Image Analysis in Terms of Characteristic Parameters and Its Application in Placenta Grading. 圖像特徵參量分析方法及其在胎盤分級中的應用。
The watermark consists of a pseudorandom sequence and its strength is modulated according to the local image characteristics. 水印為二值偽隨機序列,其強度可通過局部圖像特徵來調節。