Method and system for identifying destroying granularity of confidential medium

The invention relates to a method and system for identifying destroying granularity of a confidential medium. The method for identifying the destroying granularity of the confidential medium comprises the steps of adopting a trained medium fragment identification model to obtain the medium types and masks of crushed medium fragments, then calculating the pixel areas occupied by the corresponding medium fragments in an image according to the masks, and according to the pixel areas and the medium types of the medium fragments, determining whether the crushed medium fragments are unqualified fragments or not, and then determining whether the crushing degree meets the requirements of the destroying granularity of the medium or not according to the number of the unqualified fragments and the total number of the crushed medium fragments, so that the crushing effect of the confidential medium fragments is judged. 本发明涉及一种保密介质销毁颗粒度的识别方法和系统。所述保密介质销毁颗粒度的识别方法，通过采用训练好的介质碎片识别模型，得到粉碎后介质碎片的介质种类和掩膜，然后，根据掩膜计算对应介质碎片在图像中所占的像素面积，