ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

In order to measure the rice flag leaf angle rapidly and nondestructively, a portable system for measuring rice flag leaf angle based on Android smart phone was developed. The rear camera of the smartphone was used for flag leaf images acquisition, and the flag leaf angle was obtained through image preprocessing, lines detection, K-means clustering and vector method. The interfaces and function modules of system software were designed by using the Android programming technology, which realized the extraction algorithm of rice flag leaf angle using JNI and Android NKD to call OpenCV database in the Android platform. It can complete the operational flows of new test establishing, material information inputting, flag leaf images obtaining, angle value outputting as well as interface saving. 80 plants of rices in four varieties were tested to verify the system performance. The test results demonstrated that, comparing with the measurement results of protractors, the average absolute error of this system was 1.34°, the relative error was 2.7%, and the correlation coefficient between the observed values and actual values was 0.997. It was indicated that the proposed system could effectively measure the rice flag leaf angles.