Aspect-orientation and feature interaction 内容导向与功能交互
local orientation feature 局部方向特征
This paper proposes a novel feature orientation watermark algorithm based on digital wavelet transform(DWT). Feature points are extracted by utilizing the characteristic of image from the low frequency sub-band of wavelet coefficients as index of watermark embedding positions.
提出了一种基于小波变换的特征定位数字水印算法,利用图像自身特性,在小波系数低频子带中提取特征点作为水印嵌入位置的索引。
参考来源 - 基于特征定位的数字图像盲水印技术·2,447,543篇论文数据，部分数据来源于NoteExpress
A novel gradient orientation histogram was built using a Gaussian-weighted circular window and a major orientation to each feature point was assigned based on local image properties.
构建了一种新的局部梯度方向直方图，同时定义了特征点的主方向，从而提出了一种具有旋转不变性的图像配准算法。
The geological feature of Sanfengshan Daqingshan gold deposit was described in detail and the ore prospecting orientation was pointed out.
详细阐述了三峰山—大青山金矿地质特征，并指出了找矿方向。
A 3d feature is extracted from the accumulation and main motion orientation, and a Bayesian classifier is used for smoke detection.
根据累积量和主运动方向提取出3维特征矢量，采用贝叶斯分类器进行烟雾的检测。
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