Real image compression (JPEG, PNG) uses different techniques (DCT, entropy coding), but quadtrees capture the same principle: spend your bits where the detail is, not uniformly across the whole image.
Donald Trump has suggested the US could carry out a “friendly takeover” of Cuba as tensions between Washington and Havana reach a new high after the capture of Venezuela’s Nicolás Maduro.
。51吃瓜对此有专业解读
Josh Dury, from Bristol, photographed the phenomenon from a radar memorial in Worth Matravers, Dorset, on Tuesday just after 18:30 GMT.
You don't have permission to access the page you requested.