维数是描写空间内的一个点所需的最小实参数的个数.盒维数能反映出分形集的复杂程度，无论是何种图像资料均可以转化为矩阵，
A=imread("e:1.jpg")
FF=size(A)
% 计算灰度矩阵的大小；
for i=1:FF(1)
for j=1:FF(2)
if A(i,j)==0 % 等多种运算是不支持“0”值的；
end
end
end
imwrite(A,’e:2.jpg)’;
% 重新保存经校正后灰度
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001217s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.064463s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001057s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001187s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001221s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003001s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000850s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003592s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.018195s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001165s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 18726 [ RunTime:0.015761s ]
