首页> 外国专利> UNSUPERVISED IMAGE-BASED ANOMALY DETECTION USING MULTI-SCALE CONTEXT-DEPENDENT DEEP AUTOENCODING GAUSSIAN MIXTURE MODEL

UNSUPERVISED IMAGE-BASED ANOMALY DETECTION USING MULTI-SCALE CONTEXT-DEPENDENT DEEP AUTOENCODING GAUSSIAN MIXTURE MODEL

机译:基于多尺度上下文相关的深度自动编码高斯混合模型的基于图像的非监督异常检测

摘要

A false alarm reduction system is provided that includes a processor cropping each input image at randomly chosen positions to form cropped images of a same size at different scales in different contexts. The system further includes a CONDA-GMM, having a first and a second conditional deep autoencoder for respectively (i) taking each cropped image without a respective center block as input for measuring a discrepancy between a reconstructed and a target center block, and (ii) taking an entirety of cropped images with the target center block. The CONDA-GMM constructs density estimates based on reconstruction error features and low-dimensional embedding representations derived from image encodings. The processor determines an anomaly existence based on a prediction of a likelihood of the anomaly existing in a framework of a CGMM, given the context being a representation of the cropped image with the center block removed and having a discrepancy above a threshold.
机译:提供了一种减少错误警报的系统,该系统包括处理器,该处理器在随机选择的位置处裁剪每个输入图像,以在不同上下文中以不同比例形成相同大小的裁剪图像。该系统进一步包括CONDA-GMM,其具有第一和第二条件深度自动编码器,分别用于(i)将没有相应中心块的每个裁剪图像作为输入来测量重建和目标中心块之间的差异,以及(ii )以目标中心块拍摄完整的裁剪图像。 CONDA-GMM基于重建误差特征和从图像编码得出的低维嵌入表示构造密度估计。假定上下文是去除了中心块并且具有高于阈值的差异的上下文的表示,则处理器基于对CGMM框架中存在异常的可能性的预测来确定异常的存在。

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