Gradient Threshold Based Image Transition Region Extraction and Segmentation
Traditional transition region extraction methods depend much on the clip limits low L and high L . In which methods low L and high L can not often be obtained correctly from real images, which will result in incorrect extraction of transition region and finally bad quality of segmentation. A novel gradient threshold-based transition region extraction method (GT-TREM) is presented. Transition regions can steadily be extracted by GT-TREM. Experimental results demonstrated the robustness and effectiveness of the algorithm. Keywords-transition region; image segmentation; gradient; effective average gradient; threshold