LOCALLY-ADAPTIVE MULTI-SCALE IMAGE ENHANCEMENT

Organization Name

samsung electronics co., ltd.

Inventor(s)

Zeeshan Nadir of Allen TX (US)

Hamid Rahim Sheikh of Allen TX (US)

John William Glotzbach of Allen TX (US)

LOCALLY-ADAPTIVE MULTI-SCALE IMAGE ENHANCEMENT

This abstract first appeared for US patent application 20240404029 titled 'LOCALLY-ADAPTIVE MULTI-SCALE IMAGE ENHANCEMENT

Original Abstract Submitted

a method includes downsampling an input frame and performing global contrast enhancement of the input frame based on the downsampled input frame to generate a globally contrast-enhanced frame. the method also includes generating texture maps at different scale resolutions based on the downsampled input frame. the method further includes generating clipped histograms at the different scale resolutions based on the downsampled input frame. the method also includes generating lookup tables (luts) at the different scale resolutions based on the texture maps and the clipped histograms. the method further includes applying the luts at the different scale resolutions to the input frame in order to generate locally contrast-enhanced frames. in addition, the method includes blending the locally contrast-enhanced frames and the globally contrast-enhanced frame to generate an output frame.