该方法在一定的量化标准下利用小渡变换提取图象的特征信息，通过混沌序列对其加密生成数字水印。
In this method, the original image 's feature is extracted by using wavelet transform and quantization. The feature information is changed into watermark by the chaotic sequence encryption.
通过桥渡水文计算，确定了设防流量及设防水位，校核了大桥主要特征值；
The designed discharge and designed flood level are determined by hydrological computation and main characteristic value of highway bridge is checked.
主要介绍了特征线法在溪洛渡泄洪洞挑流鼻坎设计中的应用情况。
Application and research of method of characteristics in design of flip bucket for spillway tunnel at Xiluodu Hydropower Project is mainly presented.
应用推荐