图像清晰度评价

图像清晰度评价，包含标准差，空间频阈，熵

function total_Benner=Benner_algorithm（imalevel）
[image_widthimage_height]=size（ima）;
total_Benner =ones（1level）;
sstd=0;
for i=1:level   
    imb=ima;
    
              ff5=0 ; 
            for w=2:（image_width-2）                
                 for h=2:（image_height-1）                      
                    h1=uint32（ima（wh））; 
                    h2=uint32（ima（w+2h））;                     
                    ff5=uint32（（h1-h2）^2）+ uint32（ff5）;
                   
                 end                  
            end    
            total_Benner（i）=ff5;
if sstd< total_Benner（i）
sstd= total_Benner（i）;
end
[pqr]=size（imb）;
[XY]=meshgrid（1:p1:q）;
PSF = fspecial（‘gaussian‘5*i5*i）;
    ima = imfilter（imbPSF‘conv‘）;
    %figureimshow（ima）;
end
 total_Benner= total_Benner/sstd;

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2013-05-24 17:17  image sharpness\
     文件         829  2013-05-22 22:35  image sharpness\Benner_algorithm.m
     文件         520  2013-05-22 22:19  image sharpness\entropy.m
     文件       40642  2011-12-06 10:57  image sharpness\lena.jpg
     文件         778  2013-05-22 22:39  image sharpness\main.m
     文件         689  2013-05-22 22:19  image sharpness\space_frequency.m
     文件         636  2013-05-22 22:22  image sharpness\standard_dev.m