Use the integer label from ONNX (#180)

ONNX models return labels as ints, but they're still useful for
filtering etc. Convert the int to a string and use it as the label.

This allows, for example, matching just breasts (2) or filtering out
exposed bellies (0) from NudeNet.

Co-authored-by: Sean Lynch <seanl@literati.org>

modules/impact/core.py

@@ -666,8 +666,8 @@ class ONNXDetector:
                         cropped_mask[y1 - crop_y1:y2 - crop_y1, x1 - crop_x1:x2 - crop_x1] = 1
                         cropped_mask = dilate_mask(cropped_mask, dilation)
 
-                        # make items
-                        item = SEG(None, cropped_mask, scores[i], crop_region, item_bbox, None, None)
+                        # make items. just convert the integer label to a string
+                        item = SEG(None, cropped_mask, scores[i], crop_region, item_bbox, str(labels[i]), None)
                         result.append(item)
 
             shape = h, w