Bleeding fragment localization using time domain information for WCE videos

Wei Shi, Junzhou Chen, Honghan Chen, Qiang Peng, Tao Gan
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引用次数: 3

Abstract

Small intestine bleeding is one of the most common disease in human gastrointestinal tract. The Wireless Capsule Endoscopy (WCE) has been an advanced technology to inspect the intestine in recent years. In this paper, a new time domain based method was proposed to locate bleeding fragment in WCE videos. The spatial feature and the time domain information were combined to make the decision. The proposed method consists of four phases: First, dark holes and wrinkle edges of each frame were removed in preprocessing. Second, each frame was segmented into small patches by using super-pixel segmentation. A coarse bleeding region filter was adopted to remove noisy patches. Third, the red ratio feature and the a feature of the WCE images were extracted. Finally, the bleeding fragment was detected based on the temporal red ratio feature and the temporal a features fusion. Experimental results show that the proposed method achieves good performance.
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基于时域信息的WCE视频出血片段定位
小肠出血是人类消化道最常见的疾病之一。无线胶囊内窥镜(WCE)是近年来小肠检查的一种先进技术。本文提出了一种新的基于时域的WCE视频出血片段定位方法。结合空间特征和时域信息进行决策。该方法分为四个阶段:首先,在预处理中去除每帧图像的黑洞和褶皱边缘;其次,利用超像素分割技术将每帧图像分割成小块;采用粗出血区滤波去除噪声斑块。第三,提取WCE图像的红比特征和a特征;最后,基于颞红比特征和颞a特征融合检测出出血碎片。实验结果表明,该方法具有良好的性能。
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