大律法和迭代法是实现二值化比较好的两种方法，此处是两种方法的源代码，参照何斌的那本书。-large Torah and iterative method is the value of two relatively good two methods, here are two methods of source code, He Bin light of the book.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001041s ]
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:0.067344s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001105s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002511s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001187s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003293s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001043s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004134s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016652s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001294s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 142245 [ RunTime:0.026298s ]
