Tujia brocade is an important carrier of the culture and art of Tujia nationality. Tujia nationality is one of the 56 ethnic groups in China. It is not only of great significance to the study of the evolution of human civilization but also plays a unique role in showing the diversity of world culture, being the common cultural wealth of mankind. Intangible cultural heritage is an important symbol of the historical and cultural achievements of a country or a nation. The contributions of this study include: (1) a calculation method for the cluster number K wherein the experimental results show that the effect of the clustering number K chosen in this paper is ideal (2) an optimization method for the noise points of Tujia brocade patterns based on voting, which can effectively eliminate isolated noise points from brocade patterns. Finally, the desired graphic element contour is extracted through interactive cutting. Then, a method based on voting optimization and dense conditional random field (DenseCRF) (CRF denotes conditional random filtering) is adopted to optimize the image after preliminary segmentation and obtain the image segmentation results.
Second, clustering and segmentation are conducted on each input Tujia brocade image by adopting a Gaussian mixture model (GMM) to obtain a preliminary segmentation image, wherein the image yielded after preliminary segmentation is rough. First, the cluster number K is calculated by fusing local binary patterns (LBP) and gray-level co-occurrence matrix (GLCM) characteristic values. Based on the above problems, this study proposes a method based on an unsupervised clustering algorithm for the segmentation of Tujia brocades. At the same time, deep learning technology cannot be used because there is no standard Tujia brocade dataset. The weave texture of a Tujia brocade is coarse, and the textural features of the background are obvious, so classical segmentation algorithms cannot achieve good segmentation effects. Tujia brocade dataset collected a total of more than 200 clear Tujia brocade patterns and was divided into seven categories, according to traditional meanings. Classic graphic elements are separated from Tujia brocade patterns to establish the Tujia brocade graphic element database, which is used for the protection and inheritance of traditional national culture. It records the most detailed and real cultural history of Tujia nationality and is one of the National Intangible Cultural Heritage. Tujia brocades are important carriers of Chinese Tujia national culture and art.
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