Joint Image Denoising and Disparity Estimation via Stereo Structure PCA and Noise-Tolerant Cost

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

1 Scopus Citations
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  • Qingxiong Yang
  • Shengfeng He
  • Shuhang Gu
  • Lei Zhang

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Original languageEnglish
Pages (from-to)204-222
Journal / PublicationInternational Journal of Computer Vision
Issue number2
Early online date10 May 2017
StatePublished - Sep 2017


Stereo cameras are now commonly available on cars and mobile phones. However, the captured images may suffer from low image quality under noisy conditions, producing inaccurate disparity. In this paper, we aim at jointly restoring a clean image pair and estimating the corresponding disparity. To this end, we propose a new joint framework that iteratively optimizes these two different tasks in a multiscale fashion. First, structure information between the stereo pair is utilized to denoise the images using a non-local means strategy. Second, a new noise-tolerant cost function is proposed for noisy stereo matching. These two terms are integrated into a multiscale framework in which cross-scale information is leveraged to further improve both denoising and stereo matching. Extensive experiments on datasets captured from indoor, outdoor, and low-light conditions show that the proposed method achieves superior performance than the state-of-the-art image denoising and disparity estimation methods. While it outperforms multi-image denoising methods by about 2 dB on average, it achieves a 50% error reduction over radiometric-change-robust stereo matching on the challenging KITTI dataset.

Research Area(s)

  • Disparity estimation, Image denoising, Non-local means, Stereo matching

Citation Format(s)