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blobber_with_encode.py
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blobber_with_encode.py
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import math
import cv2 as cv
import numpy as np
import ball_net as bn
import sys
cnt = 0
R = 60
EPS = 1e-6
EPS2 = 0.5
STATUS_INIT = 0
STATUS_STATIC = 1
STATUS_DIRECTED = 2
# +
def majority_decreasing_x_check(path):
decreasing_count = 0
total_count = len(path) - 1
for i in range(total_count):
if path[i][0] > path[i + 1][0]:
decreasing_count += 1
return decreasing_count / total_count > 0.7
def majority_increasing_x_check(path):
increasing_count = 0
total_count = len(path) - 1
for i in range(total_count):
if path[i][0] < path[i + 1][0]:
increasing_count += 1
# Check if the majority of x-coordinates are decreasing
return increasing_count / total_count > 0.7
# -
def filter_fn(path):
return majority_increasing_x_check(path) or majority_decreasing_x_check(path)
def pt_dist(x1, y1, x2, y2):
dx = x1 - x2
dy = y1 - y2
return math.sqrt(dx * dx + dy * dy)
class Blob:
cnt = 1
def __init__(self, x, y, r, a):
self.id = Blob.cnt
Blob.cnt += 1
self.pts = [[x, y]]
self.pp = [[r, a]]
self.status = STATUS_INIT
self.v = None
self.age = a
self.nx = None
self.ny = None
def fit(self, x, y, r):
d = pt_dist(self.pts[-1][0], self.pts[-1][1], x, y)
return d < R, d
def add(self, x, y, r, a):
self.pts.append([x, y])
self.pp.append([r, a])
self.age = a
if len(self.pts) > 2:
#if self.status == STATUS_DIRECTED and self.nx is not None:
# print("Predict", self.nx, self.ny, "vs", x, y)
dx1 = self.pts[-2][0] - self.pts[-3][0]
dy1 = self.pts[-2][1] - self.pts[-3][1]
dx2 = x - self.pts[-2][0]
dy2 = y - self.pts[-2][1]
d1 = pt_dist(self.pts[-2][0], self.pts[-2][1], x, y)
d2 = pt_dist(self.pts[-2][0], self.pts[-2][1], self.pts[-3][0], self.pts[-3][1])
if dx1 * dx2 > 0 and dy1 * dy2 > 0 and d1 > 5 and d2 > 5:
self.status = STATUS_DIRECTED
#print("Directed", self.pts)
#self.predict()
elif self.status != STATUS_DIRECTED:
self.status = STATUS_STATIC
def predict(self):
npts = np.array(self.pts)
l = len(self.pts) + 1
idx = np.array(range(1, l))
kx = np.polyfit(idx, npts[:,0], 1)
fkx = np.poly1d(kx)
ky = np.polyfit(idx, npts[:,1], 1)
fky = np.poly1d(ky)
self.nx = fkx(l)
self.ny = fky(l)
return self.nx, self.ny
B = []
bb = None
prev_bb = None
def get_ball_blob():
return bb
def find_fblob(x, y, r):
global B, cnt
rbp = []
sbp = []
for b in B:
ft, d = b.fit(x, y, r)
if ft:
if cnt - b.age < 4:
rbp.append([b,d])
elif b.status == STATUS_STATIC:
sbp.append([b,d])
if len(sbp) + len(rbp) == 0:
return None
rbp.sort(key = lambda e: e[1])
if len(rbp) > 0:
return rbp[0][0]
sbp.sort(key = lambda e: e[1])
return sbp[0][0]
def handle_blob(x, y, r):
global B, cnt, bb
b = find_fblob(x, y, r)
if b is None:
B.append(Blob(x, y, r, cnt))
return
b.add(x, y, r, cnt)
if b.status == STATUS_DIRECTED:
if bb is None:
bb = b
elif len(b.pts) > len(bb.pts):
bb = b
def begin_gen():
global bb, prev_bb
prev_bb = bb
bb = None
def end_gen():
global cnt, bb
cnt += 1
def handle_blobs(mask, frame):
cnts, _ = cv.findContours(mask, cv.RETR_CCOMP, cv.CHAIN_APPROX_SIMPLE)
k = 0
begin_gen()
for c in cnts:
rx,ry,rw,rh = cv.boundingRect(c)
mn = min(rw, rh)
mx = max(rw, rh)
r = mx / mn
if mn < 10 or mx > 40 or r > 1.5:
continue
cut_m = mask[ry : ry + rh, rx : rx + rw]
blob, nz = check_blob(cut_m, 0, 0, rw, rh)
if not blob:
continue
pnz = nz / (rw * rh)
if pnz < 0.5:
continue
cut_f = frame[ry : ry + rh, rx : rx + rw]
cut_c = cv.bitwise_and(cut_f,cut_f,mask = cut_m)
if bn.check_pic(cut_c) != 0:
continue
((x, y), r) = cv.minEnclosingCircle(c)
handle_blob(int(x), int(y), int(r))
k += 1
end_gen()
def check_blob(pic, x, y, w, h):
dy = int(h / 5)
y0 = y + 2 * dy
cut_h = pic[y0 : y0 + dy, x : x + w]
dx = int(w / 5)
x0 = x + 2 * dx
cut_v = pic[y : y + h, x0 : x0 + dx]
hnz = cv.countNonZero(cut_h)
vnz = cv.countNonZero(cut_v)
nz = cv.countNonZero(pic)
mn = min(hnz, vnz)
r = max(hnz, vnz) / mn if mn > 0 else 1000
return r < 1.5 and hnz / nz > 0.15 and vnz / nz > 0.15, nz
def draw_ball(pic):
bb = get_ball_blob()
if not bb is None:
cv.circle(pic, (bb.pts[-1][0], bb.pts[-1][1]), 10, (0, 200, 0), 3)
else:
if prev_bb is not None:
x, y = prev_bb.predict()
cv.circle(pic, (int(x), int(y)), 10, (0, 200, 0), 3)
def draw_ball_path(pic):
bb = get_ball_blob()
if not bb is None:
for p in bb.pts:
cv.circle(pic, (p[0], p[1]), 3, (150, 150, 150), -1)
def draw_blobs(w, h):
pic = np.zeros((h, w, 3), np.uint8)
ball_path_points = []
for b in B:
clr = (200, 200, 200)
if b.status == STATUS_STATIC:
clr = (0, 200, 0)
if len(b.pts)>2 and (b.status == STATUS_DIRECTED or filter_fn(b.pts)):
clr = (200, 0, 0)
ball_path_points.append(b.pts)
if not b.v is None:
cv.line(pic,(b.pts[0][0], b.pts[0][1]),(b.pts[-1][0], b.pts[-1][1]),(255, 0, 0), 1)
#print(b.pts)
for p in b.pts:
cv.circle(pic, (p[0], p[1]), 3, clr, -1)
ball_path_array = np.array(ball_path_points)
draw_ball(pic)
return pic, ball_path_array
def test_clip(path):
vs = cv.VideoCapture(path)
length = int(vs.get(cv.CAP_PROP_FRAME_COUNT))
backSub = cv.createBackgroundSubtractorMOG2()
n = 0
while(True):
ret, frame = vs.read()
if not ret or frame is None:
break
h = int(frame.shape[0] / 2)
w = int(frame.shape[1] / 2)
frame = cv.resize(frame, (w, h))
mask = backSub.apply(frame)
mask = cv.dilate(mask, None)
mask = cv.GaussianBlur(mask, (15, 15),0)
ret,mask = cv.threshold(mask,0,255,cv.THRESH_BINARY | cv.THRESH_OTSU)
handle_blobs(mask, frame)
pic, ball_path_array = draw_blobs(w, h)
cv.imshow('frame', pic)
cv.imwrite("frames/frame-{:03d}.jpg".format(n), pic)
if cv.waitKey(10) == 27:
break
n += 1
return pic, ball_path_array
#import time
#if __name__ == "__main__":
# test_clip("sample_round_video/22_1_b_o.mp4")
# +
import os
if __name__ == "__main__":
#folder_path = "sample_round_video/"
# save detected ball path as jpg
#save_path_pic = "../"
# save detected ball path as numpy array
#save_path_data = "../"
for filename in os.listdir(folder_path):
if filename.endswith(".mp4"): # Make sure to only process .mov files
print(f"Processing file: {filename}")
# Strip the file extension from the filename
base_filename = os.path.splitext(filename)[0]
# Run the function on the file
B.clear()
pic, ball_path_array = test_clip(os.path.join(folder_path, filename))
# Save the line_points_array as a .npy file with the corresponding name
np.save(os.path.join(save_path_data, f"{base_filename}.npy"), ball_path_array)
# Save the final image as a .jpg file with the corresponding name
cv.imwrite(os.path.join(save_path_pic, f"{base_filename}.jpg"), pic)
# -