Frequency-spatial domain based salient region detection

A frequency-spatial domain based model for salient region detection was proposed. The paper gives a thorough theoretical analysis of detecting salient gradients belong to salient region in the frequency domain. The model detects and highlights salient gradient changes in the frequency domain firstly; then the image is segmented into regions in the spatial domain, and the salient gradients detection and segment results are fused using a probabilistic framework to produce the full resolution, region-wise saliency map. It was demonstrated that this model has the ability to detect salient regions accurately and highlight them uniformly. A publically available benchmark was used to demonstrate that the model outperformed state-of-the-art algorithms when identifying the salient regions where greater attention should be paid by human observers.