**9. Conclusion**

In this chapter, we presented the domain of content based image retrieval system for large scale images using parallel platforms, we covered the basic concepts of

## *Multimedia Information Retrieval*

content based image retrieval system. We introduced content based image retrieval system for large scale images (Big data) databases and its problems, the definition of Big Data and its platforms, these later allow us to go beyond classic tools, which fail to process these huge volumes of data, and move towards modern tools, which face to the large data size. Some of the tools we have introduced in this chapter include storage platforms like HDFS and Tachyon and processing platforms like Hadoop MapReduce and Spark.
