Efficient Color Correction Using Normalized Singular Value. For Duststorm Image Enhancement

      Аннотация: A duststorm image has a reddish or yellowish color cast. Though a duststorm image and a hazy image are obtained using the same pro-cess, a hazy image has no color distortion as it has not been disturbed by particles, but a duststorm image has color distortion owing to an imbalance in the color channel, which is disturbed by sand particles. As a result, a duststorm image has a degraded color channel, which is rare in certain channels. Therefore, a color balance step is needed to enhance a duststorm image naturally. This study goes through two steps to im-prove a duststorm image. In general, the dark channel prior (DCP) is frequently applied in the dehazing step. However, the existing DCP method has a halo effect similar to an over-enhanced image due to a dark channel and a patch image. According to this point, this study proposes to adjustable DCP (ADCP). In the experiment results, the proposed method was superior to state-of-the-art methods both subjectively and objectively.

Ключевые слова: duststorm image enhancement, Singular Value Decomposition, normalized singular value, dark channel prior, adjustable dark channel prior