fix ch_ppocr_mobile_v2_0_det benchmark fps diff

test_tipc/configs/ch_ppocr_mobile_v2_0_det/train_infer_python.txt

@@ -13,7 +13,7 @@ train_infer_img_dir:./train_data/icdar2015/text_localization/ch4_test_images/
 null:null
 ##
 trainer:norm_train
-norm_train:tools/train.py -c configs/det/ch_ppocr_v2.0/ch_det_mv3_db_v2.0.yml -o Global.pretrained_model=./pretrain_models/MobileNetV3_large_x0_5_pretrained Global.print_batch_step=1 Train.loader.shuffle=false
+norm_train:tools/train.py -c configs/det/ch_ppocr_v2.0/ch_det_mv3_db_v2.0.yml -o Global.pretrained_model=./pretrain_models/MobileNetV3_large_x0_5_pretrained Global.print_batch_step=2 Train.loader.shuffle=false
 pact_train:null
 fpgm_train:null
 distill_train:null

test_tipc/prepare.sh

@@ -32,6 +32,13 @@ if [ ${MODE} = "benchmark_train" ];then
         cd ./train_data/ && tar xf icdar2015_benckmark.tar
         ln -s ./icdar2015_benckmark ./icdar2015
         cd ../
+        if [[ ${model_name} =~ "ch_ppocr_mobile_v2_0_det" ]];then
+            # expand gt.txt 2 times
+            cd ./train_data/icdar2015/text_localization
+            for i in `seq 2`;do cp train_icdar2015_label.txt dup$i.txt;done
+            cat dup* > train_icdar2015_label.txt && rm -rf dup*
+            cd ../../../
+        fi
     fi
     if [[ ${model_name} =~ "ch_ppocr_server_v2_0_det" || ${model_name} =~ "ch_PP-OCRv3_det" ]];then
         rm -rf ./train_data/icdar2015