app.py

try:
    import detectron2
except:
    import os
    os.system('pip install git+https://github.com/facebookresearch/detectron2.git')

from matplotlib.pyplot import axis
import gradio as gr
import requests
import numpy as np
from torch import nn
import requests
import cv2

import torch
import detectron2
from detectron2 import model_zoo
from detectron2.engine import DefaultPredictor
from detectron2.config import get_cfg
from detectron2.utils.visualizer import Visualizer
from detectron2.data import MetadataCatalog
from detectron2.utils.visualizer import ColorMode
from detectron2.structures import Instances
from detectron2.structures import Boxes

damage_model_path = 'damage/model_final.pth'
scratch_model_path = 'scratch/model_final.pth'
parts_model_path = 'parts/model_final.pth'

if torch.cuda.is_available():
    device = 'cuda'
else:
    device = 'cpu'
 
cfg_scratches = get_cfg()
cfg_scratches.merge_from_file(model_zoo.get_config_file("COCO-InstanceSegmentation/mask_rcnn_R_50_FPN_3x.yaml"))
cfg_scratches.MODEL.ROI_HEADS.SCORE_THRESH_TEST = 0.8
cfg_scratches.MODEL.ROI_HEADS.NUM_CLASSES = 1
cfg_scratches.MODEL.WEIGHTS = scratch_model_path
cfg_scratches.MODEL.DEVICE = device

predictor_scratches = DefaultPredictor(cfg_scratches)

metadata_scratch = MetadataCatalog.get("car_dataset_val")
metadata_scratch.thing_classes = ["scratch"]

cfg_damage = get_cfg()
cfg_damage.merge_from_file(model_zoo.get_config_file("COCO-InstanceSegmentation/mask_rcnn_R_50_FPN_3x.yaml"))
cfg_damage.MODEL.ROI_HEADS.SCORE_THRESH_TEST = 0.7
cfg_damage.MODEL.ROI_HEADS.NUM_CLASSES = 1
cfg_damage.MODEL.WEIGHTS = damage_model_path
cfg_damage.MODEL.DEVICE = device

predictor_damage = DefaultPredictor(cfg_damage)

metadata_damage = MetadataCatalog.get("car_damage_dataset_val")
metadata_damage.thing_classes = ["damage"]

cfg_parts = get_cfg()
cfg_parts.merge_from_file(model_zoo.get_config_file("COCO-InstanceSegmentation/mask_rcnn_R_50_FPN_3x.yaml"))
cfg_parts.MODEL.ROI_HEADS.SCORE_THRESH_TEST = 0.75
cfg_parts.MODEL.ROI_HEADS.NUM_CLASSES = 19
cfg_parts.MODEL.WEIGHTS = parts_model_path
cfg_parts.MODEL.DEVICE = device

predictor_parts = DefaultPredictor(cfg_parts)

metadata_parts = MetadataCatalog.get("car_parts_dataset_val")
metadata_parts.thing_classes = ['_background_',
 'back_bumper',
 'back_glass',
 'back_left_door',
 'back_left_light',
 'back_right_door',
 'back_right_light',
 'front_bumper',
 'front_glass',
 'front_left_door',
 'front_left_light',
 'front_right_door',
 'front_right_light',
 'hood',
 'left_mirror',
 'right_mirror',
 'tailgate',
 'trunk',
 'wheel']


def merge_segment(pred_segm):
    merge_dict = {}
    for i in range(len(pred_segm)):
        merge_dict[i] = []
        for j in range(i+1,len(pred_segm)):
            if torch.sum(pred_segm[i]*pred_segm[j])>0:
                merge_dict[i].append(j)

    to_delete = []
    for key in merge_dict:
        for element in merge_dict[key]:
            to_delete.append(element)

    for element in to_delete:
        merge_dict.pop(element,None)

    empty_delete = []
    for key in merge_dict:
        if merge_dict[key] == []:
            empty_delete.append(key)

    for element in empty_delete:
        merge_dict.pop(element,None)

    for key in merge_dict:
        for element in merge_dict[key]:
            pred_segm[key]+=pred_segm[element]

    except_elem = list(set(to_delete))

    new_indexes = list(range(len(pred_segm)))
    for elem in except_elem:
        new_indexes.remove(elem)

    return pred_segm[new_indexes]

def inference(image):
    img = np.array(image)
    outputs_damage = predictor_damage(img)
    outputs_parts = predictor_parts(img)
    outputs_scratch = predictor_scratches(img)
    out_dict = outputs_damage["instances"].to("cpu").get_fields()
    merged_damage_masks = merge_segment(out_dict['pred_masks'])
    scratch_data = outputs_scratch["instances"].get_fields()
    scratch_masks = scratch_data['pred_masks']
    damage_data = outputs_damage["instances"].get_fields()
    damage_masks = damage_data['pred_masks']
    parts_data = outputs_parts["instances"].get_fields()
    parts_masks = parts_data['pred_masks']
    parts_classes = parts_data['pred_classes']
    new_inst = detectron2.structures.Instances((1024,1024))
    new_inst.set('pred_masks',merge_segment(out_dict['pred_masks']))


    parts_damage_dict = {}
    parts_list_damages = []
    for part in parts_classes:
        parts_damage_dict[metadata_parts.thing_classes[part]] = []
    for mask in scratch_masks:
        for i in range(len(parts_masks)):
            if torch.sum(parts_masks[i]*mask)>0:
                parts_damage_dict[metadata_parts.thing_classes[parts_classes[i]]].append('scratch')
                parts_list_damages.append(f'{metadata_parts.thing_classes[parts_classes[i]]} has scratch')
                print(f'{metadata_parts.thing_classes[parts_classes[i]]} has scratch')
    for mask in merged_damage_masks:
        for i in range(len(parts_masks)):
            if torch.sum(parts_masks[i]*mask)>0:
                parts_damage_dict[metadata_parts.thing_classes[parts_classes[i]]].append('damage')
                parts_list_damages.append(f'{metadata_parts.thing_classes[parts_classes[i]]} has damage')
                print(f'{metadata_parts.thing_classes[parts_classes[i]]} has damage')

    # Define the colors for the scratch and damage masks
    scratch_color = (0, 0, 255)  # red
    damage_color = (0, 255, 255)  # yellow
    # Convert the scratch and damage masks to numpy arrays
    scratch_masks_arr = np.array(scratch_masks)
    damage_masks_arr = np.array(damage_masks)
    # Resize the scratch and damage masks to match the size of the original image
    if len(scratch_masks_arr) > 0:
      scratch_mask_resized = cv2.resize(scratch_masks_arr[0].astype(np.uint8), (img.shape[1], img.shape[0]))
    else:
      scratch_mask_resized = np.zeros((img.shape[0], img.shape[1]), dtype=np.uint8)
    if len(damage_masks_arr) > 0:
      damage_mask_resized = cv2.resize(damage_masks_arr[0].astype(np.uint8), (img.shape[1], img.shape[0]))
    else:
      damage_mask_resized = np.zeros((img.shape[0], img.shape[1]), dtype=np.uint8)
    # Merge the scratch and damage masks into a single binary mask
    merged_mask = np.zeros_like(scratch_mask_resized)
    merged_mask[(scratch_mask_resized> 0) | (damage_mask_resized > 0)] = 255
    # Overlay the merged mask on top of the original image
    overlay = img.copy()
    overlay[merged_mask == 255] = (0, 255, 0)  # green color for the merged mask
    overlay[damage_mask_resized == 255] = damage_color  # yellow color for the damage mask
    #output = cv2.addWeighted(overlay, 0.5, img, 0.5, 0)

    # Merge the instance predictions from both predictors
    image_np = np.array(image)
    height, width, channels = image_np.shape
     
    # Get the predicted boxes from the scratches predictor
    pred_boxes_scratch = outputs_scratch["instances"].pred_boxes.tensor

    # Get the predicted boxes from the damage predictor
    pred_boxes_damage = outputs_damage["instances"].pred_boxes.tensor

    # Concatenate the predicted boxes along the batch dimension
    merged_boxes = torch.cat([pred_boxes_scratch, pred_boxes_damage], dim=0)

    # Create a new Instances object with the merged boxes
    merged_instances = Instances((image_np.shape[0], image_np.shape[1]))
    merged_instances.pred_boxes = Boxes(merged_boxes)
  

    # Visualize the Masks
    v_d = Visualizer(img[:, :, ::-1],
                   metadata=metadata_damage,
                   scale=0.5,
                   instance_mode=ColorMode.SEGMENTATION   # remove the colors of unsegmented pixels. This option is only available for segmentation models
    )
    v_d = Visualizer(img,scale=1.2)
    out_d = v_d.draw_instance_predictions(new_inst)
    img1 = out_d.get_image()[:, :, ::-1]

    v_s = Visualizer(img[:, :, ::-1],
                   metadata=metadata_scratch,
                   scale=0.5,
                   instance_mode=ColorMode.SEGMENTATION   # remove the colors of unsegmented pixels. This option is only available for segmentation models
    )
    v_s = Visualizer(img,scale=1.2)
    out_s = v_s.draw_instance_predictions(outputs_scratch["instances"])
    img2 = out_s.get_image()[:, :, ::-1]

    v_p = Visualizer(img[:, :, ::-1],
                   metadata=metadata_parts,
                   scale=0.5,
                   instance_mode=ColorMode.SEGMENTATION   # remove the colors of unsegmented pixels. This option is only available for segmentation models
    )
    v_p = Visualizer(img,scale=1.2)
    out_p = v_p.draw_instance_predictions(outputs_parts["instances"])
    img3 = out_p.get_image()[:, :, ::-1]

    # Visualize the overlay
    v_m = Visualizer(overlay[:, :, ::-1],
                 metadata=metadata_damage,
                 scale=1.2,
                 instance_mode=ColorMode.SEGMENTATION   # display the overlay in black and white
                )
    # Draw the overlay with instance predictions
    overlay_with_predictions = v_m.draw_instance_predictions(merged_instances.to("cpu")).get_image()[:, :, ::-1]
    #v_m = Visualizer(overlay,scale=1.2)
    out = v_m.draw_instance_predictions(merged_instances)
    output = out.get_image()[:, :, ::-1]




    return img1, img2, img3, parts_list_damages, output


with gr.Blocks() as demo:
    with gr.Row():
        with gr.Column():
            gr.HTML("<h1 style='text-align: center;'>Damage Detection Dashboard</h1>")
            gr.Markdown("## Inputs")
            image = gr.Image(type="pil",label="Input")
            submit_button = gr.Button(value="Submit", label="Submit")
        with gr.Column():
            gr.Markdown("## Outputs")
            with gr.Tab('Image of damages'):
                im1 = gr.Image(type='numpy',label='Image of damages')
            with gr.Tab('Image of scratches'):
                im2 = gr.Image(type='numpy',label='Image of scratches')
            with gr.Tab('Image of parts'):
                im3 = gr.Image(type='numpy',label='Image of car parts')
            with gr.Tab('Information about damaged parts'):
                intersections = gr.Textbox(label='Information about type of damages on each part')
            with gr.Tab('Image of overlayed damage parts'):
                overlayed = gr.Image(type='numpy',label='Image of overlayed damage parts')

    #actions
    submit_button.click(
        fn=inference,
        api_name="predict",
        inputs = [image],
        outputs = [im1,im2,im3,intersections, overlayed]
    )

if __name__ == "__main__":
   demo.launch(show_api=True)