It is challenging to capture good photographs in a low-light environment. Flash is often applied to increase the illumination, but flash ruins the natural ambient lighting and makes the scene look flat. Solutions without using flash include prolonging exposure time, enlarging the aperture or using high ISO film (or the equivalent setting for digital cameras). These brighten the image at the expense of image quality. In this paper, we present a method to avoids such problems. Our technique combines multiple photographs, taken under varying flash intensities, to recover the intrinsic ambient scene radiance. From this, we can re-render the scene under an arbitrary shutter speed to create a visually pleasant image. We can also simulate the effects of different white-balance settings, as well as different flash intensities. Experiments show that our method can produce high quality images compared to traditional non-flash solutions.
Ambient image recovery and rendering from flash photographs
IEEE International Conference on Image Processing 2005 ; 2 ; II-1038
2005-01-01
481596 byte
Conference paper
Electronic Resource
English
Ambient Image Recovery and Rendering from Flash Photographs
British Library Conference Proceedings | 2005
|Texture Extraction from Photographs and Rendering with Dynamic Texture Mapping
British Library Conference Proceedings | 1999
|Improving the Retinex algorithm for rendering wide dynamic range photographs
British Library Online Contents | 2004
|Impact flash at low ambient pressures
TIBKAT | 1964
|Improving the Retinex algorithm for rendering wide dynamic range photographs [4662-41]
British Library Conference Proceedings | 2002
|