Theme: Object recognition using Geometric Properties(area, perimeter,circularity,etc) . In order to obtain the results the project was implemented using C++ and the tool C++Builder. For every geometric feature has been created a method that return a numeric value. Having these results I implemented a function which calculates the Euclidian distance that is often used for detecting and object recognition. The application it s used to recognize the symbols of playing cards. -Theme: Object recognition using Geometric Properties(area, perimeter,circularity,etc) . In order　to obtain the results the project was implemented using C++ and the tool C++Builder. For every geometric feature has been created a method that return a numeric value. Having these results I implemented a function which calculates the Euclidian distance that is often used for detecting and object recognition. The application it s used to recognize the symbols of playing cards.