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基于字体字符属性引导的文本图像编辑方法
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作者 陈靖超 徐树公 丁友东 《计算机应用》 CSCD 北大核心 2023年第5期1416-1421,共6页
针对文本图像编辑任务中编辑前后文字风格样式不一致和生成的新文本可读性不足的问题,提出一种基于字体字符属性引导的文本图像编辑方法。首先,通过字体属性分类器结合字体分类、感知和纹理损失引导文本前景风格样式的生成方向,提升编... 针对文本图像编辑任务中编辑前后文字风格样式不一致和生成的新文本可读性不足的问题,提出一种基于字体字符属性引导的文本图像编辑方法。首先,通过字体属性分类器结合字体分类、感知和纹理损失引导文本前景风格样式的生成方向,提升编辑前后的文字风格样式一致性;其次,通过字符属性分类器结合字符分类损失引导文字字形的准确生成,减小文本伪影与生成误差,并提升生成的新文本的可读性;最后,通过端到端微调的训练策略为整个分阶段编辑模型精炼生成结果。对比实验中,所提方法的峰值信噪比(PSNR)、结构相似度(SSIM)分别达到了25.48 dB、0.842,相较于SRNet(Style Retention Network)和SwapText分别提高了2.57 dB、0.055和2.11 dB、0.046;均方误差(MSE)为0.0043,相较于SRNet和SwapText分别降低了0.0031和0.0024。实验结果表明,所提方法能有效提升文本图像编辑的生成效果。 展开更多
关键词 文本图像编辑 字符识别 字体识别 多任务训练 属性引导
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Endoscopic ultrasound-guided biliary drainage with placement of a fully covered metal stent for malignant biliary obstruction 被引量:16
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作者 Tae Hyeon Kim Seong Hun Kim +2 位作者 Hyo Jeong Oh Young Woo Sohn Seung Ok Lee 《World Journal of Gastroenterology》 SCIE CAS CSCD 2012年第20期2526-2532,共7页
AIM:To determine the utility of endoscopic ultrasoundguided biliary drainage(EUS-BD)with a fully covered self-expandable metal stent for managing malignant biliary stricture. METHODS:We collected data from 13 patients... AIM:To determine the utility of endoscopic ultrasoundguided biliary drainage(EUS-BD)with a fully covered self-expandable metal stent for managing malignant biliary stricture. METHODS:We collected data from 13 patients who presented with malignant biliary obstruction and underwent EUS-BD with a nitinol fully covered selfexpandable metal stent when endoscopic retrograde cholangiopancreatography(ERCP)fails.EUS-guided choledochoduodenostomy(EUS-CD)and EUS-guided hepaticogastrostomy(EUS-HG)was performed in 9 patients and 4 patients,respectively. RESULTS:The technical and functional success rate was 92.3%(12/13)and 91.7%(11/12),respectively. Using an intrahepatic approach(EUS-HG,n=4),there was mild peritonitis(n=1)and migration of the metal stent to the stomach(n=1).With an extrahepatic approach(EUS-CD,n=10),there was pneumoperitoneum(n=2),migration(n=2),and mild peritonitis (n=1).All patients were managed conservatively with antibiotics.During follow-up(range,1-12 mo),there was re-intervention(4/13 cases,30.7%)necessitated by stent migration(n=2)and stent occlusion(n=2). CONCLUSION:EUS-BD with a nitinol fully covered self-expandable metal stent may be a feasible and effective treatment option in patients with malignant biliary obstruction when ERCP fails. 展开更多
关键词 Endoscopic ultrasound-guided Biliary drainage Metal stent Biliary obstruction
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