“…The cluster methods have been applied in many image retrieval problems such as apply K‐mean algorithm and Euclidean distance to cluster and apply in image retrieval (Lin, Chen, Lee, & Liao, ), build CBIR using K‐mean algorithm and Mahalanobis distance between colour feature vectors of images (Banerjee, Bandyopadhyay, & Pal, ), use the K‐mean algorithm and MPEG7 palette to cluster and retrieve similarity images (Saboorian, Jamzad, & Rabiee, ), combine the scale feature of colours, texture, shape to cluster, and query similar images (Zakariya, Ali, & Ahmad, ), cluster images based on colours and K‐mean algorithm (An, Baek, Shin, Chang, & Park, ), query image by content based on clusters of images and the unsupervised learning (Chen, Wang, & Krovetz, ), and so forth.…”