Predicting a light probe for an outdoor image

摘要

Methods and systems for predicting light probes for outdoor images are disclosed. A light probe database is created to learn a mapping from the outdoor image's features to predicted outdoor light probe illumination parameters. The database includes a plurality of images, image features for each of the plurality of images, and a captured light probe for each of the plurality of images. A light probe illumination model based on a sun model and sky model is fitted to the captured light probes. The light probe for the outdoor image may be predicted based on the database dataset and fitted light probe models.

主权项

1. A method, comprising:
predicting a light probe for an outdoor image based on a learned mapping from the outdoor image's features to light probe illumination parameters; wherein the light probe illumination parameters comprise sun parameters and sky parameters; wherein the learned mapping is based on a light probe database and a double exponential sun model or von-Mises Fisher sun model for the sun parameters and a sky model for the sky parameters, and wherein the light probe database comprises: a plurality of images comprising a plurality of objects at a plurality of different locations captured under a plurality of illumination conditions; image features for each of the plurality of images; and a plurality of captured light probes associated with the plurality of images.