Tone Mapping For Low-Light Video Frame Enhancement

摘要

A technique is provided for generating sharp, well-exposed, color images from low-light images. A series of under-exposed images is acquired. A mean image is computed and a sum image is generated each based on the series of under-exposed images. Chrominance variables of pixels of the mean image are mapped to chrominance variables of pixels of the sum image. Chrominance values of pixels within the series of under-exposed images are replaced with chrominance values of the sum image. A set of sharp, well-exposed, color images is generated based on the series of under-exposed images with replaced chrominance values.

主权项

1. An image acquisition and processing device, comprising:
an image acquisition unit configured to:
acquire a plurality of sharp images of a scene; andacquire a blurred image nominally of the same scene; an image combining unit configured to:
generate a first combined image based, at least in part, on a first sharp image, from the plurality of sharp images, and color information of the blurred image; andgenerate a second combined image based, at least in part, on a second sharp image, from the plurality of sharp images, and the first combined image;wherein the first sharp image is different than the second sharp image; and an image display unit configured to:
display the second combined image.