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In image processing, computer graphics, and photography, high dynamic range imaging (HDRI or just HDR) is a set of techniques that allow a greater dynamic range of luminance between the lightest and darkest areas of an image than current standard digital imaging techniques or photographic methods. This wide dynamic range allows HDR images to more accurately represent the range of intensity levels found in real scenes, ranging from direct sunlight to faint starlight...

Polycephaly is a condition of having more than one head. The term is derived from the greek stems poly- (Anc.Gr. "πολύ") meaning 'much' and kephali- (Anc.Gr. "κεφάλι") meaning "head", and encompasses bicephaly and dicephaly (both referring to two-headedness). A variation is an animal born with two faces on a single head, a condition known as diprosopus. In medical terms these are all congenital cephalic disorders...

Paris /ˈpærɪs/ is the capital and largest city in France, situated on the river Seine, in northern France, at the heart of the Île-de-France region (or Paris Region, French: Région parisienne). The city of Paris, within its administrative limits largely unchanged since 1860, has an estimated population of 2,193,031 (January 2007), but the Paris aire urbaine has a population of 11,836,970 (January 2007), and is one of the most populated metropolitan areas in Europe...

A POTD is an acronym for "Photo of the Day", "Picture of the Day", "Post of the Day" or "Poll of the Day". It is a term most commonly used by online digital photography communities as an honor to outstanding photos that are selected daily from among that community's membership. They can either be tagged as POTD or displayed in a special page on that site...