US 12,256,161 B2
Simultaneous subsampling and high dynamic range imaging in multi-camera systems
Mikko Ollila, Helsinki (FI)
Assigned to Varjo Technologies Oy, Helsinki (FI)
Filed by Varjo Technologies Oy, Helsinki (FI)
Filed on Jul. 24, 2023, as Appl. No. 18/357,654.
Prior Publication US 2025/0039564 A1, Jan. 30, 2025
Int. Cl. H04N 25/40 (2023.01); H04N 23/84 (2023.01); H04N 25/57 (2023.01)
CPC H04N 25/41 (2023.01) [H04N 23/843 (2023.01); H04N 25/57 (2023.01)] 15 Claims
OG exemplary drawing
 
1. An imaging system comprising:
a first image sensor and at least one second image sensor that are to be employed to capture at least one first image and at least one second image, respectively, using at least two different settings pertaining to at least one of: an exposure time, a sensitivity, an aperture size; and
at least one processor configured to:
obtain, from the first image sensor and the at least one second image sensor, first image data and second image data corresponding to the at least one first image and to the at least one second image, respectively, wherein the first image data comprises first subsampled image data of at least a first part of a first field of view of the first image sensor, and the first part of the first field of view comprises at least a part of an overlapping field of view between the first image sensor and the at least one second image sensor; and
process the first image data and the second image data together, using a high dynamic range (HDR) imaging technique, to generate a first HDR image and a second HDR image, wherein, when processing, the at least one processor is configured to:
perform interpolation and demosaicking on the first subsampled image data, by employing the second image data and using the HDR imaging technique, to generate first intermediate image data;
perform demosaicking on the second image data, by employing the first image data and using the HDR imaging technique, to generate second intermediate image data; and
process the first intermediate image data and the second intermediate image data, to generate the first HDR image and the second HDR image, respectively.