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Added improvements for push ups and added pull ups

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Jon
2026-05-13 15:37:33 +01:00
parent 4c4b9baabd
commit 9cee4ec43f
2 changed files with 122 additions and 32 deletions
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141
main.py
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@@ -5,60 +5,137 @@ import numpy as np
mp_pose = mp.solutions.pose
mp_draw = mp.solutions.drawing_utils
def calculate_angle(a, b, c):
a, b, c = np.array(a), np.array(b), np.array(c)
radians = np.arctan2(c[1]-b[1], c[0]-b[0]) - \
np.arctan2(a[1]-b[1], a[0]-b[0])
radians = np.arctan2(c[1] - b[1], c[0] - b[0]) - np.arctan2(a[1] - b[1], a[0] - b[0])
angle = np.abs(radians * 180.0 / np.pi)
if angle > 180: angle = 360 - angle
if angle > 180:
angle = 360 - angle
return angle
def elbow_angle_and_vis(landmarks, side):
P = mp_pose.PoseLandmark
if side == 'left':
sh, el, wr = P.LEFT_SHOULDER, P.LEFT_ELBOW, P.LEFT_WRIST
else:
sh, el, wr = P.RIGHT_SHOULDER, P.RIGHT_ELBOW, P.RIGHT_WRIST
sh_lm, el_lm, wr_lm = landmarks[sh.value], landmarks[el.value], landmarks[wr.value]
pts = [[sh_lm.x, sh_lm.y], [el_lm.x, el_lm.y], [wr_lm.x, wr_lm.y]]
vis = min(sh_lm.visibility, el_lm.visibility, wr_lm.visibility)
return calculate_angle(*pts), vis
def best_elbow_angle(landmarks):
l_ang, l_vis = elbow_angle_and_vis(landmarks, 'left')
r_ang, r_vis = elbow_angle_and_vis(landmarks, 'right')
if l_vis > 0.5 and r_vis > 0.5:
return (l_ang + r_ang) / 2, max(l_vis, r_vis)
return (l_ang, l_vis) if l_vis >= r_vis else (r_ang, r_vis)
def is_horizontal(landmarks):
"""True when torso is roughly horizontal — filters out standing-upright false triggers."""
P = mp_pose.PoseLandmark
nose_y = landmarks[P.NOSE.value].y
hip_y = (landmarks[P.LEFT_HIP.value].y + landmarks[P.RIGHT_HIP.value].y) / 2
# When standing, nose is well above hips (small y vs large y in image coords).
# When horizontal (push-up), nose and hips are at similar y values.
return abs(nose_y - hip_y) < 0.38
def wrists_above_shoulders(landmarks):
"""True when both (or at least one) wrist is above its shoulder — pull-up hang check."""
P = mp_pose.PoseLandmark
lms = landmarks
margin = 0.05 # must be clearly above, not just noise
l_ok = lms[P.LEFT_WRIST.value].y < lms[P.LEFT_SHOULDER.value].y - margin
r_ok = lms[P.RIGHT_WRIST.value].y < lms[P.RIGHT_SHOULDER.value].y - margin
return l_ok or r_ok
cap = cv2.VideoCapture(0)
count = 0
stage = None # "up" or "down"
stage = None # current rep phase
mode = 'pushup' # 'pushup' | 'pullup'
with mp_pose.Pose(min_detection_confidence=0.5,
min_tracking_confidence=0.5) as pose:
with mp_pose.Pose(min_detection_confidence=0.6, min_tracking_confidence=0.6) as pose:
while cap.isOpened():
ret, frame = cap.read()
if not ret:
break
image = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
image.flags.writeable = False
results = pose.process(image)
image.flags.writeable = True
image = cv2.cvtColor(image, cv2.COLOR_RGB2BGR)
angle_disp = 0
try:
landmarks = results.pose_landmarks.landmark
lms = results.pose_landmarks.landmark
angle, vis = best_elbow_angle(lms)
angle_disp = int(angle)
# Get elbow angle (left side)
shoulder = [landmarks[mp_pose.PoseLandmark.LEFT_SHOULDER.value].x,
landmarks[mp_pose.PoseLandmark.LEFT_SHOULDER.value].y]
elbow = [landmarks[mp_pose.PoseLandmark.LEFT_ELBOW.value].x,
landmarks[mp_pose.PoseLandmark.LEFT_ELBOW.value].y]
wrist = [landmarks[mp_pose.PoseLandmark.LEFT_WRIST.value].x,
landmarks[mp_pose.PoseLandmark.LEFT_WRIST.value].y]
if vis > 0.4:
if mode == 'pushup' and is_horizontal(lms):
if angle > 155:
stage = 'up'
if angle < 85 and stage == 'up':
stage = 'down'
count += 1
angle = calculate_angle(shoulder, elbow, wrist)
# Push up logic
if angle > 160:
stage = "up"
if angle < 90 and stage == "up":
stage = "down"
count += 1
except:
elif mode == 'pullup' and wrists_above_shoulders(lms):
if angle > 155:
stage = 'down' # hanging, arms straight
if angle < 90 and stage == 'down':
stage = 'up' # pulled up
count += 1
except Exception:
pass
# Display
cv2.rectangle(image, (0,0), (220,60), (0,0,0), -1)
cv2.putText(image, f'Reps: {count}', (10,40),
cv2.FONT_HERSHEY_SIMPLEX, 1.2, (0,255,0), 2)
# --- overlay UI ---
h, w = image.shape[:2]
mode_label = 'PUSH-UPS' if mode == 'pushup' else 'PULL-UPS'
mode_color = (50, 220, 100) if mode == 'pushup' else (80, 120, 255)
mp_draw.draw_landmarks(image, results.pose_landmarks,
mp_pose.POSE_CONNECTIONS)
cv2.imshow('Push Up Counter', image)
# top bar
cv2.rectangle(image, (0, 0), (w, 80), (15, 15, 15), -1)
cv2.putText(image, mode_label, (12, 30),
cv2.FONT_HERSHEY_SIMPLEX, 0.85, mode_color, 2)
cv2.putText(image, f'REPS: {count}', (12, 68),
cv2.FONT_HERSHEY_SIMPLEX, 1.3, (0, 255, 0), 3)
if cv2.waitKey(10) & 0xFF == ord('q'):
# angle + stage (top right)
cv2.putText(image, f'{angle_disp}\xb0', (w - 100, 35),
cv2.FONT_HERSHEY_SIMPLEX, 1.0, (0, 220, 220), 2)
cv2.putText(image, (stage or '---').upper(), (w - 108, 68),
cv2.FONT_HERSHEY_SIMPLEX, 0.8, (180, 180, 0), 2)
# bottom hint bar
cv2.rectangle(image, (0, h - 30), (w, h), (15, 15, 15), -1)
cv2.putText(image, '[P] Push-ups [U] Pull-ups [R] Reset [Q] Quit',
(8, h - 8), cv2.FONT_HERSHEY_SIMPLEX, 0.5, (160, 160, 160), 1)
if results.pose_landmarks:
mp_draw.draw_landmarks(image, results.pose_landmarks, mp_pose.POSE_CONNECTIONS)
cv2.imshow('Exercise Counter', image)
key = cv2.waitKey(10) & 0xFF
if key == ord('q'):
break
elif key == ord('p'):
mode = 'pushup'
stage = None
elif key == ord('u'):
mode = 'pullup'
stage = None
elif key == ord('r'):
count = 0
stage = None
cap.release()
cv2.destroyAllWindows()