对于给定图像 < f3.tif > ，实现下列结果。

a. 直方图均衡化后的图像（灰度级数256）和图像均衡化后的直方图

b. 直方图均衡化后的图像（灰度级数128）和图像均衡化后的直方图

c. 直方图均衡化后的图像（灰度级数64）和图像均衡化后的直方图

d. 直方图均衡化后的图像（灰度级数8）和图像均衡化后的直方图

-For a given image <f3.tif>, to achieve the following results.

a. histogram after histogram equalization (256 gray levels) and image after equalization

b. histogram after histogram equalization (128 gray levels) and image after equalization

Histogram c. histogram equalization after (64 gray levels) and image after equalization

d. histogram (8 gray levels) and the image after the histogram equalization equalization after