Customized Dictionary Learning for Subdatasets with Fine Granularity

Figure 1

Three sorted dictionaries corresponding to two individual ones and the global one are demonstrated as images. Each one has a size of 64 × 256. The dictionaries for individuals 1 and 2 are trained from 40,000 patches picked from 24 of their corresponding facial images. The global one is trained from 80,000 patches sampled from 200 facial images belonging to 50 different individuals.