Detecting Interest Points and Affine Regions Using Histogram Information

李威霆(Wei-Ting Lee)

指導教授 ： 陳煥宗

國立清華大學/電機資訊學院/資訊工程學系/碩士(2009年)

https://doi.org/10.6843/NTHU.2009.00609

摘要

We present a new method for detecting interest points using histogram information. Unlike existing interest point detectors, which measure pixel-wise differences in image intensity, our detectors incorporate histogram-based representations, and thus can find image regions that present a distinct distribution in the neighborhood. The proposed detectors are able to capture large-scale structures and distinctive textured patterns, and exhibit strong invariance to rotation, illumination variation, and blur. The experimental results show that the proposed histogram-based interest point detectors perform particularly well for the tasks of matching textured scenes under blur and illumination changes, in terms of repeatability and distinctiveness. An extension of our method to space-time interest point detection for action classification is also presented.

關鍵字

特殊點 ； 直方圖

並列摘要

我們提出利用直方圖資訊這個新方法來偵測影像上的特殊點，不像以前的方法是利用像素之間的亮度差距來偵測特殊點，而我們的方法包含直方圖表示法，因此可以從影像中找出直方圖分布相較於鄰近區域較為特殊的區域，而這個方法能夠捕捉到大範圍的結構以及特殊的紋理，並且對旋轉、亮度變化、模糊等現象展現出強大的不變性，在實驗中我們利用重複性以及特殊性來評估我們演算法的好壞，從實驗結果可以得知，我們的方法在模糊以及亮度變化的情形中比對含有紋理的圖片有十分好的效果，而我們的方法也可以延伸來偵測空間時間上的特殊點，並且用來做動作分類。

並列關鍵字

interest points ； histogram-based

參考文獻

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