Added RGB to Intensity conversion functions
Added RGB to Intensity conversion functions

git-svn-id: 5398946ba177a3e438c2dae55e2cdfc2fb96c905@8660 a9d63959-f2ad-4865-b262-bf0e56cfafb6

soulsheng/pcl,Tabjones/pcl,jakobwilm/pcl,closerbibi/pcl,nh2/pcl,closerbibi/pcl,stfuchs/pcl,closerbibi/pcl,mikhail-matrosov/pcl,DaikiMaekawa/pcl,fanxiaochen/mypcltest,drmateo/pcl,shyamalschandra/pcl,KevenRing/vlp,lydhr/pcl,3dtof/pcl,the-glu/pcl,simonleonard/pcl,srbhprajapati/pcl,pkuhto/pcl,LZRS/pcl,locnx1984/pcl,pkuhto/pcl,stefanbuettner/pcl,lebronzhang/pcl,fskuka/pcl,raydtang/pcl,raydtang/pcl,MMiknis/pcl,locnx1984/pcl,shangwuhencc/pcl,simonleonard/pcl,damienjadeduff/pcl,sbec/pcl,v4hn/pcl,soulsheng/pcl,shivmalhotra/pcl,kanster/pcl,v4hn/pcl,cascheberg/pcl,kanster/pcl,MMiknis/pcl,fskuka/pcl,nikste/pcl,nh2/pcl,msalvato/pcl_kinfu_highres,soulsheng/pcl,nh2/pcl,RufaelDev/pcc-mp3dg,lebronzhang/pcl,the-glu/pcl,sbec/pcl,cascheberg/pcl,DaikiMaekawa/pcl,ipa-rmb/pcl,jakobwilm/pcl,mikhail-matrosov/pcl,mschoeler/pcl,fanxiaochen/mypcltest,zhangxaochen/pcl,ipa-rmb/pcl,RufaelDev/pcc-mp3dg,mschoeler/pcl,shangwuhencc/pcl,fskuka/pcl,KevenRing/vlp,shyamalschandra/pcl,raydtang/pcl,ipa-rmb/pcl,stefanbuettner/pcl,3dtof/pcl,zavataafnan/pcl-truck,closerbibi/pcl,RufaelDev/pcc-mp3dg,KevenRing/pcl,chenxingzhe/pcl,cascheberg/pcl,fanxiaochen/mypcltest,fskuka/pcl,chatchavan/pcl,shangwuhencc/pcl,zhangxaochen/pcl,shivmalhotra/pcl,mikhail-matrosov/pcl,chenxingzhe/pcl,KevenRing/pcl,3dtof/pcl,LZRS/pcl,locnx1984/pcl,nikste/pcl,ResByte/pcl,LZRS/pcl,zhangxaochen/pcl,msalvato/pcl_kinfu_highres,KevenRing/pcl,pkuhto/pcl,fskuka/pcl,nh2/pcl,wgapl/pcl,mschoeler/pcl,zavataafnan/pcl-truck,chenxingzhe/pcl,mikhail-matrosov/pcl,the-glu/pcl,KevenRing/vlp,zhangxaochen/pcl,KevenRing/vlp,lydhr/pcl,jakobwilm/pcl,shyamalschandra/pcl,ipa-rmb/pcl,shangwuhencc/pcl,KevenRing/pcl,srbhprajapati/pcl,KevenRing/pcl,nikste/pcl,damienjadeduff/pcl,KevenRing/vlp,nikste/pcl,Tabjones/pcl,Nerei/pcl_old_repo,stfuchs/pcl,ResByte/pcl,zhangxaochen/pcl,stfuchs/pcl,starius/pcl,damienjadeduff/pcl,damienjadeduff/pcl,starius/pcl,Tabjones/pcl,shyamalschandra/pcl,pkuhto/pcl,chatchavan/pcl,locnx1984/pcl,drmateo/pcl,stfuchs/pcl,sbec/pcl,wgapl/pcl,jakobwilm/pcl,damienjadeduff/pcl,stefanbuettner/pcl,starius/pcl,MMiknis/pcl,Tabjones/pcl,jakobwilm/pcl,DaikiMaekawa/pcl,ipa-rmb/pcl,raydtang/pcl,srbhprajapati/pcl,kanster/pcl,srbhprajapati/pcl,msalvato/pcl_kinfu_highres,mschoeler/pcl,lebronzhang/pcl,krips89/pcl_newfeatures,jeppewalther/kinfu_segmentation,drmateo/pcl,simonleonard/pcl,shivmalhotra/pcl,soulsheng/pcl,RufaelDev/pcc-mp3dg,zavataafnan/pcl-truck,nikste/pcl,zavataafnan/pcl-truck,lydhr/pcl,chatchavan/pcl,jeppewalther/kinfu_segmentation,stefanbuettner/pcl,LZRS/pcl,starius/pcl,v4hn/pcl,lebronzhang/pcl,RufaelDev/pcc-mp3dg,msalvato/pcl_kinfu_highres,mikhail-matrosov/pcl,starius/pcl,closerbibi/pcl,krips89/pcl_newfeatures,fanxiaochen/mypcltest,wgapl/pcl,fanxiaochen/mypcltest,sbec/pcl,drmateo/pcl,Nerei/pcl_old_repo,stfuchs/pcl,msalvato/pcl_kinfu_highres,shivmalhotra/pcl,srbhprajapati/pcl,MMiknis/pcl,ResByte/pcl,the-glu/pcl,krips89/pcl_newfeatures,simonleonard/pcl,ResByte/pcl,wgapl/pcl,simonleonard/pcl,kanster/pcl,jeppewalther/kinfu_segmentation,3dtof/pcl,lebronzhang/pcl,3dtof/pcl,drmateo/pcl,sbec/pcl,lydhr/pcl,zavataafnan/pcl-truck,the-glu/pcl,shyamalschandra/pcl,soulsheng/pcl,v4hn/pcl,v4hn/pcl,LZRS/pcl,cascheberg/pcl,shivmalhotra/pcl,kanster/pcl,Tabjones/pcl,raydtang/pcl,Nerei/pcl_old_repo,Nerei/pcl_old_repo,cascheberg/pcl,pkuhto/pcl,lydhr/pcl,jeppewalther/kinfu_segmentation,DaikiMaekawa/pcl,shangwuhencc/pcl,DaikiMaekawa/pcl,chenxingzhe/pcl,stefanbuettner/pcl,mschoeler/pcl,wgapl/pcl,chatchavan/pcl,jeppewalther/kinfu_segmentation,locnx1984/pcl,krips89/pcl_newfeatures,chenxingzhe/pcl,krips89/pcl_newfeatures,ResByte/pcl,MMiknis/pcl