We propose a CIECAM02-based tone mapping technique for color image contrast enhancement that works especially well in bright surrounding conditions. The CIECAM02 is inherently strong when considering human visual systems (HVS) and surrounding conditions. In general, dark regions look darker in bright surrounding conditions, so some details in these dark regions tend to disappear. To overcome this problem, we propose a global tone mapping technique for color image contrast enhancement that uses a gamma encoding and the I/O relationship of the CIECAM02 in bright surrounding conditions. The proposed method makes the contrast of the source image stronger in bright surrounding conditions. We confirmed the superior performance of the proposed method in bright surrounding conditions by psychophysical experiment.
Bibliographical noteFunding Information:
We would like to thank LG Electronics for providing the images. This work was partially supported by the Korea Science and Engineering Foundation (KOSEF) through the Biometrics Engineering Research Center (BERC) at Yonsei University (No. R112002105070030(2009)) and was partially supported by the (Ministry of Knowledge Economy MKE), Korea, under the (Information Technology Research Center ITRC) support program supervised by the Institute for Information Technology Advancement [IITA; IITA-2009-(C1090-0902-0011)].
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics