Color Correction Parameter Estimation on the Smartphone and Its Application for Automatic Tongue Diagnosis

Abstract

Background: An automatic tongue diagnosis framework is proposed to analyze tongue images taken by smartphones. Different from conventional tongue diagnosis systems, our input tongue images are usually in low resolution and taken under unknown lighting conditions. Consequently, existing tongue diagnosis methods cannot be directly applied to give accurate results. Materials and Methods: We propose a lighting condition estimation method based on using the SVM (support vector machine) classifier to predict the color correction matrix according to the color difference of images taken with and without flash. We also modify the state-of-the-art work of fur and fissure detection for tongue images by taking hue information into consideration and adding a denoising step. Results: Our method is able to correct the color of tongue images under different lighting conditions (e.g. fluorescent, incandescent, and halogen illuminant) and provide a better accuracy and a faster speed in tongue features detection than the prior work. Conclusions: In this work, we proposed an automatic tongue diagnosis framework which can be applied to smartphones. Unlike the prior work which can only work in a controlled environment, our system can adapt to different lighting conditions by employing a novel color correction parameter estimation scheme.

Citation

Kun-Chan Lan, Ming-Hsun Cheng, Min-Chun Hu, "Color Correction Parameter Estimation on the Smartphone and Its Application for Automatic Tongue Diagnosis" Journal of Medical Systems, 2015.(IF=2.213)

Bitex

@ARTICLE{lan2015: ,
AUTHOR = {Kun-Chan Lan, Ming-Hsun Cheng, Min-Chun Hu},
TITLE = {Color Correction Parameter Estimation on the Smartphone and Its Application for Automatic Tongue Diagnosis},
BOOKTITLE = {Journal of Medical Systems},
YEAR = {2015}
}

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