Computational Long Exposure Mobile Photography

What is it about?

Our paper describes a computational photography system tightly integrated in a smartphone camera. It generates long exposure photographs at 12 megapixels with HDR tone-mapping, fully automatically, at the tap of the shutter button. The user can capture images hand-held, without the need for a tripod or a lens filter, making this traditionally challenging photography style accessible to every smartphone user.

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Why is it important?

The image quality produced by smartphone cameras has increased exponentially over the past decade due to advances in computational photography, often surpassing that of expensive DSLR cameras. Recent additions include excellent treatment for portrait and night time photography despite the tiny size of the camera lens and sensor. This work adds a camera mode that handles long exposure photography, which has been both absent from any smartphone camera and difficult to explore with traditional cameras, and makes this style accessible to any casual photographer.