griffin-measure.jar

In this paper we propose a new image randomness measure using Shannon entropy over local image blocks. The proposed local Shannon entropy measure overcomes several weaknesses of the conventional global Shannon entropy measure, including unfair randomness comparisons between images of different sizes, failure to discern image randomness before and after image shuffling, and possible inaccurate scores for synthesized images. Statistical tests pertinent to this new measure are also derived. This new measure is therefore both quantitative and qualitative. The parameters in the local Shannon entropy measure are further optimized for a better capture of local image randomness. The estimated statistics and observed distribution from 50,000 experiments match the theoretical ones. Finally, two examples are given, applying the proposed measure to image randomness among shuffled images and encrypted images. Both examples show that the proposed method is more effective and more accurate than the global Shannon entropy measure

使用ArcGIS JS API4.X版本做的地图测量功能，具体效果可参考：https://blog.csdn.net/shijie_nihao/article/details/99249361

measure

这是关于实分析的电子书，高清，最新版本，经典著作，英文版

基于FPGA+STM32F103得频率相位测试仪。测频率范围方波0-25M，正弦波0-1M以上。相位精度方波小于0.5%，正弦波小于0.8%。有关该项目更多资料请见https://blog.csdn.net/qq_42838291/article/details/90813469

可以进行纳米尺寸的图片测量，例如细胞的直径的测量等。

聚类效果评价是指通过定量的方式对聚类分析算法得到的结果进行可靠性评估常见的评价指标有准确率precision召回率recall纯度purityF值F-measure(Shehata et al, 2010) 等假定输入样本为 为基准聚类结果为实际聚类结果则对于聚类中某基准类别准确率和召回率分别定义如下: 实际聚类结果与基准聚类结果的比较 首先定义准确率和召回率分别有公式1和2计算得到 1 2 其中

陶哲轩大神的测度论，英文版书籍，非常适合当教材使用。

第一部分：频率范围是：1KHZ-9999KHz，且频率可调，步进值为1kHz的方波发生器； 第二部分：简易的频率计； 有源代码和板子原理图，及参考书