Contrast Enhancement in Direct-Projected Augmented Reality

In direct-projected augmented reality, use of projector makes it possible to utilize 3-D real and large objects as displays and frees from discomforts incidental to wearing a device such as HMD. However, the resulting augmentation usually has poor depth resolution due to projectors with low contrast. In direct-projected augmented reality, the radiometric compensation, which is originally employed to recover the color properties of the projector input image in direct-projected augmented reality, seems to be another cause of decreasing the final contrast of the augmentation. In this paper, a contrast enhancement method is proposed that combines a hue- and saturation- preserving histogram equalization with the radiometric compensation in directprojected augmented reality. The method guarantees that the radiometrically compensated color is maintained while the brightness (or intensity) contrast is enhanced. Experimental results demonstrate the validity of our method.

• Type: Conference
• Year: 2006
• Where: ICMCS
• Authors: Hanhoon Park, Moon-Hyun Lee, Sang-Jun Kim, Jong-Il Park
• Keywords: Augmented Reality, Direct-projected Augmented Reality, ICMCS 2006, Radiometric Compensation