changed normalization of color histograms to L1
changed normalization of color histograms to L1

sameeptandon/sail-car-log,sameeptandon/sail-car-log,sameeptandon/sail-car-log,sameeptandon/sail-car-log,sameeptandon/sail-car-log,sameeptandon/sail-car-log,sameeptandon/sail-car-log