Google Insights for Search is a service by Google similar to Google Trends, providing insights into the search terms people have been entering into the Google search engine. Unlike Google Trends, Google Insights for Search provides a visual representation of regional interest on a countries map. It displays top searches and rising searches that may help with keyword research. Results can be narrowed down with categories that are displayed for each search terms.
According to Google Insights for Search, people is no longer interested in "CBIR" and/or "Image Retrieval" :)