update trt dynamic shape for v3 rec (#6066)

* update trt dynamic shape for v3 rec

* update trt dynamic shape for v3 rec

tools/infer/utility.py

@@ -271,9 +271,10 @@ def create_predictor(args, mode, logger):
             elif mode == "rec":
                 if args.rec_algorithm != "CRNN":
                     use_dynamic_shape = False
-                min_input_shape = {"x": [1, 3, 32, 10]}
-                max_input_shape = {"x": [args.rec_batch_num, 3, 32, 1536]}
-                opt_input_shape = {"x": [args.rec_batch_num, 3, 32, 320]}
+                imgH = int(args.rec_image_shape.split(',')[-2])
+                min_input_shape = {"x": [1, 3, imgH, 10]}
+                max_input_shape = {"x": [args.rec_batch_num, 3, imgH, 1536]}
+                opt_input_shape = {"x": [args.rec_batch_num, 3, imgH, 320]}
             elif mode == "cls":
                 min_input_shape = {"x": [1, 3, 48, 10]}
                 max_input_shape = {"x": [args.rec_batch_num, 3, 48, 1024]}