CPC G06T 5/92 (2024.01) [G06T 5/20 (2013.01); G06T 5/50 (2013.01); G06T 5/70 (2024.01); H04N 23/741 (2023.01); G06T 2207/20208 (2013.01); G06T 2207/20221 (2013.01)] | 18 Claims |
1. A method for generating a high-dynamic-range (HDR) image, comprising:
denoising a short-exposure-time image, wherein denoising comprises
applying a first guided filter to the short-exposure-time image, the guided filter utilizing a long-exposure-time image as its guide,
after the step of denoising, applying a second guided filter to the long-exposure-time image, the second guided filter utilizing the short-exposure-time image as its guide, and scaling at least one of the short-exposure-time image and the long-exposure-time image to place the short-exposure-time image and the long-exposure-time image on a common radiance scale; and
after the step of scaling, merging the short-exposure-time image with the long-exposure-time image to generate the HDR image.
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