update readme and eval

toy_datasets/coco/pano_ca_inst/coco_train_image_panoptic_inst.json

+[{"image_path": "coco/pano_ca_inst/train_org/000000039438_image_train_org.png", "target_path": "coco/pano_ca_inst/train_org/000000039438_label_train_org.png", "type": "coco_image2panoptic_inst"}, {"image_path": "coco/pano_ca_inst/train_org/000000090501_image_train_org.png", "target_path": "coco/pano_ca_inst/train_org/000000090501_label_train_org.png", "type": "coco_image2panoptic_inst"}, {"image_path": "coco/pano_ca_inst/train_org/000000084890_image_train_org.png", "target_path": "coco/pano_ca_inst/train_org/000000084890_label_train_org.png", "type": "coco_image2panoptic_inst"}, {"image_path": "coco/pano_ca_inst/train_org/000000425288_image_train_org.png", "target_path": "coco/pano_ca_inst/train_org/000000425288_label_train_org.png", "type": "coco_image2panoptic_inst"}, {"image_path": "coco/pano_ca_inst/train_org/000000212438_image_train_org.png", "target_path": "coco/pano_ca_inst/train_org/000000212438_label_train_org.png", "type": "coco_image2panoptic_inst"}, {"image_path": "coco/pano_ca_inst/train_org/000000217864_image_train_org.png", "target_path": "coco/pano_ca_inst/train_org/000000217864_label_train_org.png", "type": "coco_image2panoptic_inst"}, {"image_path": "coco/pano_ca_inst/train_org/000000187465_image_train_org.png", "target_path": "coco/pano_ca_inst/train_org/000000187465_label_train_org.png", "type": "coco_image2panoptic_inst"}, {"image_path": "coco/pano_ca_inst/train_org/000000391394_image_train_org.png", "target_path": "coco/pano_ca_inst/train_org/000000391394_label_train_org.png", "type": "coco_image2panoptic_inst"}, {"image_path": "coco/pano_ca_inst/train_org/000000235090_image_train_org.png", "target_path": "coco/pano_ca_inst/train_org/000000235090_label_train_org.png", "type": "coco_image2panoptic_inst"}, {"image_path": "coco/pano_ca_inst/train_org/000000387255_image_train_org.png", "target_path": "coco/pano_ca_inst/train_org/000000387255_label_train_org.png", "type": "coco_image2panoptic_inst"}]
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toy_datasets/coco/pano_ca_inst/coco_val_image_panoptic_inst.json

+[{"image_path": "coco/pano_ca_inst/val_org/000000116825_image_val_org.png", "target_path": "coco/pano_ca_inst/val_org/000000116825_label_val_org.png", "type": "coco_image2panoptic_inst"}, {"image_path": "coco/pano_ca_inst/val_org/000000273715_image_val_org.png", "target_path": "coco/pano_ca_inst/val_org/000000273715_label_val_org.png", "type": "coco_image2panoptic_inst"}, {"image_path": "coco/pano_ca_inst/val_org/000000468245_image_val_org.png", "target_path": "coco/pano_ca_inst/val_org/000000468245_label_val_org.png", "type": "coco_image2panoptic_inst"}, {"image_path": "coco/pano_ca_inst/val_org/000000576031_image_val_org.png", "target_path": "coco/pano_ca_inst/val_org/000000576031_label_val_org.png", "type": "coco_image2panoptic_inst"}, {"image_path": "coco/pano_ca_inst/val_org/000000086220_image_val_org.png", "target_path": "coco/pano_ca_inst/val_org/000000086220_label_val_org.png", "type": "coco_image2panoptic_inst"}, {"image_path": "coco/pano_ca_inst/val_org/000000440475_image_val_org.png", "target_path": "coco/pano_ca_inst/val_org/000000440475_label_val_org.png", "type": "coco_image2panoptic_inst"}, {"image_path": "coco/pano_ca_inst/val_org/000000243344_image_val_org.png", "target_path": "coco/pano_ca_inst/val_org/000000243344_label_val_org.png", "type": "coco_image2panoptic_inst"}, {"image_path": "coco/pano_ca_inst/val_org/000000575970_image_val_org.png", "target_path": "coco/pano_ca_inst/val_org/000000575970_label_val_org.png", "type": "coco_image2panoptic_inst"}, {"image_path": "coco/pano_ca_inst/val_org/000000035279_image_val_org.png", "target_path": "coco/pano_ca_inst/val_org/000000035279_label_val_org.png", "type": "coco_image2panoptic_inst"}, {"image_path": "coco/pano_ca_inst/val_org/000000475387_image_val_org.png", "target_path": "coco/pano_ca_inst/val_org/000000475387_label_val_org.png", "type": "coco_image2panoptic_inst"}]
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