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    • 1. 发明申请
    • PATTERN EXTRACTION APPARATUS
    • 图案提取装置
    • WO1998020454A1
    • 1998-05-14
    • PCT/JP1996003212
    • 1996-11-01
    • YAMATAKE-HONEYWELL CO., LTD.KOBAYASHI, KojiNAKAJIMA, HiroshiAOKI, TakafumiKAWAMATA, MasayukiHIGUCHI, Tatsuo
    • YAMATAKE-HONEYWELL CO., LTD.
    • G06T07/00
    • G06K9/522
    • The collation Fourier image data (Fig. 1D) FB, which is the two-dimensional discrete Fourier transform (DFT) of image data (Fig. 1C) of a collation pattern, is combined with the two-dimensional DFT of registered Fourier image data (Fig. 1B) FA, and the resultant data is processed for amplitude limitation and for its two-dimensional DFT. A correlation peak is extracted from correlation components appearing in the data (Fig. 1E) of the combined two-dimensional DFT, and a predetermined region including this correlation peak is masked (Fig. 1F). The masked image data is processed to obtain its two-dimensional inverse DFT with the amplitude restored, then combined again with the registered Fourier image data FA, and processed to determine its two-dimensional inverse DFT. Consequently, image data including a different pattern or a transferred pattern are obtained as shown in Fig. 1G.
    • 作为核对图案的图像数据(图1C)的二维离散付里叶变换(DFT)的核对付里叶图像数据(图1D)FB与登记的付里叶图像数据的二维DFT组合 (图1B)FA,并且对于幅度限制和其二维DFT处理所得数据。 从出现在组合的二维DFT的数据(图1E)中的相关分量中提取相关峰值,并且包括该相关峰值的预定区域被屏蔽(图1F)。 对掩蔽的图像数据进行处理以获得其恢复幅度的二维逆DFT,然后再次与注册的付里叶图像数据FA组合,并进行处理以确定其二维逆DFT。 因此,获得包括不同图案或转印图案的图像数据,如图3所示。 1G。