Fast digital image de-hazing methods for real-time video processing

摘要

Described is system for image de-hazing for real-time video processing. A video comprising image frames is received as input. In determining an atmospheric veil value to use, the system leverages temporal correlations or specific scene constraints to determine whether to use a new atmospheric veil value or a previously determined atmospheric veil value. A global atmospheric light value is estimated as an average of a set of the brightest pixels in an upper region of an image frame. A de-hazed image is generated from the current image frame using either the previously determined atmospheric veil value or the new atmospheric veil value and the global atmospheric light value.

主权项

1. A system for image de-hazing for video processing, the system comprising:
one or more processors and a non-transitory computer-readable medium having executable instructions encoded thereon such that when executed, the one or more processors perform operations of: receiving a video comprising a series of image frames as input, wherein each image frame comprises a plurality of regions comprising a plurality of pixels; for each image frame in the series of image frames, determining if a predetermined image frame number threshold has been reached; wherein if the predetermined image frame number has not been reached, a previously determined atmospheric veil value is used, and wherein if the predetermined image frame number has been reached, a new atmospheric veil value is determined; estimating a global atmospheric light value; and generating a de-hazed image from the current image frame using either the previously determined atmospheric veil value or the new atmospheric veil value and the global atmospheric light value.