efficient and suitable for a wide range of color image processing applications.