circular iris 中文意思是什麼
circular iris
解釋
圓形光闌-
At first we improve the methods of iris image preprocessing, including an efficient arithmetic of evaluation iris images, an improving method of locating iris, calibrating iris image by the translation of coordinate and the circular shift of code, a eatimate of the background illumination by bicubic spline, and the image enhancement by the dual tree complex wavelet transform. next we designed the recognition arithmetic based on the location of the local maxima of the wavelet transform modulus. in the thesis lots of simulation are performed by means of matlab and visual c + +
首先改進了虹膜預處理方法，實現了一種快速高效的虹膜質量評價演算法;設計了一種改進的兩步虹膜定位演算法，準確的定位了虹膜的內外邊界;利用坐標轉換和編碼的循環移位實現了對虹膜圖像的配準;利用雙三次樣條函數擬合虹膜圖像背景，去除了非均勻光照對虹膜識別的影響;使用二分樹復數小波方法增強了虹膜圖像的對比度;在識別演算法方面，本文設計了一種「基於小波模極值點位置的虹膜識別演算法」 。 -
The proposed method accurately and fleetly locates the inner boundary of the iris by means of detecting the diameter of the pupil in the binary image. then, the outer boundary is detected by a deformable circular template
它利用了虹膜瞳孔的生理特徵，在二值化后的虹膜圖像中尋找水平最長弦，從而定位瞳孔的大致位置，在此基礎上經過進一步的細化提取準確的瞳孔中心位置。 -
A versatile zoom lens with bright imaging at any focal length. features a circular iris with excellent defocusing characteristics, and advanced distance integration ( adi ) for enhanced flash shooting performance
多功能變焦鏡頭，無論在任何焦距之下，皆可創造出亮麗的影像；特色是配備出色的散焦功能的圓形光圈，以及可提升閃光攝影的效能表現的先進綜合距離（ adi ）閃燈測光。 -
A wide - angle, zoom lens with high resolution and brightness. features a circular iris with excellent defocusing characteristics, and advanced distance integration ( adi ) for enhanced flash shooting performance
具高解像度及高亮度的廣角變焦鏡頭；特色是配備出色的散焦功能的圓形光圈，以及可提升閃光攝影的效能表現的先進綜合距離（ adi ）閃燈測光。 -
10 ma l, wang y, tan t. iris recognition using circular symmetricfilters. in
和傳統的虹膜圖像配準方法一樣，虹膜圖像首先被預處理。
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