| 引用本文: | 陈宁,黄璐,桂卫华,阳春华.泡沫图像统计建模与恒常颜色校正算法研究[J].控制理论与应用,2016,33(5):613~620.[点击复制] |
| CHEN Ning,HUANG Lu,GUI Wei-hua,YANG Chun-hua.The statistical modeling and constant color correction algorithms for froth image[J].Control Theory and Technology,2016,33(5):613~620.[点击复制] |
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| 泡沫图像统计建模与恒常颜色校正算法研究 |
| The statistical modeling and constant color correction algorithms for froth image |
| 摘要点击 2359 全文点击 968 投稿时间：2015-09-29 修订日期：2015-11-19 |
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| DOI编号 10.7641/CTA.2016.50783 |
| 2016,33(5):613-620 |
| 中文关键词 泡沫浮选 颜色恒常性 Contourlet变换 图像建模 颜色校正 |
| 英文关键词 froth flotation color constancy contourlet transform image modeling color correction |
| 基金项目 国家自然科学基金创新研究群体科学基金(61321003), 国家自然科学基金重大项目(61290325), 国家自然科学基金(61025015)资助. |
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| 中文摘要 |
| 由于浮选现场的恶劣环境和复杂光照等问题, 将导致采集到的泡沫图像不可避免地发生色偏. 为了消除以
上不利影响, 提高后续颜色特征提取的准确性, 本文提出了一种基于图像统计建模的泡沫图像恒常颜色校正算法.
首先, 通过对泡沫图像统计特性的分析, 利用Contourlet变换和广义高斯分布函数对图像进行统计建模. 其次, 选取
颜色恒常性标准图像库(Gray-ball)中已知真实光照的标准图像作为训练样本, 建立其统计模型参数集, 分别选用常
用的5种颜色恒常性算法对其进行颜色校正, 并以最小角度误差为每幅标准图像标记最佳颜色恒常性算法. 最后,
利用K最近邻分类算法将待校正的泡沫图像分至对应的恒常算法中, 该算法即为原始泡沫图像的最佳恒常颜色校
正算法. 实验结果证明, 该算法能够获得较好的颜色校正效果. |
| 英文摘要 |
| Due to the bad environment and the complex illumination of the flotation scene, the froth image always
suffers serious noise and color cast. In order to eliminate the above adverse effects and improve the veracity of color
feature extraction, color correction algorithms for froth image is proposed based on image statistical modeling theory in
this paper. At first, through the analysis of the statistical characteristics of froth image, Contourlet transform and generalized
Gaussian distribution are used to build statistical model of image. Next, pictures with known real light in standard picture
library of color constancy (Gray-ball) are chose as the training samples and their statistical parameters are calculated to
compose a statistical model parameter set. Five common color constancy algorithms are selected to do color correction
and the minimum angle error is used to mark the best color constancy algorithm of each picture. In the end, the best color
constancy algorithm of original froth image is achieved by K–NN (K–nearest neighbor classification). The experimental
results shows that the algorithm can obtain a good color correction effect for froth image. |
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