نتایج جستجو برای: روش sift
تعداد نتایج: 372817 فیلتر نتایج به سال:
A novel digital image stabilization approach using Harris and Scale Invariant Feature Transform (SIFT) was presented in this article. Using SIFT in digital image stabilization, too many feature points and matches were extracted, but some of them were not so stable. Using these feature points and matches can not only increase the computational effort, but also enhance the wrong matching probabil...
تناظریابی به عنوان یک فرآیند اساسی در فتوگرامتری رقومی شناخته میشود. انجام این فرآیند اساسی در فتوگرامتری بردکوتاه با توجه به اعوجاجات هندسی قابل توجه در تصاویر همگرا، بسیار پیچیده بوده و اغلب الگوریتمهای موجود نمیتوانند نتایجی با دقت مطلوب را ایجاد کنند. در این مقاله روشی کارآمد جهت تناظریابی تصاویر همگرا در فتوگرامتری بردکوتاه ارائه شده است. در روش پیشنهادی به منظور انجام عملیات تناظریابی،...
This paper provides a new approach to recognize facial expressions. In this paper, facial expression recognition is based on appearance based features or we can say that low level features. We used two different approaches to categories the expression into seven different classes. These classifications based on Scale Invariant Feature Transform (SIFT) and Local Gabor Binary Filter (LGBP). First...
We present a mobile image matching application for Android mobile phone called Virtual Telescope to assist users in viewing distant buildings. The application automatically augments photo's field of view by retrieving replacement images and satellite images from the Internet. The application adopts content based image retrieval method and allow user two choices of feature descriptor, namely Sca...
In this paper, we present a mirror reflection invariant descriptor which is inspired from SIFT. While preserving tolerance to scale, rotation and even affine transformation, the proposed descriptor, MIFT, is also invariant to mirror reflection. We analyze the structure of MIFT and show how MIFT outperforms SIFT in the context of mirror reflection while performs as well as SIFT when there is no ...
Features from the Scale Invariant Feature Transformation (SIFT) are widely used for matching between spatially or temporally displaced images. Recently a topology on the SIFT features of a single image has been introduced where features of a similar semantics are close in this topology. We continue this work and present a technique to automatically detect groups of SIFT positions in a single im...
The SIFT framework has shown to be effective in the image classification context. In [4], we designed a Bag-of-Words approach based on an adaptation of this framework to time series classification. It relies on two steps: SIFT-based features are first extracted and quantized into words; histograms of occurrences of each word are then fed into a classifier. In this paper, we investigate techniqu...
Registration of optical and synthetic aperture radar (SAR) images is challenging because extracting located identically unique features on both are tricky. This paper proposes a novel SAR image registration method based relative total variation (RTV) scale-invariant feature transform (SIFT), named RTV-SIFT, to extract points the edges structures construct structural edge descriptors improve acc...
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