The countries in Central and East Europe are periodically affected by strong earthquakes originating from Vrancea zone and significant seismic effects are recorded all over Romania, Moldova, Ukraine, Bulgaria, Serbia, Hungary, etc. Vrancea earthquakes are of practical and theoretical interest due to the social and economical influence on a vast territory. The main result of this study is the unique collection of intensity data for the Vrancea events of 1940, 1977, 1986, and 1990, which represents a real step forward that overcomes the inherent differences affecting the present-day maps, hampered by political boundaries. This is done adopting a unique modelling procedure and processing the available data in an integrated way. As a result, unified macroseismic maps of the relevant portion of the CEI region are produced using two new procedures, Modified Polynomial Filtering and Diffused Boundary