Color Saturation Compensation in iCAM06 for High-Chroma HDR Imaging

Kim, Hwi-Gang; Lee, Sung Hak; Bae, Tae-Wuk; Sohng, Kyu‐Ik

doi:10.1587/transfun.e94.a.2353

Cited by 7 publications

(9 citation statements)

References 5 publications

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“…The literature [4] gives the specific descriptions of the iCAM06 tone mapping method. However, it has several serious shortcomings, for example, lack of detail layer enhancement, heavy computation cost caused by the bilateral filter, colour cast resulting from the HPE space [18], the loss of colour richness and the problem of desaturation [14].…”

Section: Overview Of the Icam06 Methodsmentioning

confidence: 99%

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Hierarchical tone mapping based on image colour appearance model

Xiao

Liu

et al. 2014

IET Computer Vision

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To solve the problem of low efficiency and poor effect of the current tone mapping methods for the high dynamic range images, the authors propose a hierarchical tone mapping algorithm based on colour appearance model. The discrete Gaussian kernel is used to speed up the bilateral filter. The operation of tone compression in RGB colour space is adopted to correct the colour casts. The extreme values of the pixels are also adjusted in the detail layer. Moreover, after the tone mapping, the colour saturation is enhanced in the image regions of rich details and sharp edges. Experimental results show that the proposed algorithm with less computational cost reduces the halo effect significantly, and achieves the natural colour and the rich details. It outperforms the state‐of‐the‐art methods in terms of visual quality and objective indicators.

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Section: Overview Of the Icam06 Methodsmentioning

confidence: 99%

“…Kim et al . [14] and Kwon et al . [15] achieved the desaturation of the iCAM06 algorithm partially with the rotation matrix and adaptive factor model, respectively.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical tone mapping based on image colour appearance model

Xiao

Liu

et al. 2014

IET Computer Vision

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“…The default iCAM06 doesn't have a parameter for considering the saturation correction. Therefore, it is necessary to add the color saturation compensation step for solving the under-saturation problem [11].…”

Section: Saturation Compensation For the Icam06mentioning

confidence: 99%

“…The calculated ' , ' sc s c u v are transformed to the corrected tristimulus X sc Y sc Z sc [11]. The new tristimulus are then transformed into the IPT uniform opponent color space.…”

Section: Saturation Compensation For the Icam06mentioning

confidence: 99%

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Color correction using rotation matrix for HDR rendering in iCAM06

Kim

Lee

2011

2011 IEEE International Conference on Computer Vision Workshops (ICCV Workshops)

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Recently, a new image appearance model called iCAM06 was designed for high dynamic range (HDR) image rendering. Most of the HDR rendering algorithms include many color space transformations from RGB of input image to RGB of output devices for HDR rendering. The iCAM06, the representative HDR rendering algorithm, also contains several color space conversion steps during the processes of chromatic adaptation, tone compression, and etc. However, frequent color space changes of the iCAM06 cause hue shift and color distortion of the output image. To solve these problems, we propose the hue shift correction step using the rotation matrix and reduce the hue change of the output images in the iCAM06. In this paper, the rotation matrix for the hue shift correction is calculated on relationship between the input and output tristimulus value. And experimental results show that the proposed method has high hue accuracy compared to the default iCAM06.

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Visual acuity-adaptive detail enhancement and shadow noise reduction for iCAM06-based HDR imaging

Lee

Kwon

et al. 2015

Opt Rev

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Color Saturation Compensation in iCAM06 for High-Chroma HDR Imaging

Cited by 7 publications

References 5 publications

Hierarchical tone mapping based on image colour appearance model

Hierarchical tone mapping based on image colour appearance model

Color correction using rotation matrix for HDR rendering in iCAM06

Visual acuity-adaptive detail enhancement and shadow noise reduction for iCAM06-based HDR imaging

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