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__init__.py

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+import cv2
+import mediapipe as mp
+
+class FindHands():
+    def __init__(self, detection_con=0.5, tracking_con=0.5):
+        self.mpHands = mp.solutions.mediapipe.python.solutions.hands
+        self.hands = self.mpHands.Hands(min_detection_confidence=detection_con, min_tracking_confidence=tracking_con)
+        self.mpDraw = mp.solutions.mediapipe.python.solutions.drawing_utils
+
+    def getPosition(self, img, indexes, hand_no=0, draw=True):
+        lst = []
+        imgRGB = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
+        results = self.hands.process(imgRGB)
+        if results.multi_hand_landmarks:
+            if len(results.multi_hand_landmarks) >= hand_no+1:
+                for id, lm in enumerate(results.multi_hand_landmarks[hand_no].landmark):
+                    for index in indexes:
+                        if id == index:
+                            h, w, c = img.shape
+                            x, y = int(lm.x*w), int(lm.y*h)
+                            lst.append((x,y))
+                if draw:
+                    self.mpDraw.draw_landmarks(img, results.multi_hand_landmarks[hand_no], self.mpHands.HAND_CONNECTIONS)
+        return lst
+
+    def index_finger_up(self, img, hand_no=0):
+        pos = self.getPosition(img, (6,8), draw=False)
+        try:
+            if pos[0][1] >= pos[1][1]:
+                return True
+            elif pos[0][1] < pos[1][1]:
+                return False
+        except:
+            return "NO HAND FOUND"
+
+    def middle_finger_up(self, img, hand_no=0):
+        pos = self.getPosition(img, (10,12), draw=False)
+        try:
+            if pos[0][1] >= pos[1][1]:
+                return True
+            elif pos[0][1] < pos[1][1]:
+                return False
+        except:
+            return "NO HAND FOUND"
+
+    def ring_finger_up(self, img, hand_no=0):
+        pos = self.getPosition(img, (14,16), draw=False)
+        try:
+            if pos[0][1] >= pos[1][1]:
+                return True
+            elif pos[0][1] < pos[1][1]:
+                return False
+        except:
+            return "NO HAND FOUND"
+
+    def little_finger_up(self, img, hand_no=0):
+        pos = self.getPosition(img, (18,20), draw=False)
+        try:
+            if pos[0][1] >= pos[1][1]:
+                return True
+            elif pos[0][1] < pos[1][1]:
+                return False
+        except:
+            return "NO HAND FOUND"
+
+
+if __name__ == "__main__":
+    cap = cv2.VideoCapture(0)
+    hands = FindHands()
+    while True:
+        succeed, img = cap.read()
+        lst = hands.getPosition(img, 8)
+        for pt in lst:
+            cv2.circle(img, pt, 5, (0,255,0), cv2.FILLED)
+        cv2.imshow("Image", img)
+        if cv2.waitKey(10) == ord("q"):
+            break