基于颜色描述符和离散小波变换的图像检索。
Content Based Image Retrieval by Using Color Descriptor and Discrete Wavelet Transform.
机构信息
Department of Computer Science, National Textile University, Faisalabad, Pakistan.
Department of Computer Engineering, Bahria University, Islamabad, Pakistan.
出版信息
J Med Syst. 2018 Jan 25;42(3):44. doi: 10.1007/s10916-017-0880-7.
Due to recent development in technology, the complexity of multimedia is significantly increased and the retrieval of similar multimedia content is a open research problem. Content-Based Image Retrieval (CBIR) is a process that provides a framework for image search and low-level visual features are commonly used to retrieve the images from the image database. The basic requirement in any image retrieval process is to sort the images with a close similarity in term of visually appearance. The color, shape and texture are the examples of low-level image features. The feature plays a significant role in image processing. The powerful representation of an image is known as feature vector and feature extraction techniques are applied to get features that will be useful in classifying and recognition of images. As features define the behavior of an image, they show its place in terms of storage taken, efficiency in classification and obviously in time consumption also. In this paper, we are going to discuss various types of features, feature extraction techniques and explaining in what scenario, which features extraction technique will be better. The effectiveness of the CBIR approach is fundamentally based on feature extraction. In image processing errands like object recognition and image retrieval feature descriptor is an immense among the most essential step. The main idea of CBIR is that it can search related images to an image passed as query from a dataset got by using distance metrics. The proposed method is explained for image retrieval constructed on YCbCr color with canny edge histogram and discrete wavelet transform. The combination of edge of histogram and discrete wavelet transform increase the performance of image retrieval framework for content based search. The execution of different wavelets is additionally contrasted with discover the suitability of specific wavelet work for image retrieval. The proposed algorithm is prepared and tried to implement for Wang image database. For Image Retrieval Purpose, Artificial Neural Networks (ANN) is used and applied on standard dataset in CBIR domain. The execution of the recommended descriptors is assessed by computing both Precision and Recall values and compared with different other proposed methods with demonstrate the predominance of our method. The efficiency and effectiveness of the proposed approach outperforms the existing research in term of average precision and recall values.
由于最近技术的发展,多媒体的复杂性显著增加,相似多媒体内容的检索是一个开放的研究问题。基于内容的图像检索(CBIR)是一种提供图像搜索框架的过程,通常使用低级视觉特征从图像数据库中检索图像。任何图像检索过程的基本要求都是根据视觉外观的相似性对图像进行排序。颜色、形状和纹理是低级图像特征的示例。特征在图像处理中起着重要作用。图像的强大表示形式称为特征向量,应用特征提取技术来获取将有助于图像分类和识别的特征。由于特征定义了图像的行为,它们显示了图像在存储位置、分类效率以及显然的时间消耗方面的位置。在本文中,我们将讨论各种类型的特征、特征提取技术,并解释在什么情况下,哪种特征提取技术会更好。CBIR 方法的有效性主要基于特征提取。在图像处理任务中,例如目标识别和图像检索,特征描述符是最重要的步骤之一。CBIR 的主要思想是,它可以使用距离度量从数据集搜索与作为查询传递的图像相关的相关图像。所提出的方法是基于 YCbCr 颜色的图像检索的解释,具有 Canny 边缘直方图和离散小波变换。直方图边缘和离散小波变换的组合增加了基于内容搜索的图像检索框架的性能。还对比了不同小波的执行情况,以发现特定小波工作对图像检索的适用性。该算法已准备好并尝试在 Wang 图像数据库上实现。出于图像检索目的,人工神经网络(ANN)用于 CBIR 领域的标准数据集,并应用于该标准数据集。通过计算精度和召回值来评估所提出描述符的执行情况,并与其他不同的方法进行比较,以证明我们方法的优势。所提出的方法在平均精度和召回值方面优于现有研究,具有更高的效率和有效性。