机构地区: 深圳职业技术学院
出 处: 《光学精密工程》 2008年第11期2290-2295,共6页
摘 要: 针对超声图像分辨率较低,尤其是横向分辨率低的特点,采用基于插值和小波图像融合相结合的方法对相控阵超声图像进行了多种方式的对比试验。结果表明:采用区域能量大小判定的设计思想改善超声图像的分辨率是可行的,其中利用小波分解将经过插值放大的待融合图像分解为低频部分和高频部分,然后对低频部分采用平均法,高频部分采用区域能量最大的融合方式,由此,极大地改善了超声图像的分辨率。 Several kinds of experiments by proposed methods is carried out based on combining inter- polation and wavelet image fusion to improve the resolution of ultrasonic images, especially for trans- verse resolution. The experimental results show that it is feasible for improving the resolution of ultra- sound image to determine image by comparing the region energy. The wavelet decomposition is used to decompose the interpolated images to the low frequency part and the high frequency part, then, the low frequency part is processed with the method of average, and the high frequency part with the fu- sion method of the largest region energy, which obtains better effect on improving the resolution of ultrasonlc images