MATLAB单双精度的转换

function [ output_args ] = guoyingying( yuantu )
%郭莹莹
%  Detailed explanation goes here
rice=imread('rice.jpg');
figure;
subplot(1,3,1);
imshow(rice);
title('原图');
I=double(rice); 		%转换为双精度类型
J=I*0.43+60;
rice1=uint8(J); 		%转换为uint8
subplot(1,3,2);
imshow(rice1);
title('双精度图');
J=I*1.5-60;
rice2=uint8(J); 		%转换为uint8
subplot(1,3,3);
imshow(rice2);
title('单精度图');