According to the characteristics of nuclear medical image, a contrast stretching algorithm of smoothed image is provided.
根据核医学图像的特点，给出了核医学图像的平滑对比度拉伸处理算法。
For the feature of the liver B-ultrasound image, we adopt the Gaussian low-pass filter and contrast-stretching transformation methods.
针对肝脏B超声图像的特点，本文在对图像进行预处理时采用了高斯低通滤波与灰度拉伸相结合的技术。
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