颜色直方图是图像检索中最为常用的颜色特征，它提取简便，具有旋转不变性 （Rotation invariance）、尺度不变性（Scaleinvariance）、平移不变性（Translation invariance），而且对观测视角的变化不太敏感。
基于8个网页-相关网页
实验结果表明，该算法具有旋转不变性，对异常值和非线性问题具有稳定性，且正确识别率较高。
Experimental result shows that the algorithm is invariant to rotations and robust to outliers and nonlinear problems, and it has higher correct recognition rate.
该算法检测速度快、精度高，而且具有旋转不变性，有效的解决了基于直角坐标的检测算法的不足。
This algorithm has many advantages, such as fast detection speed, high accuracy and rotation invariance. It resolves the disadvantage of the detection algorithm based on rectangular coordinates.
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。
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.
应用推荐