A Color Rendering Operator for High Dynamic Range Image using Tone Mapping Method

The mapping of the potentially high dynamic range of the real world luminance to the low dynamic range of photographic devices is one of the classic photographic tasks. Therefore, the colour rendering or colour reproduction method is proposed and described in many literatures over the past five decades. However, there are well-known problems associated with these methods. This paper presents a colour compression method, which is a combination of tone mapping and chromatic adaptation. The tone mapping resultant image is obtained by using chromatic and achromatic colours. The resulting image, thereafter, is processed through the cone response function, and emphasis is laid on human visual perception (HVP). The experiment results show that the proposed method yields better performance of the colour compression over the conventional method in subjective quality and colour reproduction. Key-Words: HDR image, color compression, XYZ tristimulus, tone mapping method, cone response function, HVP