This commit is contained in:
DuOtto
2025-07-17 21:54:45 +02:00
parent 93d46923a5
commit 1d63671fad
21 changed files with 513 additions and 412 deletions
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import cv2
import mediapipe as mp
import numpy as np
import cv2, numpy as np, time, fitz
from calibration import object_calibration, draw_cal_circle
from hand_detection import detect_hands, check_hand
from helper import compute_distance
from hud import find_hud_placement, draw_hud
import math
# ----- Helper Functions -----
def compute_distance(p1, p2):
return np.hypot(p2[0] - p1[0], p2[1] - p1[1])
from config import CAMERA_INDICES, FRAME_WIDTH, FRAME_HEIGHT, PIXELS_PER_INCH, CIRCLE_TOUCH_THRESHOLD
from config import DEBUG
# ----- Configuration -----
CAMERA_INDICES = [0] # List of camera device indices
FRAME_WIDTH = 1280
FRAME_HEIGHT = 720
PIXELS_PER_INCH = 20 # will be set by calibration
PINCH_THRESHOLD = 40 # px to start touch
RELEASE_THRESHOLD = 60 # px to end touch
CIRCLE_TOUCH_THRESHOLD = 20 # px tolerance for circle touch
from hud import draw_hud_box, draw_pdf_page
# ----- Initialize Hand Detector -----
mp_hands = mp.solutions.hands
mp_draw = mp.solutions.drawing_utils
hands = mp_hands.Hands(
static_image_mode=False,
max_num_hands=1,
min_detection_confidence=0.7,
min_tracking_confidence=0.5
)
# ----- Global State -----
measuring = False # measurement in progress
start_pt = None # measurement start point
calibrating = False # pinch-based calibration flag
cal_start = None # pinch calibration start point
object_calibrating = False # object calibration flag
cal_circle = None # reference circle (x,y,r)
fingertip_idx_global = None # last detected fingertip position
hud_pos = None
hud_rot = None
register_hud = False
# ----- Per-camera Processing -----
def process_frame(frame):
global measuring, start_pt, calibrating, cal_start, object_calibrating, cal_circle, PIXELS_PER_INCH, fingertip_idx_global
global measuring, start_pt, calibrating
global object_calibrating
global fingertip_idx_global
global register_hud, hud_pos, hud_rot
frame_out = cv2.flip(frame, 1)
h, w, _ = frame_out.shape
frame_vis = frame_out.copy()
projection_debug = frame_out.copy()
# Hand detection
rgb = cv2.cvtColor(frame_out, cv2.COLOR_BGR2RGB)
rgb.flags.writeable = False
results = hands.process(rgb)
rgb.flags.writeable = True
frame_vis = cv2.cvtColor(rgb, cv2.COLOR_RGB2BGR)
results = detect_hands(frame_out)
fingertip_idx = None
fingertip_mid = None
if results.multi_hand_landmarks:
hand = results.multi_hand_landmarks[0]
mp_draw.draw_landmarks(frame_vis, hand, mp_hands.HAND_CONNECTIONS)
# get index and middle finger tips and PIP joints
idx_tip = hand.landmark[mp_hands.HandLandmark.INDEX_FINGER_TIP]
idx_pip = hand.landmark[mp_hands.HandLandmark.INDEX_FINGER_PIP]
mid_tip = hand.landmark[mp_hands.HandLandmark.MIDDLE_FINGER_TIP]
mid_pip = hand.landmark[mp_hands.HandLandmark.MIDDLE_FINGER_PIP]
ix, iy = int(idx_tip.x * w), int(idx_tip.y * h)
mx, my = int(mid_tip.x * w), int(mid_tip.y * h)
fingertip_idx = (ix, iy)
fingertip_mid = (mx, my)
fingertip_idx_global = fingertip_idx
# draw fingertips
cv2.circle(frame_vis, fingertip_idx, 8, (0,255,0), -1)
cv2.circle(frame_vis, fingertip_mid, 8, (0,255,0), -1)
# check extension
index_ext = idx_tip.y < idx_pip.y
middle_ext = mid_tip.y < mid_pip.y
# if measurement in progress but fingers no longer both extended, stop measuring
if measuring and not (index_ext and middle_ext):
measuring = False
# pinch distance
pinch = compute_distance(fingertip_idx, fingertip_mid)
cv2.putText(frame_vis, f"Pinch: {int(pinch)} px", (10,30), cv2.FONT_HERSHEY_SIMPLEX, 0.6, (0,255,0),2)
# pinch calibration
if calibrating:
if pinch < PINCH_THRESHOLD and cal_start is None:
cal_start = fingertip_idx
print("Pinch calibration start set")
elif pinch > RELEASE_THRESHOLD and cal_start is not None:
cal_end = fingertip_idx
px = compute_distance(cal_start, cal_end)
inches = float(input("Enter actual distance between points (inches): "))
PIXELS_PER_INCH = px / inches
print(f"Calibrated: {PIXELS_PER_INCH:.2f} px/inch")
calibrating = False
cal_start = None
# measurement gesture
elif not object_calibrating and index_ext and middle_ext:
if pinch < PINCH_THRESHOLD and not measuring:
measuring = True
start_pt = fingertip_idx
elif pinch > RELEASE_THRESHOLD and measuring:
measuring = False
fingertip_idx, measuring, start_pt = check_hand(hand, frame_vis, object_calibrating)
fingertip_idx_global = fingertip_idx
# object calibration
if object_calibrating and fingertip_idx is not None:
hsv = cv2.cvtColor(frame_vis, cv2.COLOR_BGR2HSV)
mask = cv2.inRange(hsv, np.array([10,100,100]), np.array([25,255,255]))
masked = cv2.bitwise_and(frame_vis, frame_vis, mask=mask)
gray = cv2.cvtColor(masked, cv2.COLOR_BGR2GRAY)
gray = cv2.medianBlur(gray,5)
circles = cv2.HoughCircles(gray, cv2.HOUGH_GRADIENT, 1.2, 100,
param1=50, param2=30, minRadius=10, maxRadius=300)
if circles is not None:
circles = np.round(circles[0]).astype(int)
touched = [(x,y,r) for x,y,r in circles
if abs(compute_distance((x,y), fingertip_idx)-r) < CIRCLE_TOUCH_THRESHOLD]
if touched:
touched.sort(key=lambda c: abs(compute_distance((c[0],c[1]), fingertip_idx)-c[2]))
x,y,r = touched[0]
cal_circle = (x,y,r)
PIXELS_PER_INCH = 2 * r
print(f"Circle calib: {PIXELS_PER_INCH:.2f} px/inch")
object_calibrating = False
object_calibration(frame_vis, fingertip_idx, CIRCLE_TOUCH_THRESHOLD)
object_calibrating = False
# permanent reference circle
if cal_circle:
cx,cy,cr = cal_circle
cv2.circle(frame_vis,(cx,cy),cr,(0,0,255),2)
cv2.drawMarker(frame_vis,(cx,cy),(0,0,255),cv2.MARKER_TILTED_CROSS,15,1)
cv2.putText(frame_vis,f"Ref r={cr} px",(cx-cr,cy+cr+20),cv2.FONT_HERSHEY_SIMPLEX,0.5,(0,0,255),1)
res = None
if hud_pos is None:
res = find_hud_placement(frame_vis)
else:
res = hud_pos, hud_rot
if res is not None:
arrow_tip, dir_vec = res
draw_hud(frame_vis, arrow_tip, dir_vec)
dx, dy = dir_vec
arrow_angle = math.atan2(dy, dx) # result in radians
quad = draw_hud_box(frame_vis, arrow_tip, arrow_angle, size=(400,400))
draw_pdf_page(frame_vis, page_index=0, dst_quad=quad)
if register_hud:
hud_pos = arrow_tip
hud_rot = dir_vec
register_hud = False
return frame_vis
# ----- Main -----
# ----- Main ----- -------------------------------------------------------------------------------------
def main():
caps = []
global register_hud, hud_pos, hud_rot
all_captures = []
for idx in CAMERA_INDICES:
cap = cv2.VideoCapture(idx)
cap.set(cv2.CAP_PROP_FRAME_WIDTH, FRAME_WIDTH)
cap.set(cv2.CAP_PROP_FRAME_HEIGHT, FRAME_HEIGHT)
caps.append(cap)
if not all(cap.isOpened() for cap in caps):
capture = cv2.VideoCapture(idx)
capture.set(cv2.CAP_PROP_FRAME_WIDTH, FRAME_WIDTH)
capture.set(cv2.CAP_PROP_FRAME_HEIGHT, FRAME_HEIGHT)
all_captures.append(capture)
if not all(capture.isOpened() for capture in all_captures):
print("Error: could not open all cameras")
return
print("Press 'c' for pinch calib, 'o' for circle calib, 'q' to quit.")
print("Press 'o' for circle calib, 'q' to quit.")
while True:
frames = [cap.read()[1] for cap in caps]
frames = [capture.read()[1] for capture in all_captures]
frame = next((f for f in frames if f is not None), None)
if frame is None:
break
# process
full_view = process_frame(frame)
# create proj output
proj = np.zeros_like(full_view)
if cal_circle:
cx,cy,cr = cal_circle
cv2.circle(proj,(cx,cy),cr,(0,0,255),2)
projection_out = np.zeros_like(full_view)
if measuring and start_pt and fingertip_idx_global:
cv2.line(proj, start_pt, fingertip_idx_global, (255,0,0),2)
cv2.line(projection_out, start_pt, fingertip_idx_global, (255,0,0),2)
px = compute_distance(start_pt, fingertip_idx_global)
inch = px/PIXELS_PER_INCH; cm = inch*2.54
mid = ((start_pt[0]+fingertip_idx_global[0])//2,(start_pt[1]+fingertip_idx_global[1])//2)
cv2.putText(proj,f"{inch:.2f}in/{cm:.1f}cm",(mid[0]+10,mid[1]-10),
cv2.FONT_HERSHEY_SIMPLEX,0.7,(255,0,0),2)
cv2.putText(projection_out,f"{inch:.2f}in/{cm:.1f}cm",(mid[0]+10,mid[1]-10),
cv2.FONT_HERSHEY_SIMPLEX,0.7,(255,0,255),2)
if hud_pos:
dx, dy = hud_rot
arrow_angle = math.atan2(dy, dx) # result in radians
quad = draw_hud_box(projection_out, hud_pos, arrow_angle, size=(400,400))
draw_pdf_page(projection_out, page_index=0, dst_quad=quad)
# overlay proj onto debug
debug = full_view.copy()
# overlay ref circle
if cal_circle:
cx,cy,cr = cal_circle
cv2.circle(debug,(cx,cy),cr,(0,0,255),2)
# overlay measurement
if measuring and start_pt and fingertip_idx_global:
cv2.line(debug, start_pt, fingertip_idx_global, (255,0,0),2)
cv2.line(debug, start_pt, fingertip_idx_global, (255,255,0),2)
cv2.putText(debug,f"{inch:.2f}in/{cm:.1f}cm",(mid[0]+10,mid[1]-10),
cv2.FONT_HERSHEY_SIMPLEX,0.7,(255,0,0),2)
cv2.FONT_HERSHEY_SIMPLEX,0.7,(255,0,0),2)
# show windows
cv2.imshow('Hand Measure', debug)
cv2.imshow('Projector Output', proj)
cv2.imshow('Debug Output', debug)
cv2.imshow('Projector Output', projection_out)
key = cv2.waitKey(1) & 0xFF
if key == ord('q'):
break
elif key == ord('c'):
global calibrating
calibrating = True
cal_start = None
print("Entered pinch calibration mode.")
elif key == ord('o'):
global object_calibrating
object_calibrating = True
print("Entered circle calibration mode.")
elif key == ord('j'):
register_hud = True
hud_pos = None
for capture in all_captures:
capture.release()
for cap in caps:
cap.release()
cv2.destroyAllWindows()
if __name__ == '__main__':
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import cv2
import mediapipe as mp
import numpy as np
# ----- Helper Functions -----
def compute_distance(p1, p2):
return np.hypot(p2[0] - p1[0], p2[1] - p1[1])
# ----- Configuration -----
CAMERA_INDICES = [0] # List of camera device indices
FRAME_WIDTH = 1280
FRAME_HEIGHT = 720
PIXELS_PER_INCH = 38 # will be set by calibration
PINCH_THRESHOLD = 40 # px to start touch
RELEASE_THRESHOLD = 60 # px to end touch
CIRCLE_TOUCH_THRESHOLD = 20 # px tolerance for circle touch
# HSV range for shape color (tune for your arrow: now tailored for orange)
LOWER_SHAPE = np.array([10, 100, 100]) # hue from 10° (orange) to
UPPER_SHAPE = np.array([30, 255, 255]) # hue up to 30°, full sat/val range
# dynamic list of registered arrows
# each entry will be {'lower': np.array, 'upper': np.array, 'tip': (x,y) or None}
shape_ranges = []
# ----- Initialize Hand Detector -----
mp_hands = mp.solutions.hands
mp_draw = mp.solutions.drawing_utils
hands = mp_hands.Hands(
static_image_mode=False,
max_num_hands=1,
min_detection_confidence=0.7,
min_tracking_confidence=0.5
)
# ----- Global State -----
measuring = False # measurement in progress
start_pt = None # measurement start point
calibrating = False # pinch-based calibration flag
cal_start = None # pinch calibration start point
object_calibrating = False # object calibration flag
cal_circle = None # reference circle (x,y,r)
fingertip_idx_global = None # last detected fingertip position
arrow_tip = None # detected arrow tip position
# ----- Per-camera Processing -----
def process_frame(frame):
global measuring, start_pt, calibrating, cal_start
global object_calibrating, cal_circle, PIXELS_PER_INCH
global fingertip_idx_global, arrow_tip
frame_out = cv2.flip(frame, 1)
h, w, _ = frame_out.shape
# Hand detection
rgb = cv2.cvtColor(frame_out, cv2.COLOR_BGR2RGB)
rgb.flags.writeable = False
results = hands.process(rgb)
rgb.flags.writeable = True
frame_vis = cv2.cvtColor(rgb, cv2.COLOR_RGB2BGR)
fingertip_idx = None
fingertip_mid = None
if results.multi_hand_landmarks:
hand = results.multi_hand_landmarks[0]
mp_draw.draw_landmarks(frame_vis, hand, mp_hands.HAND_CONNECTIONS)
# get index and middle finger tips and PIP joints
idx_tip = hand.landmark[mp_hands.HandLandmark.INDEX_FINGER_TIP]
idx_pip = hand.landmark[mp_hands.HandLandmark.INDEX_FINGER_PIP]
mid_tip = hand.landmark[mp_hands.HandLandmark.MIDDLE_FINGER_TIP]
mid_pip = hand.landmark[mp_hands.HandLandmark.MIDDLE_FINGER_PIP]
ix, iy = int(idx_tip.x * w), int(idx_tip.y * h)
mx, my = int(mid_tip.x * w), int(mid_tip.y * h)
fingertip_idx = (ix, iy)
fingertip_mid = (mx, my)
fingertip_idx_global = fingertip_idx
# draw fingertips
cv2.circle(frame_vis, fingertip_idx, 8, (0,255,0), -1)
cv2.circle(frame_vis, fingertip_mid, 8, (0,255,0), -1)
# check extension
index_ext = idx_tip.y < idx_pip.y
middle_ext = mid_tip.y < mid_pip.y
# if measurement in progress but fingers no longer both extended, stop measuring
if measuring and not (index_ext and middle_ext):
measuring = False
# pinch distance
pinch = compute_distance(fingertip_idx, fingertip_mid)
cv2.putText(frame_vis, f"Pinch: {int(pinch)} px", (10,30), cv2.FONT_HERSHEY_SIMPLEX, 0.6, (0,255,0),2)
# pinch calibration
if calibrating:
if pinch < PINCH_THRESHOLD and cal_start is None:
cal_start = fingertip_idx
print("Pinch calibration start set")
elif pinch > RELEASE_THRESHOLD and cal_start is not None:
cal_end = fingertip_idx
px = compute_distance(cal_start, cal_end)
inches = float(input("Enter actual distance between points (inches): "))
PIXELS_PER_INCH = px / inches
print(f"Calibrated: {PIXELS_PER_INCH:.2f} px/inch")
calibrating = False
cal_start = None
# measurement gesture
elif not object_calibrating and index_ext and middle_ext:
if pinch < PINCH_THRESHOLD and not measuring:
measuring = True
start_pt = fingertip_idx
elif pinch > RELEASE_THRESHOLD and measuring:
measuring = False
# object calibration
if object_calibrating and fingertip_idx is not None:
hsv = cv2.cvtColor(frame_vis, cv2.COLOR_BGR2HSV)
mask = cv2.inRange(hsv, np.array([10,100,100]), np.array([25,255,255]))
masked = cv2.bitwise_and(frame_vis, frame_vis, mask=mask)
gray = cv2.cvtColor(masked, cv2.COLOR_BGR2GRAY)
gray = cv2.medianBlur(gray,5)
circles = cv2.HoughCircles(gray, cv2.HOUGH_GRADIENT, 1.2, 100,
param1=50, param2=30, minRadius=10, maxRadius=300)
if circles is not None:
circles = np.round(circles[0]).astype(int)
touched = [(x,y,r) for x,y,r in circles
if abs(compute_distance((x,y), fingertip_idx)-r) < CIRCLE_TOUCH_THRESHOLD]
if touched:
touched.sort(key=lambda c: abs(compute_distance((c[0],c[1]), fingertip_idx)-c[2]))
x,y,r = touched[0]
cal_circle = (x,y,r)
PIXELS_PER_INCH = 2 * r
print(f"Circle calib: {PIXELS_PER_INCH:.2f} px/inch")
object_calibrating = False
# permanent reference circle
if cal_circle:
cx,cy,cr = cal_circle
cv2.circle(frame_vis,(cx,cy),cr,(0,0,255),2)
cv2.drawMarker(frame_vis,(cx,cy),(0,0,255),cv2.MARKER_TILTED_CROSS,15,1)
cv2.putText(frame_vis,f"Ref r={cr} px",(cx-cr,cy+cr+20),cv2.FONT_HERSHEY_SIMPLEX,0.5,(0,0,255),1)
# ----- Arrow Shape Detection & HUD Placement -----
# 1) Build a clean orange mask
hsv = cv2.cvtColor(frame_vis, cv2.COLOR_BGR2HSV)
mask = cv2.inRange(hsv, LOWER_SHAPE, UPPER_SHAPE)
kern = cv2.getStructuringElement(cv2.MORPH_RECT, (5,5))
mask = cv2.morphologyEx(mask, cv2.MORPH_OPEN, kern)
mask = cv2.morphologyEx(mask, cv2.MORPH_CLOSE, kern)
# 2) Find and filter contours
contours, _ = cv2.findContours(mask, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
for cnt in contours:
area = cv2.contourArea(cnt)
if area < 1000:
continue
# Approximate to polygon and require exactly 5 corners
peri = cv2.arcLength(cnt, True)
approx = cv2.approxPolyDP(cnt, 0.02 * peri, True)
if len(approx) != 5:
continue
pts = approx.reshape(-1,2)
centroid = np.mean(pts, axis=0)
# Find the arrow tip as the corner farthest from centroid
dists = [np.linalg.norm(pt - centroid) for pt in pts]
tip_pt = pts[int(np.argmax(dists))]
raw_tip = (int(tip_pt[0]), int(tip_pt[1]))
# 3) Smooth the tip over time
alpha = 0.2
if arrow_tip is None:
arrow_tip = raw_tip
else:
arrow_tip = (
int(alpha * raw_tip[0] + (1-alpha) * arrow_tip[0]),
int(alpha * raw_tip[1] + (1-alpha) * arrow_tip[1])
)
# Draw the arrow & tip
cv2.drawContours(frame_vis, [pts], -1, (0,255,255), 2)
cv2.circle(frame_vis, arrow_tip, 8, (0,255,255), -1)
cv2.putText(frame_vis, "Arrow Tip", arrow_tip,
cv2.FONT_HERSHEY_SIMPLEX, 0.5, (0,255,255), 2)
# Place the HUD box in the arrows pointing direction
dir_vec = tip_pt - centroid
norm = np.linalg.norm(dir_vec)
if norm>0:
dir_unit = dir_vec / norm
offset = 50
hud_center = (int(arrow_tip[0] + dir_unit[0]*offset),
int(arrow_tip[1] + dir_unit[1]*offset))
# Build and rotate a 120×60 HUD rectangle
w2, h2 = 60, 30
theta = np.arctan2(dir_unit[1], dir_unit[0])
R = np.array([[ np.cos(theta), -np.sin(theta)],
[ np.sin(theta), np.cos(theta)]])
corners = np.array([[-w2,-h2], [w2,-h2], [w2,h2], [-w2,h2]])
hud_pts = (corners @ R.T) + np.array(hud_center)
hud_pts = hud_pts.astype(int)
cv2.drawContours(frame_vis, [hud_pts], -1, (255,0,255), 2)
cv2.putText(frame_vis, "HUD", hud_center,
cv2.FONT_HERSHEY_SIMPLEX, 0.6, (255,0,255), 2)
return frame_vis
# ----- Main -----
def main():
caps = []
for idx in CAMERA_INDICES:
cap = cv2.VideoCapture(idx)
cap.set(cv2.CAP_PROP_FRAME_WIDTH, FRAME_WIDTH)
cap.set(cv2.CAP_PROP_FRAME_HEIGHT, FRAME_HEIGHT)
caps.append(cap)
if not all(cap.isOpened() for cap in caps):
print("Error: could not open all cameras")
return
print("Press 'c' for pinch calib, 'o' for circle calib, 'q' to quit.")
while True:
frames = [cap.read()[1] for cap in caps]
frame = next((f for f in frames if f is not None), None)
if frame is None:
break
# process
full_view = process_frame(frame)
# create proj output
proj = np.zeros_like(full_view)
if cal_circle:
cx,cy,cr = cal_circle
cv2.circle(proj,(cx,cy),cr,(0,0,255),2)
if measuring and start_pt and fingertip_idx_global:
cv2.line(proj, start_pt, fingertip_idx_global, (255,0,0),2)
px = compute_distance(start_pt, fingertip_idx_global)
inch = px/PIXELS_PER_INCH; cm = inch*2.54
mid = ((start_pt[0]+fingertip_idx_global[0])//2,(start_pt[1]+fingertip_idx_global[1])//2)
cv2.putText(proj,f"{inch:.2f}in/{cm:.1f}cm",(mid[0]+10,mid[1]-10),
cv2.FONT_HERSHEY_SIMPLEX,0.7,(255,0,0),2)
# overlay proj onto debug
debug = full_view.copy()
# overlay ref circle
if cal_circle:
cx,cy,cr = cal_circle
cv2.circle(debug,(cx,cy),cr,(0,0,255),2)
# overlay measurement
if measuring and start_pt and fingertip_idx_global:
cv2.line(debug, start_pt, fingertip_idx_global, (255,0,0),2)
cv2.putText(debug,f"{inch:.2f}in/{cm:.1f}cm",(mid[0]+10,mid[1]-10),
cv2.FONT_HERSHEY_SIMPLEX,0.7,(255,0,0),2)
# show windows
cv2.imshow('Hand Measure', debug)
cv2.imshow('Projector Output', proj)
key = cv2.waitKey(1) & 0xFF
if key == ord('q'):
break
elif key == ord('c'):
global calibrating
calibrating = True
cal_start = None
print("Entered pinch calibration mode.")
elif key == ord('o'):
global object_calibrating
object_calibrating = True
print("Entered circle calibration mode.")
for cap in caps:
cap.release()
cv2.destroyAllWindows()
if __name__ == '__main__':
main()
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import cv2, numpy as np
from helper import compute_distance
cal_circle = None # reference circle (x,y,r)
def object_calibration(frame_vis, fingertip_idx, CIRCLE_TOUCH_THRESHOLD):
global cal_circle
hsv = cv2.cvtColor(frame_vis, cv2.COLOR_BGR2HSV)
mask = cv2.inRange(hsv, np.array([10,100,100]), np.array([25,255,255]))
masked = cv2.bitwise_and(frame_vis, frame_vis, mask=mask)
gray = cv2.cvtColor(masked, cv2.COLOR_BGR2GRAY)
gray = cv2.medianBlur(gray,5)
circles = cv2.HoughCircles(gray, cv2.HOUGH_GRADIENT, 1.2, 100,
param1=50, param2=30, minRadius=10, maxRadius=300)
if circles is not None:
circles = np.round(circles[0]).astype(int)
touched = [(x,y,r) for x,y,r in circles
if abs(compute_distance((x,y), fingertip_idx)-r) < CIRCLE_TOUCH_THRESHOLD]
if touched:
touched.sort(key=lambda c: abs(compute_distance((c[0],c[1]), fingertip_idx)-c[2]))
x,y,r = touched[0]
cal_circle = (x,y,r)
PIXELS_PER_INCH = 2 * r
print(f"Circle calib: {PIXELS_PER_INCH:.2f} px/inch")
def draw_cal_circle(frame_vis):
global cal_circle
cx,cy,cr = cal_circle
cv2.circle(frame_vis,(cx,cy),cr,(0,0,255),2)
cv2.drawMarker(frame_vis,(cx,cy),(0,0,255),cv2.MARKER_TILTED_CROSS,15,1)
cv2.putText(frame_vis,f"Ref r={cr} px",(cx-cr,cy+cr+20),cv2.FONT_HERSHEY_SIMPLEX,0.5,(0,0,255),1)
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import numpy as np
# ----- Configuration -----
CAMERA_INDICES = [0] # List of camera device indices
FRAME_WIDTH = 3980
FRAME_HEIGHT = 2560
PIXELS_PER_INCH = 38 # will be set by calibration
PINCH_THRESHOLD = 40 # px to start touch
RELEASE_THRESHOLD = 60 # px to end touch
CIRCLE_TOUCH_THRESHOLD = 20 # px tolerance for circle touch
# HSV range for shape color (tune for your arrow: now tailored for orange)
LOWER_SHAPE = np.array([10, 100, 100]) # hue from 10° (orange) to
UPPER_SHAPE = np.array([30, 255, 255]) # hue up to 30°, full sat/val range
DEBOUNCE_TIME = 1.0 # seconds
# ——— Constants for Tabs & Buttons ———
TAB_W, TAB_H = 40, 60
TAB_X = 600 # adjust this to your projector output width
TAB_Y0 = 50
TAB_GAP = 10
# left/right arrow buttons
LEFT_BTN_TOP = (TAB_X, TAB_Y0+2*(TAB_H+TAB_GAP)+20)
RIGHT_BTN_TOP = (TAB_X, LEFT_BTN_TOP[1]+TAB_H+TAB_GAP)
DEBUG = True
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import mediapipe as mp
import cv2, numpy as np, time, fitz
from helper import compute_distance
from config import PINCH_THRESHOLD, RELEASE_THRESHOLD
# ----- Initialize Hand Detector -----
mp_hands = mp.solutions.hands
mp_draw = mp.solutions.drawing_utils
hands = mp_hands.Hands(
static_image_mode=False,
max_num_hands=2,
min_detection_confidence=0.7,
min_tracking_confidence=0.5
)
start_pt = None # measurement start point
measuring = False # measurement in progress
def detect_hands(frame):
rgb = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
rgb.flags.writeable = False
results = hands.process(rgb)
return results
def check_hand(hand, frame_vis, object_calibrating):
h, w, _ = frame_vis.shape
fingertip_idx = None
fingertip_mid = None
mp_draw.draw_landmarks(frame_vis, hand, mp_hands.HAND_CONNECTIONS)
# get index and middle finger tips and PIP joints
idx_tip = hand.landmark[mp_hands.HandLandmark.INDEX_FINGER_TIP]
mid_tip = hand.landmark[mp_hands.HandLandmark.MIDDLE_FINGER_TIP]
ix, iy = int(idx_tip.x * w), int(idx_tip.y * h)
mx, my = int(mid_tip.x * w), int(mid_tip.y * h)
fingertip_idx = (ix, iy)
fingertip_mid = (mx, my)
# draw fingertips
cv2.circle(frame_vis, fingertip_idx, 8, (255,255,0), -1)
cv2.circle(frame_vis, fingertip_mid, 8, (0,255,0), -1)
measuring, start_pt = is_measuring(frame_vis, hand, object_calibrating)
return fingertip_idx, measuring, start_pt
def is_measuring(frame_vis, hand, object_calibrating):
global measuring, start_pt
h, w, _ = frame_vis.shape
idx_tip = hand.landmark[mp_hands.HandLandmark.INDEX_FINGER_TIP]
idx_pip = hand.landmark[mp_hands.HandLandmark.INDEX_FINGER_PIP]
mid_tip = hand.landmark[mp_hands.HandLandmark.MIDDLE_FINGER_TIP]
mid_pip = hand.landmark[mp_hands.HandLandmark.MIDDLE_FINGER_PIP]
ix, iy = int(idx_tip.x * w), int(idx_tip.y * h)
mx, my = int(mid_tip.x * w), int(mid_tip.y * h)
fingertip_idx = (ix, iy)
fingertip_mid = (mx, my)
# check extension
index_ext = idx_tip.y < idx_pip.y
middle_ext = mid_tip.y < mid_pip.y
# if measurement in progress but fingers no longer both extended, stop measuring
if measuring and not (index_ext and middle_ext):
measuring = False
# pinch distance
pinch = compute_distance(fingertip_idx, fingertip_mid)
cv2.putText(frame_vis, f"Pinch: {int(pinch)} px", (10,30), cv2.FONT_HERSHEY_SIMPLEX, 0.6, (0,255,0),2)
# measurement gesture
if not object_calibrating and index_ext and middle_ext:
if pinch < PINCH_THRESHOLD and not measuring:
measuring = True
start_pt = fingertip_idx
elif pinch > RELEASE_THRESHOLD and measuring:
measuring = False
return measuring, start_pt
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import numpy as np
# ----- Helper Functions -----
def compute_distance(p1, p2):
return np.hypot(p2[0] - p1[0], p2[1] - p1[1])
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import cv2, numpy as np
from config import LOWER_SHAPE, UPPER_SHAPE
import cv2
import numpy as np
import time
import fitz # PyMuPDF for PDF rendering
def find_hud_placement(frame_vis):
# ----- Arrow Shape Detection & HUD Placement -----
# 1) Build a clean orange mask
hsv = cv2.cvtColor(frame_vis, cv2.COLOR_BGR2HSV)
mask = cv2.inRange(hsv, LOWER_SHAPE, UPPER_SHAPE)
kern = cv2.getStructuringElement(cv2.MORPH_RECT, (5,5))
mask = cv2.morphologyEx(mask, cv2.MORPH_OPEN, kern)
mask = cv2.morphologyEx(mask, cv2.MORPH_CLOSE, kern)
# 2) Find and filter contours
contours, _ = cv2.findContours(mask, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
for cnt in contours:
area = cv2.contourArea(cnt)
if area < 1000:
continue
# Approximate to polygon and require exactly 5 corners
peri = cv2.arcLength(cnt, True)
approx = cv2.approxPolyDP(cnt, 0.02 * peri, True)
if len(approx) != 5:
continue
pts = approx.reshape(-1,2)
centroid = np.mean(pts, axis=0)
# Find the arrow tip as the corner farthest from centroid
dists = [np.linalg.norm(pt - centroid) for pt in pts]
tip_pt = pts[int(np.argmax(dists))]
arrow_tip = (int(tip_pt[0]), int(tip_pt[1]))
# Place the HUD box in the arrows pointing direction
dir_vec = tip_pt - centroid
#ToDo remove
cv2.drawContours(frame_vis, [pts], -1, (0,255,255), 2)
return arrow_tip, dir_vec
# ——————————————————————————————————————————————
# PDF loading / rasterization at import time
# ——————————————————————————————————————————————
PDF_PATH = "DarkAngles.pdf" # change this to your file
PDF_DPI = 600 # controls resolution of rasterization
_doc = fitz.open(PDF_PATH)
_pdf_pages = []
for page in _doc:
# render page to pixmap at desired zoom
zoom = PDF_DPI / 72.0
mat = fitz.Matrix(zoom, zoom)
pix = page.get_pixmap(matrix=mat, alpha=False)
# convert pixmap to ndarray
img = np.frombuffer(pix.samples, dtype=np.uint8)
img = img.reshape(pix.height, pix.width, pix.n)
if pix.n == 4:
img = cv2.cvtColor(img, cv2.COLOR_RGBA2BGR)
_pdf_pages.append(img)
_doc.close()
# ——————————————————————————————————————————————
# HUD drawing routines
# ——————————————————————————————————————————————
# rotated rectangle → 4 pts
def _rect_to_pts(center, size, angle_rad):
cx, cy = center
w, h = size
# local corners
pts = np.array([
[-w/2, -h/2],
[ w/2, -h/2],
[ w/2, h/2],
[-w/2, h/2],
])
# rotation
c, s = np.cos(angle_rad), np.sin(angle_rad)
R = np.array([[c, -s],[s, c]])
pts = pts.dot(R.T)
pts += np.array([cx, cy])
return pts.astype(np.float32)
def draw_hud_box(frame, tip, angle_rad, size=(120, 60), color=(255,0,255), thickness=2):
"""Draw a rotated HUD rectangle at `tip` pointing along `angle_rad`."""
# compute box corners
pts = _rect_to_pts(center=tip, size=size, angle_rad=angle_rad)
cv2.drawContours(frame, [pts.astype(int)], -1, color, thickness)
# label
cv2.putText(frame, "HUD", (int(tip[0]+5), int(tip[1]+5)), cv2.FONT_HERSHEY_SIMPLEX, 0.6, color, 2)
return pts # return the quad for PDF warping
def draw_pdf_page(frame, page_index, dst_quad):
"""
Warp PDF page image #page_index into the quadrilateral dst_quad.
dst_quad: 4×2 float32 array of destination corners in clock-wise order.
"""
if page_index < 0 or page_index >= len(_pdf_pages):
return
src = _pdf_pages[page_index]
h, w = src.shape[:2]
# source corners (tl, tr, br, bl)
src_quad = np.array([[0,0], [w,0], [w,h], [0,h]], dtype=np.float32)
# compute homography
M = cv2.getPerspectiveTransform(src_quad, dst_quad)
# warp PDF page into place (transparent where outside)
warp = cv2.warpPerspective(src, M, (frame.shape[1], frame.shape[0]))
mask = cv2.warpPerspective(np.ones((h,w), dtype=np.uint8)*255, M, (frame.shape[1], frame.shape[0]))
# composite onto frame
inv = cv2.bitwise_not(mask)
bg = cv2.bitwise_and(frame, frame, mask=inv)
fg = cv2.bitwise_and(warp, warp, mask=mask)
np.copyto(frame, bg+fg)
# hud.py
class HUD:
def __init__(self, marker_id, pdf_pages, default_page=0):
self.id = marker_id
self.page_index = default_page
self.pdf_pages = pdf_pages # list of preloaded page images
self.ref_quad = None # the 4-corner quad where to draw the PDF
self.last_seen = 0 # for timeout if arrow goes away
def update(self, marker):
return
def draw(self, frame):
return
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import cv2, numpy as np
from calibration import object_calibration
from hand_detection import detect_hands, check_hand
from helper import compute_distance
from hud import find_hud_placement
import math
from config import CAMERA_INDICES, FRAME_WIDTH, FRAME_HEIGHT, PIXELS_PER_INCH, CIRCLE_TOUCH_THRESHOLD
from config import DEBUG
from hud import draw_hud_box, draw_pdf_page
# ----- Global State -----
measuring = False # measurement in progress
start_pt = None # measurement start point
calibrating = False # pinch-based calibration flag
object_calibrating = False # object calibration flag
fingertip_idx_global = None # last detected fingertip position
hud_pos = None
hud_rot = None
register_hud = False
# ----- Per-camera Processing -----
def process_frame(frame):
global measuring, start_pt, calibrating
global object_calibrating
global fingertip_idx_global
global register_hud, hud_pos, hud_rot
frame_vis = cv2.flip(frame, 1)
# Hand detection
results = detect_hands(frame_vis)
fingertip_idx = None
if results.multi_hand_landmarks:
hand = results.multi_hand_landmarks[0]
fingertip_idx, measuring, start_pt = check_hand(hand, frame_vis, object_calibrating)
fingertip_idx_global = fingertip_idx
# object calibration
if object_calibrating and fingertip_idx is not None:
object_calibration(frame_vis, fingertip_idx, CIRCLE_TOUCH_THRESHOLD)
object_calibrating = False
# place hud
res = None
if hud_pos is None:
res = find_hud_placement(frame_vis)
else:
res = hud_pos, hud_rot
# create proj output
projection_out = np.zeros_like(frame)
# measuring
if measuring and start_pt and fingertip_idx_global:
cv2.line(projection_out, start_pt, fingertip_idx_global, (255,0,0),2)
px = compute_distance(start_pt, fingertip_idx_global)
inch = px/PIXELS_PER_INCH; cm = inch*2.54
mid = ((start_pt[0]+fingertip_idx_global[0])//2,(start_pt[1]+fingertip_idx_global[1])//2)
cv2.putText(projection_out,f"{inch:.2f}in/{cm:.1f}cm",(mid[0]+10,mid[1]-10), cv2.FONT_HERSHEY_SIMPLEX,0.7,(255,0,255),2)
# hud
if res is not None or hud_pos:
if hud_pos:
arrow_tip = hud_pos
dir_vec = hud_rot
else:
arrow_tip, dir_vec = res
dx, dy = dir_vec
arrow_angle = math.atan2(dy, dx) # result in radians
quad = draw_hud_box(projection_out, arrow_tip, arrow_angle, size=(400,400))
draw_pdf_page(projection_out, page_index=0, dst_quad=quad)
if register_hud:
hud_pos = arrow_tip
hud_rot = dir_vec
register_hud = False
mask = cv2.cvtColor(projection_out, cv2.COLOR_BGR2GRAY) > 0
frame_vis[mask] = projection_out[mask]
return frame_vis, projection_out
# ----- Main ----- -------------------------------------------------------------------------------------
def main():
all_captures = []
for idx in CAMERA_INDICES:
capture = cv2.VideoCapture(idx)
capture.set(cv2.CAP_PROP_FRAME_WIDTH, FRAME_WIDTH)
capture.set(cv2.CAP_PROP_FRAME_HEIGHT, FRAME_HEIGHT)
all_captures.append(capture)
if not all(capture.isOpened() for capture in all_captures):
print("Error: could not open all cameras")
return
print("Press 'o' for circle calib, 'q' to quit.")
while True:
frames = [capture.read()[1] for capture in all_captures]
frame = next((f for f in frames if f is not None), None)
if frame is None:
break
# process
projection, debug = process_frame(frame)
# show windows
if DEBUG:
cv2.imshow('Debug Output', debug)
cv2.imshow('Projector Output', projection)
key = cv2.waitKey(1) & 0xFF
if key == ord('q'):
break
elif key == ord('o'):
global object_calibrating
object_calibrating = True
print("Entered circle calibration mode.")
elif key == ord('j'):
global register_hud, hud_pos
register_hud = True
hud_pos = None
for capture in all_captures:
capture.release()
cv2.destroyAllWindows()
if __name__ == '__main__':
main()