LDOP: Local Directional Order Pattern for Robust Face Retrieval

Understand

The local descriptors have gained wide range of attention due to their enhanced discriminative abilities.

• It has been proved that the consideration of multi-scale local neighborhood improves the performance of the descriptor, though at the cost of increased dimension.
• This paper proposes a novel method to construct a local descriptor using multi-scale neighborhood by finding the local directional order among the intensity values at different scales in a particular direction.
• Local directional order is the multi-radius relationship factor in a particular direction.