An Output of Oil Painting Stylized Digital Image from Photographs with Optimum Tone Reproduction

摘要

As one of the most important properties for transfer of gradation information, the quality of tone reproduction is the key index of an image system. In this paper, using non-photorealistic rendering method, oil painting stylized images are generated from photographs. The chroma of digital images of the style of portrait and landscape is adjusted. At the same time, the brush stroke of impressionist oil painting image is scanned, the characteristics of oil painting's brush stroke are extracted, the direction of brush stroke is analyzed, the amplitude intensity and the frequency of brush stroke is adjusted, in order to achieve an oil painting stylized image close to the original oil painting. On this basis, the tone reproduction curve of oil painting stylized image is adjusted. Then, through psychological evaluation, oil painting stylized image's optimum tone reproduction curve is obtained.