Frame detection using gradients fuzzy logic and morphological processing for distant color eye images in an intelligent iris recognition system

- Bespectacled eye image will reduce the iris segmentation accuracy.
- HSV color space provided better space for the segmentation process.
- Sobel operator and high pass filter provide gradient information on the frame edges.
- Fuzzy logic is performed as the decision making for frame detection.
- Dilation operation fills the discontinuity edges of the frame.