基于颜色和边缘方向的图像检索方法
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Image Retrieval Method Based on Color and Edge Orientation
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    摘要:

    提出了一种新的图像特征表示方法,首先提取图像的底层颜色信息获取颜色特征值 ,通过对图像中物体的边缘检测计算像素点的边缘方向角度值,并对颜色特征值和边缘方向 角度值进行量化。然后根据相邻像素点之间量化结果的数值分析,为每个像素点建立8维特 征向量。再以中心像素点与相邻像素点间不同的位置关系为基础,为每种位置关系赋予不同 的权重,根据像素点的特征向量计算出图像中每一个像素点的特征值。最后统计图像中具有 相同特征值的像素点个数,形成特征直方图,以此作为图像检索的依据。实验表明本文方法 能够有效描述图像的颜色分布和图像中物体的空间结构,更加细致地记录图像信息,进一步 增强图像之间的区分能力。与其他方法相比,本文方法检索效果更好。

    Abstract:

    novel method is presented for image feature repres entation. The underlying color information of images is extracted to obtain colo r feature values based on the presented method. With the edge detection of objects in images, e dge orientation values of pixels in images are calculated. Then color feature values and edge orientation values are quantized. Based on quantizatio n result analysis of neighboring pixels, an eight dimensional feature vector is constructed for each pixel. Different weights are given to different positions based on the relationship between a central pixel and neighboring pixels. According to feature vectors of pixels, characteristic values are calculated. Fi nally, the pixels number with the same characteristic value is counted to f orm a histogram, which is the basis for image retrieval. Experimental result s demonstrate that the proposed method can effectively describe color distributi on and spatial structure of objects in images. Moreover, more image details can be saved t o enhance the discrimination power. The method is proved to be much more effective than other methods.

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赵猛;张化祥;刘丽.基于颜色和边缘方向的图像检索方法[J].数据采集与处理,2016,31(3):577-583

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  • 在线发布日期: 2016-06-24