add contrast improvement index
bug fix
add FKNN

暫不放FRNN因為有先定義需要再確認
Merge branch 'master' of https://github.com/yunfuliu/pixkit
add FRNN FKNN

add FRNN FKNN
那個沒是我自己的東西~
Merge pull request #36 from Li-Ying/master

Add FKNN FRNN
add SNS function
add function RajuNair2014
modify order of functions in enhancement
modify order
add function (LCE_BSESCS2014) and debug the RajuNair2014
add function
parameter fix

parameter fix
test
Merge pull request #37 from JinYu-Syue/master

parameter fix
change folder
Merge remote-tracking branch 'origin/master'