Removed kwargs and added them in constructor

Signed-off-by: Rishabh Thakur <quic_ristha@quicinc.com>

TrainingExtensions/torch/src/python/aimet_torch/elementwise_ops.py

@@ -344,24 +344,25 @@ def forward(self, inp: torch.Tensor, roi: torch.Tensor, batch_indices: torch.Ten
 
 class NonMaxSuppression(torch.nn.Module):
     """
-    Implementation od NMS Op in the form of nn.Module
+    Implementation of NMS Op in the form of nn.Module
     """
-    @staticmethod
-    def forward(*args, **kwargs) -> torch.Tensor:
+    def __init__(self, iou_threshold: float, max_output_boxes_per_class: int):
+        super().__init__()
+        self.iou_threshold = iou_threshold
+        self.max_output_boxes_per_class = max_output_boxes_per_class
+
+    def forward(self, *args) -> torch.Tensor:
         """
         Forward-pass routine for NMS op
         """
         batches_boxes = args[0]
         batch_scores = args[1]
-        iou_thershold = kwargs['iou_threshold']
-        max_output_boxes_per_class = kwargs['max_output_boxes_per_class']
 
         res = []
         for index, (boxes, scores) in enumerate(zip(batches_boxes, batch_scores)):
             for class_index, classes_score in enumerate(scores):
-                res_ = torchvision.ops.nms(boxes, classes_score, iou_thershold)
+                res_ = torchvision.ops.nms(boxes, classes_score, self.iou_threshold)
                 for val in res_:
                     res.append([index, class_index, val.detach()])
-                res = res[:(max_output_boxes_per_class*(index+1))]
+                res = res[:(self.max_output_boxes_per_class *(index+1))]
         return torch.Tensor(res).type(torch.int64)
-