Then, the depth map is refined by locally modifying the depth values within the significance region. To obtain impressive visual effects, the viewer’s main focus is considered, and thus salient object detection is performed to explore the significance region for visual attention. However, stereoscopic effects of synthesized views obtained from this depth map are limited and dissatisfy viewers. Rather than retrieving a precise depth value for pixels from the depth cues, a direction angle of the image is estimated and then the depth gradient, in accordance with the direction angle, is integrated with superpixels to obtain the depth map. The linear and atmospheric perspective cues that compensate each other are employed to estimate depth information. This study introduces an image-based 2D-to-3D conversion system that provides significant stereoscopic visual effects for humans.
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