The anthotype is a type of alternative photographic process. Its name comes from the Greek word for flower: anthos. In an anthotype, images are made using natural pigments which are dissolved into alcohol or water, then painted onto heavy paper. When exposed to sunlight, the pigment bleaches away. Only the portions of the paper covered by a negative or object will retain their full color. This natural bleaching creates a positive image.
I process my some of my anthotypes digitally, increasing color range and contrast. The process records a great deal more information than is visible in the print itself due to the pastel, monochrome nature of the prints.