使用 python 脚本和 C#脚本的组合来创建一个具有手部跟踪和手势识别功能的 Unity 应用程序。使用 python 脚本来检测手部运动和相对手势。
项目需要Vuforia如果你想自己安装，下载 Asset 文件夹（在 Unity Project 文件夹内）。
1.使用3x3高斯滤波器去噪图像。
2.转换图像到HSV颜色空间。
3.应用阈值操作以获得二进制图像（肤色像素变为白色，其他为黑色）。
4.应用膨胀和腐蚀填充可能的孔洞。
5.再次应用高斯滤波器以平滑边缘。
6.使用OpenCV的findContours()函数从二进制图像获取轮廓。
7.使用Suzuky和Abe开发的算法并通过OpenCV的convexHull()实现Sklansky算法找到凸包。
1.将点放置在之前找到的轮廓的最高点上（y值最小）。
2.实现稳定器例程以避免点围绕指尖摆动。
1.基于右手每帧的手指数量进行手势识别。
2.使用余弦定理从凸包和轮廓中找到手的缺陷。
3.为每个缺陷形成三角形，并计算红点（对应于缺陷）处的角度：
[\theta = \arccos\left(\frac{b^2 + c^2 - a^2}{2bc}\right) \times \frac{180}{\pi}]
其中 ( \theta ) 是度数形式的角度，a、b、c是图中三角形的边。
1.使用Fast-RCNN进行手部追踪，训练了40个epoch。使用了迁移学习（仅训练最后一层）。
1.开发了一个接受手部图像作为输入并输出手指数量的简单CNN。
2.网络结构包括4个卷积层、每层后跟一个最大池化层和最后的两个全连接层，激活函数选择ReLU。
3.在200个图像上训练了250个epoch，使用Cross Entropy作为损失函数和AdaDelta作为优化器。
import numpy as np
import cv2
import math
import socket
import time
from hand_detector_utils import *
UDP_IP = "127.0.0.1"
UDP_PORT = 5065
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
last = []
good_condition = False
drawing_box = True
full_frame = False
stabilize_highest_point = True
old_highest_point = (-1, -1)
x1_crop = 0
y1_crop = 60
x2_crop = 320
y2_crop = 420
# Open Camera
try:
default = 1 # Try Changing it to 1 if webcam not found
capture = cv2.VideoCapture(default)
except:
print("No Camera Source Found!")
while capture.isOpened():
# Capture frames from the camera
ret, frame = capture.read()
width = frame.shape[1]
img_left = frame[y1_crop:y2_crop, 0:int(width/3)]
img_right = frame[y1_crop:y2_crop, int(width/3 * 2): int(width)]
try:
contour_left = detectHand(img_left)
contour_right = detectHand(img_right)
defects_left, drawing_left = findDefects(img_left, contour_left)
defects_right, drawing_right = findDefects(img_right, contour_right)
# Count defects (in the right image)
count_defects = countDefects(defects_right, contour_right, img_right)
# Track highest point (in the left image)
highest_point = trackHighestPoint(defects_left, contour_left)
if(stabilize_highest_point):
if( old_highest_point == (-1, -1)): old_highest_point = highest_point
else:
# Evaluate the magnitude of the difference
diag_difference = np.linalg.norm(np.asarray(old_highest_point) - np.asarray(highest_point))
# If the difference is bigger than a threshold then I actually moved my finger
if(diag_difference >= 9.5):
# print("diag_difference = ", diag_difference)
old_highest_point = highest_point
else: highest_point = old_highest_point;
if(full_frame):
highest_point = (highest_point[0], highest_point[1])
cv2.circle(frame, highest_point, 10, [255,0,255], -1)
else:
cv2.circle(img_left, highest_point, 10, [255,0,255], -1)
highest_point = (highest_point[0] + x1_crop, highest_point[1] + y1_crop)
cv2.circle(frame, highest_point, 10, [255,0,255], -1)
# Print number of fingers
textDefects(frame, count_defects,debug_var = False)
# Show required images
if(drawing_box):
cv2.rectangle(frame, (x1_crop, y1_crop), (int(width/3), y2_crop),(0,0,255), 1)
cv2.rectangle(frame, (int(width/3 * 2), y1_crop), (int(width), y2_crop),(0,0,255), 1)
cv2.imshow("Full Frame", frame)
all_image_left = np.hstack((drawing_left, img_left))
cv2.imshow('Recognition Left', all_image_left)
all_image_right = np.hstack((drawing_right, img_right))
cv2.imshow('Recognition Right', all_image_right)
last.append(count_defects)
if(len(last) > 5):
last = last[-5:]
# last = []
# Check if previously hand was wide open (3/4 fingers in previous frames), and is now a fist (0 fingers)
if(good_condition):
if(count_defects == 0 and 4 in last):
last = []
sendCommand(sock, UDP_IP, UDP_PORT, "ACTION")
elif(count_defects == 0 and 2 in last):
last = []
sendCommand(sock, UDP_IP, UDP_PORT, "BACK")
else:
if(count_defects == 0 and 4 in last):
last = []
sendCommand(sock, UDP_IP, UDP_PORT, "ACTION")
command = "l " + str(highest_point[0]) + " " + str(highest_point[1])
sendCommand(sock, UDP_IP, UDP_PORT, command, debug_var = False)
except:
pass
# Close the camera if 'q' is pressed
if cv2.waitKey(1) == ord('q'):
break
capture.release()
cv2.destroyAllWindows()https://github.com/dorisoy/Dorisoy.HandTracking/blob/main/Video/826bc7f6c296dfae62b87318218fe8eb.mp4