论文标题
与颜色相关的本地二进制图案:用于颜色图像识别的博学的本地描述符
Color-related Local Binary Pattern: A Learned Local Descriptor for Color Image Recognition
论文作者
论文摘要
局部二进制模式(LBP)作为一种本地功能显示了其简单性,易于实现和图像识别的强大歧视能力。尽管某些LBP变体是针对颜色图像识别的,但未充分考虑图像的颜色信息,并且在这些方法中很容易引起分类中维度的诅咒。在本文中,提出了一种与颜色相关的本地二进制图案(CLBP),该图案从解码的LBP中学习了主要图像,以供颜色图像识别。本文首先提出了一个相对相似性空间(RSS),该空间表示描述颜色图像的图像通道之间的颜色相似性。然后,使用LBP特征图之间的相关信息对应于RSS传统RGB空间的每个颜色通道对应的解码LBP,用于提取特征。最后,采用特征学习策略来学习与颜色相关的主要模式,以降低特征向量的维度并进一步改善特征的区分。理论分析表明,与传统的RGB空间相比,提出的RSS可以提供更多的判别性信息,并且具有更高的噪声鲁棒性以及更高的照明变化鲁棒性。在四个组上的实验结果,完全十二个公共颜色图像数据集表明,根据特征的维度,无噪声,嘈杂和照明变化条件下的识别精度,所提出的方法优于彩色图像识别的大多数LBP变体。
Local binary pattern (LBP) as a kind of local feature has shown its simplicity, easy implementation and strong discriminating power in image recognition. Although some LBP variants are specifically investigated for color image recognition, the color information of images is not adequately considered and the curse of dimensionality in classification is easily caused in these methods. In this paper, a color-related local binary pattern (cLBP) which learns the dominant patterns from the decoded LBP is proposed for color images recognition. This paper first proposes a relative similarity space (RSS) that represents the color similarity between image channels for describing a color image. Then, the decoded LBP which can mine the correlation information between the LBP feature maps correspond to each color channel of RSS traditional RGB spaces, is employed for feature extraction. Finally, a feature learning strategy is employed to learn the dominant color-related patterns for reducing the dimension of feature vector and further improving the discriminatively of features. The theoretic analysis show that the proposed RSS can provide more discriminative information, and has higher noise robustness as well as higher illumination variation robustness than traditional RGB space. Experimental results on four groups, totally twelve public color image datasets show that the proposed method outperforms most of the LBP variants for color image recognition in terms of dimension of features, recognition accuracy under noise-free, noisy and illumination variation conditions.