Many apps are designed to solve a problem or accomplish task, such as managing health condition, creating to-do-list, finding work. The solutions that app developers offer reflects how they believe users and other stakeholders understand the problem. Each individual developer may have different ideas but analyzing many together can reveal average typical ways in set think about problems their s...

feature extraction is a main step in all perceptual image hashing schemes in which robust features will led to better results in perceptual robustness. simplicity, discriminative power, computational efficiency and robustness to illumination changes are counted as distinguished properties of local binary pattern features. in this paper, we investigate the use of local binary patterns for percep...