Extraction this features for multiple images ?

Hi

i have a loop for multiple imgaes that i need to do a person re- dentification , and implement HOG, LBP ,SIFT and color histogram.

the origional code came the command line for HOG ---->

tmp = extractHOGFeatures(img,'CellSize',[32 32])  

i know that the image is split into [32 32] i need to tune it to get better results but nothing works ,, any advice ?

i added this line for LBP --->

lbp = extractLBPFeatures(img,'CellSize',[32 32]);

but i want to append both HOG and LBP in one for the results ,, any advice ?

the last thing is SIFT and HSV histogram ,, the codes are a lot and im not really used to MATLAB , not sure which approach i should take

The mean Average Precision of person re-identification that came already with the code given to me is 11.10 and i need to increase it till 43 - 46

regards