Normalized tone-mapping operators for color quality improvement in 3DTV

Abstract

A normalized tone-mapping method that can reproduce a 3DTV image with an improved color sensation is proposed. This method uses 128 levels of gray-scale images to measure the RGB tone-curves in both 2D and 3D modes and then models the curves using a piece-wise linear form. To compensate the difference between these two tone-curve models, tonemapping operators are generated. In addition, the tone-mapping operators are normalized to reduce distortions in the color contrast. Experimental results show an 8.49dB improvement of image quality as compared with a conventional 3DTV.

Differential Evolution-based Approach for Tone-Mapping of High Dynamic Range Images

“…Since the human visual sensitivity follows the Gaussian distribution, Kim and Kuatz [32] proposed an average of scene's log luminance-based method to perform the tone mapping. Within the two-dimensional and three-dimensional spaces, the authors of [33] modeled the tone mapping curves using the normalization of the RGB color space to mitigate the distortions in the color contrasts. A good level of improvement was achieved in the tone-mapped images in [34][35].…”