两个图像质量评价函数，psnr峰值信噪比，正则均方误差nmse，能可用于去噪图像和压缩图像的质量评价，很有用啊。-Two image quality evaluation of the function. Including psnr PSNR, it is mean-square error nmse other. Images can be used for de-noising and compression of image quality evaluation.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001098s ]
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:0.062214s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001081s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001196s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001017s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003146s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000889s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003917s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015130s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001266s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 321356 [ RunTime:0.018730s ]
