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井下导线点缺失的边角检验法
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作者 张成友 《东北测绘》 1999年第3期47-47,共1页
随着煤炭的生产,井下巷道的导线点经常由于施工,打风门,恢复巷道等原因而遭到破坏,给井下测量工作带来诸多不便,如图1所示,井下巷道C点缺失,现存只有A、B、D三个测点,因此在正常测量中是无法作边、角检验和校核。 在条件特殊,又急需在... 随着煤炭的生产,井下巷道的导线点经常由于施工,打风门,恢复巷道等原因而遭到破坏,给井下测量工作带来诸多不便,如图1所示,井下巷道C点缺失,现存只有A、B、D三个测点,因此在正常测量中是无法作边、角检验和校核。 在条件特殊,又急需在此处施工,而附近又没有导线点施测的情况下,BD通视如何利用现存A、B、D点进行边、角检验,来满足施测导线精度要求,是本文讨论的中心内容。 展开更多
关键词 井下导线点 缺失 边角检验 巷道测量
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Human Body Image Edge Detection Based on Wavelet Transform
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作者 李勇 付小莉 《Journal of Donghua University(English Edition)》 EI CAS 2003年第3期138-140,共3页
Human dresses are different in thousands way. Human body image signals have big noise, a poor light and shade contrast and a narrow range of gray gradation distribution. The application of a traditional grads method o... Human dresses are different in thousands way. Human body image signals have big noise, a poor light and shade contrast and a narrow range of gray gradation distribution. The application of a traditional grads method or gray method to detect human body image edges can't obtain satisfactory results because of false detections and missed detections. According to the peculiarity of human body image, dyadic wavelet transform of cubic spline is successfully applied to detect the face and profile edges of human body image and Mallat algorithm is used in the wavelet decomposition in this paper. 展开更多
关键词 Wavelet Transform Human Body Image Edges Detection
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