*****1. file and foler*****
 case_parse.py - parse case configuration file
 cfg_modify.py - parse or modify the module building/runing configuration files
 cocodataset.py - load and process the coco data and label for object detection models
 cocoj2x.py - transfer coco label files to the format of VOC. Only needs run once when prepare COCO dataset
 compare_class_topk.py - classification model top1, top5 accuracy calculate
 eval_acc_ssd.py - mAP calculate if model outputs have NMS
 input_classify.py - do input data quantize
 mAP - folder, mAP calculating 
 model_build.py - model building and running
 pre_p_classify.py - data loading and preprocess for classificaiton models
 random_pick.py - random pickup input for classification and object detection models
 segment - input loading, preprocessing and mIoU calculation for segmentation models
 ssd - Anchor decoding and NMS for object detection models whose output needs decoding and NMS.

