[求助]非常不明白,imshow处应该写什么才能正确显示图像?

[Jael]

我想打开一个名为CrimeFprint.mat的图像文件,所以写了一段程序
load('CrimeFprint.mat');
f=fopen('CrimeFprint.mat');
imshow(f);
运行后没错,但是没有图像出现,这是为什么呢? 于是我又改了一段:
load('CrimeFprint.mat');
fopen('CrimeFprint.mat');
imshow('CrimeFprint.mat');
结果出现以下错误:
??? Error using ==> imuitools\private\imageDisplayParseInputs>getImageFromFile
Could not read this file: "CrimeFprint.mat"

Error in ==> imuitools\private\imageDisplayParseInputs at 128
[cdata,map] = getImageFromFile(filename);

Error in ==> imshow at 146
[cdata, cdatamapping, clim, map, xdata, ydata, ...

Error in ==> dippart2 at 3
imshow('CrimeFprint.mat');
这是为什么?到底imshow处应该写什么才能正确显示图像?