METHOD, COMPUTER PROGRAM AND ELECTRONIC DEVICE FOR TONE MAPPING

METHOD, COMPUTER PROGRAM AND ELECTRONIC DEVICE FOR TONE MAPPING

A method, a computer program and an electronic device for tone mapping a HDR input image into a LDR output image are proposed, the method comprising:a) obtaining a luminance component of the input image,b) obtaining an initial tone mapping curve, which is a global tone mapping curve,c) obtaining a l...

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Hauptverfasser: KAMAL, Saikat, BLAWAT, Meinolf
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
PHYSICS
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creator KAMAL, Saikat
BLAWAT, Meinolf
description A method, a computer program and an electronic device for tone mapping a HDR input image into a LDR output image are proposed, the method comprising:a) obtaining a luminance component of the input image,b) obtaining an initial tone mapping curve, which is a global tone mapping curve,c) obtaining a luminance histogram that represents the luminance distribution of the input image,d) determining a plurality of clusters of the luminance distribution from the luminance histogram, wherein each cluster has a centroid,e) generating an adapted tone mapping curve by adapting, for each cluster, the slope of the initial tone mapping curve depending on a concentration of luminance values in that cluster, wherein a higher concentration of luminance values results in a greater slope of the adapted tone mapping curve,f) generating the output image by applying the adapted tone mapping curve to at least the luminance component of the input image.
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subjects CALCULATING
COMPUTING
COUNTING
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
PHYSICS
title METHOD, COMPUTER PROGRAM AND ELECTRONIC DEVICE FOR TONE MAPPING
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