Invention Grant
US09344638B2 Constant bracket high dynamic range (cHDR) operations 有权
恒定支架高动态范围(cHDR)操作

Constant bracket high dynamic range (cHDR) operations
Abstract:
Systems, methods, and computer readable media to capture and process high dynamic range (HDR) images when appropriate for a scene are disclosed. When appropriate, multiple images at a single—slightly underexposed—exposure value are captured (making a constant bracket HDR capture sequence) and local tone mapping (LTM) applied to each image. Local tone map and histogram information can be used to generate a noise-amplification mask which can be used during fusion operations. Images obtained and fused in the disclosed manner provide high dynamic range with improved noise and de-ghosting characteristics.
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