对大量图像数据进行一次循环读取 适用于对单个图片 的重复计算-when u deal with lager quantities of pucture, this can help u save a lot of time just with a for loop

根据打孔法，依托对各级变量节点进行分类的方式实现各种变速率LDPC码(According to the hole drilling method, variable rate LDPC codes are implemented by classifying the variable nodes at all levels)