在模糊增强的基础上进行灰度线性变换，进一步改善图像的增强效果。
On the basis of fuzzy enhancement gray scale linear transformation is used to improve image enhancement result further.
灰度线性变换法能够加大图像动态范围，增强高通滤波法能够增强图像的精细结构。
We can expand dynamic range using grey linear transformation, and make fine structures improved using enhanced high -pass filtering method.
说明：MF C实现灰度图像的各种点运算，如图像反色，窗口变换，线性变换，阈值变换，灰度均衡等。
MFC to achieve a variety of gray-scale image point operations, such as anti-color images, the window transform, linear transformation, threshold transform, gray balance, etc.
图1上部是原始红外图像，中部是非线性灰度(指数变换)变换结果，下部是分段线性变换结果。
Fig. 1 Original infrared image (top), results of non-linear gray value transform (exponential transform) (middle), results of fragment linear gray value transform (bottom).
该方法通过非线性变换，将高灰度分辨率图像压缩为低灰度分辨率图像，能更好地体现语谱图的细微变化。
With nonlinear transformation, the high-resolution gray image was compressed to low gray-resolution image, so the detail variation of spectrum would be better reflected.
该方法通过非线性变换，将高灰度分辨率图像压缩为低灰度分辨率图像，能更好地体现语谱图的细微变化。
With nonlinear transformation, the high-resolution gray image was compressed to low gray-resolution image, so the detail variation of spectrum would be better reflected.
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