对图像的边缘进行检测，不同hough，而是通过图像的灰度低度的变化，来判断图像的边缘，从而得到图像边缘-right image edge detection, hough different, but through the low gray image of change, to determine the edge of the image, and thus Edge
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002067s ]
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:0.085532s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002465s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001932s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002294s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003760s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002460s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.006242s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.018332s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002817s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 152747 [ RunTime:0.001142s ]
