diff --git a/src/arcaea_offline_ocr/__init__.py b/src/arcaea_offline_ocr/__init__.py
index c227b3c..18c5986 100644
--- a/src/arcaea_offline_ocr/__init__.py
+++ b/src/arcaea_offline_ocr/__init__.py
@@ -1,3 +1,2 @@
 from .crop import *
-from .device import *
 from .utils import *
diff --git a/src/arcaea_offline_ocr/device/__init__.py b/src/arcaea_offline_ocr/device/__init__.py
deleted file mode 100644
index bd6cd44..0000000
--- a/src/arcaea_offline_ocr/device/__init__.py
+++ /dev/null
@@ -1,2 +0,0 @@
-from .common import DeviceOcrResult
-from .ocr import DeviceOcr
diff --git a/src/arcaea_offline_ocr/device/common.py b/src/arcaea_offline_ocr/device/common.py
deleted file mode 100644
index e9bf09a..0000000
--- a/src/arcaea_offline_ocr/device/common.py
+++ /dev/null
@@ -1,17 +0,0 @@
-from dataclasses import dataclass
-from typing import Optional
-
-
-@dataclass
-class DeviceOcrResult:
-    rating_class: int
-    score: int
-    pure: Optional[int] = None
-    far: Optional[int] = None
-    lost: Optional[int] = None
-    max_recall: Optional[int] = None
-    song_id: Optional[str] = None
-    song_id_possibility: Optional[float] = None
-    clear_status: Optional[int] = None
-    partner_id: Optional[str] = None
-    partner_id_possibility: Optional[float] = None
diff --git a/src/arcaea_offline_ocr/device/rois/__init__.py b/src/arcaea_offline_ocr/device/rois/__init__.py
deleted file mode 100644
index e73f32a..0000000
--- a/src/arcaea_offline_ocr/device/rois/__init__.py
+++ /dev/null
@@ -1,3 +0,0 @@
-from .definition import *
-from .extractor import *
-from .masker import *
diff --git a/src/arcaea_offline_ocr/device/rois/definition/__init__.py b/src/arcaea_offline_ocr/device/rois/definition/__init__.py
deleted file mode 100644
index 37f6ef1..0000000
--- a/src/arcaea_offline_ocr/device/rois/definition/__init__.py
+++ /dev/null
@@ -1,2 +0,0 @@
-from .auto import *
-from .common import DeviceRois
diff --git a/src/arcaea_offline_ocr/device/rois/definition/common.py b/src/arcaea_offline_ocr/device/rois/definition/common.py
deleted file mode 100644
index 96512c4..0000000
--- a/src/arcaea_offline_ocr/device/rois/definition/common.py
+++ /dev/null
@@ -1,15 +0,0 @@
-from typing import Tuple
-
-Rect = Tuple[int, int, int, int]
-
-
-class DeviceRois:
-    pure: Rect
-    far: Rect
-    lost: Rect
-    score: Rect
-    rating_class: Rect
-    max_recall: Rect
-    jacket: Rect
-    clear_status: Rect
-    partner_icon: Rect
diff --git a/src/arcaea_offline_ocr/device/rois/definition/custom.py b/src/arcaea_offline_ocr/device/rois/definition/custom.py
deleted file mode 100644
index e69de29..0000000
diff --git a/src/arcaea_offline_ocr/device/rois/extractor/__init__.py b/src/arcaea_offline_ocr/device/rois/extractor/__init__.py
deleted file mode 100644
index 1b6ae1d..0000000
--- a/src/arcaea_offline_ocr/device/rois/extractor/__init__.py
+++ /dev/null
@@ -1 +0,0 @@
-from .common import DeviceRoisExtractor
diff --git a/src/arcaea_offline_ocr/device/rois/extractor/common.py b/src/arcaea_offline_ocr/device/rois/extractor/common.py
deleted file mode 100644
index 671ae2c..0000000
--- a/src/arcaea_offline_ocr/device/rois/extractor/common.py
+++ /dev/null
@@ -1,48 +0,0 @@
-from ....crop import crop_xywh
-from ....types import Mat
-from ..definition.common import DeviceRois
-
-
-class DeviceRoisExtractor:
-    def __init__(self, img: Mat, rois: DeviceRois):
-        self.img = img
-        self.sizes = rois
-
-    def __construct_int_rect(self, rect):
-        return tuple(round(r) for r in rect)
-
-    @property
-    def pure(self):
-        return crop_xywh(self.img, self.__construct_int_rect(self.sizes.pure))
-
-    @property
-    def far(self):
-        return crop_xywh(self.img, self.__construct_int_rect(self.sizes.far))
-
-    @property
-    def lost(self):
-        return crop_xywh(self.img, self.__construct_int_rect(self.sizes.lost))
-
-    @property
-    def score(self):
-        return crop_xywh(self.img, self.__construct_int_rect(self.sizes.score))
-
-    @property
-    def jacket(self):
-        return crop_xywh(self.img, self.__construct_int_rect(self.sizes.jacket))
-
-    @property
-    def rating_class(self):
-        return crop_xywh(self.img, self.__construct_int_rect(self.sizes.rating_class))
-
-    @property
-    def max_recall(self):
-        return crop_xywh(self.img, self.__construct_int_rect(self.sizes.max_recall))
-
-    @property
-    def clear_status(self):
-        return crop_xywh(self.img, self.__construct_int_rect(self.sizes.clear_status))
-
-    @property
-    def partner_icon(self):
-        return crop_xywh(self.img, self.__construct_int_rect(self.sizes.partner_icon))
diff --git a/src/arcaea_offline_ocr/device/rois/masker/__init__.py b/src/arcaea_offline_ocr/device/rois/masker/__init__.py
deleted file mode 100644
index ced796d..0000000
--- a/src/arcaea_offline_ocr/device/rois/masker/__init__.py
+++ /dev/null
@@ -1,2 +0,0 @@
-from .auto import *
-from .common import DeviceRoisMasker
diff --git a/src/arcaea_offline_ocr/device/rois/masker/common.py b/src/arcaea_offline_ocr/device/rois/masker/common.py
deleted file mode 100644
index cc63b88..0000000
--- a/src/arcaea_offline_ocr/device/rois/masker/common.py
+++ /dev/null
@@ -1,59 +0,0 @@
-from ....types import Mat
-
-
-class DeviceRoisMasker:
-    @classmethod
-    def pure(cls, roi_bgr: Mat) -> Mat:
-        raise NotImplementedError()
-
-    @classmethod
-    def far(cls, roi_bgr: Mat) -> Mat:
-        raise NotImplementedError()
-
-    @classmethod
-    def lost(cls, roi_bgr: Mat) -> Mat:
-        raise NotImplementedError()
-
-    @classmethod
-    def score(cls, roi_bgr: Mat) -> Mat:
-        raise NotImplementedError()
-
-    @classmethod
-    def rating_class_pst(cls, roi_bgr: Mat) -> Mat:
-        raise NotImplementedError()
-
-    @classmethod
-    def rating_class_prs(cls, roi_bgr: Mat) -> Mat:
-        raise NotImplementedError()
-
-    @classmethod
-    def rating_class_ftr(cls, roi_bgr: Mat) -> Mat:
-        raise NotImplementedError()
-
-    @classmethod
-    def rating_class_byd(cls, roi_bgr: Mat) -> Mat:
-        raise NotImplementedError()
-
-    @classmethod
-    def rating_class_etr(cls, roi_bgr: Mat) -> Mat:
-        raise NotImplementedError()
-
-    @classmethod
-    def max_recall(cls, roi_bgr: Mat) -> Mat:
-        raise NotImplementedError()
-
-    @classmethod
-    def clear_status_track_lost(cls, roi_bgr: Mat) -> Mat:
-        raise NotImplementedError()
-
-    @classmethod
-    def clear_status_track_complete(cls, roi_bgr: Mat) -> Mat:
-        raise NotImplementedError()
-
-    @classmethod
-    def clear_status_full_recall(cls, roi_bgr: Mat) -> Mat:
-        raise NotImplementedError()
-
-    @classmethod
-    def clear_status_pure_memory(cls, roi_bgr: Mat) -> Mat:
-        raise NotImplementedError()
diff --git a/src/arcaea_offline_ocr/scenarios/device/__init__.py b/src/arcaea_offline_ocr/scenarios/device/__init__.py
new file mode 100644
index 0000000..6ae9efb
--- /dev/null
+++ b/src/arcaea_offline_ocr/scenarios/device/__init__.py
@@ -0,0 +1,13 @@
+from .extractor import DeviceRoisExtractor
+from .impl import DeviceScenario
+from .masker import DeviceRoisMaskerAutoT1, DeviceRoisMaskerAutoT2
+from .rois import DeviceRoisAutoT1, DeviceRoisAutoT2
+
+__all__ = [
+    "DeviceRoisMaskerAutoT1",
+    "DeviceRoisMaskerAutoT2",
+    "DeviceRoisAutoT1",
+    "DeviceRoisAutoT2",
+    "DeviceRoisExtractor",
+    "DeviceScenario",
+]
diff --git a/src/arcaea_offline_ocr/scenarios/device/extractor/__init__.py b/src/arcaea_offline_ocr/scenarios/device/extractor/__init__.py
new file mode 100644
index 0000000..976a9d9
--- /dev/null
+++ b/src/arcaea_offline_ocr/scenarios/device/extractor/__init__.py
@@ -0,0 +1,3 @@
+from .base import DeviceRoisExtractor
+
+__all__ = ["DeviceRoisExtractor"]
diff --git a/src/arcaea_offline_ocr/scenarios/device/extractor/base.py b/src/arcaea_offline_ocr/scenarios/device/extractor/base.py
new file mode 100644
index 0000000..6705d8c
--- /dev/null
+++ b/src/arcaea_offline_ocr/scenarios/device/extractor/base.py
@@ -0,0 +1,46 @@
+from arcaea_offline_ocr.crop import crop_xywh
+from arcaea_offline_ocr.types import Mat
+
+from ..rois.base import DeviceRois
+
+
+class DeviceRoisExtractor:
+    def __init__(self, img: Mat, rois: DeviceRois):
+        self.img = img
+        self.sizes = rois
+
+    @property
+    def pure(self):
+        return crop_xywh(self.img, self.sizes.pure.rounded())
+
+    @property
+    def far(self):
+        return crop_xywh(self.img, self.sizes.far.rounded())
+
+    @property
+    def lost(self):
+        return crop_xywh(self.img, self.sizes.lost.rounded())
+
+    @property
+    def score(self):
+        return crop_xywh(self.img, self.sizes.score.rounded())
+
+    @property
+    def jacket(self):
+        return crop_xywh(self.img, self.sizes.jacket.rounded())
+
+    @property
+    def rating_class(self):
+        return crop_xywh(self.img, self.sizes.rating_class.rounded())
+
+    @property
+    def max_recall(self):
+        return crop_xywh(self.img, self.sizes.max_recall.rounded())
+
+    @property
+    def clear_status(self):
+        return crop_xywh(self.img, self.sizes.clear_status.rounded())
+
+    @property
+    def partner_icon(self):
+        return crop_xywh(self.img, self.sizes.partner_icon.rounded())
diff --git a/src/arcaea_offline_ocr/device/ocr.py b/src/arcaea_offline_ocr/scenarios/device/impl.py
similarity index 79%
rename from src/arcaea_offline_ocr/device/ocr.py
rename to src/arcaea_offline_ocr/scenarios/device/impl.py
index 1c58838..0ace970 100644
--- a/src/arcaea_offline_ocr/device/ocr.py
+++ b/src/arcaea_offline_ocr/scenarios/device/impl.py
@@ -1,26 +1,31 @@
 import cv2
 import numpy as np
 
-from ..phash_db import ImagePhashDatabase
-from ..providers.knn import OcrKNearestTextProvider
-from ..types import Mat
-from .common import DeviceOcrResult
-from .rois.extractor import DeviceRoisExtractor
-from .rois.masker import DeviceRoisMasker
+from arcaea_offline_ocr.providers import (
+    ImageCategory,
+    ImageIdProvider,
+    OcrKNearestTextProvider,
+)
+from arcaea_offline_ocr.scenarios.base import OcrScenarioResult
+from arcaea_offline_ocr.types import Mat
+
+from .base import DeviceScenarioBase
+from .extractor import DeviceRoisExtractor
+from .masker import DeviceRoisMasker
 
 
-class DeviceOcr:
+class DeviceScenario(DeviceScenarioBase):
     def __init__(
         self,
         extractor: DeviceRoisExtractor,
         masker: DeviceRoisMasker,
         knn_provider: OcrKNearestTextProvider,
-        phash_db: ImagePhashDatabase,
+        image_id_provider: ImageIdProvider,
     ):
         self.extractor = extractor
         self.masker = masker
         self.knn_provider = knn_provider
-        self.phash_db = phash_db
+        self.image_id_provider = image_id_provider
 
     def pfl(self, roi_gray: Mat, factor: float = 1.25):
         def contour_filter(cnt):
@@ -93,14 +98,12 @@ class DeviceOcr:
         ]
         return max(enumerate(results), key=lambda i: np.count_nonzero(i[1]))[0]
 
-    def lookup_song_id(self):
-        return self.phash_db.lookup_jacket(
-            cv2.cvtColor(self.extractor.jacket, cv2.COLOR_BGR2GRAY)
+    def song_id_results(self):
+        return self.image_id_provider.results(
+            cv2.cvtColor(self.extractor.jacket, cv2.COLOR_BGR2GRAY),
+            ImageCategory.JACKET,
         )
 
-    def song_id(self):
-        return self.lookup_song_id()[0]
-
     @staticmethod
     def preprocess_char_icon(img_gray: Mat):
         h, w = img_gray.shape[:2]
@@ -114,21 +117,19 @@ class DeviceOcr:
                 np.array([[0, h], [round(w / 2), h], [0, round(h / 2)]], np.int32),
                 np.array([[w, h], [round(w / 2), h], [w, round(h / 2)]], np.int32),
             ],
-            (128),
+            (128,),
         )
         return img
 
-    def lookup_partner_id(self):
-        return self.phash_db.lookup_partner_icon(
+    def partner_id_results(self):
+        return self.image_id_provider.results(
             self.preprocess_char_icon(
                 cv2.cvtColor(self.extractor.partner_icon, cv2.COLOR_BGR2GRAY)
-            )
+            ),
+            ImageCategory.PARTNER_ICON,
         )
 
-    def partner_id(self):
-        return self.lookup_partner_id()[0]
-
-    def ocr(self) -> DeviceOcrResult:
+    def result(self):
         rating_class = self.rating_class()
         pure = self.pure()
         far = self.far()
@@ -137,20 +138,18 @@ class DeviceOcr:
         max_recall = self.max_recall()
         clear_status = self.clear_status()
 
-        hash_len = self.phash_db.hash_size**2
-        song_id, song_id_distance = self.lookup_song_id()
-        partner_id, partner_id_distance = self.lookup_partner_id()
+        song_id_results = self.song_id_results()
+        partner_id_results = self.partner_id_results()
 
-        return DeviceOcrResult(
+        return OcrScenarioResult(
+            song_id=song_id_results[0].image_id,
+            song_id_results=song_id_results,
             rating_class=rating_class,
             pure=pure,
             far=far,
             lost=lost,
             score=score,
             max_recall=max_recall,
-            song_id=song_id,
-            song_id_possibility=1 - song_id_distance / hash_len,
+            partner_id_results=partner_id_results,
             clear_status=clear_status,
-            partner_id=partner_id,
-            partner_id_possibility=1 - partner_id_distance / hash_len,
         )
diff --git a/src/arcaea_offline_ocr/scenarios/device/masker/__init__.py b/src/arcaea_offline_ocr/scenarios/device/masker/__init__.py
new file mode 100644
index 0000000..e19d62e
--- /dev/null
+++ b/src/arcaea_offline_ocr/scenarios/device/masker/__init__.py
@@ -0,0 +1,9 @@
+from .auto import DeviceRoisMaskerAuto, DeviceRoisMaskerAutoT1, DeviceRoisMaskerAutoT2
+from .base import DeviceRoisMasker
+
+__all__ = [
+    "DeviceRoisMaskerAuto",
+    "DeviceRoisMaskerAutoT1",
+    "DeviceRoisMaskerAutoT2",
+    "DeviceRoisMasker",
+]
diff --git a/src/arcaea_offline_ocr/device/rois/masker/auto.py b/src/arcaea_offline_ocr/scenarios/device/masker/auto.py
similarity index 98%
rename from src/arcaea_offline_ocr/device/rois/masker/auto.py
rename to src/arcaea_offline_ocr/scenarios/device/masker/auto.py
index bfef5ab..04ace51 100644
--- a/src/arcaea_offline_ocr/device/rois/masker/auto.py
+++ b/src/arcaea_offline_ocr/scenarios/device/masker/auto.py
@@ -1,13 +1,12 @@
 import cv2
 import numpy as np
 
-from ....types import Mat
-from .common import DeviceRoisMasker
+from arcaea_offline_ocr.types import Mat
+
+from .base import DeviceRoisMasker
 
 
 class DeviceRoisMaskerAuto(DeviceRoisMasker):
-    # pylint: disable=abstract-method
-
     @staticmethod
     def mask_bgr_in_hsv(roi_bgr: Mat, hsv_lower: Mat, hsv_upper: Mat):
         return cv2.inRange(
diff --git a/src/arcaea_offline_ocr/scenarios/device/masker/base.py b/src/arcaea_offline_ocr/scenarios/device/masker/base.py
new file mode 100644
index 0000000..fa44f54
--- /dev/null
+++ b/src/arcaea_offline_ocr/scenarios/device/masker/base.py
@@ -0,0 +1,61 @@
+from abc import ABC, abstractmethod
+
+from arcaea_offline_ocr.types import Mat
+
+
+class DeviceRoisMasker(ABC):
+    @classmethod
+    @abstractmethod
+    def pure(cls, roi_bgr: Mat) -> Mat: ...
+
+    @classmethod
+    @abstractmethod
+    def far(cls, roi_bgr: Mat) -> Mat: ...
+
+    @classmethod
+    @abstractmethod
+    def lost(cls, roi_bgr: Mat) -> Mat: ...
+
+    @classmethod
+    @abstractmethod
+    def score(cls, roi_bgr: Mat) -> Mat: ...
+
+    @classmethod
+    @abstractmethod
+    def rating_class_pst(cls, roi_bgr: Mat) -> Mat: ...
+
+    @classmethod
+    @abstractmethod
+    def rating_class_prs(cls, roi_bgr: Mat) -> Mat: ...
+
+    @classmethod
+    @abstractmethod
+    def rating_class_ftr(cls, roi_bgr: Mat) -> Mat: ...
+
+    @classmethod
+    @abstractmethod
+    def rating_class_byd(cls, roi_bgr: Mat) -> Mat: ...
+
+    @classmethod
+    @abstractmethod
+    def rating_class_etr(cls, roi_bgr: Mat) -> Mat: ...
+
+    @classmethod
+    @abstractmethod
+    def max_recall(cls, roi_bgr: Mat) -> Mat: ...
+
+    @classmethod
+    @abstractmethod
+    def clear_status_track_lost(cls, roi_bgr: Mat) -> Mat: ...
+
+    @classmethod
+    @abstractmethod
+    def clear_status_track_complete(cls, roi_bgr: Mat) -> Mat: ...
+
+    @classmethod
+    @abstractmethod
+    def clear_status_full_recall(cls, roi_bgr: Mat) -> Mat: ...
+
+    @classmethod
+    @abstractmethod
+    def clear_status_pure_memory(cls, roi_bgr: Mat) -> Mat: ...
diff --git a/src/arcaea_offline_ocr/scenarios/device/rois/__init__.py b/src/arcaea_offline_ocr/scenarios/device/rois/__init__.py
new file mode 100644
index 0000000..07c7782
--- /dev/null
+++ b/src/arcaea_offline_ocr/scenarios/device/rois/__init__.py
@@ -0,0 +1,9 @@
+from .auto import DeviceRoisAuto, DeviceRoisAutoT1, DeviceRoisAutoT2
+from .base import DeviceRois
+
+__all__ = [
+    "DeviceRois",
+    "DeviceRoisAuto",
+    "DeviceRoisAutoT1",
+    "DeviceRoisAutoT2",
+]
diff --git a/src/arcaea_offline_ocr/device/rois/definition/auto.py b/src/arcaea_offline_ocr/scenarios/device/rois/auto.py
similarity index 89%
rename from src/arcaea_offline_ocr/device/rois/definition/auto.py
rename to src/arcaea_offline_ocr/scenarios/device/rois/auto.py
index 0a8eaa2..643e3db 100644
--- a/src/arcaea_offline_ocr/device/rois/definition/auto.py
+++ b/src/arcaea_offline_ocr/scenarios/device/rois/auto.py
@@ -1,6 +1,6 @@
-from .common import DeviceRois
+from arcaea_offline_ocr.types import XYWHRect
 
-__all__ = ["DeviceRoisAuto", "DeviceRoisAutoT1", "DeviceRoisAutoT2"]
+from .base import DeviceRois
 
 
 class DeviceRoisAuto(DeviceRois):
@@ -50,7 +50,7 @@ class DeviceRoisAutoT1(DeviceRoisAuto):
 
     @property
     def pure(self):
-        return (
+        return XYWHRect(
             self.pfl_x,
             self.layout_area_h_mid + 110 * self.factor,
             self.pfl_w,
@@ -59,7 +59,7 @@ class DeviceRoisAutoT1(DeviceRoisAuto):
 
     @property
     def far(self):
-        return (
+        return XYWHRect(
             self.pfl_x,
             self.pure[1] + self.pure[3] + 12 * self.factor,
             self.pfl_w,
@@ -68,7 +68,7 @@ class DeviceRoisAutoT1(DeviceRoisAuto):
 
     @property
     def lost(self):
-        return (
+        return XYWHRect(
             self.pfl_x,
             self.far[1] + self.far[3] + 10 * self.factor,
             self.pfl_w,
@@ -79,7 +79,7 @@ class DeviceRoisAutoT1(DeviceRoisAuto):
     def score(self):
         w = 280 * self.factor
         h = 45 * self.factor
-        return (
+        return XYWHRect(
             self.w_mid - w / 2,
             self.layout_area_h_mid - 75 * self.factor - h,
             w,
@@ -88,7 +88,7 @@ class DeviceRoisAutoT1(DeviceRoisAuto):
 
     @property
     def rating_class(self):
-        return (
+        return XYWHRect(
             self.w_mid - 610 * self.factor,
             self.layout_area_h_mid - 180 * self.factor,
             265 * self.factor,
@@ -97,7 +97,7 @@ class DeviceRoisAutoT1(DeviceRoisAuto):
 
     @property
     def max_recall(self):
-        return (
+        return XYWHRect(
             self.w_mid - 465 * self.factor,
             self.layout_area_h_mid - 215 * self.factor,
             150 * self.factor,
@@ -106,7 +106,7 @@ class DeviceRoisAutoT1(DeviceRoisAuto):
 
     @property
     def jacket(self):
-        return (
+        return XYWHRect(
             self.w_mid - 610 * self.factor,
             self.layout_area_h_mid - 143 * self.factor,
             375 * self.factor,
@@ -117,7 +117,7 @@ class DeviceRoisAutoT1(DeviceRoisAuto):
     def clear_status(self):
         w = 550 * self.factor
         h = 60 * self.factor
-        return (
+        return XYWHRect(
             self.w_mid - w / 2,
             self.layout_area_h_mid - 155 * self.factor - h,
             w * 0.4,
@@ -128,7 +128,7 @@ class DeviceRoisAutoT1(DeviceRoisAuto):
     def partner_icon(self):
         w = 90 * self.factor
         h = 75 * self.factor
-        return (self.w_mid - w / 2, 0, w, h)
+        return XYWHRect(self.w_mid - w / 2, 0, w, h)
 
 
 class DeviceRoisAutoT2(DeviceRoisAuto):
@@ -174,7 +174,7 @@ class DeviceRoisAutoT2(DeviceRoisAuto):
 
     @property
     def pure(self):
-        return (
+        return XYWHRect(
             self.pfl_x,
             self.layout_area_h_mid + 175 * self.factor,
             self.pfl_w,
@@ -183,7 +183,7 @@ class DeviceRoisAutoT2(DeviceRoisAuto):
 
     @property
     def far(self):
-        return (
+        return XYWHRect(
             self.pfl_x,
             self.pure[1] + self.pure[3] + 30 * self.factor,
             self.pfl_w,
@@ -192,7 +192,7 @@ class DeviceRoisAutoT2(DeviceRoisAuto):
 
     @property
     def lost(self):
-        return (
+        return XYWHRect(
             self.pfl_x,
             self.far[1] + self.far[3] + 35 * self.factor,
             self.pfl_w,
@@ -203,7 +203,7 @@ class DeviceRoisAutoT2(DeviceRoisAuto):
     def score(self):
         w = 420 * self.factor
         h = 70 * self.factor
-        return (
+        return XYWHRect(
             self.w_mid - w / 2,
             self.layout_area_h_mid - 110 * self.factor - h,
             w,
@@ -212,7 +212,7 @@ class DeviceRoisAutoT2(DeviceRoisAuto):
 
     @property
     def rating_class(self):
-        return (
+        return XYWHRect(
             max(0, self.w_mid - 965 * self.factor),
             self.layout_area_h_mid - 330 * self.factor,
             350 * self.factor,
@@ -221,7 +221,7 @@ class DeviceRoisAutoT2(DeviceRoisAuto):
 
     @property
     def max_recall(self):
-        return (
+        return XYWHRect(
             self.w_mid - 625 * self.factor,
             self.layout_area_h_mid - 275 * self.factor,
             150 * self.factor,
@@ -230,7 +230,7 @@ class DeviceRoisAutoT2(DeviceRoisAuto):
 
     @property
     def jacket(self):
-        return (
+        return XYWHRect(
             self.w_mid - 915 * self.factor,
             self.layout_area_h_mid - 215 * self.factor,
             565 * self.factor,
@@ -241,7 +241,7 @@ class DeviceRoisAutoT2(DeviceRoisAuto):
     def clear_status(self):
         w = 825 * self.factor
         h = 90 * self.factor
-        return (
+        return XYWHRect(
             self.w_mid - w / 2,
             self.layout_area_h_mid - 235 * self.factor - h,
             w * 0.4,
@@ -252,4 +252,4 @@ class DeviceRoisAutoT2(DeviceRoisAuto):
     def partner_icon(self):
         w = 135 * self.factor
         h = 110 * self.factor
-        return (self.w_mid - w / 2, 0, w, h)
+        return XYWHRect(self.w_mid - w / 2, 0, w, h)
diff --git a/src/arcaea_offline_ocr/scenarios/device/rois/base.py b/src/arcaea_offline_ocr/scenarios/device/rois/base.py
new file mode 100644
index 0000000..149e6f0
--- /dev/null
+++ b/src/arcaea_offline_ocr/scenarios/device/rois/base.py
@@ -0,0 +1,33 @@
+from abc import ABC, abstractmethod
+
+from arcaea_offline_ocr.types import XYWHRect
+
+
+class DeviceRois(ABC):
+    @property
+    @abstractmethod
+    def pure(self) -> XYWHRect: ...
+    @property
+    @abstractmethod
+    def far(self) -> XYWHRect: ...
+    @property
+    @abstractmethod
+    def lost(self) -> XYWHRect: ...
+    @property
+    @abstractmethod
+    def score(self) -> XYWHRect: ...
+    @property
+    @abstractmethod
+    def rating_class(self) -> XYWHRect: ...
+    @property
+    @abstractmethod
+    def max_recall(self) -> XYWHRect: ...
+    @property
+    @abstractmethod
+    def jacket(self) -> XYWHRect: ...
+    @property
+    @abstractmethod
+    def clear_status(self) -> XYWHRect: ...
+    @property
+    @abstractmethod
+    def partner_icon(self) -> XYWHRect: ...