A Review of Triangle Geometry Features in Object Recognition

The geometrical form such as polygon shape can be used to represent object image via their geometrical properties. The geometry shapes such as polygon including rectangles, squares, pentagons and triangles can be used to produce geometry features through the feature extraction process. The use of geometrical forms in object recognition has been applied in determining similar object images which have broadly used in recognizing digit, biometric and vehicle detection. The triangle shape formation is essential to construct in order to produce triangle features. Otherwise, the triangle features cannot be produced. However, each of object recognition has different approaches to construct triangle shape due to their different characteristics such as style, pattern, shape and type which made the triangle features produced are different. This paper reviews several approaches that have used in producing the triangle geometry features in various object recognition such as fingerprint, face, digit dan vehicle detection. The aspects addressed are triangle shape formation, elements used as the benchmark to generate triangle points and properties or characteristics used as features type.