18770149. TECHNIQUES FOR ADJUSTING GAIN MAPS FOR DIGITAL IMAGES (Apple Inc.)
TECHNIQUES FOR ADJUSTING GAIN MAPS FOR DIGITAL IMAGES
Organization Name
Inventor(s)
Maryam Azimi Hashemi of Mountain View CA (US)
Garrett M. Johnson of San Francisco CA (US)
Nicolas P. Bonnier of Mountain View CA (US)
Paul M. Hubel of Mountain View CA (US)
TECHNIQUES FOR ADJUSTING GAIN MAPS FOR DIGITAL IMAGES
This abstract first appeared for US patent application 18770149 titled 'TECHNIQUES FOR ADJUSTING GAIN MAPS FOR DIGITAL IMAGES
Original Abstract Submitted
The embodiments described herein set forth techniques for adjusting gain maps for digital images. In particular, headroom metrics, midtone metrics, highlight metrics, shadow metrics, diffuse white metrics, etc., or some combination thereof, can be determined based on characteristics of a given digital image, characteristics of a scene that corresponds to the digital image, circumstances under which the scene was captured, and so on. These metrics, or some combination thereof, can then be used to modify a gain map associated with the digital image. Additionally, a histogram of the modified gain map can be generated, where, in turn, the histogram can be used to modify any of the aforementioned metrics. Subsequently, the histogram and/or any combination of the modified metrics can be used to adjust the modified gain map.