Modified fourier transform recognition of echographic images

P. Sirotti, Mauro Zanchetti, G. Rizzatto, F. Stacul
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Abstract

The recognition of echotexture in echographic images may fail due to the distortions introduced by the scan system. We have implemented a rotation and scale invariant recognition method of echographic textures. The significant features assumed to characterise the images are vectors whose components are the values of a modified Fourier transform (MFT) of the images. Our method assures a good reliability and allows a short computation time, also when implemented on small computers. The method has till now been proved over breast and thyroid images, exhibiting a very good discrimination capability.
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超声图像的改进傅里叶变换识别
超声图像中回声纹理的识别可能由于扫描系统引入的畸变而失败。实现了一种超声纹理的旋转和尺度不变识别方法。假设用来表征图像的重要特征是向量,其分量是图像的修改傅里叶变换(MFT)的值。我们的方法保证了良好的可靠性和较短的计算时间,也适用于小型计算机。目前,该方法已在乳房和甲状腺图像上得到了验证,显示出很好的识别能力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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